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Explosion-proof sheet and explosion-proof structure and power battery of explosion-proof sheet

An explosion-proof structure, power battery technology, applied in the direction of structural parts, battery pack components, circuits, etc., can solve the problems of difficulty in ensuring the reliability of explosion-proof performance, failure to meet battery safety requirements, and difficulty in controlling the depth of indentation, etc., to achieve Low processing cost, simple structure and convenient installation

Inactive Publication Date: 2010-02-10
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the indentation is not easy to process and it is difficult to control the indentation depth, so it is difficult to guarantee the reliability of the explosion-proof performance. Simply making indentations on the battery case cannot meet the safety requirements of the battery.

Method used

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  • Explosion-proof sheet and explosion-proof structure and power battery of explosion-proof sheet
  • Explosion-proof sheet and explosion-proof structure and power battery of explosion-proof sheet
  • Explosion-proof sheet and explosion-proof structure and power battery of explosion-proof sheet

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, as an embodiment of the present invention, explosion-proof indentation 2 is processed on the explosion-proof sheet 1 of the present invention, and the material of the explosion-proof sheet 1 and the battery cover plate 5 can be the same, such as aluminum alloy or pure aluminum. The explosion-proof disc 1 is in the shape of a rectangle with rounded corners and a thickness of 0.2-0.4mm. The shape of explosion-proof indentation 2 is shape, the depth of explosion-proof indentation 2 is 0.01-0.03mm. to combine image 3 and Figure 4 As shown, the cover plate 5 of the power battery is provided with an exhaust opening 6 for placing the explosion-proof disk 1, and the explosion-proof disk 1 is placed on the exhaust opening 6, and it is welded by laser or electron beam welding, so that The explosion-proof disk 1 and the cover plate 5 form...

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Abstract

The invention discloses an explosion-proof sheet (1) used for an explosion-proof structure of a power battery and aims to provide an explosion-proof sheet (1) which is convenient for processing an explosion-proof indentation (2), and the processing depth of the explosion-proof indentation (2) can be controlled accurately. The explosion-proof indentation (2) is processed and formed on the explosion-proof sheet (1). The invention also discloses the explosion-proof structure for the power battery and the power battery which contain the explosion-proof sheet (1). The explosion-proof sheet and theexplosion-proof structure are mainly used for preventing the power battery from exploding caused by increased inner pressure in unexpected situations.

Description

technical field [0001] The invention relates to an explosion-proof disc used in an explosion-proof structure of a power battery. In addition, the invention also relates to an explosion-proof structure and a power battery using the explosion-proof sheet. Background technique [0002] With the improvement of human awareness of environmental protection, it will be an inevitable trend in the future that electric vehicles and hybrid vehicles will replace the current fuel vehicles. As the core power source of electric vehicles - the power battery pack, its safety is particularly prominent. When the battery is abnormal, a large amount of gas will be generated inside the battery, causing the internal pressure of the battery to increase sharply. At this time, if the large amount of gas generated cannot be removed in time, the battery will explode and cause a safety accident. [0003] In order to avoid the occurrence of an explosion, an explosion-proof structure is generally arrange...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M50/342
CPCY02E60/12Y02T10/7005Y02T10/7011Y02E60/10
Inventor 赖庆朱建华石晶晶
Owner BYD CO LTD
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