A movable energy storage type charging pile control method and control system

Abstract

The present application relates to mobile energy storage charging pile, specifically relates to a kind of mobile energy storage type charging pile control method and control system, including mobile charging pile and main control cabinet;Mobile charging pile provides mobile charging service to electric vehicle as mobile power supply, while under the control of main control cabinet, supplement power or carry out inverter discharge to power grid, for user load use, realize virtual capacity increase;Main control cabinet is based on preset control strategy or artificial instruction, determines to supplement power to mobile charging pile, or to mobile charging pile stored power inverter discharge to power grid, for user load use;The technical scheme provided by the present application can effectively overcome the defects that the prior art cannot effectively meet the needs of people at any time convenient charging and emergency power supply, and cannot effectively reduce the operating cost of charging operation party.

Description

TECHNICAL FIELD

[0001] The present application relates to mobile energy storage charging piles, in particular to a mobile energy storage charging pile control method and control system. BACKGROUND

[0002] With the rapid development of new energy electric vehicles, people's concerns about the endurance mileage of new energy electric vehicles are also gradually increasing. Keeping a high power has gradually become a daily habit for people driving electric vehicles, which makes the demand for convenient charging and emergency power supply growing. However, in the scene with convenient charging and emergency power supply (such as highway service area, commercial complex parking lot, professional parking lot, etc.), it is often impossible to expand the charging pile due to insufficient capacity, so as to effectively meet the demand for people's daily convenient charging and sudden emergency power supply during holidays, which will affect people's travel to some extent.

[0003] On the other hand, as a charging operator, how to make full use of existing charging facilities to earn more benefits to effectively reduce their operating costs, and help them invest more charging facilities to further meet people's demand for convenient charging and emergency power supply at any time, is also a problem to be solved. SUMMARY

[0004] (I) Technical problems solved

[0005] In view of the above shortcomings of the prior art, the present application provides a mobile energy storage charging pile control method and control system, which can effectively overcome the defects that the prior art cannot effectively meet the demand for people's convenient charging and emergency power supply at any time, and cannot effectively reduce the operating costs of the charging operator.

[0006] (II) Technical solutions

[0007] In order to achieve the above purpose, the present application is realized by the following technical solutions:

[0008] A mobile energy storage charging pile control system, comprising a mobile charging pile and a main control cabinet;

[0009] The mobile charging pile provides mobile charging service to electric vehicles as a mobile power supply, and replenishes power or performs inverter discharge to the power grid under the control of the main control cabinet for user load, realizing virtual capacity expansion;

[0010] The main control cabinet determines to replenish power to the mobile charging pile or to perform inverter discharge of the stored power of the mobile charging pile to the power grid for user load based on the preset control strategy or artificial instruction.

[0011] Preferably, the mobile charging pile comprises a charging master control unit, an energy storage battery pack, a battery management system, a DC-DC conversion module, a DC-DC charging module and a charging gun.

[0012] The charging master control unit receives instructions from the APP platform and battery state information sent by the battery management system, connects the energy storage battery pack and the DC-DC charging module when charging is allowed, provides mobile charging service to the electric vehicle through the charging gun, and communicates with the main control cabinet when the mobile charging pile is connected to the main control cabinet to complete identity recognition and connection object determination.

[0013] The battery management system monitors the state of the energy storage battery pack when the mobile charging pile provides mobile charging service to the electric vehicle, and sends the battery state information to the charging master control unit.

[0014] The DC-DC conversion module converts the stored energy of the energy storage battery pack into 12V power supply to power the charging master control unit, the battery management system and the charging gun.

[0015] Preferably, the DC-DC charging module is connected to the energy storage battery pack through input contactors KM1 and KM2, the DC-DC charging module is connected to the charging gun through output contactors KM3 and KM4, and the charging gun is connected to the energy storage battery pack through inverter discharge contactors KM5 and KM6.

[0016] The DC-DC conversion module is connected to the energy storage battery pack through a micro-break MOX with program-controlled tripping function, and the DC-DC conversion module is connected to the charging master control unit and the battery management system through a power supply line, and is connected to the charging gun through a contactor KM7.

