WO1992022098A1 - Process for charging interconnected battery cells, in particular battery packs - Google Patents

Process for charging interconnected battery cells, in particular battery packs Download PDF

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Publication number
WO1992022098A1
WO1992022098A1 PCT/EP1992/001207 EP9201207W WO9222098A1 WO 1992022098 A1 WO1992022098 A1 WO 1992022098A1 EP 9201207 W EP9201207 W EP 9201207W WO 9222098 A1 WO9222098 A1 WO 9222098A1
Authority
WO
WIPO (PCT)
Prior art keywords
charging
battery cells
battery
series
charged
Prior art date
Application number
PCT/EP1992/001207
Other languages
German (de)
French (fr)
Inventor
Wilhelm-Johannes Harer
Original Assignee
Enstore Forschungs-, Entwicklungs- Und Vertriebsges. M.B.H.
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 Enstore Forschungs-, Entwicklungs- Und Vertriebsges. M.B.H. filed Critical Enstore Forschungs-, Entwicklungs- Und Vertriebsges. M.B.H.
Publication of WO1992022098A1 publication Critical patent/WO1992022098A1/en

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
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • 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
    • H02J7/0024—Parallel/serial switching of connection of batteries to charge or load circuit
    • 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

  • the invention relates to a method for preferably rapidly charging rechargeable batteries, in particular battery packs, connected in series.
  • the series-connected rechargeable batteries are discharged via the two external contacts and recharged in series.
  • This relatively long charging time is particularly undesirable when using the battery pack in lap tops, portable communication devices, tools or the like.
  • a particularly serious disadvantage of such charging methods is seen in the fact that charging a battery pack only works properly if all the batteries are reasonably in order. If a battery is weaker and a battery is better, this increases the potential with several charging and discharging cycles and the entire battery pack becomes unusable. For example, the following attempt was made: With a fully charged battery pack, a battery was removed, discharged and reinserted. The battery pack was inserted and charged in a conventional charger. After 5 minutes the charger reported "battery charged”. It turned out that the previously removed, discharged and reinserted battery was not yet fully charged.
  • the invention has for its object to provide a charging process which ensures that all batteries of the battery pack are really fully charged, and in a significantly reduced charging time.
  • the method according to the invention is characterized in that the battery cells which can be discharged in series are charged in parallel. This can be done in a simple manner in that, in addition to the external contacts, the connection points between the individual cells are also brought out and connected with the two end contacts, for. B. are connected to an appropriately trained plug or contact unit.
  • the charging method according to the invention not only achieves considerably shorter charging times (eg only 1/6 of the charging time in the case of 6 batteries connected in series), but each battery cell is optimally charged. For example, bad solder contacts between the electrodes of adjacent cells result in unequal contact resistances, so that the individual battery cells are charged unequally in the known charging methods. This is avoided in the method according to the invention because each battery cell is treated individually, so that each cell receives its full capacity. In this way, the capacity of a battery pack can be increased by at least 10% and the service life can be significantly extended. This is particularly important if the battery pack is used in a lap top and if necessary - e.g. B. on a business trip - no socket is available, or only a short-term charging is available.
  • REPLACEMENT LEAF sleeve-shaped container arranged so that only their external contacts 4 and 5 are accessible.
  • the battery pack becomes one device
  • the external contacts 4 and 5 are in an electrically conductive connection with corresponding contacts of the device 6.
  • the battery pack supplies the device 6 with energy, the battery cells connected in series being discharged in series. It is common for the battery pack to be recharged using the two external contacts.
  • this battery pack is now charged in parallel.
  • the connection points a and b between the battery cells ZI and Z2 or Z2 and Z3 are tapped and together with the external contacts to form a plug contact unit
  • a voltage limiter 8 for. B. in the form of a Zener diode or the like. As the battery cells are charged in a manner known per se with a higher voltage.

Abstract

A process for charging, preferably quickly, serially interconnected, rechargeable battery cells, in particular battery packs, is characterized in that the serially dischargeably battery cells are charged in parallel. For this purpose, the links between the individual battery cells are brought out with both end contacts to a plug-in unit or the like having a matching design.

