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Battery cell comprising a cover plate fixed in a housing by bonding

A technology for battery cells and casings, applied in electrical components, secondary batteries, battery pack components, etc., can solve problems such as complex structures

Active Publication Date: 2015-06-03
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these battery cells generally have a complex structure, in which a large number of different individual parts and a large number of processing methods of materials are used to assemble the entire battery cell

Method used

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  • Battery cell comprising a cover plate fixed in a housing by bonding
  • Battery cell comprising a cover plate fixed in a housing by bonding
  • Battery cell comprising a cover plate fixed in a housing by bonding

Examples

Experimental program
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Effect test

Embodiment Construction

[0029] figure 1 An exploded view of a conventional Li-ion battery cell is shown. It can be recognized that the battery cell comprises a plurality of individual components which have to be provided separately and which have to be assembled in a complex manner during production. Only the components and their features required for understanding the embodiments of the present invention are described here, and the remaining components of the battery unit are not described.

[0030] The battery cell 1 has a wound element 3 with a wound stack 5 consisting of a copper foil coated with anode material and an aluminum foil coated with cathode material and a plastic film between them made, the plastic film was used as a separator.

[0031] The current collectors 7, 9 are welded to the copper and aluminum foils for electrical contact, so that these current collectors are electrically connected to the anode and cathode of the wound element.

[0032] The wound element 3 is placed together...

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PUM

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Abstract

Battery cell, in particular a lithium-ion battery cell, in which a coil element, two current collectors and an electrolyte are accommodated in a housing (11). The housing consists of a container (13) and a cover arrangement, said cover arrangement comprising, inter alia, a cover plate (23) which is fixedly connected to the container (13) once internal components of the battery cell have been introduced. The cover plate (23) is bonded to an inner surface (37) of the container (13), for example, along a collar (29) with the aid of a layer consisting of adhesive (31). A sealing bead (33) of a sealing arrangement (32), which is formed by an O ring (41), for example, prevents the electrolyte which has been introduced into the housing (11) from coming into contact with the adhesive (31) and chemically attacking said adhesive.

Description

technical field [0001] The invention relates to a battery cell, especially a lithium-ion battery cell. The invention also relates to a motor vehicle having such a battery unit. Background technique [0002] A battery cell, sometimes called a battery cell, is used to chemically store electrical energy for use. Today battery cells are used for the energy supply of a large number of mobile devices. In the future, battery cells are to be used in particular for the energy supply of mobile electric vehicles or hybrid vehicles on land and water, or for the stationary intermediate storage of electrical energy from alternative energy sources. [0003] For this purpose, a large number of battery cells are often combined to form a plurality of battery packs. In order to utilize the available pack volume as efficiently as possible in this case, battery cells having a prismatic, for example cuboid, shape are used for this purpose. [0004] Due to its potentially high energy density, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/08H01M2/02H01M10/0525H01M50/171H01M50/184H01M50/186
CPCH01M10/0525H01M50/15H01M50/186H01M50/171H01M50/184Y02E60/10Y02P70/50
Inventor O.格伦特M.法伊格尔
Owner ROBERT BOSCH GMBH
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