US Patent No: 5,451,881

Number of patents in Portfolio can not be more than 2000

Method and means for adjusting battery monitor based on rate of current drawn from the battery

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Abstract

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In a preferred embodiment, a metering system for measuring and indicating the state of charge of an electrical storage battery, including: apparatus for storing a numerical value indicative of the state of charge of the battery and for providing an output voltage signal representative thereof; apparatus for detecting the terminal voltage of the battery, coupled to the apparatus for storing, and being operable to generate a function of the battery terminal voltage which is a substantially proportional fraction of the terminal voltage and to provide an input to the apparatus for storing if the function is below a threshold variable reference voltage signal; apparatus for receiving the output voltage signal and for generating the variable reference voltage signal therefrom, the variable reference voltage signal being lowered as a function of the output voltage signal as the output voltage signal indicates progressively lower states of charge; and apparatus for measuring the level of current drawn from the battery and adjusting the apparatus for receiving and generating, in proportion to the current level, such that the variable reference voltage signal will be greater or lesser depending on the current level.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
CURTIS INSTRUMENTS, INC.MT KISCO, NY12

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Finger, Eugene P Brewster, NY 22 711

Cited Art Landscape

Patent Info (Count) # Cites Year
 
PURDUE RESEARCH FOUNDATION (1)
* 4,390,841 Monitoring apparatus and method for battery power supply 120 1980
 
Curtis Instruments, Inc. (1)
* 4,560,937 Battery state of charge metering method and apparatus 57 1981
 
Cristec Industries (1)
* 4,453,129 Method for measuring the charge state of an accumulator and a device for implementing such method 5 1981
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
YAZAKI CORPORATION (1)
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Other [Check patent profile for assignment information] (10)
6,313,607 Method and apparatus for evaluating stored charge in an electrochemical cell or battery 124 1999
6,294,897 Method and apparatus for electronically evaluating the internal temperature of an electrochemical cell or battery 221 2000
6,294,896 Method and apparatus for measuring complex self-immitance of a general electrical element 125 2000
6,417,669 Suppressing interference in AC measurements of cells, batteries and other electrical elements 111 2001
6,495,990 Method and apparatus for evaluating stored charge in an electrochemical cell or battery 111 2001
6,466,026 Programmable current exciter for measuring AC immittance of cells and batteries 111 2001
6,737,831 Method and apparatus using a circuit model to evaluate cell/battery parameters 73 2002
6,621,272 Programmable current exciter for measuring AC immittance of cells and batteries 58 2002
6,806,716 Electronic battery tester 65 2004
9,255,955 Method and apparatus for measuring a parameter of a vehicle electrical system 0 2011
 
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Interstate Battery System of America (1)
7,940,053 Battery tester with promotion feature 21 2010
 
SAGEM AVIONICS, LLC (1)
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Curtis Instruments, Inc. (1)
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Friwo Geraetebau GmbH (2)
* 6,906,498 Device and method for the detection of a charging voltage 3 2003
* 2003/0214,268 Device and method for the detection of a charging voltage 1 2003
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (2)
* 6,356,083 State of charge algorithm for a battery 47 2001
* 2012/0187,916 Virtual Charge for Electric Vehicles 2 2011
 
MEMSIC TRANSDUCER SYSTEMS CO., LTD. (2)
* 7,554,299 Battery monitoring circuit and method 4 2005
* 2006/0226,844 Battery monitoring circuit and method 5 2005
 
VITAL INNOVATIONS, INC. (1)
* 6,222,370 Universal battery monitor 14 1999
 
STEWART, ALBERT E. (1)
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ORACLE AMERICA, INC. (2)
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KEITHLEY INSTRUMENTS, INC. (1)
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FUJI JUKOGYO KABUSHIKI KAISHA (1)
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NEC CORPORATION (1)
* 6,038,515 Portable information terminal apparatus capable of correctly detecting power supply voltage 9 1997
 
