Energy scheduling system and method and vehicle-home interconnection system

Abstract

The invention provides an energy dispatching system and method and a vehicle-home interconnection system, the energy dispatching system comprises a bidirectional charging and discharging device and a dispatching unit, the bidirectional charging and discharging device is used for transmitting the electric energy of a power battery to a home load and a power grid, and is also used for transmitting the electric energy of the power grid and an energy storage battery to the power battery; and the scheduling unit is used for controlling the bidirectional charging and discharging equipment to transmit the electric energy of the power battery to the household load and / or the power grid based on the target energy scheduling strategy, or controlling the bidirectional charging and discharging equipment to transmit the electric energy of the power grid and / or the energy storage battery to the power battery, so that the power battery can directly supply power to the household load. The energy utilization efficiency of the vehicle-home interconnection system is improved, meanwhile, under the conditions that the electric quantity of the energy storage battery is low and a power grid breaks down, the risk of power failure of an important load in a family is reduced, and therefore the electric energy requirement of the family load can be guaranteed to the maximum extent.

Description

Technical Field

[0001] This application relates to the field of vehicle-home interconnection, and particularly to an energy scheduling system, method and vehicle-home interconnection system. Background Art

[0002] Through the interconnection of the vehicle and the home energy management system, the vehicle-home interconnection system can, while maximizing the satisfaction of the energy demands of the vehicle and home loads, achieve efficient utilization of energy, reduce electricity costs, and thus has been widely applied. Among them, the energy scheduling in the vehicle-home interconnection system is an important factor affecting the energy utilization efficiency and energy supply performance of the vehicle-home interconnection system.

[0003] Currently, for the energy scheduling scheme of the vehicle-home interconnection system, the energy utilization efficiency of the vehicle-home interconnection system is low, and it is difficult to effectively guarantee the electrical energy demand of the home load. Summary of the Invention

[0004] To solve the above technical problems, this application provides an energy scheduling system, method and vehicle-home interconnection system to solve the problems in the prior art that the energy utilization efficiency of the vehicle-home interconnection system is low and it is difficult to effectively guarantee the electrical energy demand of the home load.

[0005] To achieve the above technical purpose, the embodiments of this application provide the following technical solutions:

[0006] In a first aspect, an embodiment of this specification provides an energy scheduling system applied to a vehicle-home interconnection system. The vehicle-home interconnection system includes a vehicle and a home energy management system. The vehicle includes a power battery, and the home energy management system includes a storage battery and a home load; the energy scheduling system includes a bidirectional charging and discharging device and a scheduling unit; the bidirectional charging and discharging device is respectively connected to the home load, the power grid, the power battery and the storage battery;

[0007] The bidirectional charging and discharging device is used to transmit the electrical energy of the power battery to the home load and the power grid, and is also used to transmit the electrical energy of the power grid and the storage battery to the power battery;

[0008] The scheduling unit is connected to the bidirectional charging and discharging device, and is used to control the bidirectional charging and discharging device to transmit the electrical energy of the power battery to the home load and / or the power grid, or to control the bidirectional charging and discharging device to transmit the electrical energy of the power grid and / or the storage battery to the power battery based on a target energy scheduling strategy.

[0009] In one embodiment, the home load includes at least two levels of loads, and the power supply priorities of different levels of loads are different;

[0010] The scheduling unit is specifically used for:

[0011] When the remaining power of the energy storage battery is less than a predetermined discharge threshold and the power grid is in a fault state, obtain the maximum available power output of the power battery and the required power of each level of load in the household load;

[0012] Based on the maximum available power output of the power battery and the required power of each level of load in the household load, determine the target load among the loads at each level of the household load;

[0013] Based on the required power of the target load, control the bidirectional charging and discharging device to transfer the power of the power battery to the target load.

[0014] In one embodiment, the scheduling unit is specifically configured to:

[0015] Based on the maximum available power output of the power battery and the required power of each level of load in the household load, determine the target load among the loads at each level of the household load in the order of decreasing power supply priority.

