An energy scheduling method based on a vehicle surrounding bidirectional energy supplement system

Abstract

The application discloses an energy scheduling method based on a vehicle surrounding bidirectional energy supplement system, which comprises the following steps: collecting the power generation of a photovoltaic module, the battery state of charge of a household energy storage system, the battery state of charge of an electric vehicle, household load power and real-time electricity price information; judging the current power grid state and electricity consumption period according to the collected information; scheduling the bidirectional electric energy flow among the photovoltaic module, the household energy storage system, a charging pile and the electric vehicle to realize photovoltaic consumption, valley electricity charging, peak electricity feeding and emergency power supply. The bidirectional energy intelligent scheduling among the photovoltaic module, the household energy storage system, the charging pile, the electric vehicle and an outdoor power source is realized, multiple scenes such as household electricity consumption, vehicle energy supplement, emergency power supply, power grid support and outdoor electricity consumption are covered, and the comprehensive energy consumption cost of users is significantly reduced.

Description

Technical Field

[0001] This invention relates to the field of energy storage and smart grid technology, and in particular to an energy dispatching method based on a two-way energy replenishment system around a vehicle. Background Technology

[0002] With the acceleration of the global energy transition, the adoption rates of distributed photovoltaic power generation, residential energy storage systems, and electric vehicles have increased significantly. However, the existing energy system still faces the following problems:

[0003] 1. Low energy efficiency: There is a time and space mismatch between household photovoltaic power generation and household electricity demand. Excess photovoltaic power generation cannot be effectively stored or utilized, resulting in the waste of clean energy.

[0004] 2. High grid load pressure: Concentrated charging of electric vehicles exacerbates the peak-valley difference in the power grid, affecting the stability of power supply.

[0005] 3. Insufficient household emergency response capabilities: Traditional power grid supply relies on fixed lines for power transmission, which cannot cover power supply in off-grid scenarios, and lacks backup energy support when encountering power outages, making it difficult to meet continuous power demand.

[0006] 4. Household energy storage systems and charging piles often operate independently without interaction, lacking energy flow and intelligent scheduling mechanisms, resulting in energy waste and low equipment utilization.

[0007] 5. The household storage system has a high capacity configuration, resulting in higher installation costs for users.

[0008] While integrated photovoltaic, energy storage, and charging stations exist in existing technologies, most only achieve unidirectional or partial coordination and fail to construct an energy scheduling method with vehicles as the core and multiple devices interacting in a two-way closed loop. Summary of the Invention

[0009] In view of the above, the present invention aims to provide an energy scheduling method based on a bidirectional energy replenishment system around a vehicle to solve the aforementioned technical problems.

[0010] The technical solution adopted in this invention is as follows:

[0011] This invention provides an energy scheduling method based on a vehicle-surrounding bidirectional energy replenishment system, including:

[0012] Collect data on the power generation of photovoltaic modules, the state of charge of batteries in household energy storage systems, the state of charge of batteries in electric vehicles, household load power, and real-time electricity prices.

[0013] Based on the collected information, determine the current power grid status and electricity consumption periods;

[0014] The system can coordinate the bidirectional flow of electricity between the photovoltaic modules, household energy storage system, charging piles and electric vehicles to achieve photovoltaic power absorption, off-peak electricity charging, peak electricity feeding and emergency power supply.

[0015] Optionally, during off-peak hours, the energy management system automatically triggers the charging of the residential energy storage system and / or the electric vehicle, and dynamically allocates charging power and optimizes the charging sequence.

[0016] Optionally, the energy management system detects the power generation of the photovoltaic modules, the battery state of charge of the household energy storage system, and the electricity consumption of the household load, dynamically adjusts the direction of power flow, charges the photovoltaic power into the household energy storage system or supplies it to the household load, and feeds excess power into the grid.

[0017] Optionally, when the power grid fails, the energy management system controls the household energy storage system to supply power to the household load in reverse through a bidirectional energy storage inverter;

[0018] The state of charge of the household energy storage system is detected, and when its power level is lower than a preset threshold, the electric vehicle is controlled to provide power to the household load through the charging pile and the household energy storage system.

[0019] Optionally, the electric vehicle outputs electrical energy from the vehicle to the home through its onboard bidirectional DC / DC converter and DC / AC converter, and the charging pile is used to transmit the electrical energy to the household energy storage system or directly supply the household load.

[0020] Optionally, during peak grid periods, the energy management system controls the residential energy storage system and / or the electric vehicle to feed power back to the grid through the charging pile.