UNWIRED PLANET, LLC (1)
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VB AUTOBATTERIE GMBH (2)
* 6,967,466 Method for determining the amount of charge which can be drawn on a storage battery, and monitoring device for a storage battery 37 2003
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BOARD OF REGENTS OF THE NEVADA SYSTEM OF HIGHER EDUCATION, ON BEHALF OF THE UNIVERSITY OF NEVADA, RENO (1)
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SCHLUMBERGER TECHNOLOGY CORPORATION (2)
* 7,105,249 Pressure-compensated downhole battery 12 2003
* 2004/0248,001 Pressure-compensated downhole battery 5 2003
 
KULITE SEMICONDUCTOR PRODUCTS, INC. (1)
* 8,975,898 Shunt calibration for electronic pressure switches 0 2011
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (2)
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* 6,836,122 Deterioration degree calculating apparatus and deterioration degree calculating method for a battery 8 2003
 
SUMITOMO WIRING SYSTEMS, LTD. (1)
* 6,701,262 Current detecting circuit 2 2001
 
MIDRONICS, INC. (1)
7,408,358 Electronic battery tester having a user interface to configure a printer 24 2003
 
CANON KABUSHIKI KAISHA (1)
* 6,150,823 Battery charge detecting variable loads 26 1992
 
QUANTA COMPUTER INC. (2)
* 8,606,533 Battery gas-gauge circuit and method thereof 1 2010
* 2010/0324,847 BATTERY GAS-GAUGE CIRCUIT AND METHOD THEREOF 1 2010
 
GENERAL ELECTRIC COMPANY (2)
* 7,960,855 System and method for providing power control of an energy storage system 2 2004
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OPERATING TECHNICAL ELECTRONICS, INC. (1)
* 5,668,465 Battery voltage monitor and disconnection circuit 14 1996
 
SGS-THOMSON MICROELECTRONICS S.R.L. (1)
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INTERSTATE BATTERY SYSTEM OF AMERICA, INC. (3)
6,930,485 Electronic battery tester with battery failure temperature determination 55 2003
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VILLANOVA UNIVERSITY (5)
6,456,988 Method for determining state-of-health using an intelligent system 15 1998
* 6,011,379 Method for determining state-of-charge using an intelligent system 43 1998
6,691,095 Method and system to determine state-of-health of a fuel cell using an intelligent system 3 2002
6,668,247 Method and system for determining state-of-health of a lead-acid defibrillator battery using an intelligent system 4 2002
7,051,008 Method and system for determining state-of-health of a nickel-metal hydride battery using an intelligent system 2 2002
 
FUJITSU LIMITED (2)
* 5,841,284 Apparatus for monitoring power of battery to supply electric power to load 15 1995
* 6,054,861 Apparatus for monitoring power of battery to supply electric power to load 16 1998
 
Flight Systems, Inc. (1)
* 5,698,965 Apparatus and method for determining the current state of charge of a battery by monitoring battery voltage increases above and decreases below a threshold 30 1996
 
