TWI787825B - Time share control system and apparatus for electric vehicles to share charge - Google Patents

Abstract

The invention provides a time share control system and apparatus for electric vehicles to share charge, comprising: a power supply circuit; several ports, which all couple to the power supply circuit and are provided for electric vehicle to connect with to be charged; a control module, which couples to the power supply circuit and controls the ports to start or stop charging the electric vehicles connected; a load setting module, which couples to the control module, sets the maximum number of electric vehicles that being charged by the ports, and determines whether the number of the electric vehicles connected to the ports exceeds the maximum number; a detection module, which couples to the ports and detects whether the ports start or stop charging the electric vehicles connected with, whether the electric vehicles connected are fully charged, and the order in which the electric vehicles connect to the ports; a timer module, which couples to the control module, sets a basic charging period, and calculates the time the ports has charged the electric vehicles connected. By this system, more charging stations can be set to meet the charging need of electric vehicles without increasing the total power supply.

Description

Time-sharing charging control system and equipment for electric vehicles

The present invention relates to a time-sharing charging control system and equipment for electric vehicles, in particular to a system and equipment for controlling power supply ports to supply power to electric vehicles or to stop power supply.

With the rising awareness of environmental protection, the policies of many countries have announced the prohibition or restriction of fuel vehicles, making electric vehicles gradually move towards the mainstream. In the future, the market demand for electric vehicles will increase day by day. The Chinese government also encourages residential buildings and shopping malls to set up charging parking spaces with laws and regulations. , so the demand for power supply ports for electric vehicles will also increase accordingly.

For example, the existing parking lot must be equipped with a charging pile. After the user parks the electric vehicle in the parking space with the charging pile, he must connect the electric vehicle to the charging pile to charge the electric vehicle. However, when the parking space with the charging pile When it is occupied by fuel vehicles, the charging pile will be idle and cannot be used to charge electric vehicles, and if all parking spaces in the parking lot must be charged for electric vehicles, the parking lot must not only be installed in each parking space Charging piles, and it is necessary to apply to the power company to set up enough power loads to provide sufficient total power supply, otherwise it may cause a large number of electric vehicles to be charged at the same time, resulting in overload and power outages.

In addition, since electric vehicles and other electric vehicles have not yet been fully popularized, there are also situations where the utilization rate of charging piles is low. For example, in the parking lots of residential complexes, most of them are concentrated during off-duty hours, while commercial buildings are mostly concentrated during weekdays. Most of the charging piles are idle during popular business periods such as weekends and holidays, and the average power usage efficiency is low. Therefore, under the existing technology, if it is necessary to add charging piles, it is necessary to apply to the power company to increase the power load. However, if there is only a small amount of time for charging a large number of electric vehicles, the efficiency of power supply will not be high. , so that the benefits of increasing the power load or adding charging piles are still low.

The purpose of the present invention is to provide a time-sharing charging control system and equipment for electric vehicles, which can charge electric vehicles more efficiently by using existing household sockets when the power supply is limited , and meet the needs of widely setting up charging stations.

The present invention discloses a time-sharing charging control system for electric vehicles, which can charge electric vehicles, including: a power supply circuit; a plurality of power supply ports, which are all coupled to the power supply circuit, and can be used for electric vehicles connected to supply power to the electric vehicle; a control module, which is coupled with the power supply circuit to control the power supply ports to start or stop supplying power to the connected electric vehicle; a load setting module, which is connected to the control module group coupling, and can set the maximum number of electric vehicles charged by these power supply ports, and determine whether the number of electric vehicles connected to these power supply ports has reached the maximum number; a detection module, its Coupled with these power supply ports, it can detect that these power supply ports start or stop supplying power to the connected electric vehicles, that the electric vehicles connected to these power supply ports are not fully charged or have been fully charged, and that the electric The order in which vehicles are connected to these power supply ports; a timing module, which is coupled with the control module, can set a basic charging period and calculate the time for these power supply ports to supply power to the connected electric vehicles; Wherein, when the load setting module determines that the number of electric vehicles connected to these power supply ports does not reach the maximum number according to the number of connections between the power supply ports and electric vehicles transmitted by the detection module, and there is another electric vehicle When connected to the power supply ports, the control module controls the power supply ports to start supplying power to the electric vehicles; and when the detection module detects that the power supply ports have fully charged the connected electric vehicles, Or when the timing module calculates that the time for the power supply ports to supply power to the connected electric vehicle has reached the basic charging period, the control module controls the power supply ports to stop supplying power to the electric vehicle.

