WO2020113454A1 - Charging and swapping-integrated battery swapping station and system thereof - Google Patents

Abstract

A charging and swapping-integrated battery swapping station and a system thereof. The charging and swapping-integrated battery swapping station system comprises: a direct current bus (2), a photovoltaic system, a wind power system, and a central energy management system (1); the direct current bus (2) is electrically connected to the photovoltaic system and the wind power system, separately; the direct current bus (2) is used as an electric energy transmission channel of the battery swapping station; the central energy management system (1) is in communicational connection with the photovoltaic system and the wind power system, separately; the photovoltaic system is used for converting solar energy into first electric energy, and transmitting the first electric energy to the direct current bus (2) according to a first power transmission instruction sent by the central energy management system (1); the wind power system is used for converting wind energy into second electric energy, and transmitting the second electric energy to the direct current bus (2) according to a second power transmission instruction sent by the central energy management system (1); battery swapping station electric energy comprises the first electric energy and the second electric energy. The charging and swapping-integrated battery swapping station system makes full use of the first electric energy and the second electric energy, so that the pressure of a power grid is relieved, resource utilization is improved, and environment protection is achieved.

Description

Charging and replacing integrated power station and its system Technical field

The invention relates to the technical field of charging and replacing electric vehicles, in particular to an integrated charging and replacing power station and its system.

Background technique

Under the banner of the national strategy to encourage the use of clean energy vehicles, electric vehicles are having an increasingly broad market. In my country, electric vehicles have gradually become the focus of the development of the automobile industry and the energy industry. With the promotion of electric vehicles, how to effectively and quickly solve the charging and replacement of electric vehicles has become the most eye-catching problem.

At present, the energy structure of the replacement power station is single, and its limitations are relatively large.

The rechargeable battery compartment is fixed, and the power supply line is single;

The energy source is single, mainly from the power grid. It is difficult to expand due to the application of electricity to the power grid, and the pressure on the power grid during the peak period is high. Using only the power of the power grid is also not conducive to comprehensive energy utilization and energy conservation and environmental protection.

There is no ability to feed back the power grid, and the existing substations do not have the function of peak-shaving and valley-filling. The proportion of night-time charging is less than that of daytime charging, and resources are not fully utilized.

The obsolete vehicle batteries were not effectively used in the power exchange station, and the staircase utilization was insufficient.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the shortcomings in the prior art that the electric energy charged by the substation only comes from the power grid, which is caused to the grid and does not realize the comprehensive utilization of multiple energy sources, and provides an integrated rechargeable substation and its system .

The present invention solves the above technical problems through the following technical solutions:

An integrated charging-replacement power station system, the integrated charging-replacement power station system includes: a DC bus, a photovoltaic system, a wind power system, and a central energy management system;

The DC bus is electrically connected to the photovoltaic system and the wind power system, respectively;

The DC bus is used as a power transmission channel of the substation;

The central energy management system includes a first communication module through which the central energy management system is in communication with the photovoltaic system and the wind power system, respectively;

The photovoltaic system is used to convert solar energy into first electrical energy, the central energy management system is used to send a first power transmission instruction to the photovoltaic system, and the photovoltaic system is also used to receive the first power transmission After the instruction, the first electrical energy is transmitted to the DC bus;

The wind power system is used to convert wind energy into second electrical energy, the central energy management system is also used to send a second power transmission instruction to the wind power system, and the wind power system is also used to receive the second power transmission After the electrical instruction, the second electrical energy is transmitted to the DC bus;

The electrical energy of the substation includes the first electrical energy and the second electrical energy.

Preferably, the photovoltaic system includes a photovoltaic panel and a photovoltaic controller;

The photovoltaic controller includes a second communication module, and through the first communication module and the second communication module, the central energy management system is communicatively connected to the photovoltaic controller;

The photovoltaic controller is electrically connected to the DC bus;

The photovoltaic panel is used to receive solar energy and transmit the solar energy to the photovoltaic controller;

The photovoltaic controller is used to convert the solar energy into the first electrical energy and transmit the first electrical energy to the DC bus according to the first power transmission instruction.

Preferably, the wind power system includes a fan and a fan controller;

The wind turbine controller includes a third communication module, and through the first communication module and the third communication module, the central energy management system is communicatively connected to the wind turbine controller;

The fan controller is electrically connected to the DC bus;

The fan is used to receive wind energy and transmit the wind energy to the fan controller;

The fan controller converts the wind energy into the second electrical energy, and transmits the second electrical energy to the DC bus according to the second power transmission instruction.