Midtronics, Inc. (118)
6,351,102 Automotive battery charging system tester 125 1999
6,332,113 Electronic battery tester 131 1999
6,363,303 Alternator diagnostic system 121 1999
6,466,025 Alternator tester 112 2000
6,225,808 Test counter for electronic battery tester 125 2000
6,323,650 Electronic battery tester 132 2000
6,359,441 Electronic battery tester 115 2000
6,331,762 Energy management system for automotive vehicle 196 2000
6,445,158 Vehicle electrical system tester with encoded output 150 2000
6,329,793 Method and apparatus for charging a battery 129 2000
6,313,608 Method and apparatus for charging a battery 142 2000
6,441,585 Apparatus and method for testing rechargeable energy storage batteries 129 2000
* 6,304,087 Apparatus for calibrating electronic battery tester 119 2000
6,316,914 Testing parallel strings of storage batteries 137 2000
6,566,883 Electronic battery tester 96 2000
6,586,941 Battery tester with databus 94 2001
6,456,045 Integrated conductance and load test based electronic battery tester 108 2001
6,392,414 Electronic battery tester 151 2001
6,424,158 Apparatus and method for carrying out diagnostic tests on batteries and for rapidly charging batteries 123 2001
6,544,078 Battery clamp with integrated current sensor 93 2001
6,469,511 Battery clamp with embedded environment sensor 61 2001
6,633,165 In-vehicle battery monitor 77 2001
6,909,287 Energy management system for automotive vehicle 72 2001
7,198,510 Kelvin connector for a battery post 28 2001
6,707,303 Electronic battery tester 64 2001
6,696,819 Battery charge control device 62 2002
6,871,151 Electronic battery tester with network communication 70 2002
6,885,195 Method and apparatus for auditing a battery test 57 2002
6,556,019 Electronic battery tester 103 2002
7,015,674 Booster pack with storage capacitor 32 2002
6,906,522 Battery tester with battery replacement output 55 2002
6,906,523 Method and apparatus for testing cells and batteries embedded in series/parallel systems 56 2002
6,788,025 Battery charger with booster pack 68 2002
7,126,341 Automotive vehicle electrical system diagnostic device 61 2002
7,058,525 Battery test module 69 2002
7,012,433 Battery tester upgrade using software key 49 2002
6,850,037 In-vehicle battery monitor 71 2002
6,759,849 Battery tester configured to receive a removable digital module 64 2002
7,039,533 Battery test module 29 2002
6,795,782 Battery test module 70 2002
6,781,382 Electronic battery tester 61 2002
6,888,468 Apparatus and method for protecting a battery from overdischarge 65 2003
6,801,040 Electronic battery tester with battery failure temperature determination 0 2003
6,891,378 Electronic battery tester 52 2003
7,557,586 Electronic battery tester 26 2003
6,967,484 Electronic battery tester with automotive scan tool communication 48 2003
6,933,727 Electronic battery tester cable 47 2003
6,913,483 Cable for electronic battery tester 54 2003
7,723,993 Electronic battery tester configured to predict a load test result based on open circuit voltage, temperature, cranking size rating, and a dynamic parameter 26 2003
7,081,755 Battery tester capable of predicting a discharge voltage/discharge current of a battery 57 2003
7,154,276 Method and apparatus for measuring a parameter of a vehicle electrical system 26 2003
6,914,413 Alternator tester with encoded output 55 2003
6,941,234 Query based electronic battery tester 51 2003
6,919,725 Electronic battery tester/charger with integrated battery cell temperature measurement device 60 2003
7,116,109 Apparatus and method for simulating a battery tester with a fixed resistance load 50 2003
7,208,914 Apparatus and method for predicting the remaining discharge time of a battery 33 2003
7,598,699 Replaceable clamp for electronic battery tester 29 2004
8,198,900 Automotive battery charging system tester 4 2004
7,479,763 Apparatus and method for counteracting self discharge in a storage battery 26 2004
7,119,686 Theft prevention device for automotive vehicle service centers 59 2004
7,501,795 Battery charger with booster pack 24 2004
7,246,015 Alternator tester 31 2004
7,688,074 Energy management system for automotive vehicle 44 2004
7,003,410 Electronic battery tester with relative test output 50 2004
6,998,847 Electronic battery tester with data bus for removable module 48 2004
7,656,162 Electronic battery tester with vehicle type input 26 2004
7,106,070 Broad-band low-inductance cables for making Kelvin connections to electrochemical cells and batteries 47 2004
7,319,304 Shunt connection to a PCB of an energy management system employed in an automotive vehicle 30 2004
7,003,411 Electronic battery tester with network communication 66 2004
7,999,505 In-vehicle battery monitor 28 2004
7,446,536 Scan tool for electronic battery tester 40 2004
7,545,146 Apparatus and method for predicting battery capacity and fitness for service from a battery dynamic parameter and a recovery voltage differential 26 2004
7,774,151 Wireless battery monitor 28 2004
7,598,743 Battery maintenance device having databus connection 29 2005
7,034,541 Query based electronic battery tester 26 2005
7,642,786 Battery tester capable of identifying faulty battery post adapters 24 2005
7,505,856 Battery test module 28 2005
7,598,744 Scan tool for electronic battery tester 27 2005
7,772,850 Wireless battery tester with information encryption means 28 2005
7,710,119 Battery tester that calculates its own reference values 35 2005
7,398,176 Battery testers with secondary functionality 29 2006
7,295,936 Electronic battery tester with relative test output 25 2006
7,363,175 Query based electronic battery tester 23 2006
7,777,612 Theft prevention device for automotive vehicle service centers 30 2006
7,595,643 Apparatus and method for simulating a battery tester with a fixed resistance load 27 2006
7,705,602 Automotive vehicle electrical system diagnostic device 42 2006
7,425,833 Broad-band low-inductance cables for making Kelvin connections to electrochemical cells and batteries 24 2006
7,642,787 Automotive vehicle electrical system diagnostic device 28 2006
7,619,417 Battery monitoring system 28 2006
8,674,711 Method and apparatus for measuring a parameter of a vehicle electrical system 0 2006
7,706,991 Alternator tester 26 2007
7,977,914 Battery maintenance tool with probe light 3 2007
7,808,375 Battery run down indicator 36 2008
8,237,448 Battery testers with secondary functionality 4 2008
8,306,690 Battery tester for electric vehicle 12 2008
8,513,949 Electronic battery tester or charger with databus connection 4 2008
8,164,343 Method and apparatus for measuring a parameter of a vehicle electrical system 15 2008
7,728,597 Electronic battery tester with databus 27 2008
8,203,345 Storage battery and battery tester 7 2008
8,442,877 Simplification of inventory management 4 2009
8,436,619 Integrated tag reader and environment sensor 4 2009
8,344,685 System for automatically gathering battery information 12 2009
8,754,653 Electronic battery tester 0 2009
7,940,052 Electronic battery test based upon battery requirements 4 2010
8,958,998 Electronic battery tester with network communication 0 2010
8,493,022 Automotive vehicle electrical system diagnostic device 8 2010
7,924,015 Automotive vehicle battery test system 26 2010
8,738,309 Battery pack maintenance for electric vehicles 0 2010
8,872,516 Electronic battery tester mounted in a vehicle 0 2011
8,872,517 Electronic battery tester with battery age input 0 2011
9,229,062 Electronic storage battery diagnostic system 0 2011
9,201,120 Electronic battery tester for testing storage battery 0 2011
8,674,654 In-vehicle battery monitor 0 2011
8,963,550 System for automatically gathering battery information 0 2011
9,018,958 Method and apparatus for measuring a parameter of a vehicle electrical system 0 2011
9,052,366 Battery testers with secondary functionality 0 2012
8,704,483 System for automatically gathering battery information 2 2012
9,244,100 Current clamp with jaw closure detection 0 2014
 
