DE102011082650A1 - Separating device for battery lithium ion battery mounted in motor vehicle, has fuse that opens, when the electrical switching element is closed - Google Patents
Separating device for battery lithium ion battery mounted in motor vehicle, has fuse that opens, when the electrical switching element is closed Download PDFInfo
- Publication number
- DE102011082650A1 DE102011082650A1 DE102011082650A DE102011082650A DE102011082650A1 DE 102011082650 A1 DE102011082650 A1 DE 102011082650A1 DE 102011082650 A DE102011082650 A DE 102011082650A DE 102011082650 A DE102011082650 A DE 102011082650A DE 102011082650 A1 DE102011082650 A1 DE 102011082650A1
- Authority
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- Germany
- Prior art keywords
- battery
- fuse
- separating device
- switching element
- electrical switching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
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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
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Abstract
Description
Die vorliegende Erfindung betrifft eine Trennvorrichtung für eine Batterie sowie eine Batterie mit der erfindungsgemäßen Trennvorrichtung.The present invention relates to a separating device for a battery and a battery with the separating device according to the invention.
Stand der TechnikState of the art
Es zeichnet sich ab, dass in Zukunft sowohl bei stationären Anwendungen, als auch bei Fahrzeugen wie Hybrid- und Elektrofahrzeugen vermehrt Batteriesysteme zum Einsatz kommen werden. Um die für eine jeweilige Anwendung gegebenen Anforderungen an Spannung und zur Verfügung stellbare Leistung erfüllen zu können, wird eine hohe Zahl von Batteriezellen in Serie geschaltet. Da der von einer solchen Batterie bereitgestellte Strom durch alle Batteriezellen fließen muss und eine Batteriezelle nur einen begrenzten Strom leiten kann, werden oft zusätzlich Batteriezellen parallel geschaltet, um den maximalen Strom zu erhöhen. Dies kann entweder durch Vorsehen von mehreren Zellwickeln innerhalb eines Batteriezellengehäuses oder durch externes Verschalten von Batteriezellen geschehen. Dabei ist jedoch problematisch, dass es aufgrund nicht exakt identischer Zellkapazitäten und -spannungen zu Ausgleichsströmen zwischen den parallel geschalteten Batteriezellen kommen kann.It is becoming apparent that in the future, battery systems will increasingly be used both in stationary applications and in vehicles such as hybrid and electric vehicles. To meet the voltage and available power requirements of a particular application, a large number of battery cells are connected in series. Since the power provided by such a battery must flow through all the battery cells and a battery cell can only conduct a limited current, battery cells are often additionally connected in parallel in order to increase the maximum current. This can be done either by providing multiple cell wraps within a battery cell housing or by externally interconnecting battery cells. However, it is problematic that due to not exactly identical cell capacitances and voltages can lead to equalization currents between the parallel-connected battery cells.
Das Prinzipschaltbild einer üblichen elektrischen Antriebseinheit, wie sie beispielsweise in Elektro- und Hybrid-Fahrzeugen oder auch in stationären Anwendungen wie bei der Rotorblattverstellung von Windkraftanlagen zum Einsatz kommt, ist in
Offenbarung der ErfindungDisclosure of the invention
Erfindungsgemäß wird eine Trennvorrichtung für eine Batterie bereitgestellt. Die Trennvorrichtung umfasst eine Sicherung sowie ein elektrisches Schaltelement. Die Trennvorrichtung ist derart ausgebildet, dass die Sicherung öffnet, das heißt ausgelöst wird, wenn das elektrische Schaltelement geschlossen wird. Die Öffnung der Sicherung ereignet sich nicht notwendigerweise sofort nach der Schließung des elektrischen Schaltelementes, sondern typischerweise mit einer gewissen zeitlichen Verzögerung. Die erfindungsgemäße Anordnung erlaubt eine gezielt steuerbare und kostengünstige Trennung einer Batterie von einem Verbraucher.According to the invention, a separator for a battery is provided. The separator comprises a fuse and an electrical switching element. The separating device is designed such that the fuse opens, that is triggered, when the electrical switching element is closed. The opening of the fuse does not necessarily occur immediately after the closure of the electrical switching element, but typically with a certain time delay. The arrangement according to the invention allows a targeted controllable and cost-effective separation of a battery from a consumer.
