Light storage and charging integrated charging station system

Abstract

The utility model provides a light storage and charging integrated charging station system, and relates to the technical field of new energy charging. The direct-current bus is used for transmitting the electric energy to the alternating-current power grid and the battery assembly or receiving the electric energy transmitted by the alternating-current power grid and the battery assembly; the photovoltaic module is used for converting solar energy into electric energy and transmitting the electric energy to the direct current bus; the battery assembly is used for transmitting the electric energy to the direct current bus or receiving and storing the electric energy transmitted by the direct current bus; the charging terminal is used for transmitting the electric energy in the direct-current bus to a power battery arranged in the vehicle, or transmitting the electric energy in the power battery arranged in the vehicle to the direct-current bus; and the battery replacing equipment is used for exchanging the power battery and the battery assembly in the vehicle. According to the utility model, the equipment structure of the charging station system is simplified, and bidirectional flow of electric energy between the equipment structures is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy charging, in particular to an integrated photovoltaic energy storage charging station system. Background Art

[0002] With the development of the vehicle industry, the functional requirements and equipment requirements for charging stations by users are gradually increasing.

[0003] At present, the charging station system mainly includes equipment such as charging piles, battery swapping stations, energy storage, and photovoltaics, and can realize charging vehicles in various ways.

[0004] However, the equipment in the charging station system is relatively independent, and the energy interaction between the equipment is relatively independent, resulting in problems such as complex system structure, many devices, high cost, and low efficiency. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide an integrated photovoltaic energy storage charging station system to simplify the equipment structure of the charging station system and realize the bidirectional flow of electric energy between the system devices.

[0006] The embodiment of the utility model provides an integrated photovoltaic energy storage charging station system, including:

[0007] An AC power grid;

[0008] A DC bus, connected to the AC power grid through a rectifier-inverter, for transmitting electric energy to the AC power grid and the battery module, or receiving the electric energy transmitted by the AC power grid and the battery module;

[0009] A photovoltaic module, connected to the DC bus, for converting solar energy into electric energy and transmitting the electric energy into the DC bus;

[0010] A battery module, connected to the DC bus through a first power distributor, for transmitting electric energy into the DC bus, or receiving the electric energy transmitted by the DC bus for storage;

[0011] A charging terminal, connected to the DC bus through a second power distributor, for transmitting the electric energy in the DC bus into the power battery set in the vehicle, or transmitting the electric energy in the power battery set in the vehicle into the DC bus;

[0012] A battery swapping device, connected to the battery module, for swapping the power battery with the battery module.

[0013] In a preferred embodiment of the present utility model, the number of the battery assemblies is at least one. One end of the first power distributor is connected to the DC bus, and the other end of the first power distributor is connected in parallel with each of the battery assemblies. The first power distributor is used to control the first charging power and the first discharging power corresponding to each of the battery assemblies.

[0014] In a preferred embodiment of the present utility model, the first charging powers of the battery assemblies are the same, and the first discharging powers of the battery assemblies are the same.

[0015] In a preferred embodiment of the present utility model, the number of the charging terminals is at least one. One end of the second power distributor is connected to the DC bus, and the other end of the second power distributor is connected in parallel with each of the charging terminals. The second power distributor is used to control the second charging power and the second discharging power corresponding to each of the charging terminals.

[0016] In a preferred embodiment of the present utility model, a communication module is provided in the charging terminal. The communication module is used to communicate with the vehicle-mounted system of the vehicle to obtain the second charging power or the second discharging power corresponding to the charging terminal.

[0017] In a preferred embodiment of the present utility model, a charging and discharging port is provided on the charging terminal for connecting to the charging port on the vehicle. Wherein, the number of the charging and discharging ports is one.

[0018] In a preferred embodiment of the present utility model, the rectifier-inverter includes a DC port and an AC port. The DC port is connected to the DC bus, and the AC port is connected to the AC power grid.

[0019] In a preferred embodiment of the present utility model, the charging terminal is connected to the battery assembly through the DC bus for transmitting the electric energy in the vehicle to the battery assembly, or transmitting the electric energy in the battery assembly to the vehicle.

[0020] In a preferred embodiment of the present utility model, a charging and discharging interface is provided in the battery assembly. The charging and discharging interface is used to connect the first power distributor and the battery assembly.

