DE102010036062A1 - Rechargeable battery pack has sealing seams that are provided with retaining strips which are retained within common housing in which flat cells are mechanically held - Google Patents
Rechargeable battery pack has sealing seams that are provided with retaining strips which are retained within common housing in which flat cells are mechanically held Download PDFInfo
- Publication number
- DE102010036062A1 DE102010036062A1 DE102010036062A DE102010036062A DE102010036062A1 DE 102010036062 A1 DE102010036062 A1 DE 102010036062A1 DE 102010036062 A DE102010036062 A DE 102010036062A DE 102010036062 A DE102010036062 A DE 102010036062A DE 102010036062 A1 DE102010036062 A1 DE 102010036062A1
- Authority
- DE
- Germany
- Prior art keywords
- battery pack
- housing
- retaining strips
- pack according
- flat
- 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
- 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 of a single cell or a single battery
- H01M50/131—Primary casings, jackets or wrappings of a single cell or a single battery characterised by physical properties, e.g. gas-permeability or size
-
- 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 of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/121—Organic material
-
- 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
-
- 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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
-
- 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
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
-
- 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
-
- 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
- H01M10/0486—Frames for plates or membranes
-
- 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
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- 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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
- H01M50/557—Plate-shaped terminals
-
- 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
Abstract
Description
Die Erfindung betrifft einen Akkupack bestehend aus einer Mehrzahl einzelner Flachzellen der im Oberbegriff des Anspruchs 1 genannten Gattung sowie eine Flachzelle gemäß dem Oberbegriff des Anspruchs 15.The invention relates to a battery pack consisting of a plurality of individual flat cells of the type mentioned in the preamble of
Es sind Akkupacks bekannt, die aus Flachzellen bestehen, wobei die Flachzellen in einem Gehäuse des Akkupacks mechanisch gehalten sind. Hierzu sind separate Befestigungsmittel erforderlich, die nach dem Einsetzen der Flachzellen in das Gehäuse angebracht werden. Solche Flachzellen bestehen aus wechselweise aufeinandergeschichteten Anodenfolien und Kathodenfolien, die jeweils durch Separatorfolien voneinander getrennt in einem Foliengehäuse angeordnet sind. Das Foliengehäuse weist eine umlaufende Siegelnaht auf, um eine im Foliengehäuse vorgesehene Elektrolytlösung dicht einzuschließen. Es ist bekannt, solche Flachzellen mit einem Rahmen zu versehen, der an der umlaufenden Siegelnaht angebracht ist und den Umfangsrand der Flachzellen umgibt. Dieser Rahmen verleiht der Siegelnaht eine größere Stabilität und dient zur Abstützung der Akkuzelle auf einem Gehäuseboden sowie zur Fixierung im Gehäuse des Akkupacks mittels der oben genannten Befestigungsmittel. Diese Rahmenkonstruktionen führen zu einem entsprechenden Herstellungsaufwand.There are known battery packs, which consist of flat cells, wherein the flat cells are mechanically held in a housing of the battery pack. For this purpose, separate fastening means are required, which are mounted after insertion of the flat cells in the housing. Such flat cells consist of mutually stacked anode foils and cathode foils, which are each separated by Separatorfolien arranged in a foil housing. The film housing has a circumferential sealing seam in order to tightly enclose an electrolyte solution provided in the film housing. It is known to provide such flat cells with a frame which is attached to the circumferential sealing seam and surrounds the peripheral edge of the flat cells. This frame gives the sealing seam greater stability and serves to support the battery cell on a housing bottom and for fixing in the housing of the battery pack by means of the above-mentioned fasteners. These frame designs lead to a corresponding production cost.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Akkupack zu schaffen, der einfacher im Aufbau ist. Ferner liegt die Aufgabe zugrunde, eine Flachzelle zu schaffen, die kostengünstiger in der Herstellung ist.The present invention has for its object to provide a battery pack that is simpler in construction. Further, the object is to provide a flat cell, which is less expensive to manufacture.
