WO2019122064A1 - Electrical battery module using optical communication - Google Patents

Electrical battery module using optical communication Download PDF

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Publication number
WO2019122064A1
WO2019122064A1 PCT/EP2018/086072 EP2018086072W WO2019122064A1 WO 2019122064 A1 WO2019122064 A1 WO 2019122064A1 EP 2018086072 W EP2018086072 W EP 2018086072W WO 2019122064 A1 WO2019122064 A1 WO 2019122064A1
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WO
WIPO (PCT)
Prior art keywords
master
battery module
optical
measuring devices
battery
Prior art date
Application number
PCT/EP2018/086072
Other languages
German (de)
French (fr)
Inventor
Stephan Schmidt
Christian Wick
Original Assignee
Volkswagen Aktiengesellschaft
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 Volkswagen Aktiengesellschaft filed Critical Volkswagen Aktiengesellschaft
Priority to KR1020207020220A priority Critical patent/KR102454578B1/en
Priority to CN201880082328.9A priority patent/CN111465526B/en
Publication of WO2019122064A1 publication Critical patent/WO2019122064A1/en

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Classifications

    • 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
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27—Arrangements for networking
    • H04B10/278—Bus-type networks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • 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
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • Y02T10/72—Electric energy management in electromobility
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the invention relates to an electric battery module.
  • Electric battery modules are e.g. in electric vehicles as part of a
  • a battery module to a plurality of battery cells, which are connected in series and / or parallel, in which case a plurality of battery modules are connected in series and / or in parallel, so as to form a battery unit with desired voltage and capacity.
  • the individual battery modules are data technically connected to a central control unit, the battery management control unit.
  • the data connection between the control units of the battery modules and the central battery management control unit is designed, for example, as a CAN bus.
  • the battery module groups of battery cells are associated with measuring devices that detect, for example, voltage and temperature of the associated battery cells and transmit to a central control unit of the battery module.
  • This central control unit can also transmit control commands to the measuring devices, so that, for example, a cell balancing is performed.
  • This central control unit of the battery module can also be referred to as master.
  • the data transmission between the measuring devices and the master can be electrical or optical.
  • a generic electrical energy storage system of an electric vehicle comprising a plurality of electrical components and data transmission devices for transmitting data signals from and / or to at least one of the components.
  • the data transmission devices comprise at least one transmission path for electromagnetic radiation for data transmission.
  • at least one transmission path is formed as an optical waveguide for optical data signal transmission, wherein preferably the optical waveguide is connected via a connector with the affected component.
  • at least one transmission path is designed as an optocoupler.
  • a vehicle with a data bus system and a high-voltage electrical storage is known, which in the data bus system of the vehicle is integrated and which has a memory management unit and at least one cell module.
  • the memory management unit is connected to the data bus system of the vehicle.
  • the at least one cell module is an electronic one
  • Memory management unit and the electrical cell monitoring unit interconnects.
  • the invention is based on the technical problem of providing an electric battery module with an alternative transmission path for the data.
  • the electric battery module has a plurality of battery numbers, respectively
  • Groups of battery cells measuring devices are associated with a data transmission device.
  • the battery module has at least one master with an interface to a battery management control unit, wherein the data transmission devices and the at least one master are optical transmission links.
  • the optical transmission path in each case comprises a light guide, which is assigned to two adjacent measuring devices or a measuring device and the master.
  • the advantage of such a shared fiber daisy chain network is that the associated data transmission is similar to electrical data transmission.
  • the electronic board with its logic can be widely used, with only the conversion of electrical signals into optical signals or vice versa must be realized.
  • one group contains 4 to 12 battery cells.
  • the interface of the master to the bus system is preferably designed as a CAN interface. Alternatively, this interface can also be designed as a FlexRay interface. However, this interface can also be a radio interface or an optical interface.
  • the measuring devices may additionally have control units to perform a cell balancing.
  • each optical transmitter of a measuring device and an optical receiver of the other measuring device associated with the respective optical fiber the master and the last measuring device is associated with an optical fiber, so that a ring structure is formed.
  • Measuring device associated with the respective optical waveguide wherein the transmitter and receiver of the measuring devices are designed such that each couple in two light guide light or decouple.
  • an open chain is realized, which is partly faster than a ring structure.
  • the measuring devices each have two optical transmitters and two optical receivers, wherein in each case a transmitter and a receiver are assigned to a light guide.
  • a transmitter and a receiver are assigned to a light guide.
  • the transmitters and receivers are designed in such a way that their emission characteristic and receiving characteristic are variable, so that the number of components is minimal.
  • the light guides are formed as Plexiglas, which is very low, especially for cost reasons.
  • the battery module has a multiplicity of battery cells, with groups of battery cells each having measuring devices
  • Data transmission device are assigned, wherein the battery module has at least one master with an interface to a battery management control unit, wherein the data transmission means and the at least one master optical
  • Measuring devices and the master are designed as optical free space transmission, wherein the data transmission means are designed such that the measuring devices communicate directly bidirectionally with the master. This can be an extremely fast
  • Communication can be realized, which is very compact, as can be completely dispensed with light guide.
  • the battery module has a multiplicity of battery cells, with groups of battery cells each having measuring devices
  • Data transmission device are assigned, wherein the battery module has at least one master with an interface to a battery management control unit, wherein the data transmission device and the at least one master optical transmission links comprising, wherein the transmission paths between the measuring means and the master via a common optical waveguide, wherein the measuring means and the master are configured as a meshed optical network.
  • the measuring devices and the master are configured as fully meshed optical network.
  • the optical fiber for the meshed network is a Plexiglas disk.
