Charging device with photovoltaic energy storage

Abstract

The utility model discloses a charging device with a photovoltaic energy storage function, which solves the problems that the charging device in the prior art depends too much on power supply of a power grid and is low in safety performance and super-intelligent remote control reliability, and comprises an energy storage unit, a photovoltaic unit and a charging unit of which ports are electrically connected with each other, the energy storage unit comprises a storage battery pack BP1, and the storage battery pack BP1 is connected with a protection electric appliance FU1 in series. The photovoltaic unit comprises a photovoltaic module PV2, and the photovoltaic module PV2 is connected in series with a protection electric appliance FU2; the charging unit comprises a charging gun and a protection electric appliance FU3 which are connected in series. According to the utility model, the dependence on power supply of a power grid is reduced, and the safety performance of the charging device and the reliability of super-intelligent remote control are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging, and particularly provides a charging device with photovoltaic energy storage. Background Art

[0002] At present, with the increasing number of new energy vehicles, although the charging infrastructure is continuously built, the following charging problems still exist: in the high-speed service area, the charging facilities are not enough during the peak period, and the charging facilities are not fully utilized during the off-peak period. If too many charging devices are invested, it will cause waste; in the old residential areas, the parking spaces are tight and the power distribution capacity increase is difficult, resulting in charging difficulties; in special scenarios, it is difficult to replenish the power of new energy vehicles emergently. Therefore, a mobile charging device is needed.

[0003] The existing mobile charging device stores the electric energy obtained from the power grid through a storage and charging device, and then charges external devices, relying too much on the power grid for power replenishment; in addition, the existing charging device has a low safety performance, does not set enough protection measures, may cause damage or danger in abnormal situations, and the control system is imperfect, and the interactive data is not comprehensive enough, resulting in low reliability of ultra-intelligent remote control. Summary of the Utility Model

[0004] In order to solve the problems that the charging device in the prior art relies too much on the power grid for power replenishment and has low safety performance and low reliability of ultra-intelligent remote control, the utility model provides a charging device with photovoltaic energy storage, which has a photovoltaic power replenishment function, can effectively utilize solar energy to replenish the energy storage, reduces the dependence on the power grid for power replenishment, and also sets a plurality of protection electrical appliances and an intelligent control module, improving the safety performance of the charging device and the reliability of ultra-intelligent remote control.

[0005] The specific scheme of the utility model is as follows.

[0006] A charging device with photovoltaic energy storage includes an energy storage unit, a photovoltaic unit and a charging unit with electrically connected ports; the energy storage unit includes a battery pack BP1, and the battery pack BP1 is connected in series with a protection electrical appliance FU1; the photovoltaic unit includes a photovoltaic module PV2, and the photovoltaic module PV2 is connected in series with a protection electrical appliance FU2; the charging unit includes a charging gun and a protection electrical appliance FU3 connected in series.

[0007] A charging device with photovoltaic energy storage of the present utility model is provided with a photovoltaic unit. The photovoltaic unit converts solar energy into electric energy through a photovoltaic component PV2. The photovoltaic unit is connected to an energy storage unit and transmits the converted electric energy to the energy storage unit for supplementary charging, effectively utilizing solar energy, improving the electricity cleanliness rate, and reducing the dependence on grid supplementary charging. The charging unit is connected to the energy storage unit, and the electric energy stored in the energy storage unit is transmitted to an electric vehicle through a charging gun to achieve new energy charging. The charging device with photovoltaic energy storage of the present utility model is also provided with a plurality of protective electrical appliances, improving the safety performance of the charging device and avoiding potential dangers or damages that may occur under abnormal conditions.

[0008] Preferably, the energy storage unit further includes a DC contactor KM1. A protective electrical appliance FU1 and a DC shunt FL1 are sequentially connected in series between the battery pack BP1 and the DC contactor KM1. The BMS module M1 respectively establishes communication connections with the battery pack BP1, the DC shunt FL1, and the DC contactor KM1.

