DE102012203017A1 - System for managing high voltage battery system mounted in vehicle, has control device to monitor voltages to individual battery cells of battery modules, and monitoring device to monitor electrical connection between battery modules - Google Patents
System for managing high voltage battery system mounted in vehicle, has control device to monitor voltages to individual battery cells of battery modules, and monitoring device to monitor electrical connection between battery modules Download PDFInfo
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- DE102012203017A1 DE102012203017A1 DE201210203017 DE102012203017A DE102012203017A1 DE 102012203017 A1 DE102012203017 A1 DE 102012203017A1 DE 201210203017 DE201210203017 DE 201210203017 DE 102012203017 A DE102012203017 A DE 102012203017A DE 102012203017 A1 DE102012203017 A1 DE 102012203017A1
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- 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
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- 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
- B60L58/19—Switching between serial connection and parallel connection of battery modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/22—Balancing the charge of battery modules
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
-
- 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
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/44—Control modes by parameter estimation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
Description
Die Erfindung betrifft ein Batteriemanagementsystem zum Überwachen eines Batteriesystems, insbesondere eines Hochvolt-Batteriesystems, das mehrere miteinander elektrisch verschaltete Batteriemodule aufweist, die jeweils mehrere miteinander elektrisch verschaltete Batteriezellen umfassen, wobei das Batteriemanagementsystem mindestens eine Steuer- und/oder Regeleinrichtung zur Überwachung der Spannungen an den einzelnen Batteriezellen oder Gruppen von parallelgeschalteten Batteriezellen der Batteriemodule aufweist. Die Erfindung betrifft weiterhin ein Batteriegesamtsystem mit einem Batteriemanagementsystem und ein Verfahren zum Überwachen eines Batteriesystems.The invention relates to a battery management system for monitoring a battery system, in particular a high-voltage battery system having a plurality of electrically interconnected battery modules, each comprising a plurality of electrically interconnected battery cells, wherein the battery management system at least one control and / or regulating device for monitoring the voltages to the individual battery cells or groups of parallel-connected battery cells of the battery modules. The invention further relates to a battery overall system with a battery management system and a method for monitoring a battery system.
Stand der TechnikState of the art
Batteriesysteme mit mehreren miteinander elektrisch verschalteten Batteriemodulen, die ihrerseits jeweils mehrere miteinander elektrisch verschaltete Batteriezellen umfassen, sind zum Beispiel als Batteriepacks von sogenannten Hochvolt-Batteriesystemen bekannt. Derartige Hochvolt-Batteriesysteme finden unter anderem als elektrische Energiespeicher bei Fahrzeugen mit Elektro- oder Hybridantrieb Anwendung. Unter dem Begriff Batterie (Batteriezelle, Batteriemodul, Batteriesystem, etc.) ist insbesondere eine wiederaufladbare Batterie (ein Akkumulator beziehungsweise eine Sekundärzelle) zu verstehen. Zur Überwachung und Regelung eines nachladbaren Batteriesystems, d.h. eines Akkumulatorsystems wird beispielsweise ein Batteriemanagementsystem (BMS) verwendet. Die mindestens eine Steuer- und/oder Regeleinrichtung zur Überwachung der Spannungen an den Batteriezellen der Batteriemodule dieses Batteriemanagement-Systems ist zum Beispiel als Modulcontroller beziehungsweise als CSC (CSC: Cell Supervisory Controller) des Batteriemanagement-Systems bekannt, die zur Überwachung und Regelung auf Modulebene genutzt wird. Battery systems with a plurality of electrically interconnected battery modules, which in turn each comprise a plurality of electrically interconnected battery cells, are known for example as battery packs of so-called high-voltage battery systems. Such high-voltage battery systems are used, inter alia, as electrical energy storage in vehicles with electric or hybrid drive application. The term battery (battery cell, battery module, battery system, etc.) is to be understood in particular as a rechargeable battery (an accumulator or a secondary cell). To monitor and control a rechargeable battery system, i. an accumulator system, for example, a battery management system (BMS) is used. The at least one control and / or regulating device for monitoring the voltages on the battery cells of the battery modules of this battery management system is known, for example, as a module controller or CSC (CSC: Cell Supervisory Controller) of the battery management system, which is used for monitoring and control at the module level is being used.
