A battery thermal management system based on pulsating heat pipes

Abstract

The invention discloses a battery heat management system based on pulsating heat pipes. The battery heat management system comprises a battery module box with through holes in walls and a module box top cover, wherein a plurality of battery monomers and a plurality of pulsating heat pipes are placed in the battery module box; the pulsating heat pipes comprise evaporation ends and condensation ends; the evaporation ends comprise square metal outer walls, circular metal inner walls and metal phase-change material interlayers, wherein the circular metal inner walls are wrapped in the square outer walls; the metal phase-change material interlayers are filled between the square metal outer walls and the circular metal inner walls; the condensation ends extend out of the battery module box via the through holes; the battery monomers are mainly formed by batteries wrapped by shells; the battery monomers and the evaporation ends of the pulsating heat pipes are arranged at intervals; the evaporation ends are fit on the shells of the battery monomers. The novel battery heat management system is achieved through advantage complementation of the metal phase-change materials and the traditional pulsating heat pipes.

Description

technical field [0001] The invention relates to a power battery thermal management system, in particular to a battery thermal management system based on a pulsating heat pipe. Background technique [0002] In the face of the global greenhouse effect and the shortage of fossil energy, reducing carbon emissions and seeking new energy have been raised to an unprecedented strategic height by various countries. Due to the advantages of clean energy and no pollution emissions, new energy vehicles have developed vigorously from concept to industry under the background of global resource shortage and environmental degradation, and the power battery, which is the core link of new energy vehicles, has also ushered in better development. opportunity. However, the performance of power batteries is sensitive to temperature changes, especially for large-capacity, high-power power batteries used in vehicles due to limited loading space and a large number, so they are arranged closely, and...

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Problems solved by technology

[0003] In order to solve the above problems, simple air cooling technology and liquid cooling technology are most commonly used at present, but because air cooling technology faces problems such as low heat transfer coefficient with the battery wall, slow cooling speed, and low efficiency, liquid cooling technology also faces problems. High sealing requirements, relatively large quality, complex maintenance, relatively complex structure and other disadvantages, so these two technologies cannot solve the thermal management problem of power batteries well

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