Control method of optical storage and charging system and control device of optical storage and charging system

Abstract

The application provides a control method of a light storage and charging system and a control device of the light storage and charging system. The light storage and charging system comprises a photovoltaic assembly, a target vehicle, a power grid and an energy storage device which are communicatively connected. The method comprises the following steps: obtaining a target power carbon emission coefficient, a historical power carbon emission coefficient and a photovoltaic power generation power; in the case that the photovoltaic power generation power is greater than or equal to a power threshold, controlling the photovoltaic assembly to supply power to the target vehicle; in the case that the photovoltaic power generation power is less than the power threshold and the target vehicle has a charging demand, according to the size relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, controlling the photovoltaic assembly to supply power to the target vehicle in a first power supply mode; in the case that the target vehicle has no charging demand, according to the size relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, controlling the photovoltaic assembly to supply power in a second power supply mode. The method solves the problem that the carbon reduction potential of the light storage and charging system cannot be maximized in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of power systems, in particular to a control method of a light storage charging system, a control device of the light storage charging system, a computer readable storage medium and a power system. BACKGROUND

[0002] Excessive carbon emissions will cause climate change and bring adverse effects to human society, therefore, how to reduce carbon emissions has become a problem to be solved. SUMMARY

[0003] The main purpose of the present application is to provide a control method of a light storage charging system, a control device of the light storage charging system, a computer readable storage medium and a power system, to at least solve the problem that the carbon reduction potential of the light storage charging system cannot be maximized in the prior art.

[0004] According to an aspect of the present application, a control method of a light storage charging system is provided, the light storage charging system comprising a photovoltaic assembly, a target vehicle, a power grid and an energy storage device which are communicatively connected, wherein the method comprises: obtaining a target power carbon emission coefficient, a historical power carbon emission coefficient and a photovoltaic power generation power, wherein the target power carbon emission coefficient is a power carbon emission coefficient corresponding to the current time of the power grid, the historical power carbon emission coefficient comprises a plurality of power carbon emission coefficients of the power grid within a predetermined time length, and the photovoltaic power generation power is a power generation power corresponding to the current time of the photovoltaic assembly; determining whether the photovoltaic power generation power is greater than or equal to a power threshold value, in the case that the photovoltaic power generation power is greater than or equal to the power threshold value, controlling the photovoltaic assembly to supply power to the target vehicle; in the case that the photovoltaic power generation power is less than the power threshold value, determining whether the target vehicle has a charging demand; in the case that the target vehicle has the charging demand, determining a first power supply mode of the target vehicle according to the size relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and controlling to supply power to the target vehicle in the first power supply mode, wherein the first power supply mode comprises that the power grid supplies power to the target vehicle or the energy storage device supplies power to the target vehicle; in the case that the target vehicle does not have the charging demand, determining a second power supply mode according to the size relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and controlling to supply power in the second power supply mode, wherein the second power supply mode comprises that the power grid supplies power to the energy storage device or the energy storage device supplies power to the power grid.

[0005] Optionally, in the case that the target vehicle has the charging demand, according to the size relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, a first power supply mode of the target vehicle is determined, and the first power supply mode is controlled to supply power to the target vehicle, including: sorting the historical power carbon emission coefficients, and performing grouping processing on the sorted historical power carbon emission coefficients to obtain a first interval, a second interval and a third interval, wherein the number of power carbon emission coefficients in the first interval, the second interval and the third interval is equal, the left end point value of the first interval is less than the left end point value of the second interval, and the left end point value of the second interval is less than the left end point value of the third interval; in the case that the target power carbon emission coefficient is greater than the left end point value of the first interval and less than the right end point value of the first interval, it is determined that the first power supply mode is that the power grid supplies power to the target vehicle, and the power grid is controlled to supply power to the target vehicle; in the case that the target power carbon emission coefficient is greater than the left end point value of the third interval and less than the right end point value of the third interval, it is determined that the first power supply mode is that the energy storage device supplies power to the target vehicle, and the energy storage device is controlled to supply power to the target vehicle.

[0006] Optionally, in the case that the target vehicle has the charging demand, according to the size relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, a first power supply mode of the target vehicle is determined, and the first power supply mode is controlled to supply power to the target vehicle, including: sorting the historical power carbon emission coefficients, and performing grouping processing on the sorted historical power carbon emission coefficients to obtain a first interval, a second interval and a third interval, wherein the number of power carbon emission coefficients in the first interval, the second interval and the third interval is equal, the left end point value of the first interval is less than the left end point value of the second interval, and the left end point value of the second interval is less than the left end point value of the third interval; in the case that the target power carbon emission coefficient is greater than the left end point value of the first interval and less than the right end point value of the first interval, it is determined that the first power supply mode is that the power grid supplies power to the target vehicle, and the power grid is controlled to supply power to the target vehicle; in the case that the target power carbon emission coefficient is greater than the left end point value of the third interval and less than the right end point value of the third interval, it is determined that the first power supply mode is that the energy storage device supplies power to the target vehicle, and the energy storage device is controlled to supply power to the target vehicle.

[0007] Optionally, after controlling the energy storage device to supply power to the target device, where the target device is the power grid or the target vehicle, the method further includes: obtaining a first power level of the energy storage device after it supplies power to the target device; determining whether the first power level is less than a first power level threshold, where the first power level threshold is the minimum allowable discharge value of the energy storage device; if the first power level is less than the first power level threshold and the target device is the power grid, controlling the power grid to supply power to the energy storage device until the power level of the energy storage device reaches a second power level threshold, wherein the second power level threshold is greater than the first power level threshold; if the first power level is less than the first power level threshold and the target device is the target vehicle, controlling the power grid to supply power to the target vehicle until the charging demand of the target vehicle is met.

[0008] Optionally, when the photovoltaic power generation is greater than or equal to the power threshold, after controlling the photovoltaic module to supply power to the target vehicle, the method further includes: obtaining the remaining electrical energy of the photovoltaic module after supplying power to the target vehicle; when the remaining electrical energy is greater than 0, determining a third power supply method based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and controlling the third power supply method to supply power, wherein the third power supply method includes the photovoltaic module supplying power to the grid or the grid supplying power to the energy storage device.

[0009] Optionally, a third power supply method is determined based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient, including: sorting the historical electricity carbon emission coefficients and grouping the sorted historical electricity carbon emission coefficients to obtain an eighth interval, a ninth interval, and a tenth interval, wherein the number of electricity carbon emission coefficients in the eighth interval, the ninth interval, and the tenth interval are equal, the left endpoint value of the eighth interval is less than the left endpoint value of the ninth interval, and the left endpoint value of the ninth interval is less than the left endpoint value of the tenth interval; if the target electricity carbon emission coefficient is greater than or equal to the left endpoint value of the tenth interval and less than or equal to the right endpoint value of the tenth interval, the third power supply method is determined to be that the photovoltaic module supplies power to the grid, and the photovoltaic module supplies power to the grid; if the target electricity carbon emission coefficient is greater than or equal to the left endpoint value of the eighth interval and less than or equal to the right endpoint value of the eighth interval, the third power supply method is determined to be that the photovoltaic module supplies power to the energy storage device, and the photovoltaic module supplies power to the energy storage device.

[0010] Optionally, after controlling the photovoltaic module to supply power to the energy storage device, the method further includes: obtaining a second power level of the energy storage device; determining whether the second power level is greater than a second power level threshold, the second power level threshold being the maximum value that the energy storage device is allowed to charge; and controlling the photovoltaic module to supply power to the grid if the second power level is greater than the second power level threshold.