[0009] The energy storage unit transmits the electric energy stored therein to a new energy vehicle for charging according to the scheduling instruction of the energy management unit, and can also perform self-supplementary charging and storage of the electric energy of the photovoltaic unit. The BMS module M1 collects the position and fault signals of the protective electrical appliance FU1, communicates and exchanges data with the battery pack BP1, and realizes the protection of the battery pack BP1.

[0010] Preferably, the photovoltaic unit further includes a DC converter module DC / DC2 and an intelligent control module M2. The protective electrical appliance FU2 is connected in series between the photovoltaic component PV2 and the DC converter module DC / DC2. The intelligent control module M2 establishes a communication connection with the DC converter module DC / DC2.

[0011] The photovoltaic unit converts solar energy into direct current and transmits the direct current to the energy storage unit for supplementary charging through the DC converter module DC / DC2. The intelligent control module M2 collects the position and fault signals of the protective electrical appliance FU2, communicates and exchanges data with the DC converter module DC / DC2, and realizes the acquisition and remote control processing of photovoltaic electric energy data.

[0012] Preferably, the charging unit further includes a DC converter module DC / DC3 and an intelligent control module M3. A protective electrical appliance FU3, a DC shunt FL3, and a DC contactor KM3 are sequentially connected in series between the DC converter module DC / DC3 and the charging gun. The DC shunt FL3 is connected to a metering module PJ3. The intelligent control module M3 respectively establishes communication connections with the DC converter module DC / DC3, the metering module PJ3, the DC contactor KM3, and the charging gun.

[0013] The charging unit transmits the electric energy of the energy storage unit to the electric vehicle through the DC / DC converter module DC / DC3 and the charging gun to achieve the charging of new energy vehicles. The intelligent control module M3 collects the position and fault signals of the protection electrical appliance FU3, communicates and exchanges data with the metering module PJ3, the DC / DC converter module DC / DC3 and the vehicle's BMS, and realizes the acquisition and remote control processing of the charging electric energy data and the vehicle-end BMS data.

[0014] Preferably, the charging device with photovoltaic energy storage further includes an AC unit, and the AC unit includes an aviation plug XZ and a charging rectification module AC / DC4; behind the aviation plug XZ, an AC protection electrical appliance Q1, a surge protection electrical appliance Q2 and a surge protector SPD are connected in series in sequence, and the surge protector SPD is grounded;

[0015] The AC unit further includes a current transformer CT and a metering module PJ4. The current transformer CT is connected in parallel between the AC protection electrical appliance Q1 and the surge protection electrical appliance Q2. The charging rectification module AC / DC4 is connected to the current transformer CT. The metering module PJ4 is connected in series with a resistor and then connected in parallel with the current transformer CT;

[0016] The AC unit further includes an intelligent control module M4. The intelligent control module M4 establishes communication connections with the charging rectification module AC / DC4, the metering module PJ4 and the AC protection electrical appliance Q1 respectively.

[0017] The AC unit enables the mains AC to transmit the electric energy to the charging rectification module AC / DC4 through the protection electrical appliance. The charging rectification module AC / DC4 rectifies the AC into DC power to supply the energy storage unit to charge the battery pack BP1. That is, the energy storage unit can charge and store the electric energy of the AC unit by itself. The intelligent control module M4 collects the position and fault signals of the protection electrical appliance, communicates and exchanges data with the metering module PJ4 and the charging rectification module AC / DC4, and realizes the acquisition and remote control processing of the AC-side electric energy data.

[0018] Preferably, it further includes a mobile chassis unit, which includes a DC / DC converter module DC / DC5 and a driver. A battery pack BP2 is connected in series between the DC / DC converter module DC / DC5 and the driver. The DC / DC converter module DC / DC5 is connected in series with a switch K5;

[0019] The mobile chassis unit further includes an intelligent control module M5. The intelligent control module M5 establishes communication connections with the DC / DC converter module DC / DC5, the driver and the battery pack BP2 respectively.

