DE102010052514A1 - Rechargeable battery block, has housing for accommodating flat rechargeable battery cells, and contact device consisting of spacer element and clamping element, where elements are designed as one-piece with plus and minus poles of block - Google Patents
Rechargeable battery block, has housing for accommodating flat rechargeable battery cells, and contact device consisting of spacer element and clamping element, where elements are designed as one-piece with plus and minus poles of block Download PDFInfo
- Publication number
- DE102010052514A1 DE102010052514A1 DE102010052514A DE102010052514A DE102010052514A1 DE 102010052514 A1 DE102010052514 A1 DE 102010052514A1 DE 102010052514 A DE102010052514 A DE 102010052514A DE 102010052514 A DE102010052514 A DE 102010052514A DE 102010052514 A1 DE102010052514 A1 DE 102010052514A1
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- Germany
- Prior art keywords
- spacer element
- battery pack
- pole
- pack according
- contact device
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
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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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
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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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
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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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/522—Inorganic material
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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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
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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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Die Erfindung betrifft einen Akkublock mit einem von einem Deckel verschlossenen Gehäuse zur Aufnahme einer Vielzahl einzelner Akkuzellen, insbesondere Flachzellen, nach dem Oberbegriff des Anspruchs 1.The invention relates to a battery pack with a housing closed by a cover for accommodating a plurality of individual battery cells, in particular flat cells, according to the preamble of
Akkublocks bestehen aus einer Vielzahl von Akkuzellen, die innerhalb eines Gehäuses des Akkublocks in einer vorgegebenen Anordnung als Reihen- oder Parallelschaltung elektrisch miteinander verbunden sind und die Spannung sowie die Kapazität des Akkublocks bestimmen. Moderne Akkublocks bestehen aus Flachzellen in der Form von Pouchzellen, die als Kern einen Stapel von Anodenfolien und Kathodenfolien aufweisen, die jeweils durch Separatorfolien voneinander getrennt sind. Der Folienstapel ist in einer Gehäusefolie aufgenommen, die eine umlaufende Siegelnaht aufweist. Ein flacher Kathodenableiter und ein flacher Anodenableiter sind aus der Siegelnaht der Flachzelle herausgeführt und dienen der elektrischen Verbindung der Flachzellen untereinander.Battery pack consist of a plurality of rechargeable battery cells, which are electrically connected to each other within a housing of the battery pack in a predetermined arrangement as a series or parallel circuit and determine the voltage and the capacity of the battery pack. Modern battery packs consist of flat cells in the form of pouch cells, which have as their core a stack of anode foils and cathode foils, which are separated from one another by separator foils. The film stack is accommodated in a housing film, which has a circumferential sealed seam. A flat cathode arrester and a flat anode conductor are led out of the sealed seam of the flat cell and serve to electrically connect the flat cells to one another.
Derartige Flachzellen z. B. auf Lithium-Basis sind in einer vorgegebenen Anordnung in einem Gehäuse eines Akkublocks gehalten, wobei die Anordnung der elektrisch untereinander verbundenen Flachzellen mit einem ersten äußeren Anschlusspol des Akkublocks (Pluspol) und einem zweiten äußeren Anschlusspol des Akkublocks (Minuspol) verbunden sind. Die aus den einzelnen Akkuzellen jeweils herausgeführten Kathodenableiter und Anodenableiter liegen zur einfachen Herstellung einer elektrischen Verbindung nebeneinander und werden über eine Kontaktvorrichtung elektrisch miteinander verbunden. Die Kontaktvorrichtung besteht aus einem zwischen den nebeneinander liegenden Ableitern benachbarter Flachzellen liegenden Distanzelement und einem die Ableiter und das Distanzelement übergreifenden Klemmelement, das die Ableiter elektrisch verbindend auf den Seitenflächen des Distanzelementes hält.Such flat cells z. B. lithium-based are held in a predetermined arrangement in a housing of a battery pack, the arrangement of the electrically interconnected flat cells with a first outer terminal of the battery pack (positive terminal) and a second outer terminal pole of the battery pack (negative terminal) are connected. The cathode arresters and anode arresters led out of the individual battery cells are located next to one another for the simple production of an electrical connection and are electrically connected to one another via a contact device. The contact device consists of a lying between the adjacent arresters of adjacent flat cells spacer element and the arrester and the spacer element cross-clamping element that holds the arrester electrically connecting on the side surfaces of the spacer element.