[0017] The charging master control unit is in communication connection with the battery management system.

[0018] Preferably, the mobile charging pile further comprises a handle and a drive-by-wire assist chassis, a sensor for detecting pushing action is installed inside the handle, the charging master control unit receives the detection signal of the sensor, and the drive-by-wire assist chassis is started when the pushing action is detected.

[0019] The drive-by-wire assist chassis is connected to the DC-DC conversion module through a power supply contactor KM8.

[0020] Preferably, the main control cabinet comprises a system master control unit, a vehicle socket, an AC / DC bidirectional charging and discharging module, a load current sensor and a power grid current sensor.

[0021] The system master control unit communicates with the charging master control unit when the charging gun is connected to the vehicle socket to complete identity recognition and connection object determination, and turns on the corresponding AC / DC bidirectional charging and discharging module after successfully identifying the mobile charging pile, and determines to supplement the mobile charging pile with electric energy or to store the electric energy of the mobile charging pile to the power grid for inverter discharging based on the preset control strategy or manual instruction;

[0022] When the system master control unit determines to store the electric energy of the mobile charging pile to the power grid for inverter discharging based on the preset control strategy or manual instruction, the system master control unit controls the working power of the AC / DC bidirectional charging and discharging module according to the detection data of the power grid current sensor, and controls correction in combination with the detection data of the load current sensor.

[0023] Preferably, the AC / DC bidirectional charging and discharging module is connected to the power grid through a corresponding micro-break MOXn and connected to the vehicle socket through a corresponding contactor Kn.

[0024] The system master control unit detects a 12V electrical signal generated when the charging gun is connected to the vehicle socket, and the system master control unit is in communication connection with the charging master control unit.

[0025] A mobile energy storage type charging pile control method, comprising the following steps:

[0026] S1, after the user moves the mobile charging pile to the target charging position, connects the charging gun to the electric vehicle, starts the APP and scans the code;

[0027] S2, the charging master control unit receives the instruction from the APP platform and allows the user to charge, and the charging master control unit controls the input contactor KM1, KM2 and the output contactor KM3, KM4 to be closed, connects the energy storage battery pack with the DC-DC charging module, and charges the electric vehicle through the charging gun;

[0028] S3, when the charging gun is connected to the vehicle socket, the mobile charging pile communicates with the master control cabinet to complete identity recognition and connection object determination;

[0029] S4, after the master control cabinet successfully identifies the mobile charging pile, the system master control unit controls the micro-break MOXn and the contactor Kn of the AC / DC bidirectional charging and discharging module corresponding to the vehicle socket to be closed to connect the AC / DC bidirectional charging and discharging module, and judges the mode based on the preset control strategy or manual instruction;

[0030] S5, when the system control unit to mobile charging pile storage power to the grid inverter discharge, through the communication bus CAN1 to the charging control unit to send the corresponding control message, the charging control unit control input contactor KM1, KM2 and output contactor KM3, KM4 disconnect, and then control the inverter discharge contactor KM5, KM6 closed, so that the system works in the inverter discharge state, to realize the storage inverter and virtual capacity;

[0031] S6, when the system control unit determines to supplement the mobile charging pile power, through the communication bus CAN1 to the charging control unit to send the corresponding control message, the charging control unit control inverter discharge contactor KM5, KM6 disconnect, and then control the input contactor KM1, KM2 and output contactor KM3, KM4 closed, so that the system is in the state of supplementing the power to supplement the energy storage battery pack.

[0032] Preferably, in S2, the charging control unit receives instructions from the APP platform and allows users to charge, the charging control unit control input contactor KM1, KM2 and output contactor KM3, KM4 closed, the energy storage battery pack and DC-DC charging module, through the charging gun to electric vehicle charging, including:

[0033] The charging control unit controls the power supply contactor KM8 to disconnect before allowing users to charge, so that the mobile charging pile is in a state of not being movable during charging;

[0034] The charging control unit receives the battery state information monitored and sent by the battery management system to the energy storage battery pack through the communication bus CAN2 during charging, and if the energy storage battery pack is insufficient or has a fault, the charging control unit controls the input contactor KM1, KM2 and output contactor KM3, KM4 to disconnect to stop charging.