[0011] According to another aspect of this application, a control device for a photovoltaic-storage-charging system is provided. The system includes a photovoltaic module, a target vehicle, a power grid, and an energy storage device connected in communication. The device includes: a first acquisition unit, configured to acquire a target power carbon emission coefficient, historical power carbon emission coefficients, and photovoltaic power generation, wherein the target power carbon emission coefficient is the power carbon emission coefficient of the power grid at the current moment, the historical power carbon emission coefficients include multiple power carbon emission coefficients of the power grid within a predetermined time period, and the photovoltaic power generation is the power generation of the photovoltaic module at the current moment; a first determination unit, configured to determine whether the photovoltaic power generation is greater than or equal to a power threshold, and if the photovoltaic power generation is greater than or equal to the power threshold, control the photovoltaic module to supply power to the target vehicle; and a second determination unit, configured to determine whether the photovoltaic power generation is less than the target power carbon emission coefficient. Under the aforementioned power threshold, it is determined whether the target vehicle has a charging demand; a first control unit is configured to, when the target vehicle has the charging demand, determine a first power supply method for the target vehicle based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and control the first power supply method to supply power to the target vehicle, wherein the first power supply method includes the grid supplying power to the target vehicle or the energy storage device supplying power to the target vehicle; a second control unit is configured to, when the target vehicle does not have the charging demand, determine a second power supply method based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and control the second power supply method to supply power, wherein the second power supply method includes the grid supplying power to the energy storage device or the energy storage device supplying power to the grid.

[0012] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform any of the methods described.

[0013] According to another aspect of this application, an electric power system is provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to execute any of the methods described by the computer program.

[0014] By applying the technical solution of this application, firstly, the target power carbon emission coefficient, historical power carbon emission coefficient, and photovoltaic power generation are obtained; when the photovoltaic power generation is greater than or equal to a power threshold, the photovoltaic modules are controlled to supply power to the target vehicle; then, when the photovoltaic power generation is less than the power threshold and the target vehicle has charging needs, the first power supply method is controlled to supply power to the target vehicle based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient; finally, when the target vehicle does not have charging needs, the second power supply method is controlled to supply power based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient. By introducing the power carbon emission coefficient and based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, the charging or discharging of photovoltaic modules, target vehicles, the power grid, and energy storage devices in the photovoltaic-storage-charging system can be controlled under different conditions. Because the power carbon emission coefficient is considered, the carbon emissions of the photovoltaic-storage-charging system can be reduced, solving the problem that the existing technology cannot maximize the carbon reduction potential of the photovoltaic-storage-charging system. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 A hardware structure block diagram of a mobile terminal for performing a control method for an optical storage and charging system according to an embodiment of this application is shown.

[0017] Figure 2 A schematic flowchart of a control method for an optical energy storage and charging system according to an embodiment of this application is shown.

[0018] Figure 3 A detailed flowchart of a control method for an optical energy storage and charging system according to an embodiment of this application is shown.

[0019] Figure 4 A structural block diagram of a control device for an optical energy storage and charging system according to an embodiment of this application is shown.

[0020] The above figures include the following reference numerals:

[0021] 102. Processor; 104. Memory; 106. Transmission device; 108. Input / output device. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] As described in the background section, the existing technology cannot maximize the carbon reduction potential of photovoltaic energy storage and charging systems. To solve the above problems, embodiments of this application provide a control method for a photovoltaic energy storage and charging system, a control device for a photovoltaic energy storage and charging system, a computer-readable storage medium, and a power system.

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0027] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a control method of an optical storage and charging system according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1The different configurations shown.

[0028] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the control method of the optical storage and charging system in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0029] This embodiment provides a control method for an optical storage and charging system that runs on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0030] A photovoltaic-storage-charging system includes photovoltaic modules, a target vehicle, a power grid, and energy storage devices connected via communication. Figure 2 This is a flowchart of a control method for a photovoltaic energy storage and charging system according to an embodiment of this application. Figure 2 As shown, the method includes the following steps:

[0031] Step S201: Obtain the target power carbon emission coefficient, historical power carbon emission coefficient and photovoltaic power generation power, wherein the target power carbon emission coefficient is the power carbon emission coefficient of the power grid at the current moment, the historical power carbon emission coefficient includes multiple power carbon emission coefficients of the power grid within a predetermined time period, and the photovoltaic power generation power is the power generation power of the photovoltaic module at the current moment.

[0032] Specifically, the carbon emission factor of electricity refers to the amount of carbon dioxide emissions produced per unit of electricity generated, usually expressed as the amount of carbon dioxide emissions (e.g., kilograms) produced per unit of electricity (e.g., kilowatt-hours). Common units of measurement are grams per kilowatt-hour or kilograms per megawatt-hour. The carbon emission factor of electricity is closely related to factors such as the method of electricity generation, the energy structure, and the efficiency of power equipment. Power plants using fossil fuels (such as coal, oil, and natural gas) have higher carbon emission factors, while those using renewable energy sources (such as hydropower, wind power, and solar power) have lower carbon emission factors. Photovoltaic power generation refers to the ability of a photovoltaic cell module or photovoltaic power generation system to convert solar radiation energy into electrical energy per unit of time, usually measured in watts, representing the amount of electrical energy generated per second. Photovoltaic power generation depends on factors such as sunlight intensity, the wavelength of solar radiation, and the efficiency of photovoltaic cell modules.

[0033] Step S202: Determine whether the photovoltaic power generation is greater than or equal to the power threshold. If the photovoltaic power generation is greater than or equal to the power threshold, control the photovoltaic module to supply power to the target vehicle.

[0034] Specifically, the target vehicles mentioned above are electric vehicles with charging needs. When the photovoltaic power generation is greater than or equal to the aforementioned power threshold, it indicates that the photovoltaic modules are generating sufficient power, and the photovoltaic modules can prioritize supplying power to electric vehicles.

[0035] Step S203: If the photovoltaic power generation is less than the above power threshold, determine whether the target vehicle has a charging requirement.

[0036] Specifically, when the photovoltaic power generation is greater than or equal to the aforementioned power threshold, it indicates that the photovoltaic module is not generating enough power and cannot provide electricity to other devices.

[0037] Step S204: When the target vehicle has the above-mentioned charging demand, the first power supply method of the target vehicle is determined according to the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the first power supply method is used to supply power to the target vehicle. The first power supply method includes the power grid supplying power to the target vehicle or the energy storage device supplying power to the target vehicle.

[0038] Specifically, the aforementioned energy storage device can be an energy storage battery. When the target vehicle has the aforementioned charging needs, since the photovoltaic modules cannot provide electricity to the target vehicle, other power generation equipment must be used, such as the power grid and energy storage devices. Because the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the corresponding first power supply method can be selected based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient.

[0039] Step S205: If the target vehicle does not have the above-mentioned charging demand, a second power supply method is determined based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the second power supply method is used to supply power. The second power supply method includes the power grid supplying power to the energy storage device or the energy storage device supplying power to the power grid.

[0040] Specifically, if the target vehicle does not have the aforementioned charging requirements, there is no need to charge the target vehicle, and electrical energy can flow between other devices, such as the power grid and energy storage devices. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, a corresponding second power supply method can be selected based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient.