[0021] In a preferred embodiment of the present utility model, the interface of the power battery provided in the vehicle is matched with the charging and discharging interface. The charging and discharging interface is further used to connect the first power distributor and the power battery provided in the vehicle.

[0022] The embodiments of the present utility model bring the following beneficial effects:

[0023] An embodiment of the present utility model provides an integrated photovoltaic energy storage charging station system, which includes an AC power grid, a DC bus, photovoltaic modules, battery modules, battery swapping equipment, and charging terminals. Among them, the AC power grid and the DC bus are connected through a rectifier-inverter. The photovoltaic modules, battery modules, and charging terminals are connected to the DC bus, and the rectifier-inverter and the DC bus can be used as a medium to realize the mutual flow of energy among the AC power grid, battery modules, photovoltaic modules, and vehicles, without the need to repeatedly set up rectifier-inverters, simplifying the system structure.

[0024] Other features and advantages of the present disclosure will be described in the subsequent description, or some features and advantages can be inferred from the description or determined without doubt, or can be learned by implementing the above technologies of the present disclosure.

[0025] To make the above objects, features, and advantages of the present disclosure more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, the detailed description is as follows. Description of the Drawings

[0026] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 A structural diagram of an existing charging station system provided by an embodiment of the present utility model;

[0028] Figure 2 A structural diagram of an integrated photovoltaic energy storage charging station system provided by an embodiment of the present utility model;

[0029] Figure 3 A structural diagram of another integrated photovoltaic energy storage charging station system provided by an embodiment of the present utility model;

[0030] Figure 4 A schematic diagram of the power distribution circuit of an integrated photovoltaic energy storage charging station system provided by an embodiment of the present utility model.

[0031] Illustration:

[0032] 21 - AC power grid; 22 - DC bus; 23 - Photovoltaic modules; 24 - Battery modules; 25 - Charging terminals; 26 - Rectifier-inverter; 27 - First power distributor; 28 - Second power distributor; 29 - Battery swapping equipment. Detailed Embodiments

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] At present, when vehicles are charged, the method of accessing the AC power grid is mostly adopted, and charging piles are used for charging. To improve the return rate and solve the problem of single vehicle charging method, the charging station system has added photovoltaic equipment, battery swapping equipment, energy storage equipment, etc., to realize charging vehicles in multiple ways such as using solar energy, battery energy storage, and battery swapping. Figure 1 The following is a structural diagram of an existing charging station system provided by the present utility model, as Figure 1 shown. The charging station system includes photovoltaic equipment, battery swapping equipment, energy storage equipment, charging pile equipment, and V2G equipment. Among them, the charging pile equipment converts AC power into DC power through a rectification module and supplies power to the vehicle using a terminal. The battery swapping equipment converts AC power into DC power through a rectification module and stores it in the battery to swap the battery for the vehicle. The energy storage equipment stores the electrical energy in the AC power grid into the battery through a PCS (Power Conversion System, energy storage inverter), and when the power supply pressure of the AC power grid is relatively large, it supplies power to the AC power grid through the battery to relieve the power supply pressure of the AC power grid. The photovoltaic equipment converts the generated DC power into AC power through an inverter to supply electrical energy to the AC power grid, or directly stores the generated DC power into the battery in the energy storage equipment. The V2G equipment's rectification module and inversion module realize the mutual transmission of electrical energy between the vehicle and the AC power grid.

[0035] It can be seen that both the battery swapping equipment and the energy storage equipment contain batteries, and their functions are similar but they need to work as two independent devices. When the photovoltaic equipment, battery swapping equipment, and energy storage equipment output electrical energy, the generated power is DC power. However, since the electrical energy is transmitted between the devices through the AC power grid as a medium, the DC power needs to be converted into AC power before it can be connected to the AC power grid. Therefore, the devices in the charging station system are relatively independent of each other, and the flow of electrical energy between the devices uses the AC power grid as a medium. During the transmission process of electrical energy, multiple rectification and inversion operations are required to achieve the conversion between AC power and DC power. The structure is complex, there are many devices, the cost is high, and the efficiency is low.