[0035] Preferably, in S3, when the charging gun is connected to the vehicle socket, the mobile charging pile communicates with the main control cabinet to complete the identity recognition and connection object determination, including:

[0036] When the charging gun is connected to the vehicle socket, the charging control unit controls the contactor KM7 to close after self-checking, and provides a 12V electrical signal to the system control unit through the charging gun;

[0037] The system control unit detects the 12V electrical signal from the vehicle socket through the detection line, and sends an identity recognition message to the charging control unit through the communication bus CAN1 to confirm that the mobile charging pile is correctly connected, and at the same time informs the mobile charging pile that it is connected to the main control cabinet, completing the identity recognition and connection object determination.

[0038] Preferably, in S5, when the system control unit to mobile charging pile storage power to the grid inverter discharge, including:

[0039] The system master control unit controls the working power of the AC / DC bidirectional charging and discharging module according to the detection data of the grid current sensor, and controls and corrects in combination with the detection data of the load current sensor.

[0040] (Three) beneficial effects

[0041] Compared with the prior art, the mobile energy storage type charging pile control method and control system provided by the application specifically provides a P2G / P2L mobile energy storage type charging pile, a mobile energy storage type charging pile control system containing the charging pile and having the functions of providing mobile charging service and inverting and discharging to the power grid, and a corresponding control method, which can effectively meet the daily convenient charging and sudden emergency power supplement demand during holidays, and at the same time, combined with the peak-valley electricity price, a preset control strategy for supplementing electric energy and inverting and discharging is formulated, peak load shifting charging and energy storage power selling can be realized, so as to effectively reduce the operation cost of the charging operator. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0043] Figure 1 For the circuit connection schematic diagram of the mobile charging pile in the present application;

[0044] Figure 2 For the circuit connection schematic diagram of the main control cabinet in the present application;

[0045] Figure 3 For the flowchart of the present application. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0047] A mobile energy storage type charging pile control system, as shown in Figure 1 and Figure 2 , comprises a mobile charging pile and a main control cabinet;

[0048] The mobile charging pile provides mobile charging service for electric vehicles as a mobile power supply, and replenishes electric energy under the control of the main control cabinet or performs inverter discharge to the power grid for user load, thereby realizing virtual capacity expansion.

[0049] The main control cabinet determines whether to replenish electric energy to the mobile charging pile or perform inverter discharge to the power grid for user load based on a preset control strategy or manual instruction.

[0050] The mobile charging pile (as shown in Figure 1

[0051] 1) The mobile charging pile comprises a charging main control unit 40, an energy storage battery pack 10, a battery management system 20, a DC-DC conversion module 30, a DC-DC charging module 50 and a charging gun 60.

[0052] The charging main control unit 40 receives instructions from an APP platform and battery state information sent by the battery management system 20, connects the energy storage battery pack 10 with the DC-DC charging module 50 when charging is allowed, provides mobile charging service for electric vehicles through the charging gun 60, and communicates with the main control cabinet to complete identity recognition and connection object determination when the mobile charging pile is connected to the main control cabinet.

[0053] The battery management system 20 monitors the state of the energy storage battery pack 10 when the mobile charging pile provides mobile charging service for electric vehicles, and sends battery state information to the charging main control unit 40.

[0054] The DC-DC conversion module 30 converts the stored electric energy of the energy storage battery pack 10 into 12V power supply, and supplies power to the charging main control unit 40, the battery management system 20 and the charging gun 60.

[0055] The DC-DC charging module 50 is connected to the energy storage battery pack 10 through input contactors KM1 and KM2, the DC-DC charging module 50 is connected to the charging gun 60 through output contactors KM3 and KM4, and the charging gun 60 is connected to the energy storage battery pack 10 through inverter discharge contactors KM5 and KM6.