In einer bevorzugten Ausführungsform der Erfindung ist die Sicherung eine Thermosicherung, welche an einen Widerstand gekoppelt ist. Die Trennvorrichtung ist hierbei derart ausgebildet, dass ein Strom durch den Widerstand fließt, wenn das elektrische Schaltelement geschlossen ist. Die durch den Stromfluss verursachte Erwärmung des Widerstands löst ein Öffnen der Thermosicherung aus, was wiederum nicht notwenigerweise augenblicklich nach der Schließung des elektrischen Schaltelements geschieht, sondern nach einer kurzen zeitlichen Verzögerung. Ein erster Anschluss der Thermosicherung kann mit einem ersten Anschluss des Widerstandes verbunden sein. Die Thermosicherung und der Widerstand können sich jedoch auch in getrennten elektrischen Kreisen befinden. Ein erster Anschluss des elektrischen Schaltelements kann mit einem zweiten Anschluss des Widerstands verbunden sein, so dass das elektrische Schaltelement und der Widerstand von einem gleichen Strom durchflossen werden. In a preferred embodiment of the invention, the fuse is a thermal fuse coupled to a resistor. The separator is in this case designed such that a current flows through the resistor when the electrical switching element is closed. The heating caused by the current flow of the resistor triggers an opening of the thermal fuse, which in turn does not necessarily happen immediately after the closure of the electrical switching element, but after a short time delay. A first terminal of the thermal fuse may be connected to a first terminal of the resistor. However, the thermal fuse and the resistor can also be in separate electrical circuits. A first terminal of the electrical switching element may be connected to a second terminal of the resistor, so that the electrical switching element and the resistor are traversed by a same current.
In einer weiteren bevorzugten Ausführungsform der Erfindung ist die Sicherung eine elektrische Sicherung. Die Trennvorrichtung ist hierbei derart ausgebildet, dass die elektrische Sicherung öffnet, das heißt ausgelöst wird, wenn das elektrische Schaltelement geschlossen wird.In a further preferred embodiment of the invention, the fuse is an electrical fuse. The separator is in this case designed such that the electrical fuse opens, that is triggered, when the electrical switching element is closed.
Bei dem elektrischen Schaltelement kann es sich um einen Transistor, insbesondere einen Leistungs-MOSFET (Metall-Oxid-Halbleiter-Feldeffekttransistor), einen elektromechanischen Schalter oder einen Thyristor handeln.The electrical switching element may be a transistor, in particular a power MOSFET (metal oxide semiconductor field effect transistor), an electromechanical switch or a thyristor.
Typischerweise ist die erfindungsgemäße Trennvorrichtung Teil einer Batterie, welche mindestens eine Batteriezelle, vorzugsweise eine Vielzahl von Batteriezellen, umfasst. Die Sicherung der Trennvorrichtung ist hierbei zwischen einen ersten Pol der Batteriezelle (oder Batteriezellen) und ein Terminal der Batterie geschaltet. Die Batterie ist bevorzugt eine Lithium-Ionen-Zelle.Typically, the separating device according to the invention is part of a battery, which comprises at least one battery cell, preferably a plurality of battery cells. The fuse of the separator is in this case connected between a first pole of the battery cell (or battery cells) and a terminal of the battery. The battery is preferably a lithium-ion cell.
Zusätzlich kann in der Batterie ein Relais vorgesehen sein, welches zusammen mit der Sicherung der Trennvorrichtung in Reihe geschaltet ist. Die beiden Komponenten sind dann zwischen den ersten Pol der Batteriezelle (Batteriezellen) und ein Terminal der Batterie geschaltet. In addition, a relay may be provided in the battery, which is connected in series with the fuse of the separator. The two components are then connected between the first pole of the battery cell (battery cells) and a terminal of the battery.
Umfasst die Batterie eine Trennvorrichtung mit einer elektrischen Sicherung, so kann die Batteriezelle oder die Vielzahl von Batteriezellen über die elektrische Sicherung kurzgeschlossen sein, wenn das elektrische Schaltelement geschlossen ist.If the battery includes a disconnecting device with an electrical fuse, the battery cell or the plurality of battery cells may be short-circuited via the electrical fuse when the electrical switching element is closed.
Umfasst die Batterie dagegen eine Trennvorrichtung mit einer Thermosicherung, so kann die Batteriezelle oder die Vielzahl von Batteriezellen über den Widerstand kurzgeschlossen sein, wenn das elektrische Schaltelement geschlossen ist.If, on the other hand, the battery comprises a disconnecting device with a thermal fuse, the battery cell or the multiplicity of battery cells can be short-circuited via the resistor when the electrical switching element is closed.
