Refrigerant direct-cooling device and battery power supply system

The utility model discloses a refrigerant direct cooling device and a battery power supply system. The refrigerant direct cooling device comprises a heat dissipation assembly, a refrigerant inlet pipeand a refrigerant outlet pipe, wherein the refrigerant inlet pipe and the refrigerant outlet pipe are arranged on the heat dissipation assembly. Wherein the heat dissipation assembly comprises a first flow collecting pipe and a second flow collecting pipe which are oppositely arranged in parallel, and a heat dissipation pipe arranged between the first flow collecting pipe and the second flow collecting pipe, and the refrigerant direct cooling device further comprises a uniform temperature plate arranged on the heat dissipation pipe. The battery power supply system comprises a power battery and a refrigerant direct cooling device, wherein the power battery is arranged on the uniform temperature plate. According to the refrigerant direct cooling device, heat of the power battery is uniformly transferred to each hea