DE19810746A1 - Plate with switch for monitoring multi-cell accumulator battery, especially for electric vehicles - Google Patents

Plate with switch for monitoring multi-cell accumulator battery, especially for electric vehicles

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Publication number
DE19810746A1
DE19810746A1 DE1998110746 DE19810746A DE19810746A1 DE 19810746 A1 DE19810746 A1 DE 19810746A1 DE 1998110746 DE1998110746 DE 1998110746 DE 19810746 A DE19810746 A DE 19810746A DE 19810746 A1 DE19810746 A1 DE 19810746A1
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DE
Germany
Prior art keywords
cells
cell
circuit board
board
board according
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.)
Granted
Application number
DE1998110746
Other languages
German (de)
Other versions
DE19810746B4 (en
Inventor
Thomas Brohm
Georg Enkirch
Edgar Schachler
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.)
Clarios Technology and Recycling GmbH
Original Assignee
VARTA Batterie AG
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Filing date
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Application filed by VARTA Batterie AG filed Critical VARTA Batterie AG
Priority to DE1998110746 priority Critical patent/DE19810746B4/en
Publication of DE19810746A1 publication Critical patent/DE19810746A1/en
Application granted granted Critical
Publication of DE19810746B4 publication Critical patent/DE19810746B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • 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
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/667—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an electronic component, e.g. a CPU, an inverter or a capacitor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/42—Grouping of primary cells into 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
    • 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
    • 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

Abstract

The plate (1) is cut out to form segments (3). The segments determine each cell and are connected to the pole connections. The segments carry take-offs for the temperature and voltage of the cell. One segment at least has connectors (5) provided for input and output of a data bus. Switches allow monitoring of accumulator, state of charge.

Description

Die Erfindung betrifft eine Platine mit einer Schaltung zur Überwachung einer mehrzelligen Akkumulatorenbatterie, deren Zellen und Polanschlüsse sich in einer Ebene befinden.The invention relates to a circuit board with a circuit for monitoring a multi-cell Accumulator battery, whose cells and pole connections are on one level.

Durch Zellenverbinder sind die Zellenpole der einzelnen Zellen in der Weise miteinander elektrisch verbunden, daß die Zellen eine Batterie mit gemeinsamen Endpolen bilden. Üblicherweise werden die Einzelzellen in Serie geschaltet, d. h., daß der positive Pol einer Zelle mit dem negativen Pol der nächsten Zelle verbunden wird.The cell poles of the individual cells are connected to one another in this way by cell connectors electrically connected so that the cells form a battery with common end poles. Usually, the individual cells are connected in series, i. that is, the positive pole is one Cell is connected to the negative pole of the next cell.

Vorrangiges Anwendungsgebiet von Batterien der vorgenannten Art ist die Elektrotraktion. Die Zellen der Batterie sind bei ihrer Verwendung in einem Elektrostraßenfahrzeug einer starken Zyklenbelastung ausgesetzt, wobei schon geringe Fertigungs- oder Temperaturab­ weichungen der Zellen untereinander deren Lade- und Entladeverhalten beeinflussen. Um ein Auseinanderlaufen der Leistungsfähigkeit der Einzelzellen und eine damit verbundene Minderung der Leistungsfähigkeit der gesamten Batterie zu verhindern, schlägt das Doku­ ment EP 524 377 einen Zellenverbinder vor, der zur Überwachung des Betriebszustandes der Batterie mit einer Platine versehen ist, auf der sich eine Meß- und Auswerteschaltung befindet. Die bekannte Überwachungsvorrichtung soll vorzugsweise so an einer Batterie an­ geordnet werden, daß sich links und rechts von ihr gleichviele Zellen befinden, so daß die gesamte Batterie überwacht und ihre Ladung gesteuert werden kann.The primary area of application for batteries of the aforementioned type is electrical traction. The cells of the battery are one when used in an electric road vehicle exposed to strong cyclic loads, with even low manufacturing or temperature Cells' interactions affect their charging and discharging behavior. Around a divergence of the performance of the individual cells and a related The documentary suggests preventing the entire battery from deteriorating ment EP 524 377 a cell connector for monitoring the operating state the battery is provided with a circuit board on which there is a measuring and evaluation circuit located. The known monitoring device should preferably be connected to a battery in this way are arranged so that there are the same number of cells to the left and right of it, so that the entire battery can be monitored and its charge can be controlled.