Offenbarung der ErfindungDisclosure of the invention
Das erfindungsgemäße Batteriemanagementsystem mit den in Anspruch 1 genannten Merkmalen, das erfindungsgemäße Batteriegesamtsystem mit den in Anspruch 9 genannten Merkmalen und das Überwachungsverfahren mit den in Anspruch 11 genannten Merkmalen bieten den Vorteil, dass das gesamte Batteriesystem mittels eines Batteriemanagementsystems überwachbar ist, das seinerseits Modulcontroller zur Überwachung der Spannungen an den Batteriezellen der Batteriemodule nutzt.The battery management system according to the invention with the features mentioned in claim 1, the battery overall system according to the invention with the features mentioned in claim 9 and the monitoring method with the features mentioned in claim 11 offer the advantage that the entire battery system can be monitored by means of a battery management system, which in turn module controller for monitoring uses the voltages on the battery cells of the battery modules.
Das erfindungsbemäße Batteriemanagementsystem weist weiterhin mindestens eine Überwachungseinrichtung zur Überwachung von mindestens einer elektrischen Verbindung zwischen den Batteriemodulen bei deren elektrischer Verschaltung auf. Diese mindestens eine Überwachungseinrichtung ist entweder (i) in der Steuer- und/oder Regeleinrichtung oder in mindestens einer der mehreren Steuer- und/oder Regeleinrichtungen implementiert oder (ii) eine von der mindestens einen Steuer- und/oder Regeleinrichtung separate Überwachungseinrichtung. Durch die Überwachung der mindestens einen elektrischen Verbindung zwischen den Batteriemodulen werden nicht nur modulinterne Betriebsgrößen überwacht, gesteuert und geregelt sowie modulinterne Funktionseinschränkungen, Funktionsverluste und Fehlfunktionen erkannt, angezeigt und/oder kompensiert, sondern auch modulübergreifende Funktionseinschränkungen, Funktionsverluste und Fehlfunktionen erkannt, angezeigt und/oder kompensiert. Die Batteriezellen sind insbesondere wiederaufladbare Batteriezellen (Akkumulatorzellen).The battery management system according to the invention furthermore has at least one monitoring device for monitoring at least one electrical connection between the battery modules in their electrical connection. This at least one monitoring device is either (i) implemented in the control and / or regulating device or in at least one of the plurality of control and / or regulating devices or (ii) is a monitoring device separate from the at least one control and / or regulating device. By monitoring the at least one electrical connection between the battery modules, not only module-internal operating variables are monitored, controlled and regulated, and module-internal functional restrictions, function losses and malfunctions are detected, displayed and / or compensated, but also module-spanning functional limitations, function losses and malfunctions are identified, displayed and / or displayed compensated. The battery cells are in particular rechargeable battery cells (accumulator cells).
Die mindestens eine Steuer- und/oder Regeleinrichtung zur Überwachung der Spannungen an den Batteriezellen der Batteriemodule dieses Batteriemanagement-Systems sind zum Beispiel als Modulcontroller beziehungsweise als CSC (CSC: Cell Supervisory Controller) des Batteriemanagement-Systems bekannt, die zur Überwachung und Regelung auf Modulebene genutzt werden. Die mindestens eine Steuer- und/oder Regeleinrichtung zur Überwachung der Spannungen an den Batteriezellen der Batteriemodule ist bevorzugt eine Steuer- und/oder Regeleinrichtung zur Überwachung der Spannungen und anderer Kenngrößen der Batteriezellen der Batteriemodule. Insbesondere ist vorgesehen, dass je eine Steuer- und/oder Regeleinrichtung die Spannungen an den Batteriezellen eines ihr zugeordneten Batteriemoduls überwacht.The at least one control and / or regulating device for monitoring the voltages on the battery cells of the battery modules of this battery management system are known, for example, as a module controller or as CSC (CSC: Cell Supervisory Controller) of the battery management system for monitoring and control at the module level be used. The at least one control and / or regulating device for monitoring the voltages on the battery cells of the battery modules is preferably a control and / or regulating device for monitoring the voltages and other characteristics of the battery cells of the battery modules. In particular, it is provided that each control and / or regulating device monitors the voltages on the battery cells of a battery module assigned to it.
Das Batteriesystem ist insbesondere ein Hochvolt-Batteriesystem mit einer Gesamtspannung von mehr als 80 Volt, insbesondere von mehreren hundert Volt, wie es als Batterie-Pack in Fahrzeugen mit Elektro- oder Hybridantrieb Verwendung findet. The battery system is in particular a high-voltage battery system with a total voltage of more than 80 volts, in particular of several hundred volts, as it is used as a battery pack in vehicles with electric or hybrid drive.
Insbesondere weist die mindestens eine elektrische Verbindung zwischen den Batteriemodulen mindestens ein Verbindungselement (einen Modulverbinder) auf. Dieses Verbindungselement ist zum Beispiel eine Leitung, die die äußeren Kontakte der Module innerhalb des Batteriesystems verschaltet. Im einfachsten Fall wird die elektrische Verbindung zwischen zwei Modulen durch das Verbindungselement und dessen jeweiligem elektrischen Kontakt zu den durch dieses Element verbundenen Modulen hergestellt.In particular, the at least one electrical connection between the battery modules has at least one connecting element (a module connector). This connection element is, for example, a line which connects the outer contacts of the modules within the battery system. In the simplest case, the electrical connection between two modules is made by the connecting element and its respective electrical contact with the modules connected by this element.
Mit Vorteil ist in einer bevorzugten Ausgestaltung der Erfindung vorgesehen, dass die Überwachungseinrichtung eine Messvorrichtung zur Messung des aktuellen Spannungsabfalls über der elektrischen Verbindung zwischen den Batteriemodulen oder eines mit diesem aktuellen Spannungsabfall zusammenhängenden Kennwertes der elektrischen Verbindung aufweist. Ein solcher Kennwert ist beispielsweise der Übergangswiderstand zwischen den Anschlüssen der Batteriemodule.Advantageously, it is provided in a preferred embodiment of the invention that the monitoring device is a measuring device for measuring the current voltage drop across the having electrical connection between the battery modules or one associated with this current voltage drop characteristic of the electrical connection. Such a characteristic value is, for example, the contact resistance between the terminals of the battery modules.
In einer weiteren bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass die Überwachungseinrichtung eingerichtet ist, einen Vergleich zwischen dem aktuellen Spannungsabfall über der elektrischen Verbindung oder dem von diesem aktuellen Spannungsabfall abhängigen Wert mit einem entsprechenden Grenzwert durchzuführen. Die Überwachungseinrichtung wertet durch den Vergleich somit stets aktuelle Kennwerte (aktuelle Spannung, aktueller Widerstand, etc.) aus.In a further preferred embodiment of the invention, it is provided that the monitoring device is set up to carry out a comparison between the current voltage drop across the electrical connection or the value dependent on this current voltage drop with a corresponding limit value. The monitoring device thus evaluates by the comparison always current characteristics (current voltage, current resistance, etc.).
Gemäß einer vorteilhaften Weiterbildung der Erfindung weist die Überwachungseinrichtung einen Speicher zum Aufzeichnen des zeitlichen Verlaufs der gemessenen Kennwerte auf. Die Überwachung ist somit nicht auf den jeweils aktuellen wert beschränkt, sondern kann die zeitliche Dynamik berücksichtigen.According to an advantageous development of the invention, the monitoring device has a memory for recording the time profile of the measured characteristic values. The monitoring is thus not limited to the current value, but can take into account the temporal dynamics.
Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung ist die Überwachungseinrichtung zur Extrapolation des zeitlichen Verlaufs der gemessenen Kennwerte eingerichtet. Die Überwachungseinrichtung kann durch die Extrapolation des zeitlichen Verlaufs der Kennwerte eine zukünftige Entwicklung der Qualität der Verbindung zwischen den Batteriemodulen abschätzen.According to a further advantageous embodiment of the invention, the monitoring device is set up to extrapolate the time profile of the measured characteristic values. The monitoring device can estimate the future development of the quality of the connection between the battery modules by extrapolating the time characteristic of the characteristic values.
Gemäß einer weiteren vorteilhaften Weiterbildung der Erfindung ist vorgesehen, dass die Überwachungseinrichtung ein Modell, insbesondere ein mathematisches Modell, der mindestens einen elektrischen Verbindung aufweist. Insbesondere ist dabei vorgesehen, dass die Überwachungseinrichtung eingerichtet ist, einen Vergleich zwischen dem zeitlichen Verlauf der Messwerte mit einem entsprechenden Modell-Verlauf durchzuführen.According to a further advantageous development of the invention, it is provided that the monitoring device has a model, in particular a mathematical model, which has at least one electrical connection. In particular, it is provided that the monitoring device is set up to carry out a comparison between the time profile of the measured values and a corresponding model profile.