Die Aufgabe wird durch einen Akkupack mit den Merkmalen des Anspruchs 1 und durch eine Flachzelle mit den Merkmalen des Anspruchs 15 gelöst.The object is achieved by a battery pack having the features of
Die Anbringung von Halteleisten an Flachzellen ist wesentlich einfacher, und der Materialaufwand ist geringer. Toleranzen werden vermieden bzw. können einfacher ausgeglichen werden. Außerdem wird der Platzbedarf im Gehäuse des Akkupacks reduziert und wegen der Materialersparnis das Gewicht verringert.The attachment of retaining strips on flat cells is much easier, and the cost of materials is lower. Tolerances are avoided or can be compensated easier. In addition, the space required in the housing of the battery pack is reduced and reduced because of the material savings the weight.
Bei Flachzellen, die sowohl am unteren Rand als auch an mindestens einem Seitenrand die Siegelnaht aufweisen, kann eine Halteleiste an der Siegelnaht mindestens eines Seitenrands ausreichend sein, wenn auch an der Siegelnaht am unteren Rand eine Halteleiste angebracht ist. Es wird jedoch als vorteilhaft angesehen, an beiden seitlichen Siegelnähten Halteleisten zu befestigen, wodurch am unteren Rand der Flachzelle keine Halteleiste erforderlich ist.In the case of flat cells which have the sealing seam both at the lower edge and at least one side edge, a retaining strip on the sealing seam of at least one side edge may be sufficient, even if a retaining strip is attached to the sealing seam at the lower edge. However, it is considered advantageous to attach retaining strips on both lateral sealing seams, whereby no retaining strip is required at the lower edge of the flat cell.
Gemäß einer weiteren Ausgestaltung der Erfindung ist vorgesehen, dass die Vorrichtung zur Aufnahme der Halteleisten an der Innenseite einer Gehäusewand ausgebildete Aufnahmenuten sind. Auf diese Weise entfallen zusätzliche Befestigungsmittel, und die Flachzellen werden beim Einbringen in das Gehäuse gleichzeitig positioniert. Es ist außerdem vorteilhaft, dass die Halteleisten mindestens mit einem ihrer Enden über den Rand der Siegelnaht überstehen und Anlageflächen zur Abstützung an einem Gehäuseboden oder Gehäusedeckel aufweisen. Damit wird auch die Abstützung der Flachzelle in Längsrichtung der Halteleisten von den Halteleisten übernommen, so dass die Siegelnähte am oberen und unteren Rand der Flachzelle nicht am Gehäuse anliegen und damit keine mechanische Belastung durch das Gehäuse erfahren. Es wird als zweckmäßig angesehen, dass die Enden der Halteleisten etwa 0,5 mm bis 1,5 mm überstehen, vorzugsweise sollte dieser Überstand etwa 1,0 mm betragen.According to a further embodiment of the invention, it is provided that the device for receiving the retaining strips on the inside of a housing wall are formed receiving grooves. In this way, eliminates additional fasteners, and the flat cells are positioned simultaneously when introduced into the housing. It is also advantageous that the retaining strips survive at least one of its ends over the edge of the sealed seam and have contact surfaces for support on a housing bottom or housing cover. Thus, the support of the flat cell in the longitudinal direction of the retaining strips is taken over by the retaining strips, so that the sealing seams do not rest on the upper and lower edges of the flat cell on the housing and thus experience no mechanical stress through the housing. It is considered appropriate that the ends of the retaining strips survive about 0.5 mm to 1.5 mm, preferably this supernatant should be about 1.0 mm.
Vorzugsweise bestehen die Halteleisten aus Kunststoff und sind als Strangmaterial hergestellt und auf die gewünschte Länge geschnitten. Alternativ können die Halteleisten auch als Spritzgussteil gefertigt sein. Derartige Halteleisten können einfach und billig hergestellt werden und sind an die jeweiligen Maße der Flachzelle anpassbar. Es ist außerdem vorteilhaft, dass die Aufnahmenuten jeweils einen breiteren Innenabschnitt und einen engeren Schlitz aufweisen, wobei die Halteleisten in die Aufnahmenuten in deren Längsrichtung einschiebbar sind. Dadurch ist eine formschlüssige Fixierung in allen Richtungen gegeben, und in Längsrichtung der Halteleisten erfolgt die Abstützung über die bereits erwähnten Anlageflächen der Halteleisten.Preferably, the retaining strips are made of plastic and are produced as a strand material and cut to the desired length. Alternatively, the retaining strips can also be made as an injection molded part. Such retaining strips can be made simple and cheap and are adaptable to the respective dimensions of the flat cell. It is also advantageous that the receiving grooves each have a wider inner portion and a narrower slot, wherein the retaining strips are inserted into the receiving grooves in the longitudinal direction. As a result, a positive fixation is given in all directions, and in the longitudinal direction of the retaining strips, the support via the abovementioned contact surfaces of the retaining strips takes place.