[0016] In one embodiment, the scheduling unit is specifically configured to:

[0017] Based on the driving plan of the vehicle and the required power of outdoor operations, determine the target power of the power battery, where the required power of outdoor operations is the power that needs to be provided by the power battery;

[0018] When the remaining power of the power battery is less than the target power, control the bidirectional charging and discharging device to transfer the power of the power grid and / or the energy storage battery to the power battery.

[0019] In one embodiment, the vehicle further includes an in-vehicle photovoltaic system, which is used to charge the power battery of the vehicle and supply power to the load of the vehicle; the scheduling unit is specifically configured to:

[0020] Based on the driving plan of the vehicle, determine the required driving power of the vehicle, where the required driving power is the power that needs to be provided by the power battery;

[0021] Based on the required power of outdoor operations and the required driving power of the vehicle, determine the target power of the power battery.

[0022] In one embodiment, the scheduling unit is specifically configured to:

[0023] Based on the first target data, determine the target time interval for the power grid and / or the energy storage battery to charge the power battery and the charging power during the target time interval. The first target data includes at least some of the power price change trend of the power grid, the load change trend of the power grid, the remaining power of the energy storage battery, the required electric energy of the power battery, and the user charging demand information;

[0024] Based on the target time interval and the charging power during the target time interval, control the bi-directional charging and discharging device to transfer the electric energy of the power grid and / or the energy storage battery to the power battery.

[0025] In one implementation, the scheduling unit is specifically configured to:

[0026] Based on the second target data, when it is determined that the power battery meets the grid connection condition, control the bi-directional charging and discharging device to transfer the electric energy of the power battery to the power grid;

[0027] Wherein, the second target data includes at least some of the remaining power of the power battery, the target power of the power battery, the power price change trend of the power grid, the remaining power of the energy storage battery, and the required electric energy of the household load.

[0028] In one implementation, the home energy management system further includes a home photovoltaic system, and the home photovoltaic system is used to charge the energy storage battery and supply power to the household load;

[0029] The scheduling unit is further configured to:

[0030] Based on the third target data, control at least one of the home photovoltaic system, the energy storage battery, the power grid, and the power battery to supply power to the household load, and / or control the home photovoltaic system to feed back electric energy to the power grid;

[0031] Wherein, the third target data includes at least some of the light intensity change trend in the area where the home photovoltaic system is located, the required electric energy of the household load, the target power of the power battery, the remaining power of the power battery, the remaining power of the energy storage battery, the power price change trend of the power grid, the load change trend of the power grid, and the operating state of the power grid.

[0032] In a second aspect, an energy scheduling method provided by an embodiment of this specification is applied to the energy scheduling system as described in any one of the above. The method includes:

[0033] Based on the target energy scheduling strategy, control the bi-directional charging and discharging device to transfer the electric energy of the power battery to the household load and / or the power grid, or control the bi-directional charging and discharging device to transfer the electric energy of the power grid and / or the energy storage battery to the power battery.

[0034] In a third aspect, an embodiment of the present specification provides a vehicle-home interconnection system, including a vehicle, a home energy management system, and an energy scheduling system as described in any one of the above.

[0035] In a fourth aspect, an embodiment of the present specification provides a computer-readable storage medium, on which a computer program is stored. When the computer program is run by a processor, the energy scheduling method as described above is implemented.

[0036] In a fifth aspect, an embodiment of the present specification provides a computer program product or a computer program. The computer program product includes a computer program, and the computer program is stored in a computer-readable storage medium; a processor of the computer device reads the computer program from the computer-readable storage medium, and when the processor executes the computer program, the energy scheduling method as described above is implemented.