  • Fig. 1 is a partial schematic representation of a battery module in a first
  • Fig. 2 is a partial schematic representation of a battery module in a second
  • Fig. 3 is a partial schematic representation of a battery module in a third
  • Fig. 4 is a schematic partial view of a battery module in a fourth
  • Fig. 5 is a schematic partial view of a battery module in a fifth
  • FIG. 1 shows schematically a part of a battery module 100.
  • the battery module 100 has a plurality of battery cells 1 connected in series.
  • battery cells 1 may be connected in parallel, but this is not shown for reasons of clarity.
  • the battery cells 1 are subdivided in groups, wherein, for example, a group A, B and C exists, to each of which a measuring device 2A, 2B and 2C is assigned.
  • Measuring devices 2A-2C each have an optical transmitter 3, which is designed, for example, as an LED. Furthermore, the measuring devices 2A-2C each have one optical receiver 4, which are formed for example as phototransistors. Furthermore, the battery module 100 has a master 5, which likewise has an optical transmitter 3 and an optical receiver 4. The master 5 additionally has an interface 6 to a battery management control unit, not shown. The battery module 100 has a plurality of light guides 7, 8, which are formed for example as Plexiglas panes.
  • the optical fibers 7 are each arranged such that an optical transmitter 3 of the master 5 or a measuring device 2A-2B and an optical receiver 4 of an adjacent
  • Measuring device 2A-2C a light guide 7 are assigned.
  • the optical transmitter 3 of the last measuring device 2C is coupled via the light guide 8 to the optical receiver 4 of the master 5.
  • the master 5 wants to transmit a control command to the measuring device 2C
  • the master 5 sends this control command by means of its optical transmitter 3 via the first optical waveguide 7 to the measuring device 2A.
  • the optical control command is received and determined that this is intended for the measuring device 2C.
  • Measuring device 2A then sends the control command to the measuring device 2B and then finally to the measuring device 2C. The same way, they lead
  • Measuring devices 2A-2C forward their measurement data to the master 5. So there is a ring structure.
  • the optical transmitters 3 and the optical receivers 4 of the measuring devices 2A, 2B can change their transmission characteristic or their receiving characteristic so that they can transmit in both directions and can receive from both directions.
  • Fig. 3 is a similar embodiment as shown in Fig. 2, in contrast, the two measuring devices 2A, 2B each have two optical transmitter 3 and two optical receiver 4. Although this requires more components, however, optical transmitter 3 and receiver 4 need not be able to change their characteristics.
  • FIG. 4 shows a fourth embodiment of a battery module 100, wherein the transmission paths between the measuring devices 2A-2C and the master 5 are designed as a free-space optical transmission, the communication being bidirectional. In this case, a housing wall 9 can be exploited, on which the optical signals are reflected.
  • FIG. 5 shows a fifth embodiment of a battery module 100, wherein the transmission paths between the measuring devices 2A-2C and the master 5 take place via a common optical waveguide 10, the measuring devices 2A-2C and the master 5 being a meshed optical network are configured.
  • each network node is connected to one or more other nodes. When each node is connected to every other node, it is called a fully meshed network.
  • Measuring devices 2A-2C and the master form a fully meshed network.
  • each measuring device 2A-2C can communicate directly with the master 5 and vice versa.
  • the communication proceeds by means of a hand-shake method.
  • the failure of a measuring device 2A-2C also does not lead to total failure, but only the defective measuring device no longer provides data or can not receive any control commands.
  • a measuring device 2A-2C can communicate with two or more adjacent measuring devices on each side so as to be able to skip a defective measuring device.
  • the measuring device 2C attempts to transmit data to the master 5
  • this data is also received by the measuring devices 2B and 2A, whereby they recognize that the data are not intended for them.
  • the measuring devices 2B, 2A now store the data of the measuring device 2C. Then send in the master 5
  • Measuring devices 2A and / or 2B again send the cached data from the measuring device 2C and wait to see if the master 5 now confirms the reception.
  • Such a meshed network is thus very robust against failures and transmission problems. It should be noted that all nodes can transmit in all directions, and the nodes may also send at the same time.
  • the optical waveguide 10 is preferably formed as Plexiglas disk.

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Abstract

The invention relates to an electrical battery module (100). The battery module (100) has a plurality of battery cells (1). Groups (A-C) of battery cells (1) are associated with respective measuring devices (2A-2C) having a data transfer device. The battery module (100) has at least one master (5) having an interface (6) to a battery management control unit. The data transfer devices and the at least one master (5) comprise optical transmission paths. The optical transmission paths each comprise an optical waveguide (7, 8), which is associated with two adjacent measuring devices or one measuring device and the master.

Description

Beschreibung  description
ELEKTRISCHES BATTERIEMODUL USING OPTICAL COMMUNICATION ELECTRICAL BATTERY MODULE USING OPTICAL COMMUNICATION
Die Erfindung betrifft ein elektrisches Batteriemodul. The invention relates to an electric battery module.
