Control method, system and equipment for charging and discharging of charging station and medium

Abstract

The invention provides a charging station charging and discharging control method, system, device and medium, and the control method comprises the steps: obtaining the charging and discharging information of a vehicle end, the charging and discharging information comprises the charging electric quantity upper limit, the discharging electric quantity lower limit and the real-time electric quantity, and calculating and generating the corresponding just-needed charging total power based on the discharging electric quantity lower limit and the real-time electric quantity, the vehicle end comprises a first vehicle end and a second vehicle end, the first vehicle end participates in discharging, and the second vehicle end does not participate in discharging; obtaining the total supply power of the transformer substation in the transformer area, and comparing the total supply power with the total power which just needs to be charged; when the supply total power is greater than or equal to the total power required to be charged just now, the first vehicle end and / or the second vehicle end are / is charged; and when the total supply power is smaller than the total just required charging power, sending a power increase request to the transformer area substation, and / or controlling the first vehicle end to discharge. According to the invention, real-time dynamic adjustment of electric power in the transformer substation in the transformer area can be realized.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a method, system, device and medium for controlling charging and discharging of a charging station. Background Art

[0002] my country's new energy vehicle industry has entered a stage of rapid development. With the continuous increase in the number of new energy vehicles, the need for charging is also increasing, which will bring huge pressure to the operation of the power grid. Since new energy vehicles have large-capacity power batteries and are stationary most of the time, they have energy storage characteristics. Therefore, studying the "vehicle-grid interaction" between new energy vehicles and the power grid is conducive to stimulating the regulation potential of new energy vehicles as flexible energy storage resources and improving the access and absorption capacity of the power grid for clean energy.

[0003] However, the existing charging piles can only charge electric vehicles, and when the power supply in the substation is insufficient and there are multiple electric vehicles with a large amount of remaining power, it cannot meet the charging needs of other electric vehicles with a lower remaining power. Therefore, there is room for improvement. Summary of the invention

[0004] In view of the shortcomings of the prior art described above, an object of the present invention is to provide a charging and discharging control method, system, device and medium for a charging station, so as to solve the problem in the prior art that the charging needs of car owners cannot be met due to insufficient power in the substation.

[0005] To achieve the above-mentioned purpose and other related purposes, the present invention provides a charging and discharging control method for a charging station, which is applied to a charging and discharging management platform, wherein the charging and discharging management platform is connected to a vehicle terminal, a transformer substation in a substation area, and a charging pile in communication, and the control method includes:

[0006] Acquire charging and discharging information of the vehicle end, the charging and discharging information including the upper limit of charging power, the lower limit of discharging power and the real-time power, and calculate and generate the corresponding rigid demand charging total power based on the lower limit of discharging power and the real-time power, the vehicle end including the first vehicle end and the second vehicle end, the first vehicle end is the vehicle end participating in discharging, and the second vehicle end is the vehicle end not participating in discharging;

[0007] Obtaining the total power supplied by the transformer substation in the substation area, and comparing the total power supplied with the total power of the rigid demand charging;

[0008] When the total supply power is greater than or equal to the total charging power required, charging the first vehicle end and / or the second vehicle end;

[0009] When the total supply power is less than the total charging power required, a power increase request is sent to the substation in the area, and / or the first vehicle end is controlled to discharge.

[0010] In one embodiment of the present invention, the charging and discharging information of the vehicle end is obtained, the charging and discharging information includes the upper limit of charging power, the lower limit of discharging power and the real-time power, and based on the lower limit of discharging power and the real-time power, the corresponding rigid demand charging total power is calculated and generated, the vehicle end includes a first vehicle end and a second vehicle end, the first vehicle end is a vehicle end participating in discharging, and the second vehicle end is a vehicle end not participating in discharging, and the steps include:

[0011] Obtain the upper limit of charging power, lower limit of discharging power and real-time power of the vehicle;

[0012] The vehicle end participating in the discharge is represented as a first vehicle end, and the vehicle end not participating in the discharge is represented as a second vehicle end;

[0013] Calculate the charging power of all the first vehicle terminals whose real-time power is less than the lower limit of the discharge power thereof, and express it as the first charging power;

[0014] Calculate the charging power of all the second vehicle terminals whose real-time power is less than the upper limit of the charging power, and express it as the second charging power;

[0015] The first charging power and the second charging power are added together to obtain the just-needed charging total power.

[0016] In one embodiment of the present invention, when the total supply power is greater than or equal to the total charging power required, the step of charging the first vehicle end and / or the second vehicle end includes:

[0017] When the total supply power is greater than or equal to the total charging power just required, charging the first vehicle end and the second vehicle end corresponding to the total charging power just required;

[0018] Calculate the charging power of all first vehicle terminals whose real-time power is less than the upper limit of the charging power and greater than the lower limit of the discharging power, and express it as the total power of other requirements;

[0019] Determine whether the difference between the total supply power and the total charging power required is greater than the total power required for other purposes;

[0020] When the difference between the total supply power and the total charging power required is greater than the total power required for other requirements, charging the first vehicle end corresponding to the total power required for other requirements, and sending a power reduction request to the substation in the area;

[0021] When the difference between the total supply power and the total charging power for rigid demand is less than or equal to the total power for other demands, the first vehicle end corresponding to the total power for other demands is charged in the order of real-time power from small to large.

[0022] In one embodiment of the present invention, the step of sending a power reduction request to the substation in the area includes:

[0023] Calculate the generated power reduction power according to the total supply power, the total rigid charging power and the total other demand power;

[0024] According to the power reduction power, a power reduction request is sent to the substation.

[0025] In one embodiment of the present invention, when the total supply power is less than the total charging power required, the step of sending a power increase request to the substation in the area, and / or controlling the second vehicle end to discharge includes:

[0026] Calculate the discharge power of all first vehicle terminals whose real-time power is greater than the upper limit of the discharge power, and express it as the total discharge power;

[0027] Determining whether the difference between the rigid-demand charging total power and the supply total power is greater than the discharge total power;

[0028] When the difference between the rigid demand charging total power and the supply total power is greater than the discharge total power, a power increase request is sent to the substation in the area, and / or a discharge request is sent to the corresponding first vehicle end;

[0029] When the difference between the rigidly required total charging power and the supplied total power is less than or equal to the total discharge power, a discharge request is sent to the corresponding first vehicle end.

