End plate and side plate laser welding device for square lithium battery module

Abstract

The invention relates to an end plate and side plate laser welding device for a square lithium battery module. The device is mainly composed of a bottom plate, an end face fixed limiting plate, an endface movable limiting plate, side face supporting plates, a welding pressing plate, an insulating positioning plate, end plate positioning strips, an upper pressing plate, an anti-splashing protection plate and an end face pressing mechanism. The end plate and side plate laser welding device for the square lithium battery module is convenient to operate, and when in use, only the components of the square lithium battery module need to be placed in the device according to the process sequence and positioned, and then the end face pressing mechanism can be operated to press the module to the process length, so that the requirement of laser welding between an end plate and a side plate of the module is met; the laser welding device is low in manufacturing cost, stable and reliable in welding quality and good in compatibility with laser welding equipment, improves the utilization rate of the existing laser welding equipment, reduce the cost burden in the product development process of anenterprise, and is particularly suitable for application in laboratories or small batch production places.

Description

technical field [0001] The invention relates to the field of lithium battery module manufacturing, in particular to a laser welding device for end and side plates of a square lithium battery module. Background technique [0002] In the manufacturing process of prismatic lithium-ion battery PACK, the module forming process is indispensable. In this process, the module is first extruded to the length of the process by extruding the end plates at both ends of the module, and then the laser welding equipment is turned on. Welding is performed at the interface between the end plates and side plates surrounded by the unit cells in groups, so that the components of the module are finally connected and integrated. [0003] In order to meet the diversified needs of the market, on the one hand, lithium battery manufacturers manufacture a variety of battery modules; on the other hand, new product development and experiments also adopt a variety of design ideas and new production proces...

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Problems solved by technology

[0003] In order to meet the diversified needs of the market, on the one hand, lithium battery manufacturers manufacture a variety of battery modules; on the other hand, new product development and experiments also adopt a variety of design ideas and new production processes. The laser welding process of the end plate and side plate is also different. However, the existing laser welding equipment of the enterprise is difficult to be compatible with this, resulting in a low utilization rate of the equipment, and if the purchase of new equipment will increase the cost burden of the enterprise , in the pilot test occasion of new product development, because the product has not yet been fully formed, the variety is complex and changeable, so this situation will become more prominent

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