WO2018036970A1 - Adapter for a battery management system, and battery management system - Google Patents

Adapter for a battery management system, and battery management system Download PDF

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Publication number
WO2018036970A1
WO2018036970A1 PCT/EP2017/071042 EP2017071042W WO2018036970A1 WO 2018036970 A1 WO2018036970 A1 WO 2018036970A1 EP 2017071042 W EP2017071042 W EP 2017071042W WO 2018036970 A1 WO2018036970 A1 WO 2018036970A1
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WO
WIPO (PCT)
Prior art keywords
battery management
cell monitoring
adapter
management unit
monitoring module
Prior art date
Application number
PCT/EP2017/071042
Other languages
German (de)
French (fr)
Inventor
Francesco CANICATTI
Jens FREYHOFF
Alexej GREILICH
Benjamin Schoening
Original Assignee
HELLA GmbH & Co. KGaA
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 HELLA GmbH & Co. KGaA filed Critical HELLA GmbH & Co. KGaA
Publication of WO2018036970A1 publication Critical patent/WO2018036970A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40013—Details regarding a bus controller
    • 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
    • B60L58/21—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 having the same nominal voltage
    • 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
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—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
    • H01M10/42—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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40208—Bus networks characterized by the use of a particular bus standard
    • H04L2012/40215—Controller Area Network CAN
    • 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

Definitions

  • the present invention relates to an adapter for a battery management system and a battery management system.
  • the known battery management systems have a battery management unit and at least one cell monitoring module.
  • the cell monitoring module monitors a battery cell or a plurality of battery cells of a battery, such as those used in electric vehicles or hybrid vehicles, with regard to their functionality and the state of charge.
  • the electrical signals detected by each battery cell by the at least one cell monitoring module are at least partially preprocessed in the cell monitoring module and forwarded by the cell monitoring module to the battery management unit for further processing.
  • further physical variables of the battery are recorded and processed in the battery management unit.
  • the battery monitoring unit usually works with a standardized, ie standardized, data protocol such as CAN, the data protocols of the respective manufacturers of the cell monitoring modules are used in the cell monitoring modules. Accordingly, the electrical data and / or electrical signals can not simply be forwarded from the at least one cell monitoring module to the battery monitoring unit because the data protocols are incompatible with one another.
  • the forwarding of the electrical data and / or electrical signals therefore takes place in the known battery management systems in two ways: On the one hand, a standardized interface is installed in the at least one cell monitoring module. This is, depending on the number of required for the battery cell monitoring cell monitoring modules, consuming and costly.
  • a proprietary interface is installed in the battery management unit, ie an interface which converts the data protocol used by the respective manufacturer of the cell monitoring module into the standardized data protocol used in the battery management unit.
  • the object of the present invention is to enable a data exchange between the at least one cell monitoring module and the battery management unit without having to adapt the cell monitoring module or the battery management unit.
  • An essential advantage of the invention lies in particular in that interfaces do not have to be installed in the cell monitoring module or in the battery management unit for the data and / or signal exchange required between the at least one cell monitoring module and the battery management unit. Especially with the high number of battery cells for vehicle batteries for example, this leads to a considerable simplification and thus to a considerable cost Reduction compared to the known from the prior art alternative to equip each cell monitoring module with an interface. In contrast to the further alternative, namely to install a proprietary interface in the battery management unit, the flexibility of the battery management unit is not impaired in the solution according to the invention. This is especially true when using a standardized transmission standard such as CAN.
  • the adapter according to the invention can be connected to the battery management unit and / or the at least one cell monitoring module merely by signal transmission by means of the system connection and / or the module connection.
  • the adapter to the battery management unit and / or the cell monitoring module corresponding mechanical coupling means. In this way, a stable and reliable mechanical and electrical connection between the adapter on the one hand and the battery management unit and / or the at least one cell monitoring module on the other side is ensured.
  • an advantageous development of the battery management system according to the invention provides that the adapter and the battery management unit and / or the cell monitoring module have mutually corresponding mechanical coupling means.
  • FIG. 1 An embodiment of a battery management system according to the invention with an adapter according to the invention.
  • the only Fig. Shows a battery management system 2 according to the invention for monitoring a vehicle battery, not shown.
  • the battery management system 2 has a battery management unit 4 and three cell monitoring units. on module 6.
  • the cell monitoring modules 6 are designed completely identical here. But this is not mandatory.
  • the battery management unit 4 the standardized transmission standard CAN, ie a standardized data protocol, is used.
  • the data protocol of the manufacturer of the cell monitoring modules 6, ie a proprietary data protocol in use.
  • the proprietary data protocol of cell monitoring modules 6 is not compatible with the CAN data protocol. Accordingly, it is not possible to process the electrical data and / or electrical signals of the cell monitoring modules 6 directly in the battery management unit 4.
  • the battery management system 2 has an adapter 8, with a module connection 8.1, a system connection 8.2 and a conversion unit 8.3.
  • the conversion unit 8.3 can be connected via the module connection 8.1 to one of the cell monitoring modules 6 in a data-transmitting and / or signal-transmitting manner.
  • the two other cell monitoring modules 6 are in turn indirectly via the aforementioned cell monitoring module 6 with the adapter 8 and thus with the conversion unit 8.3 signal-transmitting connectable.
  • the electrical data and / or electrical signals of these cell monitoring modules 6 are merely looped through by the cell monitoring module 6 that can be connected directly to the adapter 8.
  • the conversion unit 8.3 can be connected to the battery management unit 4 in a data-transmitting and / or signal-transmitting manner.
  • the conversion unit 8.3 of the adapter 8 is connected to the battery management unit 4 by means of the module connection 8.1 with the three cell monitoring modules 6 and by means of the system connection 8.2.
  • the electrical data and / or electrical signals from the three cell monitoring modules 6 in convertible for the battery management unit 4 electrical data and / or electrical signals can be converted. In this way it is possible to provide the electrical data and / or electrical signals from the three cell monitoring modules 6, which satisfy the manufacturer's proprietary data protocol of the cell monitoring modules 6 used, to the battery management unit 4 in the CAN data protocol. Neither an adaptation of the battery management unit 4 to the cell monitoring modules 6 nor the cell monitoring modules 6 to the battery management unit 4 is required.
  • the adapter 8 according to the invention and the cell monitoring modules 6 of the exemplary embodiment which are completely identical to one another have the mechanical coupling means formed corresponding to one another; these are not shown in the figure. Accordingly, the adapter 8 and the individual cell monitoring modules 6 can be connected to one another mechanically, namely in the manner shown in the image plane of FIG. For this purpose, it is sufficient if the cell monitoring modules 6 are of identical construction with respect to the mechanical and electrical interfaces.
  • the internal structure that is, for example, a circuit carrier and electrical components arranged thereon, can be designed differently.
  • the invention is not limited to the present embodiment.
  • the adapter according to the invention and the battery management unit have alternatively or additionally to the cell monitoring modules mutually corresponding mechanical coupling means.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention relates to an adapter (8) for a battery management system (2) comprising a battery management unit (4) and at least one cell monitoring module (6) and to a battery management system (2). The aim of the invention is to allow a data exchange between the at least one cell monitoring module (6) and the battery management unit (4) without having to adapt the cell monitoring module (6) or the battery management unit (4). This is achieved in that the adapter (8) has at least one module connection (8.1), a system connection (8.2), and a conversion unit (8.3), wherein the conversion unit (8.3) can be connected to the cell monitoring module (6) via the module connection (8.1) and to the battery management unit (4) via the system connection (8.2) so as to transmit data and/or signals, and electric data and/or electric signals from the cell monitoring module (6) can be converted into electric data and/or electric signals which can be processed by the battery management unit (4) by means of the conversion unit (8.3).