Description

Verfahren zum Laden von intern geschalteten Batterien, insbe¬ sondere Batterie-Packs Method for charging internally switched batteries, in particular battery packs
Verfahren zum Laden von in Serie geschalteten, wiederauflad¬ baren Batterien, insbesondere Batterie-Packs.Method for charging series-connected, rechargeable batteries, in particular battery packs.
Die Erfindung bezieht sich auf ein Verfahren zum vorzugsweise schnellen Laden von"' in Serie geschalteten wiederaufladbaren Batterien, insbesondere Batterie-Packs.The invention relates to a method for preferably rapidly charging rechargeable batteries, in particular battery packs, connected in series.
Bei den bekannten Ladeverfahren und -geraten werden die in Serie geschalteten wiederaufladbaren Batterien über die beiden Außenkontakte entladen und in Serie wieder geladen. Das bedingt ein Ladegerät mit entsprechend hoher Nennspannung, wobei eine verhältnismäßig lange Ladezeit (von mindestens zwei Stunden) erforderlich ist. Diese relativ lange Ladezeit ist insbeεon- dere beim Einsatz des Batterie-Packs in Lap-Tops, tragbaren Kommunikationsgeräten, Werkzeugen o. dgl. unerwünscht. Ein besonders schwerwiegender Nachteil solcher Ladeverfahren wird darin gesehen, da/3 das Aufladen eines Akku-Packs überhaupt nur dann richtig funktioniert, wenn alle Batterien einigermaßen in Ordnung sind. Wenn nämlich eine Batterie schwächer und eine Batterie besser ist, so potenziert sich dies bei mehreren Lade- und Entladezyklen und der gesamte Akku-Pack wird unbrauchbar. Es wurde beispielsweise folgender Versuch gemacht: Es wurde bei einem voll geladenen Akku-Pack eine Batterie herausgenommen, entladen und wieder eingesetzt. Der Akku-Pack wurde in ein herkömmliches Ladegerät eingesetzt und aufgeladen. Nach 5 Minuten hat das Ladegerät gemeldet "Batterie geladen". Dabei hat sich herausgestellt, daß die zuvor entnommene, entladene und wieder eingesetzte Batterie noch nicht voll geladen war.In the known charging methods and devices, the series-connected rechargeable batteries are discharged via the two external contacts and recharged in series. This requires a charger with a correspondingly high nominal voltage, which requires a relatively long charging time (at least two hours). This relatively long charging time is particularly undesirable when using the battery pack in lap tops, portable communication devices, tools or the like. A particularly serious disadvantage of such charging methods is seen in the fact that charging a battery pack only works properly if all the batteries are reasonably in order. If a battery is weaker and a battery is better, this increases the potential with several charging and discharging cycles and the entire battery pack becomes unusable. For example, the following attempt was made: With a fully charged battery pack, a battery was removed, discharged and reinserted. The battery pack was inserted and charged in a conventional charger. After 5 minutes the charger reported "battery charged". It turned out that the previously removed, discharged and reinserted battery was not yet fully charged.
ERSATZBLATT Der Erfindung liegt die Aufgabe zugrunde, ein Ladeverfahren zu schaffen, das sicherstellt, daß alle Batterien des Batterie- Packs wirklich voll geladen sind, und das in wesentlich ver¬ kürzter Ladezeit.REPLACEMENT LEAF The invention has for its object to provide a charging process which ensures that all batteries of the battery pack are really fully charged, and in a significantly reduced charging time.
Das erfindungsgemäße Verfahren ist dadurch gekennzeichnet, daß die in Serie entladbaren Batterie-Zellen parallel geladen werden. Dies kann in einfacher Weise dadurch vorgenommen werden, daß neben den Außenkontakten auch die Verbindungsstellen zwischen den einzelnen Zellen herausgeführt und mit den beiden Endkon¬ takten z. B. mit einer entsprechend ausgebildeten Steck- oder Kontaktierungseinheit verbunden sind.The method according to the invention is characterized in that the battery cells which can be discharged in series are charged in parallel. This can be done in a simple manner in that, in addition to the external contacts, the connection points between the individual cells are also brought out and connected with the two end contacts, for. B. are connected to an appropriately trained plug or contact unit.
Durch das erfindungsgemäße Ladeverfahren werden nicht nur er- heblich kürzere Ladezeiten erzielt (z. B. bei 6 hintereinander geschalteten Batterien nur 1/6 der Ladezeit) , sondern jede Batterie-Zelle wird optimal aufgeladen. Zum Beispiel entstehen bei schlechten Lötkontakten zwischen den Elektroden benachbarter Zellen ungleiche Übergangswiderstände, so daß bei den bekannten Ladeverfahren die einzelnen Batterie-Zellen ungleich geladen werden. Dies wird bei dem erfindungsgemäßen Verfahren vermieden, weil jede Batterie-Zelle individuell behandelt wird, so daß jede Zelle ihre volle Kapazität erhält. Auf diese Weise kann die Kazapität eines Batterie-Packs um mindestens 10% gesteigert und die Lebensdauer wesentlich verlängert werden. Dies ist insbesondere dann von Bedeutung, wenn der Batterie-Pack in einem Lap-Top eingesetzt ist und im Bedarfsfalle - z. B. auf einer Dienstreise - keine Steckdose zur Verfügung steht, oder nur eine kurzzeitige Lademöglichkeit vorhanden ist.The charging method according to the invention not only achieves considerably shorter charging times (eg only 1/6 of the charging time in the case of 6 batteries connected in series), but each battery cell is optimally charged. For example, bad solder contacts between the electrodes of adjacent cells result in unequal contact resistances, so that the individual battery cells are charged unequally in the known charging methods. This is avoided in the method according to the invention because each battery cell is treated individually, so that each cell receives its full capacity. In this way, the capacity of a battery pack can be increased by at least 10% and the service life can be significantly extended. This is particularly important if the battery pack is used in a lap top and if necessary - e.g. B. on a business trip - no socket is available, or only a short-term charging is available.
Anhand der Zeichnung wird das Prinzip des erfindungsgemäßen Ladeverfahrens näher veranschaulicht. Der Einfachheit halber ist ein Batterie-Pack (Akku-Pack) mit nur drei wiederauflad¬ baren Batterie-Zellen ZI bis Z3 dargestellt. Sie sind hinter- einander geschaltet und sind in üblicher Weise in einem genormtenThe principle of the charging method according to the invention is illustrated in more detail with the aid of the drawing. For the sake of simplicity, a battery pack (battery pack) with only three rechargeable battery cells ZI to Z3 is shown. They are connected in series and are in the usual way in a standardized
ERSATZBLATT hülsenförmigen Behälter angeordnet, so daß nur ihre Außenkon¬ takte 4 und 5 zugänglich sind. Wird der Akku-Pack in ein GerätREPLACEMENT LEAF sleeve-shaped container arranged so that only their external contacts 4 and 5 are accessible. The battery pack becomes one device
6 eingesetzt, so stehen die Außenkontakte 4 und 5 mit entsprech¬ enden Kontakten des Gerätes 6 in elektrisch leitender Verbin- düng. Der Akku-Pack versorgt das Gerät 6 mit Energie, wobei die in Serie geschalteten Batterie-Zellen in Serie entladen werden. Es ist üblich, daß der Akku-Pack auch über die beiden Außenkontakte wieder geladen wird.6 used, the external contacts 4 and 5 are in an electrically conductive connection with corresponding contacts of the device 6. The battery pack supplies the device 6 with energy, the battery cells connected in series being discharged in series. It is common for the battery pack to be recharged using the two external contacts.
Gemäß der Erfindung wird dieser Akku-Pack nun parallel geladen. Zu diesem Zwecke sind die Verbindungsstellen a und b zwischen den Batterie-Zellen ZI und Z2 bzw. Z2 und Z3 angezapft und gemeinsam mit den Außenkontakten zu einer SteckkontakteinheitAccording to the invention, this battery pack is now charged in parallel. For this purpose, the connection points a and b between the battery cells ZI and Z2 or Z2 and Z3 are tapped and together with the external contacts to form a plug contact unit
7 geführt, an die ein entsprechendes Ladegerät angeschlossen werden kann, um die Batterie-Zellen nun parallel zu laden.7 out, to which a corresponding charger can be connected in order to charge the battery cells in parallel.
Wenn der Batterie-Pack in elektrischer Verbindung mit dem Gerät 6 bleiben soll, muß zum Schutz dieses ein Spannungsbegrenzer 8, z. B. in Form einer Z-Diode o. dgl. vorgesehen sein, da die Batterie-Zellen in an sich bekannter Weise mit einer höheren Spannung geladen werden. If the battery pack is to remain in electrical connection with the device 6, a voltage limiter 8, for. B. in the form of a Zener diode or the like. As the battery cells are charged in a manner known per se with a higher voltage.

