▎ 摘　　要

NOVELTY - The system has a temperature sensor (2) fixed on the inner side of a power battery box body. The bottom of power battery box body is provided with a water cooling plate (3). The water cooling plate is connected with a water pump (4) through a cooling water pipe. The water pump and the temperature sensor are electrically connected with a controller (1). USE - Power battery liquid cooling liquid heat system. ADVANTAGE - The system can achieve the power battery system in the low temperature environment or high power output input engineering, the water cooling plate with graphene layer quickly heating or cooling. The system has simple structure, clear method and high reliability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for controlling power battery liquid cooling liquid heat system. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the power battery liquid cooling liquid heat system (Drawing includes non-English language text). 1Controller 2Temperature sensor 3Water cooling plate 4Water pump