Description

Adapter für ein Batteriemanagementsystem und Batteriemanagementsystem  Adapter for a battery management system and battery management system
Beschreibung description
Die vorliegende Erfindung bezieht sich auf einen Adapter für ein Batteriemanagementsystem und ein Batteriemanagementsystem. The present invention relates to an adapter for a battery management system and a battery management system.
Derartige Batteriemanagementsysteme sind aus dem Stand der Technik in zahlreichen Ausführungsvarianten bereits bekannt. Die bekannten Batteriemanagementsysteme weisen eine Batteriemanagementeinheit und mindestens ein Zellüberwachungsmodul auf. Mit dem Zellüberwachungsmodul wird eine Batteriezelle oder mehrere Batteriezellen einer Batterie, wie sie beispielsweise bei Elektrofahrzeugen oder Hybridfahrzeugen verwendet wird, hinsichtlich deren Funktionstüchtigkeit und des Ladzustands überwacht. Die von jeder Batteriezelle durch das mindestens eine Zellüberwachungsmodul erfassten elektrischen Signale werden in dem Zellüberwachungsmodul zumindest teilweise vorverarbeitet und von dem Zellüberwachungsmodul an die Batteriemanagementeinheit zur weiteren Verarbeitung weitergeleitet. In der Batteriemanagementeinheit werden neben den elektrischen Daten und/oder elektrischen Signalen des mindestens einen Zellüberwachungsmoduls noch weitere physikalische Größen der Batterie erfasst und verarbeitet. Such battery management systems are already known from the prior art in numerous variants. The known battery management systems have a battery management unit and at least one cell monitoring module. The cell monitoring module monitors a battery cell or a plurality of battery cells of a battery, such as those used in electric vehicles or hybrid vehicles, with regard to their functionality and the state of charge. The electrical signals detected by each battery cell by the at least one cell monitoring module are at least partially preprocessed in the cell monitoring module and forwarded by the cell monitoring module to the battery management unit for further processing. In addition to the electrical data and / or electrical signals of the at least one cell monitoring module, further physical variables of the battery are recorded and processed in the battery management unit.
Dabei werden in der Batterieüberwachungseinheit und dem mindestens einen Zellüberwachungsmodul voneinander verschiedene Datenprotokolle verwendet. Während die Batterieüberwachungseinheit üblicherweise mit einem standardisierten, also genormten, Datenprotokoll wie beispielsweise CAN arbeitet, werden in den Zellüberwachungsmodulen die Datenprotokolle der jeweiligen Hersteller der Zellüberwachungsmodule verwendet. Entsprechend können die elektrischen Daten und/oder elektrischen Signale nicht einfach von dem mindestens einen Zellüberwachungsmodul an die Batterieüberwachungseinheit weitergeleitet werden, da die Datenprotokolle zueinander nicht kompatibel sind. Die Weiterleitung der elektrischen Daten und/oder elektrischen Signale erfolgt bei den bekannten Batteriemanagementsystemen deshalb auf zweierlei Weise: Zum einen wird eine standardisierte Schnittstelle in dem mindestens einen Zellüberwachungsmodul verbaut. Dies ist, je nach Anzahl der für die Batteriezellenüberwachung erforderlichen Zellüberwachungsmodule, aufwendig und kostenintensiv. Zum anderen wird in der Batteriemanagementeinheit eine proprietäre Schnittstelle verbaut, also eine Schnittstelle, die das von dem jeweiligen Hersteller des Zellüberwachungsmoduls verwendete Datenprotokoll in das in der Batteriemanagementeinheit verwendete standardisierte Datenprotokoll umwandelt. Dies Lösung verringert die Flexibilität der Batteriemanagementeinheit; sollten beispielsweise Zellüberwachungsmodule ausgetauscht werden und sich dadurch das auf Seite der Zellüberwachungsmodule verwendete Datenprotokoll ändern, müsste die proprietäre Schnittstelle der Batteriemanagementeinheit angepasst werden. In this case, different data protocols are used in the battery monitoring unit and the at least one cell monitoring module. While the battery monitoring unit usually works with a standardized, ie standardized, data protocol such as CAN, the data protocols of the respective manufacturers of the cell monitoring modules are used in the cell monitoring modules. Accordingly, the electrical data and / or electrical signals can not simply be forwarded from the at least one cell monitoring module to the battery monitoring unit because the data protocols are incompatible with one another. The forwarding of the electrical data and / or electrical signals therefore takes place in the known battery management systems in two ways: On the one hand, a standardized interface is installed in the at least one cell monitoring module. This is, depending on the number of required for the battery cell monitoring cell monitoring modules, consuming and costly. On the other hand, a proprietary interface is installed in the battery management unit, ie an interface which converts the data protocol used by the respective manufacturer of the cell monitoring module into the standardized data protocol used in the battery management unit. This solution reduces the flexibility of the battery management unit; For example, if cell monitoring modules were to be replaced, thereby changing the data protocol used by the cell monitoring modules, then the proprietary interface of the battery management unit would have to be adapted.