[0021] Optionally, the energy management system controls the charging pile or the electric vehicle to provide power to the outdoor mobile power source based on the access status of the outdoor mobile power source.

[0022] Optionally, the residential energy storage system performs charging of the electric vehicle and receives discharge from the electric vehicle via its bidirectional DC / DC converter.

[0023] Optionally, the energy management system generates and executes at least one of the following modes based on real-time electricity prices, photovoltaic power generation, energy storage battery status, and electric vehicle access status:

[0024] Photovoltaic direct charging for home storage, off-peak charging for vehicles, home storage emergency power supply, vehicle emergency power supply, and peak-hour reverse feedback mode.

[0025] The above-described solution of the present invention has at least the following beneficial effects:

[0026] The above-described solution of the present invention collects data on the power generation of photovoltaic modules, the state of charge (SOC) of the batteries in residential energy storage systems, the SOC of the batteries in electric vehicles, the power load of households, and real-time electricity prices. Based on the collected information, it determines the current grid status and electricity consumption period. It then schedules the bidirectional energy flow between the photovoltaic modules, residential energy storage systems, charging piles, and electric vehicles to achieve photovoltaic power absorption, off-peak charging, peak power feeding, and emergency power supply. This realizes bidirectional intelligent energy scheduling between photovoltaic, residential energy storage, charging piles, vehicles, and outdoor power sources, covering multiple scenarios such as household electricity consumption, vehicle charging, emergency power supply, grid support, and outdoor electricity consumption, significantly reducing the overall energy cost for users. Attached Figure Description

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described below with reference to the accompanying drawings, wherein:

[0028] Figure 1 This is a schematic diagram of an energy scheduling method based on a two-way energy replenishment system around a vehicle, provided in an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of a bidirectional energy replenishment system based on the vehicle periphery provided in an embodiment of the present invention. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] This invention proposes an embodiment of an energy scheduling method based on a two-way vehicle perimeter energy replenishment system, specifically, as follows: Figure 1 As shown, it includes:

[0032] Step 11: Collect the power generation of photovoltaic modules, the state of charge of the battery of the household energy storage system, the state of charge of the battery of the electric vehicle, the household load power, and real-time electricity price information.

[0033] Step 12: Based on the collected information, determine the current power grid status and electricity consumption period;

[0034] Step 13: Schedule the bidirectional power flow between the photovoltaic modules, household energy storage system, charging pile and electric vehicle to realize photovoltaic absorption, off-peak charging, peak power feeding and emergency power supply.

[0035] The method in this embodiment is applied to a bidirectional energy replenishment system around a vehicle, such as... Figure 2 As shown, the system includes:

[0036] Photovoltaic modules, installed on rooftops or balconies, are used to convert solar energy into electrical energy;

[0037] The residential energy storage system includes lithium iron phosphate battery modules, bidirectional energy storage inverters (PCS), battery management systems (BMS), and bidirectional DC-DC modules, which are electrically connected to photovoltaic modules, the power grid, and charging piles, respectively.

[0038] The charging station supports bidirectional power transmission, connecting household energy storage systems and the power grid;

[0039] Electric vehicles, as mobile energy storage units, are equipped with bidirectional DC / DC converters and DC / AC converters, and have V2G / V2H / V2L functions;

[0040] Outdoor portable power bank, detachably connected to charging stations or electric vehicles;

[0041] The Energy Management System (EMS) communicates with all the above devices to collect operational data and execute scheduling strategies.

[0042] When the energy management system (EMS) detects that the current time is during off-peak hours and the electricity price is low, it automatically triggers the charging of residential energy storage systems and / or electric vehicles. The EMS dynamically allocates charging power based on the residential storage SOC, vehicle SOC, and household load: prioritizing grid power; if the residential storage SOC is below 30%, it charges the storage to 80% first, then charges the vehicle; if the vehicle needs rapid charging, the charging station's output power is increased. Simultaneously, timing optimization avoids instantaneous surges caused by simultaneously starting high-power charging equipment. This process enables electricity price arbitrage, reducing users' electricity costs.

[0043] During peak daytime solar power generation periods, the EMS (Electronic Management System) collects real-time data on solar power generation, household energy storage SOC (State of Charge), and household load power. If solar power exceeds household load and the household energy storage SOC is not full, excess solar power is fed into the household energy storage; if the storage is full, the remaining power is fed into the grid. If solar power is less than household load, solar power is prioritized, with the shortfall supplemented by the household energy storage or the grid. This ensures efficient utilization of solar power and avoids curtailment.

