Device and method for adjusting temperature of power battery of hybrid electric vehicle

• Main Authors: CAI YUHENG, LI ZEZHI, FANG ZIHAO, ZHAO JIALE, ZHOU GUAN, ZHOU RUCHEN
• Format: Patent
• Language: Chinese; English
• Published: 08.11.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a temperature adjusting device and method for a power battery of a hybrid electric vehicle, belongs to the technical field of new energy vehicles, enables the power battery to be still maintained in a proper temperature range in a low-temperature environment, and is beneficial to widening the application range of the new energy vehicles, prolonging the service life of the power battery and reducing the heating cost of the power battery. The method mainly comprises a heating part and a control part of the power battery, when the power battery is located at a lower position, the opening degrees of a waste gas valve and an air valve are adjusted, the temperature of mixed gas is adjusted, and the heat of the mixed gas is used for heating the power battery; and when the temperature of the power battery is high and reaches a preset high temperature, low-temperature external air is selected to cool the power battery. 本发明公开了一种混合动力汽车的动力电池温度调节装置及方法，属于新能源汽车技术领域，使动力电池在低温环境下仍能维持在一个合适的温度区间内，有利于扩大新能源