Battery cell lead structure for battery module

Abstract

The invention relates to a battery cell lead structure for a battery module. The battery cell lead structure comprises a bottom support for mounting the battery module, wherein the bottom support is of an open tank structure, and a module cathode connecting end and a module anode connecting end are respectively arranged on the side wall of the bottom support; the battery module comprises a plurality of battery packs which are arranged in parallel, and each battery pack comprises a plurality of battery cells which are sequentially arranged along the length direction of the bottom support, the battery cells on the outermost sides of battery packs are provided with support frames, locking screw rods are arranged between the support frames on two sides of the battery packs and are parallel tothe length directions of the battery packs, and two ends of the locking screw rods are fixed with the support frames on two sides of the battery packs; electric connecting pieces are arranged on wiring heads of the battery cells, extends towards two sides of the battery packs, are electrically connected with electric connecting heads on the support frames and are wave-shaped; and cover plates arearranged at the upper ends of the battery packs, and the lower plate surfaces of the cover plates prop against the electric connecting pieces. The wave-shaped electric connecting pieces prop against the cover plates, so that the conductance firmness between the electric connecting pieces and the battery cells can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of power batteries for new energy vehicles, in particular to a battery cell lead wire structure for a battery module. Background technique [0002] Battery modules are the "heart" of electric vehicles. The battery module is the core part of providing power energy for new energy vehicles such as electric vehicles and hybrid vehicles. It can be understood that battery cells are combined in series and parallel, and a battery monitoring and management device (MCN) is installed to manage and control them. The structural design of the battery module can often determine the performance and safety of a battery box. Its structure must support, fix and protect the battery cells. At the same time, how to meet the requirements of overcurrent, current uniformity, how to meet the control of battery cell temperature, and whether to cut off the power when there is a serious abnormality, to avoid chain reactions, etc., wi...

AI Technical Summary

Problems solved by technology

[0003] Existing battery modules mainly include battery cells and a supporting frame for supporting the battery cells. The connection between the cells and the outside world is through electrical connecting sheets. Since the cells are mostly standard parts, the electrical connecting sheets are mostly metal sheet structures. , when an electrical connection piece is connected to the terminal of a battery cell, it can also ensure electrical conduction. When multiple battery cells are arranged in parallel and spaced apart, when an electrical connection piece is connected to the terminal of multiple battery cells, sometimes it will be connected to the terminal There is a gap, and the electrical continuity between the electrical connection piece and the terminals of multiple cells cannot be ensured

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