[0041] This embodiment first obtains the target carbon emission coefficient, historical carbon emission coefficient, and photovoltaic power generation. When the photovoltaic power generation is greater than or equal to a power threshold, the photovoltaic modules are controlled to supply power to the target vehicle. Then, when the photovoltaic power generation is less than the power threshold and the target vehicle has charging needs, a first power supply method is used to supply power to the target vehicle based on the relationship between the target and historical carbon emission coefficients. Finally, when the target vehicle does not have charging needs, a second power supply method is used based on the relationship between the target and historical carbon emission coefficients. By introducing the carbon emission coefficient and considering its relationship with the historical coefficient, the charging or discharging of the photovoltaic modules, target vehicle, power grid, and energy storage devices within the photovoltaic-storage-charging system can be controlled under different conditions. Because the carbon emission coefficient is considered, the carbon emissions of the photovoltaic-storage-charging system can be reduced, solving the problem in existing technologies where the carbon reduction potential of the photovoltaic-storage-charging system cannot be maximized.

[0042] In specific implementation, step S204 can be achieved through the following steps: Step S2041, sort the historical electricity carbon emission coefficients, and group the sorted historical electricity carbon emission coefficients to obtain a first interval, a second interval, and a third interval, wherein the number of electricity carbon emission coefficients in the first interval, the second interval, and the third interval is equal, the left endpoint value of the first interval is less than the left endpoint value of the second interval, and the left endpoint value of the second interval is less than the left endpoint value of the third interval; Step S2042, when the target electricity carbon emission coefficient is greater than the left endpoint value of the first interval and less than the right endpoint value of the first interval, determine that the first power supply method is the power grid supplying power to the target vehicle, and control the power grid to supply power to the target vehicle; Step S2043, when the target electricity carbon emission coefficient is greater than the left endpoint value of the third interval and less than the right endpoint value of the third interval, determine that the first power supply method is the energy storage device supplying power to the target vehicle, and control the energy storage device to supply power to the target vehicle. This method divides historical electricity carbon emission coefficients into zones to determine multiple intervals. By determining which interval the target electricity carbon emission coefficient falls into, the method compares the target electricity carbon emission coefficient with the historical electricity carbon emission coefficient, further determining the accurate first power supply method and further controlling the adoption of the first power supply method.

[0043] Specifically, the historical electricity carbon emission coefficients can be sorted from largest to smallest or from smallest to largest. The first interval represents the lower third of the historical electricity carbon emission coefficients, the second interval represents the middle third, and the third interval represents the upper third. If the target electricity carbon emission coefficient is greater than the left endpoint of the first interval but less than the right endpoint, it indicates that the target electricity carbon emission coefficient is in the lower third. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the grid is controlled to supply power to the target vehicle. If the target electricity carbon emission coefficient is greater than the left endpoint of the third interval but less than the right endpoint, it indicates that the target electricity carbon emission coefficient is in the upper third. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the grid is controlled to supply power to the target vehicle.

[0044] To further determine the accurate second power supply method and further control its adoption, step S205 of this application can be implemented through the following steps: Step S2051, sorting the historical electricity carbon emission coefficients and grouping the sorted historical electricity carbon emission coefficients to obtain a fourth interval, a fifth interval, a sixth interval, and a seventh interval, wherein the number of electricity carbon emission coefficients in the fourth interval, the fifth interval, the sixth interval, and the seventh interval is equal, the left endpoint value of the fourth interval is less than the left endpoint value of the fifth interval, and the left endpoint value of the fifth interval is less than the left endpoint value of the sixth interval. The left endpoint value of the sixth interval is less than the left endpoint value of the seventh interval; Step S2052, if the target power carbon emission coefficient is greater than the left endpoint value of the fourth interval and less than the right endpoint value of the sixth interval, determine that the second power supply mode is the power grid supplying power to the energy storage device, and control the power grid to supply power to the energy storage device; Step S2053, if the target power carbon emission coefficient is greater than the left endpoint value of the seventh interval and less than the right endpoint value of the seventh interval, determine that the second power supply mode is the energy storage device supplying power to the power grid, and control the energy storage device to supply power to the power grid.

[0045] Specifically, the historical electricity carbon emission coefficients can be sorted from largest to smallest or from smallest to largest. The fourth, fifth, and sixth intervals represent the lower three-quarters of the historical electricity carbon emission coefficients, and the seventh interval represents the upper one-quarter. If the target electricity carbon emission coefficient is greater than the left endpoint of the fourth interval but less than the right endpoint of the sixth interval, it indicates that the target electricity carbon emission coefficient is in the lower three-quarters interval. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the grid is controlled to supply power to the energy storage device. If the target electricity carbon emission coefficient is greater than the left endpoint of the seventh interval but less than the right endpoint of the seventh interval, it indicates that the target electricity carbon emission coefficient is in the upper one-quarter interval. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the energy storage device is controlled to supply power to the grid.

[0046] After controlling the energy storage device to supply power to the target device (either the power grid or the target vehicle), step S205 can be implemented in other ways, such as: step S206, obtaining the first power level of the energy storage device after it supplies power to the target device; step S207, determining whether the first power level is less than a first power threshold, where the first power threshold is the minimum allowable discharge value of the energy storage device; step S208, if the first power level is less than the first power threshold and the target device is the power grid, controlling the power grid to supply power to the energy storage device until the energy level of the energy storage device reaches a second power threshold, where the second power threshold is greater than the first power threshold; step S209, if the first power level is less than the first power threshold and the target device is the target vehicle, controlling the power grid to supply power to the target vehicle until the charging needs of the target vehicle are met. This method can adjust the charging and discharging mode according to the energy of the energy storage device, further reducing the carbon emissions of the photovoltaic-energy storage-charging system.

[0047] Specifically, in one embodiment, after controlling the energy storage device to supply power to the grid, due to energy consumption, the energy storage device may fall below the minimum allowable discharge value, i.e., the aforementioned first energy level, and the energy storage device can no longer supply power. In this case, the grid is then controlled to supply power to the energy storage device. In another embodiment, after controlling the energy storage device to supply power to the target vehicle, due to energy consumption, the energy storage device may fall below the minimum allowable discharge value, i.e., the aforementioned first energy level, and the energy storage device can no longer supply power. In this case, the grid is controlled to continue supplying power to the target vehicle.

[0048] In some embodiments, the step S202 described above can be implemented through the following steps: Step S2021, obtaining the remaining electrical energy of the photovoltaic module after it supplies power to the target vehicle; Step S2022, if the remaining electrical energy is greater than 0, determining a third power supply method based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and controlling the power supply to be carried out using the third power supply method, wherein the third power supply method includes the photovoltaic module supplying power to the grid or the grid supplying power to the energy storage device. This method, by determining the remaining power of the photovoltaic module, can further achieve precise control of the photovoltaic-energy storage-charging system.

[0049] Specifically, after the photovoltaic modules supply power to the target vehicle, it can be further determined whether the remaining power of the photovoltaic modules can continue to provide power. If the remaining power is greater than 0 and can continue to provide power, since the power emission coefficient of the photovoltaic modules supplying power to the energy storage device is greater than the power emission coefficient of the photovoltaic modules supplying power to the grid, a corresponding third power supply method can be selected based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient.

[0050] The above step S2022 can be implemented through the following steps: Step S20221, sort the above historical electricity carbon emission coefficients, and group the sorted historical electricity carbon emission coefficients to obtain the eighth interval, the ninth interval, and the tenth interval, wherein the number of electricity carbon emission coefficients in the eighth interval, the ninth interval, and the tenth interval are equal, the left endpoint value of the eighth interval is less than the left endpoint value of the ninth interval, and the left endpoint value of the ninth interval is less than the left endpoint value of the tenth interval; Step S20222, when the target electricity carbon emission coefficient is greater than or equal to the left endpoint value of the tenth interval and less than or equal to the right endpoint value of the tenth interval, determine that the third power supply method is the photovoltaic module supplying power to the grid, and control the photovoltaic module to supply power to the grid; Step S20223, when the target electricity carbon emission coefficient is greater than or equal to the left endpoint value of the eighth interval and less than or equal to the right endpoint value of the eighth interval, determine that the third power supply method is the photovoltaic module supplying power to the energy storage device, and control the photovoltaic module to supply power to the energy storage device. This method divides historical electricity carbon emission coefficients into zones to determine multiple intervals. By identifying which interval the target electricity carbon emission coefficient falls into, it compares the target electricity carbon emission coefficient with the historical electricity carbon emission coefficient, further determining the accurate third power supply method mentioned above, and further controlling the adoption of the third power supply method.

