DE102012223708A1 - Lithium-ion battery cell for drive system of motor vehicle, has monitoring circuit designed to record measurement variable of battery cell, where monitoring circuit is directly arranged on top of battery cell housing cover - Google Patents
Lithium-ion battery cell for drive system of motor vehicle, has monitoring circuit designed to record measurement variable of battery cell, where monitoring circuit is directly arranged on top of battery cell housing cover Download PDFInfo
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- DE102012223708A1 DE102012223708A1 DE201210223708 DE102012223708A DE102012223708A1 DE 102012223708 A1 DE102012223708 A1 DE 102012223708A1 DE 201210223708 DE201210223708 DE 201210223708 DE 102012223708 A DE102012223708 A DE 102012223708A DE 102012223708 A1 DE102012223708 A1 DE 102012223708A1
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 70
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title description 8
- 229910001416 lithium ion Inorganic materials 0.000 title description 8
- 238000005259 measurement Methods 0.000 title 1
- 230000035515 penetration Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004377 microelectronic Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
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- 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
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
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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
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- 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
- B60L2240/545—Temperature
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- 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
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- 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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- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Secondary Cells (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Batteriezelle, die ein Batteriezellengehäuse und einen Batteriezellengehäusedeckel sowie einen Drucksensor umfasst.The present invention relates to a battery cell comprising a battery cell housing and a battery cell housing cover and a pressure sensor.
Stand der TechnikState of the art
Es zeichnet sich ab, dass in Zukunft sowohl bei stationären Anwendungen (z. B. bei Windkraftanlagen) als auch in Fahrzeugen (z. B. in Hybrid- und Elektrofahrzeugen) vermehrt neue Batteriesysteme zum Einsatz kommen werden. Aus heutiger Sicht sehr vielversprechend ist dabei der Einsatz von Lithium-Ionen-Batterien beziehungsweise Lithium-Ionen-Batteriezellen. It is becoming apparent that in the future both in stationary applications (eg in wind turbines) and in vehicles (eg in hybrid and electric vehicles), more and more new battery systems will be used. From today's perspective, the use of lithium-ion batteries or lithium-ion battery cells is very promising.
Lithium-Ionen-Batteriezellen sind sehr empfindlich gegenüber einem Eindringen von Feuchtigkeit. Aufgrund der geforderten hohen Lebensdauern von oft über 10 Jahren werden Batteriezellen des Standes der Technik für den Einsatz in Fahrzeugen immer häufiger mit einem Batteriezellengehäuse versehen, welches aus einer robusten Hartschale besteht. Derartige Batteriezellengehäuse sind im Stand der Technik auch als sogenannte Hardcase-Gehäuse bekannt und weisen Wandstärken im Bereich von 0,4 mm bis 1,5 mm auf. Die Wandstärke ist dabei unter anderem abhängig von dem verwandten Material. Für die Realisierung der Batteriezellengehäuse des Standes der Technik ist insbesondere die Verwendung von Aluminium oder Edelstahl beliebt, wobei Edelstahlgehäuse tendenziell mit geringeren Wandstärken ausgeführt werden. Lithium-ion battery cells are very sensitive to moisture ingress. Due to the required high lifetimes of often over 10 years, battery cells of the prior art for use in vehicles are increasingly provided with a battery cell housing, which consists of a robust hard shell. Such battery cell housings are also known in the art as so-called hardcase housings and have wall thicknesses in the range of 0.4 mm to 1.5 mm. The wall thickness depends among other things on the related material. For the realization of the battery cell housing of the prior art, in particular the use of aluminum or stainless steel is popular, with stainless steel housing tend to be designed with lower wall thicknesses.
Die Batteriezellengehäusedeckel, mit welchen die Batteriezellengehäuse der Batteriezellen verschließbar sind, weisen heutzutage meist eine Dicke im Bereich von 0,6 mm bis 2,0 mm auf. Im Stand der Technik werden der Batteriezellengehäusedeckel und das Batteriezellengehäuse im Verlauf des Fertigungsprozesses der Batteriezelle meist miteinander verschweißt.The battery cell housing cover, with which the battery cell housing of the battery cells are closable, nowadays usually have a thickness in the range of 0.6 mm to 2.0 mm. In the prior art, the battery cell housing cover and the battery cell housing are usually welded together during the manufacturing process of the battery cell.