[0044] When the power grid fails, the EMS automatically disconnects from the grid and controls the residential energy storage system to output AC power in reverse through a bidirectional energy storage inverter to power critical household loads. Simultaneously, the EMS continuously monitors the residential energy storage system's State of Charge (SOC). When the SOC falls below a preset threshold (e.g., 15%), the EMS alerts the user and checks if the electric vehicle is connected to a charging station. If the vehicle is connected and has sufficient SOC, the EMS activates V2H mode: the vehicle's battery outputs AC power via an onboard bidirectional DC / DC and DC / AC converter, which is then transmitted to the residential energy storage system through the charging station or directly to household loads. This seamless switching ensures long-term emergency power supply for the household.

[0045] During peak grid periods, such as 10:00-12:00 and 18:00-20:00 on weekdays, the EMS (Electric Power Management System) determines whether to implement peak shaving and power feeding based on real-time electricity prices and user-set participation strategies. If the user agrees and the user's electricity storage SOC (State of Charge) is higher than 50% or the vehicle's SOC is higher than 60%, the system controls the user's electricity storage and / or vehicle to feed power back to the grid through charging piles, with the feeding power not exceeding the equipment's rated capacity. Users generate revenue by selling electricity during peak hours, while simultaneously helping the grid reduce peak loads.

[0046] When a user carries an outdoor portable power bank and connects it to a charging station or vehicle, the EMS identifies the connected device. If the user selects "Outdoor Power Bank Charging," the system controls the charging station or vehicle to output rated power to the outdoor portable power bank. If the user needs emergency power replenishment in an outdoor setting and the vehicle's battery is low, the system can use the power from the outdoor portable power bank to replenish the vehicle's power. This expands the system's applicability to scenarios such as camping and fieldwork.

[0047] The energy scheduling process in this embodiment is as follows:

[0048] Step S1: The Battery Management System (BMS) collects photovoltaic power generation, household storage SOC, vehicle SOC, household load power, real-time electricity price, and grid status (normal / outage).

[0049] Step S2: If the power grid fails, proceed to step S3; otherwise, proceed to step S4.

[0050] Step S3 (Power Outage Mode): Prioritize controlling reverse power supply from the household storage. If the household storage SOC < 15% and the vehicle is connected with an SOC > 20%, then start the vehicle's V2H power supply; otherwise, issue a low battery alarm.

[0051] Step S4 (Grid-connected mode): Determine the current time period. If it is a valley period, control the grid or household energy storage to charge the vehicle, with the charging power dynamically adjusted according to the household energy storage SOC and the vehicle SOC; if it is a peak period, control the household energy storage and / or vehicle to feed power to the grid according to user settings; if it is a normal period, prioritize the consumption of photovoltaic power: if the photovoltaic power generation is greater than the household load power, the excess power is charged into the household energy storage or fed to the grid; if the photovoltaic power generation is less than the household load power, the shortfall is supplemented by the household energy storage or the grid.

[0052] Step S5: Repeat steps S1 to S4 every 5 minutes to achieve closed-loop dynamic scheduling.

[0053] The energy dispatching method based on the vehicle-peripheral two-way energy replenishment system in this embodiment realizes two-way intelligent energy dispatching between photovoltaics, household energy storage, charging piles, vehicles and outdoor power sources, covering five high-frequency scenarios: household electricity consumption, vehicle energy replenishment, emergency power supply, grid support and outdoor electricity consumption.

[0054] New energy vehicles are upgraded to "energy nodes + emergency units" that undertake energy flow allocation and emergency response; household storage, charging piles, vehicles, and outdoor power sources achieve bidirectional energy circulation, effectively improving energy utilization and aligning with the "dual carbon" development goal; outdoor power sources integrate outdoor power supply and vehicle emergency power replenishment functions, offering outstanding cost-effectiveness with dual-use functionality; through the coordinated scheduling of off-peak electricity replenishment, photovoltaic consumption, and peak-hour reverse power feedback, the overall energy cost for users is significantly reduced.

[0055] An embodiment of the present invention also provides a computing device, including: a processor and a memory storing a computer program, wherein the computer program, when executed by the processor, performs the method described in the above embodiments. All implementations in the above method embodiments are applicable to this embodiment and can achieve the same technical effect.

[0056] In this embodiment of the invention, a computer-readable storage medium is also provided, storing instructions that, when executed on a computer, cause the computer to perform the method described in the above embodiments. All implementations of the methods described in the above embodiments are applicable to this embodiment and can achieve the same technical effect.