[0051] Specifically, the historical electricity carbon emission coefficients can be sorted from largest to smallest or from smallest to largest. The eighth interval can be the same as or different from the first interval; the ninth interval can be the same as or different from the second interval; and the tenth interval can be the same as or different from the third interval. The eighth interval represents the lower third of the historical electricity carbon emission coefficients, the ninth interval represents the middle third, and the tenth interval represents the upper third. When the target electricity carbon emission coefficient is greater than or equal to the left endpoint of the tenth interval and less than or equal to the right endpoint, it indicates that the target electricity carbon emission coefficient is in the upper third. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, and since the carbon emission coefficient of photovoltaic modules supplying power to the grid is greater than that of photovoltaic modules supplying power to energy storage devices, the supply of power from photovoltaic modules to the grid is controlled. When the target carbon emission coefficient is greater than the left endpoint of the eighth interval and less than the right endpoint of the eighth interval, it indicates that the target carbon emission coefficient is in the lower 1 / 3 interval. Since the carbon emission coefficient of grid charging is greater than the carbon emission coefficient of energy storage battery, and since the carbon emission coefficient of the photovoltaic module supplying power to the grid is greater than the carbon emission coefficient of the photovoltaic module supplying power to the energy storage device, the photovoltaic module is controlled to supply power to the energy storage device.

[0052] Following step S20223 above, the process can be further implemented through the following steps: Step S20224, obtaining the second power level of the energy storage device; Step S20225, determining whether the second power level is greater than a second power level threshold, where the second power level threshold is the maximum allowable charging value for the energy storage device; Step S20226, if the second power level is greater than the second power level threshold, controlling the photovoltaic module to supply power to the grid. This method, by determining the power level of the energy storage device after the photovoltaic module supplies power, changes the control mode of the photovoltaic-energy storage-charging system, further improving energy utilization.

[0053] Specifically, after the photovoltaic module charges the energy storage device, if the energy storage device is fully charged (i.e., the second power level is greater than the second power threshold), the excess photovoltaic power from the photovoltaic module will be supplied to the grid.

[0054] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the control method of the optical energy storage and charging system of this application will be described in detail below with reference to specific embodiments.

[0055] This embodiment relates to a specific control method for a photovoltaic energy storage and charging system, such as... Figure 3 As shown, it includes the following steps:

[0056] Step S1: Determine if there is photovoltaic power, i.e., whether the photovoltaic power generation of the photovoltaic module is sufficient. If yes, proceed to step S2; otherwise, proceed to step S3.

[0057] Step S2: Prioritize charging electric vehicles, determine the range of the target power carbon emission coefficient, and determine the destination of excess power according to the different ranges. If the target power carbon emission coefficient is in a low range, proceed to step S4; if the target power carbon emission coefficient is in a high range, proceed to step S5.

[0058] Step S3: Determine if the electric vehicle has a charging need. If it does, proceed to step S7; otherwise, proceed to step S8.

[0059] Step S4: Determine if the battery is fully charged, that is, determine if the energy storage device has sufficient power. If the battery is fully charged, proceed to step S5; if the battery is not fully charged, proceed to step S6.

[0060] Step S5: Control the power grid connection, that is, supply the excess photovoltaic power to the power grid;

[0061] Step S6: Provide power to the battery;

[0062] Step S7: Determine the range of the target power carbon emission coefficient. Based on the different ranges, determine different control methods. If the target power carbon emission coefficient is in the low range, execute step S9. If the target power carbon emission coefficient is in the high range, execute step S10.

[0063] Step S8: Determine the range of the target power carbon emission coefficient. Based on the different ranges, determine different control methods. If the target power carbon emission coefficient is in the low to medium range, execute step S12. If the target power carbon emission coefficient is in the extremely high range, execute step S13.

[0064] Step S9: Charge the electric vehicle using the power grid;

[0065] Step S10: Determine if the battery power is sufficient. If the power is insufficient, proceed to step S9; if the power is sufficient, proceed to step S11.

[0066] Step S11: Charge the electric vehicle using the battery;

[0067] Step S12: Charge the battery using the power grid;

[0068] Step S13: Determine if the battery power is sufficient. If it is insufficient, proceed to step S12; if it is sufficient, proceed to step S14.

[0069] Step S14: Utilize battery power to connect to the grid, i.e., control the energy storage device to supply power to the grid.

[0070] This application also provides a control device for an optical storage and charging system. It should be noted that the control device for the optical storage and charging system in this application can be used to execute the control method for the optical storage and charging system provided in this application. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0071] The control device for the optical energy storage and charging system provided in the embodiments of this application will be described below.

[0072] The aforementioned photovoltaic-storage-charging system includes photovoltaic modules, a target vehicle, a power grid, and energy storage devices connected via communication. Figure 4 This is a schematic diagram of the control device for an optical storage and charging system according to an embodiment of this application. Figure 4 As shown, the device includes:

[0073] The first acquisition unit 10 is used to acquire the target power carbon emission coefficient, the historical power carbon emission coefficient, and the photovoltaic power generation power. The target power carbon emission coefficient is the power carbon emission coefficient of the power grid at the current moment. The historical power carbon emission coefficient includes multiple power carbon emission coefficients of the power grid within a predetermined time period. The photovoltaic power generation power is the power generation power of the photovoltaic module at the current moment.

[0074] Specifically, the carbon emission factor of electricity refers to the amount of carbon dioxide emissions produced per unit of electricity generated, usually expressed as the amount of carbon dioxide emissions (e.g., kilograms) produced per unit of electricity (e.g., kilowatt-hours). Common units of measurement are grams per kilowatt-hour or kilograms per megawatt-hour. The carbon emission factor of electricity is closely related to factors such as the method of electricity generation, the energy structure, and the efficiency of power equipment. Power plants using fossil fuels (such as coal, oil, and natural gas) have higher carbon emission factors, while those using renewable energy sources (such as hydropower, wind power, and solar power) have lower carbon emission factors. Photovoltaic power generation refers to the ability of a photovoltaic cell module or photovoltaic power generation system to convert solar radiation energy into electrical energy per unit of time, usually measured in watts, representing the amount of electrical energy generated per second. Photovoltaic power generation depends on factors such as sunlight intensity, the wavelength of solar radiation, and the efficiency of photovoltaic cell modules.

[0075] The first determining unit 20 is used to determine whether the photovoltaic power generation is greater than or equal to a power threshold, and if the photovoltaic power generation is greater than or equal to the power threshold, control the photovoltaic module to supply power to the target vehicle.

[0076] Specifically, the target vehicles mentioned above are electric vehicles with charging needs. When the photovoltaic power generation is greater than or equal to the aforementioned power threshold, it indicates that the photovoltaic modules are generating sufficient power, and the photovoltaic modules can prioritize supplying power to electric vehicles.

[0077] The second determining unit 30 is used to determine whether the target vehicle has a charging requirement when the photovoltaic power generation is less than the aforementioned power threshold.

