Battery cell series group, battery module with battery cell series group and automobile

Abstract

The invention discloses a battery cell series connection group, a battery module with the battery cell series connection group and an automobile. The battery cell series connection group comprises a plurality of battery cells, the positive pole lug of one of the two adjacent battery cells and the negative pole lug of the other battery cell are laminated and welded to form a cascade welding area; the positive pole lug and / or the negative pole lug of the battery cell at the end part and the cascade welding area are / is provided with a switching collection sheet; the switching collection sheet extends towards the upper end of the battery cell series group; and the upper end of the switching collection sheet extends out of the battery cell series group. Therefore, quick installation of the collection plate can be realized on the battery cell series connection group, connecting pieces such as screws are not added, the cost and the weight of the battery module are reduced, and quick collection of the voltage and the temperature of the battery module can be realized, so that the production efficiency of the battery module can be improved, and the assembly cost of the battery module is reduced.

Description

technical field [0001] The invention belongs to the field of batteries, and in particular relates to a battery cell series group, a battery module and an automobile with the same. Background technique [0002] With the continuous popularization of new energy vehicles, the requirements for the use of power batteries in new energy vehicles are becoming higher and higher. Fast assembly can reduce costs and increase production efficiency. [0003] The acquisition circuit of the traditional module is on the top of the module, and the flexible circuit board or wire harness is used for acquisition, but the assembly efficiency of the wire harness is low. The connection end uses screws or ultrasonic welding, but the screw connection takes up space. , increasing the system cost; the flexible circuit board requires enough space to weld the nickel sheet used for the collection end to the part that needs to be collected, especially in a single-string module, the flexible circuit board o...

AI Technical Summary

Problems solved by technology

[0003] The acquisition circuit of the traditional module is on the top of the module, and the flexible circuit board or wire harness is used for acquisition, but the assembly efficiency of the wire harness is low. The connection end uses screws or ultrasonic welding, but the screw connection takes up space. , increase the system cost; the flexible circuit board requires enough space, and the nickel sheet used for the collection end is welded with the part that needs to be collected, especially in a single-string module, the flexible circuit board often has insufficient space to collect

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