Granted Patent B2

US 12,315,902 · App. 17/886,228 · Granted May 27, 2025

Inventors: Wei Chen (Ningde, CN); Xiaojian Huang (Ningde, CN); Yuanmiao Zhao (Ningde, CN); Zhimin Dan (Ningde, CN)

Assignee: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

H01M10/615H01M10/625H01M10/63H01M2220/20

Abstract

Claims (59)

1. A battery heating control method, comprising:

collecting a battery parameter of a battery module;

in response to the battery parameter of the battery module meeting a preset heating condition, controlling a traction battery and a feed battery of the battery module to charge and discharge each other so that the battery module is heated through mutual charge and discharge of the traction battery and the feed battery; and

controlling the traction battery of the battery module to power a motor of a vehicle,

wherein controlling the traction battery and the feed battery of the battery module to charge and discharge each other comprises:

obtaining a motor feed current and an initial discharge effective value of the feed battery;

calculating a discharge adjustment value for the feed battery based on the motor feed current and the initial discharge effective value of the feed battery; and

during discharging of the feed battery, adjusting a discharge current of the feed battery based on the discharge adjustment value.

2. The method according to claim 1 , wherein controlling the traction battery and the feed battery of the battery module to charge and discharge each other comprises:

obtaining a discharge effective value of the traction battery and a discharge effective value of the feed battery;

calculating a traction discharge duration corresponding to the traction battery and a feed discharge duration corresponding to the feed battery based on the discharge effective value of the traction battery and the discharge effective value of the feed battery;

during discharging of the traction battery, controlling the traction battery to release electric energy for the traction discharge duration; and

during discharging of the feed battery, controlling the feed battery to release electric energy for the feed discharge duration.

3. The method according to claim 1 , further comprising, after controlling the traction battery and the feed battery of the battery module to charge and discharge each other:

in response to a temperature of the battery module meeting a temperature requirement, controlling the traction battery and the feed battery of the battery module to stop charging and discharging.

4. The method according to claim 3 , further comprising, after controlling the traction battery and the feed battery of the battery module to stop charging and discharging:

in response to a voltage difference between the traction battery and the feed battery being not in a preset threshold range, controlling one of the traction battery and the feed battery with a higher voltage to discharge to another one of the traction battery and the feed battery with a lower voltage;

in response to a determination in real time in the discharge process that the voltage difference between the traction battery and the feed battery is not in the preset threshold range, continuing the discharge process; and

in response to a determination in real time in the discharge process that the voltage difference between the traction battery and the feed battery is in the preset threshold range, stopping the discharge process.

5. The method according to claim 4 , further comprising, after stopping the discharge process:

in response to the motor of the vehicle requesting to start, controlling the traction battery and the feed battery to be connected in parallel to power the motor of the vehicle.

6. The method according to claim 1 , wherein the battery parameter comprises a battery temperature, and the preset heating condition comprises that the battery temperature of the battery module is lower than a preset temperature.

7. The method according to claim 1 , wherein the battery parameter comprises a battery temperature and a battery level, and the preset heating condition comprises that the battery temperature of the battery module is lower than a preset temperature and the battery level is higher than a preset battery level.

8. The method according to claim 1 , further comprising, before controlling the traction battery and the feed battery of the battery module to charge and discharge each other:

controlling the traction battery and the feed battery of the battery module to be connected in series reversely;

wherein the traction battery and the feed battery of the battery module are connected in parallel under a non-heating condition to power the motor.

9. A battery heating control method, comprising:

collecting a battery parameter of a battery module;

in response to the battery parameter of the battery module meeting a preset heating condition, controlling a traction battery and a feed battery of the battery module to charge and discharge each other so that the battery module is heated through mutual charge and discharge of the traction battery and the feed battery; and

controlling the traction battery of the battery module to power a motor of a vehicle,

wherein:

controlling the traction battery and the feed battery of the battery module to charge and discharge each other comprises:

controlling one of the traction battery and the feed battery of the battery module to discharge to an energy storage element so as to charge the energy storage element; and

controlling the energy storage element to charge another one of the traction battery and the feed battery; and

the motor of the vehicle comprises a first motor and a second motor, wherein the traction battery powers the second motor so that the vehicle drives, and a stator inductor of the first motor is the energy storage element.

10. The method according to claim 9 , wherein controlling the energy storage element to charge the other one of the traction battery and the feed battery comprises:

after charging of the energy storage element has been completed, controlling the energy storage element to charge the other one of the traction battery and the feed battery.

11. The method according to claim 9 , wherein controlling the traction battery and the feed battery of the battery module to charge and discharge each other comprises:

obtaining a discharge effective value of the traction battery and a discharge effective value of the feed battery;

calculating a traction discharge duration corresponding to the traction battery and a feed discharge duration corresponding to the feed battery based on the discharge effective value of the traction battery and the discharge effective value of the feed battery;

during discharging of the traction battery, controlling the traction battery to release electric energy for the traction discharge duration; and

during discharging of the feed battery, controlling the feed battery to release electric energy for the feed discharge duration.

12. The method according to claim 9 , further comprising, after controlling the traction battery and the feed battery of the battery module to charge and discharge each other:

in response to a temperature of the battery module meeting a temperature requirement, controlling the traction battery and the feed battery of the battery module to stop charging and discharging.

13. The method according to claim 9 , wherein the battery parameter comprises a battery temperature, and the preset heating condition comprises that the battery temperature of the battery module is lower than a preset temperature.

14. The method according to claim 9 , wherein the battery parameter comprises a battery temperature and a battery level, and the preset heating condition comprises that the battery temperature of the battery module is lower than a preset temperature and the battery level is higher than a preset battery level.

15. The method according to claim 9 , further comprising, before controlling the traction battery and the feed battery of the battery module to charge and discharge each other:

controlling the traction battery and the feed battery of the battery module to be connected in series reversely;

wherein the traction battery and the feed battery of the battery module are connected in parallel under a non-heating condition to power the motor.

16. An electronic device, comprising:

a memory storing a computer program; and

a processor configured to execute the computer program to:

collect a battery parameter of a battery module;

in response to the battery parameter of the battery module meeting a preset heating condition, control a traction battery and a feed battery of the battery module to charge and discharge each other so that the battery module is heated through mutual charge and discharge of the traction battery and the feed battery; and

control the traction battery of the battery module to power a motor of a vehicle,

wherein controlling the traction battery and the feed battery of the battery module to charge and discharge each other comprises:

obtaining a motor feed current and an initial discharge effective value of the feed battery;

calculating a discharge adjustment value for the feed battery based on the motor feed current and the initial discharge effective value of the feed battery; and

during discharging of the feed battery, adjusting a discharge current of the feed battery based on the discharge adjustment value.

Assignments (2)

Priority Claims (1)

Continuity (2)

References Cited (38)