Um Batteriezellen, insbesondere Lithium-Ionen-Batteriezellen, sicher betreiben zu können, ist im Stand der Technik ein Batteriemanagementsystem (BMS) erforderlich. Das Batteriemanagementsystem verhindert unter anderem eine Überladung oder Tiefenentladung der Batteriezellen einer Batterie sowie eine Belastung der Batteriezellen mit unzulässig hohen Lade- oder Entladeströmen. Für Batterien, die in Elektro- oder Hybridfahrzeugen zum Einsatz kommen, sind aufgrund der großen Anzahl an Batteriezellen, die in derartigen Batterien verbaut werden, komplexe Elektroniken für die Realisierung des Batteriemanagementsystems erforderlich.In order to safely operate battery cells, in particular lithium-ion battery cells, a battery management system (BMS) is required in the prior art. Among other things, the battery management system prevents overcharging or deep discharge of the battery cells of a battery as well as loading of the battery cells with inadmissibly high charging or discharging currents. For batteries that are used in electric or hybrid vehicles, complex electronics are required for the realization of the battery management system due to the large number of battery cells that are installed in such batteries.
Für die Überwachung der Batteriezellen werden sogenannte CSC Elektronikmodule eingesetzt, bei welchen es sich um Überwachungsschaltungen handelt. Diese können einzelne, aber auch mehrere Batteriezellen einer Batterie überwachen. Dazu wird die Überwachungsschaltung entweder in der Nähe der zugehörigen Batteriezelle(n) als "dezentraler Satellit' platziert, oder die gesamte Elektronik der Überwachungsschaltung wird in einer "Zentralelektronik" realisiert, welche sich beispielsweise innerhalb eines zentralen Batteriesystemsteuergeräts des Batteriemanagementsystems befinden kann.For monitoring the battery cells so-called CSC electronic modules are used, which are monitoring circuits. These can monitor individual, but also several battery cells of a battery. For this purpose, the monitoring circuit is placed either in the vicinity of the associated battery cell (s) as a "decentralized satellite", or the entire electronics of the monitoring circuit is implemented in a "central electronics", which may be located, for example, within a central battery system control unit of the battery management system.
Offenbarung der ErfindungDisclosure of the invention
Erfindungsgemäß wird eine Batteriezelle zur Verfügung gestellt, welche ein Batteriezellengehäuse, einen Batteriezellengehäusedeckel und zwei Batteriezellenterminals, über welche die Batteriezelle mit einem Batteriesystem verbindbar ist, umfasst. Ferner umfasst die Batteriezelle eine positive Elektrode und eine negative Elektrode, welche innerhalb des Batteriezellengehäuses angeordnet und über jeweils einen Strompfad innerhalb des Batteriezellengehäuses mit jeweils einem Batteriezellenterminal verbunden sind. Erfindungsgemäß weist die Batteriezelle mindestens einen Drucksensor auf.According to the invention, a battery cell is provided which comprises a battery cell housing, a battery cell housing cover and two battery cell terminals via which the battery cell can be connected to a battery system. Furthermore, the battery cell comprises a positive electrode and a negative electrode, which are arranged within the battery cell housing and connected in each case via a current path within the battery cell housing, each having a battery cell terminal. According to the invention, the battery cell has at least one pressure sensor.
Der Innendruck einer Batteriezelle ist eine für die Sicherheit derselben relevante physikalische Größe. Stehen Informationen über den Innendruck der Batteriezelle zur Verfügung, kann die Sicherheit von Batteriesystemen unter Verwendung dieser Informationen gegenüber dem Stand der Technik erheblich verbessert werden. Dabei kann der Drucksensor direkt auf oder in der Batteriezelle verbaut und unmittelbar aus der Batteriezelle gespeist werden. Da der Drucksensor direkt mit der Batteriezelle verbunden ist, kann der Verlauf des Innendrucks der Batteriezelle über das gesamte Leben der Batteriezelle registriert, gespeichert und ausgewertet werden. Dadurch lassen sich auch zu jedem Zeitpunkt Informationen über den Alterungszustand der Batteriezelle gewinnen. Ferner kann durch den Verbau eines Drucksensors ein sicherheitskritischer Zustand der Batteriezelle sehr früh erkannt und die Batteriezelle daraufhin in einen sicheren Betriebszustand überführt werden.The internal pressure of a battery cell is a physical quantity relevant to the safety of the same. If information about the internal pressure of the battery cell is available, the safety of battery systems using this information can be greatly improved over the prior art. In this case, the pressure sensor can be installed directly on or in the battery cell and fed directly from the battery cell. Since the pressure sensor is connected directly to the battery cell, the course of the internal pressure of the battery cell over the entire life of the battery cell can be registered, stored and evaluated. As a result, information about the aging state of the battery cell can be obtained at any time. Furthermore, by installing a pressure sensor, a safety-critical state of the battery cell can be detected very early and the battery cell can then be transferred to a safe operating state.
