|Publication number||US7557586 B1|
|Application number||US 10/441,271|
|Publication date||Jul 7, 2009|
|Filing date||May 19, 2003|
|Priority date||Nov 1, 1999|
|Also published as||US6566883, US7656162, US7940052, US8754653, US20040263176, US20100013489, US20100188091|
|Publication number||10441271, 441271, US 7557586 B1, US 7557586B1, US-B1-7557586, US7557586 B1, US7557586B1|
|Inventors||J. David Vonderhaar, Kevin I. Bertness|
|Original Assignee||Midtronics, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (113), Non-Patent Citations (34), Referenced by (3), Classifications (32), Legal Events (2) |
|External Links: USPTO, USPTO Assignment, Espacenet|
Electronic battery tester
US 7557586 B1
An electronic battery tester for testing a storage battery includes test circuitry configured to provide an output based upon a selected test criteria. Additionally, circuitry is provided to assist in balancing batteries used in a string of multiple batteries.
1. An electronic battery tester for use in testing a battery pack formed by a plurality of storage batteries, comprising:
battery test circuitry configured to measure a dynamic parameter of the battery pack formed by the plurality of batteries using Kelvin connectors coupled to the battery pack and provide a battery test result;
a memory configured to store a plurality of known configurations (series, parallel and series-parallel) of batteries in a battery pack;
a microprocessor configured to automatically identify the configuration (series, parallel and series-parallel) of the plurality of batteries in the battery pack based upon a measured voltage of the battery pack and responsively change a test criteria of the battery test circuitry; and
wherein the battery test result is based upon the identified configuration of the plurality of batteries.
2. The apparatus of claim 1 wherein the microprocessor determines battery pack configuration further as a function of a user input.
3. An electronic battery tester for use in testing a battery pack formed by a plurality of storage batteries, comprising:
battery test circuitry configured to measure a dynamic parameter of the battery pack formed by the plurality of batteries using Kelvin connectors coupled to the battery pack and provide a battery test result;
a memory configured to store a plurality of known configurations (series, parallel and series-parallel) of batteries in a battery pack;
a microprocessor configured to identify the configuration (series, parallel and series-parallel) of the plurality of batteries in the battery pack based upon a user input and responsively change a test criteria of the battery test circuitry; and
wherein the battery test result is based upon the identified configuration of the plurality of batteries.
4. The apparatus of claim 3 wherein the microprocessor determines battery configuration further as a function of a measured voltage of the battery pack.
5. The apparatus of claim 4 wherein the microprocessor is further configured to identify a configuration of the plurality of batteries in the battery pack based upon a voltage of individual batteries in the battery pack.
6. The apparatus of claim 3 wherein the user input is configured to select one of the plurality of standard known configurations stored in the memory.
7. The apparatus of claim 3 wherein the microprocessor determines a CCA rating of the battery pack based upon the battery test result and the identified configuration of the plurality of batteries in the battery pack.
8. The apparatus of claim 3 wherein the microprocessor determines a conductance of the battery pack based upon the battery test result and the identified configuration of the plurality of batteries in the battery pack.
9. The apparatus of claim 1 including a memory configured to store a plurality of standard known configurations of battery packs.
10. The apparatus of claim 1 wherein the microprocessor is further configured to identify a configuration of the plurality of batteries in the battery pack based upon a voltage of individual batteries in the battery pack.
11. The apparatus of claim 2 wherein the user input is configured to select one of a plurality of standard known configurations stored in the memory.
12. The apparatus of claim 1 wherein the microprocessor determines a CCA rating of the battery pack based upon the battery test result and the identified configuration of the plurality of batteries in the battery pack.
13. The apparatus of claim 1 wherein the microprocessor determines a conductance of the battery pack based upon the battery test result and the identified configuration of the plurality of batteries in the battery pack.
This is a Divisional of application Ser. No. 09/703,270, filed Oct. 31, 2000 which claims priority to Provisional Application Ser. No. 60/163,013, filed Nov. 1, 1999 by David Vonderhaar and Michael E. Troy and entitled AUTOMOTIVE BATTERY CHARGING SYSTEM TESTER.
BACKGROUND OF THE INVENTION
The present invention relates to storage batteries. More specifically, the present invention relates to a battery system tester for testing storage batteries.