Die über die Anschlusspole fließenden Ströme eines derartigen Akkublocks liegen im Bereich von einigen Hundert Ampere, so dass jeder im Stromkreis liegende Übergangswiderstand zu signifikanten elektrischen Verlusten einer entsprechenden Wärmeentwicklung führt.The currents flowing through the terminal poles of such a battery pack are in the region of a few hundred amperes, so that each contact resistance in the circuit leads to significant electrical losses of a corresponding heat development.
Der Erfindung liegt die Aufgabe zugrunde, den Übergangswiderstand im Stromkreis eines Akkublocks gering zu halten.The invention has for its object to keep the contact resistance in the circuit of a battery pack low.
Die Aufgabe wird erfindungsgemäß nach den kennzeichnenden Merkmalen des Anspruchs 1 gelöst.The object is achieved according to the characterizing features of
Aufgrund der einteiligen Ausbildung eines Anschlusspols des Akkublocks mit einem der Elemente der Kontaktvorrichtung wird eine großflächige, materialeinheitliche elektrische Verbindung zwischen der Anordnung aus Akkuzellen und dem Anschlusspol geschaffen, die einen sehr geringen Übergangswiderstand von wenigen mΩ hat.Due to the one-piece design of a terminal pole of the battery pack with one of the elements of the contact device, a large area, uniform material electrical connection between the arrangement of battery cells and the terminal is created, which has a very low contact resistance of a few mΩ.
In vorteilhafter Weiterbindung der Erfindung ist das Element der Kontaktvorrichtung, das einteilig mit dem Anschlusspol ausgebildet ist, das Distanzelement der Kontaktvorrichtung. Das Distanzelement ist mechanisch fest im Deckel angeordnet. Dadurch wird eine stabile Halterung des mechanisch belasteten Anschlusspols im Deckel des Gehäuses des Akkublocks gewährleistet. Der Polabschnitt eines Anschlusspols ist über einen Anbindungsabschnitt mit dem Distanzelement verbunden, wobei sich der Anbindungsabschnitt über einen Großteil der Stirnfläche eines Endes des Distanzelementes erstreckt. Bevorzugt erstreckt sich der Anbindungsabschnitt über mehr als 60% der Stirnfläche des Endes des Distanzelementes, so dass nicht nur eine gute elektrische Verbindung des Polabschnitts über den Anbindungsabschnitt mit dem Distanzelement und der Anordnung der Akkuflachzellen gegeben ist, sondern auch ein guter Wärmeübergang erzielt ist. Das Distanzelement mit dem einteilig angeformten Anschlusspol weist vorteilhaft einen inneren Kanal auf, der Teil eines Kühlkreislaufes ist und von einem Temperiermedium, insbesondere einem Kühlmedium durchströmt ist. Dadurch ist eine gezielte Kühlung auch des Anschlusspols möglich.In an advantageous further connection of the invention, the element of the contact device, which is formed integrally with the terminal pole, the spacer element of the contact device. The spacer element is mechanically fixed in the lid. This ensures a stable mounting of the mechanically loaded terminal pole in the lid of the housing of the battery pack. The pole section of a terminal pole is connected to the spacer element via a connection section, wherein the connection section extends over a large part of the end face of one end of the spacer element. Preferably, the connection portion extends over more than 60% of the end face of the end of the spacer element, so that not only a good electrical connection of the pole section over the connection portion with the spacer element and the arrangement of Akkuflachzellen is given, but also a good heat transfer is achieved. The spacer element with the integrally molded connection pole advantageously has an inner channel, which is part of a cooling circuit and is flowed through by a temperature control medium, in particular a cooling medium. As a result, targeted cooling of the terminal pole is possible.
Das Distanzelement mit dem einteilig angeformten Anschlusspol besteht bevorzugt aus Aluminium, welches sich bei der Verwendung in Akkublocks als vorteilhaft erwiesen hat.The spacer with the integrally molded terminal pole is preferably made of aluminum, which has proven to be advantageous when used in battery packs.