Bevorzugt ist der mindestens eine Drucksensor innerhalb der Batteriezelle angeordnet. In einer derartigen Ausführungsform ist der Drucksensor besonders sicher mit der Batteriezelle verbunden und ist eine besonders einfache und schnelle Erfassung des Innendrucks der Batteriezelle möglich.Preferably, the at least one pressure sensor is arranged inside the battery cell. In such an embodiment, the pressure sensor is particularly securely connected to the battery cell and a particularly simple and rapid detection of the internal pressure of the battery cell is possible.
Vorzugsweise ist der mindestens eine Drucksensor dazu ausgelegt, den Innendruck der Batteriezelle zu erfassen. Dadurch ist der Drucksensor zur Erfassung eines Überdrucks beziehungsweise eines Unterdrucks innerhalb des Batteriezellengehäuses beziehungsweise innerhalb der Batteriezelle in der Lage.Preferably, the at least one pressure sensor is designed to detect the internal pressure of the battery cell. As a result, the pressure sensor for detecting an overpressure or a negative pressure within the Battery cell housing or within the battery cell in a position.
In einer bevorzugten Ausführungsform ist der Drucksensor in einer elektronischen Schaltung ausgeführt. Besonders bevorzugt ist die elektronische Schaltung als Micro-Electro-Mechanical System (MEMS), also als mikroelektronisches mechanisches System ausgeführt. Durch eine derartige Ausführungsform kann der Drucksensor als eigenständiges Bauelement mit sehr geringen Abmessungen realisiert werden, welches Logikelemente und mechanische Strukturen beispielsweise in einem Chip vereint. In a preferred embodiment, the pressure sensor is implemented in an electronic circuit. The electronic circuit is particularly preferably designed as a micro-electro-mechanical system (MEMS), ie as a microelectronic mechanical system. By such an embodiment, the pressure sensor can be realized as an independent component with very small dimensions, which combines logic elements and mechanical structures, for example in a chip.
In einer bevorzugten Weiterentwicklung dieser Ausführungsform weist die Batteriezelle ferner eine Überwachungsschaltung auf, welche die elektronische Schaltung umfasst, wobei die elektronische Schaltung dazu ausgebildet ist, den erfassten Innendruck der Batteriezelle an die Überwachungsschaltung zu übermitteln. Durch eine derartige Ausführungsform ist der Drucksensor innerhalb einer Überwachungsschaltung realisierbar, mit welcher auch weitere Messgrößen einer Batteriezelle, beispielsweise deren Klemmspannung und/oder deren Temperatur erfassbar sein können.In a preferred development of this embodiment, the battery cell further comprises a monitoring circuit, which comprises the electronic circuit, wherein the electronic circuit is adapted to transmit the detected internal pressure of the battery cell to the monitoring circuit. By such an embodiment, the pressure sensor can be realized within a monitoring circuit, with which also other measured variables of a battery cell, for example, the clamping voltage and / or the temperature can be detected.
Bevorzugt ist die Überwachungsschaltung auf der Innenseite des Batteriezellengehäusedeckels angeordnet. Durch eine derart ausgeführte Batteriezelle muss die Überwachungsschaltung nicht separat mechanisch fixiert werden, da sie mechanisch robust mit dem Batteriezellengehäusedeckel verbunden ist.Preferably, the monitoring circuit is arranged on the inside of the battery cell housing cover. By means of a battery cell designed in this way, the monitoring circuit need not be mechanically fixed separately, since it is mechanically robustly connected to the battery cell housing cover.
In einer bevorzugten Ausführungsform ist die Überwachungsschaltung als Flexible Printed Circuit Board ausgeführt. Der Vorteil solcher flexibler, gedruckter Schaltkreise liegt darin, dass bei Verwendung derselben geringe thermische Übergangswiderstände realisiert werden können. Aus diesem Grund ist es vorteilhaft, derartige Schaltkreise bei Anwendungen einzusetzen, bei denen elektronische Bauelemente mit großen Verlustleistungen zum Einsatz kommen. Ferner werden Flexible Printed Circuit Boards auch bei Anwendungen eingesetzt, bei denen die Leistungsfähigkeit der zur Realisierung dieser Anwendungen verwandten Bauelemente mit zunehmender Temperatur zurückgeht.In a preferred embodiment, the monitoring circuit is designed as a flexible printed circuit board. The advantage of such flexible, printed circuits is that when using the same low thermal contact resistance can be realized. For this reason, it is advantageous to use such circuits in applications in which electronic components with high power losses are used. Furthermore, Flexible Printed Circuit Boards are also used in applications where the performance of the devices used to implement these applications decreases with increasing temperature.
