The invention discloses a vehicle-mounted
lithium battery with built-in heat dissipation flow channels, and relates to the field of
lithium batteries, the vehicle-mounted
lithium battery comprises a
lithium battery outer box, a plurality of
lithium battery bodies are installed in the
lithium battery outer box, and heat dissipation assemblies are arranged on the two sides of each lithium battery body; the heat dissipation
assembly comprises a heat conduction plate, a middle flow channel is vertically formed in the middle of the interior of the heat conduction plate, a heat dissipation flow channel is vertically formed in the side portion of the interior of the heat conduction plate, a plurality of
temperature sensing pieces are arranged on the side, close to the lithium battery body, in the heat dissipation flow channel, the
temperature sensing pieces are attached to the inner side of the heat conduction plate, and a plurality of flow speed regulation and control channels are formed between the heat dissipation flow channel and the middle flow channel; according to the invention, a plurality of
temperature sensing sheets are arranged in the
heat conducting plate, so that the temperatures of different parts of the lithium battery are sensed in real time, and the flow velocity of a heat dissipation medium is accurately adjusted by using the flow velocity control assemblies, so that multi-region separated accurate
temperature control is realized, the heat dissipation efficiency is improved, and local overheating is avoided; the battery performance and the service life can be effectively improved.