Many attempts have been made to test storage batteries. One technique which has been pioneered by Dr. Keith S. Champlin and Midtronics, Inc. of Burr Ridge, Ill. relates to measuring the conductance of batteries to determine their condition. This technique is described in a number of United States patents, for example, U.S. Pat. No. 3,873,911, issued Mar. 25, 1975, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE; U.S. Pat. No. 3,909,708, issued Sep. 30, 1975, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE; U.S. Pat. No. 4,816,768, issued Mar. 28, 1989, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE; U.S. Pat. No. 4,825,170, issued Apr. 25, 1989, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE WITH AUTOMATIC VOLTAGE SCALING; U.S. Pat. No. 4,881,038, issued Nov. 14, 1989, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE WITH AUTOMATIC VOLTAGE SCALING TO DETERMINE DYNAMIC CONDUCTANCE; U.S. Pat. No. 4,912,416, issued Mar. 27, 1990, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE WITH STATE-OF-CHARGE COMPENSATION; U.S. Pat. No. 5,140,269, issued Aug. 18, 1992, to Champlin, entitled ELECTRONIC TESTER FOR ASSESSING BATTERY/CELL CAPACITY; U.S. Pat. No. 5,343,380, issued Aug. 30, 1994, entitled METHOD AND APPARATUS FOR SUPPRESSING TIME VARYING SIGNALS IN BATTERIES UNDERGOING CHARGING OR DISCHARGING; U.S. Pat. No. 5,572,136, issued Nov. 5, 1996, entitled ELECTRONIC BATTERY TESTER WITH AUTOMATIC COMPENSATION FOR LOW STATE-OF-CHARGE; U.S. Pat. No. 5,574,355, issued Nov. 12, 1996, entitled METHOD AND APPARATUS FOR DETECTION AND CONTROL OF THERMAL RUNAWAY IN A BATTERY UNDER CHARGE; U.S. Pat. No. 5,585,728, issued Dec. 17, 1996, entitled ELECTRONIC BATTERY TESTER WITH AUTOMATIC COMPENSATION FOR LOW STATE-OF-CHARGE; U.S. Pat. No. 5,592,093, issued Jan. 7, 1997, entitled ELECTRONIC BATTERY TESTING DEVICE LOOSE TERMINAL CONNECTION DETECTION VIA A COMPARISON CIRCUIT; U.S. Pat. No. 5,598,098, issued Jan. 28, 1997, entitled ELECTRONIC BATTERY TESTER WITH VERY HIGH NOISE IMMUNITY; U.S. Pat. No. 5,757,192, issued May 26, 1998, entitled METHOD AND APPARATUS FOR DETECTING A BAD CELL IN A STORAGE BATTERY; U.S. Pat. No. 5,821,756, issued Oct. 13, 1998, entitled ELECTRONIC BATTERY TESTER WITH TAILORED COMPENSATION FOR LOW STATE-OF-CHARGE; U.S. Pat. No. 5,831,435, issued Nov. 3, 1998, entitled BATTERY TESTER FOR JIS STANDARD; U.S. Pat. No. 5,914,605, issued Jun. 22, 1999, entitled ELECTRONIC BATTERY TESTER; U.S. Pat. No. 5,945,829, issued Aug. 31, 1999, entitled MIDPOINT BATTERY MONITORING; U.S. Pat. No. 6,002,238, issued Dec. 14, 1999, entitled METHOD AND APPARATUS FOR MEASURING COMPLEX IMPEDANCE OF CELLS AND BATTERIES; U.S. Pat. No. 6,037,777, issued Mar. 14, 2000, entitled METHOD AND APPARATUS FOR DETERMINING BATTERY PROPERTIES FROM COMPLEX IMPEDANCE/ADMITTANCE; U.S. Pat. No. 6,051,976, issued Apr. 18, 2000, entitled METHOD AND APPARATUS FOR AUDITING A BATTERY TEST; U.S. Pat. No. 6,081,098, issued Jun. 27, 2000, entitled METHOD AND APPARATUS FOR CHARGING A BATTERY; U.S. Pat. No. 6,091,245, issued Jul. 18, 2000, entitled METHOD AND APPARATUS FOR AUDITING A BATTERY TEST; U.S. Pat. No. 6,104,167, issued Aug. 15, 2000, entitled METHOD AND APPARATUS FOR CHARGING A BATTERY; and U.S. Pat. No. 6,137,269, issued Oct. 24, 2000, entitled METHOD AND APPARATUS FOR ELECTRONICALLY EVALUATING THE INTERNAL TEMPERATURE OF AN ELECTROCHEMICAL CELL OR BATTERY.
With the advent of accurate battery testing, it has become apparent that in some instances the battery testing technique may not be appropriate for the particular purpose of the battery or configuration of multiple batteries.
SUMMARY OF THE INVENTION
An electronic battery tester for testing a storage battery, includes a dynamic measurement circuit configured to measure at least one dynamic parameter of the battery. A memory is configured to store a plurality of test criteria and an input is configured to receive input data related to a selected test criteria. A test circuit provides an output related to battery condition as a function of the dynamic parameter and the selected test criteria. In another aspect, a memory is configured to store a first dynamic parameter from the measurement circuitry related to a first battery of a battery pack. Balance circuitry provides an in-balance output if a second battery in the pack has a dynamic parameter which is substantially equal to the first dynamic parameter.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a simplified block diagram of a battery tester in accordance with the present invention.
FIG. 2 is a simplified diagram illustrating a tester in accordance with the present invention.
FIG. 3 is a simplified diagram illustrating a tester in accordance with the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
FIG. 1 is a simplified block diagram of a battery tester 10 in accordance with one embodiment of the present invention coupled to a vehicle 12. Vehicle 12 includes a battery 14 having positive and negative terminals, an alternator with internal regulator 16, various vehicle loads 18, and a starter motor 20. In operation, battery 14 provides power to starter 20 and vehicle loads 18 when the engine in vehicle 12 is not running. When the engine in vehicle 12 is running, alternator 16 is used to power vehicle loads 18 and provide a charging current to battery 14 to maintain the charge of battery 14.
Charging system tester 10 includes a microprocessor 30 which controls operation of tester 10 and provides instructions and test result information to an operator through, for example, a display 32. Tester 10 includes a battery testing section 34 which is illustrated generally as conductance amplifier 36. Section 34 operates in accordance with, for example, the conductance based battery testing techniques described in Champlin U.S. Pat. No. 3,873,911, issued Mar. 25, 1975, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE; U.S. Pat. No. 3,909,708, issued Sep. 30, 1975, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE; U.S. Pat. No. 4,816,768, issued Mar. 28, 1989, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE; U.S. Pat. No. 4,825,170, issued Apr. 25, 1989, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE WITH AUTOMATIC VOLTAGE SCALING; U.S. Pat. No. 4,881,038, issued Nov. 14, 1989, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE WITH AUTOMATIC VOLTAGE SCALING TO DETERMINE DYNAMIC CONDUCTANCE; U.S. Pat. No. 4,912,416, issued Mar. 27, 1990, to Champlin, entitled ELECTRONIC BATTERY TESTING DEVICE WITH STATE-OF-CHARGE COMPENSATION; U.S. Pat. No. 5,140,269, issued Aug. 18, 1992, to Champlin, entitled ELECTRONIC TESTER FOR ASSESSING BATTERY/CELL CAPACITY; U.S. Pat. No. 5,343,380, issued Aug. 30, 1994, entitled METHOD AND APPARATUS FOR SUPPRESSING TIME VARYING SIGNALS IN BATTERIES UNDERGOING CHARGING OR DISCHARGING; U.S. Pat. No. 5,572,136, issued Nov. 5, 1996, entitled ELECTRONIC BATTERY TESTER WITH AUTOMATIC COMPENSATION FOR LOW STATE-OF-CHARGE; U.S. Pat. No. 5,585,728, issued Dec. 17, 1996, entitled ELECTRONIC BATTERY TESTER WITH AUTOMATIC COMPENSATION FOR LOW STATE-OF-CHARGE; U.S. Pat. No. 5,598,098, issued Jan. 28, 1997, entitled ELECTRONIC BATTERY TESTER WITH VERY HIGH NOISE IMMUNITY; U.S. Pat. No. 5,821,756, issued Oct. 13, 1998, entitled ELECTRONIC BATTERY TESTER WITH TAILORED COMPENSATION FOR LOW STATE-OF-CHARGE. Section 34 is illustrated in very simplified form and conductance amplifier 36 provides an output to an analog to digital converter 38 which is related to the internal conductance of battery 14.