[0020] Preferably, the driver includes a chassis frame, driving wheels and multiple sensors. The sensors include radar, camera and GPS.

[0021] The mobile chassis unit transports the entire charging device to a designated location according to the instructions of the energy management unit. It has navigation and obstacle avoidance and trajectory planning algorithms to achieve driverless operation within the site. The intelligent control module M5 collects the position and fault signals of key devices in the mobile chassis unit and manages the energy of its own battery pack BP2 at the same time.

[0022] Preferably, it further includes an energy management unit, and the energy management unit includes a DC / DC converter module DC / DC6 and an energy management controller EMS, and the DC / DC converter module DC / DC6 is connected in series with the energy management controller EMS.

[0023] Preferably, the DC contactor KM1, the DC / DC converter module DC / DC2, the DC / DC converter module DC / DC3, the charging rectifier module AC / DC4, the switch K5, and the DC / DC converter module DC / DC6 are electrically connected to each other, that is, the energy storage unit, the photovoltaic unit, the charging unit, the AC unit, the mobile chassis unit, and the energy management unit are interconnected.

[0024] Preferably, the energy management controller EMS establishes communication connections with the intelligent control module M2 and the intelligent control module M4 through the RS-485 interface respectively, and the energy management controller EMS establishes communication connections with the BMS module M1, the intelligent control module M2, and the intelligent control module M5 through the CAN bus respectively.

[0025] The BMS module M1 and the intelligent control modules M2, M3, M4, and M5 collect the data of their own units and upload the data to the energy management controller EMS; the energy management unit realizes data interaction with the BMS module M1 and the intelligent control modules M2, M3, M4, and M5 through the energy management controller EMS, manages each unit, coordinates the data of each unit, realizes tele-signaling, telemetry, and remote control of the whole machine system, and improves the reliability of ultra-intelligent remote control.

[0026] The energy management unit manages the AC unit, the charging unit, the energy storage unit, the mobile chassis unit, and the photovoltaic unit, coordinates the data of each unit, realizes tele-signaling, telemetry, and remote control of the whole machine system, and improves the reliability of ultra-intelligent remote control.

[0027] Therefore, the utility model has the following beneficial effects:

[0028] (1) It has a photovoltaic power supply replenishment function. In open-air places, it can effectively utilize solar energy to replenish the energy storage, improve the power consumption cleanliness rate, and reduce the dependence on grid power replenishment;

[0029] (2) Multiple protective electrical appliances and intelligent control modules are provided, which improves the safety performance of the charging device, makes the interactive data more comprehensive, and improves the reliability of ultra-intelligent remote control;

[0030] (3) A mobile chassis unit is provided, and mobile charging is achieved through the control of the energy management unit, effectively avoiding the situation where the vehicle cannot drive away in time after being fully charged, and improving the utilization efficiency of charging resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the provided drawings.

[0032] Figure 1 It is a circuit block diagram of a charging device with photovoltaic energy storage according to the present invention.

[0033] In the figure: 1, energy storage unit; 2, photovoltaic unit; 3, charging unit; 4, AC unit; 5, mobile chassis unit; 6, energy management unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0035] As Figure 1 shown, it is a circuit block diagram of a charging device with photovoltaic energy storage according to the present invention. The charging device with photovoltaic energy storage includes an energy storage unit 1, a photovoltaic unit 2, a charging unit 3, an AC unit 4, a mobile chassis unit 5, and an energy management unit 6, and the six units are interconnected.

[0036] The energy storage unit 1 includes a battery pack BP1, a BMS module M1, a DC contactor KM1, a protective electrical appliance FU1, and a DC shunt FL1; among them, the battery pack BP1, the protective electrical appliance FU1, the DC shunt FL1, and the DC contactor KM1 are connected in series in sequence, and the other end of the DC contactor KM1 is the port for the energy storage unit 1 to connect to each unit. The BMS module M1 establishes communication connections with the battery pack BP1, the DC shunt FL1, and the DC contactor KM1 respectively.