Weiterhin sind aus den Dokumenten DE 41 32 229 und DE 195 04 629 Verfahren und Vorrich­ tungen bekannt, die die Feststellung von Ladungsunterschieden zwischen den einzelnen Zellen und deren Ausgleich gestatten. Dazu werden Zellengruppen oder alle Einzelzellen mit Leitungen für die Spannungsmessung, Stromleitungen für den Ladungsausgleich sowie Temperatursensoren versehen und mit einer zentralen Batterieüberwachungseinheit ver­ knüpft. Insgesamt ergibt sich daraus eine extreme Komplexität der Verkabelung und eine sehr hohe Anzahl notwendiger Kontaktstellen, die zu einer Störanfälligkeit der Batterieüber­ wachung führen. Insbesondere bei Lithium-Ionen-Akkumulatoren, die durch Überladung oder Tiefentladungen irreversibel geschädigt werden können, ist eine sichere Überwachung des Ladezustandes der Einzelzellen notwendig.Furthermore, from documents DE 41 32 229 and DE 195 04 629 are method and device tion known that the determination of charge differences between the individual Allow cells and their compensation. For this purpose, cell groups or all individual cells are included Lines for voltage measurement, power lines for charge equalization and Provide temperature sensors and ver with a central battery monitoring unit ties. Overall, this results in an extreme complexity of the cabling and one very high number of necessary contact points, which lead to battery failure keep watch. Especially in the case of lithium-ion batteries, which are caused by overcharging or Deep discharges can be irreversibly damaged, is a safe monitoring of the State of charge of the individual cells necessary.

Die Erfindung hat sich die Aufgabe gestellt, eine Platine mit einer Schaltung zur Überwa­ chung einer mehrzelligen Akkumulatorenbatterie anzugeben, die den Aufwand für die elektri­ sche Verbindung zwischen der Überwachungselektronik und den Zellen sowie zwischen der Überwachungselektronik und einer zentralen Steuereinheit auf ein Minimum reduziert und damit die Störanfälligkeit vermindert. The invention has set itself the task of a circuit board with a circuit for monitoring Chung specify a multi-cell battery, the effort for the electri cal connection between the monitoring electronics and the cells and between the Monitoring electronics and a central control unit reduced to a minimum and thus reducing the susceptibility to failure.  

Erfindungsgemäß wird die Aufgabe durch eine Platine gelöst, die gattungsgemäß im An­ spruch 1 angegeben ist und die die dort angegebenen Merkmale besitzt. Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen 2 bis 9 dargelegt.According to the invention the object is achieved by a circuit board which is of the generic type claim 1 is specified and has the features specified there. More beneficial Embodiments of the invention are set out in subclaims 2 to 9.

Die Erfindung wird durch eine Platine realisiert, die eine Anzahl von Kontaktstellen enthält, welche durch Aufstecken und Fixieren der Platine ohne zusätzliche Kabel direkt mit den Polanschlüssen der zu überwachenden Zellen verbunden wird. Zur Temperaturmessung an den Zellen sind auf der Platine Wärmeleitstrecken vorgesehen, welche die Temperatur der Zellenoberfläche oder eines der Zellenpole zu einem auf der Platine angebrachten Temperatursensor leiten. Damit entfallen alle Kabelverbindungen zwischen den zu überwa­ chenden Zellen und der Überwachungselektronik, welche ebenfalls auf der Platine angeord­ net ist. Auf einzelnen Segmenten kann die Meß- und Steuerelektronik für mehrere Zellen angeordnet sein. Vorzugsweise erfolgt dieses auf den mittleren Segmenten, so daß eine Platine für ein fünfzelliges Balleriemodul durch Abtrennung eines oder beider Randsegmente auch für ein vierzelliges oder dreizelliges Batteriemodul verwendet werden kann.The invention is implemented by a circuit board which contains a number of contact points, which by plugging and fixing the board without additional cables directly with the Pole connections of the cells to be monitored is connected. To measure temperature the cells are provided on the circuit board with heat conduction lines which measure the temperature of the Cell surface or one of the cell poles to one attached to the circuit board Conduct temperature sensor. This eliminates all cable connections between the to cells and the monitoring electronics, which are also arranged on the circuit board is not. The measuring and control electronics can be used for several cells on individual segments be arranged. This is preferably done on the middle segments, so that a Circuit board for a five-cell baller module by separating one or both edge segments can also be used for a four-cell or three-cell battery module.