A DC voltage sensor 40 includes voltage scaling resistors 42 and 44 and is coupled to battery 14 to provide an output to analog to digital converter 38 which is representative of the DC voltage across battery 14. Further, an AC ripple detector amplifier 46 is coupled to battery 14 through capacitors 48 and 50 and provides an output to analog to digital converter 38 which is representative of the AC ripple voltage across battery 14.
Microprocessor 30 controls analog to digital converter 38 to select which of the three inputs to digitize. Microprocessor 30 includes firmware, memory, and a software program in accordance with the invention. The user input 54 is coupled to microprocessor 30 to provide the information to microprocessor 30 from an operator.
Preferably, tester 10 is portable such that it may be easily moved between vehicles or otherwise transported. Portability of tester 10 is achieved because tester 10 does not require large internal carbon pile loads to load the battery charging system.
Instead, as described herein, tester 10 utilizes loads internal to the vehicle 12 in testing the charging system. Further, the battery tester performed by tester 10 is in accordance with the non-load battery testing technique as described above.
In another aspect of the present invention, microprocessor 30 includes a memory which is capable of storing a number of different decision making algorithms or test criteria. The particular test criteria or algorithm can be selected through user input 54. For example, in one aspect, the test criteria is selected based upon the particular type of battery or rated reserve capacity of the battery. For example, if a battery is rated as having a particularly robust design with a large reserve capacity, the test criteria can be made more stringent such that an indication that the battery is “good” is only provided if the battery meets the higher test criteria.
FIG. 2 is a simplified block diagram of tester 10 in accordance with such an embodiment. In FIG. 2, tester 10 includes dynamic parameter measurement circuitry 80 which couples to battery 14 through Kelvin connections 82. Dynamic parameter measurement circuitry 80 can be any circuit configuration which measures a dynamic parameter of battery 14. As used herein, a dynamic parameter is one which is related to a signal having an AC component. The signal can be either applied directly or drawn from battery 14. Example dynamic parameters include dynamic resistance, conductance, impedance, admittance, etc. This list is not exhaustive, for example, a dynamic parameter can include a component value of an equivalent circuit of battery 14. Memory 84 is configured to store a plurality of different test criteria. For example, the test criteria can be a number of different thresholds or errors which are used to provide an indication as to whether the battery 14 is “good.” Input 54, which can comprise a user input, is coupled to test circuitry 86. Test circuitry 86 applies a selected test criteria for memory 84 based upon user input 54 to the dynamic parameter measured by dynamic parameter measurement circuitry 80. Based upon this comparison, an output is provided. FIG. 2 is a very simplified block diagram and in actual practice a number of the individual elements can be implemented in a single microprocessor and other circuit configurations. Input 64 can be any type of input and is hot limited to a user input.
In this aspect of the invention, the criteria used to test battery 14 can be adjusted based upon a particular aspect of battery 14. For example, if battery 14 is a new battery, a more stringent test can be applied to battery 14. Additionally, if battery 14 is intended to be used in an industrial vehicle or other situation which is very demanding of a battery, a more “difficult” or stringent test criteria can be provided. The test criteria can be based upon other factors to the dynamic parameter such as temperature or “static” parameters. The input from input 54 can be any type of input data and does not need to be user generated. Example input data includes every make, model, type, construction date, present date, temperature, vehicle type, VIN code, battery service requirements, requirements for a particular application, etc.
Tester 10 can test a battery which is formed by more than one individual battery. This is called a “battery pack”. For example, some vehicles such as large industrial vehicles include multiple batteries which are connected in series, parallel or series-parallel. In such an embodiment, element 14 in FIGS. 1 and 2 can represent such a pack such batteries can be particularly difficult to test and, in many prior art battery testers, have required the batteries to be disconnected and individually tested.
In accordance with one aspect of the present invention, microprocessor 30 tests the multiple batteries using a variety of appropriate techniques. Microprocessor 30 is capable of determining the configuration of the batteries (parallel, series or series-parallel) by measuring the voltage at the terminals of the “battery pack” and through receiving user input through input 54 indicating the number of batteries in the pack. Additionally, in some instances microprocessor 30 may also need to receive information related to the voltage of the individual batteries in the pack in order to make a determination as to the configuration of the pack. There are some instances where the configuration of the pack cannot be determined by simply knowing the voltage of individual batteries and taking measurements. A series of standard known configurations can be stored in the memory in tester 10 tester, and a user can select one such configuration. Configurations of battery packs include up to 12 batteries in parallel, three batteries in series and 12 batteries in series-parallel configurations. Microprocessor 30 is capable of determining the CCA rating and/or conductance of the entire battery pack using the information it has determined regarding the configuration of the battery pack. For example, in parallel configurations the CCA measurement is additive as is conductance, while in series-parallel or series configurations the voltage can be additive but the CCA/conductance can remain the same.