[0056] The DC-DC conversion module 30 is connected to the energy storage battery pack 10 through a micro-break MOX with program-controlled tripping function, and the DC-DC conversion module 30 supplies power to the charging main control unit 40 and the battery management system 20 through a power line, and connects the charging gun 60 through a contactor KM7.

[0057] The charging main control unit 40 is in communication connection with the battery management system 20.

[0058] ​The initial state of the mobile charging pile is that the DC-DC conversion module 30 accesses the energy storage battery pack 10 through the micro-break MOX with program-controlled tripping function, converts the stored energy of the energy storage battery pack 10 into 12V power supply, and supplies power to the charging master control unit 40, the battery management system 20 and the charging gun 60, so that the charging master control unit 40 is in standby state and can be used by the user at any time.

[0059] 2) The mobile charging pile further comprises a handle 70 and a drive-by-wire assist chassis 80, the handle 70 is internally provided with a sensor for detecting a pushing action, and the charging master control unit 40 receives a detection signal of the sensor and starts the drive-by-wire assist chassis 80 when the pushing action is detected;

[0060] The drive-by-wire assist chassis 80 accesses the DC-DC conversion module 30 through the power supply contactor KM8.

[0061] The above technical scheme, when the user uses the mobile charging pile, holds the handle 70 and slightly pushes, the charging master control unit 40 receives the detection signal of the sensor built-in the handle 70, and starts the drive-by-wire assist chassis 80, so that the user only needs to slightly push to move the mobile charging pile to the target charging position.

[0062] The main control cabinet (such as shown in Figure 2 )

[0063] The main control cabinet comprises a system master control unit 130, a vehicle socket 90, an AC / DC bidirectional charging and discharging module 100, a load current sensor 110 and a power grid current sensor 120;

[0064] The system master control unit 130 communicates with the charging master control unit 40 when the charging gun 60 is connected to the vehicle socket 90 to complete identity recognition and determination of the connected object, and turns on the corresponding AC / DC bidirectional charging and discharging module 100 after successfully recognizing the mobile charging pile, and determines to supplement the electric energy to the mobile charging pile or to perform inverter discharging of the stored electric energy of the mobile charging pile to the power grid based on the preset control strategy or manual instruction;

[0065] When the system master control unit 130 determines to perform inverter discharging of the stored electric energy of the mobile charging pile to the power grid based on the preset control strategy or manual instruction, the system master control unit 130 controls the working power of the AC / DC bidirectional charging and discharging module 100 according to the detection data of the power grid current sensor 120, and controls correction in combination with the detection data of the load current sensor 110.

[0066] The AC / DC bidirectional charging and discharging module 100 is connected to the power grid through the corresponding micro-break MOXn and connected to the vehicle socket 90 through the corresponding contactor Kn;

[0067] The system master control unit 130 detects the 12V electrical signal generated when the charging gun 60 is connected to the vehicle socket 90, and the system master control unit 130 is in communication connection with the charging master control unit 40.

[0068] A movable energy storage type charging pile control method, as shown in the figure, comprises the following steps: Figure 3

[0069] After the user moves the mobile charging pile to the target charging position, connects the charging gun 60 to the electric vehicle, starts the APP and scans the code;

[0070] The charging master control unit 40 receives instructions from the APP platform and allows the user to charge, and the charging master control unit 40 controls the input contactor KM1, KM2 and the output contactor KM3, KM4 to close, connects the energy storage battery pack 10 with the DC-DC charging module 50, and charges the electric vehicle through the charging gun 60;

[0071] When the charging gun 60 is connected to the vehicle socket 90, the mobile charging pile communicates with the main control cabinet to complete the identity recognition and the determination of the connection object;

[0072] After the main control cabinet successfully identifies the mobile charging pile, the system master control unit 130 controls the micro-break MOXn and the contactor Kn of the AC / DC bidirectional charging and discharging module 100 corresponding to the vehicle socket 90 to close, to connect the AC / DC bidirectional charging and discharging module 100, and judges the mode based on the preset control strategy or manual instruction;

