Lithium ion battery module and high-capacity lithium ion battery

Abstract

The invention discloses a lithium ion battery module, comprising a battery clamp on which a plurality of battery inserting holes are arranged, wherein the battery inserting holes are distributed according to a matrix; a plurality of battery series connection pieces embedded into the battery inserting holes; and a plurality of unit batteries which are inserted into the battery inserting holes and are connected with the battery series connection pieces. The battery clamp is composed of an insulation holder located at a lower layer and a conductive holder located at an upper layer. The insulation holder and the conductive holder are arranged closely and are fixedly connected. A plurality of insulation holder holes distributed according to the matrix are produced on the insulation holder. A plurality of conductive holder holes distributed according to the matrix are produced on the conductive holder. The insulation holder holes and the conductive holder holes form the battery inserting holes. The battery series connection pieces are in elastic contact connection with the hole walls of the conductive holder holes. The battery module is compact and stable in structure, convenient for assembly and good in heat dissipation, and a traditional parallel connection mesh structure is removed.

Description

technical field [0001] The present application relates to the technical field of batteries, in particular to a lithium-ion battery module and a lithium-ion high-capacity battery composed of a plurality of such battery modules. Background technique [0002] Lithium-ion rechargeable battery is currently the battery with the highest specific energy and the longest service life. Its technology has matured and its production volume is huge, and it has entered various fields of people's lives. Existing cylindrical lithium-ion battery modules generally include a battery fixture made of fully insulating material with numerous battery insertion holes, a large number of battery series sheets embedded in each battery insertion hole, and embedded in each battery insertion hole at the same time. A sheet of parallel network connected in contact with each battery series sheet, respectively inserted in each battery insertion hole and connected (directly contacted or welded) to the correspon...

AI Technical Summary

Problems solved by technology

Moreover, the components welded with connecting pieces are loose, difficult to move during operation, and large parts are more difficult to process, so they are not suitable for mechanized operations.

[0008] The method of using a spring piece (series piece with a spring claw) removes the negative electrode welding, but it is very troublesome to expand outward with the dovetail and dovetail groove, and the heat dissipation is not very good

Thermal jacket heat pipes and thermal paste work well for heat dissipation, but these add-ons serve no purpose other than temperature regulation, increasing cost and complexity

The multi-hole parallel frame has good electrical conductivity and good heat dissipation, but dozens of holes are stamped and stretched at the same time, which is difficult to process

Moreover, due to structural constraints, the elastic claws are very short, so the elastic force is difficult to control, and the inserted battery is also prone to skew

Images