[0030] In one embodiment of the present invention, the step of sending a power increase request to the substation in the area includes:

[0031] Calculate and generate the power to be increased according to the rigidly required total charging power, the total supply power and the total discharge power;

[0032] A power increase request is generated according to the power to be increased, and the power increase request is sent to the substation.

[0033] In one embodiment of the present invention, when the difference between the rigid charging total power and the supply total power is less than or equal to the discharge total power, the step of sending a discharge request to the corresponding first vehicle terminal includes:

[0034] Calculating the difference between the total charging power required and the total supply power, and expressing it as the power to be discharged;

[0035] According to the power to be discharged, part of the first vehicle end is selected for discharging.

[0036] The present invention also provides a control system for charging and discharging of a charging station, comprising:

[0037] A power calculation module is used to obtain the charging and discharging information of the vehicle end, wherein the charging and discharging information includes the upper limit of charging power, the lower limit of discharging power and the real-time power, and calculate and generate the corresponding rigid demand charging total power based on the lower limit of discharging power and the real-time power. The vehicle end includes a first vehicle end and a second vehicle end, wherein the first vehicle end is a vehicle end participating in discharging, and the second vehicle end is a vehicle end not participating in discharging;

[0038] A power comparison module, used to obtain the total power supplied by the transformer substation in the substation area, and compare the total power supplied with the total power of the rigid demand charging;

[0039] A charge and discharge control module, configured to charge the first vehicle end and / or the second vehicle end when the total supply power is greater than or equal to the total charging power required;

[0040] The charging and discharging control module is also used to send a power increase request to the substation in the substation area when the total supply power is less than the total charging power required, and / or control the first vehicle end to discharge.

[0041] The present invention also provides a computer device, characterized in that it includes a memory, a processor, and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the steps of the charging and discharging control method of the charging station as described in any one of the above items are implemented.

[0042] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for controlling charging and discharging of a charging station as described in any one of the above items are implemented.

[0043] As described above, a control method, system, equipment and medium for charging and discharging of a charging station of the present invention have the following beneficial effects: the present invention can realize power interaction between the substation and the vehicle end, thereby realizing real-time dynamic adjustment of the power in the substation, so that when the power supply in the substation is insufficient, the charging demand of the vehicle end can be met by increasing the power grid, and the discharge of electric vehicles that can participate in the discharge and have higher real-time power can be controlled to meet the charging needs of other electric vehicles that cannot participate in the discharge or have lower real-time power, thereby meeting the support needs of the power grid while meeting the car owner's car use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Shown is a connection diagram of a charge and discharge management platform in one embodiment of the present invention;

[0045] Figure 2 Display as Figure 1 Structural block diagram of the local structure in;

[0046] Figure 3 A schematic diagram showing a flow chart of a method for controlling charging and discharging of a charging station provided by an embodiment of the present invention;

[0047] Figure 4 A block diagram showing a control system for charging and discharging of a charging station provided by an embodiment of the present invention;

[0048] Figure 5 Shown is a structural schematic diagram of an electronic device according to an embodiment of the present invention.

[0049] Component number description:

[0050] 10. Vehicle end; 11. Human-machine interaction interface; 12. First communication module; 13. First control module; 14. Bidirectional charger;

[0051] 20. Power grid;

[0052] 30. Charging and discharging pile; 31. Charging and discharging pile body; 32. Second communication module; 33. Second control module; 34. Bidirectional metering meter;

[0053] 40. Substation in the area; 50. Charging and discharging management platform;

[0054] 61. Power calculation module; 62. Power comparison module; 63. Charge and discharge control module.

[0055] 70. Electronic device; 71. Memory; 72. Processor. DETAILED DESCRIPTION

[0056] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0057] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0058] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0059] The present invention provides a control method, system, device and medium for charging and discharging of a charging station, which can use the power battery of an electric vehicle as a distributed power source in a power grid, realize energy interaction between the power grid and the electric vehicle, thereby meeting the vehicle owner's vehicle use needs while responding to the support needs of the power grid. The following is a detailed description through specific embodiments.

[0060] See also Figure 1 The charging and discharging control method of the charging station of the present invention can be applied to the charging and discharging management platform 50. The method realizes the energy interaction between the vehicle end 10 and the substation 40 in the substation area by controlling the charging or discharging of the vehicle end 10. Among them, the charging and discharging pile 30 can be electrically connected to the vehicle end 10 for charging or drawing power from the vehicle end 10. The substation area substation 40 can be electrically connected to the power grid 20 for receiving power provided by the power grid 20 and supplying power to multiple charging and discharging piles 30. The charging and discharging management platform 50 is also respectively connected to the substation area substation 40 and the charging and discharging pile 30 for communication.

[0061] In this embodiment, the charge and discharge management platform 50 is used to obtain the total supply power of the substation 40, calculate the total charging power of all the vehicle ends 10 connected to the charging and discharging piles 30 that do not participate in the discharge and whose real-time power is less than the lower limit of the discharge power according to the real-time power of the vehicle end 10, and determine the charging strategy of the substation 40 according to the total supply power and the total charging power. Among them, the charging strategy of the substation 40 may include but is not limited to when the total supply power is greater than or equal to the total charging power, the charge and discharge management platform 50 prompts the substation 40 to charge the vehicle end 10 directly through the charging and discharging piles 30. When the total supply power is less than the total charging power, the charge and discharge management platform 50 sends a power increase request to the substation 40 according to the upper limit of the charging power and the lower limit of the discharging power of the vehicle end 10 connected to the charging and discharging piles 30, or adjusts the corresponding vehicle end 10 to discharge. The substation 40 is also used to distribute and process the power added by the power grid 20 or the power obtained by the vehicle end discharge to charge the vehicle end 10.

[0062] See also Figure 1In one embodiment of the present invention, the vehicle end 10 may also include but is not limited to a first communication module 12, a first control module 13, a bidirectional charger 14, and a power battery 15. The first communication module 12 may be used to send battery information, charging requests, and / or discharge requests of the vehicle end 10 to the charging and discharging pile 30.

[0063] See also Figure 1 , Figure 2 In one embodiment of the present invention, the battery information may include the real-time power level, charging power upper limit, discharging power lower limit, charging power and discharging power of the power battery 15 in the vehicle end 10. It should be noted that the charging power upper limit and discharging power lower limit of the power battery 15 may also be selected and determined by the user through the human-computer interaction interface 11, so the charging power upper limit and discharging power lower limit of the power battery 15 may be preset values ​​by the user. However, it is not limited to this. In order to improve the service life of the power battery 15, the charging power upper limit and discharging power lower limit of the power battery 15 may also be preset fixed values, but the charging power upper limit and discharging power lower limit of the power battery 15 corresponding to different vehicle ends 10 may be different.

[0064] The first communication module 12 is also used to receive a discharge request sent by the charging and discharging pile 30, and send it to the first control module 13. The first control module 13 can be used to determine whether the power battery 15 participates in the discharge, and whether the real-time power of the power battery 15 is greater than the lower limit of the discharge power. When the power battery 15 participates in the discharge, and the real-time power is greater than the lower limit of the discharge power, the first control module 13 issues a discharge request to prompt the bidirectional charger 14 to discharge the power battery 15. Otherwise, the first control module 13 issues a charging request to prompt the bidirectional charger 14 to charge the power battery 15.

[0065] The bidirectional charger 14 can be electrically connected to the power battery 15, so as to convert the AC voltage of the charging and discharging pile 30 into a DC voltage when the power battery 15 is charged, and transmit the DC voltage to the power battery 15 to realize charging of the power battery 15. The bidirectional charger 14 is also used to invert the DC voltage of the power battery 15 into an AC voltage when the power battery 15 is discharged, and directly transmit the AC voltage to the charging and discharging pile 30 to realize discharging of the power battery 15.

[0066] See also Figure 1 and Figure 2In one embodiment of the present invention, the charging and discharging pile 30 may include but is not limited to a charging and discharging pile body 31 and a second communication module 32, and the second communication module 32 may be arranged in the charging and discharging pile body 31. Among them, a plurality of charging and discharging pile bodies 31 may be provided, and each charging and discharging pile body 31 may be used to charge or discharge the power battery 15 of the vehicle end 10 connected thereto. The second communication module 32 may be used to receive battery information, charging requests and / or dischargeable requests sent by the first communication module 12, and transmit them to the charging and discharging management platform 50. The second communication module 32 is also used to receive a discharge request from the charging and discharging management platform 50, and send it to the first communication module 12.

[0067] Furthermore, the charging and discharging pile 30 may also include a second control module 33 and a bidirectional meter 34. The second control module 33 and the bidirectional meter 34 may be arranged in the charging and discharging pile body 31. The second control module 33 may be connected to the first control module 13 for communication, so that when the plug of the charging and discharging pile 30 is inserted into the vehicle end 10, the control pilot signal (Control Pilot, CP signal) and the charge control signal (Charge Control, CC signal) between the vehicle end 10 and the charging and discharging pile 30 can be detected and controlled to ensure that the vehicle end 10 and the charging and discharging pile 30 can maintain normal communication and power interaction.

[0068] It should be noted that the CP signal is a signal used to establish communication and control protocols between the vehicle end 10 and the charging and discharging pile 30. The CP signal can detect the physical connection status between the vehicle end 10 and the charging and discharging pile 30 to confirm whether it has been correctly connected. Once the connection is confirmed to be safe and correct, the CP signal is also used to start and maintain communication during the charging and discharging process. Through the CP signal, the vehicle end 10 and the charging and discharging pile 30 can negotiate technical parameters such as charging voltage and current to ensure the safety and efficiency of the charging process. Unlike the CP signal that provides communication and protocol management, the CC signal is more focused on controlling the actual charging process, and is used to control the actual charging current and discharging current to ensure that the charging process and the discharging process can be safely charged according to the capacity of the power battery 15 and the charging equipment.

[0069] Furthermore, a bidirectional metering meter 34 can be set on the circuit between the bidirectional charger 14 and the substation 40 to measure the power transmitted from the substation 40 to the vehicle end 10 and the power discharged from the vehicle end 10 to the substation 40, so as to facilitate subsequent charging billing and discharging billing.

[0070] See also Figure 1 and Figure 2In one embodiment of the present invention, a plurality of substations 40 may be provided, and each substation 40 may be electrically connected to a plurality of charging and discharging piles 30, for receiving the discharge power of the plurality of charging and discharging piles 30 in the discharge state and the grid power provided by the grid 20, and distributing and processing the discharge power and the grid power provided by the grid 20, so as to supply power to the charging and discharging piles 30 in the charging state. In addition, it should be noted that a plurality of substations 40 may be electrically connected to the same grid 20, and a plurality of substations 40 may share a cloud service end 41, for adjusting the power provided by the grid 20 to the corresponding substation 40 according to a power increase request or a power reduction request.

[0071] See also Figure 1 and Figure 2 In one embodiment of the present invention, the charge and discharge management platform 50 may be a charge and discharge processing module disposed in the charge and discharge pile 30, but is not limited thereto. The charge and discharge management platform 50 may also be a computer device with an integrated processor independent of the charge and discharge pile 30. The charge and discharge management platform 50 may be connected to the second communication module 32 in the charge and discharge pile 30 for communication, so as to obtain the upper limit of the charge power, the lower limit of the discharge power and the real-time power in the second communication module 32.

[0072] Furthermore, the charge and discharge management platform 50 can also be used to obtain the total power supplied by the area substation 40. That is, the total power supplied is the difference between the total power of the area substation 40 and the power of other loads.

[0073] The charging and discharging management platform 50 can also be used to calculate the total charging power of all vehicle ends 10 connected to the charging and discharging pile 30 that do not participate in discharging and whose real-time power is less than the lower limit of the discharge power according to the real-time power of the vehicle end 10. That is, the total charging power of the just-needed charging is the sum of the charging powers of all second vehicle ends whose real-time power is less than the lower limit of the discharge power.

