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Processing technology of power battery post body

A processing technology and power battery technology, which is applied in the direction of batteries, battery pack parts, battery boxes/coatings, etc., can solve the problems of large material loss, increased internal resistance of connections, and oxide films on riveting parts, etc.

Inactive Publication Date: 2014-10-01
江苏国泰之光新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the riveting process used in the pole body of the vehicle power battery, especially the lithium-ion battery, can only ensure that the connection between two different parts is through a physical connection, not as a whole. The inconsistency of the thermal expansion coefficients between them leads to gaps in the riveting parts. At the same time, it is possible that due to heat or other reasons, an oxide film may be formed on the riveting parts, resulting in an increase in the internal resistance of the connection. In addition, the previous pole body manufacturing process is complicated and the material loss is large.

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  • Processing technology of power battery post body
  • Processing technology of power battery post body

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Embodiment Construction

[0023] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0024] Such as figure 1 , 2 As shown, the manufacturing method of the power battery pole body in this embodiment includes the following steps:

[0025] Step S101, forming the busbar:

[0026] Utilize mold to make material 101 as figure 2 The shape of the bus bar semi-finished product 102 shown in , the bus bar is formed by stamping or casting.

[0027] Step S102, processing the sealing disc pole:

[0028] Using machining methods to process raw materials 201 such as figure 2 The sealed disc pole semi-finished product 202 shown in .

[0029] Step S103, welding the sealing plate between the bus bar and the sealing plate pole:

[0030] The semi-finished busbar 102 and the semi-finished sealing disc pole 202 are welded together by high-frequenc...

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Abstract

The invention discloses a processing technology of a power battery post body. The processing technology comprises the following steps: (1) formation of a bus bar; (2) processing of a seal disk post; (3) welding of the bus bar and a seal disk of the seal disk post; (4) groove formation of the bus bar, formation of a plurality of confluence pieces among which gap grooves are formed; (5) beveling at inlets of the confluence pieces; (6) beveling of at lower part edges of the confluence pieces; (7) treatment of nick plating. The power battery post body prepared by the method provided by the invention is relatively low in self resistance, so that the technology is simplified and the material consumption is reduced.

Description

technical field [0001] The invention relates to a processing technology for a pole body of a power battery. The pole body of the power battery prepared by the processing technology is suitable for lithium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, nickel-carbon batteries and other secondary batteries. Background technique [0002] At present, the riveting process used in the vehicle power battery pole body, especially the lithium-ion battery, can only ensure that the connection between two different parts is through physical connection, not as a whole. The inconsistency of the thermal expansion coefficient between them leads to a gap in the riveting part, and at the same time, an oxide film may be formed on the riveting part due to heat or other reasons, resulting in an increase in the internal resistance of the connection. In addition, the previous pole body manufacturing process is complicated and the material loss is large. Contents of the invent...

Claims

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Application Information

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IPC IPC(8): H01M2/30H01M50/502H01M50/507H01M50/562H01M50/564H01M50/566
CPCH01M2220/20H01M50/543Y02E60/10
Inventor 周志雄王更生张宝库殷永新马阳杨岳军周国泰
Owner 江苏国泰之光新能源科技有限公司
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