Battery pack and battery module with the battery pack

Abstract

The present invention provides a battery pack, comprising: a plurality of thermally conductive separators, the plurality of thermally conductive separators are stacked, each of the thermally conductive separators includes two separator main bodies and a connecting body, and the two separator main bodies are laid flat and are spaced apart from each other, the connecting body is connected to the two separator main bodies; at least one heat pipe, the at least one heat pipe runs through the connecting body of the plurality of heat conducting separators, and fixes the plurality of heat conducting separators on On the at least one heat pipe; and a plurality of battery cells, there is a battery accommodation space between two adjacent separator main bodies in the stacking direction of the plurality of heat conduction separators, and each of the battery accommodation spaces is set One of the battery cells.

Description

technical field [0001] The invention relates to the technical field of large-capacity lithium-ion batteries, in particular to a battery pack and a battery module in which a plurality of soft-packaged lithium-ion battery cells are stacked and integrated. Background technique [0002] With the advancement of science and technology and the enhancement of human environmental protection awareness, the green energy industry at home and abroad has entered a stage of rapid development. The electric vehicle industry, communication industry and some special industries have begun to widely use high-energy and high-power lithium ions. The battery is used as the power source, and puts forward high requirements on the volume ratio and safety of the power module. [0003] The lithium-ion battery pack power supply is composed of multiple lithium-ion battery cells combined and packaged. In the production of large-capacity and high-power lithium-ion power supplies, battery cells are usually ...

AI Technical Summary

Problems solved by technology

However, because the outer packaging of flexible lithium-ion battery cells is a layer of aluminum-plastic film, the entire cell is relatively soft, and the cell packaging film is easily punctured. How to effectively protect the integrity of the cell packaging film becomes the first priority in the design of the battery pack packaging structure. problem to be solved

[0004] On the other hand, in the process of high-current charging and discharging, due to the heat generation of the battery core, the heat accumulation of the battery pack will lead to a decrease in the consistency of the battery, and the expansion of the battery core will affect the consistency and balance of each battery after the battery is grouped. An important indicator of resistance, thereby reducing the cycle life of the battery

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