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Battery cell with surge protector

A battery cell and protection device technology, applied in the field of battery cells, to achieve the effect of cost saving and cost reduction

Inactive Publication Date: 2016-04-27
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] If such a safety function of the battery cell is to be provided, time and cost expenditures are incurred during production

Method used

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  • Battery cell with surge protector
  • Battery cell with surge protector
  • Battery cell with surge protector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] combine Figure 1 to Figure 5 An advantageous embodiment of the battery cell 1 according to the invention is explained in detail. The battery cells 1 can in particular be rechargeable lithium-ion cells. exist Figure 1 to Figure 5 Among them, the battery cells 1 each have a prismatic cell housing 2 . The cell housing 2 here consists of metal, in particular stainless steel or an aluminum alloy. The cell housing 2 of the battery cell 1 advantageously prevents moisture from penetrating into the battery cell 1 .

[0027] In the case of the exemplary embodiment shown in the figures, the battery cells 1 each have a first cell connection 3 and a second cell connection 4 . The first cell terminal 3 is here connected in an electrically conductive manner to the positive electrode of the battery cell 1 . In this case, the same potential is applied to the cell housing 2 as to the cell terminals 3 of the battery cells 1 . A second cell connection 4 of the battery cell 1 is ele...

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PUM

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Abstract

The invention relates to a battery cell (1) comprising a cell housing (2), a first electrode with a first polarity, a second electrode with a second polarity, and a surge protector for forming a short-circuit between the first electrode and the second electrode. The surge protector comprises a first contact element (6), which is inserted into an opening (9) of the cell housing (2) and which is connected to the first electrode in an electrically conductive manner, and a second contact element (7) at a distance from the first contact element (6), said second contact element being connected to the second electrode in an electrically conductive manner. The first contact element (6) is designed to contact the second contact element (7) in an electrically conductive manner in order to form a short-circuit between the first electrode and the second electrode if a cell housing internal pressure (13) exceeds a surrounding pressure by a first threshold. Furthermore, the first contact element (6) is designed to at least partly release the opening (9) of the cell housing (2) if a cell housing internal pressure (13) exceeds a surrounding pressure by a second threshold.

Description

technical field [0001] The invention relates to a battery cell comprising a cell housing, a first electrode having a first polarity, a second electrode having a second polarity and a An overvoltage protection device forming a short circuit between the second electrodes, wherein the overvoltage protection device comprises a first electrode that is inserted into the opening of the cell housing and is electrically conductively connected to the first electrode. a contact element, and spaced apart from the first contact element, includes a second contact element electrically conductively connected to the second electrode, wherein the first contact element is configured for when the internal pressure of the cell housing Conductively contacting the second contact element when ambient pressure is exceeded by a first threshold magnitude for forming a short circuit between the first electrode and the second electrode. Background technique [0002] Battery cells, in particular recharg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M2/34
CPCH01M2200/20H01M50/3425H01M50/578Y02E60/10
Inventor M.科尔贝尔格
Owner ROBERT BOSCH GMBH
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