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1. Verfahren zum vorzugsweisen schnellen Laden von in Serie geschalteten wiederaufladbaren Batterie-Zellen, insbesondere Batterie-Packs, d a d u r c h g e k e n n z e i c h n e t , daß die in Serie entladbaren Batterie-Zellen (ZI bis Z3) parallel geladen werden.1. A method for preferably rapid charging of series-connected rechargeable battery cells, in particular battery packs, so that the series-dischargeable battery cells (ZI to Z3) are charged in parallel.
2. Verfahren nach Patentanspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß neben den Endkontakten (4 und 5) auch die Verbindungsstellen (a und b) zwischen den einzelnen Batterie-Zellen (ZI und Z2 bzw. Z2 und Z3) heraus- geführt und mit den beiden Endkontakten (4 und 5) z. B. mit einer entsprechend ausgebildeten Steck- oder Kontakteinheit o. dgl. verbunden sind.2. The method according to claim 1, characterized in that in addition to the end contacts (4 and 5) and the connection points (a and b) between the individual battery cells (ZI and Z2 or Z2 and Z3) led out and with the two end contacts (4 and 5) e.g. B. are connected to an appropriately trained plug or contact unit or the like.
ERSATZBLATT REPLACEMENT LEAF
PCT/EP1992/001207 1991-06-05 1992-05-30 Process for charging interconnected battery cells, in particular battery packs WO1992022098A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0113591A ATA113591A (en) 1991-06-05 1991-06-05 RECHARGEABLE BATTERY WITH SERIES RECHARGEABLE BATTERY CELLS, IN PARTICULAR BATTERY PACKS
ATA1135/91 1991-06-05