[0074] The charge and discharge management platform 50 is also used to calculate the total power required for other first vehicle terminals connected to the charge and discharge pile 30 and having a real-time power less than the upper limit of the charging power according to the real-time power of the vehicle terminal 10. That is, the total power required for other first vehicle terminals is the sum of the charging powers of all first vehicle terminals whose real-time power is less than the upper limit of the charging power.

[0075] The charge and discharge management platform 50 is also used to calculate the total discharge power of all first vehicle terminals connected to the charge and discharge pile 30 whose real-time power is greater than the lower limit of the discharge power according to the real-time power of the vehicle terminal 10. That is, the total discharge power is the sum of the discharge power of all first vehicle terminals whose real-time power is greater than the lower limit of the discharge power.

[0076] Furthermore, the charging and discharging management platform 50 is also used to determine the charging strategy of the substation 40 according to the total supply power and the total charging power for the rigid demand, based on the total supply power of the substation 40, the total charging power for the rigid demand of the vehicle end 10, the total power of other demands, and the total discharge power. That is, when the total supply power is greater than or equal to the total charging power for the rigid demand, the substation 40 is prompted to charge the vehicle end 10 directly through the charging and discharging pile 30. When the total supply power is less than the total charging power for the rigid demand, a power increase request is sent to the substation 40 according to the upper limit of the charging power and the lower limit of the discharging power of the vehicle end 10 connected to the charging and discharging pile 30, or the corresponding vehicle end 10 is adjusted to discharge.

[0077] It is worth further explaining that when the charge and discharge management platform 50 determines that the total supply power is greater than or equal to the total charging power for rigid demand, it means that the power provided by the substation 40 can meet the charging needs of all vehicle terminals 10 with rigid charging needs in the substation. Therefore, the charge and discharge management platform 50 can prompt the substation 40 to directly charge all second vehicle terminals whose real-time power is less than the lower limit of the discharge point power through the charge and discharge pile 30.

[0078] Specifically, the charge and discharge management platform 50 is also used to determine the difference between the total supply power and the total charging power and the total power of other requirements when the total supply power is greater than or equal to the total charging power. Among them, if the difference between the total supply power and the total charging power is greater than the total power of other requirements, it means that the power provided by the substation 40 can not only meet the charging needs of all vehicle ends 10 in the substation, but also have excess power. Therefore, the charge and discharge management platform 50 can prompt the substation 40 to directly charge all vehicle ends 10 that need to be charged through the charging and discharging pile 30, and send a power reduction request to the substation 40 to control the substation 40 to reduce the power demand to just meet the charging needs of all vehicle ends that need to be charged in the substation. Among them, the power reduction request includes a power reduction threshold, which is generated based on the total supply power, the total charging power and the total power of other requirements. That is, the power reduction threshold can be the difference between the total supply power, the total charging power and the total power of other requirements.

[0079] If the difference between the total supply power and the total power of the rigid charging is less than or equal to the total power of other demands, it means that after the direct charging of all second vehicle ends whose real-time power is less than the lower limit of the discharge point power is completed in the substation 40, there is still excess power left to charge other vehicle ends. Even if the remaining power may not be able to meet the charging needs of all other vehicle ends to be charged. Therefore, the charging and discharging management platform 50 can prompt the substation 40 to charge the vehicle ends 10 in the order of the real-time power of the vehicle ends 10 that meet the charging conditions from small to large through the charging and discharging piles 30, and the charging condition is that the real-time power of the vehicle end 10 is less than the upper limit of the charging power.

[0080] It is worth further explaining that when the charge and discharge management platform 50 determines that the total supply power is less than the total power for just-demand charging, it means that the power provided by the substation 40 in the substation area cannot meet the charging needs of all second vehicle terminals in the substation area whose real-time power is less than the lower limit of the discharge power. Therefore, the charge and discharge management platform 50 needs to send a power increase request to the substation 40 in the substation area according to the upper limit of the charge power and the lower limit of the discharge power of the vehicle terminal 10 connected to the charge and discharge pile 30, or adjust the corresponding vehicle terminal 10 to discharge, so as to increase the power of the substation 40 in the substation area, thereby meeting the charging needs of all vehicle terminals 10 that meet the charging conditions.

[0081] The charge and discharge management platform 50 is also used to determine the difference between the just-needed charging total power and the total supply power and the total discharge power when the total supply power is less than the just-needed charging total power. Among them, if the difference between the just-needed charging total power and the total supply power is greater than the total discharge power, it means that even if all the first vehicle ends whose real-time power is greater than the lower limit of the discharge power are discharged, the just-needed charging total power of all the second vehicle ends whose real-time power is less than the lower limit of the discharge power cannot be met. Therefore, the charge and discharge management platform 50 needs to send a power increase request to the substation 40. The power increase request includes a power increase threshold, and the power increase threshold is generated based on the just-needed charging total power, the supply total power and the discharge total power. Specifically, the power increase threshold can be the difference between the just-needed charging total power, the supply total power and the discharge total power.

[0082] If the difference between the total power of just-demand charging and the total power of supply is less than or equal to the total power of discharge, it means that after discharging all first vehicle ends whose real-time power is greater than the lower limit of discharge power, the total power of just-demand charging of all second vehicle ends whose real-time power is less than the lower limit of discharge power can be met. Therefore, the charge-discharge management platform 50 needs to generate a discharge request according to the discharge request and send it to the corresponding charge-discharge pile 30 to control the discharge of the first vehicle end.

[0083] See also Figure 1 and Figure 2In one embodiment of the present invention, the charge and discharge management platform 50 is also used to randomly select multiple first vehicle terminals for discharge according to the power difference that needs to be supplemented when the difference between the just-demanded charging total power and the supplied total power is less than or equal to the total discharge power. The power difference is generated based on the just-demanded charging total power and the supplied total power. That is, the power difference is the difference between the just-demanded charging total power and the supplied total power.

[0084] However, the charging and discharging management platform 50 is also used to sort all first vehicle terminals from large to small according to the corresponding dischargeable power values ​​when the difference between the total power of the rigid charging demand and the total power of the supply is less than or equal to the total discharge power, and select multiple first vehicle terminals for discharge in order according to the power difference required to be supplemented. The dischargeable power value is the difference between the real-time power corresponding to the first vehicle terminal and the lower limit of the discharge power.

