Power battery top cover structure

Abstract

In the top cover structure of a power battery disclosed in the present invention, a first protrusion inclined to the outside is arranged on the battery pole, and the battery pole is placed in the pole hole of the top cover, and then the pole pole is placed on the pole. Injection molding is performed between the hole and the battery pole to protect the first protrusion and the outer peripheral side of the battery pole, and at the same time, the inner wall of the pole hole is covered to complete the fixed installation of the battery pole. The arrangement of the second protrusion and the locking recess, after the battery pole is placed in the pole hole of the top cover sheet, an insulating spacer is injection-molded between the pole hole and the battery pole to realize the installation on the top cover piece , which reduces installation accessories, reduces production costs, and reduces by more than 20%, and at the same time improves production efficiency, so that the yield and product quality are greatly improved.

Description

technical field [0001] The invention relates to the technical field of a power lithium battery, in particular to a top cover structure of a power battery. Background technique [0002] The power battery pole is mainly used in the power battery in the new energy vehicle, and the power battery mainly stores the input electric energy to prepare the power supply when the new energy vehicle is driving. However, in the prior art, the pole is formed by stamping, and then equipped with The aluminum ring is installed on the top cover sheet, and it must be installed on the top cover sheet through the aluminum ring and welding process. Therefore, the above-mentioned battery poles have many corresponding accessories, which makes the pole pole installation more time-consuming and easy to weld. Poor welding occurs, and the production cost is high. At the same time, the negative pole is formed by welding a copper plate and an aluminum plate through friction welding, which leads to the weld...

AI Technical Summary

Problems solved by technology

[0002] Power battery poles are mainly used in power batteries in new energy vehicles, and the power batteries mainly store the input electric energy for power supply when new energy vehicles are running. However, in the prior art, the poles are stamped and formed, and then equipped When installing on the top cover sheet, the aluminum ring must be installed on the top cover sheet through the aluminum ring and welding process. Therefore, there are many accessories corresponding to the above-mentioned battery poles, which makes it time-consuming to install the poles and is easy to weld during the welding process. Poor welding occurs, and the production cost is high. At the same time, the negative pole is formed by welding the copper plate and the aluminum plate through friction welding, resulting in the welding being easy to fall off, and the safety system is low.

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