[0057] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0058] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0059] In the embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0060] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0061] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0062] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0063] Furthermore, it should be noted that in the apparatus and method of the present invention, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent solutions of the present invention. Moreover, the steps performing the above series of processes can naturally be executed in the order described, but are not necessarily required to be executed in chronological order; some steps can be executed in parallel or independently of each other. Those skilled in the art will understand that all or any step or component of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or a combination thereof. This is something that those skilled in the art can achieve by using their basic programming skills after reading the description of the present invention.

[0064] Therefore, the object of the present invention can also be achieved by running a program or a set of programs on any computing device. The computing device can be a known general-purpose device. Therefore, the object of the present invention can also be achieved simply by providing a program product containing program code implementing the method or apparatus. That is, such a program product also constitutes the present invention, and the storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium can be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is obvious that the components or steps can be decomposed and / or recombined. These decompositions and / or recombinations should be considered equivalent to the present invention. Furthermore, the steps performing the above series of processes can naturally be performed in the order described, but are not necessarily required to be performed in chronological order. Some steps can be performed in parallel or independently of each other.

[0065] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An energy dispatching method based on a vehicle-surrounding bidirectional energy replenishment system, characterized in that, An electric vehicle bidirectional energy replenishment system includes a photovoltaic module, a residential energy storage system connected to the photovoltaic module, a charging pile electrically connected to the residential energy storage system and / or the power grid, an electric vehicle that performs bidirectional electrical energy interaction with the residential energy storage system and the power grid through the charging pile, and an energy management system that is communicatively connected to the photovoltaic module, the residential energy storage system, the charging pile and the electric vehicle respectively. The methods include: Collect data on the power generation of photovoltaic modules, the state of charge of batteries in household energy storage systems, the state of charge of batteries in electric vehicles, household load power, and real-time electricity prices. Based on the collected information, determine the current power grid status and electricity consumption periods; The system can coordinate the bidirectional flow of electricity between the photovoltaic modules, household energy storage system, charging piles and electric vehicles to achieve photovoltaic power absorption, off-peak electricity charging, peak electricity feeding and emergency power supply.

2. The energy dispatching method based on a two-way vehicle perimeter energy replenishment system according to claim 1, characterized in that, During off-peak hours, the energy management system automatically triggers the charging of the residential energy storage system and / or the electric vehicle, and dynamically allocates charging power and optimizes the charging sequence.

3. The energy scheduling method based on a two-way vehicle perimeter energy replenishment system according to claim 1, characterized in that, The energy management system detects the power generation of the photovoltaic modules, the battery state of charge of the household energy storage system, and the electricity consumption of the household load, and dynamically adjusts the direction of power flow to charge the household energy storage system or supply the household load with photovoltaic power, and feeds excess power back into the grid.

4. The energy scheduling method based on a two-way vehicle perimeter energy replenishment system according to claim 1, characterized in that, When the power grid fails, the energy management system controls the household energy storage system to supply power to the household loads in reverse through a bidirectional energy storage inverter; The state of charge of the household energy storage system is detected, and when its power level is lower than a preset threshold, the electric vehicle is controlled to provide power to the household load through the charging pile and the household energy storage system.

5. The energy dispatching method based on a two-way vehicle perimeter energy replenishment system according to claim 4, characterized in that, The electric vehicle outputs electrical energy to the home through its onboard bidirectional DC / DC converter and DC / AC converter, and the charging pile is used to transmit the electrical energy to the household energy storage system or directly supply the household load.

6. The energy scheduling method based on a two-way vehicle perimeter energy replenishment system according to claim 1, characterized in that, During peak grid hours, the energy management system controls the residential energy storage system and / or the electric vehicle to feed power back to the grid through the charging pile.

7. The energy scheduling method based on a two-way vehicle perimeter energy replenishment system according to claim 1, characterized in that, The energy management system controls the charging pile or the electric vehicle to provide power to the outdoor mobile power source based on the access status of the outdoor mobile power source.

8. The energy dispatching method based on a two-way vehicle perimeter energy replenishment system according to claim 1, characterized in that, The residential energy storage system performs charging of the electric vehicle and receives discharge from the electric vehicle via its bidirectional DC / DC converter.

9. The energy dispatching method based on a two-way vehicle perimeter energy replenishment system according to claim 1, characterized in that, The energy management system generates and executes at least one of the following modes based on real-time electricity prices, photovoltaic power generation, energy storage battery status, and electric vehicle access status: Photovoltaic direct charging for home storage, off-peak charging for vehicles, home storage emergency power supply, vehicle emergency power supply, and peak-hour reverse feedback mode.

Images