Die Platine besitzt vorzugsweise weitere Durchbrüche für Berstmembranöffnungen und/oder Befüllstutzen der Zellen. Sie ist vorzugsweise aus einem flexiblen Material gefertigt, welches Verschiebungen der einzelnen Zellen eines Batteriemoduls untereinander im mm-Bereich gestattet. In einer weiteren Ausgestaltung der Erfindung wird die Platine durch flexible Zellenverbinder an den Polanschlüssen der Zellen befestigt, wobei die Zellenverbinder vorzugsweise auch in die Platine integriert sind. In einer bevorzugten Ausgestaltung der Erfindung stellt die Platine gleichzeitig den Deckel der Akkumulatorenbatterie dar.The circuit board preferably has further openings for bursting membrane openings and / or Filling nozzle of the cells. It is preferably made of a flexible material, which Displacements of the individual cells of a battery module among themselves in the mm range allowed. In a further embodiment of the invention, the board is flexible Cell connectors attached to the pole terminals of the cells, the cell connectors are preferably also integrated into the board. In a preferred embodiment of the Invention represents the circuit board at the same time the cover of the accumulator battery.

Für die Verbindung der Platine mit anderen Geräten, beispielsweise mit der Überwachungs­ elektronik weiterer Batterien, die insgesamt ein Batteriemodul bilden bzw. mit einem für ein Batteriemodul zuständiges zentrales Batteriemanagementsystem ist die Platine mit einem Ein- und Ausgang für einen Datenbus ausgerüstet. Vorzugsweise wird die Platine in Form einer gedruckten Schaltung realisiert.For connecting the board with other devices, for example with the monitoring electronics of further batteries, which form a battery module or with one for one The central battery management system responsible for the battery module is the circuit board with a Input and output equipped for a data bus. Preferably the board is in shape a printed circuit.

Die Erfindung ist anhand von 4 Figuren dargestellt.The invention is illustrated with the aid of 4 figures.

Es zeigen:Show it:

Fig. 1 eine Platine für eine Batterie bestehend aus fünf prismatischen Zel­ len, Fig. 1 is a circuit board for a battery of five prismatic cell h len consisting,

Fig. 2 die Explosionsdarstellung eines fünfzelligen Batteriemoduls mit pris­ matischen Zellen, Fig. 2 shows the exploded view of a battery module with fünfzelligen pris matic cells

Fig. 3 eine Batterie, bei der zwei erfindungsgemäße Platinen für jeweils fünf prismatische Zellen verwendet werden und Fig. 3 shows a battery in which two boards according to the invention are used for five prismatic cells and

Fig. 4 eine Platine für eine Batterie bestehend aus sechs Rundzellen. Fig. 4 is a circuit board for a battery consisting of six round cells.

Beispiel 1example 1

Die in Fig. 1 dargestellte Platine 1 besitzt eine Schaltung zur Überwachung von fünf prisma­ tischen Zellen. Die auf die Platine 1 gedruckte Schaltung enthält für jede der zu überwa­ chenden Zellen durch Einschnitte 2 getrennte Segmente 3, die durch Auflegen und Fixieren der Platine 1 an den Polanschlußkontakten 4 mit den jeweiligen Polanschlüssen der Zellen verbunden werden. Die Platine 1 enthält weiterhin Ein- und Ausgänge 5 für einen Datenbus, der die Verbindung zu anderen Batterien oder zu einer zentralen Auswerteelektronik her­ stellt. Die Platine 1 weist weiterhin Durchbrüche 6, 7 für Berstöffnungen und Befüllstutzen der Zellen auf.The board 1 shown in FIG. 1 has a circuit for monitoring of five prismatic cells. The circuit printed on the circuit board 1 contains for each of the cells to be supervised by cuts 2 separate segments 3 , which are connected by placing and fixing the circuit board 1 to the pole connection contacts 4 with the respective pole connections of the cells. The circuit board 1 also contains inputs and outputs 5 for a data bus, which provides the connection to other batteries or to a central evaluation electronics. The circuit board 1 also has openings 6 , 7 for bursting openings and filling ports of the cells.

Fig. 2 zeigt die Explosionsdarstellung einer aus fünf prismatischen Zellen bestehenden Batterie. Die Zellen 8 sind in einem Trog 9 angeordnet. Die Platine 1 erstreckt sich oberhalb der Zellen 8 und wird an den Polanschlußkontakten 4 auf die Polanschlüsse 10 aufgesteckt sowie mit den Zellenverbindern 11 durch die Verschraubungen 12 befestigt. Die Platine wird von einem Deckel 13 abgedeckt, der Durchgänge für die Batterieanschlüsse 14 und den Datenbus 15 besitzt. Fig. 2 shows the exploded view of a group consisting of five prismatic cell battery. The cells 8 are arranged in a trough 9 . The circuit board 1 extends above the cells 8 and is plugged onto the pole connection contacts 4 on the pole connections 10 and fastened to the cell connectors 11 by means of the screw connections 12 . The circuit board is covered by a cover 13 which has passages for the battery connections 14 and the data bus 15 .

