WO1998045924A3 - Battery protection system - Google Patents

Battery protection system Download PDF

Info

Publication number
WO1998045924A3
WO1998045924A3 PCT/US1998/005968 US9805968W WO9845924A3 WO 1998045924 A3 WO1998045924 A3 WO 1998045924A3 US 9805968 W US9805968 W US 9805968W WO 9845924 A3 WO9845924 A3 WO 9845924A3
Authority
WO
WIPO (PCT)
Prior art keywords
charging
battery
switches
battery pack
current
Prior art date
Application number
PCT/US1998/005968
Other languages
French (fr)
Other versions
WO1998045924A2 (en
Inventor
Jade Alberkrack
Troy L Stockstad
Original Assignee
Motorola Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Priority to DE69839115T priority Critical patent/DE69839115T2/en
Priority to EP98913152A priority patent/EP0972327B1/en
Priority to JP54281498A priority patent/JP3937358B2/en
Publication of WO1998045924A2 publication Critical patent/WO1998045924A2/en
Publication of WO1998045924A3 publication Critical patent/WO1998045924A3/en
Priority to HK00102933A priority patent/HK1023857A1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00306—Overdischarge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00308—Overvoltage protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00711—Regulation of charging or discharging current or voltage with introduction of pulses during the charging process

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)
  • Protection Of Static Devices (AREA)

Abstract

A battery protection system (20) controls a process for charging a battery pack (15). A hysteresis comparator (54) senses a charging current flowing through the battery pack (15) and switches off a charging switch (31) to interrupt the charging current when the charging current reaches an upper limit. A transient current is then generated by an inductor (34). The hysteresis comparator (54) senses the transient current flowing through the battery pack (15) and switches on the charging switch (31) to regenerate the charging current when the transient current decreases substantially to zero. Periodically, a battery monitoring circuit (40) switches off the charging switch (31) and measures an open circuit voltage across each battery cell in the battery pack (15). In response to the open circuit voltage of a battery cell reaching a fully charged voltage, the battery monitoring circuit (40) switches off the charging switch (31) to terminate the charging process.
PCT/US1998/005968 1997-04-07 1998-03-26 Battery protection system WO1998045924A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE69839115T DE69839115T2 (en) 1997-04-07 1998-03-26 BATTERY PROTECTION SYSTEM
EP98913152A EP0972327B1 (en) 1997-04-07 1998-03-26 Battery protection system
JP54281498A JP3937358B2 (en) 1997-04-07 1998-03-26 Battery system, battery protection system, and battery charging method
HK00102933A HK1023857A1 (en) 1997-04-07 2000-05-17 Battery protection system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/833,437 1997-04-07
US08/833,437 US5804944A (en) 1997-04-07 1997-04-07 Battery protection system and process for charging a battery

Publications (2)

Publication Number Publication Date
WO1998045924A2 WO1998045924A2 (en) 1998-10-15
WO1998045924A3 true WO1998045924A3 (en) 1998-12-23

Family

ID=25264420

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/005968 WO1998045924A2 (en) 1997-04-07 1998-03-26 Battery protection system

Country Status (9)

Country Link
US (2) US5804944A (en)
EP (1) EP0972327B1 (en)
JP (1) JP3937358B2 (en)
KR (1) KR20010006107A (en)
CN (1) CN1107367C (en)
DE (1) DE69839115T2 (en)
HK (1) HK1023857A1 (en)
TW (1) TW367629B (en)
WO (1) WO1998045924A2 (en)

