Cell module and side panel tightening apparatus and cell module side panel welding robot

Abstract

The invention discloses a cell module and side panel tightening apparatus and a cell module side panel welding robot. The cell module and side panel tightening apparatus at least comprises a base usedfor bearing a cell module, a long panel fixation apparatus and an end panel fixation apparatus; and by virtue of matching of the abovementioned components, positioning and tightening between every two of a long panel, end panels and the cell module is realized. The scheme is skillful in design, simple in structure and capable of realizing accurate positioning and tightening between every two of the long panel, the end panels and the cell module through matching of the multiple fixation apparatuses, thereby ensuring position accuracy, creating conditions for subsequent welding, facilitating improvement of welding precision, avoiding insufficient welding and framework deformation and effectively improving the welding quality and ensuring product consistency.

Description

technical field [0001] The invention relates to the field of battery module processing equipment, in particular to a battery module and side panel adhering device and a battery module side panel welding robot. Background technique [0002] In the production process of new energy battery packs, multiple cells are usually assembled into a cell module and the overall structure is fixed through side panels (including long panels on both sides and end panels at both ends). Currently, the most common way The connection between the side panel and the battery module is realized by welding. [0003] Before welding, it is necessary to make the long panels on both sides and the end panels at both ends correspond to the end surfaces and side surfaces of the battery module, and make the long panels and the end panels correspond to the positions to ensure the accuracy of the welding position. However, the existing The position matching process is mainly realized manually. The efficiency ...

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Problems solved by technology

[0003] Before welding, it is necessary to make the long panels on both sides and the end panels at both ends correspond to the end surfaces and side surfaces of the battery module, and make the long panels and the end panels correspond to the positions to ensure the accuracy of the welding position. However, the existing The position matching process is mainly realized manually. The efficiency of manual operation is low, and it is greatly affected by human factors. It is prone to position deviation between the side panel and the cell module, which will cause the welding accuracy of subsequent welding to be affected. Influence, prone to false welding, etc., and also easily lead to deformation of the final welded frame, affecting the structural stability of the final product, and at the same time cannot guarantee the consistency of the final product

[0004] In addition, the traditional welding process is mainly based on resistance welding. In the process of resistance welding, there are several factors that are crucial to welding quality: welding discharge voltage, welding pressure, welding needle of the welding head, in the existing welding process There is basically no detection and control

[0005] The welding voltage and welding current of the existing resistance welding machine have no feedback monitoring, and the welding head generally uses a compression spring, and the compression amount of the spring and the failure of the spring are not controlled; the welding pressure is unstable, and there is no monitoring for missing welding and wrong welding , or can only be manually inspected offline, software programming is cumbersome and inefficient

[0006] Moreover, the key factor affecting the quality of resistance welding in the process of resistance welding of cell modules is the surface quality of the welding needle, including welding wear and cleanliness. During the welding process of resistance welding, there will be an instantaneous Melting at high temperature, the molten material will stick to the welding pin, especially in the case of large-scale continuous welding, the surface of the welding pin will be slowly covered by the molten welding material, and at the same time it will be dirty. Abrasion, dirt or sticky foreign matter, resulting in poor welding, or even false welding

[0007] At the same time, in the welding process of the existing battery module, the coordinates of the input solder joints are used for welding. Since there are many solder joints on the battery module, if the coordinates are input, the programming is more complicated and error-prone

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