Die Trennvorrichtung muss aber nicht notwendigerweise Teil einer Batterie sein. Ist die Trennvorrichtung außerhalb der Batterie angeordnet, so wird die Sicherung der Trennvorrichtung zwischen die Batteriezelle (die Batteriezellen) und einen Verbraucher (insbesondere zwischen ein Terminal der Batterie und den Verbraucher) geschaltet. Die Batterie beziehungsweise die Batteriezelle (die Batteriezellen) kann (können) somit von dem Verbraucher getrennt werden, indem das elektrische Schaltelement der Trennvorrichtung geschlossen wird.However, the separator does not necessarily have to be part of a battery. If the separator is located outside the battery, the fuse of the separator between the battery cell (the battery cells) and a consumer (in particular between a terminal of the battery and the consumer) is switched. The battery or the battery cell (the battery cells) can thus be isolated from the consumer by the electrical switching element of the separator is closed.
Ein weiterer Aspekt der Erfindung betrifft ein Kraftfahrzeug, welches die erfindungsgemäße Batterie oder die erfindungsgemäße Trennvorrichtung umfasst. Another aspect of the invention relates to a motor vehicle comprising the battery according to the invention or the separation device according to the invention.
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 Trennvorrichtung
Die Trennvorrichtung
Wiederum umfasst die Batterie
Die Trennvorrichtung
Sollen die Batteriezellen von dem Batterieterminal
Die Trennvorrichtung
Wird nun der Leistungs-Transistor
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011082650A DE102011082650A1 (en) | 2011-09-14 | 2011-09-14 | Separating device for battery lithium ion battery mounted in motor vehicle, has fuse that opens, when the electrical switching element is closed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011082650A DE102011082650A1 (en) | 2011-09-14 | 2011-09-14 | Separating device for battery lithium ion battery mounted in motor vehicle, has fuse that opens, when the electrical switching element is closed |
Publications (1)
Publication Number | Publication Date |
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DE102011082650A1 true DE102011082650A1 (en) | 2013-03-14 |
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Application Number | Title | Priority Date | Filing Date |
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DE102011082650A Pending DE102011082650A1 (en) | 2011-09-14 | 2011-09-14 | Separating device for battery lithium ion battery mounted in motor vehicle, has fuse that opens, when the electrical switching element is closed |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014221526A1 (en) | 2014-10-23 | 2016-05-12 | Robert Bosch Gmbh | Device for cell voltage-sensitive overcurrent interruption |
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2011
- 2011-09-14 DE DE102011082650A patent/DE102011082650A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014221526A1 (en) | 2014-10-23 | 2016-05-12 | Robert Bosch Gmbh | Device for cell voltage-sensitive overcurrent interruption |
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R081 | Change of applicant/patentee |
Owner name: SAMSUNG SDI CO., LTD., YONGIN-SI, KR Free format text: FORMER OWNER: SB LIMOTIVE COMPANY LTD., SB LIMOTIVE GERMANY GMBH, , KR Effective date: 20130425 Owner name: SAMSUNG SDI CO., LTD., YONGIN-SI, KR Free format text: FORMER OWNERS: SB LIMOTIVE COMPANY LTD., YONGIN, KYONGGI, KR; SB LIMOTIVE GERMANY GMBH, 70469 STUTTGART, DE Effective date: 20130425 Owner name: ROBERT BOSCH GMBH, DE Free format text: FORMER OWNERS: SB LIMOTIVE COMPANY LTD., YONGIN, KYONGGI, KR; SB LIMOTIVE GERMANY GMBH, 70469 STUTTGART, DE Effective date: 20130425 Owner name: SAMSUNG SDI CO., LTD., KR Free format text: FORMER OWNER: SB LIMOTIVE COMPANY LTD., SB LIMOTIVE GERMANY GMBH, , KR Effective date: 20130425 Owner name: ROBERT BOSCH GMBH, DE Free format text: FORMER OWNER: SB LIMOTIVE COMPANY LTD., SB LIMOTIVE GERMANY GMBH, , KR Effective date: 20130425 |
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R016 | Response to examination communication | ||
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: H01M0002340000 Ipc: H01M0050572000 |