[0037] It can be seen from the above technical solutions that the embodiments of the present application provide an energy scheduling system, method, and vehicle-home interconnection system. The vehicle-home interconnection system includes a vehicle and a home energy management system. The vehicle includes a power battery, and the home energy management system includes an energy storage battery and a household load. The energy scheduling system includes a bi-directional charging and discharging device and a scheduling unit. The bi-directional charging and discharging device is respectively connected to the household load, the power grid, the power battery, and the energy storage battery. The bi-directional charging and discharging device is used to transfer the electric energy of the power battery to the household load and the power grid, and is also used to transfer the electric energy of the power grid and the energy storage battery to the power battery. The scheduling unit is connected to the bi-directional charging and discharging device and is used to control the bi-directional charging and discharging device to transfer the electric energy of the power battery to the household load and / or the power grid based on the target energy scheduling strategy, or control the bi-directional charging and discharging device to transfer the electric energy of the power grid and / or the energy storage battery to the power battery, so that the power battery can directly supply power to the household load without the need for the energy storage battery to transfer electric energy, thereby avoiding the power loss caused by the transfer of electric energy through the energy storage battery, effectively improving the energy utilization efficiency of the vehicle-home interconnection system. At the same time, in the case of low energy storage battery power and power grid failures, etc., the power battery can supply power to the household load, reducing the risk of power outage of relatively important loads in the home, thereby being able to ensure the power demand of the household load to the greatest extent. Description of the Drawings

[0038] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on the provided drawings.

[0039] Figure 1 The structural schematic diagram of an energy scheduling system provided for the embodiments of this specification.

[0040] Figure 2 The structural schematic diagram of another energy scheduling system provided for the embodiments of this specification.

[0041] Figure 3 The structural schematic diagram of yet another energy scheduling system provided for the embodiments of this specification. Specific Embodiments

[0042] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification should have the ordinary meaning understood by those of ordinary skill in the field to which this specification belongs. The "first", "second" and similar terms used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of components.

[0043] Unless otherwise required by the context, throughout the specification, "a plurality" means "at least two", and "including" is interpreted as an open and inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" etc. are intended to indicate that the specific features, structures, materials or characteristics related to the embodiment or example are included in at least one embodiment or example of this specification. The schematic representations of the above terms are not necessarily referring to the same embodiment or example.

[0044] The following will clearly and completely describe the technical solutions in the embodiments of this specification in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by this specification.

[0045] Overview

[0046] As described in the background art, through the interconnection between the vehicle and the home energy management system, the vehicle-home interconnection system can, while maximizing the energy requirements of the vehicle and home loads, achieve efficient energy utilization, reduce the electricity cost, and thus be widely applied. In the vehicle-home interconnection system, the vehicle is an electric vehicle or a hybrid vehicle, that is, a power battery is provided in the vehicle. In addition, on-vehicle photovoltaics may also be provided in the vehicle. The home energy management system includes a storage battery and home loads, and may also include home photovoltaics. Among them, the energy scheduling in the vehicle-home interconnection system is an important factor affecting the energy utilization efficiency and energy supply performance of the vehicle-home interconnection system.

[0047] Currently, for the energy scheduling scheme of the vehicle-home interconnection system, the storage battery is usually used to store electric energy, so that in the case of a power grid failure or a high electricity price, the storage battery can supply power to the home loads and / or charge the power battery. However, there is power loss in the transfer of electric energy through the storage battery, and the energy utilization efficiency of the vehicle-home interconnection system cannot be guaranteed. At the same time, in the case of a low battery level of the storage battery and a power grid failure, it is difficult to ensure the power supply to the home loads, which is likely to cause power outage of relatively important loads in the home, resulting in greater safety risks or economic losses, such as devices that rely on continuous power supply, such as ventilators, life monitoring equipment, and smart home centers. Therefore, through the existing energy scheduling scheme, the energy utilization efficiency of the vehicle-home interconnection system is low, and it is difficult to effectively ensure the power demand of the home loads.