Preferably, the integrated charging and replacing power station system further includes an energy storage system;

The energy storage system includes a bidirectional DC-DC charging module and an energy storage battery;

The bidirectional DC-DC charging module includes a fourth communication module, and through the first communication module and the fourth communication module, the central energy management system is communicatively connected to the bidirectional DC-DC charging module;

The bidirectional DC-DC charging module is electrically connected to the DC bus;

The central energy management system is also used to send an energy storage battery charging instruction to the bidirectional DC-DC charging module. The bidirectional DC-DC charging module is used to receive the energy storage battery charging instruction after receiving the energy storage battery charging instruction. The electric energy of the substation on the DC bus, and the energy storage battery is charged by the electric energy of the substation.

Preferably, the central energy management system is also used to send an energy storage battery power transmission instruction to a bidirectional DC-DC charging module, and the bidirectional DC-DC charging module is also used to receive the energy storage battery power transmission instruction Then, the third electrical energy stored in the energy storage battery is transmitted to the DC bus;

The electrical energy of the substation also includes the third electrical energy.

Preferably, the integrated charging-replacement power station system further includes a bidirectional AC-DC module;

The bidirectional AC-DC module includes a fifth communication module, and through the first communication module and the fifth communication module, the central energy management system is communicatively connected to the bidirectional AC-DC module;

The bidirectional AC-DC module is electrically connected to the DC bus and the power grid respectively;

The central energy management system is also used to send a grid power receiving instruction to a bidirectional AC-DC module. The bidirectional AC-DC module is used to receive alternating current from the grid after receiving the grid power receiving instruction and Converting the alternating current into fourth electrical energy and transmitting it to the direct current bus;

The electrical energy of the substation also includes the fourth electrical energy.

Preferably, the central energy management system is also used to send a grid power feedback command to the bidirectional AC-DC module, and the bidirectional AC-DC module is also used to receive the grid power feedback command. The electrical energy of the substation on the DC bus is converted into alternating current and fed back to the power grid.

Preferably, the integrated charging and replacing power station system further includes a power changing system;

The power exchange system includes a DC-DC charging module and a power exchange battery;

The DC-DC charging module includes a sixth communication module, and through the first communication module and the sixth communication module, the central energy management system is communicatively connected to the DC-DC charging module;

The DC-DC charging module is electrically connected to the DC bus;

The central energy management system is also used to send a battery-changing battery charging instruction to the DC-DC charging module, and the DC-DC charging module is used to receive the DC bus after receiving the battery-changing battery charging instruction The power of the power exchange station on the battery, and the power exchange battery charges the power exchange battery.

Preferably, the integrated charging-replacement system also includes a fast-charging DC-DC module;

The fast charging DC-DC module includes a seventh communication module, and through the first communication module and the seventh communication module, the central energy management system is in communication connection with the fast charging DC-DC module;

The fast charging DC-DC module is electrically connected to the DC bus;

The central energy management system is also used to send a fast charge instruction to the fast charge DC-DC module, and the fast charge DC-DC module is used to receive the fast charge on the DC bus after receiving the fast charge instruction The electric power of the substation, and the electric vehicle is charged by the electric power of the substation.

Preferably, the charging power of the DC-DC charging module is 20 kilowatts.

Preferably, the charging power of the fast charging DC-DC module is 350 kilowatts.

Preferably, the central energy management system is also used when the power of the substation on the DC bus exceeds a preset first threshold, the number of charged electric vehicles is less than the second threshold, and the number of battery replacement When it is less than the third threshold, the power of the substation on the DC bus of the bidirectional AC-DC module is controlled to be converted into AC power and fed back to the power grid.

Preferably, the bidirectional AC-DC module is also used to adjust the working voltage of the DC bus, and the working voltage ranges from 1000V to 1500V.

Preferably, the central energy management system is also used when the photovoltaic system and/or the wind power system is working, the electricity price of the power grid is at a low price, the number of electric vehicles to be charged is less than the second threshold, and the battery is replaced When the quantity is less than the third threshold, the photovoltaic system and/or the wind power system are controlled to transmit the first electrical energy and/or the second electrical energy to the DC bus to charge the energy storage battery.

