Light storage and charging integrated new energy charging pile

Abstract

The utility model belongs to the technical field of charging piles, and discloses a light storage and charging integrated new energy charging pile, which comprises a plurality of bidirectional charging and discharging modules, a switching unit, a plurality of charging guns, an energy storage battery, a photovoltaic unit, a man-machine interaction unit, a control unit and an intelligent bidirectional ammeter, one end of the control unit is connected with the bidirectional charging and discharging module, the other end of the control unit is connected with the switching unit, the charging gun and the energy storage battery are connected with the switching unit, the photovoltaic unit is connected with the energy storage battery, and the control unit is connected with the bidirectional charging and discharging module, the switching unit, the charging gun, the energy storage battery, the intelligent bidirectional ammeter and the man-machine interaction unit. And the switching unit is used for changing the working modes of the bidirectional charging and discharging module, the charging gun and the energy storage battery. The beneficial effects of the utility model are that the energy flow system is perfect, various convenient, efficient and safe charging and discharging modes can be provided for users, and the utilization rate of distributed energy storage energy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to charging pile technical field especially relates to a light storage and charging integrated new energy charging pile. BACKGROUND

[0002] In recent years, China's new energy vehicle develops rapidly, promotes the development of distributed energy storage field, lays a solid foundation for the rapid development of V2G bidirectional charging pile, and promotes the rapid development of light storage and charging integrated charging pile. However, the energy flow of small power light storage and charging integrated charging pile is single, and the energy flow mode is imperfect, which cannot meet the more complex charging and discharging demand of user end. The large power light storage and charging integrated new energy charging pile solves the problem of single energy flow mode and imperfect energy flow mode of the above small power light storage and charging integrated charging pile.

[0003] The existing common light storage and charging integrated charging pile realizes the method of charging and discharging by using a bidirectional charging and discharging module. When the new energy vehicle needs to be charged, the bidirectional charging and discharging module outputs high-voltage direct current to the new energy vehicle to charge the power battery of the new energy vehicle. When the new energy vehicle needs to be discharged, the bidirectional charging and discharging module takes power from the power battery of the new energy vehicle, and inputs to the power grid after isolation conversion and inversion.

[0004] The above existing method has the following shortcomings: 1. The charging and discharging power of the discharging system of the small power V2G bidirectional charging pile is small, and with the increase of electrical equipment, it cannot better meet the power demand of users; 2. The small power V2G bidirectional charging pile does not have energy storage battery, and when there is no new energy vehicle discharging, it cannot meet the power demand of other load ends, and cannot continuously and stably accept the power scheduling of virtual power grid; 3. Only a single gun, which cannot meet the demand of multiple vehicles charging and discharging at the same time; 4. The energy flow mode of the charging and discharging system of most V2G bidirectional charging piles in the market is single, only the V2G mode of new energy vehicle electric energy feedback to the power grid, the B2L mode of energy storage battery electric energy feedback to the load end, and the B2G mode of energy storage battery electric energy feedback to the power grid, which cannot meet the more complex charging and discharging demand of user end; 5. The existing common small power light storage and charging integrated charging pile has poor compatibility, cannot access virtual power plant, and cannot accept the power scheduling of virtual power plant through the cloud platform; 6. The discharging system of the existing common small power V2G bidirectional charging pile is imperfect, the discharging power cannot match the real-time load power, when the discharging power is too large, the V2G bidirectional charging pile exists input current to the power grid, which affects the power quality of the power grid, when the discharging power is too small, it cannot meet the demand of peak load shifting of user end, which does not conform to the concept of sustainable development; 7. The existing common small power light storage and charging integrated charging pile does not have a man-machine interaction unit, or the function of the man-machine interaction unit is imperfect, and does not have the function of connecting the cloud platform, which increases unnecessary trouble for the staff maintaining the charging pile, thereby increasing the maintenance cost.

[0005] Therefore, it is necessary to provide a new energy charging pile with light storage and charging integration, an energy flow system of which is perfect, and which can provide users with various convenient, efficient and safe charging and discharging modes. Content of the utility model

[0006] The utility model discloses a new energy charging pile with light storage and charging integration, which can effectively solve the technical problems involved in the background art.

[0007] To achieve the above-mentioned purposes, the technical scheme of the utility model is as follows:

[0008] A new energy charging pile with light storage and charging integration, comprising a plurality of bidirectional charging and discharging modules, a switching unit, a plurality of charging guns, an energy storage battery, a photovoltaic unit, a man-machine interaction unit and a control unit, one end of the bidirectional charging and discharging module is connected with a power supply port, the other end is connected with the switching unit, the charging gun and the energy storage battery are connected with the switching unit, the photovoltaic unit is connected with the energy storage battery, the control unit is connected with the bidirectional charging and discharging module, the switching unit, the charging gun, the energy storage battery and the man-machine interaction unit, and the switching unit is used for changing the working mode of the bidirectional charging and discharging module, the charging gun and the energy storage battery.

[0009] The utility model discloses a high -power light storage and charging all -in -one, including high -power light storage and charging integration new energy charging pile system host computer and two charging guns, the charging pile system host computer includes a plurality of bidirectional charging and discharging module, photovoltaic unit, switching unit, energy storage battery, electric energy metering unit, man -machine interaction unit, and bidirectional charging and discharging module is used to the electric car and / or energy storage battery power supply, or from electric car and / or energy storage battery electricity, photovoltaic unit is used to charge energy storage battery, switching unit is used to switch V2G, V2L, V2V, B2V, B2L etc. Figure 8The charging gun is used for connecting the electric vehicle end, the A / B double gun can be connected to two electric vehicles at the same time; the energy storage battery is used for discharging to the bidirectional charging and discharging module; the electric energy metering unit is used for recording the electric energy metering of the vehicle end charging and discharging; and the man-machine interaction unit is used for showing the user with the charging and discharging related parameters, the working state of the current charging pile and the operation condition of the charging pile to the technical maintenance personnel, so as to facilitate the maintenance operation. The present application can realize peak-shaving power utilization and the orderly charging and discharging of the vehicle through switching various charging and discharging modes, and provides the user with various convenient and efficient charging and discharging conditions, improves the charging and discharging efficiency of the new energy vehicle, shortens the charging and discharging time, meets the demand of multi-vehicle charging and discharging; through the energy storage battery and the electric vehicle power battery, the excess electric energy can be fed back to the power grid or another electric vehicle through the bidirectional charging and discharging module, the power utilization cost is reduced, in addition, through the data interaction with the intelligent bidirectional electric meter, the real-time discharging power is acquired, the discharging power of the bidirectional charging and discharging module is adjusted according to the set anti-backflow protection power value, the safe and orderly discharging can be realized, and the influence on the power grid electric energy quality is avoided. At the same time, through the cloud platform access virtual power plant, the maximum discharging power is uploaded in real time, through accepting the power scheduling control of the virtual power plant, the local power grid load peak pressure is further relieved, and the load trough is filled. The power grid load peak-valley difference is reduced, and the power generation and power utilization tend to be balanced and stable.

[0010] As a preferred improvement of the present application: the number of charging guns is 2-4, and the number of bidirectional charging and discharging modules is one more than the number of charging guns.

[0011] As a preferred improvement of the present application: the power supply port is connected with a circuit breaker, the circuit breaker is connected with an intelligent bidirectional electric meter, the intelligent bidirectional electric meter has positive and negative power detection functions and is connected with the control unit through an RS485 serial port communication bus.

[0012] As a preferred improvement of the present application: the man-machine interaction unit comprises a display screen and a button, and the display screen and the button are installed on the charging pile shell and connected with the control unit.

[0013] As a preferred improvement of the present application: the charging pile is provided with an electric energy metering unit.

[0014] As a preferred improvement of the present application: the photovoltaic unit comprises an MPPT controller, a solar power generation panel and a DC / DC converter, the output of the solar power generation panel is connected to the DC / DC converter, the DC / DC converter is controlled by the MPPT controller, and the output of the DC / DC converter is connected to the energy storage battery.

[0015] As a preferred improvement of the utility model: the DC / DC converter includes the capacitor C101, the capacitor C101 connects solar power generation panel, one end of capacitor C101 connects MOS tube Q101 drain, the source of MOS tube Q101 connects the drain of MOS tube Q102 and one end of capacitor C102, the other end of capacitor C102 connects one end of inductance L101, the other end of inductance L101 connects one end of inductance L102 and the pin 4 of transformer T101, the pin 3 of transformer T101 connects the other end of inductance L102, the source of MOS tube Q102 and the other end of capacitor C101, the pin 1 of transformer T101 connects the positive end of diode D101, the negative end of diode D101 connects one end of capacitor C103 and one end of resistance R101, the pin 2 of transformer R101 connects the other end of capacitor C103 and the other end of resistance R101, the resistance R101 connects the energy storage battery.

[0016] As a preferred improvement of the utility model: the switching unit includes a plurality of charging gun lines and battery lines, each charging gun is connected with a bidirectional charge-discharge module through a charging gun line, the energy storage battery is connected with a bidirectional charge-discharge module through a battery line, switches are arranged on the charging gun lines and the battery lines, the charging gun lines and the battery lines are connected through a transfer line, and switches are arranged on the transfer line.

[0017] As a preferred improvement of the utility model: the bidirectional charge-discharge module includes inductance L1, inductance L2 and inductance L3, one end of inductance L1, one end of inductance L2 and one end of inductance L3 are connected with a power supply port, the other end of inductance L1 is connected with the source of MOS tube Q1 and the drain of MOS tube Q4, the other end of inductance L2 is connected with the source of MOS tube Q2 and the drain of MOS tube Q5, the other end of inductance L3 is connected with the source of MOS tube Q3 and the drain of MOS tube Q6, the drain of MOS tube Q1, the drain of MOS tube Q2 and the drain of MOS tube Q3 are connected with one end of capacitor C1, the other end of capacitor C1 is connected with one end of capacitor C2, the source of MOS tube Q4, the source of MOS tube Q5 and the source of MOS tube Q6 are connected with the other end of capacitor C2.

[0018] The drain of MOS transistor Q7 and the drain of MOS transistor Q8 are connected to one end of the capacitor Cl, the source of MOS transistor Q7 is connected to the drain of MOS transistor Qll and one end of inductor L4, the other end of inductor L4 is connected to one end of capacitor C3, the other end of capacitor C3 is connected to pin 2 of transformer Tl, the source of MOS transistor Q8 is connected to the drain of MOS transistor Q12 and one end of inductor L5, the other end of inductor L5 is connected to pin 1 of transformer Tl, the source of MOS transistor Qll and the source of MOS transistor Q12 are connected to the other end of capacitor C2, pin 3 of transformer Tl is connected to one end of capacitor C4, the other end of capacitor C4 is connected to the source of MOS transistor Q10 and the drain of MOS transistor Q14, pin 4 of transformer Tl is connected to one end of inductor L6, the other end of inductor L6 is connected to the source of MOS transistor Q9 and the drain of MOS transistor Q13, the drain of MOS transistor Q9 and the drain of MOS transistor Q10 are connected to one end of capacitor C5, the other end of capacitor C5 is connected to one end of capacitor C6, the source of MOS transistor Q13 and the source of MOS transistor Q14 are connected to the other end of capacitor C6.

[0019] The drain of MOS transistor Q15 and the drain of MOS transistor Q16 are connected to one end of the capacitor Cl, the source of MOS transistor Q15 is connected to the drain of MOS transistor Q19 and one end of inductor L7, the other end of inductor L7 is connected to one end of capacitor C7, the other end of capacitor C7 is connected to pin 2 of transformer T2, the source of MOS transistor Q16 is connected to the drain of MOS transistor Q20 and one end of inductor L8, the other end of inductor L8 is connected to pin 1 of transformer T2, the source of MOS transistor Q19 and the source of MOS transistor Q20 are connected to the other end of capacitor C2, pin 3 of transformer T2 is connected to one end of capacitor C8, the other end of capacitor C8 is connected to the source of MOS transistor Q18 and the drain of MOS transistor Q22, pin 4 of transformer T2 is connected to one end of inductor L9, the other end of inductor L9 is connected to the source of MOS transistor Q17 and the drain of MOS transistor Q21, the drain of MOS transistor Q17 and the drain of MOS transistor Q18 are connected to one end of capacitor C9, the other end of capacitor C9 is connected to one end of capacitor C10, the source of MOS transistor Q21 and the source of MOS transistor Q22 are connected to the other end of capacitor C10, one end of capacitor C9 is connected to one end of capacitor C5, the other end of capacitor C10 is connected to the other end of capacitor C6.

[0020] The drain of MOS tube Q23 is connected with one end of capacitor C5 and the drain of MOS tube Q24, the source of MOS tube Q23 is connected with the source of MOS tube Q24, the drain of MOS tube Q25, the drain of MOS tube Q26 and one end of inductor L10, the other end of inductor L10 is connected with one end of capacitor C11, the source of MOS tube Q25 is connected with the other end of capacitor C6, the source of MOS tube Q26 and the other end of capacitor C11;

[0021] The drain of MOS tube Q27 is connected with one end of capacitor C5 and the drain of MOS tube Q28, the source of MOS tube Q27 is connected with the source of MOS tube Q28, the drain of MOS tube Q29, the drain of MOS tube Q30 and one end of inductor L11, the other end of inductor L11 is connected with one end of capacitor C12, the source of MOS tube Q29 is connected with the other end of capacitor C6, the source of MOS tube Q30 and the other end of capacitor C12, one end of capacitor C12 is connected with one end of capacitor C11, the other end of capacitor C12 is connected with the other end of capacitor C11, and capacitor C11 is connected with the switching unit.

[0022] As a preferred improvement of the utility model: the control unit is connected with a cloud platform, uploads the current state of the charging pile and the working state of each unit component to the cloud platform, and supports OTG cloud platform remote upgrading, the charging pile is provided with an output port, and the output port is used for load power supply, and the load includes but is not limited to household appliances. The high-power light storage and charging integrated new energy charging pile can access a virtual power plant through the cloud platform, upload the current chargeable and dischargeable power of the charging pile to the virtual power plant in real time, control the chargeable and dischargeable power of the bidirectional charge and discharge module in real time by receiving the power scheduling of the virtual power plant, relieve the local power grid load peak pressure, fill the load trough, reduce the power grid load peak-valley difference, and make power generation and power consumption tend to be balanced and stable.

[0023] The utility model has the advantages of the following:

[0024] The maximum power of the power storage and charging integrated new energy charging pile of the utility model can reach 60kW, satisfies the demand of most power consumption scenes of users, the charging pile is provided with energy storage batteries, when there is no new energy automobile discharging, the energy storage batteries can be used to provide convenient, efficient, safe and stable high-quality electric energy for other load ends, and the charging pile can receive power scheduling instructions of a virtual power plant through a cloud platform; the energy flow system is perfect, can provide various convenient, efficient and safe charging and discharging modes for users, makes up the defect of single energy flow mode of most V2G bidirectional charging pile discharging systems in the market, improves the utilization rate of distributed energy storage energy; when the energy of the energy storage batteries or electric vehicles is not allowed to be fed back to the power grid, the charging pile communicates with the intelligent bidirectional electric meter, obtains real-time local load power, adjusts the discharging power of the bidirectional charging and discharging module according to the set anti-backflow protection power value, can realize safe and orderly discharging, does not input current to the superior power grid, and avoids affecting the power quality of the power grid; the charging pile can access the virtual power plant through the cloud platform, upload the chargeable and dischargeable power in real time, accept the charge and discharge power management control of the virtual power plant, and improve the utilization rate of distributed energy storage energy; the man-machine interaction unit is configured, the working state of the current charging pile is displayed to users, the related parameter information such as the local module and the switching unit in the charging pile is displayed to the staff maintaining the charging pile, the maintenance efficiency is improved, and thus the maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor, wherein:

[0026] Figure 1 It is a schematic diagram of the utility model one light storage and charging integrated new energy charging pile;

[0027] Figure 2 It is a switching unit structure schematic diagram of the utility model;

[0028] Figure 3 It is a photovoltaic charging principle schematic diagram of the utility model;

[0029] Figure 4 It is a DCDC converter structure schematic diagram of the utility model;

[0030] Figure 5 It is a bidirectional charging and discharging module structure schematic diagram of the utility model;

[0031] Figure 6 It is the utility model Figure 5 Structure enlargement Figure 1 ;

[0032] Figure 7 For the utility model Figure 5 Structural amplification Figure 2 ;

[0033] Figure 8 For the utility model working mode schematic diagram

[0034] Figure 9 For the utility model energy flow schematic Figure 1 ;

[0035] Figure 10 For the utility model energy flow schematic Figure 2 ;

[0036] Figure 11 For the utility model virtual electric field schematic diagram.

[0037] In the figure: 1-two-way charge and discharge module, 2-switching unit, 3-charging gun, 4-energy storage battery, 5-photovoltaic unit, 6-human-computer interaction unit, 7-control unit. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0039] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0040] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0041] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium, can be internal communication of two elements or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In addition, the technical solutions among various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the present application.

[0043] Please refer to Figure 1 As shown in the drawings, the utility model provides a light storage and charging integrated new energy charging pile, including multiple bidirectional charge and discharge module 1, switching unit 2, multiple charging gun 3, energy storage battery 4, photovoltaic unit 5, man -machine interface unit 6 and control unit 7, bidirectional charge and discharge module 1 one end is connected with power supply mouth, the other end is connected with switching unit 2, charging gun 3 with energy storage battery 4 with switching unit 2 is connected, photovoltaic unit 5 connects energy storage battery 4, control unit 7 with bidirectional charge and discharge module 1, switching unit 2, charging gun 3, energy storage battery 4 and man -machine interface unit 6 are connected, switching unit 2 is used for changing the working mode of bidirectional charge and discharge module 1, charging gun 3 and energy storage battery 4. The number of charging gun 3 is 2-4, and the number of bidirectional charge and discharge module 1 is one more than the number of charging gun 3. The charging pile further comprises an intelligent bidirectional electric meter, the power supply port is connected with a circuit breaker, the circuit breaker is connected with the intelligent bidirectional electric meter, the intelligent bidirectional electric meter is connected with the commercial power, the intelligent bidirectional electric meter has power detection function, and is connected with the control unit 7 through RS485 serial communication bus, so that the charging and discharging power can be realized in real time. The man -machine interface unit 6 includes display screen and button, and the display screen and button are installed on the charging pile shell and connected with the control unit 7, and the charging pile is provided with an electric energy metering unit.

[0044] The bidirectional charge-discharge module is used to rectify and isolate the output power of the three-phase power grid, convert the high-voltage direct current, and charge the electric vehicle power battery or the energy storage battery; or take power from the electric vehicle power battery or the energy storage battery, and input the three-phase power grid after isolation conversion and inversion. The photovoltaic unit is used to take power from the solar panel, and charge the energy storage battery. The switching unit is used to switch the V2G mode of double-gun simultaneous charging, double-gun round charging, double-gun and energy storage battery simultaneous charging, double-gun simultaneous discharging, double-gun round discharging, A-gun discharging and B-gun charging V2V mode, A-gun charging and B-gun discharging V2V mode, B2L / B2G mode of energy storage battery discharging, B2V mode of energy storage battery discharging and A / B charging, A / B double-gun and energy storage battery simultaneous discharging, and the like. Two charging guns are used to connect two electric vehicles. The energy storage battery is used to charge through the bidirectional charge-discharge module, or discharge to the power grid, electric vehicle, and station load. The electric energy metering unit is used to measure and record the electric energy of the A / B double-gun charging and discharging. The man-machine interaction unit is used to show the user the related parameters of the current charging pile charging and discharging, and the working state of the current charging pile, and show the current operating condition of the charging pile to the technical maintenance personnel, so as to facilitate maintenance work. The control unit directly controls the working state of the switching unit and the charging gun. The control unit is connected with the bidirectional charge-discharge module, energy storage battery, photovoltaic unit, and man-machine interaction unit through a communication bus, and is used to control the working state of the bidirectional charge-discharge module, energy storage battery, photovoltaic unit, and man-machine interaction unit. In addition, the control unit has an RS485 serial communication bus connection function, is connected with an intelligent bidirectional electric meter through an RS485 serial communication bus, obtains real-time load power, and adjusts the charging and discharging power of the charging pile in real time. One side of the plurality of bidirectional charge-discharge modules is connected to the three-phase power grid, and the high-voltage direct current side of the other end is connected to the switching unit. The energy storage battery is used to charge during the price valley period, selectively charge and discharge during the price flat period, and discharge during the price peak period, realizes peak-shaving electricity, further realizes peak-load shifting, and relieves the pressure of the power grid load peak. The working state of the switching unit is controlled by the control unit. The control unit controls the working state of the switching unit, can switch the charging and discharging mode according to the user demand, and the charging and discharging mode includes double-gun simultaneous charging, double-gun round charging, double-gun and energy storage battery simultaneous charging, double-gun simultaneous discharging V2G mode, double-gun round discharging V2G mode, A-gun discharging and B-gun charging V2V mode, A-gun charging and B-gun discharging V2V mode, B2L / B2G mode of energy storage battery discharging, B2V mode of energy storage battery discharging and A / B charging, A / B double-gun and energy storage battery simultaneous discharging, and the like.The photovoltaic unit comprises an MPPT controller, a solar power generation panel, a DC / DC converter, the output of the solar power generation panel is connected to the DC / DC converter, the DC / DC converter is controlled by the MPPT controller, and the output of the DC / DC converter is connected to the energy storage battery. The A / B two charging guns, the high-power light storage and charging integrated new energy charging pile can connect two electric vehicles through the A / B two charging guns, and the electric energy measurement unit can measure and record the electric energy of the A / B double-gun charging and discharging. The man-machine interaction unit is used to show the user the current charging pile charging and discharging related parameters and the working state of the current charging pile, and in addition, the operation state of the charging pile is shown to the technical maintenance personnel, so as to facilitate the technical maintenance personnel to carry out maintenance inspection work. The control unit has the function of connecting the cloud platform, uploading the current state of the charging pile and the working state of each unit component to the cloud platform, supporting the OTG cloud platform remote upgrade, supporting the access of the virtual power plant through the cloud platform, receiving the dispatching of the virtual power plant, and the charging pile is provided with an output port for load power supply. The load includes but is not limited to household appliances.

[0045] As an embodiment, the high-power light storage and charging integrated new energy charging pile is connected with the intelligent bidirectional electric meter through the RS485 serial communication bus. When the high-power light storage and charging integrated charging pile discharges, the control unit detects the operation state of the discharge system in the station through the intelligent bidirectional electric meter. When it is detected that there is input current from the superior power grid, the control unit immediately issues a discharge power reduction instruction to the bidirectional charging and discharging module to avoid affecting the superior power grid. The high-power light storage and charging integrated new energy charging pile is connected with the virtual power plant through the cloud platform. The control unit calculates the current maximum discharge power by detecting the state of the energy storage battery and the charging gun, and uploads it to the virtual power plant in real time. When receiving the discharge power dispatching demand of the virtual power plant, the high-power light storage and charging integrated new energy charging pile discharges according to the instruction, and interacts with the intelligent bidirectional electric meter in real time to complete the load following of the discharge power and the local load power.

[0046] Please refer to Figure 2 As shown in the figure, the switching unit 2 comprises a plurality of charging gun lines and battery lines. Each charging gun 3 is connected to a bidirectional charging and discharging module 1 through a charging gun line. The energy storage battery 4 is connected to a bidirectional charging and discharging module 1 through a battery line. Switches are arranged on the charging gun lines and the battery lines. The charging gun lines and the battery lines are connected through a transfer line, and switches are arranged on the transfer line. The switches are connected to the control unit 7.

[0047] Please refer to Figures 8-10As shown, in the present embodiment, the light storage integrated charging pile has three bidirectional charging and discharging modules, and the switching unit includes 10 power scheduling switches. The output DC bus of the No. 1 bidirectional charging and discharging module is connected to the charging gun A through the power scheduling switches K11 and K12, and is connected in parallel with the output DC bus of the No. 2 bidirectional charging and discharging module through the power scheduling switches K21 and K22; the output DC bus of the No. 2 bidirectional charging and discharging module is connected in parallel with the output DC bus of the No. 3 bidirectional charging and discharging module through K31 and K32, and is connected to the energy storage battery through the power scheduling switches K51 and K52; the output DC bus of the No. 3 bidirectional charging and discharging module is connected to the charging gun B through the power scheduling switches K41 and K42. The high-power light storage integrated charging pile has V2G modes including double-gun simultaneous charging, double-gun round charging, double-gun and energy storage battery simultaneous charging, double-gun simultaneous discharging, double-gun round discharging, A-gun discharging and B-gun charging, A-gun charging and B-gun discharging, B2L / B2G mode of energy storage battery discharging, B2V mode of energy storage battery discharging and A / B charging, A / B double-gun and energy storage battery simultaneous discharging, etc.

[0048] Double-gun and energy storage battery simultaneous charging: the control unit controls the power scheduling switches K11, K12, K51, K52, K41 and K42 in the switching unit, the No. 1 and No. 3 bidirectional charging and discharging modules simultaneously charge two new energy vehicles through the charging guns, and the No. 2 bidirectional charging and discharging module charges the energy storage battery, and the new energy vehicles and the battery are evenly distributed with the total charging power.

[0049] Double-gun round charging: the control unit controls the power scheduling switches K11, K12, K21, K22, K31 and K32 in the switching unit to be closed, and the three bidirectional charging and discharging modules charge the A new energy vehicle through the A charging gun; after the A new energy vehicle is fully charged, the control unit controls the power scheduling switches K21, K22, K31, K32, K41 and K42 in the switching unit to be closed, and the three bidirectional charging and discharging modules charge the B new energy vehicle through the B charging gun; or the control unit controls the power scheduling switches K11, K12, K21, K22, K41 and K42 in the switching unit to be closed, and the No. 1 and No. 2 bidirectional charging and discharging modules charge the A new energy vehicle through the A charging gun, and the No. 3 bidirectional charging and discharging module charges the B new energy vehicle through the B charging gun; or the control unit controls the power scheduling switches K11, K12, K31, K32, K41 and K42 in the switching unit to be closed, and the No. 1 bidirectional charging and discharging module charges the A new energy vehicle through the A charging gun, and the No. 2 and No. 3 bidirectional charging and discharging modules charge the B new energy vehicle through the B charging gun.

[0050] V2G&B2G mode of vehicle-mounted energy and energy storage battery energy to the grid: the control unit controls the power scheduling switches K11, K12, K51, K52, K41, K42 in the switching unit to be closed, the No. 1 and No. 3 bidirectional charge-discharge modules take power from two new energy vehicles at the same time through the charging gun, and input the grid after isolation conversion and inversion, the No. 2 bidirectional charge-discharge module takes power for the energy storage battery, and inputs the grid after isolation conversion and inversion, and the new energy vehicles and the battery equally distribute the total power.

[0051] B2G mode of energy storage battery energy to the grid: the control unit controls the power scheduling switches K51, K52 in the switching unit to be closed, and the No. 2 bidirectional charge-discharge module takes power for the energy storage battery and inputs the grid after isolation conversion and inversion.

[0052] B2V mode of energy storage battery energy to the vehicle: the control unit controls the power scheduling switches K11, K12, K51, K52 in the switching unit to be closed, the No. 2 bidirectional charge-discharge module charges the energy storage battery, and supplies power for the No. 1 bidirectional charge-discharge module after isolation conversion and inversion, and the No. 1 bidirectional charge-discharge module charges the A new energy vehicle through the A charging gun; the control unit controls the power scheduling switches K41, K42, K51, K52 in the switching unit to be closed, the No. 2 bidirectional charge-discharge module charges the energy storage battery, and supplies power for the No. 3 bidirectional charge-discharge module after isolation conversion and inversion, and the No. 3 bidirectional charge-discharge module charges the A new energy vehicle through the A charging gun.

[0053] V2V mode of vehicle-mounted energy to the vehicle: the control unit controls the power scheduling switches K11, K12, K41, K42 in the switching unit to be closed, the No. 1 bidirectional charge-discharge module takes power from the power battery of the A new energy vehicle through the A charging gun at the same time, and supplies power for the No. 3 bidirectional charge-discharge module after isolation conversion and inversion, and the No. 3 bidirectional charge-discharge module charges the B new energy vehicle through the B charging gun; or the control unit controls the power scheduling switches K11, K12, K41, K42 in the switching unit to be closed, the No. 3 bidirectional charge-discharge module takes power from the power battery of the B new energy vehicle through the B charging gun at the same time, and supplies power for the No. 1 bidirectional charge-discharge module after isolation conversion and inversion, and the No. 1 bidirectional charge-discharge module charges the A new energy vehicle through the A charging gun.

[0054] Please refer to Figures 3-4As shown, the DC / DC converter includes a capacitor C101 connected to a solar power panel, one end of the capacitor C101 connected to a MOS tube Q101 drain, a source of the MOS tube Q101 connected to a drain of a MOS tube Q102 and one end of a capacitor C102, the other end of the capacitor C102 connected to one end of an inductor L101, the other end of the inductor L101 connected to one end of an inductor L102 and a pin 4 of a transformer T101, a pin 3 of the transformer T101 connected to the other end of the inductor L102, a source of the MOS tube Q102 and the other end of the capacitor C101, a pin 1 of the transformer T101 connected to a positive end of a diode D101, a negative end of the diode D101 connected to one end of a capacitor C103 and one end of a resistor R101, a pin 2 of the transformer R101 connected to the other end of the capacitor C103 and the other end of the resistor R101, and the resistor R101 connected to the energy storage battery 4.

[0055] Please refer to Figures 5-7 As shown, the bidirectional charge and discharge module 1 includes an inductor L1, an inductor L2 and an inductor L3, one end of the inductor L1, one end of the inductor L2 and one end of the inductor L3 connected to a power supply port, the other end of the inductor L1 connected to a source of a MOS tube Q1 and a drain of a MOS tube Q4, the other end of the inductor L2 connected to a source of a MOS tube Q2 and a drain of a MOS tube Q5, the other end of the inductor L3 connected to a source of a MOS tube Q3 and a drain of a MOS tube Q6, the drain of the MOS tube Q1, the drain of the MOS tube Q2 and the drain of the MOS tube Q3 connected to one end of a capacitor C1, the other end of the capacitor C1 connected to one end of a capacitor C2, the source of the MOS tube Q4, the source of the MOS tube Q5 and the source of the MOS tube Q6 connected to the other end of the capacitor C2.

[0056] The drain of MOS transistor Q7 and the drain of MOS transistor Q8 are connected to one end of the capacitor Cl, the source of MOS transistor Q7 is connected to the drain of MOS transistor Qll and one end of inductor L4, the other end of inductor L4 is connected to one end of capacitor C3, the other end of capacitor C3 is connected to pin 2 of transformer Tl, the source of MOS transistor Q8 is connected to the drain of MOS transistor Q12 and one end of inductor L5, the other end of inductor L5 is connected to pin 1 of transformer Tl, the source of MOS transistor Qll and the source of MOS transistor Q12 are connected to the other end of capacitor C2, pin 3 of transformer Tl is connected to one end of capacitor C4, the other end of capacitor C4 is connected to the source of MOS transistor Q10 and the drain of MOS transistor Q14, pin 4 of transformer Tl is connected to one end of inductor L6, the other end of inductor L6 is connected to the source of MOS transistor Q9 and the drain of MOS transistor Q13, the drain of MOS transistor Q9 and the drain of MOS transistor Q10 are connected to one end of capacitor C5, the other end of capacitor C5 is connected to one end of capacitor C6, the source of MOS transistor Q13 and the source of MOS transistor Q14 are connected to the other end of capacitor C6.

[0057] The drain of MOS transistor Q15 and the drain of MOS transistor Q16 are connected to one end of the capacitor Cl, the source of MOS transistor Q15 is connected to the drain of MOS transistor Q19 and one end of inductor L7, the other end of inductor L7 is connected to one end of capacitor C7, the other end of capacitor C7 is connected to pin 2 of transformer T2, the source of MOS transistor Q16 is connected to the drain of MOS transistor Q20 and one end of inductor L8, the other end of inductor L8 is connected to pin 1 of transformer T2, the source of MOS transistor Q19 and the source of MOS transistor Q20 are connected to the other end of capacitor C2, pin 3 of transformer T2 is connected to one end of capacitor C8, the other end of capacitor C8 is connected to the source of MOS transistor Q18 and the drain of MOS transistor Q22, pin 4 of transformer T2 is connected to one end of inductor L9, the other end of inductor L9 is connected to the source of MOS transistor Q17 and the drain of MOS transistor Q21, the drain of MOS transistor Q17 and the drain of MOS transistor Q18 are connected to one end of capacitor C9, the other end of capacitor C9 is connected to one end of capacitor C10, the source of MOS transistor Q21 and the source of MOS transistor Q22 are connected to the other end of capacitor C10, one end of capacitor C9 is connected to one end of capacitor C5, the other end of capacitor C10 is connected to the other end of capacitor C6.

[0058] The drain of MOS transistor Q23 is connected to one end of capacitor C5 and the drain of MOS transistor Q24, the source of MOS transistor Q23 is connected to the source of MOS transistor Q24, the drain of MOS transistor Q25, the drain of MOS transistor Q26 and one end of inductor L10, the other end of inductor L10 is connected to one end of capacitor Cll, the source of MOS transistor Q25 is connected to the other end of capacitor C6, the source of MOS transistor Q26 and the other end of capacitor Cll.

[0059] The drain of MOS transistor Q27 is connected to one end of capacitor C5 and the drain of MOS transistor Q28, the source of MOS transistor Q27 is connected to the source of MOS transistor Q28, the drain of MOS transistor Q29, the drain of MOS transistor Q30 and one end of inductor Ll l, the other end of inductor Ll l is connected to one end of capacitor C12, the source of MOS transistor Q29 is connected to the other end of capacitor C6, the source of MOS transistor Q30 and the other end of capacitor C12, one end of capacitor C12 is connected to one end of capacitor Cll, the other end of capacitor C12 is connected to the other end of capacitor Cll, capacitor Cll is connected to the switching unit 2.