Hier setzt die vorliegende Erfindung an. This is where the present invention begins.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Datenaustausch zwischen dem mindestens einen Zellüberwachungsmodul und der Batteriemanagementeinheit zu ermöglichen, ohne das Zellüberwachungsmodul oder die Batteriemanagementeinheit anpassen zu müssen. The object of the present invention is to enable a data exchange between the at least one cell monitoring module and the battery management unit without having to adapt the cell monitoring module or the battery management unit.
Diese Aufgabe wird durch einen Adapter für ein Batteriemanagementsystem mit den Merkmalen des Anspruchs 1 und ein Batteriemanagementsystem mit den Merkmalen des Anspruchs 4 gelöst. Die Unteransprüche betreffen vorteilhafte Weiterbildungen der Erfindung. This object is achieved by an adapter for a battery management system having the features of claim 1 and a battery management system having the features of claim 4. The subclaims relate to advantageous developments of the invention.
Ein wesentlicher Vorteil der Erfindung liegt insbesondere darin, dass für den zwischen dem mindestens einen Zellüberwachungsmodul und der Batteriemanagementeinheit erforderlichen Daten- und/oder Signalaustausch weder in dem Zellüberwachungsmodul noch in der Batteriemanagementeinheit Schnittstellen verbaut werden müssen. Gerade bei der hohen Anzahl von Batteriezellen für beispielsweise Fahrzeugbatterien führt dies zu einer erheblichen Vereinfachung und damit zu einer erheblichen Kosten- reduzierung im Vergleich zu der aus dem Stand der Technik bekannten Alternative, jedes Zellüberwachungsmodul mit einer Schnittstelle auszustatten. Im Unterschied zu der weiteren Alternative, nämlich in der Batteriemanagementeinheit eine proprietäre Schnittstelle zu verbauen, ist bei der erfindungsgemäßen Lösung die Flexibilität der Batteriemanagementeinheit nicht beeinträchtigt. Dies gilt insbesondere bei der Verwendung eines genormten Übertragungsstandards wie beispielsweise CAN. An essential advantage of the invention lies in particular in that interfaces do not have to be installed in the cell monitoring module or in the battery management unit for the data and / or signal exchange required between the at least one cell monitoring module and the battery management unit. Especially with the high number of battery cells for vehicle batteries for example, this leads to a considerable simplification and thus to a considerable cost Reduction compared to the known from the prior art alternative to equip each cell monitoring module with an interface. In contrast to the further alternative, namely to install a proprietary interface in the battery management unit, the flexibility of the battery management unit is not impaired in the solution according to the invention. This is especially true when using a standardized transmission standard such as CAN.