[0037] The photovoltaic unit 2 includes a photovoltaic module PV2, a protective electrical appliance FU2, a DC / DC converter module DC / DC2, and an intelligent control module M2. Among them, the photovoltaic module PV2, the protective electrical appliance FU2, and the DC / DC converter module DC / DC2 are connected in series in sequence. The other end of the DC / DC converter module DC / DC2 is the port for the connection of the photovoltaic unit 2 to each unit, and the intelligent control module M2 establishes a communication connection with the DC / DC converter module DC / DC2.

[0038] The charging unit 3 includes a DC / DC converter module DC / DC3, a protective electrical appliance FU3, a DC shunt FL3, a metering module PJ3, a DC contactor KM3, a charging gun, and an intelligent control module M3. Among them, the DC / DC converter module DC / DC3, the protective electrical appliance FU3, the DC shunt FL3, the DC contactor KM3, and the charging gun are connected in series in sequence. The DC shunt FL3 is also connected to the metering module PJ3. The other end of the DC / DC converter module DC / DC3 is the port for the connection of the charging unit 3 to each unit, and the intelligent control module M3 establishes communication connections with the DC / DC converter module DC / DC3, the metering module PJ3, the DC contactor KM3, and the charging gun respectively.

[0039] The AC unit 4 includes an aviation plug XZ, an AC protective electrical appliance Q1, a surge protective electrical appliance Q2, a surge protector SPD, a charging rectifier module AC / DC4, a current transformer CT, a metering module PJ4, and an intelligent control module M4. After the aviation plug XZ, the AC protective electrical appliance Q1, the surge protective electrical appliance Q2, and the surge protector SPD are connected in series in sequence, and the surge protector SPD is grounded. The current transformer CT is connected in parallel between the AC protective electrical appliance Q1 and the surge protective electrical appliance Q2. One end of the charging rectifier module AC / DC4 is connected to the current transformer CT, and the other end of the charging rectifier module AC / DC4 is the port for the connection of the AC unit 4 to each unit. The metering module PJ4 is connected in series with a resistor and then connected in parallel with the current transformer CT. The intelligent control module M4 establishes communication connections with the charging rectifier module AC / DC4, the metering module PJ4, and the AC protective electrical appliance Q1 respectively.

[0040] The mobile chassis unit 5 includes a DC / DC converter module DC / DC5, a battery pack BP2, a switch K5, a driver, and an intelligent control module M5. Among them, the DC / DC converter module DC / DC5, the battery pack BP2, and the driver are connected in series in sequence. The other end of the DC / DC converter module DC / DC5 is connected in series with the switch K5, and the other end of the switch K5 is the port for the connection of the mobile chassis unit 5 to each unit. The intelligent control module M5 establishes communication connections with the DC / DC converter module DC / DC5, the driver, and the battery pack BP2 respectively. The driver includes a chassis frame, driving wheels, and multiple sensors. The sensors include radar, cameras, GPS, etc.

[0041] The energy management unit 6 includes a DC / DC converter module DC / DC6 and an energy management controller EMS. The DC / DC converter module DC / DC6 is connected in series with the energy management controller EMS. The other end of the DC / DC converter module DC / DC6 is the port for the energy management unit 6 to connect to each unit.

[0042] Among the six units of the energy storage unit 1, the photovoltaic unit 2, the charging unit 3, the AC unit 4, the mobile chassis unit 5, and the energy management unit 6, the DC contactor KM1, the DC / DC converter modules DC / DC2 and DC / DC3, the charging rectifier module AC / DC4, the switch K5, and the DC / DC converter module DC / DC6 are electrically connected to each other, that is, the six units are interconnected.

[0043] The energy management controller EMS establishes communication connections with the intelligent control module M2 and the intelligent control module M4 through the RS-485 interface for two-way data transmission. Moreover, the energy management controller EMS establishes communication connections with the BMS module M1, the intelligent control module M2, and the intelligent control module M5 through the CAN bus for two-way data transmission.