Elektrische Batteriemodule werden z.B. in Elektrofahrzeugen als Bestandteil einer Electric battery modules are e.g. in electric vehicles as part of a
Traktionsbatterie eingesetzt. Dabei weist ein Batteriemodul eine Vielzahl von Batteriezellen auf, die in Reihe und/oder parallel geschaltet sind, wobei dann mehrere Batteriemodule in Reihe und/oder parallel geschaltet werden, um so eine Batterieeinheit mit gewünschter Spannung und Kapazität zu bilden. Die einzelnen Batteriemodule sind dabei datentechnisch mit einem zentralen Steuergerät, dem Batteriemanagement-Steuergerät, verbunden. Die Datenverbindung zwischen den Steuergeräten der Batteriemodule und dem zentralen Batteriemanagement- Steuergerät ist beispielsweise als CAN-Bus ausgebildet. In dem Batteriemodul sind jeweils Gruppen von Batteriezellen Messeinrichtungen zugeordnet, die beispielsweise Spannung und Temperatur der zugeordneten Batteriezellen erfassen und an ein zentrales Steuergerät des Batteriemoduls übermitteln. Dieses zentrale Steuergerät kann auch Steuerbefehle an die Messeinrichtungen übermitteln, damit beispielsweise ein Zell-Balancing durchgeführt wird. Dieses zentrale Steuergerät des Batteriemoduls kann auch als Master bezeichnet werden. Die Datenübertragung zwischen den Messeinrichtungen und dem Master kann dabei elektrisch oder optisch sein. Traction battery used. In this case, a battery module to a plurality of battery cells, which are connected in series and / or parallel, in which case a plurality of battery modules are connected in series and / or in parallel, so as to form a battery unit with desired voltage and capacity. The individual battery modules are data technically connected to a central control unit, the battery management control unit. The data connection between the control units of the battery modules and the central battery management control unit is designed, for example, as a CAN bus. In the battery module groups of battery cells are associated with measuring devices that detect, for example, voltage and temperature of the associated battery cells and transmit to a central control unit of the battery module. This central control unit can also transmit control commands to the measuring devices, so that, for example, a cell balancing is performed. This central control unit of the battery module can also be referred to as master. The data transmission between the measuring devices and the master can be electrical or optical.
Aus der DE 10 2009 058 879 A1 ist ein gattungsgemäßes elektrisches Energiespeichersystem eines Elektrofahrzeugs bekannt, umfassend eine Mehrzahl von elektrischen Komponenten und Datenübertragungseinrichtungen zur Übertragung von Datensignalen von und/oder zu wenigstens einer der Komponenten. Dabei umfassen die Datenübertragungseinrichtungen wenigstens eine Übertragungsstrecke für elektromagnetische Strahlung zur Datenübertragung. Vorzugsweise ist wenigstens eine Übertragungsstrecke als Lichtwellenleiter zur optischen Datensignalübertragung ausgebildet, wobei vorzugsweise der Lichtwellenleiter über einen Steckverbinder mit der betroffenen Komponente verbunden ist. Weiter ist auch offenbart, dass mindestens eine Übertragungsstrecke als Optokoppler ausgebildet ist. From DE 10 2009 058 879 A1 a generic electrical energy storage system of an electric vehicle is known, comprising a plurality of electrical components and data transmission devices for transmitting data signals from and / or to at least one of the components. In this case, the data transmission devices comprise at least one transmission path for electromagnetic radiation for data transmission. Preferably, at least one transmission path is formed as an optical waveguide for optical data signal transmission, wherein preferably the optical waveguide is connected via a connector with the affected component. Furthermore, it is also disclosed that at least one transmission path is designed as an optocoupler.
Aus der DE 10 2012 202 690 A1 ist ein Fahrzeug mit einem Datenbussystem und einem elektrischen Hochvoltspeicher bekannt, welcher in das Datenbussystem des Fahrzeugs integriert ist und welches eine Speichermanagementeinheit und zumindest ein Zellmodul aufweist. Dabei ist die Speichermanagementeinheit an das Datenbussystem des Fahrzeugs angeschlossen. Weiter ist dem zumindest einen Zellmodul eine elektronische From DE 10 2012 202 690 A1 a vehicle with a data bus system and a high-voltage electrical storage is known, which in the data bus system of the vehicle is integrated and which has a memory management unit and at least one cell module. The memory management unit is connected to the data bus system of the vehicle. Furthermore, the at least one cell module is an electronic one
Zellüberwachungseinheit zugeordnet, wobei ein optisches Datenbussystem die Assigned cell monitoring unit, wherein an optical data bus system the
Speichermanagementeinheit und die elektrische Zellüberwachungseinheit miteinander verbindet. Memory management unit and the electrical cell monitoring unit interconnects.
Der Erfindung liegt das technische Problem zugrunde, ein elektrisches Batteriemodul mit einer alternativen Übertragungsstrecke für die Daten zu schaffen. The invention is based on the technical problem of providing an electric battery module with an alternative transmission path for the data.
Die Lösung des technischen Problems ergibt sich durch ein Batteriemodul mit den Merkmalen des Anspruchs 1 , 7 oder 8. Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. The solution to the technical problem results from a battery module with the features of claim 1, 7 or 8. Further advantageous embodiments of the invention will become apparent from the dependent claims.