Grundsätzlich kann der erfindungsgemäße Adapter mit der Batteriemanagementeinheit und/oder dem mindestens einen Zellüberwachungsmodul lediglich signalübertragend mittels des Systemanschlusses und/oder des Modulanschlusses verbunden sein. Vorteilhafterweise weist der Adapter zu der Batteriemanagementeinheit und/oder dem Zellüberwachungsmodul korrespondierende mechanische Kupplungsmittel auf. Auf diese Weise ist eine stabile und funktionssichere mechanische und elektrische Verbindung zwischen dem Adapter auf der einen Seite und der Batteriemanagementeinheit und/oder dem mindestens einen Zellüberwachungsmodul auf der anderen Seite gewährleistet. In principle, the adapter according to the invention can be connected to the battery management unit and / or the at least one cell monitoring module merely by signal transmission by means of the system connection and / or the module connection. Advantageously, the adapter to the battery management unit and / or the cell monitoring module corresponding mechanical coupling means. In this way, a stable and reliable mechanical and electrical connection between the adapter on the one hand and the battery management unit and / or the at least one cell monitoring module on the other side is ensured.
Entsprechend sieht eine vorteilhafte Weiterbildung des erfindungsgemäßen Batteriemanagementsystems vor, dass der Adapter und die Batteriemanagementeinheit und/oder das Zellüberwachungsmodul zueinander korrespondierende mechanische Kupplungsmittel aufweisen. Accordingly, an advantageous development of the battery management system according to the invention provides that the adapter and the battery management unit and / or the cell monitoring module have mutually corresponding mechanical coupling means.
Anhand der beigefügten, grob schematischen Zeichnung wird die Erfindung nachfolgend näher erläutert. Dabei zeigt die einzige Reference to the accompanying, rough schematic drawing, the invention will be explained in more detail below. The only one shows
Fig. ein Ausführungsbeispiel eines erfindungsgemäßen Batteriemanagementsystems mit einem erfindungsgemäßen Adapter. Fig. An embodiment of a battery management system according to the invention with an adapter according to the invention.
Die einzige Fig. zeigt ein erfindungsgemäßes Batteriemanagementsystem 2 zur Überwachung einer nicht dargestellten Fahrzeugbatterie. Hierfür weist das Batteriemanagementsystem 2 eine Batteriemanagementeinheit 4 und drei Zellüberwa- chungsmodule 6 auf. Die Zellüberwachungsmodule 6 sind hier vollständig baugleich ausgebildet. Dies ist aber nicht zwingend erforderlich. In der Batteriemanagementeinheit 4 wird der genormte Übertragungsstandard CAN, also ein standardisiertes Datenprotokoll, verwendet. Im Unterschied dazu ist in den drei Zellüberwachungsmodulen 6 das Datenprotokoll des Herstellers der Zellüberwachungsmodule 6, also ein proprietäres Datenprotokoll, im Einsatz. Das proprietäre Datenprotokoll der Zellüberwachungsmodule 6 ist mit dem CAN-Datenprotokoll nicht kompatibel. Entsprechend ist es nicht möglich, die elektrischen Daten und/oder elektrischen Signale der Zellüberwachungsmodule 6 direkt in der Batteriemanagementeinheit 4 zu verarbeiten. The only Fig. Shows a battery management system 2 according to the invention for monitoring a vehicle battery, not shown. For this purpose, the battery management system 2 has a battery management unit 4 and three cell monitoring units. on module 6. The cell monitoring modules 6 are designed completely identical here. But this is not mandatory. In the battery management unit 4, the standardized transmission standard CAN, ie a standardized data protocol, is used. In contrast, in the three cell monitoring modules 6, the data protocol of the manufacturer of the cell monitoring modules 6, ie a proprietary data protocol, in use. The proprietary data protocol of cell monitoring modules 6 is not compatible with the CAN data protocol. Accordingly, it is not possible to process the electrical data and / or electrical signals of the cell monitoring modules 6 directly in the battery management unit 4.