Preferably, the central energy management system is also used when the photovoltaic system and the wind power system stop working, the electricity price of the power grid is at a low price, the number of electric vehicles to be charged is less than the second threshold, and the battery When the quantity is less than the third threshold, the bidirectional AC-DC module is controlled to transmit the fourth electrical energy to the DC bus to charge the energy storage battery.

Preferably, the central energy management system is also used to control the bidirectional DC-DC charging module to store the energy storage battery when the photovoltaic system and the wind power system stop working and the electricity price of the power grid is at a high price. The stored third electrical energy is transmitted to the DC bus to charge the battery and the electric vehicle.

Preferably, the central energy management system is also used to control the photovoltaic system and/or the wind power system when the photovoltaic system and/or the wind power system is working and the electricity price of the power grid is at a high price. The first electrical energy and/or the second electrical energy is transmitted to the DC bus to charge the battery and the electric vehicle.

Preferably, the integrated charging and replacing power station system further includes an intelligent terminal;

The smart terminal includes an eighth communication module, and through the first communication module and the eighth communication module, the smart terminal is communicatively connected to the central energy management system;

The intelligent terminal is used to send different control instructions to the central energy management system to control the central energy management system to generate corresponding instructions.

An integrated charge-and-replacement power exchange station, the integrated charge-and-replacement power exchange station includes any one of the foregoing charge-and-replacement integrated power station systems.

On the basis of conforming to the common knowledge in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain preferred examples of the present invention.

The positive progress effect of the present invention is that: the integrated charging and replacing power station system effectively combines solar energy, wind energy, energy storage and electrical energy from the power grid, on the one hand alleviates the pressure on the power grid, and on the other hand effectively uses the valley power resources to store It can charge the battery, improve the utilization rate of resources, and reasonably control and distribute the electric energy of the substation through the central energy management system, which improves the power efficiency of the substation.

BRIEF DESCRIPTION

FIG. 1 is a schematic structural diagram of a charging and replacing integrated power station system according to Embodiment 1 of the present invention.

detailed description

The present invention is further described by way of examples below, but does not limit the present invention to the scope of the described examples.

Example 1

As shown in FIG. 1, the charge-and-replace integrated power station system of this embodiment. The charging and replacing integrated power station system of this embodiment includes: DC bus 2, central energy management system 1, photovoltaic system, wind power system, energy storage system, bidirectional AC-DC module 9, power exchange system and fast charging DC-DC module 12 .

The DC bus 2 is used as a transmission channel for the electrical energy of the substation to realize the mutual transmission between multiple energy sources.

The DC bus 2 is electrically connected to a photovoltaic system, a wind power system, an energy storage system, a bidirectional AC-DC module 9, a power exchange system, and a fast charging DC-DC module 12, respectively.

The central energy management system 1 manages the distribution of electric energy of various systems and modules, controls the conversion of electric energy at different timings, and arranges the mutual conversion of electric energy reasonably. The central energy management system 1 includes a first communication module.

The photovoltaic system includes a photovoltaic panel 3 and a photovoltaic controller 4. The photovoltaic controller 4 includes a second communication module. Through the first communication module and the second communication module, the central energy management system 1 and the photovoltaic The controller 4 is communicatively connected.

The photovoltaic controller 4 is electrically connected to the DC bus 2, the photovoltaic panel 3 is used to receive solar energy, and transmit the solar energy to the photovoltaic controller 4.

The photovoltaic controller 4 is used to convert the solar energy into the first electrical energy, and the central energy management system 1 is used to send a first power transmission instruction to the photovoltaic controller 4, the photovoltaic controller 4 also It is used to transmit the first electrical energy to the DC bus 2 after receiving the first power transmission instruction.

The electrical energy of the substation includes the first electrical energy.

The wind power system includes a fan 5 and a fan controller 6. The wind turbine controller 6 includes a third communication module, and through the first communication module and the third communication module, the central energy management system 1 is communicatively connected to the wind turbine controller 6.

The fan controller 6 is electrically connected to the DC bus 2, the fan 5 is used to receive wind energy, and transmits the wind energy to the fan controller 6; the fan controller 6 is used to convert wind energy into For the second electrical energy, the central energy management system 1 is also used to send a second power transmission instruction to the wind turbine controller 6, and the wind turbine controller 6 is further used to receive the second power transmission instruction. The second electric energy is transmitted to the DC bus 2.

The electrical energy of the substation also includes the second electrical energy.

This embodiment uses the photovoltaic system and the wind power system to generate the first electrical energy and the second electrical energy, fully utilizes the self-heating resources, is green and environmentally friendly, and improves the energy utilization rate.

