Connection method of terminals and busbars of lithium ion single battery

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...

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