Battery thermal management system for enhancing heat dissipation of battery tabs and control method

The invention discloses a battery thermal management system for enhancing heat dissipation of battery tabs and a control method, and belongs to the technical field of battery heat dissipation, the system comprises a liquid cooling module and a tab cooling module; the tab cooling module comprises a flexible bag, a water supply branch pipe, a water return branch pipe and a temperature sensor; the flexible bag is arranged above battery pack tabs, a plurality of aluminum balls filled with phase-change materials are arranged in the flexible bag, a water inlet and a water outlet of the flexible bag are respectively communicated with a water supply branch pipe and a water return branch pipe, and the water supply branch pipe and the water return branch pipe are respectively communicated with a water supply main pipe and a water return main pipe; the temperature sensor is used for monitoring the temperature of the aluminum ball. The system comprehensively considers the heat dissipation problem of the battery tab and t