The energy storage system includes a bidirectional DC-DC charging module 7 and an energy storage battery 8. One bidirectional DC-DC charging module 7 can be connected to multiple energy storage batteries 8.

The bidirectional DC-DC charging module 7 includes a fourth communication module, and through the first communication module and the fourth communication module, the central energy management system 1 is communicatively connected to the bidirectional DC-DC charging module 7.

The bidirectional DC-DC charging module 7 is electrically connected to the DC bus 2.

The central energy management system 1 is also used to send an energy storage battery charging instruction to the bidirectional DC-DC charging module 7, and the bidirectional DC-DC charging module 7 is used to receive the energy storage battery charging instruction, Receive the electric energy of the substation on the DC bus 2, and charge the energy storage battery 8 through the electric energy of the substation.

The central energy management system 1 is also used to send an energy storage battery power transmission instruction to the bidirectional DC-DC charging module 7, and the bidirectional DC-DC charging module 7 is also used to receive the energy storage battery power transmission instruction , Transmitting the third electrical energy stored in the energy storage battery 8 to the DC bus 2.

The electrical energy of the substation also includes third electrical energy.

The energy storage battery 8 of this embodiment uses a retired power battery. The so-called retired power battery generally refers to that the power battery has been used in electric vehicles for 3 to 5 years, and the battery capacity is significantly reduced, which is not suitable for use on electric vehicles. . However, these power batteries contain a large number of toxic heavy metal elements such as mercury, cadmium, and lead. If they are discarded on the land, the pollution will be very serious in a few decades. Therefore, recycling these retired power batteries, as an energy storage battery 8, not only protects the environment, but also creates surplus value and saves national energy.

The bidirectional AC-DC module 9 includes a fifth communication module, and through the first communication module and the fifth communication module, the central energy management system 1 is communicatively connected to the bidirectional AC-DC module 9; the bidirectional AC -The DC module 9 is also used to adjust the working voltage of the DC bus 2, the working voltage ranges from 1000V to 1500V.

The bidirectional AC-DC module 9 is electrically connected to the DC bus 2 and the power grid, respectively.

The central energy management system 1 is also used to send a grid power receiving instruction to the bidirectional AC-DC module 9, and the bidirectional AC-DC module 9 is used to receive alternating current from the grid after receiving the grid electrical energy receiving command, And the 380V alternating current on the power grid is converted into fourth electrical energy and transmitted to the DC bus 2.

The electrical energy of the substation also includes fourth electrical energy.

The central energy management system 1 is also used when the power of the substation on the DC bus 2 exceeds a preset first threshold, the number of charged electric vehicles is less than the second threshold, and the number of battery 11 is less than At the third threshold, the grid power feedback command is sent to the bidirectional AC-DC module 9, and the bidirectional AC-DC module 9 is also used to transfer all the power on the DC bus 2 after receiving the grid power feedback command. The electrical energy of the exchange station is converted into alternating current and fed back to the power grid, saving national energy.

The power exchange system includes a DC-DC charging module 10 and a power exchange battery 11; the DC-DC charging module 10 is connected one-to-one with the power exchange battery 11, and the integrated charging and replacement power station system includes a plurality of DC-DC charging modules 10, DC- The working power of the DC charging module 10 is 20 kilowatts.

The DC-DC charging module 10 includes a sixth communication module, and through the first communication module and the sixth communication module, the central energy management system 1 is in communication connection with the DC-DC charging module 10;

The DC-DC charging module 10 is electrically connected to the DC bus 2.

The central energy management system 1 is further used to send a battery-changing battery charging instruction to the DC-DC charging module 10, and the DC-DC charging module 10 is used to receive a battery after receiving the battery-changing battery charging instruction. The power of the power exchange station on the DC bus 2, and the power exchange battery 11 is charged by the power of the power exchange station.

The fast charging DC-DC module 12 includes a seventh communication module, and through the first communication module and the seventh communication module, the central energy management system 1 is communicatively connected to the fast charging DC-DC module 12.

The fast-charging DC-DC module 12 is electrically connected to the DC bus 2; the charging power of the fast-charging DC-DC module 12 of this embodiment is 350 kW, and the fast-charging DC-DC module 12 is used to directly convert the DC power into electric Charging the car makes the working voltage fluctuate little and the charging is stable.

