EP2572429A2 - Équilibrage de batterie à faible complexité de montage - Google Patents

Équilibrage de batterie à faible complexité de montage

Info

Publication number
EP2572429A2
EP2572429A2 EP11721015A EP11721015A EP2572429A2 EP 2572429 A2 EP2572429 A2 EP 2572429A2 EP 11721015 A EP11721015 A EP 11721015A EP 11721015 A EP11721015 A EP 11721015A EP 2572429 A2 EP2572429 A2 EP 2572429A2
Authority
EP
European Patent Office
Prior art keywords
battery
terminal
switches
discharge line
battery cells
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP11721015A
Other languages
German (de)
English (en)
Inventor
Werner Schiemann
Stefan Butzmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Samsung SDI Co Ltd
Original Assignee
Robert Bosch GmbH
SB LiMotive Germany GmbH
SB LiMotive Co Ltd
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 Robert Bosch GmbH, SB LiMotive Germany GmbH, SB LiMotive Co Ltd filed Critical Robert Bosch GmbH
Publication of EP2572429A2 publication Critical patent/EP2572429A2/fr
Withdrawn legal-status Critical Current

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
    • B60L58/22—Balancing the charge of battery modules
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P31/00—Arrangements for regulating or controlling electric motors not provided for in groups H02P1/00 - H02P5/00, H02P7/00 or H02P21/00 - H02P29/00
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the present invention relates to a circuit for a battery, which enables cell balancing with reduced circuit complexity.
  • the invention also relates to a battery with such a circuit and a motor vehicle with an electric drive motor and such a battery.
  • the battery cells Due to chemical processes during the charging and discharging processes of the battery, the battery cells age. For example, a battery cell ages due to minimal deviations in dimensioning or chemical
  • FIG. 1 shows a conventional battery which enables such cell balancing.
  • the n battery cells 10-1 to 10-n can be connected in parallel via a respective switch 20-1 to 20-n, a resistor 30-1 to 30-n to selectively discharge any battery cell by a desired amount.
  • FIGS. 2 and 6 of US 2007/0090799 A1 show switch configurations which, however, have a disadvantageously high cost of 2 * n and more switches. Disclosure of the invention
  • a circuit for a battery which has a number n of battery cells connected in series between a positive battery terminal and a negative battery terminal.
  • the number n is a natural number greater than 1.
  • Battery cells results in a number of (n-1) connection points between the n battery cells.
  • the circuit comprises a discharge element which has a first connection connected or connectable to a first discharge line and a second connection connected or connectable to a second discharge line.
  • the circuit has a number of (n + 1) switches which can be connected at a first connection to one of the (n-1) connection points or one of positive and negative battery terminals and connected to one of the first or second discharge lines at a second connection are. In this way, a positive pole of a respective battery cell via one of the switches with a respective selected one of the first or the second discharge line and a negative pole of the respective battery cell via one of the switches with a remaining one of the first or the second discharge line connectable.
  • the circuit of the invention may be combined with battery cells and batteries
  • the circuit of the invention has the advantage that a single discharge for the targeted discharge of any battery cell can be used in the context of cell balancing, without the need for this the high cost of switches of the prior art must be operated.
  • the circuit operates with n series-connected battery cells with only n + 1 switches and still allows to use a single discharge for discharging any selectable battery cell of the series-connected battery cells and optional to connect to the positive and negative pole of the battery cell.
  • the circuit can have a control unit connected on the input side to a voltage measuring unit and on the output side to control inputs of the switches.
  • the voltage measuring unit is connected to each of the battery cells and formed, a cell voltage one with the
  • Voltage measuring unit connected battery cell to determine and output to the control unit.
  • the control unit is designed, a
  • Battery cell with a maximum cell voltage to determine the cell voltages of the battery cells and the battery cell with the maximum
  • the control unit can advantageously use any known methods for cell balancing.
  • a battery cell is determined with a maximum cell voltage and for a certain period of time
  • the number n of the battery cells may be an even number. Then, each n / 2 + 1 switches have a second connected to the first discharge line
  • Terminal and n / 2 switches on a second terminal connected to the second discharge line.
  • the number n of the battery cells may be an odd number.
  • each (n + 1) / 2 switch has one with the first discharge line connected second terminal and (n + 1) / 2 switch connected to the second discharge line second terminal.
  • the discharge element may be a resistive element.
  • a resistive element converts the current of the discharged battery cell into heat, so that the associated amount of energy can no longer be used for the actual purpose of the battery.
  • inductive discharge elements which can transfer charge from one battery cell to another, there is better electromagnetic compatibility.
  • the battery cells are particularly preferably lithium-ion battery cells.
  • Lithium-ion battery cells have a high cell voltage and a high ratio of stored energy to claimed volume.