Das Distanzelement mit dem Anschlusspol ist in einem elektrisch isolierenden Material des Deckels formschlüssig gehalten, vorzugsweise von dem Material des Deckels umspritzt, so dass das Distanzelement mechanisch fest mit dem Deckel verbunden sind. Hierzu hat jedes Distanzelement an seinen Enden eine äußere Aufnahmenut, die sich über die Höhe des Distanzelements über eine Seitenfläche bis auf die andere Seitenfläche Distanzelementes erstreckt, also eine umlaufende äußere Aufnahmenut bildet. An dem einen Ende des Distanzelementes liegt die Aufnahmenut zwischen dem Anbindungsabschnitt des Anschlusspols und dem Distanzelement selbst und wird beim Einspritzen des Deckelmaterials vollständig gefüllt. Das Deckelmaterial oder ein Boden des Deckels verschließt den zum Boden offenen Kanal des Distanzelements, wodurch ein geschlossener Kühlkreislauf ausgebildet ist.The spacer with the terminal pole is positively held in an electrically insulating material of the lid, preferably encapsulated by the material of the lid, so that the spacer element are mechanically fixedly connected to the lid. For this purpose, each spacer element has at its ends an outer receiving groove, which extends over the height of the spacer element via a side surface to the other side surface spacer element, that forms a peripheral outer receiving groove. At one end of the spacer element, the receiving groove between the connection portion of the terminal pole and the spacer element itself and is completely filled during injection of the lid material. The lid material or a bottom of the lid closes the channel open to the bottom of the spacer element, whereby a closed cooling circuit is formed.
Weitere Merkmale der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und der Zeichnung, in der ein nachfolgend beschriebenes Ausführungsbeispiel der Erfindung dargestellt ist. Es zeigen:Further features of the invention will become apparent from the other claims, the description and the drawing, in which an embodiment of the invention described below is shown. Show it:
Der in
Die Anschlussschienen
Wie aus der schematischen Ansicht in
Moderne Flachzellen
Die Flachzellen
Je zwei Ableiter
Die Ableiter
Die Kanäle
Oberhalb der Klemmelemente
Der teilperspektivischen Darstellung nach
Jede Kontaktvorrichtung
Wie in
Das erste bzw. das letzte Distanzelement
Die
Wie
Das Distanzelement
Die Anordnung des Monoblocks
Der Monoblock
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010052514A DE102010052514A1 (en) | 2010-11-26 | 2010-11-26 | Rechargeable battery block, has housing for accommodating flat rechargeable battery cells, and contact device consisting of spacer element and clamping element, where elements are designed as one-piece with plus and minus poles of block |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010052514A DE102010052514A1 (en) | 2010-11-26 | 2010-11-26 | Rechargeable battery block, has housing for accommodating flat rechargeable battery cells, and contact device consisting of spacer element and clamping element, where elements are designed as one-piece with plus and minus poles of block |
Publications (1)
Publication Number | Publication Date |
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DE102010052514A1 true DE102010052514A1 (en) | 2012-05-31 |
Family
ID=46049606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102010052514A Pending DE102010052514A1 (en) | 2010-11-26 | 2010-11-26 | Rechargeable battery block, has housing for accommodating flat rechargeable battery cells, and contact device consisting of spacer element and clamping element, where elements are designed as one-piece with plus and minus poles of block |
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DE (1) | DE102010052514A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112013004522B4 (en) | 2012-09-18 | 2023-10-12 | Toyota Jidosha Kabushiki Kaisha | Battery, battery pack and method of making a battery |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6190797B1 (en) * | 1997-09-05 | 2001-02-20 | Matsushita Electric Industrial Co., Ltd. | Method of manufacturing an electrode plate assembly for lead accumulator and device therefor |
US20050031946A1 (en) * | 2003-08-06 | 2005-02-10 | Kruger Duane D. | Battery assembly and method of making same |
WO2007121445A2 (en) * | 2006-04-18 | 2007-10-25 | Securaplane Technologies, Inc. | Battery busing scheme |
US20090181298A1 (en) * | 2008-01-10 | 2009-07-16 | Eaglepicher Energy Products Corporation | Integral electrochemical device |
-
2010
- 2010-11-26 DE DE102010052514A patent/DE102010052514A1/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6190797B1 (en) * | 1997-09-05 | 2001-02-20 | Matsushita Electric Industrial Co., Ltd. | Method of manufacturing an electrode plate assembly for lead accumulator and device therefor |
US20050031946A1 (en) * | 2003-08-06 | 2005-02-10 | Kruger Duane D. | Battery assembly and method of making same |
WO2007121445A2 (en) * | 2006-04-18 | 2007-10-25 | Securaplane Technologies, Inc. | Battery busing scheme |
US20090181298A1 (en) * | 2008-01-10 | 2009-07-16 | Eaglepicher Energy Products Corporation | Integral electrochemical device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112013004522B4 (en) | 2012-09-18 | 2023-10-12 | Toyota Jidosha Kabushiki Kaisha | Battery, battery pack and method of making a battery |
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