[0073] When the system master control unit 130 inverts and discharges the stored energy of the mobile charging pile to the power grid, it sends corresponding control messages to the charging master control unit 40 through the communication bus CAN1, the charging master control unit 40 controls the input contactor KM1, KM2 and the output contactor KM3, KM4 to open, and then controls the inverter discharge contactor KM5, KM6 to close, so that the system works in the inverter discharge state, to realize energy storage inversion and virtual capacity expansion;

[0074] When the system master control unit 130 determines to supplement the energy of the mobile charging pile, it sends corresponding control messages to the charging master control unit 40 through the communication bus CAN1, the charging master control unit 40 controls the inverter discharge contactor KM5, KM6 to open, and then controls the input contactor KM1, KM2 and the output contactor KM3, KM4 to close, so that the system is in the state of supplementing the energy, to supplement the energy of the energy storage battery pack 10.

[0075] ​1) The charging master control unit 40 receives instructions from the APP platform and allows the user to charge. The charging master control unit 40 controls the closing of the input contactors KM1, KM2 and the output contactors KM3, KM4, connects the energy storage battery pack 10 with the DC-DC charging module 50, and charges the electric vehicle through the charging gun 60, including:

[0076] The charging master control unit 40 controls the power supply contactor KM8 to be opened before allowing the user to charge, so that the mobile charging pile is in a non-movable state during the charging process;

[0077] The charging master control unit 40 receives the battery state information monitored and sent by the battery management system 20 to the energy storage battery pack 10 through the communication bus CAN2 during the charging process. If the energy storage battery pack 10 is insufficient or has a fault, the charging master control unit 40 controls the input contactors KM1, KM2 and the output contactors KM3, KM4 to be opened to stop charging, so as to avoid causing the energy storage battery pack 10 to be insufficient or to have a fault.

[0078] 2) When the charging gun 60 is connected to the vehicle socket 90, the mobile charging pile communicates with the main control cabinet to complete the identity recognition and connection object determination, including:

[0079] When the charging gun 60 is connected to the vehicle socket 90, the charging master control unit 40 controls the contactor KM7 to be closed after self-checking is completed, and provides a 12V electrical signal to the system master control unit 130 through the charging gun 60;

[0080] The system master control unit 130 detects the 12V electrical signal from the vehicle socket 90 through the detection line, and sends an identity recognition message to the charging master control unit 40 through the communication bus CAN1 to confirm that the mobile charging pile is correctly connected, and at the same time informs the mobile charging pile that it is connected to the main control cabinet, completes the identity recognition and connection object determination, and can avoid the mobile charging pile from malfunctioning, thereby preventing charging accidents from occurring.

[0081] 3) When the system master control unit 130 inverts and discharges the stored energy of the mobile charging pile to the power grid, including:

[0082] The system master control unit 130 controls the working power of the AC / DC bidirectional charging and discharging module 100 according to the detection data of the power grid current sensor 120, and controls correction in combination with the detection data of the load current sensor 110.

[0083] The technical scheme has the advantages that when the current detected by the power grid current sensor 120 is negative, it indicates that the user load is small or is becoming smaller, at this time, the system master control unit 130 controls the working power of the AC / DC bidirectional charging and discharging module 100 to adapt to the actual power demand of the user load, and controls and corrects in combination with the detection data of the load current sensor 110, to avoid that the working power of the AC / DC bidirectional charging and discharging module 100 is too large to cause that the user load cannot be completely consumed, and to prevent power waste.

[0084] In the technical scheme, the charging operator can formulate preset control strategies for supplementing electric energy and inverting and discharging according to the electricity price in different time periods, can realize peak shaving and valley filling charging and energy storage power selling, and thus effectively reduces the operation cost of the charging operator, and enables the charging operator to invest more charging facilities to further meet the needs of people for charging at any time and conveniently and emergency power supplement.

