Fully automatic spot welding machine for power battery pack electrodes

Abstract

The invention provides a full-automatic spot welding machine for a power battery pack electrode slice. The full-automatic spot welding machine comprises a rail, a plurality of jigs, a jig pushing-in mechanism, a jig transfer guide mechanism, a jig pushing-out mechanism, two spot welding heads, two three-axis motion mechanisms and a positioning clamping mechanism. The power battery pack electrode slice on which spot welding is about to be conducted is placed on the jigs to intermittently move forwards. The two spot welding heads are located on the two sides of the rail respectively and controlled by the three-axis motion mechanisms to move along three axes. The jigs are pushed in by the jig pushing-in mechanism for feeding, the fed jigs are pushed to spot welding positions one by one through the jig transfer guide mechanism and then are clamped through the positioning clamping mechanism, and then the jigs are pushed out through the jig pushing-out mechanism after spot welding is conducted through the spot welding heads. The intelligent user-related assembly line type full-automatic spot welding machine for the power battery pack electrode slice is high in efficiency, low in consumption, high in welding quality, and easy to link.

Description

technical field [0001] The invention relates to an automatic spot welding equipment for electrode sheets of power battery packs, especially suitable for the field of spot welding of electrode sheets of medium and large battery packs such as electric tools and electric vehicles. Background technique [0002] Large and medium-sized battery packs are mainly used in power tools, notebook computers, electric vehicles and other fields. At present, most manufacturers in China use semi-automatic spot welding, and its shortcomings are mainly manifested in: [0003] (1), welding labor intensity is high, and welding efficiency is low. [0004] (2) The qualified rate of welding is low, and it is easy to have defects such as virtual welding, deformation of the battery core, bonding of welding needles, and uneven solder joints. [0005] (3) The dedicated spot welding power source has a large investment and low utilization rate, which increases the cost of equipment. [0006] (4) The ex...

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Problems solved by technology

[0003] (1) High welding labor intensity and low welding efficiency

[0004] (2) The qualified rate of welding is low, and it is easy to have defects such as virtual welding, battery deformation, welding needle bonding, uneven solder joints, etc.

[0005] (3) The special spot welding power supply has a lot of investment and low utilization rate, which increases the cost of equipment

[0006] (4) The existing special equipment is relatively independent and cannot be connected with the customer's production line, which is not conducive to the transformation of the production line and affects the improvement of production efficiency

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