[0078] Specifically, when the photovoltaic power generation is greater than or equal to the aforementioned power threshold, it indicates that the photovoltaic module is not generating enough power and cannot provide electricity to other devices.

[0079] The first control unit 40 is configured to, when the target vehicle has the above-mentioned charging demand, determine the first power supply mode of the target vehicle based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and control the power supply to the target vehicle using the first power supply mode, wherein the first power supply mode includes the power grid supplying power to the target vehicle or the energy storage device supplying power to the target vehicle.

[0080] Specifically, the aforementioned energy storage device can be an energy storage battery. When the target vehicle has the aforementioned charging needs, since the photovoltaic modules cannot provide electricity to the target vehicle, other power generation equipment must be used, such as the power grid and energy storage devices. Because the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the corresponding first power supply method can be selected based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient.

[0081] The second control unit 50 is used to determine a second power supply method based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient when the target vehicle does not have the charging demand, and to control the power supply to be carried out using the second power supply method. The second power supply method includes the power grid supplying power to the energy storage device or the energy storage device supplying power to the power grid.

[0082] Specifically, if the target vehicle does not have the aforementioned charging requirements, there is no need to charge the target vehicle, and electrical energy can flow between other devices, such as the power grid and energy storage devices. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, a corresponding second power supply method can be selected based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient.

[0083] In this embodiment, the first acquisition unit acquires the target power carbon emission coefficient, the historical power carbon emission coefficient, and the photovoltaic power generation power. When the photovoltaic power generation power is greater than or equal to a power threshold, the first determination unit controls the photovoltaic modules to supply power to the target vehicle. When the photovoltaic power generation power is less than the power threshold and the target vehicle has charging needs, the second determination unit, based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, controls the first power supply method to supply power to the target vehicle. When the target vehicle does not have charging needs, the second control unit, based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, controls the second power supply method to supply power. By introducing the power carbon emission coefficient and considering the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, it is possible to control the charging or discharging of photovoltaic modules, the target vehicle, the power grid, and energy storage devices within the photovoltaic-storage-charging system under different conditions. Because the power carbon emission coefficient is considered, the carbon emissions of the photovoltaic-storage-charging system can be reduced, solving the problem in the prior art that the carbon reduction potential of the photovoltaic-storage-charging system cannot be maximized.

[0084] In specific implementation, the first control unit includes a first sorting module, a first determining module, and a second determining module. The first sorting module is used to sort the historical electricity carbon emission coefficients and group the sorted historical electricity carbon emission coefficients to obtain a first interval, a second interval, and a third interval. The number of electricity carbon emission coefficients in the first interval, the second interval, and the third interval is equal. The left endpoint of the first interval is less than the left endpoint of the second interval, and the left endpoint of the second interval is less than the left endpoint of the third interval. The first determining module is used to determine that the first power supply method is the power grid supplying power to the target vehicle when the target electricity carbon emission coefficient is greater than the left endpoint of the first interval and less than the right endpoint of the first interval, and controls the power grid to supply power to the target vehicle. The second determining module is used to determine that the first power supply method is the energy storage device supplying power to the target vehicle when the target electricity carbon emission coefficient is greater than the left endpoint of the third interval and less than the right endpoint of the third interval, and controls the energy storage device to supply power to the target vehicle. The device divides historical electricity carbon emission coefficients into zones to determine multiple intervals. By determining which interval the target electricity carbon emission coefficient falls into, it compares the target electricity carbon emission coefficient with the historical electricity carbon emission coefficient, further determining the accurate first power supply method and further controlling the adoption of the first power supply method.

[0085] Specifically, the historical electricity carbon emission coefficients can be sorted from largest to smallest or from smallest to largest. The first interval represents the lower third of the historical electricity carbon emission coefficients, the second interval represents the middle third, and the third interval represents the upper third. If the target electricity carbon emission coefficient is greater than the left endpoint of the first interval but less than the right endpoint, it indicates that the target electricity carbon emission coefficient is in the lower third. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the grid is controlled to supply power to the target vehicle. If the target electricity carbon emission coefficient is greater than the left endpoint of the third interval but less than the right endpoint, it indicates that the target electricity carbon emission coefficient is in the upper third. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the grid is controlled to supply power to the target vehicle.

[0086] To further determine the accurate second power supply method and further control its adoption, the second control unit of this application includes a second sorting module, a third determining module, and a fourth determining module. The second sorting module sorts the historical electricity carbon emission coefficients and groups the sorted historical electricity carbon emission coefficients to obtain a fourth interval, a fifth interval, a sixth interval, and a seventh interval. The number of electricity carbon emission coefficients in each of the fourth, fifth, sixth, and seventh intervals is equal. The left endpoint value of the fourth interval is less than the left endpoint value of the fifth interval. The value is less than the left endpoint value of the sixth interval, and the left endpoint value of the sixth interval is less than the left endpoint value of the seventh interval; the third determining module is used to determine that the second power supply mode is the power grid supplying power to the energy storage device when the target power carbon emission coefficient is greater than the left endpoint value of the fourth interval and less than the right endpoint value of the sixth interval, and to control the power grid to supply power to the energy storage device; the fourth determining module is used to determine that the second power supply mode is the energy storage device supplying power to the power grid when the target power carbon emission coefficient is greater than the left endpoint value of the seventh interval and less than the right endpoint value of the seventh interval, and to control the energy storage device to supply power to the power grid.

[0087] Specifically, the historical electricity carbon emission coefficients can be sorted from largest to smallest or from smallest to largest. The fourth, fifth, and sixth intervals represent the lower three-quarters of the historical electricity carbon emission coefficients, and the seventh interval represents the upper one-quarter. If the target electricity carbon emission coefficient is greater than the left endpoint of the fourth interval but less than the right endpoint of the sixth interval, it indicates that the target electricity carbon emission coefficient is in the lower three-quarters interval. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the grid is controlled to supply power to the energy storage device. If the target electricity carbon emission coefficient is greater than the left endpoint of the seventh interval but less than the right endpoint of the seventh interval, it indicates that the target electricity carbon emission coefficient is in the upper one-quarter interval. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the energy storage device is controlled to supply power to the grid.

[0088] After controlling the energy storage device to supply power to the target device (either the power grid or the target vehicle), the device further includes a second acquisition unit, a third determination unit, a third control unit, and a fourth control unit. The second acquisition unit acquires a first charge level of the energy storage device after it supplies power to the target device. The third determination unit determines whether the first charge level is less than a first charge threshold, which is the minimum allowable discharge value of the energy storage device. The third control unit controls the power grid to supply power to the energy storage device when the first charge level is less than the first charge threshold and the target device is the power grid, until the energy storage device's charge level reaches a second charge threshold, which is greater than the first charge threshold. The fourth control unit controls the power grid to supply power to the target vehicle when the first charge level is less than the first charge threshold and the target device is the target vehicle, until the target vehicle's charging needs are met. This device can adjust the charging and discharging method according to the energy storage device's power, further reducing the carbon emissions of the photovoltaic-energy storage-charging system.

[0089] Specifically, in one embodiment, after controlling the energy storage device to supply power to the grid, due to energy consumption, the energy storage device may fall below the minimum allowable discharge value, i.e., the aforementioned first energy level, and the energy storage device can no longer supply power. In this case, the grid is then controlled to supply power to the energy storage device. In another embodiment, after controlling the energy storage device to supply power to the target vehicle, due to energy consumption, the energy storage device may fall below the minimum allowable discharge value, i.e., the aforementioned first energy level, and the energy storage device can no longer supply power. In this case, the grid is controlled to continue supplying power to the target vehicle.