Gemäß einer weiteren Ausgestaltung der Erfindung bestehen die Halteleisten aus zwei Leistenteilen, die an der Siegelnaht zusammengefügt sind. Dabei ist es zweckmäßig, dass die Leistenteile identische Profile aufweisen und an einer Anlagefläche zusammengefügt sind. Durch die Ausbildung als identische Leistenteile ist die Herstellung nur eines Profils erforderlich. Außerdem ist es vorteilhaft, dass die Leistenteile mit einem zur Flachzelle gerichteten Schenkel versehen sind und zwischen den Schenkeln der zusammengefügten Leistenteile ein Spalt gebildet ist, in dem die Siegelnaht aufgenommen ist.According to a further embodiment of the invention, the retaining strips consist of two strip parts, which are joined together at the sealed seam. It is expedient that the strip parts have identical profiles and are joined together on a contact surface. By training as identical parts of the parts, the production of only one profile is required. Moreover, it is advantageous that the strip parts are provided with a leg directed to the flat cell and between the legs of the assembled strip parts, a gap is formed, in which the sealing seam is received.
Gemäß einer alternativen Ausgestaltung der Aufnahmenuten besitzen diese einen Innenabschnitt, der aus zwei Außenbereichen und einem konkaven Mittelbereich gebildet ist. Für eine solche Form der Aufnahmenuten ist die Halteleiste aus zwei Haltebacken gebildet, die über ein Filmscharnier verbunden sind, wobei die Haltebacken an die Form der Außenbereiche der Aufnahmenuten angepasst sind. Die Halteleisten werden vorzugsweise mittels eines Klebers mit den Siegelnähten der Flachzellen verbunden. Um die Siegelnaht am unteren Rand der Flachzellen auch bei extremen Stößen auf das Gehäuse des Akkupacks zu schützen, wird vorgeschlagen, dass die Halteleisten über Federn an einem Gehäuseboden abgestützt sind. Solche Federn können aus Metall oder Kunststoff bestehen, wobei es möglich ist, jeder Flachzelle eine Feder zuzuordnen oder eine sich über die gesamte Länge des Akkupacks erstreckende Feder vorzusehen.According to an alternative embodiment of the receiving grooves they have an inner portion which is formed of two outer regions and a concave central region. For such a shape of the grooves, the retaining strip is formed from two retaining jaws, which are connected via a film hinge, wherein the retaining jaws are adapted to the shape of the outer regions of the grooves. The retaining strips are preferably by means of an adhesive with the sealing seams of the flat cells connected. In order to protect the sealed seam at the bottom of the flat cells, even in extreme shocks on the housing of the battery pack, it is proposed that the retaining strips are supported by springs on a housing bottom. Such springs may be made of metal or plastic, wherein it is possible to assign a spring to each flat cell or to provide a extending over the entire length of the battery pack spring.
Eine besonders vorteilhafte Ausgestaltung der Flachzelle besteht darin, dass das Foliengehäuse aus einer Folie gebildet ist, die am unteren Rand eines die Flachzelle bildenden Folienpakets umgeschlagen und an dessen Flachseiten angelegt ist, derart, dass die Folie an den seitlichen Rändern und am oberen Rand mittels einer Siegelnaht geschlossen ist.A particularly advantageous embodiment of the flat cell is that the film housing is formed of a film which is folded at the bottom of a flat film forming foil package and applied to the flat sides, such that the film at the lateral edges and at the top by means of a Sealed seam is closed.
Dies führt zu einer einfacheren Fertigung des Foliengehäuses, da an der unteren Kante der Flachzelle keine Schweiß- bzw. Siegelnaht angebracht werden muss. Dies führt nicht nur zu einer höheren Sicherheit im Hinblick auf die Dichtheit, sondern auch zu einem Platzgewinn, wodurch die Energiedichte des Akkublocks steigt.This leads to a simpler manufacture of the film housing, since no weld or sealing seam must be attached to the lower edge of the flat cell. This not only leads to greater safety in terms of tightness, but also to a gain in space, whereby the energy density of the battery pack increases.