Deshalb weist das Batteriemanagementsystem 2 einen Adapter 8, mit einem Modu- lanschluss 8.1 , einem Systemanschluss 8.2 und einer Konvertierungseinheit 8.3 auf. Die Konvertierungseinheit 8.3 ist über den Modulanschluss 8.1 mit einem der Zellüberwachungsmodule 6 daten- und/oder signalübertragend verbindbar. Die beiden anderen Zellüberwachungsmodule 6 sind wiederum mittelbar über das vorgenannte Zellüberwachungsmodul 6 mit dem Adapter 8 und damit mit der Konvertierungseinheit 8.3 signalübertragend verbindbar. In der in der Fig. dargestellten Verbindungslage des Batteriemanagementsystems 2 werden die elektrischen Daten und/oder elektrischen Signale dieser Zellüberwachungsmodule 6 durch das unmittelbar an den Adapter 8 anschließbare Zellüberwachungsmodul 6 lediglich durchgeschleift. Therefore, the battery management system 2 has an adapter 8, with a module connection 8.1, a system connection 8.2 and a conversion unit 8.3. The conversion unit 8.3 can be connected via the module connection 8.1 to one of the cell monitoring modules 6 in a data-transmitting and / or signal-transmitting manner. The two other cell monitoring modules 6 are in turn indirectly via the aforementioned cell monitoring module 6 with the adapter 8 and thus with the conversion unit 8.3 signal-transmitting connectable. In the connection position of the battery management system 2 shown in the FIGURE, the electrical data and / or electrical signals of these cell monitoring modules 6 are merely looped through by the cell monitoring module 6 that can be connected directly to the adapter 8.
Über den Systemanschluss 8.2 ist die Konvertierungseinheit 8.3 mit der Batteriemanagementeinheit 4 datenübertragend und/oder signalübertragend verbindbar. In der in der Fig. dargestellten Verbindungslage des Batteriemanagementsystems 2 ist die Konvertierungseinheit 8.3 des Adapters 8 mittels des Modulanschlusses 8.1 mit den drei Zellüberwachungsmodulen 6 und mittels des Systemanschlusses 8.2 mit der Batteriemanagementeinheit 4 daten- und signalübertragend verbunden. Via the system connection 8.2, the conversion unit 8.3 can be connected to the battery management unit 4 in a data-transmitting and / or signal-transmitting manner. In the connection position of the battery management system 2 shown in the FIGURE, the conversion unit 8.3 of the adapter 8 is connected to the battery management unit 4 by means of the module connection 8.1 with the three cell monitoring modules 6 and by means of the system connection 8.2.
In der Konvertierungseinheit 8.3 des Adapters 8 sind die elektrische Daten und/oder elektrische Signale von den drei Zellüberwachungsmodulen 6 in für die Batteriemanagementeinheit 4 verarbeitbare elektrische Daten und/oder elektrische Signale umwandelbar. Auf diese Weise ist es möglich, die elektrischen Daten und/oder elektrischen Signale von den drei Zellüberwachungsmodulen 6, die dem proprietären Datenprotokoll des Herstellers der verwendeten Zellüberwachungsmodule 6 genügen, der Batteriemanagementeinheit 4 in dem CAN-Datenprotokoll zur Verfügung zu stellen. Weder ist eine Anpassung der Batteriemanagementeinheit 4 an die Zellüberwachungsmodule 6 noch der Zellüberwachungsmodule 6 an die Batteriemanagementeinheit 4 erforderlich. In the conversion unit 8.3 of the adapter 8, the electrical data and / or electrical signals from the three cell monitoring modules 6 in convertible for the battery management unit 4 electrical data and / or electrical signals can be converted. In this way it is possible to provide the electrical data and / or electrical signals from the three cell monitoring modules 6, which satisfy the manufacturer's proprietary data protocol of the cell monitoring modules 6 used, to the battery management unit 4 in the CAN data protocol. Neither an adaptation of the battery management unit 4 to the cell monitoring modules 6 nor the cell monitoring modules 6 to the battery management unit 4 is required.
