A laser welding device for the side plate of a square lithium battery module
A laser welding and lithium battery technology, applied in laser welding equipment, welding equipment, electrolyte battery manufacturing, etc., can solve the problems of complex and changeable types, increase the cost burden of enterprises, and low equipment utilization, and achieve convenient operation and welding quality. Stable and reliable effect with low manufacturing cost
Active Publication Date: 2021-08-06
HEFEI GUOXUAN HIGH TECH POWER ENERGY
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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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[0039] Below in conjunction with specific embodiment and accompanying drawing, the present invention will be further described:
[0040] The existing prismatic lithium battery module structure is as follows: figure 1 and figure 2 As shown, end plates 121 are provided at both ends of the single cells 123 assembled in groups, and after pressing the end plates 121 to compress the module to a specified length, add side plates 122 to both sides of the module, and finally The module can be formed by welding the connection between the end plate 121 and the side plate 122 with laser welding equipment. The side plate 122 of the module is bent at the end face, so the connection gap between it and the end plate 121 (welding Seam) is located on the surface where the end plate 121 is located.
[0041] refer to Figure 3-Figure 5 As shown, a laser welding device for end and side plates of a square lithium battery module of the present invention includes a bottom plate 1, a fixed end pla...
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The invention relates to a laser welding device for end and side plates of a square lithium battery module. It consists of a pressing plate, a splash protection plate, and an end face pressing mechanism; the operation of the present invention is convenient. The tightening mechanism presses the module to the technical length, so as to meet the laser welding requirements between the module end plate and the side plate; the manufacturing cost of the present invention is low, the welding quality is stable and reliable, and it is well compatible with laser welding equipment It improves the utilization rate of existing laser welding equipment, reduces the cost burden in the product development process of enterprises, and is especially 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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IPC IPC(8): B23K26/24B23K26/70H01M10/058
CPCB23K26/24B23K26/70B23K26/702H01M10/058Y02E60/10Y02P70/50
Inventor 唐红跃王超李晓燕
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY