Charging pile and charging pile control method

1. A charging pile control method comprising:

obtaining a first temperature of a first charging apparatus that is in a first state and that is in a charging pile, wherein the first state is an operating state, the first temperature is an ambient temperature at an air inlet of the first charging apparatus that is in the first state, wherein the charging pile comprises a monitor and a charging assembly comprising a plurality of charging apparatuses including the first charging apparatus and a second charging apparatus, and each charging apparatus is provided with a heat dissipation fan and an ambient temperature sensor;

obtaining a second temperature of the second charging apparatus that is in a second state and that is in the charging pile, wherein the second state is a sleep state, and the second temperature is an ambient temperature at an air inlet of the second charging apparatus that is in the second state;

calculating a temperature difference between the second temperature and the first temperature, wherein the monitor is configured to receive and analyze the first temperature and the second temperature;

determining whether the temperature difference is greater than a first threshold, wherein the first threshold is an upper-limit temperature of the temperature difference; and

when the temperature difference is greater than the first threshold, starting a heat dissipation fan of the second charging apparatus that is in the second state.

2. The charging pile control method according to claim 1 , wherein the method further comprises:

when the temperature difference is less than or equal to a second threshold, turning off the heat dissipation fan of the second charging apparatus that is in the second state, wherein the second threshold is a lower-limit temperature of the temperature difference, and the second threshold is less than or equal to the first threshold.

3. The charging pile control method according to claim 1 , wherein, after the determining whether the temperature difference is greater than the first threshold, the method further comprises:

when the temperature difference is less than or equal to the first threshold, skipping starting the heat dissipation fan of the second charging apparatus that is in the second state.

4. The charging pile control method according to claim 1 wherein, after the determining whether the temperature difference is greater than the first threshold, the method further comprises:

when the temperature difference is equal to the first threshold, starting the heat dissipation fan of the second charging apparatus that is in the second state.

5. The charging pile control method according to claim 1 , wherein the obtaining the first temperature of the first charging apparatus that is in the first state and that is in the charging pile comprises: obtaining a plurality of first temperatures from a plurality of charging apparatuses that are in the first state, wherein a quantity of the plurality of first temperatures corresponds to a quantity of the charging apparatuses that are in the first state.

6. The charging pile control method according to claim 5 , wherein the calculating the temperature difference between the second temperature and the first temperature comprises:

obtaining, based on the plurality of first temperatures, a lowest temperature or an average temperature of the plurality of first temperatures; and

comparing the second temperature with the lowest temperature of the plurality of first temperatures, to obtain the temperature difference; or

comparing the second temperature with the average temperature of the plurality of first temperatures, to obtain the temperature difference.

7. The charging pile control method according to claim 6 , wherein, when there are a plurality of second temperatures,

comparing a highest temperature of the plurality of second temperatures with the lowest temperature of the plurality of first temperatures, to obtain the temperature difference;

comparing a highest temperature of the plurality of second temperatures with the average temperature of the plurality of first temperatures, to obtain the temperature difference;

comparing a lowest temperature of the plurality of second temperatures with the lowest temperature of the plurality of first temperatures, to obtain the temperature difference;

comparing a lowest temperature of the plurality of second temperatures with the comparing a lowest temperature of the plurality of second temperatures with the average temperature of the plurality of first temperatures, to obtain the temperature difference;

comparing an average temperature of the plurality of second temperatures with the lowest temperature of the plurality of first temperatures, to obtain the temperature difference; or

comparing an average temperature of the plurality of second temperatures with the comparing an average temperature of the plurality of second temperatures with the average temperature of the plurality of first temperatures, to obtain the temperature difference.

8. The charging pile control method according to claim 1 , wherein, before the calculating the temperature difference between the second temperature and the first temperature, the method further comprises:

determining whether the second temperature exceeds a third threshold, wherein the third threshold is an upper-limit temperature of the second temperature; and

when the second temperature is greater than the third threshold, directly starting the heat dissipation fan of the charging apparatus that is in the second state; or

when the second temperature is less than or equal to the third threshold, calculating the temperature difference between the second temperature and the first temperature.