[0090] In some embodiments, the device further includes a third acquisition unit and a fourth determination unit. The third acquisition unit acquires the remaining electrical energy of the photovoltaic module after it has supplied power to the target vehicle. The fourth determination unit, when the remaining electrical energy is greater than zero, determines a third power supply method based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and controls the power supply to be carried out using the third power supply method. The third power supply method includes the photovoltaic module supplying power to the power grid or the power grid supplying power to the energy storage device. By determining the remaining power of the photovoltaic module, the device can further achieve precise control of the photovoltaic-energy storage-charging system.

[0091] Specifically, after the photovoltaic modules supply power to the target vehicle, it can be further determined whether the remaining power of the photovoltaic modules can continue to provide power. If the remaining power is greater than 0 and can continue to provide power, since the power emission coefficient of the photovoltaic modules supplying power to the energy storage device is greater than the power emission coefficient of the photovoltaic modules supplying power to the grid, a corresponding third power supply method can be selected based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient.

[0092] The aforementioned fourth determining unit includes a third sorting module, a fifth determining module, and a sixth determining module. The third sorting module sorts the historical electricity carbon emission coefficients and groups the sorted historical electricity carbon emission coefficients to obtain an eighth interval, a ninth interval, and a tenth interval. The number of electricity carbon emission coefficients within the eighth interval, the ninth interval, and the tenth interval is equal. The left endpoint value of the eighth interval is less than the left endpoint value of the ninth interval, and the left endpoint value of the ninth interval is less than the left endpoint value of the tenth interval. The fifth determining module determines that the third power supply method is for the photovoltaic modules to supply power to the grid when the target electricity carbon emission coefficient is greater than or equal to the left endpoint value of the tenth interval and less than or equal to the right endpoint value of the tenth interval, and controls the photovoltaic modules to supply power to the grid. The sixth determining module determines that the third power supply method is for the photovoltaic modules to supply power to the energy storage device when the target electricity carbon emission coefficient is greater than or equal to the left endpoint value of the eighth interval and less than or equal to the right endpoint value of the eighth interval, and controls the photovoltaic modules to supply power to the energy storage device. The device divides historical electricity carbon emission coefficients into zones to determine multiple intervals. By determining which interval the target electricity carbon emission coefficient falls into, it compares the target electricity carbon emission coefficient with the historical electricity carbon emission coefficient, further determining the accurate third power supply method mentioned above, and further controlling the adoption of the third power supply method.

[0093] Specifically, the historical electricity carbon emission coefficients can be sorted from largest to smallest or from smallest to largest. The eighth interval can be the same as or different from the first interval; the ninth interval can be the same as or different from the second interval; and the tenth interval can be the same as or different from the third interval. The eighth interval represents the lower third of the historical electricity carbon emission coefficients, the ninth interval represents the middle third, and the tenth interval represents the upper third. When the target electricity carbon emission coefficient is greater than or equal to the left endpoint of the tenth interval and less than or equal to the right endpoint, it indicates that the target electricity carbon emission coefficient is in the upper third. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, and since the carbon emission coefficient of photovoltaic modules supplying power to the grid is greater than that of photovoltaic modules supplying power to energy storage devices, the supply of power from photovoltaic modules to the grid is controlled. When the target carbon emission coefficient is greater than the left endpoint of the eighth interval and less than the right endpoint of the eighth interval, it indicates that the target carbon emission coefficient is in the lower 1 / 3 interval. Since the carbon emission coefficient of grid charging is greater than the carbon emission coefficient of energy storage battery, and since the carbon emission coefficient of the photovoltaic module supplying power to the grid is greater than the carbon emission coefficient of the photovoltaic module supplying power to the energy storage device, the photovoltaic module is controlled to supply power to the energy storage device.

[0094] The aforementioned fourth determining unit further includes an acquisition module, a seventh determining module, and a control module. The acquisition module acquires a second electrical quantity of the energy storage device. The seventh determining module determines whether the second electrical quantity exceeds a second electrical quantity threshold, which is the maximum allowable charging value for the energy storage device. The control module controls the photovoltaic module to supply power to the grid when the second electrical quantity exceeds the second electrical quantity threshold. This device, by determining the electrical quantity of the energy storage device after the photovoltaic module supplies power, changes the control mode of the photovoltaic-energy storage-charging system, further improving energy utilization.

[0095] Specifically, after the photovoltaic module charges the energy storage device, if the energy storage device is fully charged (i.e., the second power level is greater than the second power threshold), the excess photovoltaic power from the photovoltaic module will be supplied to the grid.

[0096] The control device of the aforementioned optical storage and charging system includes a processor and a memory. The first acquisition unit, first determination unit, second determination unit, first control unit, and second control unit are all stored as program units in the memory, and the processor executes the program units stored in the memory to achieve the corresponding functions. All of the above modules are located in the same processor; alternatively, the modules may be located in different processors in any combination.

[0097] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and the optical storage and charging system is controlled by adjusting the kernel parameters.

[0098] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0099] This invention provides a computer-readable storage medium that includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the control method of the optical storage and charging system.

[0100] Specifically, the control methods for the photovoltaic energy storage and charging system include:

[0101] Step S201: Obtain the target power carbon emission coefficient, historical power carbon emission coefficient and photovoltaic power generation power, wherein the target power carbon emission coefficient is the power carbon emission coefficient of the power grid at the current moment, the historical power carbon emission coefficient includes multiple power carbon emission coefficients of the power grid within a predetermined time period, and the photovoltaic power generation power is the power generation power of the photovoltaic module at the current moment.

[0102] Specifically, the carbon emission factor of electricity refers to the amount of carbon dioxide emissions produced per unit of electricity generated, usually expressed as the amount of carbon dioxide emissions (e.g., kilograms) produced per unit of electricity (e.g., kilowatt-hours). Common units of measurement are grams per kilowatt-hour or kilograms per megawatt-hour. The carbon emission factor of electricity is closely related to factors such as the method of electricity generation, the energy structure, and the efficiency of power equipment. Power plants using fossil fuels (such as coal, oil, and natural gas) have higher carbon emission factors, while those using renewable energy sources (such as hydropower, wind power, and solar power) have lower carbon emission factors. Photovoltaic power generation refers to the ability of a photovoltaic cell module or photovoltaic power generation system to convert solar radiation energy into electrical energy per unit of time, usually measured in watts, representing the amount of electrical energy generated per second. Photovoltaic power generation depends on factors such as sunlight intensity, the wavelength of solar radiation, and the efficiency of photovoltaic cell modules.

[0103] Step S202: Determine whether the photovoltaic power generation is greater than or equal to the power threshold. If the photovoltaic power generation is greater than or equal to the power threshold, control the photovoltaic module to supply power to the target vehicle.

[0104] Specifically, the target vehicles mentioned above are electric vehicles with charging needs. When the photovoltaic power generation is greater than or equal to the aforementioned power threshold, it indicates that the photovoltaic modules are generating sufficient power, and the photovoltaic modules can prioritize supplying power to electric vehicles.

[0105] Step S203: If the photovoltaic power generation is less than the above power threshold, determine whether the target vehicle has a charging requirement.

[0106] Specifically, when the photovoltaic power generation is greater than or equal to the aforementioned power threshold, it indicates that the photovoltaic module is not generating enough power and cannot provide electricity to other devices.

[0107] Step S204: When the target vehicle has the above-mentioned charging demand, the first power supply method of the target vehicle is determined according to the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the first power supply method is used to supply power to the target vehicle. The first power supply method includes the power grid supplying power to the target vehicle or the energy storage device supplying power to the target vehicle.

[0108] Specifically, the aforementioned energy storage device can be an energy storage battery. When the target vehicle has the aforementioned charging needs, since the photovoltaic modules cannot provide electricity to the target vehicle, other power generation equipment must be used, such as the power grid and energy storage devices. Because the carbon emission coefficient of grid charging is greater than that of energy storage batteries, the corresponding first power supply method can be selected based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient.

[0109] Step S205: If the target vehicle does not have the above-mentioned charging demand, a second power supply method is determined based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the second power supply method is used to supply power. The second power supply method includes the power grid supplying power to the energy storage device or the energy storage device supplying power to the power grid.

[0110] Specifically, if the target vehicle does not have the aforementioned charging requirements, there is no need to charge the target vehicle, and electrical energy can flow between other devices, such as the power grid and energy storage devices. Since the carbon emission coefficient of grid charging is greater than that of energy storage batteries, a corresponding second power supply method can be selected based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient.

[0111] This invention provides a processor for running a program, wherein the program executes the control method of the optical storage and charging system.

[0112] Specifically, the control methods for the photovoltaic energy storage and charging system include:

[0113] Step S201: Obtain the target power carbon emission coefficient, historical power carbon emission coefficient and photovoltaic power generation power, wherein the target power carbon emission coefficient is the power carbon emission coefficient of the power grid at the current moment, the historical power carbon emission coefficient includes multiple power carbon emission coefficients of the power grid within a predetermined time period, and the photovoltaic power generation power is the power generation power of the photovoltaic module at the current moment.

[0114] Step S202: Determine whether the photovoltaic power generation is greater than or equal to the power threshold. If the photovoltaic power generation is greater than or equal to the power threshold, control the photovoltaic module to supply power to the target vehicle.

[0115] Step S203: If the photovoltaic power generation is less than the above power threshold, determine whether the target vehicle has a charging requirement.

[0116] Step S204: When the target vehicle has the above-mentioned charging demand, the first power supply method of the target vehicle is determined according to the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the first power supply method is used to supply power to the target vehicle. The first power supply method includes the power grid supplying power to the target vehicle or the energy storage device supplying power to the target vehicle.

[0117] Step S205: If the target vehicle does not have the above-mentioned charging demand, a second power supply method is determined based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the second power supply method is used to supply power. The second power supply method includes the power grid supplying power to the energy storage device or the energy storage device supplying power to the power grid.

[0118] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0119] Step S201: Obtain the target power carbon emission coefficient, historical power carbon emission coefficient and photovoltaic power generation power, wherein the target power carbon emission coefficient is the power carbon emission coefficient of the power grid at the current moment, the historical power carbon emission coefficient includes multiple power carbon emission coefficients of the power grid within a predetermined time period, and the photovoltaic power generation power is the power generation power of the photovoltaic module at the current moment.

[0120] Step S202: Determine whether the photovoltaic power generation is greater than or equal to the power threshold. If the photovoltaic power generation is greater than or equal to the power threshold, control the photovoltaic module to supply power to the target vehicle.

[0121] Step S203: If the photovoltaic power generation is less than the above power threshold, determine whether the target vehicle has a charging requirement.

[0122] Step S204: When the target vehicle has the above-mentioned charging demand, the first power supply method of the target vehicle is determined according to the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the first power supply method is used to supply power to the target vehicle. The first power supply method includes the power grid supplying power to the target vehicle or the energy storage device supplying power to the target vehicle.

[0123] Step S205: If the target vehicle does not have the above-mentioned charging demand, a second power supply method is determined based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the second power supply method is used to supply power. The second power supply method includes the power grid supplying power to the energy storage device or the energy storage device supplying power to the power grid.

[0124] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0125] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps:

[0126] Step S201: Obtain the target power carbon emission coefficient, historical power carbon emission coefficient and photovoltaic power generation power, wherein the target power carbon emission coefficient is the power carbon emission coefficient of the power grid at the current moment, the historical power carbon emission coefficient includes multiple power carbon emission coefficients of the power grid within a predetermined time period, and the photovoltaic power generation power is the power generation power of the photovoltaic module at the current moment.

[0127] Step S202: Determine whether the photovoltaic power generation is greater than or equal to the power threshold. If the photovoltaic power generation is greater than or equal to the power threshold, control the photovoltaic module to supply power to the target vehicle.

[0128] Step S203: If the photovoltaic power generation is less than the above power threshold, determine whether the target vehicle has a charging requirement.

[0129] Step S204: When the target vehicle has the above-mentioned charging demand, the first power supply method of the target vehicle is determined according to the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the first power supply method is used to supply power to the target vehicle. The first power supply method includes the power grid supplying power to the target vehicle or the energy storage device supplying power to the target vehicle.

[0130] Step S205: If the target vehicle does not have the above-mentioned charging demand, a second power supply method is determined based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the second power supply method is used to supply power. The second power supply method includes the power grid supplying power to the energy storage device or the energy storage device supplying power to the power grid.

[0131] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0132] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0133] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1A device that provides the functions specified in one or more boxes.

[0134] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0135] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0136] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0137] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0138] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0139] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0140] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0141] 1) The control method of the photovoltaic-storage-charging system of this application first obtains the target power carbon emission coefficient, the historical power carbon emission coefficient, and the photovoltaic power generation power. When the photovoltaic power generation power is greater than or equal to a power threshold, the photovoltaic modules are controlled to supply power to the target vehicle. Then, when the photovoltaic power generation power is less than the power threshold and the target vehicle has a charging demand, the first power supply method is used to supply power to the target vehicle according to the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient. Finally, when the target vehicle does not have a charging demand, the second power supply method is used to supply power according to the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient. By introducing the power carbon emission coefficient and based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, the charging or discharging of the photovoltaic modules, target vehicle, power grid, and energy storage equipment in the photovoltaic-storage-charging system can be controlled under different conditions. Since the power carbon emission coefficient is considered, the carbon emissions of the photovoltaic-storage-charging system can be reduced, solving the problem that the existing technology cannot maximize the carbon reduction potential of the photovoltaic-storage-charging system.

[0142] 2) The control device of the photovoltaic-storage-charging system of this application includes a first acquisition unit that acquires the target power carbon emission coefficient, the historical power carbon emission coefficient, and the photovoltaic power generation power; a first determination unit that controls the photovoltaic modules to supply power to the target vehicle when the photovoltaic power generation power is greater than or equal to a power threshold; a second determination unit that controls the first control unit to supply power to the target vehicle using a first power supply method based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient when the photovoltaic power generation power is less than the power threshold and the target vehicle has a charging demand; and a second control unit that controls the second power supply method to supply power to the target vehicle using a second power supply method based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient when the target vehicle does not have a charging demand. By introducing the power carbon emission coefficient and based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, the charging or discharging of the photovoltaic modules, target vehicle, power grid, and energy storage equipment in the photovoltaic-storage-charging system can be controlled under different conditions. Because the power carbon emission coefficient is considered, the carbon emissions of the photovoltaic-storage-charging system can be reduced, solving the problem that the existing technology cannot maximize the carbon reduction potential of the photovoltaic-storage-charging system.