Families Citing this family (90)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6034506A (en) * 1998-01-16 2000-03-07 Space Systems/Loral, Inc. Lithium ion satellite battery charge control circuit
US6208121B1 (en) * 1998-01-20 2001-03-27 Iap Research, Inc. Switching power supply with AC waveform capability
JP3305257B2 (en) * 1998-05-06 2002-07-22 セイコーインスツルメンツ株式会社 Charge / discharge control circuit, rechargeable power supply device and control method therefor
JP2000069520A (en) * 1998-08-26 2000-03-03 Matsushita Electric Ind Co Ltd Radio calling receiver
US6037750A (en) * 1998-09-17 2000-03-14 Qualcomm Incorporated Battery pack controller
US6121755A (en) * 1999-06-03 2000-09-19 Illinois Tool Works Inc. Optical-electronic battery indicator
JP3736205B2 (en) 1999-06-04 2006-01-18 三菱電機株式会社 Battery power storage device
US6392387B1 (en) * 2000-03-14 2002-05-21 Sage Electronics And Technology, Inc. Passively protected battery pack with on load charge and on load conditioning-discharge capability and charging system
JP3471321B2 (en) * 2000-05-12 2003-12-02 セイコーインスツルメンツ株式会社 Charge / discharge control circuit and rechargeable power supply
US6586913B2 (en) 2000-06-30 2003-07-01 Associated Equipment Corporation Automatic battery charger with voltage controlled charging and ripple voltage test
US6479962B2 (en) * 2001-03-16 2002-11-12 Hewlett-Packard Company In-device charging system and method for multi-chemistry battery systems
ITPD20010159A1 (en) * 2001-07-03 2003-01-03 Helvi Spa DEVICE FOR OVERVOLTAGE PROTECTION GENERATED BY ELECTROMECHANICAL SYSTEMS, PARTICULARLY FOR BATTERY CHARGERS WITH STARTING.
US6822423B2 (en) 2001-09-03 2004-11-23 Gpe International Limited Intelligent serial battery charger and charging block
TWI241762B (en) * 2001-09-03 2005-10-11 Gpe Internat Ltd An intelligent fast battery charger
US7557538B2 (en) * 2001-09-03 2009-07-07 Gpe International Limited Intelligent serial battery charger
JP4068431B2 (en) * 2001-11-19 2008-03-26 セイコーインスツル株式会社 Diode circuit and electronic device
JP3904489B2 (en) * 2002-07-04 2007-04-11 富士通株式会社 Charge control circuit, charger, power supply circuit, information processing apparatus, and battery pack
US8618805B2 (en) * 2004-03-25 2013-12-31 02Micro, Inc. Battery pack with a battery protection circuit
US7180268B2 (en) * 2004-03-25 2007-02-20 O2Micro International Limited Circuits capable of trickle precharge and/or trickle discharge
US7719283B2 (en) * 2004-06-04 2010-05-18 Yazaki Corporation Switching circuit and voltage measuring circuit
US7737580B2 (en) * 2004-08-31 2010-06-15 American Power Conversion Corporation Method and apparatus for providing uninterruptible power
US20060061922A1 (en) * 2004-09-22 2006-03-23 Cellex Power Products, Inc. Hybrid power supply system having energy storage device protection circuit
US7538519B2 (en) * 2004-11-24 2009-05-26 Dell Products L.P. Information handling system with battery protected from non-permanent failures
US20060245131A1 (en) 2005-04-29 2006-11-02 Ramey Blaine E Electrical protection circuitry for a docking station base of a hand held meter and method thereof
EP1908032A4 (en) * 2005-07-19 2011-02-02 Prec Dynamics Corp Semi-active rfid tag and related processes
CN100548274C (en) * 2006-01-12 2009-10-14 永信药品工业股份有限公司 Water type injection containing paclitaxel and preparation method thereof
JP2007306647A (en) * 2006-05-09 2007-11-22 Lenovo Singapore Pte Ltd Power supply system and electronic equipment
US7626360B2 (en) * 2006-08-11 2009-12-01 Cirrus Logic, Inc. Charge-pump biased battery protection circuit
EP1944849A3 (en) 2007-01-12 2010-06-02 Koehler-Bright Star Inc. Battery pack
US8237447B2 (en) * 2007-05-11 2012-08-07 Panasonic Ev Energy Co., Ltd. Apparatus for detecting state of storage device
JP4894646B2 (en) * 2007-06-15 2012-03-14 トヨタ自動車株式会社 Charging device and charging system
US7944182B2 (en) * 2007-08-03 2011-05-17 American Power Conversion Corporation Adjustable battery charger for UPS
TW200917622A (en) * 2007-10-12 2009-04-16 Acer Inc Battery charging method and device thereof
US7996165B2 (en) * 2008-10-07 2011-08-09 Associated Equipment Corp. Portable heavy load battery testing system and method
JP5209512B2 (en) * 2009-01-16 2013-06-12 株式会社マキタ Battery monitoring system for electric tools, battery pack for electric tools, and charger for electric tools
US20100190052A1 (en) * 2009-01-27 2010-07-29 Umesh Rajani Battery pack with high and low current discharge terminals
JP5415117B2 (en) * 2009-03-27 2014-02-12 Ｔｄｋラムダ株式会社 Cell number determination method, cell number determination device, power supply device, and program
WO2010117498A2 (en) * 2009-03-30 2010-10-14 Sendyne Corp. Battery cell protection and conditioning circuit and system
US8581554B2 (en) * 2009-07-10 2013-11-12 Schneider Electric It Corporation Battery charging method and apparatus
EP2302757B1 (en) * 2009-09-24 2020-04-29 VITO NV (Vlaamse Instelling voor Technologisch Onderzoek NV) Method and system for balancing electrical energy storage cells
US9203489B2 (en) 2010-05-05 2015-12-01 Google Technology Holdings LLC Method and precoder information feedback in multi-antenna wireless communication systems
WO2011151918A1 (en) * 2010-06-04 2011-12-08 トヨタ自動車株式会社 Secondary battery, secondary battery test device and method, and battery test system
US8715648B2 (en) 2011-02-16 2014-05-06 Pivotal Therapeutics Inc. Method for treating obesity with anti-obesity formulations and omega 3 fatty acids for the reduction of body weight in cardiovascular disease patients (CVD) and diabetics
US8952000B2 (en) 2011-02-16 2015-02-10 Pivotal Therapeutics Inc. Cholesterol absorption inhibitor and omega 3 fatty acids for the reduction of cholesterol and for the prevention or reduction of cardiovascular, cardiac and vascular events
US8864373B2 (en) * 2011-09-12 2014-10-21 National Semiconductor Corporation Small highly accurate battery temperature monitoring circuit
KR101242970B1 (en) * 2011-11-18 2013-03-15 넥스콘 테크놀러지 주식회사 Universal battery voltage measurement module
US20130293185A1 (en) * 2012-05-04 2013-11-07 Qualcomm Incorporated High current battery charging using ir dropout compensation