The present invention also discloses a time-sharing charging control device for an electric vehicle, which is connected to a plurality of power supply ports through a power supply circuit, and the power supply ports can be connected to the electric vehicle to supply power to the electric vehicle, including: a control module, It is coupled with the power supply circuit to control the power supply ports to start or stop power supply to the connected electric vehicles; a load setting module is coupled with the control module and can be set to use the power supply ports The maximum number of electric vehicles for charging, and determine whether the number of electric vehicles connected to the power supply ports has reached the maximum number; a detection module, which is coupled with the power supply ports, can detect the The power supply ports start or stop supplying power to the connected electric vehicles, the electric vehicles connected to the power supply ports are not fully charged or fully charged, and the order in which the electric vehicles are connected to the power supply ports; A module, which is coupled with the control module, can set a basic charging period and calculate the time for the power supply ports to supply power to the connected electric vehicle; wherein, when the load setting module is based on the detection module The number of electric vehicles connected to the power supply ports transmitted is determined to be less than the maximum number of electric vehicles connected to the power supply ports, and when electric vehicles are connected to the power supply ports again, the control module controls These power supply ports start to supply power to the electric vehicle; and when the detection module detects that the power supply ports are fully charged to the connected electric vehicle, or the timing module calculates that the power supply ports are connected to the When the power supply time of the electric vehicle reaches the basic charging period, the control module controls the power supply ports to stop supplying power to the electric vehicle.

The present invention has the following beneficial effects: 1. By setting the maximum number of electric vehicles charged at the same time and the basic charging period, time-sharing charging can be carried out under the existing power supply load, and the power supply can be effectively used to avoid single electric vehicles. Vehicles occupy charging for a long time, which is conducive to more electric vehicles using charging. 2. The power supply port can use existing household power sockets or special power sockets without installing charging piles, which is conducive to the comprehensive laying of charging stations and greatly reduces the construction cost of charging stations.

Please refer to Figure 1, which is an embodiment of the time-sharing charging control system and equipment for electric vehicles of the present invention, which shows a control device 1 for shared charging of electric vehicles, a power supply circuit 2, and a plurality of power supply ports 3. The control device 1 is coupled to the power supply circuit 2 and connected to the power supply ports 3 through the power supply circuit 2 . The power supply ports 3 are all coupled to the power supply circuit 2 and can be connected to the electric vehicle to supply power to the electric vehicle. Wherein, if the present invention is arranged in a parking lot, the power supply ports 3 can use existing household power sockets or special power sockets, and can be connected to travel chargers such as electric vehicles to supply power to electric vehicles.

The control device 1 also includes a control module 11, which is coupled with the power supply circuit 2 to control the power supply ports 3 to start or stop power supply to the connected electric vehicle; a load setting module 12, which is connected to the power supply circuit 2 The control module 11 is coupled and can be used to set the maximum number of electric vehicles charged by these power supply ports 3, and determine whether the number of electric vehicles connected to these power supply ports 3 has reached the maximum number; a detection Test module 13, which is coupled with these power supply ports 3, can detect that these power supply ports 3 start or stop supplying power to the connected electric vehicles, and the electric vehicles connected to these power supply ports 3 are not fully charged Electricity or fully charged, and the order in which electric vehicles are connected to these power supply ports 3; a timing module 14, which is coupled with the control module 11, can be used to set a basic charging period and an extended charging period, And calculate the power supply time of these power supply ports 3 to the connected electric vehicle, wherein the extended power supply period can be set to be shorter than the basic charging period, and can also be set to be longer or longer than the basic charging period according to the needs of time-sharing management. Both are equal.

In this embodiment, the maximum number set by the load setting module 12 is the maximum value of the electric vehicles connected and powered by the power supply ports 3 within the maximum power that the power supply circuit 2 can provide .

