Self-compensation adjusting mechanism and method for new energy battery module welding

Abstract

The invention discloses a self-compensation adjusting mechanism and method for new energy battery module welding, the self-compensation adjusting mechanism comprises a workbench and a welding gun mechanism with one side provided with a measuring seat, and the workbench is slidably connected with a supporting plate used for supporting the welding gun mechanism in the connecting line direction of the two sides of the welding gun mechanism; one side of the measuring seat is provided with a through groove for fixedly placing three sides of a to-be-measured battery and the end of one side of the to-be-measured battery, the other side of the measuring seat is fixedly connected with one side of the supporting plate, the other side of the welding gun mechanism is provided with an elastic reset mechanism for buffering or resetting the supporting plate, and the elastic reset mechanism is installed at the upper end of the workbench. The workbench is provided with an adjusting driving assembly for pushing the other side end of the battery to be detected to translate towards the direction of the elastic reset mechanism, and the rear end of the welding gun mechanism is provided with a clamping assembly for preventing the supporting plate from sliding; the function of automatically and accurately detecting the width difference value of the battery to be welded and the function of automatically adjusting the position of the welding gun according to the width difference value are integrated, and the welding gun mechanism has the advantages of being high in positioning accuracy, simple in structure and low in cost.

Description

technical field [0001] The invention relates to the technical field of battery module processing, and more specifically, it relates to a self-compensating adjustment mechanism and method for welding new energy battery modules. Background technique [0002] With the development of the new energy automobile industry, the production of new energy battery modules has received more and more attention; among them, the welding between the batteries that make up the battery module is a very important process. Such as figure 1 As shown, the battery module is composed of a plurality of rectangular batteries 1 vertically arranged and combined, and the extreme ends of adjacent rectangular batteries 1 are connected in series by welding; the traditional welding method between the rectangular batteries 1 is usually manually held. The welding torch welds the gap a between adjacent batteries. However, due to the extremely small width of the gap a between adjacent batteries, it is difficult ...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the battery module is composed of a plurality of rectangular batteries 1 vertically arranged and combined, and the extreme ends of adjacent rectangular batteries 1 are connected in series by welding; the traditional welding method between the rectangular batteries 1 is usually manually held. The welding torch welds the gap a between adjacent batteries. However, due to the extremely small width of the gap a between adjacent batteries, it is difficult for manual hand-held welding torch to accurately position and weld with the naked eye, which is time-consuming and laborious, resulting in the positioning accuracy of the welding torch. low welding efficiency, poor welding quality and high labor intensity;

[0003] In the existing automatic welding equipment, there are also driving mechanisms such as linear guide rails or cylinders to directly drive the translation of the welding torch to automatically adjust the position of the welding torch. Due to errors in production or packaging, there is a deviation in the width b between the same type of prismatic batteries 1. Therefore, the above-mentioned method of automatically adjusting the position of the welding torch is only applicable to the welding of battery modules composed of batteries of ideal standard sizes. To ensure The positioning accuracy of the welding torch also needs to be compensated and adjusted in the direction of the battery width b according to the corresponding width difference; the inventor tried to use the CCD sensor for detection feedback and compensate and adjust the position of the welding torch. The difference between the position and the theoretical position (that is, the difference of the width b) is used to adjust the position of the welding torch. However, the use of CCD sensors is not only costly, but also because the batteries are densely arranged, the width of the gap a between adjacent batteries is extremely small , the image detected by the CCD sensor is blurred, the boundary is not clear, the contrast is not strong, and the difference in width b between each group of adjacent batteries cannot be accurately judged. Therefore, in order to improve the accuracy of welding positioning, it is necessary to provide a battery module The self-compensating auxiliary mechanism for welding solves the above technical problems

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