Gemäß noch einer weiteren vorteilhaften Weiterbildung der Erfindung ist vorgesehen, dass die Überwachungseinrichtung einen Datenspeicher mit den Daten von Kennlinien des Spannungsabfalls und/oder des mindestens einen anderen Kennwerts aufweist. Dieser Datenspeicher ist insbesondere der zuvor genannte Speicher zum Aufzeichnen des zeitlichen Verlaufs der gemessenen Kennwerte.According to yet another advantageous embodiment of the invention, it is provided that the monitoring device has a data memory with the data of characteristics of the voltage drop and / or the at least one other characteristic value. This data memory is in particular the aforementioned memory for recording the time profile of the measured characteristic values.
In einer weiteren bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass die Überwachungseinrichtung eingerichtet ist, einen Vergleich zwischen dem zeitlichen Verlauf der Messwerte mit einem entsprechenden Modell-Verlauf und/oder einem Verlauf einer im Datenspeicher gespeicherten Kennlinie durchzuführen.In a further preferred embodiment of the invention, it is provided that the monitoring device is set up to carry out a comparison between the time profile of the measured values with a corresponding model profile and / or a profile of a characteristic stored in the data memory.
Die Erfindung betrifft weiterhin ein Batteriegesamtsystem mit einem Batteriesystem, insbesondere Hochvolt-Batteriesystem, das mehrere miteinander elektrisch verschalteten Batteriemodule aufweist, die ihrerseits jeweils mehrere miteinander elektrisch verschaltete Batteriezellen umfassen. Das Batteriegesamtsystem weist weiterhin ein vorstehend genanntes Batteriemanagementsystem auf.The invention further relates to a battery overall system comprising a battery system, in particular a high-voltage battery system, which has a plurality of battery modules electrically interconnected to one another, each of which in turn comprises a plurality of battery cells electrically interconnected to one another. The battery overall system further includes an aforementioned battery management system.
Gemäß einer bevorzugten Ausgestaltung des erfindungsgemäßen Gesamtsystems ist vorgesehen, dass die mindestens eine elektrische Verbindung zwischen den Batteriemodulen zu deren elektrischer Verschaltung mindestens ein Verbindungselement (einen Modulverbinder) aufweist.According to a preferred embodiment of the overall system according to the invention, provision is made for the at least one electrical connection between the battery modules to have at least one connecting element (a module connector) to their electrical interconnection.
Die Erfindung betrifft des Weiteren ein Verfahren zum Überwachen eines Batteriesystems, insbesondere eines Hochvolt-Batteriesystems, mittels eines Batteriemanagementsystems, wobei das Batteriesystem mehrere mittels mindestens einer elektrischen Verbindung miteinander elektrisch verschaltete Batteriemodule aufweist, die jeweils mehrere miteinander elektrisch verschaltete Batteriezellen umfassen, wobei das Batteriemanagementsystem mindestens eine Steuer- und/oder Regeleinrichtung zur Überwachung der Spannungen an den einzelnen Batteriezellen oder Gruppen von parallelgeschalteten Batteriezellen der Batteriemodule aufweist. Erfindungsgemäß ist vorgesehen, dass die mindestens eine elektrische Verbindung zwischen den Batteriemodulen durch mindestens eine Überwachungseinrichtung überwacht wird, die (i) in der Steuer- und/oder Regeleinrichtung oder in mindestens einer der mehreren Steuer- und/oder Regeleinrichtungen implementiert ist oder (ii) eine von der mindestens einen Steuer- und/oder Regeleinrichtung separate Überwachungseinrichtung ist.The invention further relates to a method for monitoring a battery system, in particular a high-voltage battery system, by means of a battery management system, wherein the battery system comprises a plurality of electrically interconnected at least one electrical connection battery modules, each comprising a plurality of electrically interconnected battery cells, wherein the battery management system at least a control and / or regulating device for monitoring the voltages at the individual battery cells or groups of parallel-connected battery cells of the battery modules. According to the invention, the at least one electrical connection between the battery modules is monitored by at least one monitoring device which is (i) implemented in the control and / or regulating device or in at least one of the plurality of control and / or regulating devices or (ii) is a separate from the at least one control and / or regulating device monitoring device.