Sollte ein Austausch von Zellüberwachungsmodulen 6 erforderlich sein und sich beispielsweise dadurch eine Änderung in dem proprietären Datenprotokoll ergeben, genügt nun die Anpassung des erfindungsgemäßen Adapters 8. Eine Anpassung der Batteriemanagementeinheit 4 ist nicht erforderlich. Die hohe Flexibilität der Batteriemanagementeinheit 4, beispielsweise aufgrund des darin verwendeten genormten Übertragungsstandards, bleibt erhalten. Das erfindungsgemäße Batteriemanagementsystem 2 ist somit hochgradig flexibel und kann daher beispielsweise für verschiedene Endanwendungen gleichermaßen eingesetzt werden. Auch ist es durch die Erfindung möglich, bestehende Batteriemanagementsysteme mit einem erfindungsgemäßen Adapter 8 nachzurüsten und somit die Vorteile der Erfindung zu nutzen. Should it be necessary to exchange cell monitoring modules 6 and, for example, result in a change in the proprietary data protocol, it is now sufficient to adapt the adapter 8 according to the invention. An adaptation of the battery management unit 4 is not necessary. The high flexibility of the battery management unit 4, for example due to the standardized transmission standard used therein, is maintained. The battery management system 2 according to the invention is therefore highly flexible and can therefore be used equally for example for various end applications. It is also possible by the invention to retrofit existing battery management systems with an adapter 8 according to the invention and thus to take advantage of the invention.
Darüber hinaus weisen der erfindungsgemäße Adapter 8 und die untereinander vollständig baugleichen Zellüberwachungsmodule 6 des Ausführungsbeispiels zueinander korrespondierend ausgebildete mechanische Kupplungsmittel auf; diese sind in der Fig. nicht dargestellt. Entsprechend lassen sich der Adapter 8 und die einzelnen Zellüberwachungsmodule 6 untereinander mechanisch verbinden, nämlich in der in der Bildebene der Fig. dargestellten Weise. Hierfür ist es ausreichend, wenn die Zellüberwachungsmodule 6 hinsichtlich der mechanischen und elektrischen Schnittstellen zueinander baugleich ausgebildet sind. Der innere Aufbau, also beispielsweise ein Schaltungsträger und darauf angeordnete elektrische Bauteile, kann unterschiedlich gestaltet sein. Die Erfindung ist nicht auf das vorliegende Ausführungsbeispiel begrenzt. Beispielsweise ist es denkbar, dass der erfindungsgemäße Adapter und die Batteriemanagementeinheit alternativ oder zusätzlich zu den Zellüberwachungsmodulen zueinander korrespondierende mechanische Kupplungsmittel aufweisen. In addition, the adapter 8 according to the invention and the cell monitoring modules 6 of the exemplary embodiment which are completely identical to one another have the mechanical coupling means formed corresponding to one another; these are not shown in the figure. Accordingly, the adapter 8 and the individual cell monitoring modules 6 can be connected to one another mechanically, namely in the manner shown in the image plane of FIG. For this purpose, it is sufficient if the cell monitoring modules 6 are of identical construction with respect to the mechanical and electrical interfaces. The internal structure, that is, for example, a circuit carrier and electrical components arranged thereon, can be designed differently. The invention is not limited to the present embodiment. For example, it is conceivable that the adapter according to the invention and the battery management unit have alternatively or additionally to the cell monitoring modules mutually corresponding mechanical coupling means.
