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Method for connecting two battery poles, which consist of unidentical materials, of two battery cells, and battery unit

A technology for battery cells and battery cells, applied in electrical components, battery pack parts, high-frequency current welding equipment, etc., can solve the problems of high additional cost, difficult to control processing technology, and difficult to manufacture welding connections.

Active Publication Date: 2015-01-14
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The following problem arises when connecting battery poles of different poles: in particular a battery pole made of copper must be connected to a battery pole made of aluminum
However, the method known from said document has the problem that the welding of battery poles made of different materials is relatively difficult to control in terms of processing technology due to intermetallic phases in the welding region of the two poles
All in all, this means that a welded connection between two battery poles made of different materials is difficult to produce and requires relatively high additional expenditure to protect the connection point from external influences, in particular from corrosion

Method used

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  • Method for connecting two battery poles, which consist of unidentical materials, of two battery cells, and battery unit
  • Method for connecting two battery poles, which consist of unidentical materials, of two battery cells, and battery unit
  • Method for connecting two battery poles, which consist of unidentical materials, of two battery cells, and battery unit

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Embodiment Construction

[0018] exist figure 1 A battery cell 100 is shown in a greatly simplified manner, which consists of a large number of battery cells 10 connected to each other. exist figure 1 In the drawings, only six battery cells 10 are shown connected to each other for the sake of simplicity, however, in practice, such a battery cell 100 may also consist of more than six battery cells 10 . Such a battery cell 100 is preferably, but not limited to, use in motor vehicles, in particular as part of a hybrid drive. Furthermore, the battery cells 10 are in particular lithium-ion battery cells 10 with a positive electrode 1 and a negative electrode 2 in each case. In the embodiment shown, all six battery cells 10 are electrically connected in series such that the individual cell voltages of the battery cells add up. It is of course also within the scope of the invention that the battery cells 10 are electrically connected in parallel at least partially.

[0019] A feature of the battery cell 1...

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Abstract

The invention relates to a method for connecting two battery poles (1, 2), which consist of unidentical materials, of two battery cells (10) by means of an integrally bonded and / or non-positive and / or positive connection. According to the invention, the two battery poles (1, 2) are connected to each other in a connecting region (11) by means of an electromagnetic pulse method, in particular by a magnetic pulse weld.

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1 for connecting two battery poles made of different materials of two battery cells. Furthermore, the invention relates to a battery cell with interconnected battery cells according to the preamble of claim 3 . Background technique [0002] Such a method or such a battery cell is known from DE 10 2009 046 505 A1. In this known method or its cells, it is provided that the poles of the first battery cell and the poles of the second battery cell are directly connected to one another by means of a material-fit, force-fit or form-fit connection. In this case, the two poles of the two battery cells consist of different materials, in particular copper and aluminum. As the connection method, a welding method and a riveting method are suggested, or alternatively, a screw joint of the two battery poles is suggested. [0003] Depending on the structure, lithium-ion batteries have battery pole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/20H01M50/516
CPCH01M2/206H01M50/516Y02E60/10B23K13/01
Inventor R.拉姆赛尔
Owner ROBERT BOSCH GMBH
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