  • Another aspect of the invention relates to a motor vehicle with a
  • the electric drive motor for driving the motor vehicle and connected to the electric drive motor or connectable battery according to the second aspect of the invention.
  • the battery is not limited to such use, but may be used in other electrical systems.
  • FIG. 2 shows a first exemplary embodiment of the invention
  • Figure 3 shows a second embodiment of the invention with an even number of battery cells
  • Figure 4 shows a third embodiment of the invention with an odd number of battery cells.
  • FIG 2 shows a first embodiment of the invention.
  • a number of n battery cells 10-1 to 10-n are connected in series between a positive battery terminal 12 and a negative battery terminal 13, whereby (n-1)
  • the battery cells do not necessarily constitute a part of the invention itself, rather the invention is embodied in its circuitry. Even if in the following a battery with battery cells is mentioned, only the circuit may be meant, which is connected to the battery cells or to connect and provides the function of the cell balancing advantageous. This circuit can be a trade item in its own right and can only be connected to battery cells at a later time.
  • Battery cells 10-1 to 10-n only (n + 1) switches 20-1 to 20-n + 1 necessary to a designed in the example as an ohmic resistor discharge element 30 with any of the n battery cells 10-1 to 10-n to connect.
  • the switches 20-1 to 20-n + 1 are input side with a respectively assigned
  • the switches 20-1 to 20-n + 1 are alternately connected according to their sequence to a first discharge line 14-1 and a second discharge line 14-2, which in turn are connected to respective terminals of the discharge element 30.
  • a battery cell 10-m where 0 ⁇ m ⁇ n, can be connected to the discharge element 30 by closing the switches 20-m and 20-m + 1 and opening the remaining switches.
  • the switch 20-m can connect a positive pole or a negative pole of a battery cell to the discharge line 14-1 or 14-2 assigned to the switch 20-m, so that, depending on which battery cell 10-1 to 10 -n is to be discharged, from the perspective of the discharge element 30 different
  • Figure 3 shows a second embodiment of the invention with a straight
  • the illustrated example shows four battery cells 10-1 to 10-4, wherein due to the series connection of the battery cells 10-1 to 10-4 three connection points 1 1 -1 to 1 1 -3 result. According to the invention, five switches 20-1 to 20-5 suffice to connect each of the four battery cells 10-1 to 10-4 to the discharge element 30. The odd number of switches
  • the 20-1 to 20-5 is divided into two sets Si and S 2 each of three and two switches, Si the switches 20-1, 20-3 and 20-5 and S 2, the switches 20-2 and 20- 4 include.
  • the embodiment shown can have any even number of battery cells, wherein the resulting odd number of switches basically in two sets Si and S 2 of
  • Figure 4 shows a third embodiment of the invention with an odd number of battery cells. Because of the odd number (in the example shown five) of battery cells 10-1 to 10-5 results in an even number (six in the example shown) required by the invention switches 20-1 to 20-6.
  • the switches are divided into two sets Si and S 2 , each containing the same number of switches.
  • the number of battery cells may be any odd number. Be at an odd number n of battery cells the
  • Numbered switches 20-1 to 20-n + 1 according to their order from the positive battery terminal 12 to the negative battery terminal 13 are the odd numbered switches 20-1, 20-3, 20-n with the first discharge line 14-1 and even numbered ones Switch 20-2, 20-4, 20-n + 1 connected to the second discharge line 14-2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention concerne un montage destiné à une batterie comprenant un nombre n de piles de batterie (10-1,..., 10-n) montées en série entre une borne de batterie positive (12) et une borne de batterie négative (13). Le nombre n est un nombre naturel supérieur à 1. Le montage en série des n piles de batterie (10-1,..., 10-n) permet d'obtenir un nombre (n-1) de points de connexion (11 -1,..., 11 -n-1 ) entre les n piles de batterie (10-1,..., 10-n). Le montage comprend un élément de décharge (30) qui présente une première connexion qui est reliée ou peut être reliée à une première ligne de décharge (14-1) et une seconde connexion qui est reliée ou peut être reliée à une seconde ligne de décharge (14-2). Selon l'invention, le montage présente un nombre (n+1) de commutateurs (20-1,..., 20-n+1 ) qui peuvent être reliés au niveau d'une première connexion respectivement à l'un des (n-1) points de connexion ou à la borne de batterie positive ou négative (12; 13) ou sont reliés au niveau d'une seconde connexion à la première ou la seconde ligne de décharge (14-1; 14-2). De cette manière, un pôle positif d'une pile de batterie (10-1,..., 10-n) respective peut être relié par l'un des commutateurs (20-1,..., 20-n+1 ) respectivement au choix à la première ou la seconde ligne de décharge (14-1; 14-2) et un pôle négatif de la pile de batterie (10-1,..., 10-n) respective peut être relié par l'un des commutateurs (20-1,..., 20-n+1) à l'autre ligne de décharge (14-1; 14-2). L'invention concerne également une batterie comprenant un tel montage.
EP11721015A 2010-05-17 2011-05-11 Équilibrage de batterie à faible complexité de montage Withdrawn EP2572429A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010029013A DE102010029013A1 (de) 2010-05-17 2010-05-17 Batterie-Balancing mit reduziertem Schaltungsaufwand
PCT/EP2011/057580 WO2011144508A2 (fr) 2010-05-17 2011-05-11 Équilibrage de batterie à faible complexité de montage