In one aspect, tester 10 is capable of detecting a good battery, a discharged battery, a bad cell, a bad battery, a marginal and/or defective wiring within a battery pack without disconnecting the pack. In one such embodiment, multiple test connections are used to connect to the battery pack. For example, one pair of connections can be used to connect to either end of the battery pack while another connection can be used to connect to points within the battery pack or to measure current flowing between points within the battery pack. Using this technique, the various currents flowing within the battery pack can be determined and this information can be used to detect a bad connection, such as a bad cable or poor physical connection between two points within the battery pack. Additionally, microprocessor 30 can instruct the user using display 32 to make various measurements at various points along the battery pack to more fully determine the condition of various portions of the battery pack.
In some instances, the microprocessor 30 can instruct the user to disconnect a certain battery within the battery pack in order to perform an isolated test on that battery.
In another aspect, microprocessor 30 uses advanced testing criteria or testing techniques such as fuzzy logic, neural networks or other artificial intelligence techniques to detect and make decisions regarding the health of a battery or a battery pack. Such techniques can also be used in evaluating time varying signals such as signals generated by the operation of alternator 16 or starter 20 in vehicle 12.
In another aspect, tester 10 includes a load such that a traditional load test can be performed on the battery 14. Such a load test is known in the art and is performed by applying a load to a battery and observing the effect of the applied load to the voltage or current flowing from the battery. In such an embodiment, such information can be used in conjunction with a resistance, impedance, conductance or admittance test of the battery 14 to identify a defect in the battery or otherwise determine the condition of the battery. This technique can also be used to measure the remaining or reserve capacity of the battery or battery pack. Such a testing technique provides additional information to microprocessor 30 which can then be used to make more advanced decisions regarding battery condition.
Microprocessor 30 can also compute, store, display or print out equivalent rating information regarding equivalent ratings of battery 14. Such equivalent ratings include CCA, SAE, DIN, TEC, EN, CA, MCA, JIS or others of the battery. In such an embodiment, microprocessor 30 can adjust for variations in the measured conductance of a battery pack due to cables between batteries in the pack or the connectors between the cables and the battery which can insert series resistances into the measurement. The adjustment can be based upon compensation data stored in a memory which is determined empirically by measuring different types of batteries or through other techniques. Particular compensation information can be determined through determining the configuration of batteries within a battery pack as described above. The compensation information can in the form of a multiplier which is used to multiply a conductance measurement.
In another aspect, measurements of battery conductance are used to “balance” the various batteries in a battery pack such that they are selected and arranged for delivering optimized current and/or receiving optimized charge current. This aspect is illustrated in FIG. 3. For example, if a 600 CCA battery is placed in series with a 500 CCA battery, one of the batteries will tend to become overcharged while the other battery will tend to be undercharged. Tester 10 can alert an operator regarding the unbalanced condition of the batteries within the pack. Tester 10 can prompt a user to disconnect certain batteries within the pack and perform individual tests on the batteries to determine which battery is unbalanced from the others. This will also assist in selecting the batteries used in the battery pack.
FIG. 3 illustrates a simplified diagram of this aspect of tester 10 and includes a dynamic parameter measurement circuit 80 coupled to battery 14 through connection 90. Battery 14 is illustrated as multiple batteries, in this case three separate batteries 14A, 14B and 14C. These batteries can be connected in series, parallel or series parallel. Connection 90 can be a single pair of Kelvin connectors which are selectively positioned between or on various batteries in pack 14. There can be more than two Kelvin connections which are coupled to pack 14. Memory 94 stores a first dynamic parameter from dynamic parameter measurement circuit 80 related to a dynamic parameter of at least one battery 14A, 14B or 14C within battery pack 14. Balance circuit 92 provides an in-balance output if a second dynamic parameter of a second battery or batteries within pack 14 is “substantially equal” to the dynamic parameter stored in memory 94. As used in this context, the term “substantially equal” means that the two dynamic parameters are within a predetermined or adjustable percentage or fixed amount from one another. If the two dynamic parameters are measured simultaneously, memory 94 is not required to store a dynamic parameter. In a further embodiment of this aspect of the invention, a static parameter such as voltage is used in determining if the batteries are within balance. For example, the two batteries are within 0.1 volts of each other (i.e., 12.5 and 12.6 volts) and the conductance within 10%, an in-balance indication is provided. In another example, less than a 0.05 volt difference is required in addition to the dynamic parameter requirement. Additionally, data from multiple batteries can be stored in memory 94 and a preferred configuration of the batteries can be provided by balance circuitry 92 on its output. Information regarding the configuration of battery pack 14 can be received through the input 54 shown in FIGS. 1 and 2 and the output from balance circuit 92 adjusted accordingly.
The condition of cables or connectors can be determined by applying a large load, such as through an internal load in battery tester 10 or through application of a vehicle load 18, or through the application of a large resistance, for example more than about 0.1 ohms. An amp clamp measurement can also be used. Further, microprocessor 30 can prompt a user to measure voltage drops across various cables in the pack and make a decision (i.e., good/bad) regarding a cable or connection in the battery pack. Microprocessor 30 can store, display, print and manage multiple test results associated with the multiple test measurements made when measuring a number of batteries which make a battery pack. This can be partial measurement, parameter, or other items related to individual batteries within the pack.
In one aspect, battery tester 10 is configured to determine the CCA rating of a battery or battery pack having a relatively large CCA value, for example, up to 5000 CCA. In such an embodiment, sensitive amplifiers and/or relatively large current values can be used to obtain the CCA or conductance measurement. In another aspect, tester 10 can perform a test on vehicle 12 by instructing an operator to apply a load (i.e., head lights, blower, etc.) or a combination of loads and preserve the response from battery 14. This information can be used to determine diagnostic information regarding battery 14 out of the operation of components within vehicle 12.