Publications (1)

Publication Number Publication Date
WO1992022098A1 true WO1992022098A1 (en) 1992-12-10

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Application Number Title Priority Date Filing Date
PCT/EP1992/001207 WO1992022098A1 (en) 1991-06-05 1992-05-30 Process for charging interconnected battery cells, in particular battery packs

Country Status (3)

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AT (1) ATA113591A (en)
AU (1) AU1913492A (en)
WO (1) WO1992022098A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5705912A (en) * 1993-09-17 1998-01-06 Nec Corporation Circuit for preventing overdischarge of rechargeable battery pack consisting of a plurality of rechargeable batteries
GB2349518A (en) * 1999-02-24 2000-11-01 Roderick David Brown Portable power pack with series/parallel connection of batteries
CN110534788A (en) * 2018-05-23 2019-12-03 刘宗祁 A kind of rechargeable battery

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE347760A (en) *
FR630372A (en) * 1926-12-01 1927-12-01 Variable voltage storage battery system
US2162322A (en) * 1938-04-28 1939-06-13 Tollefson Eleanora Battery attachment
GB2004140A (en) * 1977-09-08 1979-03-21 Mueller Werth B Electric vehicle battery charging apparatus and process
JPS55111078A (en) * 1979-02-20 1980-08-27 Ricoh Co Ltd Direct current power supply
JPS569971A (en) * 1979-07-06 1981-01-31 Toshiba Corp Battery charger
GB2089592A (en) * 1980-12-12 1982-06-23 Pag Power Ltd Battery arrangement
JPS58126678A (en) * 1982-01-22 1983-07-28 Hitachi Ltd Lithium battery
EP0434659A2 (en) * 1989-12-19 1991-06-26 S.E.A. Studiengesellschaft für Energiespeicher und Antriebssysteme Gesellschaft m.b.H. Method of a selective electrochemical transformation in galvanic cells such as a rechargeable battery

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE347760A (en) *
FR630372A (en) * 1926-12-01 1927-12-01 Variable voltage storage battery system
US2162322A (en) * 1938-04-28 1939-06-13 Tollefson Eleanora Battery attachment
GB2004140A (en) * 1977-09-08 1979-03-21 Mueller Werth B Electric vehicle battery charging apparatus and process
JPS55111078A (en) * 1979-02-20 1980-08-27 Ricoh Co Ltd Direct current power supply
JPS569971A (en) * 1979-07-06 1981-01-31 Toshiba Corp Battery charger
GB2089592A (en) * 1980-12-12 1982-06-23 Pag Power Ltd Battery arrangement
JPS58126678A (en) * 1982-01-22 1983-07-28 Hitachi Ltd Lithium battery
EP0434659A2 (en) * 1989-12-19 1991-06-26 S.E.A. Studiengesellschaft für Energiespeicher und Antriebssysteme Gesellschaft m.b.H. Method of a selective electrochemical transformation in galvanic cells such as a rechargeable battery

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 004, no. 162 (E-033)12. November 1980 & JP,A,55 111 078 ( RICOH CO LTD ) *
PATENT ABSTRACTS OF JAPAN vol. 005, no. 059 (E-053)22. April 1981 & JP,A,56 009 971 ( TOSHIBA CORP ) *
PATENT ABSTRACTS OF JAPAN vol. 7, no. 236 (E-205)(1381) 20. Oktober 1983 & JP,A,58 126 678 ( HITACHI SEISAKUSHO K.K. ) 28. Juli 1983 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5705912A (en) * 1993-09-17 1998-01-06 Nec Corporation Circuit for preventing overdischarge of rechargeable battery pack consisting of a plurality of rechargeable batteries
GB2282924B (en) * 1993-09-17 1998-04-15 Nec Corp Portable personal electronic equipment
US5847542A (en) * 1993-09-17 1998-12-08 Nec Corporation Circuit for preventing overdischarge of rechargeable battery pack consisting of a plurality of rechargeable batteries
GB2349518A (en) * 1999-02-24 2000-11-01 Roderick David Brown Portable power pack with series/parallel connection of batteries
CN110534788A (en) * 2018-05-23 2019-12-03 刘宗祁 A kind of rechargeable battery

Also Published As

Publication number Publication date
ATA113591A (en) 1994-09-15
AU1913492A (en) 1993-01-08

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