Liquid-cooling adjusting device and method of automobile power battery

The invention relates to the field of automobile cooling adjustment, in particular to a liquid-cooling adjusting device of an automobile power battery. The liquid-cooling adjusting device of the automobile power battery comprises a plurality of single batteries connected in parallel, a liquid-cooling water inlet pipe and a liquid-cooling water outlet pipe, wherein the liquid-cooling water inlet pipe is connected with one end of the single battery; the liquid-cooling water outlet pipe is connected with the other end of the single battery; the liquid-cooling water inlet pipe is connected with the single battery through a water inlet adjusting valve; the liquid-cooling water outlet pipe is connected with the single battery through a water outlet adjusting valve; the closer to a water inlet the water inlet adjusting valve is in a water inlet direction, the larger the inner diameter of the water inlet adjusting valve is; and the closer to a water outlet the water outlet adjusting valve is in a water outlet directi