Neben dem genormten Übertragungsstandard CAN sind auch andere dem Fachmann bekannte und geeignete genormte Übertragungsstandards möglich. In addition to the standardized transmission standard CAN, other standardized transmission standards known and suitable to the person skilled in the art are also possible.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
2 Batteriemanagementsystem2 battery management system
4 Batteriemanagementeinheit4 battery management unit
6 Zellüberwachungsmodul6 cell monitoring module
8 Adapter 8 adapters
8.1 Modulanschluss  8.1 Module connection
8.2 Systemanschluss  8.2 System connection
8.3 Konvertierungseinheit  8.3 conversion unit

Claims

Patentansprüche claims
1 . Adapter (8) für ein Batteriemanagementsystem (2) mit einer Batteriemanagementeinheit (4) und mindestens einem Zellüberwachungsmodul (6), mit mindestens einem Modulanschluss (8.1 ), einem Systemanschluss (8.2) und einer Konvertierungseinheit (8.3), wobei die Konvertierungseinheit (8.3) über den Modulanschluss (8.1 ) mit dem Zellüberwachungsmodul (6) und über den Systemanschluss (8.2) mit der Batteriemanagementeinheit (4) datenübertragend und/oder signalübertragend verbindbar ist und elektrische Daten und/oder elektrische Signale von dem Zellüberwachungsmodul (6) mittels der Konvertierungseinheit (8.3) in für die Batteriemanagementeinheit (4) verarbeitbare elektrische Daten und/oder elektrische Signale umwandelbar sind. 1 . Adapter (8) for a battery management system (2) with a battery management unit (4) and at least one cell monitoring module (6), with at least one module connection (8.1), a system connection (8.2) and a conversion unit (8.3), wherein the conversion unit (8.3) via the module connection (8.1) to the cell monitoring module (6) and via the system connection (8.2) to the battery management unit (4) data transmitting and / or signal transmitting connectable and electrical data and / or electrical signals from the cell monitoring module (6) by means of the conversion unit ( 8.3) in the battery management unit (4) processable electrical data and / or electrical signals are convertible.
2. Adapter (8) nach Anspruch 1 , 2. Adapter (8) according to claim 1,
dadurch gekennzeichnet,  characterized,
dass mittels der Konvertierungseinheit (8.3) die elektrischen Daten und/oder elektrischen Signale des Zellüberwachungsmoduls (6) in elektrische Daten und/oder elektrische Signale umwandelbar sind, die einem genormten Übertragungsstandard, insbesondere CAN, genügen.  in that by means of the conversion unit (8.3) the electrical data and / or electrical signals of the cell monitoring module (6) can be converted into electrical data and / or electrical signals which satisfy a standardized transmission standard, in particular CAN.
3. Adapter (8) nach Anspruch 1 oder 2, 3. adapter (8) according to claim 1 or 2,
dadurch gekennzeichnet,  characterized,
dass der Adapter (8) zu der Batteriemanagementeinheit (4) und/oder dem Zellüberwachungsmodul (6) korrespondierende mechanische Kupplungsmittel aufweist.  the adapter (8) has mechanical coupling means corresponding to the battery management unit (4) and / or the cell monitoring module (6).
4. Batteriemanagementsystem (2) mit einer Batteriemanagementeinheit (4) und mindestens einem Zellüberwachungsmodul (6), 4. battery management system (2) with a battery management unit (4) and at least one cell monitoring module (6),
dadurch gekennzeichnet,  characterized,
dass das Batteriemanagementsystem (2) einen Adapter (8) gemäß einem der Ansprüche 1 bis 3 aufweist. in that the battery management system (2) has an adapter (8) according to a of claims 1 to 3.
5. Batteriemanagementsystem (2) nach Anspruch 4, 5. Battery management system (2) according to claim 4,
dadurch gekennzeichnet,  characterized,
dass der Adapter (8) und die Batteriemanagementeinheit (4) und/oder das Zellüberwachungsmodul (6) zueinander korrespondierende mechanische Kupplungsmittel aufweisen.  the adapter (8) and the battery management unit (4) and / or the cell monitoring module (6) have mutually corresponding mechanical coupling means.
PCT/EP2017/071042 2016-08-25 2017-08-21 Adapter for a battery management system, and battery management system WO2018036970A1 (en)

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