Das elektrische Batteriemodul weist eine Vielzahl von Batteriezahlen auf, wobei jeweils The electric battery module has a plurality of battery numbers, respectively
Gruppen von Batteriezellen Messeinrichtungen mit einer Datenübertragungseinrichtung zugeordnet sind. Dabei weist das Batteriemodul mindestens einen Master mit einer Schnittstelle zu einem Batteriemanagement-Steuergerät auf, wobei die Datenübertragungseinrichtungen und der mindestens eine Master optische Übertragungsstrecken sind. Dabei umfasst die optische Übertragungsstrecke jeweils einen Lichtleiter, der zwei benachbarten Messeinrichtungen oder einer Messeinrichtung und dem Master zugeordnet ist. Der Vorteil eines solchen Daisy Chain Netzwerks mit geteilten Lichtleitern ist, dass die damit verbundene Datenübertragung ähnlich der elektrischen Datenübertragung ist. Somit kann die Elektronikplatine mit ihrer Logik weitgehend weiterverwendet werden, wobei nur die Wandlung von elektrischen Signalen in optische Signale bzw. umgekehrt realisiert werden muss. Eine Gruppe enthält beispielsweise 4 bis 12 Batteriezellen. Die Schnittstelle des Masters zu dem Bussystem ist vorzugsweise als CAN-Schnittstelle ausgebildet. Alternativ kann diese Schnittstelle auch als FlexRay-Schnittstelle ausgebildet sein. Allerdings kann diese Schnittstelle auch eine Funkschnittstelle oder eine optische Schnittstelle sein. Die Messeinrichtungen können zusätzlich Steuereinheiten aufweisen, um ein Zell-Balancing durchzuführen. Groups of battery cells measuring devices are associated with a data transmission device. In this case, the battery module has at least one master with an interface to a battery management control unit, wherein the data transmission devices and the at least one master are optical transmission links. In this case, the optical transmission path in each case comprises a light guide, which is assigned to two adjacent measuring devices or a measuring device and the master. The advantage of such a shared fiber daisy chain network is that the associated data transmission is similar to electrical data transmission. Thus, the electronic board with its logic can be widely used, with only the conversion of electrical signals into optical signals or vice versa must be realized. For example, one group contains 4 to 12 battery cells. The interface of the master to the bus system is preferably designed as a CAN interface. Alternatively, this interface can also be designed as a FlexRay interface. However, this interface can also be a radio interface or an optical interface. The measuring devices may additionally have control units to perform a cell balancing.
In einer Ausführungsform ist jeweils ein optischer Sender der einen Messeinrichtung und ein optischer Empfänger der anderen Messeinrichtung dem jeweiligen Lichtleiter zugeordnet, wobei dem Master und der letzten Messeinrichtung ein Lichtleiter zugeordnet ist, sodass eine Ring- Struktur entsteht. In einer alternativen Ausführungsform sind jeweils ein optischer Sender und Empfänger der einen Messeinrichtung und jeweils ein optischer Sender und Empfänger der anderen In one embodiment, in each case one optical transmitter of a measuring device and an optical receiver of the other measuring device associated with the respective optical fiber, the master and the last measuring device is associated with an optical fiber, so that a ring structure is formed. In an alternative embodiment, each one optical transmitter and receiver of a measuring device and each an optical transmitter and receiver of the other
Messeinrichtung dem jeweiligen Lichtleiter zugeordnet, wobei die Sender und Empfänger der Messeinrichtungen derart ausgebildet sind, jeweils in zwei Lichtleiter Licht einzukoppeln oder auszukoppeln. Hierdurch wird eine offene Kette realisiert, die teilweise schneller als eine Ringstruktur ist. Measuring device associated with the respective optical waveguide, wherein the transmitter and receiver of the measuring devices are designed such that each couple in two light guide light or decouple. As a result, an open chain is realized, which is partly faster than a ring structure.
In einer Ausführungsform weisen die Messeinrichtungen jeweils zwei optische Sender und zwei optische Empfänger auf, wobei jeweils ein Sender und Empfänger einem Lichtleiter zugeordnet sind. Somit lässt sich sehr einfach die Zuordnung zu zwei Lichtleitern realisieren, allerdings erhöht sich die Anzahl der benötigten Bauteile. In one embodiment, the measuring devices each have two optical transmitters and two optical receivers, wherein in each case a transmitter and a receiver are assigned to a light guide. Thus, the assignment to two light guides can be realized very easily, but the number of required components increases.
In einer alternativen Ausführungsform sind die Sender und Empfänger derart ausgebildet, dass deren Abstrahlcharakteristik und Empfangscharakteristik veränderbar sind, sodass die Anzahl der Bauelemente minimal ist. In an alternative embodiment, the transmitters and receivers are designed in such a way that their emission characteristic and receiving characteristic are variable, so that the number of components is minimal.
In einer Ausführungsform sind die Lichtleiter als Plexiglasscheiben ausgebildet, was besonders unter Kostengründen sehr günstig ist. In one embodiment, the light guides are formed as Plexiglas, which is very low, especially for cost reasons.
In einer alternativen Ausführungsform weist das Batteriemodul eine Vielzahl von Batteriezellen auf, wobei jeweils Gruppen von Batteriezellen Messeinrichtungen mit einer In an alternative embodiment, the battery module has a multiplicity of battery cells, with groups of battery cells each having measuring devices
Datenübertragungseinrichtung zugeordnet sind, wobei das Batteriemodul mindestens einen Master mit einer Schnittstelle zu einem Batteriemanagement-Steuergerät aufweist, wobei die Datenübertragungseinrichtungen und der mindestens eine Master optische Data transmission device are assigned, wherein the battery module has at least one master with an interface to a battery management control unit, wherein the data transmission means and the at least one master optical
Übertragungsstrecken umfassen, wobei die Übertragungsstrecken zwischen den Transmission links, the transmission links between the
Messeinrichtungen und dem Master als optische Freiraumübertragung ausgebildet sind, wobei die Datenübertragungseinrichtungen derart ausgebildet sind, dass die Messeinrichtungen direkt bidirektional mit dem Master kommunizieren. Hierdurch kann eine extrem schnelle Measuring devices and the master are designed as optical free space transmission, wherein the data transmission means are designed such that the measuring devices communicate directly bidirectionally with the master. This can be an extremely fast
Kommunikation realisiert werden, die sehr kompakt ist, da auf Lichtleiter komplett verzichtet werden kann. Communication can be realized, which is very compact, as can be completely dispensed with light guide.
