High-strength heat transfer structure for cooling the power battery

Abstract

The invention discloses a high-strength heat transfer structure for cooling a power battery. The high-strength heat transfer structure is formed by laminating multiple groups of battery heat transferunits; each group of battery heat transfer unit comprises a single lithium ion battery (1), a graphene membrane (2), a plurality of heat transfer tubes (3) and a water cooling plate (4), wherein eachgraphene membrane (2) is arranged on the surface of the corresponding single lithium ion battery; the plurality of heat transfer tubes are respectively and alternately arranged on two surfaces of eachsingle lithium ion battery and are in contact with the corresponding graphene membrane; each water cooling plate is connected to the heat transfer tubes; a phase change dielectric layer (34) is arranged on the inner wall of each heart transfer tube; heat of the single lithium ion batteries is transferred to the heat transfer tubes through the corresponding graphene membranes and is transferred tothe water cooling plates through the corresponding phase change dielectric layers. The high-strength heat transfer structure disclosed by the invention has the advantages that heat dissipation capability of a battery pack can be improved; meanwhile, the mass of the battery pack is reduced and the manufacturing cost of the battery pack is reduced.

Description

technical field [0001] The invention relates to the field of thermal management of power battery packs for new energy vehicles, in particular to a high-strength heat transfer structure for cooling power batteries. Background technique [0002] With the rapid development of the electric vehicle industry, battery thermal management technology has been paid more and more attention by vehicle manufacturers and battery manufacturers. In recent years, international battery thermal management research institutes have begun to propose the heat dissipation control concept of liquid circulation cooling and heating integration. The use of liquid circulation heat dissipation has the advantages of fast heat transfer and high strength, which is not only conducive to cooling in summer, but also can be preheated in winter. , which is convenient for vehicle thermal integration, thermal complementarity and synergistic energy saving and efficiency enhancement. At present, there have been some...

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Problems solved by technology

[0003] Although the above two full-plate and fully-immersed liquid heat transfer technologies have good heat dissipation capabilities, the large amount of liquid in the battery pack is prone to the risk of liquid leakage, and the mass of the heat transfer structure is large, which is not conducive to the lightweight and low energy consumption of electric vehicles. consumption

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