WO1999000863A2 - Systeme de charge d'accumulateur comprenant un circuit de bloquage - Google Patents

Systeme de charge d'accumulateur comprenant un circuit de bloquage Download PDF

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Publication number
WO1999000863A2
WO1999000863A2 PCT/US1998/013036 US9813036W WO9900863A2 WO 1999000863 A2 WO1999000863 A2 WO 1999000863A2 US 9813036 W US9813036 W US 9813036W WO 9900863 A2 WO9900863 A2 WO 9900863A2
Authority
WO
WIPO (PCT)
Prior art keywords
battery
charging system
memory
battery charging
charger
Prior art date
Application number
PCT/US1998/013036
Other languages
English (en)
Other versions
WO1999000863A3 (fr
Inventor
David M. Demuro
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 AU81621/98A priority Critical patent/AU8162198A/en
Publication of WO1999000863A2 publication Critical patent/WO1999000863A2/fr
Publication of WO1999000863A3 publication Critical patent/WO1999000863A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00036—Charger exchanging data with battery
    • 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
    • H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4221—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells with battery type recognition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This invention relates in general to batteries and chargers, and more specifically to batteries and chargers that include safety circuitry.
  • Rechargeable, or secondary batteries are manufactured using many different technologies.
  • such batteries include nickel metal hydride batteries, nickel cadmium batteries, and lithium ion batteries, to name a few.
  • Lithium ion batteries require special charging methods that control cell voltage within certain safe limits. Exceeding the voltage limits of the cell can create a safety hazard since overcharging can result in fire or explosion.
  • lithium ion batteries are preferred in many applications due to their high energy densities and low weights.
  • Lithium ion cells are typically packaged in protective housings that usually contain safety circuitry for monitoring cell voltage, preventing overcharging of the cells, and limiting cell discharge below voltages that could damage the cells or diminish battery performance.
  • chargers specifically designed to charge lithium ion batteries are also equipped with safety circuitry to designed to safely charge lithium ion batteries.
  • the charger and battery circuits are usually enclosed within the housing and not visible to the user, the user could inadvertently charge a lithium ion battery with an incorrect charger or with a charger that does not include the appropriate safety circuits.
  • the user could attempt to charge a lithium ion battery that lacks safety circuit.
  • FIG. 1 is an electrical schematic diagram of lock-out circuitry for use in a lithium ion battery and a charger in accordance with the present invention. Detailed Description of the Preferred Embodiment
  • FIG. 1 illustrates a lithium ion battery 100, a charger 200, and a power source 300, such as a conventional alternating current (A/C) outlet.
  • the battery 100 includes a cell arrangement comprising at least one lithium ion cell 104 that is protected, in a conventional manner, from overcharge by a switch, such as a field effect transistor or other type of transistor 102, under the control of an integrated circuit (IC) 107 designed to continuously monitor cell voltage.
  • IC integrated circuit
  • Another switch preferably a field effect transistor 103, also protects the cell from overdischarge under control of the IC 107, hereinafter referred to as the protection IC 107.
  • the protection IC 107 can, for instance, be implemented using an application specific integrated circuit (ASIC), such as model number S-8231 manufactured by Seiko.
  • ASIC application specific integrated circuit
  • the battery 100 also includes a memory 101, such as an erasable programmable read only memory (EPROM), that contains stored information unique to the particular battery 100.
  • EPROM erasable programmable read only memory
  • the memory 101 could store charge instructions, capacity information, maximum and minimum voltage values, etc.
  • the charger 200 can be coupled to the battery 100 via four battery terminals 109, 110, 111, 112 located on the outside of the battery 100 and four charger terminals 209, 210, 211, 212 located on the outside of the charger 200.
  • Terminal 111 and terminal 211 couple the memory 101 of the battery 100 to a microprocessor 201 included in the charger 200.
  • Terminal 110 and terminal 210 couple a thermistor 108 of the battery 100 to the microprocessor 201 for purposes of monitoring the temperature within the battery 100 in a conventional manner.