Die Erfindung wird im Folgenden anhand von Abbildungen näher erläutert. Es zeigenThe invention is explained in more detail below with reference to figures. Show it
Die
Nach aktuellem Stand der Technik werden derartige Batteriesysteme
Um eine hohe Spannung, üblicherweise im Bereich von etwa 400 Volt (~400V), welche für Hybridfahrzeug- und Elektrofahrzeugantriebe benötigt wird, zu generieren, werden die Batteriezellen
Die
Das in
Mehrere Batteriezellen
Das jeweilige Batteriemodul
Die
Die Steuer- und/oder Regeleinrichtung
Die Verbindungselemente
Diese beschriebenen elektrischen Verbindungen
Das in der
Alternativ kann die mindestens eine Überwachungseinrichtung aber auch eine von der mindestens einen Steuer- und/oder Regeleinrichtung
Die Überwachungseinrichtung ist dabei eingerichtet, einen Vergleich zwischen dem aktuellen Spannungsabfall über der elektrischen Verbindung
Unter dem Begriff Batterie (Batteriezelle, Batteriemodul, Batteriesystem, etc.) ist im Zusammenhang mit der Erfindung insbesondere eine wiederaufladbare Batterie (ein Akkumulator beziehungsweise eine Sekundärzelle) zu verstehen. The term battery (battery cell, battery module, battery system, etc.) is to be understood in the context of the invention in particular a rechargeable battery (an accumulator or a secondary cell).
Die Batteriesysteme
- • im normalen Betrieb,
- • während einem Unfall bei dem das Fahrzeug beschädigt wird und
- • nach einem Unfall bei dem das Fahrzeug beschädigt wurde und der innere Zustand des Batteriesystems
10 sowie seiner einzelnenModule 14 und Zellen 12 unklar ist.
- • in normal operation,
- • during an accident in which the vehicle is damaged and
- • after an accident in which the vehicle has been damaged and the internal condition of the
battery system 10 as well as itsindividual modules 14 andcells 12 is unclear.
Durch die Beobachtung der Modulverbindungen
Das Batteriemanagementsystem
Claims (11)
Priority Applications (1)
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DE201210203017 DE102012203017A1 (en) | 2012-02-28 | 2012-02-28 | System for managing high voltage battery system mounted in vehicle, has control device to monitor voltages to individual battery cells of battery modules, and monitoring device to monitor electrical connection between battery modules |
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DE201210203017 DE102012203017A1 (en) | 2012-02-28 | 2012-02-28 | System for managing high voltage battery system mounted in vehicle, has control device to monitor voltages to individual battery cells of battery modules, and monitoring device to monitor electrical connection between battery modules |
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DE102012203017A1 true DE102012203017A1 (en) | 2013-08-29 |
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DE201210203017 Pending DE102012203017A1 (en) | 2012-02-28 | 2012-02-28 | System for managing high voltage battery system mounted in vehicle, has control device to monitor voltages to individual battery cells of battery modules, and monitoring device to monitor electrical connection between battery modules |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013112350A1 (en) | 2013-11-11 | 2015-05-13 | Karlsruher Institut für Technologie | System for monitoring and influencing electrically connected in series cells of an electrochemical battery or a capacitor bank |
CN111361418A (en) * | 2020-03-13 | 2020-07-03 | 清华大学天津高端装备研究院洛阳先进制造产业研发基地 | Power battery power supply system for rail engineering vehicle |
DE102020202889A1 (en) | 2020-03-06 | 2021-09-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | Fault tolerant battery system |
DE102020206004A1 (en) | 2020-05-13 | 2021-11-18 | Robert Bosch Gesellschaft mit beschränkter Haftung | Battery system and method for operating a battery system |
DE102020206519A1 (en) | 2020-05-26 | 2021-12-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Battery system and method of operating the battery system |
-
2012
- 2012-02-28 DE DE201210203017 patent/DE102012203017A1/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013112350A1 (en) | 2013-11-11 | 2015-05-13 | Karlsruher Institut für Technologie | System for monitoring and influencing electrically connected in series cells of an electrochemical battery or a capacitor bank |
DE102020202889A1 (en) | 2020-03-06 | 2021-09-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | Fault tolerant battery system |
CN111361418A (en) * | 2020-03-13 | 2020-07-03 | 清华大学天津高端装备研究院洛阳先进制造产业研发基地 | Power battery power supply system for rail engineering vehicle |
CN111361418B (en) * | 2020-03-13 | 2024-05-10 | 清研锐为(洛阳)轨道交通科技有限公司 | Power battery power supply system for track engineering vehicle |
DE102020206004A1 (en) | 2020-05-13 | 2021-11-18 | Robert Bosch Gesellschaft mit beschränkter Haftung | Battery system and method for operating a battery system |
DE102020206519A1 (en) | 2020-05-26 | 2021-12-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Battery system and method of operating the battery system |
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