The central energy management system 1 is also used to send a fast charge instruction to the fast charge DC-DC module 12, and the fast charge DC-DC module 12 is used to receive the direct current after receiving the fast charge instruction The power of the power exchange station on the bus 2 and the electric vehicle is charged by the power of the power exchange station.

The integrated charging-and-replacement power station system of this embodiment implements a combined operation mode of charging and replacement. Motor vehicle users can select different charging and replacement methods according to their own needs, which improves the user experience.

The charge-and-exchange integrated power exchange system of this embodiment sets priorities for four types of power in the power of the power exchange, and the so-called priority is priority.

The first electric energy and the second electric energy have the highest priority. When the first electric energy and the second electric energy have surplus electric energy, they are used preferentially. Because the photovoltaic system and the wind power system are subject to natural conditions, they should try their best if they can work. Use the power generated by this system; the third power ranks second and the fourth power ranks third.

Normally, when the charge-replacement integrated power station is in a busy working state, that is, when the power consumption peaks and each power is sufficient, the central energy management system 1 controls the photovoltaic controller 4, the fan controller 6, and the bidirectional DC -The DC charging module 7 and the bidirectional AC-DC module 9 transmit the first electrical energy, the second electrical energy, the third electrical energy and the fourth electrical energy to the DC bus 2 to charge the battery 11 and the electric vehicle.

The effective combination of multiple energy sources eases the pressure on the power grid.

In order to make full use of the trough resources, the central energy management system 1 exchanges each of the electrical energy in the power station according to the photovoltaic system, the operation of the wind power system, the high and low price of the grid voltage, the number of electric vehicles to be charged, and the number of battery replacements 11 To control the power transmission direction of various systems and modules.

specific:

The central energy management system 1 is used when the photovoltaic system and/or the wind power system is in operation, the electricity price of the power grid is at a low price, the number of electric vehicles to be charged is less than the second threshold, and the number of battery replacement cells 11 is less than At the third threshold, the photovoltaic system and/or the wind power system are controlled to transmit the first electrical energy and/or the second electrical energy to the DC bus 2 to charge the energy storage battery 8.

The central energy management system 1 is also used when the photovoltaic system and the wind power system stop working, the electricity price of the power grid is at a low price, the number of electric vehicles to be charged is less than the second threshold, and the number of replacement batteries 11 is less than At the third threshold, the bidirectional AC-DC module 9 is controlled to transmit the fourth electrical energy to the DC bus 2 to charge the energy storage battery 8.

The use of energy storage battery 8 effectively achieves peak-shaving and valley-filling, reducing operating costs.

The central energy management system 1 is also used to control the bidirectional DC-DC charging module 7 to store the energy storage battery 8 when the photovoltaic system and the wind power system stop working and the electricity price of the power grid is at a high price The third electric energy is transmitted to the DC bus 2 to charge the battery 11 and the electric vehicle.

The central energy management system 1 is also used to control the photovoltaic system and/or the wind power system when the photovoltaic system and/or the wind power system are operating and the electricity price of the power grid is at a high price. The electrical energy and/or the second electrical energy is transmitted to the DC bus 2 to charge the battery 11 and the electric vehicle.

When the first electrical energy, the second electrical energy, and the third electrical energy are in surplus, they are used to charge the battery 11 and the electric vehicle, saving national resources.

In addition, when the national grid fails, using the first electrical energy, the second electrical energy, and the third electrical energy can also maintain the operation of the substation.

In this embodiment, the integrated charging and replacing power station system further includes an intelligent terminal 13 that includes an eighth communication module. Through the first communication module and the eighth communication module, the intelligent terminal 13 The central energy management system 1 communication connection;

The intelligent terminal 13 is used to send different control instructions to the central energy management system 1 to control the central energy management system 1 to generate corresponding instructions.

The smart terminal 13 is also used to set the first threshold, the second threshold, and the third threshold. Such intelligent man-machine control is more convenient for the operation of the power station administrator and improves the user experience.

The charge-replacement integrated power station system effectively combines solar energy, wind energy, energy storage and electrical energy from the power grid, on the one hand alleviates the pressure on the power grid, on the other hand effectively uses valley power resources to charge energy storage batteries and improve the resource Utilization rate, and reasonable control and distribution of electric energy of the substation through the central energy management system, which improves the power efficiency of the substation.

Example 2

This embodiment is an integrated charging and replacement power station, and the integrated charging and replacement power station includes the integrated charging and replacement power station system in Embodiment 1.

