A power battery comprises a first battery cell group and a second battery cell group that are not equal in electromotive force and connected in series. The heating system comprises an inverter, an alternating-current motor, and a first controller. Midpoints of three bridge arms of the inverter are connected to head ends of three-phase coils of the motor in a one-to-one correspondence manner, and tail ends of the motor are connected together to form a neutral point. The neutral point is connected to a first connection point by means of a connection line, and the first connection point is a connection point between the first and second battery cell groups. The first controller is used for inputting a driving signal to the inverter. The first battery cell group, the second battery cell group, the inverter, the motor, and the connection line form an alternating-current self-heating loop.
HEATING SYSTEM FOR HEATING POWER BATTERY, AND ELECTRIC VEHICLE
2025-01-30
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / H05B ELECTRIC HEATING , Elektrische Heizung |
Heating method and heating system of electric vehicle power battery
European Patent Office | 2021
|Power battery heating method, power battery heating device and electric vehicle
European Patent Office | 2024
|European Patent Office | 2021
|Battery heating circuit, battery heating method and electric vehicle
European Patent Office | 2022
|