[0143] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A control method for a photovoltaic energy storage and charging system, characterized in that, The photovoltaic-storage-charging system includes photovoltaic modules, a target vehicle, a power grid, and energy storage devices connected by communication, wherein the method includes: The target power carbon emission coefficient, historical power carbon emission coefficient, and photovoltaic power generation power are obtained. The target power carbon emission coefficient is the power carbon emission coefficient of the power grid at the current moment. The historical power carbon emission coefficient includes multiple power carbon emission coefficients of the power grid within a predetermined time period. The photovoltaic power generation power is the power generation power of the photovoltaic module at the current moment. Determine whether the photovoltaic power generation is greater than or equal to a power threshold, and if the photovoltaic power generation is greater than or equal to the power threshold, control the photovoltaic module to supply power to the target vehicle; If the photovoltaic power generation is less than the power threshold, determine whether the target vehicle has a charging requirement; When the target vehicle has the charging demand, a first power supply method for the target vehicle is determined based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the first power supply method is used to supply power to the target vehicle. The first power supply method includes the power grid supplying power to the target vehicle or the energy storage device supplying power to the target vehicle. If the target vehicle does not have the charging requirement, a second power supply method is determined based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient, and the second power supply method is used to supply power. The second power supply method includes the grid supplying power to the energy storage device or the energy storage device supplying power to the grid.

2. The method according to claim 1, characterized in that, When the target vehicle has the charging demand, based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient, a first power supply method for the target vehicle is determined, and power is supplied to the target vehicle using the first power supply method, including: The historical electricity carbon emission coefficients are sorted, and the sorted historical electricity carbon emission coefficients are grouped to obtain a first interval, a second interval, and a third interval. The number of electricity carbon emission coefficients in the first interval, the second interval, and the third interval is equal. The left endpoint value of the first interval is less than the left endpoint value of the second interval, and the left endpoint value of the second interval is less than the left endpoint value of the third interval. If the target carbon emission coefficient is greater than the left endpoint of the first interval and less than the right endpoint of the first interval, the first power supply method is determined to be the power grid supplying power to the target vehicle, and the power grid is controlled to supply power to the target vehicle. If the target carbon emission coefficient is greater than the left endpoint of the third interval and less than the right endpoint of the third interval, the first power supply method is determined to be that the energy storage device supplies power to the target vehicle, and the energy storage device is controlled to supply power to the target vehicle.

3. The method according to claim 1, characterized in that, When the target vehicle has no charging demand, a second power supply method is determined based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient, and the second power supply method is used for power supply, including: The historical electricity carbon emission coefficients are sorted, and the sorted historical electricity carbon emission coefficients are grouped to obtain a fourth interval, a fifth interval, a sixth interval, and a seventh interval. The number of electricity carbon emission coefficients in the fourth interval, the fifth interval, the sixth interval, and the seventh interval is equal. The left endpoint value of the fourth interval is less than the left endpoint value of the fifth interval, the left endpoint value of the fifth interval is less than the left endpoint value of the sixth interval, and the left endpoint value of the sixth interval is less than the left endpoint value of the seventh interval. If the target carbon emission coefficient is greater than the left endpoint of the fourth interval and less than the right endpoint of the sixth interval, the second power supply method is determined to be the power grid supplying power to the energy storage device, and the power grid is controlled to supply power to the energy storage device. If the target carbon emission coefficient is greater than the left endpoint of the seventh interval and less than the right endpoint of the seventh interval, the second power supply method is determined to be that the energy storage device supplies power to the grid, and the energy storage device is controlled to supply power to the grid.

4. The method according to claim 1, characterized in that, After controlling the energy storage device to supply power to the target device, which is the power grid or the target vehicle, the method further includes: Obtain the first electrical charge of the energy storage device after it supplies the target device; Determine whether the first power level is less than a first power threshold, where the first power threshold is the minimum allowable discharge value of the energy storage device; When the first power level is less than the first power level threshold and the target device is the power grid, the power grid is controlled to supply power to the energy storage device until the power level of the energy storage device reaches the second power level threshold, wherein the second power level threshold is greater than the first power level threshold. If the first power level is less than the first power level threshold and the target device is the target vehicle, the power grid is controlled to supply power to the target vehicle until the charging requirements of the target vehicle are met.

5. The method according to claim 1, characterized in that, When the photovoltaic power generation is greater than or equal to the power threshold, after controlling the photovoltaic module to supply power to the target vehicle, the method further includes: The remaining electrical energy of the photovoltaic module after it has supplied power to the target vehicle is obtained; When the remaining electrical energy is greater than 0, a third power supply method is determined based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and the power supply is controlled to be carried out using the third power supply method. The third power supply method includes the photovoltaic module supplying power to the grid or the grid supplying power to the energy storage device.

6. The method according to claim 5, characterized in that, Based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient, a third power supply method is determined, including: The historical electricity carbon emission coefficients are sorted, and the sorted historical electricity carbon emission coefficients are grouped to obtain the eighth interval, the ninth interval, and the tenth interval. The number of electricity carbon emission coefficients in the eighth interval, the ninth interval, and the tenth interval is equal. The left endpoint value of the eighth interval is less than the left endpoint value of the ninth interval, and the left endpoint value of the ninth interval is less than the left endpoint value of the tenth interval. If the target carbon emission coefficient is greater than or equal to the left endpoint of the tenth interval and less than or equal to the right endpoint of the tenth interval, the third power supply method is determined to be the photovoltaic module supplying power to the grid, and the photovoltaic module is controlled to supply power to the grid. If the target carbon emission coefficient is greater than or equal to the left endpoint of the eighth interval and less than or equal to the right endpoint of the eighth interval, the third power supply method is determined to be that the photovoltaic module supplies power to the energy storage device, and the photovoltaic module is controlled to supply power to the energy storage device.

7. The method according to claim 6, characterized in that, After controlling the photovoltaic module to supply power to the energy storage device, the method further includes: Obtain the second electrical quantity of the energy storage device; Determine whether the second power level is greater than a second power threshold, where the second power threshold is the maximum value that the energy storage device is allowed to charge. When the second power quantity is greater than the second power quantity threshold, the photovoltaic module is controlled to supply power to the power grid.

8. A control device for a photovoltaic energy storage and charging system, characterized in that, The photovoltaic-storage-charging system includes photovoltaic modules, a target vehicle, a power grid, and energy storage devices connected by communication. The device includes: The first acquisition unit is used to acquire the target power carbon emission coefficient, the historical power carbon emission coefficient, and the photovoltaic power generation power, wherein the target power carbon emission coefficient is the power carbon emission coefficient of the power grid at the current moment, the historical power carbon emission coefficient includes multiple power carbon emission coefficients of the power grid within a predetermined time period, and the photovoltaic power generation power is the power generation power of the photovoltaic module at the current moment. The first determining unit is used to determine whether the photovoltaic power generation power is greater than or equal to a power threshold, and if the photovoltaic power generation power is greater than or equal to the power threshold, control the photovoltaic module to supply power to the target vehicle; The second determining unit is used to determine whether the target vehicle has a charging requirement when the photovoltaic power generation is less than the power threshold. A first control unit is configured to, when the target vehicle has the charging demand, determine a first power supply method for the target vehicle based on the relationship between the target power carbon emission coefficient and the historical power carbon emission coefficient, and control the first power supply method to supply power to the target vehicle, wherein the first power supply method includes the power grid supplying power to the target vehicle or the energy storage device supplying power to the target vehicle. The second control unit is configured to determine a second power supply method based on the relationship between the target electricity carbon emission coefficient and the historical electricity carbon emission coefficient when the target vehicle does not have the charging requirement, and control the second power supply method to be used for power supply. The second power supply method includes the grid supplying power to the energy storage device or the energy storage device supplying power to the grid.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the method according to any one of claims 1 to 7.

10. A power system comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to execute the method described in any one of claims 1 to 7 through the computer program.

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