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Connection method of terminals and busbars of lithium ion single battery

A single battery and connection method technology, which is applied in the manufacture of battery pack components, battery boxes/jackets, electrolyte batteries, etc., can solve the problem that non-destructive testing of welding quality cannot be performed, rapid full inspection cannot be achieved, and welding quality is not controlled and other problems, to achieve the effect of low cost, good welding and high production efficiency

Pending Publication Date: 2019-07-02
天津蓝天特种电源科技股份公司
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AI Technical Summary

Problems solved by technology

The welding quality of overlapping welding cannot be tested non-destructively. It is necessary to conduct destructive inspection and evaluation after regular welding with samples. It is impossible to do a quick full inspection, and the welding quality is not controlled. It is easy to cause poor welding of the battery pack and cannot be found.

Method used

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  • Connection method of terminals and busbars of lithium ion single battery
  • Connection method of terminals and busbars of lithium ion single battery

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiment is only an illustration of the gist of the present invention, rather than limiting the protection scope of the present invention.

[0020] like figure 1 As shown, the present invention provides a method for connecting lithium-ion battery terminals and busbars, which includes the following steps:

[0021] 1) Position and press the output terminal 2 of the lithium-ion single battery 1 and the busbar 3 with tooling;

[0022] 2) Expose the output terminal 2 of the lithium-ion single battery and the welding connection surface 4 of the busbar;

[0023] 3) Connect the output terminal 2 of the lithium-ion single battery and the bus bar 3 by laser welding.

[0024] This implementation mode can be further realized through the following steps:

[0025] In the aforementioned method for connecting the terminals of t...

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Abstract

The invention provides a connection method of terminals and busbars of a lithium ion single battery. The connection method includes the following steps: 1) positioning and compacting the output terminals and the busbars of the lithium ion single battery by using a tool; 2) exposing welding joint surfaces of the output terminals and the busbars of the lithium ion single battery; and 3) connecting the output terminals and the busbars of the lithium ion single battery by laser beam welding. The connection method of the terminals and the busbars of the lithium ion single battery has the advantagesof reliable connection quality, good welding, high strength, strong overcurrent capability, convenient non-destructive testing, wide application range, low cost and high production efficiency.

Description

technical field [0001] The invention relates to the field of battery assembly, in particular to a method for connecting a terminal of a lithium-ion single battery and a bus bar. Background technique [0002] Lithium-ion batteries have the advantages of high voltage, high specific energy, many cycle times, and long storage time. They are not only widely used in portable electronic devices such as mobile phones, digital cameras and laptop computers, but also widely used in electric vehicles, electric In terms of large and medium-sized electric equipment such as bicycles and electric tools, the performance requirements of lithium-ion batteries are getting higher and higher. Large and medium-sized lithium-ion battery packs have high energy and high power. It is necessary to combine a large number of lithium-ion single cells in series to meet the requirements of long-term work with high current in actual use. In order to facilitate the combination, the capacity of the lithium-io...

Claims

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Application Information

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IPC IPC(8): H01M10/058H01M2/30H01M2/26
CPCH01M10/058H01M50/531H01M50/543Y02E60/10Y02P70/50
Inventor 田光魏军金晶龙
Owner 天津蓝天特种电源科技股份公司
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