With one aspect of the invention, the tester can be used to test the “straps” that are used to couple individual batteries together to form a-battery pack. For example, a dynamic parameter can be measured with the Kelvin probes applied directly to the battery. A second dynamic parameter can be measured in which one of the straps separates a Kelvin probe from the battery. A microprocessor can then compute the dynamic parameter of the strap alone and provide an output if the strap is poor. For example, if the strap dynamic conductance is too low, a warning can be provided. This technique can be extended to test multiple straps. In addition to testing straps within the pack, this technique can also be used to test cables that connect to the battery. Dynamic parameters can be stored in the memory for use in subsequent computations or multiple Kelvin probes can be used to simultaneously measure multiple dynamic parameters.
In some aspects, a separate current probe can be used, such as a shunt, amp clamp or Hall effect sensor, to measure the current flowing into or out of a battery or group of batteries under test. This data can be paired with voltage measurements to obtain static or dynamic parameters.
The tester can store measurements in memory such that the battery pack can be ranked in terms of performance.
Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2000665||Feb 10, 1930||May 7, 1935||Joseph Weidenhoff||Battery clip|
|US2417940||Oct 28, 1943||Mar 25, 1947||Stanley Lehman||Pressure drop alarm|
|US2514745||Dec 19, 1946||Jul 11, 1950||Heyer Ind Inc||Changeable scale electrical testing instrument|
|US2727221||Oct 18, 1954||Dec 13, 1955||Breeze Corp||Tire pressure warning system|
|US3178686||Feb 29, 1960||Apr 13, 1965||Metallurg Resources Inc||Pulsed tire pressure monitor|
|US3223969||Jul 22, 1963||Dec 14, 1965||Lawrence Course Alexander||Tire pressure indicating apparatus for road vehicles|
|US3267452||Dec 23, 1963||Aug 16, 1966||Associated Equipment Corp||Battery charger clamp and polarity detector|
|US3356936||Feb 12, 1964||Dec 5, 1967||Litton Prec Products Inc||Method and means for total battery voltage testing|
|US3562634||Dec 16, 1968||Feb 9, 1971||Atomic Energy Commission||Method for determining the state of charge of nickel cadmium batteries by measuring the farad capacitance thereof|
|US3593099||Jul 24, 1969||Jul 13, 1971||Scholl Hans K||Automatic battery tester with recording means for battery performance|
|US3607673||Mar 18, 1968||Sep 21, 1971||Magna Corp||Method for measuring corrosion rate|
|US3652341||May 12, 1970||Mar 28, 1972||Globe Union Inc||Method of making a dry charged battery|
|US3676770||May 15, 1970||Jul 11, 1972||Anderson Power Products||Pulse sampling battery fuel gauging and resistance metering method and means|
|US3729989||Dec 10, 1970||May 1, 1973||Little D||Horsepower and torque measuring instrument|
|US3750011||Mar 20, 1972||Jul 31, 1973||Farmland Ind||Battery testing method employing capacitance and dissipation factor measurements|
|US3753094||Jul 24, 1972||Aug 14, 1973||Matsushita Electric Ind Co Ltd||Ohmmeter for measuring the internal resistance of a battery and directly reading the measured resistance value|
|US3796124||Nov 9, 1971||Mar 12, 1974||V Crosa||Clamping system|
|US3808522||Nov 3, 1972||Apr 30, 1974||Anderson Power Products||Method of testing the capacity of a lead-acid battery|
|US3811089||Jul 14, 1972||May 14, 1974||Gen Motors Corp||Remote engine tachometer|
|US3816805 *||May 16, 1973||Jun 11, 1974||Maremont Corp||Dual battery electrical system for internal combustion engine|
|US3850490||Oct 25, 1973||Nov 26, 1974||Protectoseal Co||Grounding clamping lever|
|US3873911||Feb 22, 1973||Mar 25, 1975||Champlin Keith S||Electronic battery testing device|
|US3876931||Dec 26, 1973||Apr 8, 1975||Fox Prod Co||Method and apparatus for determining battery performance at one temperature when battery is at another temperature|
|US3886426 *||Mar 16, 1973||May 27, 1975||Eagle Picher Ind Inc||Battery switching circuit|
|US3886443||May 29, 1973||May 27, 1975||Asahi Optical Co Ltd||Electric camera shutter with voltage checking circuit|
|US3889248||May 21, 1973||Jun 10, 1975||Ritter Esther||Faulty battery connection indicator|
|US3906329||Aug 27, 1973||Sep 16, 1975||Deutsche Automobilgesellsch||Method of measuring the charge condition of galvanic energy sources and apparatus for carrying out this method|
|US3909708||Jan 2, 1974||Sep 30, 1975||Keith S Champlin||Electronic battery testing device|
|US3936744||Apr 30, 1974||Feb 3, 1976||David Perlmutter||Automotive alternator and solid state regulator tester|
|US3946299||Feb 11, 1975||Mar 23, 1976||Gould, Inc.||Battery state of charge gauge|
|US3947757||Feb 24, 1975||Mar 30, 1976||Grube Donald B||Voltage regulator tester|
|US3969667||Dec 20, 1974||Jul 13, 1976||The United States Of America As Represented By The Secretary Of The Navy||Device for determining the state of charge in batteries|