US9081039B2 (en) * 2012-05-17 2015-07-14 GM Global Technology Operations LLC Vehicle electrical system fault detection
US9419457B2 (en) 2012-09-04 2016-08-16 Google Technology Holdings LLC Method and device with enhanced battery capacity savings
US9831691B2 (en) * 2012-09-18 2017-11-28 Nec Energy Devices, Ltd. Power storage system and cell protection method which protects the cell by both cutting from the cell pack and the cell pack from the system
US9356461B2 (en) 2012-09-25 2016-05-31 Google Technology Holdings, LLC Methods and systems for rapid wireless charging where the low state of charge (SOC) temperature dependent charging current and low SOC temperature limit are higher than the high SOC temperature dependent charging current and high SOC temperature limit
JP5673657B2 (en) 2012-12-03 2015-02-18 トヨタ自動車株式会社 Power storage system
US9813262B2 (en) 2012-12-03 2017-11-07 Google Technology Holdings LLC Method and apparatus for selectively transmitting data using spatial diversity
JP5673658B2 (en) 2012-12-03 2015-02-18 トヨタ自動車株式会社 Power storage system
CN104823347B (en) 2012-12-03 2018-10-02 丰田自动车株式会社 Accumulating system
US9591508B2 (en) 2012-12-20 2017-03-07 Google Technology Holdings LLC Methods and apparatus for transmitting data between different peer-to-peer communication groups
US9979531B2 (en) 2013-01-03 2018-05-22 Google Technology Holdings LLC Method and apparatus for tuning a communication device for multi band operation
US9281696B2 (en) * 2013-02-27 2016-03-08 Fu-Sheng Tsai Current steering circuit and current steering method for controlling branch current flowing through branch
US10229697B2 (en) 2013-03-12 2019-03-12 Google Technology Holdings LLC Apparatus and method for beamforming to obtain voice and noise signals
US9491706B2 (en) 2013-03-13 2016-11-08 Google Technology Holdings LLC Reduced-power transmitting from a communications device
KR101458825B1 (en) * 2013-03-26 2014-11-13 주식회사 이랜텍 Battery pack using regenerative electricity generation
US9365120B2 (en) * 2013-03-29 2016-06-14 Fca Us Llc Techniques for enhanced battery pack recharging
TWI484204B (en) * 2013-04-12 2015-05-11 Nat Chung Shan Inst Of Science & Technology A method of detecting lithium batteries
CN103199504B (en) * 2013-04-18 2015-09-09 无锡中星微电子有限公司 A kind of battery protecting circuit with booster circuit
DE102013007704B4 (en) 2013-05-03 2023-06-01 Volkswagen Aktiengesellschaft Battery protection by means of an active current sensor
US9360530B2 (en) * 2013-08-19 2016-06-07 Google Technology Holdings LLC Method and system for energy storage capacity estimation of battery cells
US9386542B2 (en) 2013-09-19 2016-07-05 Google Technology Holdings, LLC Method and apparatus for estimating transmit power of a wireless device
KR102094474B1 (en) 2013-10-15 2020-03-30 삼성전자주식회사 Auxiliary power supply device and an electronic system employing the same
KR101854218B1 (en) 2013-10-22 2018-05-03 삼성에스디아이 주식회사 Battery pack, energy storage system, and method of charging the battery pack
US9596653B2 (en) 2013-12-16 2017-03-14 Google Technology Holdings LLC Remedying power drain via a coverage map
US9549290B2 (en) 2013-12-19 2017-01-17 Google Technology Holdings LLC Method and apparatus for determining direction information for a wireless device
US9491007B2 (en) 2014-04-28 2016-11-08 Google Technology Holdings LLC Apparatus and method for antenna matching
US9865897B2 (en) 2014-06-02 2018-01-09 Google Llc Stacked electrochemical cell with increased energy density
US9478847B2 (en) 2014-06-02 2016-10-25 Google Technology Holdings LLC Antenna system and method of assembly for a wearable electronic device
WO2016004079A1 (en) * 2014-06-30 2016-01-07 Black & Decker Inc. Battery pack for a cordless power tools
US9438293B2 (en) 2014-08-05 2016-09-06 Google Technology Holdings LLC Tunable circuit elements for dynamic, per element power
US9472965B2 (en) 2014-09-08 2016-10-18 Google Technology Holdings LLC Battery cycle life through smart overnight charging
US10790679B2 (en) * 2014-09-26 2020-09-29 Mitsumi Electric Co., Ltd. Battery protection circuit and device, battery pack, and battery protection method
KR102284481B1 (en) 2014-11-27 2021-08-02 삼성에스디아이 주식회사 Battery pack
US10114060B2 (en) * 2015-02-16 2018-10-30 Continental Automotive Systems, Inc. Negative battery main contactor status determination
CN105186462B (en) * 2015-11-02 2018-04-20 中颖电子股份有限公司 Battery protection system
US9876369B2 (en) * 2016-03-15 2018-01-23 Lg Chem, Ltd. Battery system and method for determining an open circuit fault condition in a battery module
US10797357B2 (en) 2016-10-21 2020-10-06 Advanced Bionics Ag Systems and methods for extending a shelf life of a rechargeable battery assembly
EP3352322B1 (en) * 2017-01-24 2019-01-02 Samsung SDI Co., Ltd. Control unit for a battery system
JP6863258B2 (en) * 2017-12-12 2021-04-21 トヨタ自動車株式会社 Stress estimation method for secondary battery system and active material of secondary battery
EP3648286A1 (en) * 2018-10-30 2020-05-06 Samsung SDI Co., Ltd. A battery system
US11431178B2 (en) * 2018-10-30 2022-08-30 Samsung Sdi Co., Ltd. Battery system
JP6912744B1 (en) 2020-08-28 2021-08-04 ミツミ電機株式会社 Control system, control method and secondary battery protection integrated circuit
KR20230141330A (en) 2022-03-31 2023-10-10 주식회사 이스퀘어 Battery charge/discharge state monitoring techniques and implementation methods for increasing battery safety
KR20230142078A (en) 2022-03-31 2023-10-11 주식회사 이스퀘어 Multilayer control techniques and Implementation methods for battery system protection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3533437A1 (en) * 1985-09-19 1987-03-26 Telefunken Electronic Gmbh Protection electronics for accumulators
EP0588613A2 (en) * 1992-09-17 1994-03-23 Sony Corporation Battery protection circuits
EP0665628A2 (en) * 1994-02-01 1995-08-02 Sun Microsystems, Inc. Smart battery system and interface
EP0762593A2 (en) * 1995-08-25 1997-03-12 Rayovac Corporation Battery management circuit and method for controlling the in-circuit charge and discharge of series-connected rechargeable electrochemical cells