In this embodiment, the control device 1 further has an authorization module 15, the authorization module 15 is coupled to the control module 11 and can send an extended charging request to the control module 11 corresponding to one of the power supply ports 3, When the control module 11 receives the extended charging request, it controls one of the power supply ports 3 to supply power to the connected electric vehicle for an extended charging period. In this way, if the user's electric vehicle has a long-distance commuting demand and needs to charge the electric vehicle for a long time, he can apply for extending the charging time through the authorization module 15, that is, send an extended charging request to the user. With the control module 11 , the administrator can allow the extended charging request through the administrator control interface connected to the control device 1 , so that the control module 11 can control the power supply port 3 to extend the charging time of the electric vehicle.

In this embodiment, the control device 1 further has an information transmission module 16, the information transmission module 16 is coupled to the control module 11, and transmits the number of electric vehicles connected to the power supply ports 3 and the maximum The difference in the quantity for downloading by the user terminal device. Among them, user terminal devices may be electronic devices such as mobile phones, personal computers, and tablet computers, and may be transmitted through wired, wireless, optical, and electromagnetic transmission methods, including but not limited to Internet, radio waves, and optical fiber communications. The control device 1 receives data, or sends data to the control device 1, so that the user terminal device connected to the control device 1 through the above method can use the relevant application program or software to query the power supply status of these power supply ports 3 in real time, and understand The number of power supply ports 3 that can be charged at the current and each time period of the electric vehicle parking place, so as to facilitate them to choose a suitable time period to park and charge their electric vehicles.

In this embodiment, the detection module 13 further has a load sensing module 17, the load sensing module 17 can sense the current or voltage of the power supply circuit 2, and obtain such as voltage (V), current ( A), kW (kW), kWh (kWh) and other values, and determine whether the electric vehicle connected to the power supply port 3 is fully charged or not.

In this embodiment, the control device 1 further has a user authentication module 18, the user authentication module 18 is coupled to the control module 11 and has to send a power supply request corresponding to one of the power supply ports 3, the control module 11 According to the sequence of received power supply requests, as the sequence of the electric vehicles connecting to the power supply ports 3, the basic charging period for the power supply ports 3 to supply power to the connected electric vehicles may be controlled. The user authentication module 18 can be accessed by user account number or password, or for example a radio frequency identification module, the user can enter the account password or use the corresponding radio frequency identification tag card to access the user authentication module 18 to perform Identity identification is used to send power supply requests, so that the control module 11 schedules and charges the electric vehicles connected to the power supply ports 3 in sequence according to the sequence of power supply requests.

In this embodiment, the control device 1 further has a billing module 19, the billing module 19 is coupled to the timing module 14 and must correspond to one of the power supply ports 3 to calculate the power supply time of the connected electric communication tool , and converted to a chargeable fee.

In the above embodiment, when the load setting module 12 judges that the number of electric vehicles connected to the power supply ports 3 does not reach the maximum number according to the number of connections between the power supply ports 3 and the electric vehicles transmitted by the detection module 13 , and when an electric vehicle is connected to the power supply ports 3 again, the control module 11 controls the power supply ports 3 to start supplying power to the electric vehicle, and when the detection module 13 detects the power supply ports 3 When the connected electric vehicle has been fully charged, or the timing module 14 calculates that the time for the power supply port 3 to supply power to the connected electric vehicle has reached the basic charging period, the control module 11 controls the The power supply port 3 stops supplying power to the electric vehicle.

Further, when the timing module 14 calculates that the charging time of the electric vehicles connected to the power supply ports 3 has reached the basic charging period, and the detection module 13 detects that the electric vehicles are not fully charged, the control The module 11 controls the power supply ports 3 to supply power to the electric vehicle for the extended charging period. And when the timing module 14 calculates that the power supply port 3 has reached the basic charging period and the extended charging period, and the detection module 13 detects that the electric vehicle has not yet When fully charged, the control module 11 controls the power supply ports 3 to supply power to the electric vehicle for another extended charging period.