[0044] In a preferred embodiment, the charging device with photovoltaic energy storage is connected to the cloud platform unit. The energy management controller EMS and the cloud platform unit perform two-way data transmission through the 4G network. The cloud platform unit is connected to the terminal unit through the 4G network and performs two-way data transmission with the terminal unit.

[0045] The cloud platform unit can adopt a conventional charging platform for charging order management; the terminal unit can adopt a mobile phone APP or a small program, etc.; the cloud platform unit also accepts the charging order processing of the terminal unit at the same time.

[0046] Combined with the above circuit structure, the working principle of the charging device with photovoltaic energy storage is as follows.

[0047] The energy storage unit 1 transmits the electric energy stored in it to charge the new energy vehicle according to the scheduling instructions of the energy management unit 6, and can also perform self-charging storage on the electric energy of the photovoltaic unit 2. The BMS module M1 collects the position and fault signals of the protective electrical appliance FU1, communicates and exchanges data with the battery pack BP1, realizes the protection of the battery pack BP1, and uploads the data to the energy management controller EMS in the energy management unit 6.

[0048] The photovoltaic unit 2 converts solar energy into direct current and transmits the direct current to the energy storage unit 1 for supplementary charging through the DC / DC converter module DC / DC2. The intelligent control module M2 collects the position and fault signals of the protective electrical appliance FU2, communicates and exchanges data with the DC / DC converter module DC / DC2, realizes the acquisition and remote control processing of photovoltaic electric energy data, and uploads the data to the energy management controller EMS in the energy management unit 6.

[0049] A charging device with photovoltaic energy storage of the present utility model is provided with a photovoltaic unit. The photovoltaic unit converts solar energy into electrical energy through a photovoltaic component PV2. The photovoltaic unit is connected to an energy storage unit and transmits the converted electrical energy to the energy storage unit for supplementary charging, effectively utilizing solar energy, improving the electricity cleanliness rate, and reducing the dependence on grid supplementary charging. The charging unit is connected to the energy storage unit, and the electrical energy stored in the energy storage unit is transmitted to an electric vehicle through a charging gun to achieve new energy charging.

[0050] The charging unit 3 transmits the electrical energy of the energy storage unit 1 to an electric vehicle through a DC / DC converter module DC / DC3 and a charging gun to achieve new energy vehicle charging. The intelligent control module M3 collects the position and fault signals of the protective electrical appliance FU3, communicates and exchanges data with the metering module PJ3, the DC / DC converter module DC / DC3, and the vehicle's BMS, realizes the acquisition and remote control processing of charging electrical energy data and vehicle-end BMS data, and uploads the data to the energy management controller EMS in the energy management unit 6.

[0051] The AC unit 4 transmits the mains AC electrical energy to the charging rectifier module AC / DC4 through a protective electrical appliance. The charging rectifier module AC / DC4 rectifies the AC into DC power to supply the energy storage unit 1 to charge the battery pack BP1, that is, the energy storage unit 1 can charge and store the electrical energy of the AC unit 4 by itself. The intelligent control module M4 collects the position and fault signals of the protective electrical appliance, communicates and exchanges data with the metering module PJ4 and the charging rectifier module AC / DC4, realizes the acquisition and remote control processing of AC-side electrical energy data, and uploads the data to the energy management controller EMS in the energy management unit 6.

[0052] The mobile chassis unit 5 transports the entire charging device to a designated location according to the instructions of the energy management unit 6, and has navigation obstacle avoidance and trajectory planning algorithms to achieve driverless operation within the site. The intelligent control module M5 collects the position and fault signals of key devices in the mobile chassis unit 5, manages the energy of its own battery pack BP2 at the same time, and uploads the data to the energy management controller EMS in the energy management unit 6 for data interaction.