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614581A (en) * 1970-02-10 1971-10-19 Emerson L Frost Power conversion system
US4109192A (en) * 1976-06-25 1978-08-22 Hughes Aircraft Company Low power reactive drive circuit for capacitive loads
NZ188610A (en) * 1977-11-04 1982-08-17 Minitronics Pty Ltd Current integrating battery charger circuit
US4791350A (en) * 1984-12-04 1988-12-13 Square D Company Current regulated switching regulator for gating gate turnoff devices
US4647834A (en) * 1984-12-17 1987-03-03 Castleman Cordell V Battery charger
SE465053B (en) * 1988-11-25 1991-07-15 Folke Bertil Mattsson METHOD AND DEVICE FOR FAST CHARGING OF ACCUMULATOR BATTERIES
US5349282A (en) * 1990-12-11 1994-09-20 Span, Inc. Battery charging and monitoring system
US5289103A (en) * 1991-12-13 1994-02-22 Tekonsha Engineering Company Battery charger for towed vehicle
US5610495A (en) * 1994-06-20 1997-03-11 Motorola, Inc. Circuit and method of monitoring battery cells
US5648714A (en) * 1994-11-30 1997-07-15 3266991 Manitoba Ltd. Method and device for charging and conditioning batteries
CA2169706A1 (en) * 1995-03-03 1996-09-04 Troy Lynn Stockstad Circuit and method for battery charge control
US5656957A (en) * 1995-10-19 1997-08-12 Sgs-Thomson Microelectronics, Inc. Comparator circuit with hysteresis
US5783930A (en) * 1996-02-16 1998-07-21 Black & Decker Inc. Self-oscillating buck mode battery charger
US5714863A (en) * 1996-02-20 1998-02-03 Motorola, Inc. Circuit for enhancing power delivery of an energy source