In addition, when the load setting module 12 judges that the number of electric vehicles connected to the power supply ports 3 has reached the maximum number according to the number of electric vehicles connected to the power supply ports 3 transmitted by the detection module 13 , and when the electric vehicles connected to the power supply ports 3 have been fully charged or the power supply time has reached the basic charging period, the control module 11 controls the power supply ports 3 to stop supplying power to the electric vehicles , and according to the order in which the electric vehicles are connected to the power supply ports 3, the basic charging period is controlled for the power supply ports 3 to supply power to other electric vehicles connected later. If the timing module 14 calculates that the charging time of the electric vehicles connected to the power supply ports 3 has reached the basic charging period, and the detection module 13 detects that the electric vehicles are not fully charged and are connected later The other electric vehicles in the power supply ports 3 have been fully charged or have been powered for the basic charging period, and the control module 11 controls the power supply ports 3 according to the order in which the electric vehicles are connected to the power supply ports 3 Powering the electric vehicle is the extended charging period. Or when the power supply ports 3 supply power to the connected electric vehicle has reached the basic charging period and the extended charging period, and the detection module 13 detects that the electric vehicle is not fully charged, then the control The module 11 controls the power supply ports 3 to stop supplying power to the electric vehicles, and controls the power supply ports 3 to supply power to the electric vehicles according to the order in which the electric vehicles are connected to the power supply ports 3, and another extended charging time period.

In a preferred embodiment, as shown in Figure 2, step S1 is for the user to connect his electric vehicle (such as an electric vehicle) to any power supply port 3, and step S11 is to determine whether there are other electric vehicles that are already charging. If there is no tool, then step S111 controls the power supply port 3 to start charging the electric vehicle; if there is, then step S112 further determines whether the total number of other charging vehicles is less than the maximum number, and if so, further controls the electric vehicle in step S1121 The power supply port 3 starts charging the electric vehicle; otherwise, step S1122 controls the power supply port 3 to stop charging the electric vehicle, and in step S11221, when the total number of other charging vehicles is less than the maximum number, the power supply port is controlled. 3 Start charging the electric vehicle.

In a preferred embodiment, as shown in FIG. 3 , step S2 is to start charging the electric vehicle for a basic charging period, and judge whether the electric vehicle has been fully charged, and if so, proceed to step S21 to control the electric vehicle. Power supply port 3 stops power supply to the electric vehicle; if not, proceed to step S22, determine whether there are other electric vehicles connected to other power supply port 3 later than the electric vehicle, if not, proceed to step S221, control the power supply Port 3 supplies power to the electric vehicle, if yes, proceed to step S222 to further determine whether the number of other electric vehicles connected to other power supply ports 3 is less than the maximum number, if so, proceed to step S2221 to control the power supply port 3 Power supply to the electric vehicle, if not, then step S2222, control the power supply port 3 to stop power supply to the electric vehicle, and in step S22221, wait until the number of other electric vehicles connected to other power supply ports 3 later is less than the When the maximum number is reached, the power supply port 3 is controlled to supply power to the electric vehicle.

In a preferred embodiment, as shown in FIG. 4 , step S3 is to continue charging the electric vehicle for an extended charging period, and determine whether the electric vehicle has been fully charged, and if so, control the power supply port 3 in step S31 Stop the power supply to the electric vehicle; if not, it is step S32 to further judge whether the number of other electric vehicles that have been connected to other power supply ports 3 and have not been charged for a basic charging period or an extended charging period is less than the maximum number , if yes, control the power supply port 3 to supply power to the electric vehicle in step S321; if not, control the power supply port 3 to stop supplying power to the electric vehicle in step S322, and wait for other power supply ports 3 to be connected and charged When the number of electric vehicles that have not reached the basic charging period or the extended charging period is less than the maximum number, step S3221 is to control the power supply port 3 to supply power to the electric vehicles. If the electric vehicle continues to charge for another extended charging period, judge and control the power supply port 3 to supply power to the electric vehicle or stop power supply in the same manner.