Beispiel 2Example 2

Fig. 3 zeigt eine Lithium-Ionen-Batterie, die aus 10 prismatischen Zellen 8 mit einem Ener­ gieinhalt von jeweils etwa 0,25 kWh besteht. Die Zellen 8 sind stehend nebeneinander ange­ ordnet und durch Glasfasermatten 16, Seitenplatten 17 und Honigwabenplatten 18 zu einer Batterie zusammengefaßt. Unter den Zellen 8 ist einen elektrische Isolationsschicht 19 und ein Wärmetauscher 20 angeordnet. Die Zellen 8 sind in Serie miteinander verschaltet und werden einzeln elektronisch überwacht. Dazu werden die einzelnen Zellenspannungen und die Polanschlußtemperaturen gemessen. Die Elektronik zur Spannungs- und Temperatur­ messung sowie zuschaltbare parallele Widerstände zur Durchführung eines Ladeausgleichs sind auf zwei Platinen 1 untergebracht. Für die Temperaturmessung gehen von den Polan­ schlußkontakten 4 der Platine 1 Wärmeleitstrecken ab, die die Polanschlußtemperaturen zu den in die Schaltung integrierten Temperatursensoren leiten. Die Platine 1 wird von oben auf die Polanschlüsse 10 gesteckt. Anschließend werden die (hier nicht dargestellten) Zellenver­ binder 11 aufgesetzt und mit den (hier nicht dargestellten) Verschraubungen 12 auf den Polanschlüssen 10 fixiert. Die (hier nicht dargestellten) Ein- und Ausgänge 5 der Platine 1 werden an einen Datenbus angeschlossen, der die Batterie mit weiteren Batterien und einem zentralen Batteriemanagementsystem verbindet. Fig. 3 shows a lithium-ion battery, which consists of 10 prismatic cells 8 with an energy content of about 0.25 kWh each. The cells 8 are arranged side by side and are combined by glass fiber mats 16 , side panels 17 and honeycomb panels 18 to form a battery. An electrical insulation layer 19 and a heat exchanger 20 are arranged under the cells 8 . The cells 8 are interconnected in series and are individually monitored electronically. For this purpose, the individual cell voltages and the pole connection temperatures are measured. The electronics for voltage and temperature measurement as well as switchable parallel resistors for carrying out charge equalization are housed on two boards 1 . For the temperature measurement go from the Polan circuit contacts 4 of the circuit board 1 from heat conduction, which conduct the pole connection temperatures to the temperature sensors integrated in the circuit. The circuit board 1 is plugged onto the pole connections 10 from above. Then the (not shown here) Zellver binder 11 are placed and fixed with the screw connections 12 (not shown here) on the pole connections 10 . The inputs and outputs 5 of the circuit board 1 (not shown here) are connected to a data bus which connects the battery to further batteries and a central battery management system.

Beispiel 3Example 3

Fig. 4 zeigt eine Platine 1 für eine Lithium-Ionen-Batterie bestehend aus 6 Rundzellen mit einem Energieinhalt von jeweils 0,3 kWh. Die Zellen sind in Paaren angeordnet. Die Polan­ schlußkontakte 4 sind auf durch Einschnitte 2 getrennten Segmenten 3 angeordnet. Die Zellen sind dabei in Serie miteinander verschaltet und werden jeweils von den auf den Seg­ menten 3 sich befindenden Schaltungen einzeln überwacht. Dazu werden die einzelnen Zellenspannungen und Polanschlußtemperaturen gemessen. Die Platine 1 wird auf die Polanschlüsse der Zellen aufgesteckt und an ihnen fixiert. Die Verbindung der Platine 1 mit dem nicht dargestellten Batteriemanagement erfolgt mit einem Datenbus über die Ein- und Ausgänge 5. Die Platine 1 besitzt weiterhin Durchbrüche 6, 7 für Berstöffnungen und Befüll­ stutzen der Zellen. FIG. 4 shows a circuit board 1 for a lithium-ion battery consisting of 6 round cells with an energy content of 0.3 kWh each. The cells are arranged in pairs. The Polan circuit contacts 4 are arranged on segments 3 separated by cuts 2 . The cells are connected in series with each other and are individually monitored by the circuits located on the segments 3 . For this purpose, the individual cell voltages and pole connection temperatures are measured. The circuit board 1 is plugged onto the pole connections of the cells and fixed to them. The circuit board 1 is connected to the battery management (not shown) using a data bus via the inputs and outputs 5 . The board 1 also has openings 6 , 7 for bursting openings and filling the cells.