|US3979664||Mar 3, 1975||Sep 7, 1976||Brunswick Corporation||Capacitor discharge ignition testing apparatus employing visual spark gap indicator|
|US3984762||Mar 7, 1975||Oct 5, 1976||The United States Of America As Represented By The Secretary Of The Army||Method for determining battery state of charge by measuring A.C. electrical phase angle change|
|US3984768||Jun 11, 1975||Oct 5, 1976||Champion Spark Plug Company||Apparatus for high voltage resistance measurement|
|US3989544||Jul 28, 1975||Nov 2, 1976||Santo Charles P||Quick disconnect battery|
|US4008619||Nov 17, 1975||Feb 22, 1977||Mks Instruments, Inc.||Vacuum monitoring|
|US4023882||May 10, 1976||May 17, 1977||Borge Hugo Pettersson||Electrical connector device securable to metal member|
|US4024953||Jun 18, 1976||May 24, 1977||E. I. Du Pont De Nemours And Company||Battery snap terminal|
|US4047091||Jul 21, 1976||Sep 6, 1977||National Semiconductor Corporation||Capacitive voltage multiplier|
|US4053824||Jul 26, 1976||Oct 11, 1977||Compagnie Europeenne D'accumulateurs S.A.||Method and device for checking a storage battery|
|US4056764||May 30, 1975||Nov 1, 1977||Nissan Motor Company, Limited||Power supply system having two different types of batteries and current-limiting circuit for lower output battery|
|US4057313||Jul 19, 1976||Nov 8, 1977||Ida Polizzano||Test clip|
|US4070624||Jul 26, 1976||Jan 24, 1978||American Generator & Armature Co.||Apparatus for testing starters and alternators|
|US4086531||Apr 26, 1976||Apr 25, 1978||Compunetics, Incorporated||Electrical system test apparatus|
|US4106025||Oct 22, 1976||Aug 8, 1978||Sidney Katz||Coupling converter for vehicle antennas|
|US4112351||Sep 1, 1977||Sep 5, 1978||United Technologies Corporation||Dual threshold low coil signal conditioner|
|US4114083||Jun 15, 1977||Sep 12, 1978||The United States Of America As Represented By The Secretary Of The Navy||Battery thermal runaway monitor|
|US4126874||Dec 20, 1976||Nov 21, 1978||Canon Kabushiki Kaisha||Power supply circuit for camera|
|US4160916||Sep 12, 1977||Jul 10, 1979||Caterpillar Tractor Co.||Engine stop-start electrical circuit|
|US4178546||Jan 6, 1978||Dec 11, 1979||Rca Corporation||Alternator test apparatus and method|
|US4193025||Dec 23, 1977||Mar 11, 1980||Globe-Union, Inc.||Automatic battery analyzer|
|US4207611||Dec 18, 1978||Jun 10, 1980||Ford Motor Company||Apparatus and method for calibrated testing of a vehicle electrical system|
|US4217645||Apr 25, 1979||Aug 12, 1980||Barry George H||Battery monitoring system|
|US4280457||Apr 13, 1979||Jul 28, 1981||Bloxham Steven R||System for monitoring and improving motor vehicle operating efficiency|
|US4297639||Jul 18, 1979||Oct 27, 1981||Branham Tillman W||Battery testing apparatus with overload protective means|
|US4315204||May 22, 1980||Feb 9, 1982||Motorola, Inc.||Ripple detector for automotive alternator battery charging systems|
|US4316185||Jul 17, 1980||Feb 16, 1982||General Electric Company||Battery monitor circuit|
|US4322685||Feb 29, 1980||Mar 30, 1982||Globe-Union Inc.||Automatic battery analyzer including apparatus for determining presence of single bad cell|
|US4351405||Nov 30, 1979||Sep 28, 1982||Hybricon Inc.||Hybrid car with electric and heat engine|
|US4352067||Jun 2, 1980||Sep 28, 1982||Dc Electronic Industries, Inc.||Battery analyzer|
|US4360780||Oct 30, 1981||Nov 23, 1982||Skutch Jr William G||Dual voltage battery tester|
|US4361809||Nov 20, 1980||Nov 30, 1982||Ford Motor Company||Battery diagnostic method and apparatus|
|US4363407||Jan 22, 1981||Dec 14, 1982||Polaroid Corporation||Method and system for testing and sorting batteries|
|US4369407||Aug 24, 1981||Jan 18, 1983||Sheller-Globe Corporation||Regulator tester|
|US4379989||May 6, 1980||Apr 12, 1983||Robert Bosch Gmbh||System for preventing damage to a battery charger due to application of a battery with wrong polarity|
|US4379990||May 22, 1980||Apr 12, 1983||Motorola Inc.||Fault detection and diagnostic system for automotive battery charging systems|
|US4385269||Jan 9, 1981||May 24, 1983||Redifon Telecommunications Limited||Battery charger|
|US4390828||Mar 17, 1982||Jun 28, 1983||Transaction Control Industries||Battery charger circuit|
|US4392101||Jan 5, 1982||Jul 5, 1983||Black & Decker Inc.||Method of charging batteries and apparatus therefor|
|US4396880||Jun 5, 1981||Aug 2, 1983||Firing Circuits Inc.||Method and apparatus for charging a battery|
|US4408157||May 4, 1981||Oct 4, 1983||Associated Research, Inc.||Resistance measuring arrangement|
|US4412169||Nov 25, 1981||Oct 25, 1983||Marelli Autronica S.P.A.||Circuit for detecting and indicating faults and operating anomalies in a system for recharging electric accumulators|
|US4423378||Dec 4, 1981||Dec 27, 1983||Bear Automotive Service Equipment Company||Automotive battery test apparatus|
|US4423379 *||Mar 31, 1981||Dec 27, 1983||Sun Electric Corporation||Battery testing techniques|
|US4424491||May 20, 1981||Jan 3, 1984||The United States Of America As Represented By The United States Department Of Energy||Automatic voltage imbalance detector|
