| abstract |
The present application provides an active reinforced heat dissipation structure for a small power battery pack and an electric vehicle, comprising a double-shell cavity, the double-shell cavity including a accommodating cavity and an inner shell forming the accommodating cavity, and a surrounding A shell outside the shell; wherein, a heat dissipation cavity is formed between the shell and the inner shell, and the accommodation cavity is used for accommodating the power battery pack; the inner shell is provided with at least one metal surface on one side of the heat dissipation cavity, and there is also a metal surface on the inner shell. There are a plurality of ventilation holes connecting the heat dissipation cavity and the accommodating cavity, and some ventilation holes are correspondingly opened at the metal surface; a steam cavity is also set between the metal surface and the outer shell, and the steam cavity is filled with a cooling medium; Part of the ventilation holes on the shell are also provided with active flow guide components, which are used to guide the gas in the heat dissipation cavity to the accommodating cavity. The heat dissipation structure provided by the present application has the advantages of simple heat exchange structure, It has many effects such as strong heat exchange capacity, high reliability and improved temperature uniformity inside the battery pack. |