Claims (9)

1. Platine mit einer Schaltung zur Überwachung einer mehrzelligen Akkumulatorenbatterie, deren Zellen und Polanschlüsse sich in einer Ebene befinden, dadurch gekennzeichnet, daß die Platine (1) durch Einschnitte (2) in Segmente (3) unterteilt ist, die einzelnen Zellen (8) zugeordnet und an Polanschlußkontakten (4) mit deren Polanschlüssen (10) verbun­ den sind, wobei auf den Segmenten (3) ein Abgriff für die Temperatur und die Spannung der Zellen vorhanden ist und mindestens ein Segment (3) Datenleitungen zu ge­ meinsamen Ein- und Ausgängen (5) eines Datenbusses besitzt.1. Circuit board with a circuit for monitoring a multi-cell accumulator battery, the cells and pole connections of which are located in one plane, characterized in that the circuit board ( 1 ) is divided into segments ( 3 ) by cuts ( 2 ), the individual cells ( 8 ) assigned and connected to pole connection contacts ( 4 ) with their pole connections ( 10 ), the segments ( 3 ) having a tap for the temperature and the voltage of the cells and at least one segment ( 3 ) data lines to common inputs and Has outputs ( 5 ) of a data bus. 2. Platine nach Anspruch 1, dadurch gekennzeichnet, daß die Platine (1) zur Bestimmung der einzelnen Zellentemperaturen an mindestens einem Polanschluß (4) jeder Zelle (3) eine Wärmeleitstrecke besitzt, auf der sich ein Temperatursensor befindet.2. Board according to claim 1, characterized in that the board ( 1 ) for determining the individual cell temperatures at at least one pole connection ( 4 ) of each cell ( 3 ) has a heat conduction path on which a temperature sensor is located. 3. Platine nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß sich auf den jeweils einer Zelle (8) zugeordneten Segmenten (3) eine Bypass-Schaltung befindet, die ein Teil­ laden oder Teilentladen jeder einzelnen Zelle (8) gestattet.3. A circuit board according to claim 1 and / or 2, characterized in that there is a bypass circuit on the respective segments ( 3 ) assigned to a cell ( 8 ) which allows a part to be loaded or partially unloaded from each individual cell ( 8 ). 4. Platine nach einem oder mehreren der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die einer oder mehreren Zellen (8) zugeordneten Segmente (3) die Mess- und Steuer­ elektronik für weitere Zellen (8) enthalten.4. Board according to one or more of claims 1 to 3, characterized in that the one or more cells (8) associated with segments (3) comprise measuring and control electronics for further cells (8). 5. Platine nach einem oder mehreren der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Platine (1) Durchbrüche für Polanschlußkontakte (4) und Berstöffnungen (6) und/oder Befüllstutzen (7) der Zellen (8) besitzt.5. Board according to one or more of claims 1 to 4, characterized in that the board ( 1 ) has openings for pole connection contacts ( 4 ) and bursting openings ( 6 ) and / or filler neck ( 7 ) of the cells ( 8 ). 6. Platine nach einem oder mehreren der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Platine (1) aus einem flexiblen Material gefertigt ist, das die Verschiebung der Zellen (8) untereinander im mm-Bereich gestattet.6. Board according to one or more of claims 1 to 5, characterized in that the board ( 1 ) is made of a flexible material that allows the displacement of the cells ( 8 ) with each other in the mm range. 7. Platine nach Anspruch 6, dadurch gekennzeichnet, daß die Platine (1) durch flexible Zellenverbinder (11) an den Polanschlüssen (10) der Zellen (8) befestigt ist.7. Circuit board according to claim 6, characterized in that the circuit board ( 1 ) is fastened by flexible cell connectors ( 11 ) to the pole connections ( 10 ) of the cells ( 8 ). 8. Platine nach einem oder mehreren der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Zellenverbinder (11) in die Platine (1) integriert sind. 8. Board according to one or more of claims 1 to 7, characterized in that the cell connector ( 11 ) in the board ( 1 ) are integrated. 9. Platine nach Anspruch 8, dadurch gekennzeichnet, daß die Platine (1) gleichzeitig den Deckel (13) der Akkumulatorenbatterie bildet.9. Circuit board according to claim 8, characterized in that the circuit board ( 1 ) simultaneously forms the lid ( 13 ) of the accumulator battery.
DE1998110746 1998-03-12 1998-03-12 Circuit board with a circuit for monitoring a multi-cell accumulator battery Expired - Fee Related DE19810746B4 (en)

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