CN-116552332-B - Heat dissipation control method for battery of electric automobile, electronic equipment and storage medium

Abstract

The invention discloses a battery heat dissipation control method for an electric automobile, electronic equipment and a storage medium. The method comprises the steps of obtaining vehicle navigation information, determining a battery cooling mode according to the vehicle navigation information, and cooling the battery by adopting a motor cooling loop when the battery cooling mode is a motor cooling mode or adopting a compressor to cool the battery when the battery cooling mode is a compressor cooling mode. According to the invention, the battery heat dissipation mode is dynamically determined according to the navigation information, and the battery is prevented from being refrigerated by the compressor, so that the starting frequency of the compressor is reduced when the battery is refrigerated, the energy consumption is reduced, and the noise is improved.

Inventors

• WU ZHIYONG
• ZHOU WANYANG
• ZHANG TAI
• XU ZHENPENG
• LI YONGGANG
• LIU BING
• RAN CHUNYAN
• DONG YONGQI

Assignees

• 东风汽车有限公司东风日产乘用车公司

Dates

Publication Date

20260508

Application Date

20230619

Claims (9)

1. 1. The heat dissipation control method for the battery of the electric automobile is characterized by comprising the following steps of: acquiring vehicle navigation information; Determining a battery heat dissipation mode according to the vehicle navigation information; when the battery cooling mode is a motor cooling mode, a motor cooling loop is adopted to cool the battery, or when the battery cooling mode is a compressor cooling mode, a compressor is adopted to cool the battery; the method for determining the battery heat dissipation mode according to the vehicle navigation information specifically comprises the following steps: determining estimated driving time for reaching a destination according to the vehicle navigation information; Acquiring a battery temperature rising rate of heat dissipation of a battery by adopting a motor cooling loop; calculating the estimated heating time when the battery temperature reaches the battery temperature threshold according to the battery heating rate; and if the estimated driving time is less than or equal to the estimated heating time, determining that the battery cooling mode is a motor cooling mode, otherwise, determining that the battery cooling mode is a compressor cooling mode.
2. 2. The method for controlling heat dissipation of a battery of an electric vehicle according to claim 1, wherein the obtaining a battery temperature rising rate of heat dissipation of the battery by using a motor cooling circuit specifically comprises: obtaining an estimated average vehicle speed reaching a destination and obtaining a current environment temperature; And when the current environment temperature is obtained and the vehicle runs at the estimated average speed, the temperature rising rate of the battery radiating the battery by adopting the motor cooling loop is adopted.
3. 3. The method for controlling heat dissipation of an electric vehicle battery according to claim 1, wherein calculating, according to the battery temperature increasing rate, an estimated temperature increase time when the battery temperature reaches a battery temperature threshold value specifically comprises: Obtaining the highest temperature of the current battery; And calculating the estimated heating time to be (T1-T2)/X, wherein T1 is a battery temperature threshold, T2 is the current battery highest temperature, and X is the battery heating rate.
4. 4. The method for controlling heat dissipation of a battery of an electric vehicle according to claim 1, wherein the heat dissipation of the battery by using the motor cooling circuit specifically comprises: Communicating the motor cooling circuit with the battery cooling circuit; And controlling the heat radiator of the motor cooling loop to operate.
5. 5. The method according to claim 4, wherein the heat dissipation device is a heat dissipation fan, and the heat dissipation device for controlling the motor cooling circuit is operated, and specifically comprises: Controlling the cooling fan to run for a preset time at an initial rotating speed; And monitoring the real-time battery temperature of the battery, and controlling the cooling fan to perform PID regulation when the absolute value of the difference value between the real-time battery temperature and the target temperature is smaller than or equal to a preset difference value threshold value.
6. 6. The method for controlling heat dissipation of a battery of an electric vehicle according to claim 5, wherein the monitoring the real-time battery temperature of the battery, when the absolute value of the difference between the real-time battery temperature and the target temperature is less than or equal to a preset difference threshold, controls the heat dissipation fan to perform PID adjustment, specifically comprises: and increasing the rotating speed of the cooling fan at a preset rotating speed rate, monitoring the real-time battery temperature of the battery, and controlling the cooling fan to perform PID regulation when the absolute value of the difference between the real-time battery temperature and the target temperature is smaller than or equal to a preset difference threshold value.
7. 7. The method for controlling heat dissipation of an electric vehicle battery according to claim 1, wherein the acquiring vehicle navigation information specifically comprises: and acquiring the current battery maximum temperature, acquiring vehicle navigation information if the current battery maximum temperature is smaller than a battery temperature threshold value, and refrigerating the battery by adopting a compressor otherwise.
8. 8. An electronic device, comprising: At least one processor, and A memory communicatively coupled to at least one of the processors, wherein, The memory stores instructions executable by at least one of the processors to enable the at least one of the processors to perform the electric vehicle battery heat dissipation control method according to any one of claims 1 to 7.
9. 9. A storage medium storing computer instructions which, when executed by a computer, are adapted to carry out all the steps of the electric vehicle battery heat dissipation control method of any one of claims 1 to 7.

