Heat radiation structure of cylindrical lithium battery pack

Abstract

The invention discloses a heat radiation structure of a cylindrical lithium battery pack. The structure includes a cylindrical battery, a flat heat pipe, a curved heat transfer aluminum piece and a heat radiation piece, wherein the curved heat transfer aluminum piece includes a curved portion and a flat portion, the curved portion has the same curvature as an outer surface of a cylindrical batteryside surface, the cylindrical battery is placed in the curved portion of the curved heat transfer aluminum piece, one end of the flat heat pipe is in contact with the flat portion of the curved heattransfer aluminum piece, and the other end of the flat heat pipe is in contact with the heat radiation piece. The structure is advantaged in that the curved heat transfer aluminum piece is utilized totightly attach to an outer surface of the cylindrical battery, the contact area of the cylindrical battery and the curved heat transfer aluminum piece is enhanced, the heat is transferred by the curved heat transfer aluminum piece through the flat heat pipe to the heat radiation piece, heat transfer efficiency is improved, high heat transfer property of the heat pipe is utilized to transfer the heat to the heat radiation piece at the other end of the heat pipe, and timely heat radiation is performed.

Description

technical field [0001] The invention relates to the technical field of heat dissipation structures, in particular to a heat dissipation structure for a cylindrical lithium battery pack. Background technique [0002] For cylindrical lithium battery packs, because there are multiple lithium batteries gathered, a large amount of heat is likely to accumulate inside the battery pack, resulting in a rapid rise in the temperature of the cylindrical lithium battery pack, and exacerbating the uneven temperature distribution of the lithium battery pack. In the prior art, there are several heat dissipation methods for lithium batteries, such as air cooling, liquid cooling, and phase change cooling. However, air cooling cannot meet the temperature control requirements during high-power discharge. Liquid cooling equipment is heavy, consumes a lot of energy and has a risk of leakage. Phase change cooling is limited by phase change materials. Moreover, cylindrical lithium batteries cannot...

AI Technical Summary

Problems solved by technology

However, air cooling cannot meet the temperature control requirements during high-power discharge. Liquid cooling equipment is heavy, consumes a lot of energy and has a risk of leakage. Phase change cooling is limited by phase change materials.

Moreover, cylindrical lithium batteries cannot be combined without gaps like square batteries, so existing solutions also have shortcomings in terms of battery pack space utilization.

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