Surface-mounted protecting plate and battery pack with same

Abstract

The invention discloses a surface-mounted protecting plate and a battery pack with the protecting plate. The surface-mounted protecting plate comprises a protecting plate base material and a plurality of patch nickel straps arranged at the upper side of the protecting plate base material, wherein an opening is formed in one side, opposite to a welding part, of the protecting plate base material, and a plurality of nickel bricks are arranged at the lower side, near to the edge, of the protecting plate base material. Cylindrical batteries are connected with the patch nickel straps of the surface-mounted protecting plate of the battery pack in a spot welding manner, wherein electrodes on the top end of each cylindrical battery are led to the protecting plate by being in connection with the nickel straps and are connected with the nickel bricks arranged at the bottom side of the protecting plate in the spot welding manner, and internal circuits which are connected with the patch nickel straps and the nickel bricks are arranged on the protecting plate base material so as to connect the cylindrical batteries in sequence and in series. The surface-mounted protecting plate has the advantages that a battery production technology is simplified, the multi-station spot welding is combined, the spot welding frequency is reduced, the spot welding defect rate is greatly reduced, the production and operation are simple, the structure stability is relatively high, the battery production efficiency is improved to a large extent, simultaneously the automatic production can be realized, and the high-efficiency, high-quality and low-cost product delivery is ensured.

Description

technical field [0001] The invention is used in the field of production and manufacture of battery packs, and in particular relates to a patch-type protective plate and a battery pack equipped with the protective plate. Background technique [0002] At present, the protective plates of four-string cylindrical lithium-ion battery packs mostly use nickel-bonded bricks and nickel strips on the batteries to be welded to realize the multi-string combination of batteries. Multiple nickel bricks are set on the protective plate, and each nickel brick is on the nickel strip at a point. During the welding process, due to the difference in spot welding position and height, three spot welding machines are required to be divided into three different stations to complete the spot welding. Among them, nickel strips will be repeatedly stacked and spot welded on the battery, although the cost of nickel strips is relatively high. Low, but there are many and scattered stations, which have the ...

AI Technical Summary

Problems solved by technology

[0002] At present, the protective plates of four-string cylindrical lithium-ion battery packs mostly use nickel-bonded bricks and nickel strips on the batteries to be welded to realize the multi-string combination of batteries. Multiple nickel bricks are set on the protective plate, and each nickel brick is on the nickel strip at a point. During the welding process, due to the difference in spot welding position and height, three spot welding machines are required to be divided into three different stations to complete the spot welding. Among them, nickel strips will be repeatedly stacked and spot welded on the battery, although the cost of nickel strips is relatively high. Low, but there are many and scattered stations, which have the defects of high quality risk and low production efficiency. Some manufacturers use special nickel strips in order to avoid stacking spot welding of nickel strips. Due to the large punching area of ​​special nickel strips, the cost is expensive. In terms of price lost competitive advantage

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