Thermal management system, battery pack, and vehicle

A battery pack, comprising:

• a thermal management system, comprising:
• a main liquid inlet pipe, wherein a main liquid inlet and at least two liquid inlets are spaced apart and disposed on the main liquid inlet pipe in sequence;
• a main liquid outlet pipe, wherein a main liquid outlet and at least two liquid outlets are spaced apart and disposed on the main liquid outlet pipe in sequence;
• and
• at least two liquid cooling plates spaced apart along a preset direction, wherein each of the at least two liquid cooling plates communicates with one of the at least two liquid inlets and one of the at least two liquid outlets,
• wherein among the at least two liquid inlets, a cross-sectional area of a liquid inlet closer to the main liquid inlet is smaller than a cross-sectional area of a liquid inlet farther from the main liquid inlet;
• or among the at least two liquid cooling plates, a liquid flow space inside a liquid cooling plate closer to the main liquid inlet is smaller than a liquid flow space inside a liquid cooling plate farther from the main liquid inlet;
• and
• at least two stacked battery modules placed on upper surfaces of the at least two liquid cooling plates in a one-to-one manner, wherein each liquid cooling plate is configured to exchange heat with a corresponding battery module.

A vehicle, comprising:

• a vehicle body;
• and
• a battery pack disposed on the vehicle body, wherein the battery pack comprises:
• a thermal management system, comprising:
• a main liquid inlet pipe, wherein a main liquid inlet and at least two liquid inlets are spaced apart and disposed on the main liquid inlet pipe in sequence;
• a main liquid outlet pipe, wherein a main liquid outlet and at least two liquid outlets are spaced apart and disposed on the main liquid outlet pipe in sequence;
• and
• at least two liquid cooling plates spaced apart along a preset direction, wherein each of the at least two liquid cooling plates communicates with one of the at least two liquid inlets and one of the at least two liquid outlets,
• wherein among the at least two liquid inlets, a cross-sectional area of a liquid inlet closer to the main liquid inlet is smaller than a cross-sectional area of a liquid inlet farther from the main liquid inlet;
• or among the at least two liquid cooling plates, a liquid flow space inside a liquid cooling plate closer to the main liquid inlet is smaller than a liquid flow space inside a liquid cooling plate farther from the main liquid inlet;
• and
• at least two stacked battery modules placed on upper surfaces of the at least two liquid cooling plates in a one-to-one manner, wherein each liquid cooling plate is configured to exchange heat with a corresponding battery module.