In einer alternativen Ausführungsform weist das Batteriemodul eine Vielzahl von Batteriezellen auf, wobei jeweils Gruppen von Batteriezellen Messeinrichtungen mit einer In an alternative embodiment, the battery module has a multiplicity of battery cells, with groups of battery cells each having measuring devices
Datenübertragungseinrichtung zugeordnet sind, wobei das Batteriemodul mindestens einen Master mit einer Schnittstelle zu einem Batteriemanagement-Steuergerät aufweist, wobei die Datenübertragungseinrichtung und der mindestens eine Master optische Übertragungsstrecken umfassen, wobei die Übertragungsstrecken zwischen den Messeinrichtungen und dem Master über einen gemeinsamen Lichtwellenleiter erfolgen, wobei die Messeinrichtungen und der Master als vermaschtes optisches Netz konfiguriert sind. Dies erlaubt eine sehr robuste und schnelle Datenübertragung, da vermaschte Netze im Regelfall selbstheilend sind. Dabei kann vorzugsweise vorgesehen sein, dass die Messeinrichtungen und der Master als voll vermaschtes optisches Netz konfiguriert sind. Vorzugsweise ist der Lichtleiter für das vermaschte Netz eine Plexiglasscheibe. Data transmission device are assigned, wherein the battery module has at least one master with an interface to a battery management control unit, wherein the data transmission device and the at least one master optical transmission links comprising, wherein the transmission paths between the measuring means and the master via a common optical waveguide, wherein the measuring means and the master are configured as a meshed optical network. This allows a very robust and fast data transmission, since meshed networks are usually self-healing. It can preferably be provided that the measuring devices and the master are configured as fully meshed optical network. Preferably, the optical fiber for the meshed network is a Plexiglas disk.
Ein bevorzugtes Anwendungsgebiet des Batteriemoduls ist der Einsatz in einer A preferred field of application of the battery module is the use in one
Traktionsbatterie eines Elektrofahrzeugs. Traction battery of an electric vehicle.
Die Erfindung wird nachfolgend anhand bevorzugter Ausführungsbeispiele näher erläutert. Die Figuren zeigen: The invention will be explained in more detail below with reference to preferred embodiments. The figures show:
Fig. 1 eine schematische Teildarstellung eines Batteriemoduls in einer ersten Fig. 1 is a partial schematic representation of a battery module in a first
Ausführungsform,  embodiment,
Fig. 2 eine schematische Teildarstellung eines Batteriemoduls in einer zweiten Fig. 2 is a partial schematic representation of a battery module in a second
Ausführungsform,  embodiment,
Fig. 3 eine schematische Teildarstellung eines Batteriemoduls in einer dritten Fig. 3 is a partial schematic representation of a battery module in a third
Ausführungsform,  embodiment,
Fig. 4 eine schematische Teildarstellung eines Batteriemoduls in einer vierten Fig. 4 is a schematic partial view of a battery module in a fourth
Ausführungsform und  Embodiment and
Fig. 5 eine schematische Teildarstellung eines Batteriemoduls in einer fünften Fig. 5 is a schematic partial view of a battery module in a fifth
Ausführungsform.  Embodiment.
In der Fig. 1 ist schematisch ein Teil eines Batteriemoduls 100 dargestellt. Das Batteriemodul 100 weist eine Vielzahl von Batteriezellen 1 auf, die in Reihe geschaltet sind. Zusätzlich können noch Batteriezellen 1 parallel geschaltet sein, was aber aus Übersichtsgründen nicht dargestellt ist. Die Batteriezellen 1 sind gruppenweise unterteilt, wobei beispielsweise eine Gruppe A, B und C existiert, denen jeweils eine Messeinrichtung 2A, 2B und 2C zugeordnet ist. Die FIG. 1 shows schematically a part of a battery module 100. The battery module 100 has a plurality of battery cells 1 connected in series. In addition, battery cells 1 may be connected in parallel, but this is not shown for reasons of clarity. The battery cells 1 are subdivided in groups, wherein, for example, a group A, B and C exists, to each of which a measuring device 2A, 2B and 2C is assigned. The
Messeinrichtungen 2A-2C weisen jeweils einen optischen Sender 3 auf, der beispielsweise als LED ausgebildet ist. Des Weiteren weisen die Messeinrichtungen 2A-2C jeweils einen optischen Empfänger 4 auf, die beispielsweise als Fototransistoren ausgebildet sind. Weiter weist das Batteriemodul 100 einen Master 5 auf, der ebenfalls einen optischen Sender 3 und einen optischen Empfänger 4 aufweist. Der Master 5 weist zusätzlich eine Schnittstelle 6 zu einem nicht dargestellten Batteriemanagement-Steuergerät auf. Das Batteriemodul 100 weist mehrere Lichtleiter 7, 8 auf, die beispielsweise als Plexiglasscheiben ausgebildet sind. Measuring devices 2A-2C each have an optical transmitter 3, which is designed, for example, as an LED. Furthermore, the measuring devices 2A-2C each have one optical receiver 4, which are formed for example as phototransistors. Furthermore, the battery module 100 has a master 5, which likewise has an optical transmitter 3 and an optical receiver 4. The master 5 additionally has an interface 6 to a battery management control unit, not shown. The battery module 100 has a plurality of light guides 7, 8, which are formed for example as Plexiglas panes.