Description

Heat dissipation control method for battery of electric automobile, electronic equipment and storage medium Technical Field The invention relates to the technical field of electric automobiles, in particular to a battery heat dissipation control method for an electric automobile, electronic equipment and a storage medium. Background The battery is used as an important part of the electric vehicle, and generates larger heat when the battery is charged and discharged, so that the heat management system is required to timely dissipate heat, and the temperature of the battery is ensured not to exceed a certain threshold value. The prior art mainly carries out the temperature regulation of the battery through compressor refrigeration. However, the use of compressor refrigeration causes increased energy consumption and noise degradation, which can cause significant problems for normal use by customers. Disclosure of Invention Accordingly, it is necessary to provide a battery heat dissipation control method for an electric vehicle, an electronic device, and a storage medium, which solve the problems of increased energy consumption and noise degradation caused by the conventional battery temperature adjustment by using compressor cooling. The invention provides a heat dissipation control method for an electric automobile battery, which comprises the following steps: acquiring vehicle navigation information; Determining a battery heat dissipation mode according to the vehicle navigation information; and when the battery cooling mode is a motor cooling mode, cooling the battery by adopting a motor cooling loop, or when the battery cooling mode is a compressor cooling mode, cooling the battery by adopting a compressor. Further, the determining the battery cooling mode according to the vehicle navigation information specifically includes: determining estimated driving time for reaching a destination according to the vehicle navigation information; Acquiring a battery temperature rising rate of heat dissipation of a battery by adopting a motor cooling loop; calculating the estimated heating time when the battery temperature reaches the battery temperature threshold according to the battery heating rate; and if the estimated driving time is less than or equal to the estimated heating time, determining that the battery cooling mode is a motor cooling mode, otherwise, determining that the battery cooling mode is a compressor cooling mode. Further, the obtaining the battery temperature rising rate of heat dissipation of the battery by adopting the motor cooling loop specifically includes: obtaining an estimated average vehicle speed reaching a destination and obtaining a current environment temperature; And when the current environment temperature is obtained and the vehicle runs at the estimated average speed, the temperature rising rate of the battery radiating the battery by adopting the motor cooling loop is adopted. Further, the calculating, according to the battery temperature rising rate, when the battery temperature reaches the estimated temperature rising threshold value of the battery temperature, specifically includes: Obtaining the highest temperature of the current battery; And calculating the estimated heating time to be (T1-T2)/X, wherein T1 is a battery temperature threshold, T2 is the current battery highest temperature, and X is the battery heating rate. Further, the heat dissipation of the battery by the motor cooling circuit specifically includes: Communicating the motor cooling circuit with the battery cooling circuit; And controlling the heat radiator of the motor cooling loop to operate. Further, the heat dissipating device is a heat dissipating fan, and the heat dissipating device for controlling the motor cooling circuit to operate specifically includes: Controlling the cooling fan to run for a preset time at an initial rotating speed; And monitoring the real-time battery temperature of the battery, and controlling the cooling fan to perform PID regulation when the absolute value of the difference value between the real-time battery temperature and the target temperature is smaller than or equal to a preset difference value threshold value. Still further, the monitoring the battery real-time temperature of the battery, when the absolute value of the difference between the battery real-time temperature and the target temperature is less than or equal to a preset difference threshold, controlling the cooling fan to perform PID adjustment, specifically includes: and increasing the rotating speed of the cooling fan at a preset rotating speed rate, monitoring the real-time battery temperature of the battery, and controlling the cooling fan to perform PID regulation when the absolute value of the difference between the real-time battery temperature and the target temperature is smaller than or equal to a preset difference threshold value. Further, the acquiring the vehicle navigation information specifica