BAXTER INTERNATIONAL INC. (1)
* 5,764,034 Battery gauge for a battery operated infusion pump 87 1996
 
Hospira, Inc. (1)
* 5,994,876 Battery capacity measurement circuit 20 1997
 
Maeda Metal Industries, Ltd. (2)
* 7,135,791 Electric tightening device 5 2005
* 2006/0113,934 Electric tightening device 3 2005
 
TEXAS INSTRUMENTS INCORPORATED (2)
* 6,832,171 Circuit and method for determining battery impedance increase with aging 89 2003
* 2004/0128,089 Circuit and method for determining battery impedance increase with aging 5 2003
 
PATENT LEATHER LLC (1)
* 6,791,341 Current derivative sensor 8 2002
 
FORD GLOBAL TECHNOLOGIES, LLC (1)
* 2010/0259,242 METHOD AND SYSTEM FOR MONITORING TEMPERATUE OF A POWER DISTRIBUTION CIRCUIT 2 2009
 
FORD GLOBAL TECHNOLOGIES, INC. (1)
6,211,653 Method and apparatus for measuring the state-of-charge of a battery 10 1999
 
CASIO COMPUTER CO., LTD. (1)
* 9,239,362 Battery-type determination apparatus, battery-type determination method, and electronic apparatus 0 2013
 
MERIDIAN WIRELESS TECHNOLOGIES, INC. (1)
* 5,570,025 Annunciator and battery supply measurement system for cellular telephones 29 1994
* Cited By Examiner