Battery pack and battery module provided with battery pack

Abstract

The invention provides a battery pack which comprises a plurality of heat-conducting partition plates, at least one heat-conducting pipe and a plurality of single batteries, wherein the heat-conducting partition plates are arranged in a laminating manner; each heat-conducting partition plate comprises two partition plate main bodies and a connector; every two partition plate main bodies are paved horizontally and arranged at an interval; each connector is connected with every two partition plate main bodies; the heat-conducting pipes penetrate through the connectors of the heat-conducting partition plates; the heat-conducting partition plates are fixed on the heat-conducting pipes; a battery containing space is arranged between every two adjacent partition plate main bodies in a laminating direction of the heat-conducting partition plates; and one single battery is arranged in each battery containing space.

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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