|US4459548||Nov 12, 1981||Jul 10, 1984||Snap-On Tools Corporation||Alternator testing apparatus|
|US4514694||Jul 23, 1982||Apr 30, 1985||Curtis Instruments||Quiescent battery testing method and apparatus|
|US4520353||Mar 26, 1982||May 28, 1985||Outboard Marine Corporation||State of charge indicator|
|US4521498||Jul 22, 1982||Jun 4, 1985||Gates Energy Products, Inc.||Through-the-partition intercell connection and method|
|US4564798||Oct 6, 1982||Jan 14, 1986||Escutcheon Associates||Battery performance control|
|US4620767||Feb 21, 1985||Nov 4, 1986||East Penn Manufacturing Co., Inc.||Combination battery booster cable connector|
|US4633418||Jul 11, 1984||Dec 30, 1986||The United States Of America As Represented By The Secretary Of The Air Force||Battery control and fault detection method|
|US4637359||Mar 4, 1985||Jan 20, 1987||Cook Norman E||Electronic detection device for motorized vehicles|
|US4659977||Oct 1, 1984||Apr 21, 1987||Chrysler Motors Corporation||Microcomputer controlled electronic alternator for vehicles|
|US4663580||Jan 9, 1986||May 5, 1987||Seiscor Technologies, Inc.||Sealed lead-acid battery float charger and power supply|
|US4665370||Sep 15, 1980||May 12, 1987||Holland John F||Method and apparatus for monitoring and indicating the condition of a battery and the related circuitry|
|US4667143||Dec 23, 1985||May 19, 1987||Phillips Petroleum Company||Battery charger having temperature compensated charge rate|
|US4667279||Apr 1, 1986||May 19, 1987||Hewlett-Packard Company||Transformer coupled pard bucker for DC power supplies|
|US4678998||Dec 9, 1985||Jul 7, 1987||Nissan Motor Company, Limited||Battery condition monitor and monitoring method|
|US4679000||Jun 20, 1985||Jul 7, 1987||Robert Clark||Bidirectional current time integration device|
|US4680528||Mar 4, 1986||Jul 14, 1987||Toko, Inc.||Battery charging device|
|US4686442||Apr 28, 1986||Aug 11, 1987||General Motors Corporation||Dual voltage electrical system|
|US4697134||Jul 31, 1986||Sep 29, 1987||Commonwealth Edison Company||Apparatus and method for measuring battery condition|
|US4707795||Jun 20, 1985||Nov 17, 1987||Alber Engineering, Inc.||Battery testing and monitoring system|
|US4709202||Jun 19, 1986||Nov 24, 1987||Norand Corporation||Battery powered system|
|US4710861||Jun 3, 1986||Dec 1, 1987||Martin Kanner||On a d.c. signal|
|US4719428||Jun 4, 1985||Jan 12, 1988||Tif Instruments, Inc.||Storage battery condition tester utilizing low load current|
|US4723656||Jun 4, 1987||Feb 9, 1988||Duracell Inc.||Battery package with battery condition indicator means|
|US4743855||Nov 3, 1986||May 10, 1988||Randin Jean Paul||Method of and apparatus for measuring the state of discharge of a battery|
|US4745349||Oct 16, 1986||May 17, 1988||Allied Corporation||Apparatus and method for charging and testing batteries|
|US4773011||Jan 27, 1986||Sep 20, 1988||The Goodyear Tire & Rubber Company||Method of surveying, selecting, evaluating, or servicing the tires of vehicles|
|US5332927 *||Feb 25, 1993||Jul 26, 1994||Best Power Technology, Inc.||Power supply system for a telecommunication system|
|US5744962 *||Mar 14, 1995||Apr 28, 1998||Alber; Glenn||Automated data storing battery tester and multimeter|
|US5747189 *||Jul 22, 1992||May 5, 1998||Valence Technology, Inc.||Smart battery|
|US6037778 *||Nov 5, 1997||Mar 14, 2000||Stat Engineering Company, L.L.C.||Electronic battery testing device and method for testing batteries|
|US6061638 *||Jul 30, 1997||May 9, 2000||Auto Meter Products, Inc.||Microprocessor-based battery tester system|
|US6100670 *||Apr 14, 1998||Aug 8, 2000||Conexant Systems, Inc.||Multi-functional battery management module operable in a charging mode and a battery pack mode|
|US6254438 *||Oct 21, 1999||Jul 3, 2001||Snap-On Tools Company||Battery side-terminal adapter and Kelvin connector|
|US6271643 *||Feb 24, 2000||Aug 7, 2001||Intermec Ip Corp.||Battery pack having memory|
|US6313608 *||May 22, 2000||Nov 6, 2001||Midtronics, Inc.||Method and apparatus for charging a battery|
|US6332113 *||May 3, 1999||Dec 18, 2001||Midtronics, Inc.||Electronic battery tester|
|US6420852 *||Aug 19, 1999||Jul 16, 2002||Sony Corporation||Battery pack|
|1||"#12: LM78S40 Simple Switcher DC to DC Converter", ITM e-Catalog, downloaded from http://www.pcbcafe.com, undated.|
|2||"A Bridge for Measuring Storage Battery Resistance", by E. Willïhncanz, The Electrochemical Society, preprint 79-20, Apr. 1941, pp. 253-258.|
|3||"A Look at the Impedance of a Cell", by S. Debardelaben, IEEE, 1988, pp. 394-397.|
|4||"A review of impedance measurements for determination of the state-of-charge or state-of-health of secondary batteries", Journal of Power Sources, pp. 59-69, (1998).|
|5||"Alligator Clips with Wire Penetrators" J.S. Popper, Inc. product information, downloaded from http://www.jspopper.com/ , undated.|