[0085] It should be noted that after the charge and discharge management platform 50 sorts the corresponding first vehicle ends from large to small according to the dischargeable power value, it is also necessary to add the discharge powers of multiple corresponding first vehicle ends in sequence according to the arrangement order until the sum of the multiple discharge powers obtained is equal to the power difference. The corresponding first vehicle end is then identified as the target discharge vehicle end, and a discharge request is sent to the target discharge vehicle end to adjust the corresponding vehicle end to discharge.

[0086] It should also be noted that when the substation 40 obtains the increased grid power from the grid 20 or the power obtained by the discharge of the vehicle end 10, it is necessary to distribute the power according to the difference between the real-time power of all vehicle ends to be charged and the upper limit of the charging power, so as to meet the charging needs of more vehicle ends 10 as much as possible.

[0087] See also Figure 3 In one embodiment of the present invention, the method for controlling charging and discharging of a charging station may include the following steps:

[0088] Step S100, acquiring charging and discharging information of the vehicle end, wherein the charging and discharging information includes an upper limit of charging power, a lower limit of discharging power, and real-time power, and calculating and generating a corresponding rigid-demand charging total power based on the lower limit of discharging power and the real-time power, wherein the vehicle end includes a first vehicle end and a second vehicle end, wherein the first vehicle end is a vehicle end participating in discharging, and the second vehicle end is a vehicle end not participating in discharging;

[0089] Step S200: obtaining the total power supplied by the transformer substation in the substation area, and comparing the total power supplied with the total power of the rigid-demand charging;

[0090] Step S300: When the total supply power is greater than or equal to the total charging power required, charging the first vehicle end and / or the second vehicle end;

[0091] Step S400: When the total supply power is less than the total charging power required for charging, a power increase request is sent to the substation in the area, and / or the first vehicle end is controlled to discharge.

[0092] In one embodiment of the present invention, when step S100 is executed, the charging and discharging information of the vehicle end is obtained, and the charging and discharging information includes the upper limit of charging power, the lower limit of discharging power and the real-time power, and based on the lower limit of discharging power and the real-time power, the corresponding rigid demand charging total power is calculated and generated, and the vehicle end includes a first vehicle end and a second vehicle end, the first vehicle end is a vehicle end participating in discharging, and the second vehicle end is a vehicle end not participating in discharging. Specifically, the following steps may be included:

[0093] Step S110, obtaining the upper limit of charging power, the lower limit of discharging power and the real-time power of the vehicle;

[0094] Step S120, the vehicle end participating in the discharge is represented as a first vehicle end, and the vehicle end not participating in the discharge is represented as a second vehicle end;

[0095] Step S130, calculating the charging power of all the first vehicle terminals whose real-time power is less than the lower limit of the discharge power thereof, and expressing it as the first charging power;

[0096] Step S140, calculating the charging power of all the second vehicle terminals whose real-time power is less than the upper limit of the charging power, and expressing it as the second charging power;

[0097] Step S150: Add the first charging power and the second charging power to obtain the just-needed charging total power.

[0098] In one embodiment of the present invention, when executing step S110 to step S120, specifically, the charging and discharging information of the corresponding vehicle end 10 is obtained through the charging and discharging device 30. The charging and discharging information may include a preset upper limit of charging power, a lower limit of discharging power, and real-time power. In this embodiment, the vehicle end 10 may include a first vehicle end and a second vehicle end, and the vehicle end 10 is an electric vehicle provided with a power battery 15. Among them, the first vehicle end may be a vehicle end participating in the discharge, that is, the first vehicle end is an electric vehicle that can participate in the discharge. The second vehicle end may be a vehicle end that does not participate in the discharge, that is, the second vehicle end is an electric vehicle that does not participate in the discharge and can only be charged. It should be noted that the first vehicle end and the second vehicle end can be selected and determined by the user through the human-computer interaction interface 11 in the vehicle end 10. That is, if the user selects the vehicle end 10 to participate in the discharge, that is, the vehicle end 10 is the first vehicle end. If the user selects the vehicle end 10 not to participate in the discharge, the vehicle end 10 is the second vehicle end.

[0099] In one embodiment of the present invention, when executing step S130 to step S150, specifically, firstly, the charging power of the first vehicle end whose real-time power is less than the lower limit of its discharge power is calculated, and expressed as the first charging power. Then, the charging power of the second vehicle end whose real-time power is less than the upper limit of its charging power is calculated, and expressed as the second charging power. Finally, the first charging power and the second charging power are added to obtain the total charging power for the rigid demand.

[0100] In one embodiment of the present invention, when step S200 is executed, the total supply power of the substation is obtained, and the total supply power is compared with the total power of the rigid charging. Specifically, the total supply power of the substation 40 is first obtained, and the total supply power represents the maximum power that the substation 40 can provide at the current moment. Then, the total supply power is compared with the total power of the rigid charging, so as to determine the charging strategy of the substation 40.

[0101] In one embodiment of the present invention, when step S300 is executed, that is, when the total supply power is greater than or equal to the total charging power required, the first vehicle end and / or the second vehicle end is charged. Specifically, the following steps may be included:

[0102] Step S310: When the total supply power is greater than or equal to the total charging power for just-demand charging, charging the first vehicle end and the second vehicle end corresponding to the total charging power for just-demand charging;

[0103] Step S320, calculating the charging power of all first vehicle terminals whose real-time power is less than the upper limit of the charging power and greater than the lower limit of the discharging power, and expressing it as the total power required by others;

[0104] Step S330, determining whether the difference between the total supply power and the total rigid charging power is greater than the total other required power;

[0105] Step S340: When the difference between the total supply power and the total charging power required is greater than the total power required for other requirements, the first vehicle terminal corresponding to the total power required for other requirements is charged, and a power reduction request is sent to the substation in the area;

[0106] Step S350: When the difference between the total supply power and the total charging power required is less than or equal to the total power required for other purposes, the first vehicle end corresponding to the total power required for other purposes is charged in the order of real-time power from small to large.