[0060] Please refer to Figure 11As shown, a high-power light storage and charging integrated new energy charging pile is provided, which can perfect the energy flow system of the bidirectional charging pile, improve the utilization rate of distributed energy storage, realize the orderly charging and discharging of vehicles, and meet the more complex charging and discharging needs of the user end. The bidirectional charging and discharging module is used to supply power to the electric vehicle and / or energy storage battery, or take power from the electric vehicle and / or energy storage battery; the photovoltaic unit is used to charge the energy storage battery; the switching unit is used to switch the V2G, V2L, V2V, B2V, B2L and other charging and discharging modes, control the charging and discharging power scheduling of the bidirectional charging and discharging module, and switch the charging and discharging modes according to the needs of the user; the charging and discharging power scheduling includes distributing the total charging and discharging power equally according to two charging guns and energy storage batteries, distributing the charging and discharging power of each charging gun according to the proportion, and distributing any charging gun or energy storage battery to the total charging and discharging power. The input side of the terminal is connected with the AC power distribution cabinet, the output side of the terminal is connected with the input end of the molded case circuit breaker, the output side of the molded case circuit breaker is connected with the input side of the three bidirectional charging and discharging modules; the bidirectional charging and discharging module is used to supply power to the electric vehicle and / or energy storage battery, or take power from the electric vehicle and / or energy storage battery; the AC power distribution cabinet is used to output AC power and connect the local virtual power grid and the superior power grid; the power scheduling switch constitutes the switching unit, is connected with the charging and discharging module, the energy storage battery and the charging gun, is controlled by the control unit, switches the charging and discharging mode according to the needs of the user, and distributes the charging and discharging power of the bidirectional charging and discharging module to the charging gun and the energy storage battery. The energy storage battery is used to charge in the electricity price valley period, selectively charge and discharge in the electricity price flat period, and discharge in the electricity price peak period, realizes the peak-shaving electricity, further fills the valley, and relieves the peak pressure of the power grid load. The energy flow system is relatively perfect, the dispersed electric power can be fully utilized, the peak-shaving electricity is realized through the integration of the local virtual power plant and the power scheduling of the virtual power plant, the efficiency of the distributed energy storage charging and discharging is improved, and the more complex charging and discharging needs of the user end can be met. In the area where the power system is not perfect or the power fluctuation is large, the power management of the virtual power plant is accepted through the cloud platform, the power scheduling of the local power grid is participated, and the continuous, stable and safe operation of the local power grid is ensured.

[0061] Although the embodiments of the present application have been disclosed as above, they are not limited to the application and implementation listed in the specification and embodiments, and can be fully applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A light storage and charging integrated new energy charging pile, characterized in that: The application relates to a charging pile, which comprises a plurality of bidirectional charging and discharging modules (1), a switching unit (2), a plurality of charging guns (3), an energy storage battery (4), a photovoltaic unit (5), a man-machine interaction unit (6) and a control unit (7), one end of the bidirectional charging and discharging module (1) is connected with a power supply port, the other end is connected with the switching unit (2), the charging gun (3) and the energy storage battery (4) are connected with the switching unit (2), the photovoltaic unit (5) is connected with the energy storage battery (4), the control unit (7) is connected with the bidirectional charging and discharging module (1), the switching unit (2), the charging gun (3), the energy storage battery (4) and the man-machine interaction unit (6), and the switching unit (2) is used for changing the working modes of the bidirectional charging and discharging module (1), the charging gun (3) and the energy storage battery (4).

2. The optical storage and charging integrated new energy charging pile according to claim 1, characterized in that: The number of the charging guns (3) is 2-4, and the number of the bidirectional charging and discharging modules (1) is one more than that of the charging guns (3). 3.The optical storage and charging integrated new energy charging pile according to claim 1, characterized in that: The power supply port is connected with a circuit breaker, the circuit breaker is connected with an intelligent bidirectional electric meter, the intelligent bidirectional electric meter has positive and negative power detection functions, and is connected with the control unit (7) through an RS485 serial port communication bus.

4. The optical storage and charging integrated new energy charging pile according to claim 1, characterized in that: The man-machine interaction unit (6) comprises a display screen and buttons, the display screen and buttons are installed on a charging pile shell and connected with the control unit (7). 5.The optical storage and charging integrated new energy charging pile according to claim 1, characterized in that: The charging pile is provided with an electric energy metering unit. 6.The optical storage and charging integrated new energy charging pile according to claim 1, characterized in that: The photovoltaic unit (5) comprises an MPPT controller, a solar power generation panel and a DC / DC converter, the output of the solar power generation panel is connected with the DC / DC converter, the DC / DC converter is controlled by the MPPT controller, and the output of the DC / DC converter is connected with the energy storage battery (4).