[0048] To solve the problems that the energy utilization efficiency of the vehicle-home interconnection system is low and it is difficult to effectively ensure the power demand of the home loads in the traditional method, in the technical solution of the present application, the energy scheduling system includes a bi-directional charging and discharging device and a scheduling unit. The bi-directional charging and discharging device is respectively connected to the home loads, the power grid, the power battery, and the storage battery. The bi-directional charging and discharging device is used to transmit the electric energy of the power battery to the home loads and the power grid, and is also used to transmit the electric energy of the power grid and the storage battery to the power battery. The scheduling unit is connected to the bi-directional charging and discharging device and is used to control the bi-directional charging and discharging device to transmit the electric energy of the power battery to the home loads and / or the power grid, or to control the bi-directional charging and discharging device to transmit the electric energy of the power grid and / or the storage battery to the power battery based on the target energy scheduling strategy. Thus, the power battery can directly supply power to the home loads without the need for the transfer of electric energy through the storage battery, avoiding the power loss caused by the transfer of electric energy through the storage battery, effectively improving the energy utilization efficiency of the vehicle-home interconnection system. At the same time, in the case of a low battery level of the storage battery and a power grid failure, the power battery can supply power to the home loads, reducing the risk of power outage of relatively important loads in the home, and thus being able to ensure the power demand of the home loads to the greatest extent.

[0049] Based on the above inventive concept, the energy scheduling system provided by the embodiments of the present specification will be described exemplarily below.

[0050] Exemplary system

[0051] The embodiments of this specification provide an energy scheduling system, which is applied to a vehicle-home interconnection system. The vehicle-home interconnection system includes a vehicle and a home energy management system. The vehicle includes a power battery 103, and the home energy management system includes a storage battery 104 and a home load 105; As Figure 1 shown, the energy scheduling system includes a bi-directional charging and discharging device 101 and a scheduling unit 102; The bi-directional charging and discharging device 101 is respectively connected to the home load 105, the power grid 106, the power battery 103 and the storage battery 104;

[0052] The bi-directional charging and discharging device 101 is used to transmit the electric energy of the power battery 103 to the home load 105 and the power grid 106, and is also used to transmit the electric energy of the power grid 106 and the storage battery 104 to the power battery 103;

[0053] The scheduling unit 102 is connected to the bi-directional charging and discharging device 101, and is used to control the bi-directional charging and discharging device 101 to transmit the electric energy of the power battery 103 to the home load 105 and / or the power grid 106 based on a target energy scheduling strategy, or to control the bi-directional charging and discharging device 101 to transmit the electric energy of the power grid 106 and / or the storage battery 104 to the power battery 103.

[0054] Specifically, the bi-directional charging and discharging device 101 can adopt a bi-directional charging pile, and the bi-directional charging and discharging device 101 can be respectively connected to the home load 105, the power grid 106, the power battery 103 and the storage battery 104. Among them, through the bi-directional charging and discharging device 101, the electric energy of the power battery 103 can be transmitted to the home load 105 to supply power to the home load 105 through the power battery 103. In addition, through the bi-directional charging and discharging device 101, the electric energy of the power battery 103 can also be transmitted to the power grid 106 to feed back electric energy to the power grid 106 through the power battery 103. In addition, through the bi-directional charging and discharging device 101, the electric energy of the power grid 106 and the storage battery 104 can also be transmitted to the power battery 103 to charge the power battery 103 through the power grid 106 and / or the storage battery 104.

[0055] The scheduling unit 102 can be connected to the bi-directional charging and discharging device 101. For example, the scheduling unit 102 can be connected to the bi-directional charging and discharging device 101 by means of wire or wireless, etc.

[0056] During implementation, the scheduling unit 102 can control the bi-directional charging and discharging device 101 to transfer the electric energy of the power battery 103 to the household load 105 and / or the power grid 106 based on the target energy scheduling strategy. For example, the scheduling unit 102 can determine whether to control the bi-directional charging and discharging device 101 to transfer the electric energy of the power battery 103 to the household load 105 and / or the power grid 106 according to at least some of the data such as the remaining power of the energy storage battery 104, the remaining power of the power battery 103, the current operating state of the power grid 106 (such as, fault state, normal state), the electricity price change trend of the power grid 106, the load change trend of the power grid 106, the required electric energy of the household load 105, the driving plan of the vehicle, and the required electric energy for outdoor operations. Among them, when it is determined that it is necessary to control the bi-directional charging and discharging device 101 to transfer the electric energy of the power battery 103 to the household load 105 and / or the power grid 106, the time interval and power for the power battery 103 to supply power to the household load 105 and / or feed back electric energy to the power grid 106 can also be determined. Thus, it can be realized that the power battery 103 directly supplies power to the household load 105 without the need for the energy storage battery 104 to transfer electric energy, thereby avoiding the power loss caused by the transfer of electric energy through the energy storage battery 104, and being able to feed back the excess electric energy in the power battery 103 to the power grid 106, effectively improving the energy utilization efficiency of the vehicle-home interconnection system. At the same time, in case of emergencies such as low power of the energy storage battery 104 and power grid 106 failure, the power battery 103 can supply power to the household load 105, reducing the risk of power outage of relatively important loads in the household, and thus being able to ensure the electric energy demand of the household load 105 to the greatest extent.