9. A charging pile configured to charge an electric vehicle, wherein the charging pile comprises:

a monitor; and

a charging assembly, wherein the charging assembly comprises: two or more charging apparatuses including a first charging apparatus and a second charging apparatus, and each of the charging apparatuses is provided with a heat dissipation fan and an ambient temperature sensor;

wherein, the charging apparatuses are configured to obtain a corresponding first temperature or second temperature by using the ambient temperature sensors, wherein the first temperature is an ambient temperature at an air inlet of the first charging apparatus that is in a first state, the second temperature is an ambient temperature at an air inlet of the second charging apparatus that is in a second state, the first state is an operating state, and the second state is a sleep state; and

the monitor is configured to: receive and analyze the first temperature and the second temperature, and when a temperature difference between the second temperature and the first temperature is greater than a first threshold, start a heat dissipation fan of the second charging apparatus that is in the second state, wherein the first threshold is an upper-limit temperature of the temperature difference.

10. The charging pile according to claim 9 , wherein the monitor is further configured to: when the temperature difference is less than or equal to a second threshold, turn off the heat dissipation fan of the second charging apparatus that is in the second state, wherein the second threshold is a lower-limit temperature of the temperature difference, and the second threshold is less than or equal to the first threshold.

11. The charging pile according to claim 9 , wherein the monitor is further configured to: when the temperature difference is less than or equal to the first threshold, skip starting the heat dissipation fan of the second charging apparatus that is in the second state.

12. The charging pile according to claim 9 , wherein the monitor is further configured to: when the temperature difference is equal to the first threshold, start the heat dissipation fan of the second charging apparatus that is in the second state.

13. The charging pile according to claim 9 , wherein the monitor is configured to: receive a plurality of first temperatures from a plurality of charging apparatuses that are in the first state, and obtain a lowest temperature or an average temperature of the plurality of first temperatures, wherein a quantity of the plurality of first temperatures corresponds to a quantity of the charging apparatuses that are in the first state; and

the monitor is further configured to: based on the lowest temperature or the average temperature of the plurality of first temperatures, compare the second temperature with the lowest temperature of the plurality of first temperatures, to obtain the temperature difference; or

compare the second temperature with the average temperature of the plurality of first temperatures, to obtain the temperature difference.

14. The charging pile according to claim 13 , wherein, when there are a plurality of second temperatures, the monitor is further configured to obtain a highest temperature, a lowest temperature, or an average temperature of the plurality of second temperatures; and

the monitor is configured to:

compare the highest temperature of the plurality of second temperatures with the lowest temperature of the plurality of first temperatures, to obtain the temperature difference;

compare the highest temperature of the plurality of second temperatures with the compare the highest temperature of the plurality of second temperatures with the average temperature of the plurality of first temperatures, to obtain the temperature difference;

compare the lowest temperature of the plurality of second temperatures with the lowest temperature of the plurality of first temperatures, to obtain the temperature difference;

compare the lowest temperature of the plurality of second temperatures with the compare the lowest temperature of the plurality of second temperatures with the average temperature of the plurality of first temperatures, to obtain the temperature difference;

compare the average temperature of the plurality of second temperatures with the lowest temperature of the plurality of first temperatures, to obtain the temperature difference; or

compare the average temperature of the plurality of second temperatures with the average temperature of the plurality of first temperatures, to obtain the temperature difference.

15. The charging pile according to claim 9 , wherein the monitor is a component disposed in the charging assembly, and the charging apparatuses of the charging assembly communicate with each other by using the monitor; or

the monitor and the charging assembly are independent of each other.

16. The charging pile according to claim 9 , wherein the monitor is further configured to:

determine whether the second temperature is greater than a third threshold; and

when the second temperature is greater than the third threshold, directly start the heat dissipation fan of the second charging apparatus that is in the second state, wherein the third threshold is an upper-limit temperature of the second temperature.