Bevorzugt weist der Batteriezellengehäusedeckel einen ersten und einen zweiten elektrisch leitfähigen Bereich auf, wobei der erste und der zweite Bereich elektrisch voneinander isoliert sind und der erste Bereich mit der positiven Elektrode und der zweite Bereich mit der negativen Elektrode der Batteriezelle elektrisch leitfähig verbunden sind. Durch eine derartige Ausführungsform kann die Überwachungsschaltung direkt über den ersten und den zweiten Bereich des Batteriezellengehäusedeckels gespeist werden.The battery cell housing cover preferably has a first and a second electrically conductive region, wherein the first and the second region are electrically insulated from one another and the first region is electrically conductively connected to the positive electrode and the second region is electrically conductively connected to the negative electrode of the battery cell. By such an embodiment, the monitoring circuit can be powered directly across the first and second regions of the battery cell case cover.
In einer bevorzugten Weiterentwicklung dieser Ausführungsform sind der erste und der zweite Bereich elektrisch voneinander isoliert und gegenüber einem Eindringen von Feuchtigkeit abgedichtet mittels Nanomolding miteinander verbunden. Nanomolding ermöglicht eine besonders feste, auf Nanometerebene formschlüssige Verbindung zwischen dem ersten und dem zweiten Bereich des Batteriezellengehäusedeckels.In a preferred further development of this embodiment, the first and the second region are electrically insulated from one another and sealed from one another by penetration of moisture by means of nanomolding. Nanomolding enables a particularly strong, nano-scale positive connection between the first and the second region of the battery cell housing cover.
Bevorzugt ist ein erster Versorgungsspannungsanschluss der Überwachungsschaltung mit dem ersten Bereich und/oder ein zweiter Versorgungsspannungsanschluss der Überwachungsschaltung mit dem zweiten Bereich elektrisch leitfähig verbunden und ist die Überwachungsschaltung dazu ausgebildet, über den ersten und/oder den zweiten Bereich gespeist zu werden. Durch eine derartige Ausführungsform können auf von den Versorgungsspannungsanschlüssen der Überwachungsschaltung in das Innere der Batteriezelle geführte Versorgungsleitungen verzichtet werden. Dadurch können Material, Kosten und Arbeitsaufwand bei der Herstellung der Batteriezelle eingespart werden.Preferably, a first supply voltage terminal of the monitoring circuit is electrically conductively connected to the first area and / or a second supply voltage terminal of the monitoring circuit is electrically conductively connected to the second area and the monitoring circuit is designed to be fed via the first and / or the second area. By means of such an embodiment, it is possible to dispense with supply lines led from the supply voltage terminals of the monitoring circuit into the interior of the battery cell. As a result, material, costs and labor can be saved in the production of the battery cell.
Bevorzugt ist die beanspruchte Batteriezelle eine Lithium-Ionen-Batteriezelle. Preferably, the claimed battery cell is a lithium-ion battery cell.
Ferner wird eine Batterie mit einer erfindungsgemäßen Batteriezelle bereitgestellt, wobei die Batterie besonders bevorzugt als eine Lithium-Ionen-Batterie ausgeführt ist. Vorteile solcher Batterien sind unter anderem in ihrer vergleichsweise hohen Energiedichte sowie ihrer großen thermischen Stabilität gegeben. Ein weiterer Vorteil von Lithium-Ionen-Batterien ist, dass diese keinem Memory Effekt unterliegen.Further, a battery is provided with a battery cell according to the invention, wherein the battery is particularly preferably designed as a lithium-ion battery. Advantages of such batteries include their comparatively high energy density and their high thermal stability. Another advantage of lithium-ion batteries is that they are not subject to memory effect.
Ferner wird ein Kraftfahrzeug mit einer Batterie mit einer erfindungsgemäßen Batteriezelle bereitgestellt, wobei die Batterie mit einem Antriebssystem des Kraftfahrzeugs verbunden ist.Furthermore, a motor vehicle is provided with a battery having a battery cell according to the invention, wherein the battery is connected to a drive system of the motor vehicle.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben und in der Beschreibung beschrieben.Advantageous developments of the invention are specified in the subclaims and described in the description.