|6||"DC-DC Converter Basics", Power Designers, downloaded from http://www.powederdesigners.com/InforWeb.design-center/articles/DC-DC/converter.shtm, undated.|
|7||"Determining The End of Battery Life", by S. DeBardelaben, IEEE, 1986, pp. 365-368.|
|8||"Dynamic modelling of lead/acid batteries using impedance spectroscopy for parameter identification", Journal of Power Sources, pp. 69-84, (1997).|
|9||"Electrochemical Impedance Spectroscopy in Battery Development and Testing", Batteries International, Apr. 1997, pp. 59 and 62-63.|
|10||"Examination Report" from the UK Patent Office for App. No. 0417678.0; Jan. 24, 2005.|
|11||"Field and Laboratory Studies to Assess the State of Health of Valve-Regulated Lead Acid Batteries: Part I Conductance/Capacity Correlation Studies", by D. Feder et al., IEEE, Aug. 1992, pp. 218-233.|
|12||"Improved Impedance Spectroscopy Technique For Status Determination of Production Li/SO2 Batteries" Terrill Atwater et al., pp. 10-113, (1992).|
|13||"JIS Japanese Industrial Standard-Lead Acid Batteries for Automobiles", Japanese Standards Association UDC, 621.355.2:629.113.006, Nov. 1995.|
|14||"Notification of Transmittal of The International Search Report or the Declaration", PCT/US02/29461.|
|15||"Notification of Transmittal of the International Search Report or the Declaration", PCT/US03/06577.|
|16||"Notification of Transmittal of The International Search Report or the Declaration", PCT/US03/07546.|
|17||"Notification of Transmittal of The International Search Report or the Declaration", PCT/US03/29461.|
|18||"Office Action" from corresponding U.S. Appl. No. 10/896,834.|
|19||"Performance of Dry Cells", by C. Hambuechen, Preprint of Am. Electrochem. Soc., Apr. 18-20, 1912, paper No. 19, pp. 1-5.|
|20||"Results of Discrete Frequency Immittance Spectroscopy (DFIS) Measurements of Lead Acid Batteries", by K.S. Champlin et al., Proceedings of 23rd International Teleco Conference (INTELEC), published Oct. 2001, IEE, pp. 433-440.|
|21||"Search Report Under Section 17" for Great Britain Application No. GB0421447.4.|
|22||"Simple DC-DC Converts Allows Use of Single Battery", Electronix Express, downloaded from http://www.elexp.com/t-dc-dc.htm, undated.|
|23||Allen Test, Testproducts Division, "Programmed Training Course for 62-000 Series Smart Engine Analyzer," 2 page cover, Table of Contents, pp. 1-207 (1984).|
|24||Burr-Brown Corporation, "Design A 60 Hz Notch Filter with the UAF42", Jan. 1994, AB-071, 1994.|
|25||IEEE Recommended Practice For Maintenance, Testings, and Replacement of Large Lead Storage Batteries for Generating Stations and Substations, The Institute of Electrical and Electronics Engineers, Inc., ANSI/IEEE Std. 450-1987, Mar. 9, 1987, pp. 7-15.|
|26||Internal Resistance: Harbinger of Capacity Loss in Starved Electrolyte Sealed Lead Acid Batteries, by Vaccaro, F.J. et al., AT&T Bell Laboratories, 1987 IEEE, Ch. 2477, pp. 128,131.|
|27||National Semiconductor Corporation, "High Q Notch Filter", Mar. 1969, Linear Brief 5, Mar. 1969.|
|28||National Semiconductor Corporation, "LMF90-4th-Order Elliptic Notch Filter", Dec. 1994, RRD-B30M115, Dec. 1994.|
|29||Notification of Transmittal of the International Search Report along with the Search Report for International Application No. PCT/US03/27696, filed Sep. 4, 2003, dated of mailing Apr. 15, 2004.|
|30||Notification of Transmittal of the International Search Report for PCT/US03/30707.|
|31||Operator's Manual for "Modular Computer Analyzer," SUN, Model MCA 3000, Table of Contents and pp. 1-1 to 1-2; 2-1 to 2-19; 3-1 to 3-47; 4-1 to 4-27; 5-1 to 5-18; 6-1 to 6-16; 7-1 to 7-9; 8-1 to 8-5; 9-1 to 9-13; 10-1 to 10-10; 11-1 to 11-22; 12-1 to 12-33; 13-1 to 13-2; 14-1 to 14-13 (1991).|
|32||Wikipedia Online Encyclopedia, Inductance, 2005, http://en.wikipedia.org/wiki/inductance, pp. 1-5, mutual Inductance, pp. 3,4.|
|33||Young Illustrated Encyclopedia Dictionary of Electronics, 1981, Parker Publishing Company, Inc., pp. 318-319.|
|34|| *||Young-Illustrated Encyclopedia Dictionary of Electronics, 1981, Parker Publishing Company Inc., pp. 318-319.|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US8710847||Oct 28, 2011||Apr 29, 2014||Donald Marvin||Self-correcting amplifier system|
|US8738310||Dec 8, 2010||May 27, 2014||Paul Swanton||Automatic determination of baselines for battery testing|
|US20110257913 *||Mar 15, 2011||Oct 20, 2011||Philbrook John S||Electronic battery tester with battery age input|
| || |
|U.S. Classification||324/437, 320/128, 320/119, 320/124|
|International Classification||H02J7/00, G01R31/00, H02J7/16, G01N27/416, G01R31/36|
|Cooperative Classification||H02J7/008, G01R31/007, G01R31/005, H02J7/163, G01R31/3662, G01R31/362, G01R31/3668, H02J7/0004, H02J7/0008, G01R31/3631, G01R31/3665, G01R31/3648, G01R31/3641, G01R31/3651, G01R31/3675, G01R31/3693|
|European Classification||H02J7/16B, G01R31/36T2, H02J7/00M10C3, G01R31/36V1, H02J7/00B1, H02J7/00B2A, G01R31/36V3|
|Dec 27, 2012||FPAY||Fee payment|
Year of fee payment: 4
|Jul 26, 2011||CC||Certificate of correction|