Ausführungsbeispiele der Erfindung sind nachstehend anhand der Zeichnung näher erläutert. In der Zeichnung zeigt:Embodiments of the invention are explained below with reference to the drawing. In the drawing shows:
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Claims (16)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010036062A DE102010036062A1 (en) | 2010-09-01 | 2010-09-01 | Rechargeable battery pack has sealing seams that are provided with retaining strips which are retained within common housing in which flat cells are mechanically held |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010036062A DE102010036062A1 (en) | 2010-09-01 | 2010-09-01 | Rechargeable battery pack has sealing seams that are provided with retaining strips which are retained within common housing in which flat cells are mechanically held |
Publications (1)
Publication Number | Publication Date |
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DE102010036062A1 true DE102010036062A1 (en) | 2012-03-01 |
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Application Number | Title | Priority Date | Filing Date |
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DE102010036062A Withdrawn DE102010036062A1 (en) | 2010-09-01 | 2010-09-01 | Rechargeable battery pack has sealing seams that are provided with retaining strips which are retained within common housing in which flat cells are mechanically held |
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DE (1) | DE102010036062A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013075801A1 (en) * | 2011-11-23 | 2013-05-30 | Li-Tec Battery Gmbh | Electrical energy storage device with flat storage cells |
WO2013079080A1 (en) * | 2011-11-30 | 2013-06-06 | Ads-Tec Gmbh | Rechargeable battery pack |
DE102012011419A1 (en) | 2012-05-23 | 2013-11-28 | Ads-Tec Gmbh | Rechargeable battery block, has flat cell held in cuboid shaped housing of block, and supporting elements arranged at two edges of film stack of flat cell, where supporting elements are in force connection with retaining strips of flat cell |
DE102013016783A1 (en) | 2013-10-10 | 2015-04-16 | Daimler Ag | Single cell for a battery and battery |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008106946A2 (en) * | 2007-03-05 | 2008-09-12 | Temic Automotive Electric Motors Gmbh | Power storage cell with heat conducting plate |
DE202009009179U1 (en) * | 2009-07-02 | 2009-09-03 | Ads-Tec Gmbh | Conditioning a battery cell |
DE102008061277A1 (en) * | 2008-12-10 | 2010-06-24 | Conti Temic Microelectronic Gmbh | energy storage |
-
2010
- 2010-09-01 DE DE102010036062A patent/DE102010036062A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008106946A2 (en) * | 2007-03-05 | 2008-09-12 | Temic Automotive Electric Motors Gmbh | Power storage cell with heat conducting plate |
DE102008061277A1 (en) * | 2008-12-10 | 2010-06-24 | Conti Temic Microelectronic Gmbh | energy storage |
DE202009009179U1 (en) * | 2009-07-02 | 2009-09-03 | Ads-Tec Gmbh | Conditioning a battery cell |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013075801A1 (en) * | 2011-11-23 | 2013-05-30 | Li-Tec Battery Gmbh | Electrical energy storage device with flat storage cells |
WO2013079080A1 (en) * | 2011-11-30 | 2013-06-06 | Ads-Tec Gmbh | Rechargeable battery pack |
DE102012011419A1 (en) | 2012-05-23 | 2013-11-28 | Ads-Tec Gmbh | Rechargeable battery block, has flat cell held in cuboid shaped housing of block, and supporting elements arranged at two edges of film stack of flat cell, where supporting elements are in force connection with retaining strips of flat cell |
DE102013016783A1 (en) | 2013-10-10 | 2015-04-16 | Daimler Ag | Single cell for a battery and battery |
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R082 | Change of representative |
Representative=s name: PATENTANWAELTE DIPL.-ING. WALTER JACKISCH & PA, DE |
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R081 | Change of applicant/patentee |
Owner name: ADS-TEC GMBH, DE Free format text: FORMER OWNER: ADS-TEC GMBH, 70771 LEINFELDEN-ECHTERDINGEN, DE Effective date: 20141202 |
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