Liquid-cooling cooler for power module of electric vehicle

A liquid-cooling cooler for an electric vehicle power module, comprising:

• a liquid-cooling plate having a first heat dissipation surface and a second heat dissipation surface that are opposite to each other, wherein the first heat dissipation surface is configured to be in contact with a coolant, and the second heat dissipation surface is configured to be in contact with a plurality of heat sources of the electric vehicle power module;
• and
• a plurality of fin regions being located on the first heat dissipation surface;
• wherein a first rectangular region formed by outward extension of four sides of a projection of the heat source is defined as a heat source fin region among the plurality of fin regions;
• wherein a second rectangular region being of same size as the heat source fin region and extending outward from the heat source fin region in a counter flow direction of the coolant, is defined as an upstream fin region among the plurality of fin regions;
• wherein a third rectangular region being of same size as the heat source fin region and extending outward from the heat source fin region in a flow direction of the coolant, is defined as a downstream fin region among the plurality of fin regions;
• wherein a fin density of the heat source fin region is greater than a fin density of the downstream fin region, and the fin density of the downstream fin region is greater than or equal to a fin density of the upstream fin region.