[0053] In a preferred embodiment, the mobile chassis unit 5 can also accept remote scheduling control of a mobile phone APP. The specific process is as follows: (1) Place an order requirement on the APP; (2) The cloud platform responds; (3) The EMS responds; (4) The mobile chassis responds.

[0054] The BMS module M1 and the intelligent control modules M2, M3, M4, and M5 collect the data of their respective units and upload the data to the energy management controller EMS; the energy management unit 6 realizes data interaction with the BMS module M1 and the intelligent control modules M2, M3, M4, and M5 through the energy management controller EMS, manages the five units of the energy storage unit 1, the photovoltaic unit 2, the charging unit 3, the AC unit 4, and the mobile chassis unit 5, coordinates the data of each unit, and realizes telemetry, remote measurement, and remote control of the whole machine system, improving the reliability of ultra-intelligent remote control.

[0055] In a preferred embodiment, the energy management unit 6 uploads the collected data to the cloud platform unit through the 4G network, and accepts the remote monitoring and charging order implementation of the cloud platform unit, realizes the management of charging requirements, and controls the mobile chassis unit 5 to perform preprocessing position movement to achieve driverless operation.

[0056] In the actual application process of the charging device with photovoltaic energy storage, the specific order placement process is as follows: (1) Scan the code with the APP to place an order; (2) The cloud platform responds; (3) The EMS responds; (4) The mobile chassis responds; (5) Automatically transport the device to the required parking space; (6) The vehicle owner inserts the charging gun to charge; (7) The vehicle charges; (8) The order is settled; (9) The vehicle owner removes the charging gun; (10) Automatically transport the device to the back charging position.

[0057] In a preferred embodiment, the charging device with photovoltaic energy storage of the present invention can specifically be a mobile charging robot with photovoltaic energy storage.

[0058] The charging device with photovoltaic energy storage of the present invention realizes power supply separation, making the mode of separating vehicle charging from grid power supply an effective way to disperse the peak electricity consumption pressure; has a photovoltaic power replenishment function, and in open-air places, can effectively utilize solar energy to replenish the energy storage, improving the electricity cleanliness rate and reducing the dependence on grid power replenishment; is provided with multiple protection electrical appliances and intelligent control modules, improving the safety performance of the charging device, and the interactive data is more comprehensive, improving the reliability of ultra-intelligent remote control.

[0059] In addition, the charging device with photovoltaic energy storage of the present utility model is movable and supports autonomous driving. It can be summoned for charging through terminal units such as mobile phone APPs, enabling interconnection between the vehicle and the charging device with photovoltaic energy storage. The vehicle owner only needs to place an order on the terminal such as the APP, and the charging device with photovoltaic energy storage will automatically drive to the side of the vehicle according to the positioning. Then, the vehicle owner can connect the charging gun to the vehicle charging port; it also effectively avoids the situation where the vehicle cannot drive away in time after being fully charged, improving the utilization efficiency of charging resources; and it is convenient for operation. In limited scenarios such as old residential areas and without private parking spaces where it is difficult to install charging piles, the mobile charging robot with photovoltaic energy storage can effectively solve this problem. At the same time, the mobile charging robot with photovoltaic energy storage requires less site cost and there are no costs for fixed charging piles and cable laying.

[0060] The charging device with photovoltaic energy storage of the present utility model combines the functions of photovoltaic, energy storage, charging, and driverless, achieving automation, unmanned operation, and super intelligence, and can effectively solve application scenarios such as peak travel, temporary breakdown, and no power distribution market.

[0061] The above are only the preferred embodiments of the present utility model and do not impose any limitations on the present utility model. Any simple modifications, changes, and equivalent structural transformations made to the above embodiments according to the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A charging device with photovoltaic energy storage, characterized in that, It includes an energy storage unit, a photovoltaic unit, and a charging unit with their ports electrically connected to each other; the energy storage unit includes a battery pack BP1, and a protection electrical appliance FU1 is connected in series to the battery pack BP1; the photovoltaic unit includes a photovoltaic module PV2, and a protection electrical appliance FU2 is connected in series to the photovoltaic module PV2; the charging unit includes a charging gun and a protection electrical appliance FU3 connected in series.

