A battery pack and thermal management system thereof

Abstract

The present invention discloses a battery pack and a thermal management system thereof, which relate to the technical field of power batteries. The battery pack includes a shell, in which a liquid cooling plate, a metal support plate, a battery cell group and a direct cooling unit are arranged. The metal support plate is fixedly connected to the shell, and one side of the liquid cooling plate is tightly fitted with one side of the metal support plate, and the other side is tightly fitted with the inner wall of the shell; the battery cell group includes a plurality of battery cell heat pipe heat transfer units, and the battery cell heat pipe heat transfer unit includes a battery cell and a U-shaped micro heat pipe, and the inner wall of the U-shaped micro heat pipe is fitted with the outer wall of the battery cell; the direct cooling unit includes a manifold, a busbar and a plurality of direct cooling plates. The thermal management system includes a refrigerant cooling circuit unit and a motor cooling and waste heat recovery unit. The heating and heat dissipation performance of the battery pack is improved, thereby increasing the service life of the battery pack.

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