Battery pack liquid cooling control method and device

• Main Authors: LIU FANGZHEN, SHAN FENGWU, LIU JIANMIN, JIANG XIAOHUA, SHEN ZUYING
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a battery pack liquid cooling control method and device. The method comprises the steps carrying out analysis and comparison on a plurality of collected battery pack working temperature values to obtain the highest temperature value of the battery pack, calculating the temperature rise rate of the battery pack, and carrying out analysis and comparison on the temperature riserate of the battery pack to obtain the maximum temperature rise rate of the battery pack; setting a battery pack inlet water temperature target value according to the difference between the battery pack maximum temperature value and a battery pack target temperature value; sending a battery pack cooling request, the battery pack inlet water temperature target value and a water pump rotating speedpreset value to an air conditioning system when the highest temperature value of the battery pack is greater than a cooling starting threshold value; and controlling the partial components of the airconditioning system and a