[0107] In one embodiment of the present invention, when step S310 is executed, that is, when the total supply power is greater than or equal to the total power of just-demand charging, the first vehicle end and the second vehicle end corresponding to the total power of just-demand charging are charged. Specifically, first, when the total supply power is greater than or equal to the total power of just-demand charging, it indicates that the maximum power provided by the substation 40 at the current moment can meet the demand of the total power of just-demand charging. Therefore, the first vehicle end and the second vehicle end corresponding to the total power of just-demand charging can be directly charged, specifically the first vehicle end whose real-time power is less than the lower limit of its discharge power, and the second vehicle end whose real-time power is less than the upper limit of its charging power.

[0108] In one embodiment of the present invention, when executing steps S320 to S330, specifically, when the total supply power of the substation 40 is greater than or equal to the total charging power just required, it means that there is still surplus power in the total supply power, and other vehicle terminals can be charged at this time. First, calculate the charging power of the first vehicle terminal whose real-time power is less than its charging power upper limit and greater than its discharge power lower limit, and express it as the total power of other demands. Then determine whether the difference between the total supply power and the total charging power just required is greater than the total power of other demands, that is, whether the surplus power of the total supply power can meet the total power of other demands.

[0109] In one embodiment of the present invention, when step S340 is executed, that is, when the difference between the total supply power and the total charging power of the rigid demand is greater than the total power of other demands, the first vehicle end corresponding to the total power of other demands is charged, and a power reduction request is sent to the substation in the area. When the difference between the total supply power and the total charging power of the rigid demand is greater than the total power of other demands, the first vehicle end corresponding to the total power of other demands may be charged, and further, a power reduction request may be sent to the substation in the area.

[0110] In this embodiment, sending a power reduction request to the substation in the area may include the following steps:

[0111] Step S341, calculating the generated power reduction power according to the total supply power, the total rigid charging power and the total other demand power;

[0112] Step S342: Generate a power increase request according to the power reduction power, and send the power reduction request to the substation in the area.

[0113] In one embodiment of the present invention, when executing steps S341 to S342, specifically, first, according to the total supply power, the total charging power of the rigid demand, and the total power of other demands, the power reduction power is calculated, that is, the power remaining under the premise of satisfying the total supply power of the rigid demand charging and the total power of other demands is calculated, and recorded as the power reduction power. Then, according to the power reduction power, a power increase request is generated, and the power reduction request is sent to the substation 40 to notify the substation 40 to reduce the supplied electric power, so that the power use and supply are balanced.

[0114] In one embodiment of the present invention, when step S400 is executed, that is, when the total supply power is less than the total charging power required, a power increase request is sent to the substation in the area, and / or the first vehicle end is controlled to discharge. Specifically, the following steps may be included:

[0115] Step S410, calculating the discharge power of all first vehicle terminals whose real-time power is greater than the upper limit of the discharge power, and expressing it as the total discharge power;

[0116] Step S420, determining whether the difference between the rigid-demand charging total power and the supply total power is greater than the discharge total power;

[0117] Step S430: When the difference between the rigid demand charging total power and the supply total power is greater than the discharge total power, a power increase request is sent to the substation in the area, and / or a discharge request is sent to the corresponding first vehicle end;

[0118] Step S440: When the difference between the rigid-demand charging total power and the supplied total power is less than or equal to the discharge total power, a discharge request is sent to the corresponding first vehicle end.

[0119] In one embodiment of the present invention, when executing steps S410 to S420, specifically, when the total supply power is less than the total charging power just needed, that is, when the total supply power of the substation 40 cannot meet the total charging power just needed, power can be taken from the first vehicle end, or the total supply power of the substation 40 can be increased. First, the discharge power of all first vehicle ends whose real-time power is greater than the upper limit of their discharge power is calculated and expressed as the total discharge power. Then, it is determined whether the difference between the total charging power just needed and the total supply power is greater than the total discharge power, that is, whether the sum of the total supply power and the discharge power of all first vehicle ends can meet the total charging power just needed.

[0120] In one embodiment of the present invention, when executing steps S430 to S440, specifically, when the total supply power and the sum of the discharge power of all the first vehicle terminals can meet the total power required for charging, a discharge request can be sent to the corresponding first vehicle terminal to obtain power. When the total supply power and the sum of the discharge power of all the first vehicle terminals cannot meet the total power required for charging, a power increase request can be sent to the substation in the area. At the same time, according to the actual power demand, it is determined whether to send a discharge request to the corresponding first vehicle terminal.

[0121] In this embodiment, sending a power increase request to a transformer substation in a substation area may include the following steps:

[0122] Step S431, calculating and generating the power to be increased according to the rigidly required total charging power, the total supply power and the total discharge power;

[0123] Step S432: Generate a power increase request according to the power to be increased, and send the power increase request to the substation in the area.

[0124] In one embodiment of the present invention, when executing step S431 to step S432, specifically, first, according to the rigid charging total power, the supply total power and the discharge total power, the electric power required to be increased by the substation 40 is calculated and recorded as the power to be increased. Then, a power increase request is generated according to the power to be increased, and the power increase request is sent to the substation 40 to notify the substation 40 to increase the power supply, so as to meet the power demand of the rigid charging total power.

[0125] In this embodiment, when the difference between the rigidly required total charging power and the supplied total power is less than or equal to the total discharge power, sending a discharge request to the corresponding first vehicle end may include the following steps:

[0126] Step S441, calculating the difference between the rigid-demand charging total power and the supplied total power, and expressing it as the ready-to-discharge power;

[0127] Step S442: Select part of the first vehicle end for discharging according to the power to be discharged.

[0128] In one embodiment of the present invention, when executing steps S441 to S442, specifically, when the difference between the just-needed total charging power and the supplied total power is less than or equal to the discharged total power, at this time, the power demand of the just-needed total charging power can be met by taking power from part of the first vehicle ends. In this step, first, the difference between the just-needed total charging power and the supplied total power is calculated and expressed as the power to be discharged. Then, according to the power to be discharged, part of the first vehicle ends are selected for discharge. In this embodiment, part of the first vehicle ends can be selected for discharge in order from large to small power.