  • Terminal 109, terminal 112, terminal 209, and terminal 212 provide a charging current from a regulator 202 within the charger 200 to the cell or cells 104 in accordance with instructions from the microprocessor 201.
  • the memory 101 which can be implemented using a model number DS2502 EPROM made by Dallas
  • Semiconductor includes a latched output port 113 which is coupled to the gate of the overcharge protection transistor 102 so that the transistor 102 is also controlled by the memory 101.
  • the latched output port 113 of the memory 101 is configured to be in a low voltage state under conditions when the battery 100 is removed from electrical contact with a host device (not shown) or with the charger 200.
  • the low voltage at the gate of the transistor 102 turns off the transistor 102, thereby preventing charging of the cells 104 via the external terminals 109, 112 of the battery 100.
  • the overcharge protection transistor 102 is also coupled to terminal 112 at its source.
  • the drain of the transistor 102 is coupled to the drain of the overdischarge protection transistor 103.
  • the gate of the transistor 103 is connected to a "DO" port of the protection IC 107, and the source of the transistor 103 is connected to a ground voltage provided by the cells 104.
  • the battery 100 includes various other conventional circuit elements, such as capacitors 302-310, resistors 320-326, and zener diodes 330, 332, all of which operate to perform conventional functions in known ways.
  • the microprocessor 201 Upon insertion of the battery 100 into the charger 200, the microprocessor 201 reads the stored information in the memory 101.
  • This stored information preferably contains unique information, such as a bit pattern or value, indicating to the charger 200 that the battery 100 is "authentic” in the sense that it contains the necessary safety circuitry for safe charging of the lithium cell or cells 104.
  • the microprocessor 201 commands the memory 101 to toggle the voltage on the port 113 from a first voltage, e.g., a low state, to a second voltage, e.g., a high state, thereby closing the transistor 102 to enable charging of the cells 104.
  • the microprocessor 201 can, for example, instruct the memory 101 to close the transistor 102 by providing a particular signal, such as a predetermined voltage, at terminal 211.
  • This operation provides a bi-directional lockout function that disables charging of the battery 100 in an unauthorized charger and that also disables charging by the charger 200 of an unauthorized battery, such as occurs when a battery does not include a memory or when a battery memory does not include the proper authorization code.
  • a host device (not shown) can command the memory 101 to toggle the output port 113 to a high state, thereby closing the transistor 102 to enable charging and discharging of the cell 104 via external contacts 402, 404, 406, 408.
  • An advantage of the present invention is that bi-directional lock-out circuitry, e.g., the transistor 102, the transistor 103, and the memory 101 in combination with the microprocessor 201, prevents the cell 104 from being overcharged by opening the transistor 102 to prevent current flow when the charger 200 fails to switch the port 113 of the memory 101 to a high state. This can occur either when the charger 200 does not include the appropriate hardware or software, such as in the microprocessor 201, to read and respond to stored battery information or when the battery 100 does not store the proper authentication code or lacks the memory 101. As a result, the user is doubly protected by the bi-directional lockout feature that prevents both the charging of an unsafe lithium battery and the charging of a safe lithium ion battery by an unsafe charger.
  • the bi-directional lockout system requires safety circuitry to be included in both the battery and the charger so that safety concerns with respect to lithium batteries are minimized.
  • the battery includes a memory that stores an authentication code indicating to the charger that appropriate safety circuitry is included in the battery.
  • a switch is coupled to and controlled by a latched port of the memory, and defaults to an open circuit condition so that the cells of the battery cannot be charged or discharged.
  • a properly programmed microprocessor within the charger reads the memory to determine whether the correct authentication code is stored. Only when this code is detected does the charger instruct the memory to close the switch so that current can be provided to charge the cells of the battery. In this way, the charger and battery function together to provide redundant safety features.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