Die Lichtleiter 7 sind jeweils derart angeordnet, dass ein optischer Sender 3 des Masters 5 oder einer Messeinrichtung 2A-2B und ein optischer Empfänger 4 einer benachbarten The optical fibers 7 are each arranged such that an optical transmitter 3 of the master 5 or a measuring device 2A-2B and an optical receiver 4 of an adjacent
Messeinrichtung 2A-2C einem Lichtleiter 7 zugeordnet sind. Der optische Sender 3 der letzten Messeinrichtung 2C ist über den Lichtleiter 8 mit dem optischen Empfänger 4 des Masters 5 gekoppelt. Measuring device 2A-2C a light guide 7 are assigned. The optical transmitter 3 of the last measuring device 2C is coupled via the light guide 8 to the optical receiver 4 of the master 5.
Möchte nun beispielsweise der Master 5 einen Steuerbefehl an die Messeinrichtung 2C übermitteln, so sendet der Master 5 diesen Steuerbefehl mittels seines optischen Senders 3 über den ersten Lichtleiter 7 an die Messeinrichtung 2A. Dort wird der optische Steuerbefehl empfangen und festgestellt, dass dieser für die Messeinrichtung 2C bestimmt ist. Die For example, if the master 5 wants to transmit a control command to the measuring device 2C, the master 5 sends this control command by means of its optical transmitter 3 via the first optical waveguide 7 to the measuring device 2A. There, the optical control command is received and determined that this is intended for the measuring device 2C. The
Messeinrichtung 2A sendet dann den Steuerbefehl weiter an die Messeinrichtung 2B und diese dann schließlich an die Messeinrichtung 2C. Auf dem gleichen Weg leiten die Measuring device 2A then sends the control command to the measuring device 2B and then finally to the measuring device 2C. The same way, they lead
Messeinrichtungen 2A-2C ihre Messdaten an den Master 5 weiter. Es existiert also eine Ringstruktur. Measuring devices 2A-2C forward their measurement data to the master 5. So there is a ring structure.
In der Fig. 2 ist eine alternative Ausführungsform eines Batteriemoduls 100 dargestellt, wobei die Batteriezellen 1 nicht dargestellt sind. Im Unterschied zur Ausführungsform gemäß Fig. 1 können die optischen Sender 3 und die optischen Empfänger 4 der Messeinrichtungen 2A, 2B ihre Sendecharakteristik bzw. ihre Empfangscharakteristik ändern, sodass diese in beide Richtungen senden können und aus beiden Richtungen empfangen können. 2, an alternative embodiment of a battery module 100 is shown, wherein the battery cells 1 are not shown. In contrast to the embodiment according to FIG. 1, the optical transmitters 3 and the optical receivers 4 of the measuring devices 2A, 2B can change their transmission characteristic or their receiving characteristic so that they can transmit in both directions and can receive from both directions.
In der Fig. 3 ist eine ähnliche Ausführungsform wie in Fig. 2 dargestellt, wobei im Unterschied die beiden Messeinrichtungen 2A, 2B jeweils zwei optische Sender 3 und zwei optische Empfänger 4 aufweisen. Dies benötigt zwar mehr Bauteile, allerdings müssen optische Sender 3 und Empfänger 4 nicht mehr ihre Charakteristik ändern können. In Fig. 3 is a similar embodiment as shown in Fig. 2, in contrast, the two measuring devices 2A, 2B each have two optical transmitter 3 and two optical receiver 4. Although this requires more components, however, optical transmitter 3 and receiver 4 need not be able to change their characteristics.
In der Fig. 4 ist eine vierte Ausführungsform für ein Batteriemodul 100 dargestellt, wobei die Übertragungsstrecken zwischen den Messeinrichtungen 2A-2C und dem Master 5 als optische Freiraumübertragung ausgebildet sind, wobei die Kommunikation bidirektional ist. Dabei kann eine Gehäusewand 9 ausgenutzt werden, an der die optischen Signale reflektiert werden. In der Fig. 5 ist schließlich eine fünfte Ausführungsform für ein Batteriemodul 100 dargestellt, wobei die Übertragungsstrecken zwischen den Messeinrichtungen 2A-2C und dem Master 5 über einen gemeinsamen Lichtwellenleiter 10 erfolgen, wobei die Messeinrichtungen 2A-2C und der Master 5 als vermaschtes optisches Netzwerk konfiguriert sind. In einem vermaschten Netz (englisch Mesh) ist jeder Netzwerkknoten mit einem oder mehreren anderen Knoten verbunden. Wenn jeder Knoten mit jedem anderen Knoten verbunden ist, spricht man von einem vollständig vermaschten Netz. FIG. 4 shows a fourth embodiment of a battery module 100, wherein the transmission paths between the measuring devices 2A-2C and the master 5 are designed as a free-space optical transmission, the communication being bidirectional. In this case, a housing wall 9 can be exploited, on which the optical signals are reflected. Finally, FIG. 5 shows a fifth embodiment of a battery module 100, wherein the transmission paths between the measuring devices 2A-2C and the master 5 take place via a common optical waveguide 10, the measuring devices 2A-2C and the master 5 being a meshed optical network are configured. In a Mesh, each network node is connected to one or more other nodes. When each node is connected to every other node, it is called a fully meshed network.
Zur Erläuterung der Betriebsweise soll zunächst davon ausgegangen werden, dass die To explain the mode of operation should initially be assumed that the
Messeinrichtungen 2A-2C und der Master ein vollständig vermaschtes Netz bilden. In diesem Fall kann jede Messeinrichtung 2A-2C direkt mit dem Master 5 kommunizieren und umgekehrt. Vorzugsweise verläuft dabei die Kommunikation mittels eines Hand-Shake-Verfahrens. Dadurch führt der Ausfall einer Messeinrichtung 2A-2C auch nicht zum Totalausfall, sondern nur die defekte Messeinrichtung liefert keine Daten mehr bzw. kann keine Steuerbefehle empfangen. Measuring devices 2A-2C and the master form a fully meshed network. In this case, each measuring device 2A-2C can communicate directly with the master 5 and vice versa. Preferably, the communication proceeds by means of a hand-shake method. As a result, the failure of a measuring device 2A-2C also does not lead to total failure, but only the defective measuring device no longer provides data or can not receive any control commands.