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3533437A1 (en) * 1985-09-19 1987-03-26 Telefunken Electronic Gmbh Protection electronics for accumulators
EP0588613A2 (en) * 1992-09-17 1994-03-23 Sony Corporation Battery protection circuits
EP0665628A2 (en) * 1994-02-01 1995-08-02 Sun Microsystems, Inc. Smart battery system and interface
EP0762593A2 (en) * 1995-08-25 1997-03-12 Rayovac Corporation Battery management circuit and method for controlling the in-circuit charge and discharge of series-connected rechargeable electrochemical cells

Also Published As

Publication number Publication date
WO1998045924A2 (en) 1998-10-15
DE69839115D1 (en) 2008-03-27
EP0972327B1 (en) 2008-02-13
KR20010006107A (en) 2001-01-26
EP0972327A2 (en) 2000-01-19
TW367629B (en) 1999-08-21
CN1107367C (en) 2003-04-30
JP2001524300A (en) 2001-11-27
DE69839115T2 (en) 2009-02-05
HK1023857A1 (en) 2000-09-22
US5804944A (en) 1998-09-08
US5920181A (en) 1999-07-06
CN1251694A (en) 2000-04-26
JP3937358B2 (en) 2007-06-27

Similar Documents

Publication Publication Date Title
WO1998045924A3 (en) Battery protection system
MY118357A (en) Constant current and constant voltage battery charger
CA2188360A1 (en) Apparatus and method for discharging and charging a multiple battery arrangement
CA2310357A1 (en) Battery accumulating apparatus
EP0319020A3 (en) Over-discharge protection circuit
TW351863B (en) Automatic detector for battery source
MX9705594A (en) Apparatus and method for identifying the type and band of a battery for a portable device.
MY116704A (en) Battery charger with low standby current
CA2103156A1 (en) Quick charger and quick charge method of nickel-cadmium battery
KR940008189A (en) Battery protection circuit
MY126354A (en) Charging apparatus
MY111943A (en) Apparatus and method for charging
CN108448713A (en) A kind of intelligence energy storage type emergency power system
MY111975A (en) Battery charging system.
JPH06276696A (en) Over-discharge protective circuit of secondary battery
EP0340794A3 (en) Portable apparatus with variable rating battery charger for recharging interchangeable battery packs
WO1998053335A3 (en) Condition monitoring system for batteries
EP0126936A3 (en) High frequency switching battery charger
CN115528778A (en) Direct-current power supply system with parallel structure and control circuit thereof
JPS56134477A (en) Charge and discharge circuit for storage battery
JPS6485539A (en) Back-up power circuit
CN214045135U (en) Three-phase UPS charging control circuit with central line
KR100252806B1 (en) Protecting circuit of lithium ion battery
CN211684667U (en) Lithium battery charging safety protection circuit
JPH0382345A (en) Battery charging device

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 98803837.4

Country of ref document: CN

AK Designated states

Kind code of ref document: A2

Designated state(s): CN DE DE GB JP KR

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): CN DE DE GB JP KR

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 1998 542814

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1019997009185

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 1998913152

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1998913152

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1019997009185

Country of ref document: KR

WWW Wipo information: withdrawn in national office

Ref document number: 1019997009185

Country of ref document: KR

WWG Wipo information: grant in national office

Ref document number: 1998913152

Country of ref document: EP