The integrated charge-replacement power station of this embodiment effectively combines light energy, wind energy, electrical energy, and energy storage together, improving the utilization rate of natural energy, making full use of the valley resources to charge the energy storage battery, and improving the valley utilization rate. It also provides the operation mode of power replacement and fast charging, which improves the utilization rate of the integrated charging and replacement power station, thereby increasing the turnover of the integrated charging and replacement power station.

Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that these are only examples, and various changes or modifications may be made to these embodiments without departing from the principle and essence of the present invention. modify. Therefore, the protection scope of the present invention is defined by the appended claims.

Claims (19)

An integrated charging and replacement power station system, characterized in that the integrated charging and replacement power station system includes: a DC bus, a photovoltaic system, a wind power system, and a central energy management system; The DC bus is electrically connected to the photovoltaic system and the wind power system, respectively; The DC bus is used as a power transmission channel of the substation; The central energy management system includes a first communication module through which the central energy management system is in communication with the photovoltaic system and the wind power system, respectively; The photovoltaic system is used to convert solar energy into first electrical energy, the central energy management system is used to send a first power transmission instruction to the photovoltaic system, and the photovoltaic system is also used to receive the first power transmission After the instruction, the first electrical energy is transmitted to the DC bus; The wind power system is used to convert wind energy into second electrical energy, the central energy management system is also used to send a second power transmission instruction to the wind power system, and the wind power system is also used to receive the second power transmission After the electrical instruction, the second electrical energy is transmitted to the DC bus; The electrical energy of the substation includes the first electrical energy and the second electrical energy. The system of claim 1, wherein the photovoltaic system includes a photovoltaic panel and a photovoltaic controller; The photovoltaic controller includes a second communication module, and through the first communication module and the second communication module, the central energy management system is communicatively connected to the photovoltaic controller; The photovoltaic controller is electrically connected to the DC bus; The photovoltaic panel is used to receive solar energy and transmit the solar energy to the photovoltaic controller; The photovoltaic controller is used to convert the solar energy into the first electrical energy and transmit the first electrical energy to the DC bus according to the first power transmission instruction. The integrated charging-and-replacement substation system according to at least one of claims 1-2, wherein the wind power system includes a fan and a fan controller; The wind turbine controller includes a third communication module, and through the first communication module and the third communication module, the central energy management system is communicatively connected to the wind turbine controller; The fan controller is electrically connected to the DC bus; The fan is used to receive wind energy and transmit the wind energy to the fan controller; The fan controller converts the wind energy into the second electrical energy, and transmits the second electrical energy to the DC bus according to the second power transmission instruction. The integrated charge-and-exchange power plant system according to at least one of claims 1 to 3, wherein the integrated charge-and-exchange power plant system further includes an energy storage system; The energy storage system includes a bidirectional DC-DC charging module and an energy storage battery; The bidirectional DC-DC charging module includes a fourth communication module, and through the first communication module and the fourth communication module, the central energy management system is communicatively connected to the bidirectional DC-DC charging module; The bidirectional DC-DC charging module is electrically connected to the DC bus; The central energy management system is also used to send an energy storage battery charging instruction to the bidirectional DC-DC charging module. The bidirectional DC-DC charging module is used to receive the energy storage battery charging instruction after receiving the energy storage battery charging instruction. The electric energy of the substation on the DC bus, and the energy storage battery is charged by the electric energy of the substation. The system of claim 4, wherein the central energy management system is further used to send an energy storage battery power transmission instruction to a bidirectional DC-DC charging module, the bidirectional DC-DC charging module It is also used to transmit the third electrical energy stored in the energy storage battery to the DC bus after receiving the power transmission instruction of the energy storage battery; The electrical energy of the substation also includes the third electrical energy. The integrated charge-and-exchange power station system according to at least one of claims 1 to 5, wherein the integrated charge-and-exchange power station system further includes a bidirectional AC-DC module; The bidirectional AC-DC module includes a fifth communication module, and through the first communication module and the fifth communication module, the central energy management system is communicatively connected to the bidirectional AC-DC module; The bidirectional AC-DC module is electrically connected to the DC bus and the power grid respectively; The central energy management system is also used to send a grid power receiving instruction to the bidirectional AC-DC module, the bidirectional AC-DC module is used to receive alternating current from the grid after receiving the grid power receiving instruction, and Converting the alternating current into fourth