[0085] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A control method for a portable energy storage charging pile, characterized in that: The mobile charging station includes a charging main control unit (40), an energy storage battery pack (10), a battery management system (20), a DC-DC conversion module (30), a DC-DC charging module (50), and a charging gun (60). The main control cabinet includes a system main control unit (130), a vehicle socket (90), an AC / DC bidirectional charging and discharging module (100), a load current sensor (110), and a grid current sensor (120). Specifically, the following steps are included: S1. After the user moves the mobile charging station to the target charging location, connects the charging gun (60) to the electric vehicle, starts the APP and scans the code; S2. The charging main control unit (40) receives instructions from the APP platform and allows users to charge. The charging main control unit (40) controls the input contactors KM1, KM2 and output contactors KM3, KM4 to close, connecting the energy storage battery pack (10) with the DC-DC charging module (50), and charging the electric vehicle through the charging gun (60). S3. When the charging gun (60) is connected to the vehicle socket (90), the mobile charging pile communicates with the main control cabinet to complete the identification and determination of the connected object. S4. After the main control cabinet successfully identifies the mobile charging pile, the system main control unit (130) controls the micro-circuit MOXn and contactor Kn of the AC / DC bidirectional charging and discharging module (100) corresponding to the vehicle socket (90) to close, so as to connect the AC / DC bidirectional charging and discharging module (100) and make mode judgment based on the preset control strategy or manual command. S5. When the system main control unit (130) performs inverter discharge of the stored energy of the mobile charging pile to the grid, it sends a corresponding control message to the charging main control unit (40) through the communication bus CAN1. The charging main control unit (40) controls the input contactors KM1 and KM2 and the output contactors KM3 and KM4 to open, and then controls the inverter discharge contactors KM5 and KM6 to close, so that the system works in the inverter discharge state to realize energy storage inverter and virtual capacity expansion. S6. When the system main control unit (130) determines to replenish the mobile charging pile with power, it sends the corresponding control message to the charging main control unit (40) through the communication bus CAN1. The charging main control unit (40) controls the inverter discharge contactors KM5 and KM6 to open, and then controls the input contactors KM1 and KM2 and the output contactors KM3 and KM4 to close, so that the system is in the state of replenishing power to replenish the energy storage battery pack (10).

2. The control method for a mobile energy storage charging pile according to claim 1, characterized in that: In S2, the charging main control unit (40) receives instructions from the APP platform and allows users to charge. The charging main control unit (40) controls the input contactors KM1 and KM2 and the output contactors KM3 and KM4 to close, connecting the energy storage battery pack (10) to the DC-DC charging module (50), and charging the electric vehicle through the charging gun (60), including: Before allowing users to charge, the charging main control unit (40) first controls the power supply contactor KM8 to disconnect, so that the mobile charging pile is immovable during the charging process; During the charging process, the charging control unit (40) receives battery status information from the battery management system (20) through the communication bus CAN2, which monitors and sends the energy storage battery pack (10). If the energy storage battery pack (10) has insufficient power or a fault, the charging control unit (40) controls the input contactors KM1 and KM2 and the output contactors KM3 and KM4 to disconnect in order to stop charging.

3. The control method for a mobile energy storage charging pile according to claim 1, characterized in that: In S3, when the charging gun (60) is connected to the vehicle socket (90), the mobile charging pile communicates with the main control cabinet to complete identity recognition and determination of the connected object, including: When the charging gun (60) is connected to the vehicle socket (90), the charging main control unit (40) controls the contactor KM7 to close after the self-test is completed, and provides a 12V electrical signal to the system main control unit (130) through the charging gun (60); The system main control unit (130) detects the 12V electrical signal from the vehicle socket (90) through the detection line, and sends an identification message to the charging main control unit (40) through the communication bus CAN1 to confirm that the mobile charging pile is correctly connected. At the same time, it notifies the mobile charging pile that it is connected to the main control cabinet, thus completing the identification and determination of the connection object.

4. The control method for a mobile energy storage charging pile according to claim 3, characterized in that: In S5, when the system main control unit (130) performs inverter discharge of the stored energy from the mobile charging pile to the grid, it includes: The system main control unit (130) controls the working power of the AC / DC bidirectional charging and discharging module (100) based on the detection data of the grid current sensor (120), and performs control correction in conjunction with the detection data of the load current sensor (110).