[0129] See also Figure 4 The present invention also provides a control system for charging and discharging of a charging station, which corresponds one-to-one to the control method in the above embodiment. The control system may include a power calculation module 61, a power comparison module 62, and a charging and discharging control module 63. The functional modules are described in detail as follows:

[0130] The power calculation module 61 can be used to obtain the charging and discharging information of the vehicle end, the charging and discharging information includes the upper limit of charging power, the lower limit of discharging power and the real-time power, and based on the lower limit of discharging power and the real-time power, calculate and generate the corresponding rigid demand charging total power, the vehicle end includes a first vehicle end and a second vehicle end, the first vehicle end is a vehicle end participating in discharging, and the second vehicle end is a vehicle end not participating in discharging. Further, the power calculation module 61 can be specifically used to obtain the upper limit of charging power, the lower limit of discharging power and the real-time power of the vehicle end; represent the vehicle end participating in discharging as the first vehicle end, and represent the vehicle end not participating in discharging as the second vehicle end; calculate the charging power of the first vehicle end whose real-time power is less than its lower limit of discharging power, and represent it as the first charging power; calculate the charging power of the second vehicle end whose real-time power is less than its upper limit of charging power, and represent it as the second charging power; add the first charging power and the second charging power to obtain the rigid demand charging total power.

[0131] The power comparison module 62 can be used to obtain the total power supplied by the substation in the area, and compare the total power supplied with the total power of the rigid charging. Further, the power comparison module 62 can be specifically used to first obtain the total power supplied by the substation in the area 40, and the total power supplied represents the maximum power that the substation in the area 40 can provide at the current moment. Then, the total power supplied is compared with the total power of the rigid charging, so as to determine the charging strategy of the substation in the area 40.

[0132] The charge and discharge control module 63 can be used to charge the first vehicle end and / or the second vehicle end when the total supply power is greater than or equal to the total charging power just required. Further, the charge and discharge control module 63 can be specifically used to charge the first vehicle end and the second vehicle end corresponding to the total charging power just required when the total supply power is greater than or equal to the total charging power just required; calculate the charging power of all first vehicle ends whose real-time power is less than the upper limit of their charging power and greater than the lower limit of their discharging power, and express it as the total power of other requirements; determine whether the difference between the total supply power and the total charging power just required is greater than the total power of other requirements; when the difference between the total supply power and the total charging power just required is greater than the total power of other requirements, charge the first vehicle end corresponding to the total power of other requirements, and send a power reduction request to the substation; when the difference between the total supply power and the total charging power just required is less than or equal to the total power of other requirements, charge the first vehicle end corresponding to the total power of other requirements in the order of real-time power from small to large.

[0133] The charge and discharge control module 63 is also used to send a power increase request to the substation when the total supply power is less than the total supply power, and / or control the first vehicle end to discharge. Further, the charge and discharge control module 63 can be specifically used to calculate the discharge power of all first vehicle ends whose real-time power is greater than the upper limit of their discharge power, and express it as the total discharge power; determine whether the difference between the total supply power and the total supply power is greater than the total discharge power; when the difference between the total supply power and the total charge power is greater than the total discharge power, send a power increase request to the substation, and / or send a discharge request to the corresponding first vehicle end; when the difference between the total supply power and the total charge power is less than or equal to the total discharge power, send a discharge request to the corresponding first vehicle end.

[0134] For the specific definition of the control system for charging and discharging of the charging station, please refer to the definition of the control method above, which will not be repeated here. Each module in the above control system can be implemented in whole or in part by software, hardware and a combination thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0135] An embodiment of the present invention also provides an electronic device, comprising: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by one or more processors, the electronic device implements the control method for charging and discharging of the charging station provided in the above-mentioned embodiments.

[0136] See also Figure 5 The electronic device 70 may include a memory 71, a processor 72 and a bus, and may also include a computer program stored in the memory 71 and executable on the processor 72, such as a control program for charging and discharging of a charging station.

[0137] Among them, the memory 71 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, mobile hard disk, multimedia card, card-type memory (for example: SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. The memory 71 may be an internal storage unit of the electronic device 70 in some embodiments, such as a mobile hard disk of the electronic device 70. The memory 71 may also be an external storage device of the electronic device 70 in other embodiments, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 70. Further, the memory 71 may also include both an internal storage unit of the electronic device 70 and an external storage device. The memory 71 can not only be used to store application software and various types of data installed in the electronic device 70, such as the code for controlling the charging and discharging of the charging station, but also be used to temporarily store data that has been output or is to be output.

[0138] In some embodiments, the processor 72 may be composed of an integrated circuit, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and a combination of various control chips. The processor 72 is the control core (Control Unit) of the electronic device 70, and uses various interfaces and lines to connect the various components of the entire electronic device 70, and executes or executes the programs or modules (such as the power battery capacity correction program, etc.) stored in the memory 71, and calls the data stored in the memory 71 to execute various functions of the electronic device 70 and process data.

[0139] The processor 72 executes the operating system and various installed applications of the electronic device 70. The processor 72 executes the applications to implement the steps in the above-mentioned control method for charging and discharging of the charging station.

[0140] Exemplarily, the computer program may be divided into one or more modules, which are stored in the memory 71 and executed by the processor 72 to complete the present application. The one or more modules may be a series of computer program instruction segments capable of completing specific functions, which are used to describe the execution process of the computer program in the electronic device 70. For example, the computer program may be divided into a power calculation module 101, a power comparison module 102, and a charge and discharge control module 103.

[0141] The above-mentioned integrated unit implemented in the form of a software function module can be stored in a computer-readable storage medium, and the computer-readable storage medium can be non-volatile or volatile. The above-mentioned software function module is stored in a storage medium, including several instructions for enabling a computer device (which can be a personal computer, a computer device, or a network device, etc.) or a processor to perform part of the functions of controlling the charging and discharging of the charging station described in various embodiments of the present application.