According to the above, the longest continuous parking time for electric vehicles such as electric vehicles is about 12 hours per day (such as after work to before going to work the next day), and charging with a 7K charger can increase the distance by 40 kilometers per hour Taking endurance as an example, an electric vehicle can increase its endurance by 160 kilometers by charging it for 4 hours, which should ensure normal use the next day. Taking a parking lot with 60 parking spaces as an example, assuming that the penetration rate of electric vehicles is 30% in the future, there are about 18 electric vehicles in the parking lot that need to be charged every day (60*30%=18). If charging piles are installed, the parking lot needs to apply to the power company for 126 kilowatts of electricity (7*18=126) to meet the charging needs of the 18 electric vehicles. If according to the control system of the present invention, the timing module can set a continuous charging period, that is, the basic charging period is 4 hours, then it can be divided into 3 charging steps per day (12/4=3), then the parking lot can be set The maximum number of electric vehicles that can be charged at the same time for each step is 6 (18/3=6), and assuming that each electric vehicle is charged with 7 watts of electricity, as long as the parking lot still has 42 watts of electricity (7* 6=42) load, it can meet the charging demand of the 18 electric vehicles, and even no need to apply for additional power from the power company.

Further, according to the control system and control equipment provided by the present invention, information about each power supply port 3 supplying power to electric vehicles or stopping power supply can be obtained, and the set basic charging period or extended charging period can be further adjusted to optimize charging efficiency For example, when the penetration rate of electric vehicles reaches 40%, there are about 24 electric vehicles parked in a parking lot with 60 parking spaces every day (60*40%=24), then the basic charging period is set If it is 3 hours, it can be divided into 4 charging steps per day (12/3=4), each time it can charge 6 electric vehicles with 7 kW of electricity, without changing the total power supply (42 kW) In this case, it can still meet the charging needs of about 24 electric vehicles.

According to the above, it can be understood that the embodiments of the present invention have the following beneficial effects: 1. By setting the maximum number of electric vehicles charged at the same time and the basic charging period, time-sharing charging can be performed under the existing power supply load , and effectively use the power supply, so as to avoid a single electric vehicle being used for charging for a long time, which is conducive to the use and charging of more electric vehicles; 2. The power supply port can use existing household power sockets or special power sockets, without the need to install charging Pile, which is conducive to the comprehensive laying of charging stations, and greatly reduces the construction cost of charging stations; 3. By identifying the user, the electric vehicle can be charged according to the user's request sequence and emergency needs.

The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of patent protection of the present invention. Therefore, all equivalent technical changes made by using the description and drawings of the present invention are included in the scope of protection of the present invention. Inside, together with Chen Ming.

1 Control equipment 11 Control Module 12 Load setting module 13 detection module 14 timing module 15 authorized modules 16 Information transmission module 17 Load sensing module 18 User authentication module 19 billing module 2 power supply circuit 3 power ports

FIG. 1 is a schematic block diagram of a time-sharing charging control system and equipment for an electric vehicle according to an embodiment of the present invention. FIG. 2 is a flowchart of a method for controlling a power supply port to start supplying power to an electric vehicle according to an embodiment of the present invention. FIG. 3 is a flow chart of a method for controlling a power supply port to supply power to an electric vehicle for an extended power supply period or to stop power supply according to an embodiment of the present invention. FIG. 4 is a flow chart of another extended charging period method for controlling a power supply port to supply power to an electric vehicle according to an embodiment of the present invention.

1 Control equipment 11 Control Module 12 Load setting module 13 detection module 14 timing module 15 authorized modules 16 Information transmission module 17 Load sensing module 18 User authentication module 19 billing module 2 power supply circuit 3 power ports

Claims (18)

