Soft package lithium battery pack assembly structure

Abstract

The invention discloses a soft package lithium battery pack assembly structure. The soft package lithium battery pack assembly structure comprises a battery box, a bin gate, a positive connecting plate and a negative connecting plate which are located at the two ends of the batter box, and a lithium battery pack, wherein the bin gate is arranged at one end of the battery box, the negative electrode connecting plate is arranged on the bin gate, the lithium battery pack comprises a plurality of soft package batteries connected in series and a honeycomb-shaped heat exchange plate, the soft package batteries and the honeycomb-shaped heat exchange plate are aligned and pressed through an aluminum plate frame, a heat exchange frame is installed at the tail end of the heat exchange plate, and a heat conducting plate is installed on the inner side of the bin gate. The beneficial effects of the invention are that the soft package lithium battery pack assembly structure adopts a flexible assembly structure, the use of external fixing pieces is reduced, and the puncture risk is reduced during the battery is used, and meanwhile, the heat of the battery is led out through multiple groups of heat exchange structures in a multi-heat conduction manner, so that the heat is led out on the premise of not influencing the internal closed working environment of the battery, and the problem of serious battery aging caused by low-efficiency cooling of a traditional battery assembly structure is solved.

Description

technical field [0001] The invention relates to an assembly structure of a soft pack lithium battery pack, belonging to the technical field of battery manufacturing. Background technique [0002] In the application of electric vehicles, the lithium battery pack is the most common energy supply equipment; the lithium battery pack bag is mostly a square column structure, which is composed of a large number of lithium batteries connected in series and parallel, so the safety and electrical properties of the lithium battery The requirements are very high. The soft-pack lithium battery is a new battery structure developed in recent years, and a battery pack is formed by covering a liquid lithium-ion battery with a polymer shell. The structure is packaged with aluminum-plastic film. In the event of a safety hazard, the soft-pack battery will only blow up and crack at most, and there will be no leakage and explosion risks of the hard-pack battery. Packing and combining multiple gr...

AI Technical Summary

Problems solved by technology

[0003] The assembly structure of the existing soft-pack lithium battery packs is often fixed by bolts. When extrusion collisions occur, it is easy to cause damage to the battery pack structure by the fixed parts of the device. Moreover, the existing soft-pack lithium battery packs The assembly structure of the battery is often insulated internally during heat exchange, and cannot conduct heat in time. Long-term use will have a certain impact on battery life.

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