2. The charging device with photovoltaic energy storage according to claim 1, characterized in that, The energy storage unit further includes a DC contactor KM1 and a BMS module M1. A DC shunt FL1 is connected in series between the protection electrical appliance FU1 and the DC contactor KM1. The BMS module M1 establishes communication connections with the battery pack BP1, the DC shunt FL1, and the DC contactor KM1 respectively.

3. The charging device with photovoltaic energy storage according to claim 2, wherein The photovoltaic unit further includes a DC / DC converter module DC / DC2 and an intelligent control module M2. The protection electrical appliance FU2 is connected in series between the photovoltaic module PV2 and the DC / DC converter module DC / DC2. The intelligent control module M2 establishes a communication connection with the DC / DC converter module DC / DC2.

4. The charging device with photovoltaic energy storage according to claim 3, characterized in that, The charging unit further includes a DC / DC converter module DC / DC3 and an intelligent control module M3. A protection electrical appliance FU3, a DC shunt FL3, and a DC contactor KM3 are connected in series in sequence between the DC / DC converter module DC / DC3 and the charging gun. The DC shunt FL3 is connected to a metering module PJ3. The intelligent control module M3 establishes communication connections with the DC / DC converter module DC / DC3, the metering module PJ3, the DC contactor KM3, and the charging gun respectively.

5. The charging device with photovoltaic energy storage according to claim 4, characterized in that, It further includes an AC unit, which includes an aviation plug XZ and a charging rectification module AC / DC4; an AC protection electrical appliance Q1, a surge protection electrical appliance Q2, and a surge protector SPD are connected in series in sequence after the aviation plug XZ, and the surge protector SPD is grounded; The AC unit further includes a current transformer CT and a metering module PJ4. The current transformer CT is connected in parallel between the AC protection electrical appliance Q1 and the surge protection electrical appliance Q2. The charging rectification module AC / DC4 is connected to the current transformer CT. The metering module PJ4 is connected in series with a resistor and then connected in parallel with the current transformer CT; The AC unit further includes an intelligent control module M4. The intelligent control module M4 establishes communication connections with the charging rectification module AC / DC4, the metering module PJ4, and the AC protection electrical appliance Q1 respectively.

6. The charging device with photovoltaic energy storage according to claim 5, characterized in that, It further includes a mobile chassis unit, which includes a DC / DC converter module DC / DC5 and a driver. A battery pack BP2 is connected in series between the DC / DC converter module DC / DC5 and the driver. The DC / DC converter module DC / DC5 is connected in series with a switch K5; The mobile chassis unit further includes an intelligent control module M5. The intelligent control module M5 establishes communication connections with the DC / DC converter module DC / DC5, the driver, and the battery pack BP2 respectively.

7. The charging device with photovoltaic energy storage according to claim 6, characterized in that, The driver includes a chassis frame, driving wheels, and multiple sensors. The sensors include a radar, a camera, and a GPS.

8. The charging device with photovoltaic energy storage according to claim 6, characterized in that, It further includes an energy management unit, and the energy management unit includes a DC / DC converter module DC / DC6 and an energy management controller EMS, and the DC / DC converter module DC / DC6 is connected in series with the energy management controller EMS.

9. The charging device with photovoltaic energy storage according to claim 8, characterized in that The DC contactor KM1, the DC / DC converter modules DC / DC2 and DC / DC3, the charging rectifier module AC / DC4, the switch K5, and the DC / DC converter module DC / DC6 are electrically connected to each other.

10. A charging device with photovoltaic energy storage according to claim 8 or 9, characterized in that, The energy management controller EMS respectively establishes communication connections with the intelligent control module M2 and the intelligent control module M4 through an RS-485 interface, and the energy management controller EMS respectively establishes communication connections with the BMS module M1, the intelligent control module M2, and the intelligent control module M5 through a CAN bus.

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