A time-sharing charging control system for electric vehicles, which can charge the electric vehicles, comprising: a power supply circuit; a plurality of power supply ports, which are all coupled to the power supply circuit, and can be connected to the electric vehicles for charging Electric vehicle power supply; a control module, which is coupled with the power supply circuit to control the power supply ports to start or stop power supply to the connected electric vehicle; a load setting module, which is coupled with the control module , and can set the maximum number of electric vehicles charged by these power supply ports, and determine whether the number of electric vehicles connected to these power supply ports has reached the maximum number; a detection module, which is connected with these The power supply port is coupled, which can detect whether the power supply port starts or stops power supply to the connected electric vehicle, the electric vehicle connected to the power supply port is not fully charged or has been fully charged, and the connection of the electric vehicle The sequence of these power supply ports; a timing module, which is coupled with the control module, can set a basic charging period and calculate the time for these power supply ports to supply power to the connected electric vehicle; wherein, when The load setting module judges that the number of electric vehicles connected to these power supply ports does not reach the maximum number according to the number of connections between the power supply ports and electric vehicles transmitted by the detection module, and there is an electric vehicle connected to the power supply port again. When waiting for the power supply port, the control module controls the power supply port to start supplying power to the electric vehicle; and When the detection module detects that the power supply port has fully charged the connected electric vehicle, or the timing module calculates that the time for the power supply port to supply power to the connected electric vehicle has reached the basic charging period , the control module controls the power supply ports to stop supplying power to the electric vehicle. The time-sharing charging control system for electric vehicles as described in claim 1, wherein the timing module can set an extended charging period, when the timing module calculates the charging time of the electric vehicles connected to the power supply ports When the basic charging period is reached and the detection module detects that the electric vehicle is not fully charged, the control module controls the power supply ports to supply power to the electric vehicle for the extended charging period. The time-sharing charging control system for electric vehicles as described in Claim 2, wherein when the time for the power supply ports to supply power to the connected electric vehicles has reached the basic charging period and the extended charging period, and the detection The module detects that the electric vehicle is not fully charged, and the control module controls the power supply ports to supply power to the electric vehicle for another extended charging period. The time-sharing charging control system for electric vehicles as described in claim 1, wherein the load setting module judges the number of connections between the power supply ports and the electric vehicle according to the number of connections between the power supply ports and the electric vehicle. When the connected electric vehicles have reached the maximum number, and the electric vehicles connected to the power supply ports have been fully charged or the power supply time has reached the basic charging period, the control module controls the power supply ports to The electric vehicles stop power supply, and according to the order in which the electric vehicles are connected to the power supply ports, control the power supply ports to supply power to other electric vehicles connected later in the basic charging period. The time-sharing charging control system for electric vehicles as described in Claim 4, wherein the timing module can be set to extend the charging period, when the timing module calculates the charging time of the electric vehicles connected to the power supply ports The basic charging period has been reached, and the detection module detects that the electric vehicle is not fully charged, and other electric vehicles connected to the power supply port later have been fully charged or have been powered for the basic charging period , the control module controls the power supply ports to supply power to the electric vehicle for the extended charging period according to the order in which the electric vehicles are connected to the power supply ports. The time-sharing charging control system for electric vehicles as described in claim 5, wherein when the power supply ports supply power to the connected electric vehicles for the basic charging period and the extended charging period, and the detection The module detects that the electric vehicle is not fully charged, the control module controls the power supply ports to stop power supply to the electric vehicle, and controls the power supply ports according to the order in which the electric vehicles are connected to the power supply ports Powering the electric vehicle for another extended charging period. The time-sharing charging control system for electric vehicles as described in claim 1, which further has an authorization module, which is coupled to the control module and can send an extended charging request to one of the power supply ports. The control module controls one of the power supply ports to supply power to the connected electric vehicle for an extended charging period when the control module receives the extended charging request. The time-sharing charging control system for electric vehicles as described in claim 1, the detection module further has a load sensing module, and the load sensing module can sense the current or voltage of the power supply circuit, And determine whether the electric vehicles connected to these power supply ports are fully charged or not. The time-sharing charging control system for electric vehicles as described in Claim 1, which further has a user authentication module, the user authentication module is coupled to the control module and can send a power supply request corresponding to one of the power supply ports , the control module may control the power supply ports to supply power to the connected electric vehicles during the basic charging period according to the order in which the electric vehicles are connected to the power supply ports according to the order in which the power supply requests