Publications (1)

Publication Number Publication Date
EP2572429A2 true EP2572429A2 (fr) 2013-03-27

Family

ID=44626562

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11721015A Withdrawn EP2572429A2 (fr) 2010-05-17 2011-05-11 Équilibrage de batterie à faible complexité de montage

Country Status (5)

Country Link
US (1) US20140145651A1 (fr)
EP (1) EP2572429A2 (fr)
CN (1) CN102971932A (fr)
DE (1) DE102010029013A1 (fr)
WO (1) WO2011144508A2 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170237269A1 (en) * 2015-09-30 2017-08-17 Changs Ascending Enterprise Co., Ltd. Battery charge-discharge balancing circuit assembly
WO2017194790A1 (fr) 2016-05-13 2017-11-16 Vito Nv Procédé et appareil d'un système de gestion modulaire d'accumulateurs d'énergie
EP4094978A1 (fr) * 2016-12-12 2022-11-30 Honeywell International Inc. Équilibrage adaptatif pour gestion de batteries
WO2018235457A1 (fr) * 2017-06-21 2018-12-27 日立オートモティブシステムズ株式会社 Dispositif de surveillance de système de batterie et bloc-batterie
KR102236384B1 (ko) 2017-10-27 2021-04-05 주식회사 엘지화학 배터리 밸런싱을 위한 장치 및 그것을 포함하는 배터리팩
DE102019217303A1 (de) * 2019-11-08 2021-05-12 Robert Bosch Gmbh Verfahren zum Betreiben eines Batteriemoduls, Batteriemodul für ein Kraftfahrzeug und Kraftfahrzeug
KR20220100466A (ko) 2021-01-08 2022-07-15 주식회사 엘지에너지솔루션 배터리 관리 장치 및 그것의 동작 방법
CN116278748A (zh) * 2023-03-29 2023-06-23 上汽通用五菱汽车股份有限公司 一种供电系统电路和电动汽车

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3567512B2 (ja) * 1994-10-11 2004-09-22 ソニー株式会社 バッテリー保護回路
JP4092580B2 (ja) * 2004-04-30 2008-05-28 新神戸電機株式会社 多直列電池制御システム
JP2005318751A (ja) * 2004-04-30 2005-11-10 Shin Kobe Electric Mach Co Ltd 多直列電池制御システム
US20070001651A1 (en) * 2004-07-02 2007-01-04 Harvey Troy A Distributed networks of electric double layer capacitor supervisory controllers and networks thereof
KR100831160B1 (ko) 2005-04-15 2008-05-20 주식회사 엘지화학 배터리 셀의 밸런싱을 위한 스위칭 회로
JP4374351B2 (ja) * 2006-04-12 2009-12-02 矢崎総業株式会社 充電状態調整装置
DE102007023023A1 (de) * 2007-05-16 2008-11-27 Siemens Ag Schaltungsanordnung und Verfahren zum Betreiben einer Energiespeicheranordnung
JP5459946B2 (ja) * 2007-09-28 2014-04-02 株式会社日立製作所 車両用直流電源装置
WO2009085658A2 (fr) * 2007-12-31 2009-07-09 University Of Toledo Système intégré de mesure et d'égalisation de la tension de cellules pour des batteries connectées en série et procédé d'utilisation du système
DE102009000323A1 (de) * 2009-01-20 2010-07-22 Robert Bosch Gmbh Serienschaltung von Schaltreglern zur Energieübertragung in Batteriesystemen
DE102011079360A1 (de) * 2011-07-19 2013-01-24 Sb Limotive Company Ltd. Vorrichtung und Verfahren zur Messung einer maximalen Zellspannung
DE102011079363A1 (de) * 2011-07-19 2013-01-24 Sb Limotive Company Ltd. Vorrichtung und Verfahren zur Messung einer minimalen Zellspannung

Also Published As

Publication number Publication date
WO2011144508A3 (fr) 2012-11-15
WO2011144508A2 (fr) 2011-11-24
CN102971932A (zh) 2013-03-13
US20140145651A1 (en) 2014-05-29
DE102010029013A1 (de) 2011-11-17

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