electrical energy and transmitting it to the direct current bus; The electrical energy of the substation also includes the fourth electrical energy. The system of claim 6, wherein the central energy management system is further used to send a grid power feedback command to the bidirectional AC-DC module, and the bidirectional AC-DC module is also used After receiving the power grid power feedback command, the power of the substation on the DC bus is converted into AC power and fed back to the power grid. The integrated charge-and-exchange power station system according to at least one of claims 1-7, wherein the integrated charge-and-exchange power station system further includes a power exchange system; The power exchange system includes a DC-DC charging module and a power exchange battery; The DC-DC charging module includes a sixth communication module, and through the first communication module and the sixth communication module, the central energy management system is communicatively connected to the DC-DC charging module; The DC-DC charging module is electrically connected to the DC bus; The central energy management system is also used to send a battery-changing battery charging instruction to the DC-DC charging module, and the DC-DC charging module is used to receive the DC bus after receiving the battery-changing battery charging instruction The power of the power exchange station on the battery, and the power exchange battery charges the power exchange battery. The integrated charge-and-exchange power station system according to at least one of claims 1-8, wherein the integrated charge-and-exchange power station system further includes a fast charge DC-DC module; The fast charging DC-DC module includes a seventh communication module, and through the first communication module and the seventh communication module, the central energy management system is in communication connection with the fast charging DC-DC module; The fast charging DC-DC module is electrically connected to the DC bus; The central energy management system is also used to send a fast charge instruction to the fast charge DC-DC module, and the fast charge DC-DC module is used to receive the fast charge on the DC bus after receiving the fast charge instruction The electric power of the substation, and the electric vehicle is charged by the electric power of the substation. The system of at least one of claims 8-9, wherein the charging power of the DC-DC charging module is 20 kW. The system of at least one of claims 9-10, wherein the charging power of the fast charging DC-DC module is 350 kilowatts. The integrated charging and replacing substation system according to at least one of claims 7 to 11, wherein the central energy management system is further used when the electric energy of the substation on the DC bus exceeds a preset A threshold value, when the number of charged electric vehicles is less than the second threshold value, and the number of battery replacements is less than the third threshold value, the bidirectional AC-DC module controls the conversion of the power on the DC bus to the AC power feedback to The grid. The integrated charging-and-replacement substation system according to at least one of claims 6-12, wherein the bidirectional AC-DC module is further used to adjust the operating voltage of the DC bus, and the operating voltage range is 1000V～1500V. The integrated charge-and-swap power station system according to at least one of claims 1-13, wherein the central energy management system is also used when the photovoltaic system and/or the wind power system is working and the electricity price of the power grid When the number of electric vehicles that are at a low price and are charged is less than the second threshold and the number of battery replacements is less than the third threshold, control the photovoltaic system and/or the wind power system to control the first electrical energy and/or all The second electrical energy is transmitted to the DC bus to charge the energy storage battery. The integrated charging and replacing power station system according to at least one of claims 6-14, wherein the central energy management system is also used when the photovoltaic system and the wind power system stop working and the electricity price of the power grid is at When the number of low-priced, charged electric vehicles is less than the second threshold and the number of battery replacements is less than the third threshold, the bidirectional AC-DC module is controlled to transmit the fourth electrical energy to the DC bus for storage Can charge the battery. The integrated charging-and-replacement substation system according to at least one of claims 5 to 15, wherein the central energy management system is also used when the photovoltaic system and the wind power system stop working and the electricity price of the power grid is at When the price is high, the bidirectional DC-DC charging module is controlled to transmit the third electric energy stored in the energy storage battery to the DC bus to charge the battery and the electric vehicle. The integrated charging-and-replacement substation system according to claim 1, wherein the central energy management system is also used when the photovoltaic system and/or the wind power system is working, and When the electricity price is at a high price, the photovoltaic system and/or the wind power system are controlled to transmit the first electrical energy and/or the second electrical energy to the DC bus to charge the battery and the electric vehicle. The integrated charge-and-exchange power station system according to at least one of claims 1-17, wherein the integrated charge-and-exchange power station system further includes an intelligent terminal; The smart terminal includes an eighth communication module, and through the first communication module and the eighth communication module, the smart terminal is communicatively connected to the central energy management system; The intelligent terminal is used to send different control instructions to the central energy management system to control the central energy management system to generate corresponding instructions. An integrated charging-and-exchange power station, characterized in that the integrated charging-and-exchange power station includes at least one of claims 1-18.

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