7. The optical storage and charging integrated new energy charging pile according to claim 6, characterized in that: The DC / DC converter comprises a capacitor C101, the capacitor C101 is connected with the solar power generation panel, one end of the capacitor C101 is connected with a drain electrode of a MOS tube Q101, the source electrode of the MOS tube Q101 is connected with the drain electrode of a MOS tube Q102 and one end of a capacitor C102, the other end of the capacitor C102 is connected with one end of an inductor L101, the other end of the inductor L101 is connected with one end of an inductor L102 and a pin 4 of a transformer T101, a pin 3 of the transformer T101 is connected with the other end of the inductor L102, the source electrode of the MOS tube Q102 and the other end of the capacitor C101, a pin 1 of the transformer T101 is connected with the positive end of a diode D101, the negative end of the diode D101 is connected with one end of a capacitor C103 and one end of a resistor R101, a pin 2 of the transformer R101 is connected with the other end of the capacitor C103 and the other end of the resistor R101, and the resistor R101 is connected with the energy storage battery (4). 8.The optical storage and charging integrated new energy charging pile according to claim 1, characterized in that: The switching unit (2) includes a plurality of charging gun lines and battery lines, each of the charging guns (3) is connected to a two-way charge-discharge module (1) through a charging gun line, the energy storage battery (4) is connected to a two-way charge-discharge module (1) through a battery line, switches are arranged on the charging gun lines and the battery lines, the charging gun lines and the battery lines are connected through a transfer line, and switches are arranged on the transfer line. 9.The optical storage and charging integrated new energy charging pile according to claim 1, characterized in that: The two-way charge-discharge module (1) includes inductors L1, L2 and L3, one end of the inductor L1, one end of the inductor L2 and one end of the inductor L3 are connected to a power supply port, the other end of the inductor L1 is connected to the source electrode of a MOS tube Q1 and the drain electrode of a MOS tube Q4, the other end of the inductor L2 is connected to the source electrode of a MOS tube Q2 and the drain electrode of a MOS tube Q5, the other end of the inductor L3 is connected to the source electrode of a MOS tube Q3 and the drain electrode of a MOS tube Q6, the drain electrode of the MOS tube Q1, the drain electrode of the MOS tube Q2 and the drain electrode of the MOS tube Q3 are connected to one end of a capacitor C1, the other end of the capacitor C1 is connected to one end of a capacitor C2, the source electrode of the MOS tube Q4, the source electrode of the MOS tube Q5 and the source electrode of the MOS tube Q6 are connected to the other end of the capacitor C2; the drain electrode of a MOS tube Q7 and the drain electrode of a MOS tube Q8 are connected to one end of the capacitor C1, the source electrode of the MOS tube Q7 is connected to the drain electrode of a MOS tube Q11 and one end of an inductor L4, the other end of the inductor L4 is connected to one end of a capacitor C3, the other end of the capacitor C3 is connected to pin 2 of a transformer T1, the source electrode of the MOS tube Q8 is connected to the drain electrode of a MOS tube Q12 and one end of an inductor L5, the other end of the inductor L5 is connected to pin 1 of the transformer T1, the source electrode of the MOS tube Q11 and the source electrode of the MOS tube Q12 are connected to the other end of the capacitor C2, pin 3 of the transformer T1 is connected to one end of a capacitor C4, the other end of the capacitor C4 is connected to the source electrode of a MOS tube Q10 and the drain electrode of a MOS tube Q14, pin 4 of the transformer T1 is connected to one end of an inductor L6, the other end of the inductor L6 is connected to the source electrode of a MOS tube Q9 and the drain electrode of a MOS tube Q13, the drain electrode of the MOS tube Q9 and the drain electrode of the MOS tube Q10 are connected to one end of a capacitor C5, the other end of the capacitor C5 is connected to one end of a capacitor C6, the source electrode of the MOS tube Q13 and the source electrode of the MOS tube Q14 are connected to the other end of the capacitor C6; the drain electrode of the MOS tube Q9 and the drain electrode of the MOS tube Q10 are connected to one end of a capacitor C5, the other end of the capacitor C5 is connected to one end of a capacitor C6, the source electrode of the MOS tube Q13 and the source electrode of the MOS tube Q14 are connected to the other end of the capacitor C6; The drain of MOS tube Q15 and the drain of MOS tube Q16 are connected to one end of the capacitor C1, the source of MOS tube Q15 is connected to the drain of MOS tube Q19 and one end of inductor L7, the other end of inductor L7 is connected to one end of capacitor C7, the other end of capacitor C7 is connected to pin 2 of transformer T2, the source of MOS tube Q16 is connected to the drain of MOS tube Q20 and one end of inductor L8, the other end of inductor L8 is connected to pin 1 of transformer T2, the source of MOS tube Q19 and the source of MOS tube Q20 are connected to the other end of capacitor C2, pin 3 of transformer T2 is connected to one end of capacitor C8, the other end of capacitor C8 is connected to the source of MOS tube Q18 and the drain of MOS tube Q22, pin 4 of transformer T2 is connected to one end of inductor L9, the other end of inductor L9 is connected to the source of MOS tube Q17 and the drain of MOS tube Q21, the drain of MOS tube Q17 and the drain of MOS tube Q18 are connected to one end of capacitor C9, the other end of capacitor C9 is connected to one end of capacitor C10, the source of MOS tube Q21 and the source of MOS tube Q22 are connected to the other end of capacitor C10, one end of capacitor C9 is connected to one end of capacitor C5, the other end of capacitor C10 is connected to the other end of capacitor C6; The drain of MOS tube Q23 is connected to one end of capacitor C5 and the drain of MOS tube Q24, the source of MOS tube Q23 is connected to the source of MOS tube Q24, the drain of MOS tube Q25, the drain of MOS tube Q26 and one end of inductor L10, the other end of inductor L10 is connected to one end of capacitor C11, the source of MOS tube Q25 is connected to the other end of capacitor C6, the source of MOS tube Q26 and the other end of capacitor C11; The drain of MOS tube Q27 is connected to one end of capacitor C5 and the drain of MOS tube Q28, the source of MOS tube Q27 is connected to the source of MOS tube Q28, the drain of MOS tube Q29, the drain of MOS tube Q30 and one end of inductor L11, the other end of inductor L11 is connected to one end of capacitor C12, the source of MOS tube Q29 is connected to the other end of capacitor C6, the source of MOS tube Q30 and the other end of capacitor C12, one end of capacitor C12 is connected to one end of capacitor C11, the other end of capacitor C12 is connected to the other end of capacitor C11, and capacitor C11 is connected to the switching unit (2). 10.The optical storage and charging integrated new energy charging pile according to claim 1, characterized in that: The control unit (7) is connected to a cloud platform, uploads the current state of the charging pile and the working state of each unit component to the cloud platform, and supports remote upgrading of the OTG cloud platform, the charging pile is provided with an output port, and the output port is used for load power supply, and the load includes but is not limited to household appliances.

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