are received. A time-sharing charging control device for an electric vehicle, which connects a plurality of power supply ports through a power supply circuit, and the power supply ports can be connected to the electric vehicle to supply power to the electric vehicle, including: a control module, which is connected to the power supply Loop coupling to control the power supply ports to start or stop power supply to the connected electric vehicle; a load setting module, which is coupled with the control module, and can be used to set the electric vehicles charged by the power supply ports The maximum number of vehicles, and determine whether the number of electric vehicles connected to the power supply port exceeds the maximum number; a detection module, which is coupled with the power supply port, can detect the pair of power supply ports The connected electric vehicles start or stop supplying power, the electric vehicles connected to these power supply ports are not fully charged or fully charged, and the order in which the electric vehicles are connected to these power supply ports; a timing module, It is coupled with the control module and can be used to set a basic charging period and calculate the time when these power supply ports supply power to the connected electric vehicles; Wherein, when the load setting module determines that the number of electric vehicles connected to these power supply ports does not reach the maximum number according to the number of connections between the power supply ports and electric vehicles transmitted by the detection module, and there is another electric vehicle When connected to the power supply ports, the control module controls the power supply ports to start supplying power to the electric vehicles; and when the detection module detects that the power supply ports have fully charged the connected electric vehicles, Or when the timing module calculates that the time for the power supply ports to supply power to the connected electric vehicle has reached the basic charging period, the control module controls the power supply ports to stop supplying power to the electric vehicle. The time-sharing charging control device for electric vehicles as described in claim 10, wherein the timing module can set an extended charging period, when the timing module calculates the charging time of the electric vehicles connected to the power supply ports When the basic charging period is reached and the detection module detects that the electric vehicle is not fully charged, the control module controls the power supply ports to supply power to the electric vehicle for the extended charging period. The time-sharing charging control device for electric vehicles as described in claim 11, wherein when the time for the power supply ports to supply power to the connected electric vehicles has reached the basic charging period and the extended charging period, and the detection The module detects that the electric vehicle is not fully charged, and the control module controls the power supply ports to supply power to the electric vehicle for another extended charging period. The time-sharing charging control device for electric vehicles as described in claim 10, wherein when the load setting module judges the number of connections between the power supply ports and the electric vehicles transmitted by the detection module The number of connected electric vehicles has reached the maximum number, and there are electric vehicles connected to such power supply ports When the communication tool is fully charged or the power supply time has reached the basic charging period, the control module controls the power supply ports to stop the power supply to the electric vehicle, and according to the order in which the electric vehicle is connected to the power supply ports, Controlling the power supply ports to supply power to other electric vehicles connected later in the basic charging period. The time-sharing charging control device for electric vehicles as described in claim 13, wherein the timing module can set an extended charging period, when the timing module calculates the charging time of the electric vehicles connected to the power supply ports The basic charging period has been reached, and the detection module detects that the electric vehicle is not fully charged, and other electric vehicles connected to the power supply port later have been fully charged or have been powered for the basic charging period , the control module controls the power supply ports to supply power to the electric vehicle for the extended charging period according to the order in which the electric vehicles are connected to the power supply ports. The time-sharing charging control device for electric vehicles as described in claim 14, wherein when the time for the power supply ports to supply power to the connected electric vehicles has reached the basic charging period and the extended charging period, and the detection The module detects that the electric vehicle is not fully charged, the control module controls the power supply ports to stop power supply to the electric vehicle, and controls the power supply ports according to the order in which the electric vehicles are connected to the power supply ports Powering the electric vehicle for another extended charging period. The time-sharing charging control device for electric vehicles as described in claim 10 further has an authorization module, which is coupled to the control module and can send an extended charging request to one of the power supply ports. The control module controls one of the power supply ports to supply power to the connected electric vehicle for an extended charging period when the control module receives the extended charging request. In the time-sharing charging control device for electric vehicles as described in Claim 10, the detection module further has a load sensing module, and the load sensing module can sense the current or voltage of the power supply circuit, And determine whether the electric vehicles connected to these power supply ports are fully charged or not. The time-sharing charging control device for electric vehicles as described in Claim 10 further has a user authentication module, which is coupled to the control module and can send a power supply request corresponding to one of the power supply ports , the control module may control the power supply ports to supply power to the connected electric vehicles during the basic charging period according to the order in which the electric vehicles are connected to the power supply ports according to the order in which the power supply requests are received.

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