Methods and systems for charging rate management based on usage rate of charging stations

1. A method for charging rate management based on usage rate of charging stations for use in a server, comprising:

connecting to a plurality of electric vehicle charging stations of a charging field via a network by the server, wherein the electric vehicle charging stations is used for charging at least one electric vehicle;

obtaining a usage status of the respective electric vehicle charging station via the network by the server;

calculating a usage rate of the charging field according to the usage status of the respective electric vehicle charging station; and

determining a charging rate for the charging field according to the usage rate,

wherein the determination step further comprises:

determining whether the usage rate is greater than a first threshold value;

setting the charging rate to a first rate when the usage rate is not greater than the first threshold value;

determining whether the usage rate is greater than a second threshold value, wherein the second threshold value is greater than the first threshold value; and

setting the charging rate to a differential rate when the usage rate is greater than the second threshold value, wherein the differential rate starts from a specific rate and increases as the charging time continues.

2. The method of claim 1 , further comprising:

receiving a charging request from a mobile device or from a specific electric vehicle charging station of the electric vehicle charging stations by the server; and

in response to the charging request, instructing the specific electric vehicle charging station to perform a charging operation, and billing for the charging operation based on the charging rate by the server.

3. The method of claim 1 , wherein the charging rate is based on a charging time or a charging power as a unit.

4. The method of claim 1 , further comprising setting the charging rate to a second rate when the usage rate is greater than the first threshold value, wherein the second rate is greater than the first rate.

5. A system for charging rate management based on usage rate of charging stations, comprising:

a charging field comprising a plurality of electric vehicle charging stations for charging at least one electric vehicle; and

a server connecting to the respective electric vehicle charging station of the charging field via a network, obtaining a usage status of the respective electric vehicle charging station via the network, calculating a usage rate of the charging field according to the usage status of the respective electric vehicle charging station, and determining a charging rate for the charging field according to the usage rate, wherein the server further determines whether the usage rate is greater than a first threshold value, and sets the charging rate to a first rate when the usage rate is not greater than the first threshold value, and the server further determines whether the usage rate is greater than a second threshold value, and sets the charging rate to a differential rate when the usage rate is greater than the second threshold value, wherein the second threshold value is greater than the first threshold value, and the differential rate starts from a specific rate and increases as the charging time continues.

6. The system of claim 5 , wherein the server further receives a charging request from a mobile device or from a specific electric vehicle charging station of the electric vehicle charging stations, and in response to the charging request, instructs the specific electric vehicle charging station to perform a charging operation, and bills for the charging operation based on the charging rate.

7. The system of claim 5 , wherein the charging rate is based on a charging time or a charging power as a unit.

8. The system of claim 5 , wherein the server sets the charging rate to a second rate when the usage rate is greater than the first threshold value, wherein the second rate is greater than the first rate.