[0036] Based on this, a photovoltaic-storage-charging integrated charging station system provided by an embodiment of the present utility model includes: an AC power grid; a DC bus connected to the AC power grid through a rectifier-inverter, configured to transmit electrical energy to the AC power grid and a battery assembly, or receive the electrical energy transmitted by the AC power grid; a photovoltaic module connected to the DC bus, configured to convert solar energy into electrical energy and transmit the electrical energy to the DC bus; a battery assembly connected to the DC bus through a first power distributor, configured to transmit electrical energy to the DC bus, or receive the electrical energy transmitted by the DC bus for storage; a charging terminal connected to the DC bus through a second power distributor, configured to transmit the electrical energy in the DC bus to a power battery disposed in a vehicle, or transmit the electrical energy in the power battery disposed in the vehicle to the DC bus; and a battery swapping device configured to swap the power battery in the vehicle with the battery assembly to achieve bidirectional energy flow. It is possible to simplify the equipment structure of the charging station system on the basis of the functions of the existing charging station system, and use the rectifier-inverter and the DC bus as a medium to achieve the mutual flow of energy among the AC power grid, the battery assembly, the photovoltaic module, and the vehicle.

[0037] For ease of understanding of this embodiment, a photovoltaic-storage-charging integrated charging station system disclosed by an embodiment of the present utility model will be introduced in detail first.

[0038] Embodiment 1

[0039] An embodiment of the present utility model provides a photovoltaic-storage-charging integrated charging station system. Figure 2 FIG. is a structural diagram of a photovoltaic-storage-charging integrated charging station system provided by an embodiment of the present utility model. As Figure 2 shown, the system may include the following structure:

[0040] AC power grid 21;

[0041] DC bus 22, connected to the AC power grid through a rectifier-inverter 26;

[0042] Photovoltaic module 23, connected to the DC bus;

[0043] Battery assembly 24, connected to the DC bus through a first power distributor 27;

[0044] Charging terminal 25, connected to the DC bus through a second power distributor 28;

[0045] Battery swapping device 29, connected to the battery assembly 24.

[0046] The AC power grid 21 refers to the three-phase alternating current used in daily life, which is used to provide an AC power supply with a certain power for the operation of the integrated photovoltaic energy storage charging station equipment. It can also recover the electric energy in the vehicle through the integrated photovoltaic energy storage charging station system, so as to achieve the purpose of energy conservation.

[0047] The DC bus 22 is a conductive device used to transmit and distribute DC electric energy. Through the DC bus, a DC power supply with a certain power can be provided for the equipment. When the battery module 24 and the charging terminal 25 are in the power consumption state, they can obtain electric energy from the DC bus 22. When the photovoltaic module 23, the battery module 24 and the charging terminal 25 are in the power generation state, the electric energy is transmitted to the DC bus 22.

[0048] The DC bus 22 and the AC power grid 21 are connected through a rectifier-inverter 26. Among them, the rectifier-inverter 26 is used to realize the conversion between direct current and alternating current. The rectifier-inverter 26 includes a DC end and an AC end. The DC end is connected to the DC bus 22, and the AC end is connected to the AC power grid 21. After the electric energy in the DC bus 22 is input into the rectifier-inverter 26 from the DC end, the rectifier-inverter 26 converts the direct current into alternating current and inputs the alternating current into the AC power grid 21 through the AC end. After the electric energy in the AC power grid 21 is input into the rectifier-inverter 26 from the AC end, the rectifier-inverter 26 converts the alternating current into direct current and inputs the direct current into the DC bus 22 through the DC end.

[0049] The photovoltaic module 23 refers to a solar panel, which is directly connected to the DC bus 22. Under the irradiation of sunlight, the photovoltaic module 23 converts solar energy into direct current and transmits the direct current to the DC bus 22 to provide electric energy for the battery module 24 and the charging terminal 25, or converts the direct current into alternating current through the rectifier-inverter 26 and transmits the alternating current to the AC power grid 21 to relieve the power supply pressure of the AC power grid. In the present utility model, the number of solar panels in the photovoltaic module is multiple, and a photovoltaic matrix is formed by series-parallel connection to improve the power generation effect of the photovoltaic module and provide sufficient DC power for the battery module 24 and the charging terminal 25.

[0050] The battery assembly 24 refers to a storage battery, which is connected to the DC bus 22 through the first power distributor 27, that is, one end of the first power distributor 27 is connected to the battery assembly 24 and the other end is connected to the DC bus 22. When electric energy is stored in the battery assembly 24, the electric energy can be transmitted to the DC bus 22 through the first power distributor 27. When the battery assembly 24 needs to be charged, electric energy can be obtained from the AC grid 21, the photovoltaic module 23 or the power battery of the vehicle. When obtaining electric energy from the AC grid 21, the electric energy of the AC grid 21 is converted from alternating current to direct current through the rectifier-inverter 26 and transmitted to the DC bus 22. The electric energy in the DC bus 22 is transmitted to the battery assembly 24 through the first power distributor 27 for storage. The first power distributor 27 is used to control the charging power and discharging power of the battery assembly 24. When obtaining electric energy from the photovoltaic module 23, the direct current generated by the photovoltaic module 23 is transmitted to the DC bus 22, and the direct current in the DC bus 22 is transmitted to the battery assembly 24 through the first power distributor 27 for storage. When obtaining electric energy from the power battery of the vehicle, the charging terminal 25 is connected to the power battery of the vehicle and the second power distributor, and the direct current in the power battery is transmitted to the second power distributor 28 and then continues to be transmitted to the DC bus 22. The direct current in the DC bus 22 is transmitted to the battery assembly 24 through the first power distributor 27 for storage.

[0051] In addition, the storage battery that constitutes the battery assembly 24 can be used as a power battery and directly installed in the vehicle. That is, the user can exchange the power battery on the vehicle with the battery assembly 24 to achieve two-way power swapping. Specifically, in one scenario, the user removes the power battery that needs to be charged on the vehicle through the power swapping device and installs the fully charged battery in the battery assembly 24 on the vehicle as a new power battery to supply power to the vehicle. The power battery removed from the vehicle serves as the new battery assembly 24, and the new battery assembly 24 can obtain electric energy from the AC grid 21, the photovoltaic module 23 or the charging terminal 25 to achieve charging. In another application scenario, the user can also exchange the fully charged power battery on the vehicle with the battery that is not fully charged or has no power in the battery assembly 24 to achieve benefits through the peak-valley electricity difference.

[0052] The charging terminal 25 refers to a device directly connected to the vehicle. Through the charging terminal 25, the power battery on the vehicle can be charged, or the electric energy in the power battery on the vehicle can be transmitted to the DC bus 22. The electric energy transmitted to the DC bus 22 can be stored in the battery assembly 24 or transmitted to the AC grid through the rectifier-inverter 26.

[0053] In an implementable manner, a charge-discharge port is provided on the charging terminal for connecting to the charging port on the vehicle, and the number of charge-discharge ports on one charging terminal is at least one. Among them, the charging port of the vehicle can realize the charging and discharging functions of the power battery, and the charging and discharging functions of the power battery are controlled by the vehicle's in-vehicle system. The driver can send a charging instruction or a discharging instruction to the in-vehicle system to realize the charging or discharging function of the power battery.

[0054] When the vehicle needs to be charged, the alternating current in the AC power grid 21 is converted into direct current by the rectifier-inverter 26 and transmitted to the DC bus 22. The electric energy in the DC bus 22 is transmitted to the charging terminal 25 through the second power distributor 28, and the electric energy is transmitted to the vehicle through the charge-discharge port on the charging terminal 25.

[0055] When the vehicle needs to be charged, the electric energy can be provided by the photovoltaic module 23. The photovoltaic module 23 transmits the electric energy to the DC bus 22, and the electric energy in the DC bus 22 is transmitted to the charging terminal 25 through the second power distributor 28, and the electric energy is transmitted to the vehicle through the charge-discharge port on the charging terminal 25.

[0056] When the vehicle needs to be charged, the electric energy in the battery module 24 can be transmitted to the DC bus 22 through the first power distributor 27, and the second power distributor 28 transmits the electric energy in the DC bus to the power battery of the vehicle through the charging terminal 25.

[0057] When the vehicle needs forward battery swapping, the fully charged battery in the battery module 24 is removed by the battery swapping device 29 and installed in the vehicle as a new power battery, and the power battery removed from the vehicle is connected to the first power distributor 27 as a new battery module to realize battery swapping.

[0058] When the vehicle needs to discharge, the electric energy in the power battery can be transmitted to the charging terminal 25, and the electric energy is transmitted to the DC bus 22 through the second power distributor 28, and the first power distributor 27 stores the electric energy in the DC bus into the battery module 24.

[0059] When the vehicle needs to discharge, the electric energy in the power battery can also be transmitted to the charging terminal 25, and the electric energy is transmitted to the DC bus 22 through the second power distributor 28. The electric energy in the DC bus 22 is converted from direct current to alternating current by the rectifier-inverter 26 and transmitted to the AC power grid 21.

[0060] When the vehicle needs reverse battery swapping, the fully charged battery in the vehicle can be exchanged with the undercharged battery in the battery module 24 through the battery swapping device 29 to realize storing the electric energy into the battery module 24.

[0061] An embodiment of the present utility model provides an integrated photovoltaic energy storage and charging station system, which includes an AC power grid, a DC bus, photovoltaic modules, battery modules, and a charging terminal. Among them, the AC power grid and the DC bus are connected through a rectifier-inverter. The photovoltaic modules, battery modules, and charging terminal are connected to the DC bus, and the rectifier-inverter and the DC bus can be used as a medium to realize the mutual flow of energy among the AC power grid, battery modules, and charging terminal, without the need to repeatedly set up rectifier-inverters, simplifying the system structure.

[0062] Embodiment 2

[0063] Another embodiment of the present utility model also provides an integrated photovoltaic energy storage and charging station system; Figure 3 It is a structural diagram of another integrated photovoltaic energy storage and charging station system provided by an embodiment of the present utility model.

[0064] As Figure 3 shown, the number of the battery modules 24 is at least one. One end of the first power distributor 27 is connected to the DC bus 22, and each of the battery modules 24 is connected in parallel to the other end of the first power distributor 27. The number of the charging terminals 25 is at least one. One end of the second power distributor 28 is connected to the DC bus 22, and each of the charging terminals 25 is connected in parallel to the other end of the second power distributor 28. A communication module is provided in the charging terminal 25, and the communication module is used for communicating with the vehicle-mounted system of the vehicle to obtain the second charging power or the second discharging power corresponding to the charging terminal 25.

[0065] Specifically, the first power distributor 27 is used to control the first charging power and the first discharging power corresponding to each of the battery modules 24. Among them, the first charging power of each of the battery modules 24 is the same, and the first discharging power of each of the battery modules 24 is the same. The second power distributor 28 is used to control the second charging power and the second discharging power corresponding to each of the charging terminals 25. A charging and discharging port is provided on the charging terminal 25 for connecting to the charging port on the vehicle. Among them, the number of the charging and discharging ports is at least one, that is, at least one charging and discharging port is provided on one charging terminal 25.

[0066] In an implementable manner, Figure 4 It is a schematic diagram of power distribution of an integrated photovoltaic energy storage and charging station system provided by an embodiment of the present utility model. As Figure 4As shown in the figure, after the rectifier-inverter 26 converts alternating current into direct current and transmits it to the DC bus 22, the first power distributor 27 is connected to the DC bus through six power supply modules with a power of 40 kW, and the maximum power that can be provided is 240 kW. When the first vehicle is connected to the charging terminal 25, the communication module set in the charging terminal 25 communicates with the in-vehicle system of the first vehicle to obtain the second charging power or the second discharging power fed back by the first vehicle. The second power distributor provides electrical energy for the vehicle according to the second charging power fed back by the first vehicle, or receives the electrical energy provided by the vehicle according to the second discharging power. When a second vehicle is connected to the charging terminal 25, the communication module set in the charging terminal 25 communicates with the in-vehicle system of the second vehicle to obtain the second charging power or the second discharging power fed back by the second vehicle. The second power distributor provides electrical energy for the vehicle according to the second charging power fed back by the second vehicle, or receives the electrical energy provided by the vehicle according to the second discharging power. And so on until the 240 kW power distribution is completed. Among them, during the power distribution process, it is necessary to ensure that at least one power supply module of the vehicles connected to the charging terminal other than the first vehicle is in use.

[0067] When the second charging power or the second discharging power of the first vehicle is greater than or equal to one-half of the maximum power provided by the DC bus, when a second vehicle is connected to the charging terminal 25, the communication module set in the charging terminal 25 communicates with the in-vehicle system of the second vehicle to obtain the second charging power or the second discharging power fed back by the second vehicle. If the second charging power or the second discharging power of the second vehicle is also greater than or equal to one-half of the maximum power provided by the DC bus, the DC bus will provide or receive electrical energy for the first vehicle and the second vehicle at an average power of 120 kW, and so on.

[0068] The two power distribution methods of the second power distributor can be selected according to the actual situation, which improves the flexibility of the power distribution method.

[0069] In the embodiment of the present invention, the first power distributor 27 and the second power distributor 28 can be combined into one device.

[0070] The integrated photovoltaic energy storage charging station system provided by the embodiment of the present invention includes an AC power grid, a DC bus, a photovoltaic module, a battery module, a battery swapping device, and a charging terminal. Among them, the AC power grid and the DC bus are connected through a rectifier-inverter, and the photovoltaic module, the battery module, and the charging terminal are connected to the DC bus. It can use the rectifier-inverter and the DC bus as a medium to realize the mutual flow of energy among the AC power grid, the battery module, and the charging terminal, without repeatedly setting up a rectifier-inverter, which simplifies the system structure. At the same time, different powers of direct current can be provided through the rectifier-inverter, increasing the flexibility of power distribution during the charging process of the charging terminal.

[0071] In all the examples shown and described herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0072] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0073] In addition, in the description of the embodiments of the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0075] In the embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the couplings or direct couplings or communication connections shown or discussed with each other can be through some communication interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical or other forms.

[0076] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0077] In addition, each functional unit in the embodiments of the present utility model may be integrated into a processing unit, may exist separately as individual units physically, or two or more units may be integrated into one unit.

[0078] Finally, it should be noted that the above-described embodiments are only specific implementation manners of the present utility model, used to illustrate the technical solutions of the present utility model, rather than limiting it. The protection scope of the present utility model is not limited thereto. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: Any person skilled in the art within the technical scope disclosed by the present utility model can still modify the technical solutions recorded in the foregoing embodiments or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A photovoltaic storage and charging integrated charging station system, characterized in that: include: AC power grid; A DC bus, connected to the AC grid via a rectifier inverter, for transmitting electric energy to the AC grid and the battery assembly, or receiving electric energy transmitted by the AC grid and the battery assembly; A photovoltaic module connected to the DC bus, used to convert solar energy into electrical energy and transmit the electrical energy to the DC bus; A battery assembly, connected to the DC bus through a first power distributor, for transmitting electric energy to the DC bus, or receiving electric energy transmitted by the DC bus for storage; A charging terminal connected to the DC bus through a second power distributor, and used to transmit the electric energy in the DC bus to a power battery provided in the vehicle, or to transmit the electric energy in the power battery provided in the vehicle to the DC bus; A battery replacement device is connected to the battery assembly and is used to replace the power battery in the vehicle with the battery assembly.

2. The system according to claim 1, characterized in that The number of the battery assemblies is at least one, one end of the first power distributor is connected to the DC bus, and each of the battery assemblies is connected in parallel to the other end of the first power distributor, and the first power distributor is used to control the first charging power and the first discharging power corresponding to each of the battery assemblies.

3. The system according to claim 2, characterized in that The first charging power of each of the battery assemblies is the same, and the first discharging power of each of the battery assemblies is the same.

4. The system according to claim 1, characterized in that The number of the charging terminals is at least one, one end of the second power distributor is connected to the DC bus, and each of the charging terminals is connected in parallel to the other end of the second power distributor, and the second power distributor is used to control the second charging power and the second discharging power corresponding to each of the charging terminals.

5. The system according to claim 4, characterized in that The charging terminal is provided with a communication module, and the communication module is used to communicate with the vehicle-mounted system of the vehicle to obtain the second charging power or the second discharging power corresponding to the charging terminal.

6. The system according to claim 1, characterized in that The charging terminal is provided with a charging and discharging port for connecting to a charging port on a vehicle, wherein the number of the charging and discharging port is one.

7. The system according to claim 1, characterized in that The rectifier inverter includes a DC end and an AC end, the DC end is connected to the DC bus, and the AC end is connected to the AC power grid.

8. The system according to claim 1, characterized in that The charging terminal is connected to the battery assembly via the DC bus, and is used to transmit the electric energy in the vehicle to the battery assembly, or to transmit the electric energy in the battery assembly to the vehicle.

9. The system according to claim 1, characterized in that The battery assembly is provided with a charge and discharge interface, and the charge and discharge interface is used to connect the first power distributor and the battery assembly.

10. The system according to claim 9, characterized in that The interface of the power battery provided in the vehicle matches the charging and discharging interface, and the charging and discharging interface is also used to connect the first power distributor and the power battery provided in the vehicle.

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