Un système de charge d'accumulateur comportant un circuit de bloquage bidirectionnel comprend un accumulateur (100) qui conserve en mémoire un code d'authentification et qui inclut des cellules (104) produisant une tension au niveau de bornes externes (109, 112). Un chargeur (200) donne à l'accumulateur (100) l'ordre de connecter les cellules (104) aux bornes extérieures (109, 112) en réponse à la vérification du code d'authentification.
PCT/US1998/013036 1997-06-27 1998-06-22 Systeme de charge d'accumulateur comprenant un circuit de bloquage WO1999000863A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU81621/98A AU8162198A (en) 1997-06-27 1998-06-22 Battery charging system having lock-out circuitry

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88393597A 1997-06-27 1997-06-27
US08/883,935 1997-06-27

Publications (2)

Publication Number Publication Date
WO1999000863A2 true WO1999000863A2 (fr) 1999-01-07
WO1999000863A3 WO1999000863A3 (fr) 1999-03-25

Family

ID=25383620

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/013036 WO1999000863A2 (fr) 1997-06-27 1998-06-22 Systeme de charge d'accumulateur comprenant un circuit de bloquage

Country Status (2)

Country Link
AU (1) AU8162198A (fr)
WO (1) WO1999000863A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001095454A1 (fr) * 2000-06-09 2001-12-13 Two Way Radio Systems Ltd Chargeur/analyseur d'accumulateurs electriques
FR2844665A1 (fr) * 2002-09-12 2004-03-19 France Telecom Dispositif electronique mobile a authentification de son environnement de fonctionnement
EP1667306A1 (fr) * 2004-12-02 2006-06-07 Sony Corporation Bloc batterie, procédé de commande de charge et dispositif d'application
WO2007143299A1 (fr) * 2006-05-30 2007-12-13 Symbol Technologies, Inc. Système et procédé d'authentification d'une batterie
US7949872B2 (en) * 2004-11-26 2011-05-24 Sony Computer Entertainment Inc. Battery and authentication requesting device
WO2015130460A1 (fr) * 2014-02-25 2015-09-03 Motorola Solutions, Inc. Procédé et appareil pour commander l'accès à une ou plusieurs mémoires dans une batterie rechargeable
US9486636B2 (en) 2009-02-20 2016-11-08 Comptolife, Llc Adaptation of the common notebook, laptop computer, netbook and tablet computer to enable each to be used as an automated external defibrillator (AED) to treat victims of sudden cardiac arrest
US9517354B2 (en) 2009-02-20 2016-12-13 Comptolife, Llc Pocket kits and methods for retrofitting and adapting common notebook computers, laptop computers, and tablet computers, to enable each to be used as an automated external defibrillator (AED), and as a manual defibrillator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5518832A (en) * 1995-01-09 1996-05-21 Motorola, Inc. Apparatus for simulating high battery temperature used in recharging lithium ion cells
US5534765A (en) * 1993-03-05 1996-07-09 Motorola, Inc. Battery with memory for storing charge procedure
US5608306A (en) * 1994-03-15 1997-03-04 Ericsson Inc. Rechargeable battery pack with identification circuit, real time clock and authentication capability

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5534765A (en) * 1993-03-05 1996-07-09 Motorola, Inc. Battery with memory for storing charge procedure
US5608306A (en) * 1994-03-15 1997-03-04 Ericsson Inc. Rechargeable battery pack with identification circuit, real time clock and authentication capability
US5518832A (en) * 1995-01-09 1996-05-21 Motorola, Inc. Apparatus for simulating high battery temperature used in recharging lithium ion cells

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001095454A1 (fr) * 2000-06-09 2001-12-13 Two Way Radio Systems Ltd Chargeur/analyseur d'accumulateurs electriques
FR2844665A1 (fr) * 2002-09-12 2004-03-19 France Telecom Dispositif electronique mobile a authentification de son environnement de fonctionnement
WO2004025984A1 (fr) * 2002-09-12 2004-03-25 France Telecom Dispositif electronique mobile a authentification de son environnement de fonctionnement
US7949872B2 (en) * 2004-11-26 2011-05-24 Sony Computer Entertainment Inc. Battery and authentication requesting device
US7619386B2 (en) 2004-12-02 2009-11-17 Sony Corporation Battery pack, charging control method, and application device
EP1667306A1 (fr) * 2004-12-02 2006-06-07 Sony Corporation Bloc batterie, procédé de commande de charge et dispositif d'application
AU2005234741B2 (en) * 2004-12-02 2007-02-22 Sony Computer Entertainment Inc. Battery pack, charging control method, and application device
US7498766B2 (en) 2006-05-30 2009-03-03 Symbol Technologies, Inc. System and method for authenticating a battery
WO2007143299A1 (fr) * 2006-05-30 2007-12-13 Symbol Technologies, Inc. Système et procédé d'authentification d'une batterie
US9486636B2 (en) 2009-02-20 2016-11-08 Comptolife, Llc Adaptation of the common notebook, laptop computer, netbook and tablet computer to enable each to be used as an automated external defibrillator (AED) to treat victims of sudden cardiac arrest
US9517354B2 (en) 2009-02-20 2016-12-13 Comptolife, Llc Pocket kits and methods for retrofitting and adapting common notebook computers, laptop computers, and tablet computers, to enable each to be used as an automated external defibrillator (AED), and as a manual defibrillator
US9789326B2 (en) 2009-02-20 2017-10-17 Comptolife, Llc Defibrillation system
WO2015130460A1 (fr) * 2014-02-25 2015-09-03 Motorola Solutions, Inc. Procédé et appareil pour commander l'accès à une ou plusieurs mémoires dans une batterie rechargeable
AU2015223446B2 (en) * 2014-02-25 2017-04-27 Motorola Solutions, Inc. A method and apparatus for controlling access to one or more memories in a rechargeable battery
US9882248B2 (en) 2014-02-25 2018-01-30 Motorola Solutions, Inc. Method and apparatus for controlling access to one or more memories in a rechargeable battery

Also Published As

Publication number Publication date
AU8162198A (en) 1999-01-19
WO1999000863A3 (fr) 1999-03-25

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