The welding methods and processes of power lithium-ion batteries mainly include the following aspects:

Selection of welding method: Laser welding is generally used for welding power lithium-ion batteries, because laser welding has the characteristics of fast speed, high energy density, small heat affected zone, etc., and can achieve efficient and precise welding.

Preparation work before welding: Before welding, the battery needs to be cleaned as necessary to remove oil, dust and other impurities on the surface to ensure welding quality. At the same time, the battery needs to be fixed on a stable bracket to prevent the battery from moving during the welding process.

Determination of welding process parameters: The process parameters of laser welding include laser power, welding speed, focal length, etc. These parameters need to be selected and adjusted according to the battery material, thickness and other factors to achieve the best welding effect.

Detection of welding quality: After the welding is completed, the battery needs to be inspected for quality inspection to check whether there are weak welds, missing welds, etc. At the same time, necessary electrical performance tests need to be carried out to ensure that the battery's performance meets the requirements.

Post-processing: For welded batteries, necessary post-processing is required, such as cooling, removing welding slag, etc. At the same time, the batteries need to be packaged and labeled as needed for subsequent use and management.

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Discussion: Core technology of power lithium battery

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