Vehicle-mounted power supply and three-dimensional water channel structure and power module thereof

The utility model relates to the field of new energy power supplies, in particular to a vehicle-mounted power supply and a three-dimensional water channel structure and a power module thereof. The vehicle-mounted power supply, the three-dimensional water channel structure thereof and the power module comprise a main body, a counter bore is arranged on the main body, a water channel is arranged in the main body, and a plurality of bosses can be arranged at the bottom of the counter bore. According to the three-dimensional water channel of the vehicle-mounted power supply and the vehicle-mounted power supply, through the counter bore, the water channel, the water outlet and the water inlet which are arranged diagonally, after the water channel is filled with a cooling medium, all-directional heat dissipation is achieved, and heat dissipation is more sufficient; meanwhile, the boss is arranged to make full contact with a cooling medium, the heat exchange contact area is increased, and the heat dissipation effici