[0142] In summary, the control method, system, device and medium for charging and discharging of a charging station disclosed in the present invention can realize the power interaction between the substation and the vehicle end, so as to dynamically adjust the power in the substation in the substation in the area in real time. When the power supply in the substation in the area is insufficient, the charging demand of the vehicle end can be met by increasing the power through the power grid, and the charging demand of other electric vehicles that cannot participate in the discharge or have a lower real-time power can be met by controlling the discharge of electric vehicles that can participate in the discharge and have a higher real-time power. While meeting the car owner's car use needs, it responds to the support needs of the power grid. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0143] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A method for controlling charging and discharging of a charging station, characterized in that: Applied to the charging and discharging management platform, the charging and discharging management platform is connected to the vehicle end, the substation in the area, and the charging pile in communication, and the control method includes: Acquire charging and discharging information of the vehicle end, the charging and discharging information including the upper limit of charging power, the lower limit of discharging power and the real-time power, and calculate and generate the corresponding rigid demand charging total power based on the lower limit of discharging power and the real-time power, the vehicle end including the first vehicle end and the second vehicle end, the first vehicle end is the vehicle end participating in discharging, and the second vehicle end is the vehicle end not participating in discharging; Obtaining the total power supplied by the transformer substation in the substation area, and comparing the total power supplied with the total power of the rigid demand charging; When the total supply power is greater than or equal to the total charging power required, charging the first vehicle end and / or the second vehicle end; When the total supply power is less than the total charging power required, a power increase request is sent to the substation in the area, and / or the first vehicle end is controlled to discharge.

2. The charging and discharging control method of a charging station according to claim 1, characterized in that: The steps of obtaining charging and discharging information of the vehicle end, wherein the charging and discharging information includes an upper limit of charging power, a lower limit of discharging power, and real-time power, and calculating and generating a corresponding rigid demand charging total power based on the lower limit of discharging power and the real-time power, wherein the vehicle end includes a first vehicle end and a second vehicle end, wherein the first vehicle end is a vehicle end participating in discharging, and the second vehicle end is a vehicle end not participating in discharging, include: Obtain the upper limit of charging power, lower limit of discharging power and real-time power of the vehicle; The vehicle end participating in the discharge is represented as a first vehicle end, and the vehicle end not participating in the discharge is represented as a second vehicle end; Calculate the charging power of all the first vehicle terminals whose real-time power is less than the lower limit of the discharge power thereof, and express it as the first charging power; Calculate the charging power of all the second vehicle terminals whose real-time power is less than the upper limit of the charging power, and express it as the second charging power; The first charging power and the second charging power are added together to obtain the just-needed charging total power.

3. The charging and discharging control method of a charging station according to claim 2, characterized in that: When the total supply power is greater than or equal to the total charging power required, the step of charging the first vehicle end and / or the second vehicle end includes: When the total supply power is greater than or equal to the total charging power just required, charging the first vehicle end and the second vehicle end corresponding to the total charging power just required; Calculate the charging power of all first vehicle terminals whose real-time power is less than the upper limit of the charging power and greater than the lower limit of the discharging power, and express it as the total power of other requirements; Determine whether the difference between the total supply power and the total charging power required is greater than the total power required for other purposes; When the difference between the total supply power and the total charging power required is greater than the total power required for other requirements, charging the first vehicle end corresponding to the total power required for other requirements, and sending a power reduction request to the substation in the area; When the difference between the total supply power and the total charging power for rigid demand is less than or equal to the total power for other demands, the first vehicle end corresponding to the total power for other demands is charged in the order of real-time power from small to large.

4. The charging and discharging control method of a charging station according to claim 3, characterized in that: The step of sending a power reduction request to the substation in the area comprises: Calculate the generated power reduction power according to the total supply power, the total rigid charging power and the total other demand power; According to the power reduction power, a power reduction request is sent to the substation.

5. The charging and discharging control method of a charging station according to claim 2, characterized in that: When the total supply power is less than the total charging power required, the step of sending a power increase request to the substation in the area, and / or controlling the second vehicle end to discharge comprises: Calculate the discharge power of all first vehicle terminals whose real-time power is greater than the upper limit of the discharge power, and express it as the total discharge power; Determining whether the difference between the rigid-demand charging total power and the supply total power is greater than the discharge total power; When the difference between the rigid demand charging total power and the supply total power is greater than the discharge total power, a power increase request is sent to the substation in the area, and / or a discharge request is sent to the corresponding first vehicle end; When the difference between the rigidly required total charging power and the supplied total power is less than or equal to the total discharge power, a discharge request is sent to the corresponding first vehicle end.

6. The charging and discharging control method of a charging station according to claim 5, characterized in that: The step of sending a power increase request to the substation in the area comprises: Calculate and generate the power to be increased according to the rigidly required total charging power, the total supply power and the total discharge power; A power increase request is generated according to the power to be increased, and the power increase request is sent to the substation.

7. The charging and discharging control method of a charging station according to claim 5, characterized in that: When the difference between the rigid charging total power and the supply total power is less than or equal to the discharge total power, the step of sending a discharge request to the corresponding first vehicle terminal includes: Calculating the difference between the total charging power required and the total supply power, and expressing it as the power to be discharged; According to the power to be discharged, part of the first vehicle end is selected for discharging.

8. A charging and discharging control system for a charging station, characterized in that: include: A power calculation module is used to obtain the charging and discharging information of the vehicle end, wherein the charging and discharging information includes the upper limit of charging power, the lower limit of discharging power and the real-time power, and calculate and generate the corresponding rigid demand charging total power based on the lower limit of discharging power and the real-time power. The vehicle end includes a first vehicle end and a second vehicle end, wherein the first vehicle end is a vehicle end participating in discharging, and the second vehicle end is a vehicle end not participating in discharging; A power comparison module, used to obtain the total power supplied by the transformer substation in the substation area, and compare the total power supplied with the total power of the rigid demand charging; A charge and discharge control module, configured to charge the first vehicle end and / or the second vehicle end when the total supply power is greater than or equal to the total charging power required; The charging and discharging control module is also used to send a power increase request to the substation in the substation area when the total supply power is less than the total charging power required, and / or control the first vehicle end to discharge.

9. A computer device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and running on the processor, wherein when the processor executes the computer program, the steps of the method for controlling charging and discharging of a charging station as claimed in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for controlling charging and discharging of a charging station as claimed in any one of claims 1 to 7 are implemented.

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