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A processing technology for a pole body of a power battery

A processing technology and power battery technology, which is applied in the direction of batteries, battery pack parts, battery boxes/coatings, etc., can solve problems such as different thermal expansion coefficients, complicated manufacturing processes, and oxide films on riveting parts

Inactive Publication Date: 2016-06-22
江苏国泰之光新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • A processing technology for a pole body of a power battery
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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 for a pole body of a power battery, which comprises the following steps: (1) busbar forming; (2) sealing disk pole processing; (3) sealing disk welding of the busbar and the sealing disk pole ; (4) The busbar is grooved to form multiple busbars, and adjacent busbars have interval grooves; (5) The entrance of the busbar is chamfered; (6) The edge of the lower part of the busbar is chamfered; (7) Nickel plating treatment. The self-internal resistance of the pole body of the power battery prepared by the method of the invention is relatively small, and the process is simplified and material loss 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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Patent Type & Authority Patents(China)
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