Wenn nun das Netz nicht vollständig vermascht ist, so muss nur gewährleistet sein, dass eine Messeinrichtung 2A-2C mit zwei oder mehr benachbarten Messeinrichtungen je Seite kommunizieren kann, um so eine defekte Messeinrichtung überspringen zu können. If now the network is not completely meshed, it must only be ensured that a measuring device 2A-2C can communicate with two or more adjacent measuring devices on each side so as to be able to skip a defective measuring device.
Versucht beispielsweise die Messeinrichtung 2C, Daten an den Master 5 zu übermitteln, so werden diese Daten auch von den Messeinrichtungen 2B und 2A empfangen, wobei diese erkennen, dass die Daten nicht für sie bestimmt sind. Die Messeinrichtungen 2B, 2A speichern nun die Daten der Messeinrichtung 2C zwischen. Sendet dann der Master 5 ein If, for example, the measuring device 2C attempts to transmit data to the master 5, this data is also received by the measuring devices 2B and 2A, whereby they recognize that the data are not intended for them. The measuring devices 2B, 2A now store the data of the measuring device 2C. Then send in the master 5
Bestätigungssignal an die Messeinrichtung 2C, so wird auch dieses Bestätigungssignal von den Messeinrichtungen 2A, 2B empfangen und die zwischengespeicherten Daten können gelöscht werden. Empfangen diese hingegen nicht das Bestätigungssignal, so können die Confirmation signal to the measuring device 2C, so this confirmation signal from the measuring devices 2A, 2B is received and the cached data can be deleted. On the other hand, if these do not receive the confirmation signal, then the
Messeinrichtungen 2A und/oder 2B die zwischengespeicherten Daten von der Messeinrichtung 2C erneut versenden und abwarten, ob der Master 5 nun den Empfang bestätigt. Ein solches vermaschtes Netz ist somit sehr robust gegen Ausfälle und Übertragungsprobleme. Dabei ist anzumerken, dass alle Knoten in alle Richtungen übertragen können, wobei die Knoten auch zeitgleich senden dürfen. Der Lichtwellenleiter 10 ist vorzugsweise als Plexiglasscheibe ausgebildet. Measuring devices 2A and / or 2B again send the cached data from the measuring device 2C and wait to see if the master 5 now confirms the reception. Such a meshed network is thus very robust against failures and transmission problems. It should be noted that all nodes can transmit in all directions, and the nodes may also send at the same time. The optical waveguide 10 is preferably formed as Plexiglas disk.

Claims

Patentansprüche claims
1. Elektrisches Batteriemodul (100), wobei das Batteriemodul (100) eine Vielzahl von An electric battery module (100), wherein the battery module (100) has a plurality of
Batteriezellen (1 ) aufweist, wobei jeweils Gruppen (A-C) von Batteriezellen (1 )  Battery cells (1), wherein each groups (A-C) of battery cells (1)
Messeinrichtungen (2A-2C) mit einer Datenübertragungseinrichtung zugeordnet sind, wobei das Batteriemodul (100) mindestens einen Master (5) mit einer Schnittstelle (6) zu einem Batteriemanagement-Steuergerät aufweist, wobei die  Measuring devices (2A-2C) are associated with a data transmission device, wherein the battery module (100) has at least one master (5) with an interface (6) to a battery management control unit, wherein the
Datenübertragungseinrichtungen und der mindestens eine Master (5) optische  Data transmission devices and the at least one master (5) optical
Übertragungsstrecken umfassen,  Include transmission links,
dadurch gekennzeichnet, dass  characterized in that
die optische Übertragungsstrecke jeweils einen Lichtleiter (7, 8) umfasst, der zwei benachbarten Messeinrichtungen oder einer Messeinrichtung und dem Master zugeordnet ist.  the optical transmission path in each case comprises a light guide (7, 8) which is assigned to two adjacent measuring devices or a measuring device and to the master.
2. Elektrisches Batteriemodul nach Anspruch 1 , dadurch gekennzeichnet, dass jeweils ein optischer Sender (3) der einen Messeinrichtung (2A-2B) und ein optischer Empfänger (4) der anderen Messeinrichtung (2B-2C) dem jeweiligen Lichtleiter (7) zugeordnet sind, wobei dem Master (5) und der letzten Messeinrichtung (2C) ein Lichtleiter (8) zugeordnet ist. 2. Electrical battery module according to claim 1, characterized in that in each case an optical transmitter (3) of a measuring device (2A-2B) and an optical receiver (4) of the other measuring device (2B-2C) are assigned to the respective light guide (7) , wherein the master (5) and the last measuring device (2C) is associated with a light guide (8).
