Heat dissipation structure of flexible package lithium ion battery pack

Abstract

The invention discloses a heat dissipation structure of a flexible package lithium ion battery pack. The heat dissipation structure comprises a lithium ion battery positive tab and a lithium ion battery negative tab, wherein a U-shaped long hole is respectively formed in the flexible package lithium ion battery positive tab and the flexible package lithium ion battery negative tab; a PCB fixed plate is arranged above the U-shaped long holes; a fixed supporting plate is provided with a fixed claw which is firmly combined with the PCB fixed plate to form a rigid flat supporting surface; a circular hole for assembling a heat conduction silicone strip is formed in the flat supporting surface of the PCB fixed plate; a cooling fin is arranged on the heat conduction silicone strip; and assembling holes formed in the fixed supporting plate, the heat conduction silicone plate and the cooling fin are concentric, and the fixed supporting plate, the heat conduction silicone plate and the cooling fin are compressed by utilizing screws by virtue of an insulation sleeve and a spring gasket installed on the insulation sleeve so as to be fixed to the positive and negative tabs of a battery cell. The heat dissipation structure of the flexible package lithium ion battery pack is small in size and light in weight; and the aluminum cooling fin can take away a given amount of heat produced by the battery, and thus a good effect of lowering the temperature of the battery pack is achieved.

Description

Technical field: [0001] The invention relates to the battery field, and is especially used for reducing heat and reducing the temperature rise of the battery pack when the lithium-ion battery pack is in use. Background technique: [0002] With the gradual maturity of lithium-ion battery technology and the country's advocacy of new energy, more and more automobile manufacturers and energy storage manufacturers have begun to develop electric vehicles and new energy storage systems. Some special electric vehicles and energy storage systems require high The charge and discharge rate of the lithium ion battery, because the heat generation of the battery will increase after the charge and discharge rate is increased. The materials with charge and discharge capacity also increase the charge and discharge capacity of the battery by reducing the compaction density of the pole piece in the process. As for how to reduce the calorific value of the lithium-ion battery in terms of the co...

AI Technical Summary

Problems solved by technology

Patent No. 2014200891317 authorized by the National Patent Office, titled "A high-efficiency heat dissipation device for lithium-ion power batteries". , its disadvantage is that this structure occupies the dimensional space between the thickness of the battery, and the volume is relatively large, and electric vehicles have higher and higher requirements for the volume-to-energy ratio of the battery pack, so the volume of the heat dissipation part should not be too large, otherwise it will cause The cruising range of electric vehicles is short, which cannot meet the actual people's requirements for the cruising range of electric vehicles

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