Zeichnungendrawings
Ausführungsbeispiele der Erfindung werden anhand der Zeichnungen und der nachfolgenden Beschreibung näher erläutert. Es zeigen:Embodiments of the invention will be explained in more detail with reference to the drawings and the description below. Show it:
Ausführungsformen der ErfindungEmbodiments of the invention
Die
In diesem Ausführungsbeispiel ist der Drucksensor
Des Weiteren weist die Batteriezelle
In diesem Ausführungsbeispiel ist das Batteriezellengehäuse
Ferner ist die Überwachungsschaltung
In diesem Ausführungsbeispiel weist der Batteriezellengehäusedeckel
In diesem Ausführungsbeispiel einer erfindungsgemäßen Batteriezelle
Die
In diesem weiteren Ausführungsbeispiel ist der Drucksensor
Ferner ist die Überwachungsschaltung
In allen hier dargestellten Ausführungsbeispielen kann der Strompfad zwischen dem ersten Bereich
Claims (12)
Priority Applications (1)
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DE201210223708 DE102012223708A1 (en) | 2012-12-19 | 2012-12-19 | Lithium-ion battery cell for drive system of motor vehicle, has monitoring circuit designed to record measurement variable of battery cell, where monitoring circuit is directly arranged on top of battery cell housing cover |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE201210223708 DE102012223708A1 (en) | 2012-12-19 | 2012-12-19 | Lithium-ion battery cell for drive system of motor vehicle, has monitoring circuit designed to record measurement variable of battery cell, where monitoring circuit is directly arranged on top of battery cell housing cover |
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DE102012223708A1 true DE102012223708A1 (en) | 2014-06-26 |
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DE201210223708 Pending DE102012223708A1 (en) | 2012-12-19 | 2012-12-19 | Lithium-ion battery cell for drive system of motor vehicle, has monitoring circuit designed to record measurement variable of battery cell, where monitoring circuit is directly arranged on top of battery cell housing cover |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102017217955A1 (en) * | 2017-10-09 | 2019-04-11 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for optimizing a temperature measurement |
DE102018209325A1 (en) * | 2018-06-12 | 2019-12-12 | Bayerische Motoren Werke Aktiengesellschaft | Measurements on batteries |
DE102018209324A1 (en) | 2018-06-12 | 2019-12-12 | Bayerische Motoren Werke Aktiengesellschaft | Monitoring of batteries |
DE102019213125A1 (en) * | 2019-08-30 | 2021-03-04 | Volkswagen Aktiengesellschaft | Method for operating an electrochemical battery cell |
WO2021073802A1 (en) * | 2019-10-15 | 2021-04-22 | Vitesco Technologies GmbH | Arrangement for pressure monitoring within a battery housing, battery management device, and battery system with an arrangement |
CN113054327A (en) * | 2019-12-26 | 2021-06-29 | 矢崎总业株式会社 | Bus bar module |
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2012
- 2012-12-19 DE DE201210223708 patent/DE102012223708A1/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102017217955A1 (en) * | 2017-10-09 | 2019-04-11 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for optimizing a temperature measurement |
DE102018209325A1 (en) * | 2018-06-12 | 2019-12-12 | Bayerische Motoren Werke Aktiengesellschaft | Measurements on batteries |
DE102018209324A1 (en) | 2018-06-12 | 2019-12-12 | Bayerische Motoren Werke Aktiengesellschaft | Monitoring of batteries |
WO2019238396A1 (en) | 2018-06-12 | 2019-12-19 | Bayerische Motoren Werke Aktiengesellschaft | Monitoring batteries |
US11688894B2 (en) | 2018-06-12 | 2023-06-27 | Bayerische Motoren Werke Aktiengesellschaft | Monitoring batteries for a faulty, problematic, or critical state |
DE102019213125A1 (en) * | 2019-08-30 | 2021-03-04 | Volkswagen Aktiengesellschaft | Method for operating an electrochemical battery cell |
WO2021073802A1 (en) * | 2019-10-15 | 2021-04-22 | Vitesco Technologies GmbH | Arrangement for pressure monitoring within a battery housing, battery management device, and battery system with an arrangement |
CN114467213A (en) * | 2019-10-15 | 2022-05-10 | 纬湃科技有限责任公司 | Device for monitoring the pressure in a battery housing, battery management apparatus having a device, and battery system |
CN113054327A (en) * | 2019-12-26 | 2021-06-29 | 矢崎总业株式会社 | Bus bar module |
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