5. A control system for a mobile energy storage charging pile, used to execute the control method for a mobile energy storage charging pile as described in claim 1, characterized in that: Includes mobile charging stations and main control cabinet; Mobile charging piles serve as mobile power sources to provide mobile charging services to electric vehicles. At the same time, under the control of the main control cabinet, they can replenish electrical energy or perform inverter discharge to the power grid for use by user loads, thus realizing virtual capacity expansion. The main control cabinet, based on preset control strategies or manual instructions, determines whether to replenish the power to the mobile charging pile or to invert and discharge the stored power from the mobile charging pile to the power grid for use by the user's load.

6. The mobile energy storage charging pile control system according to claim 5, characterized in that: The charging main control unit (40) receives instructions from the APP platform and battery status information sent by the battery management system (20). When charging is allowed, it connects the energy storage battery pack (10) to the DC-DC charging module (50), provides mobile charging services to electric vehicles through the charging gun (60), and communicates with the main control cabinet when the mobile charging pile is connected to the main control cabinet to complete identity recognition and determination of the connected object. The battery management system (20) monitors the status of the energy storage battery pack (10) when the mobile charging pile provides mobile charging services to the electric vehicle and sends the battery status information to the charging master control unit (40). The DC-DC converter module (30) converts the electrical energy stored in the energy storage battery pack (10) into 12V power to supply power to the charging main control unit (40), the battery management system (20) and the charging gun (60).

7. The mobile energy storage charging pile control system according to claim 6, characterized in that: The DC-DC charging module (50) is connected to the energy storage battery pack (10) through input contactors KM1 and KM2. The DC-DC charging module (50) is connected to the charging gun (60) through output contactors KM3 and KM4. The charging gun (60) is connected to the energy storage battery pack (10) through inverter discharge contactors KM5 and KM6. The DC-DC conversion module (30) is connected to the energy storage battery pack (10) through a micro-circuit MOX with programmable trip function. The DC-DC conversion module (30) supplies power to the charging main control unit (40) and the battery management system (20) through the power line, and is connected to the charging gun (60) through the contactor KM7. The charging main control unit (40) is communicatively connected to the battery management system (20).

8. The mobile energy storage charging pile control system according to claim 7, characterized in that: The mobile charging station also includes a handle (70) and a wire-controlled power-assisted chassis (80). The handle (70) is equipped with a sensor for detecting pushing action. The charging main control unit (40) receives the detection signal from the sensor and activates the wire-controlled power-assisted chassis (80) when pushing action is detected. The drive-by-wire chassis (80) is connected to the DC-DC converter module (30) via a power supply contactor KM8.

9. The mobile energy storage charging pile control system according to claim 8, characterized in that: The system main control unit (130) communicates with the charging main control unit (40) when the charging gun (60) is connected to the vehicle socket (90) to complete the identification and determination of the connected object. After successfully identifying the mobile charging pile, it connects the corresponding AC / DC bidirectional charging and discharging module (100). At the same time, based on the preset control strategy or manual instructions, it determines to replenish the mobile charging pile with power or to invert and discharge the stored power of the mobile charging pile to the grid. The system main control unit (130) determines, based on a preset control strategy or manual instruction, when the stored energy of the mobile charging pile is discharged to the grid via inverter, the system main control unit (130) controls the working power of the AC / DC bidirectional charging and discharging module (100) according to the detection data of the grid current sensor (120), and performs control correction in combination with the detection data of the load current sensor (110).

10. The mobile energy storage charging pile control system according to claim 9, characterized in that: The AC / DC bidirectional charging and discharging module (100) is connected to the power grid through a corresponding miniature circuit breaker MOXn and to the vehicle socket (90) through a corresponding contactor Kn. The system main control unit (130) detects the 12V electrical signal generated when the charging gun (60) is connected to the vehicle socket (90) via the detection line. The system main control unit (130) is communicatively connected to the charging main control unit (40).

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