3. Elektrisches Batteriemodul nach Anspruch 1 , dadurch gekennzeichnet, dass jeweils ein optischer Sender (3) und Empfänger (4) der einen Messeinrichtung (2A-2B) und jeweils ein optischer Sender (3) und Empfänger (4) der anderen Messeinrichtung (2B-2A) dem jeweiligen Lichtleiter (7) zugeordnet sind, wobei die Sender (3) und Empfänger (4) der Messeinrichtungen (2A-2B) derart ausgebildet sind, jeweils in zwei Lichtleiter (7) Licht einzukoppeln oder auszukoppeln. 3. Electrical battery module according to claim 1, characterized in that in each case an optical transmitter (3) and receiver (4) of a measuring device (2A-2B) and in each case an optical transmitter (3) and receiver (4) of the other measuring device (2B -2A) are associated with the respective optical waveguide (7), the transmitters (3) and receivers (4) of the measuring devices (2A-2B) being designed in such a way to couple or decouple light into two optical waveguides (7).
4. Elektrisches Batteriemodul nach Anspruch 3, dadurch gekennzeichnet, dass die 4. Electrical battery module according to claim 3, characterized in that the
Messeinrichtungen (2A, 2B) jeweils zwei optische Sender (3) und zwei optische  Measuring devices (2A, 2B) in each case two optical transmitters (3) and two optical
Empfänger (4) aufweisen, wobei jeweils ein Sender (3) und Empfänger (4) einem  Receiver (4), wherein in each case a transmitter (3) and receiver (4) one
Lichtleiter (7) zugeordnet sind. Light guide (7) are assigned.
5. Elektrisches Batteriemodul nach Anspruch 3, dadurch gekennzeichnet, dass die Sender (3) und Empfänger (4) derart ausgebildet sind, dass deren Abstrahlcharakteristik und Empfangscharakteristik veränderbar sind. 5. Electrical battery module according to claim 3, characterized in that the transmitter (3) and receiver (4) are formed such that their emission characteristics and receiving characteristics are variable.
6. Elektrisches Batteriemodul nach einem der vorangegangenen Ansprüche, dadurch 6. Electrical battery module according to one of the preceding claims, characterized
gekennzeichnet, dass die Lichtleiter (7, 8) als Plexiglasscheiben ausgebildet sind.  characterized in that the light guides (7, 8) are formed as Plexiglas panes.
7. Elektrisches Batteriemodul (100), wobei das Batteriemodul (100) eine Vielzahl von 7. Electrical battery module (100), wherein the battery module (100) a plurality of
Batteriezellen (1 ) aufweist, wobei jeweils Gruppen (A-C) von Batteriezellen (1 )  Battery cells (1), wherein each groups (A-C) of battery cells (1)
Messeinrichtungen (2A-2C) mit einer Datenübertragungseinrichtung zugeordnet sind, wobei das Batteriemodul (100) mindestens einen Master (5) mit einer Schnittstelle (6) zu einem Batteriemanagement-Steuergerät aufweist, wobei die  Measuring devices (2A-2C) are associated with a data transmission device, wherein the battery module (100) has at least one master (5) with an interface (6) to a battery management control unit, wherein the
Datenübertragungseinrichtung und der mindestens eine Master (5) optische  Data transmission device and the at least one master (5) optical
Übertragungsstrecken umfassen,  Include transmission links,
dadurch gekennzeichnet, dass  characterized in that
die Übertragungsstrecken zwischen den Messeinrichtungen (2A-2C) und dem Master (5) als optische Freiraumübertragung ausgebildet sind, wobei die  the transmission paths between the measuring devices (2A-2C) and the master (5) are designed as a free-space optical transmission, wherein the
Datenübertragungseinrichtungen derart ausgebildet sind, dass die Messeinrichtungen (2A-2C) direkt bidirektional mit dem Master (5) kommunizieren.  Data transmission devices are designed such that the measuring devices (2A-2C) communicate directly bidirectionally with the master (5).
8. Elektrisches Batteriemodul (100), wobei das Batteriemodul (100) eine Vielzahl von 8. Electrical battery module (100), wherein the battery module (100) a plurality of
Batteriezellen (1 ) aufweist, wobei jeweils Gruppen (A-C) von Batteriezellen (1 )  Battery cells (1), wherein each groups (A-C) of battery cells (1)
Messeinrichtungen (2A-2C) mit einer Datenübertragungseinrichtung zugeordnet sind, wobei das Batteriemodul (100) mindestens einen Master (5) mit einer Schnittstelle zu einem Batteriemanagement-Steuergerät aufweist, wobei die  Measuring devices (2A-2C) are associated with a data transmission device, wherein the battery module (100) has at least one master (5) with an interface to a battery management control unit, wherein the
Datenübertragungseinrichtung und der mindestens eine Master (5) optische  Data transmission device and the at least one master (5) optical
Übertragungsstrecken umfassen,  Include transmission links,
dadurch gekennzeichnet, dass  characterized in that
die Übertragungsstrecken zwischen den Messeinrichtungen (2A-2C) und dem Master (5) über einen gemeinsamen Lichtwellenleiter (10) erfolgen, wobei die Messeinrichtungen (2A-2C) und der Master (5) als vermaschtes optisches Netz konfiguriert sind.  the transmission paths between the measuring devices (2A-2C) and the master (5) via a common optical waveguide (10), wherein the measuring devices (2A-2C) and the master (5) are configured as a meshed optical network.
9. Elektrisches Batteriemodul (100) nach Anspruch 8, dadurch gekennzeichnet, dass die Messeinrichtungen (2A-2C) und der Master (5) als voll vermaschtes optisches Netz konfiguriert sind. 9. Electric battery module (100) according to claim 8, characterized in that the measuring devices (2A-2C) and the master (5) are configured as fully meshed optical network.
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WO2021246633A1 (en) * 2020-06-02 2021-12-09 주식회사 엘지에너지솔루션 Battery pack having optimization structure for wireless communication, and vehicle comprising same

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CN111465526A (en) 2020-07-28

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