[0057] In addition, the scheduling unit 102 can also control the bi-directional charging and discharging device 101 to transfer the electric energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103. For example, the scheduling unit 102 can determine whether to control the bi-directional charging and discharging device 101 to transfer the electric energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103 according to at least some of the data such as the remaining power of the energy storage battery 104, the remaining power of the power battery 103, the current operating state of the power grid 106 (such as, fault state, normal state), the electricity price change trend of the power grid 106, the load change trend of the power grid 106, and the required electric energy of the power battery 103. Among them, when it is determined that it is necessary to control the bi-directional charging and discharging device 101 to transfer the electric energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103, the time interval and power for the power grid 106 and / or the energy storage battery 104 to supply power to the power battery 103 also need to be determined, so as to effectively meet the charging demand of the power battery 103.

[0058] In implementation, the target energy scheduling strategy can be a pre-configured scheduling strategy, or a scheduling strategy input by the user, or a target energy scheduling strategy generated by comprehensively considering the pre-configured scheduling strategy and the energy scheduling requirement information input by the user. It can be understood that multiple scheduling strategies can also be pre-configured. For example, a scheduling strategy for minimizing electricity costs, a scheduling strategy for prioritizing vehicle charging requirements, a scheduling strategy for prioritizing household load power supply, etc. And according to the scheduling strategy selection signal or energy scheduling requirement information input by the user, the target energy scheduling strategy is determined from multiple scheduling strategies, so as to be able to perform energy scheduling flexibly and effectively, and further meet the energy scheduling requirements of diverse scenarios.

[0059] It can be understood that the scheduling unit 102 can also be connected to the power grid 106 and the energy storage battery 104. The scheduling unit 102 can also control the power grid 106 and / or the energy storage battery 104 to supply power to the household load 105 based on the target energy scheduling strategy, or control the energy storage battery 104 to feed back electric energy to the power grid 106. For example, the scheduling unit 102 can control the power grid 106 and / or the energy storage battery 104 to supply power to the household load 105, or control the energy storage battery 104 to feed back the excess electric energy to the power grid 106 based on at least some of the data such as the remaining power of the energy storage battery 104, the current operating state of the power grid 106 (such as, fault state, normal state), the electricity price change trend of the power grid 106, the load change trend of the power grid 106, the required electric energy of the household load 105, and the required electric energy of the power battery 103, so as to be able to maximize the energy utilization efficiency of the vehicle-home interconnection system and reduce the electricity cost of the vehicle-home interconnection system while ensuring the electric energy requirements of the household load 105 and the power battery 103.

[0060] In a feasible implementation manner, the household load 105 includes at least two levels of loads, and the power supply priorities of different levels of loads are different;

[0061] The scheduling unit 102 is specifically used for:

[0062] In the case where the remaining power of the energy storage battery 104 is less than the predetermined discharge threshold and the power grid 106 is in a fault state, obtain the maximum available electric energy of the power battery 103, and the required electric energy of each level of load in the household load 105;

[0063] Based on the maximum available electric energy of the power battery 103 and the required electric energy of each level of load in the household load 105, determine the target load among the levels of loads in the household load 105;

[0064] Based on the required electric energy of the target load, control the bidirectional charging and discharging device 101 to transmit the electric energy of the power battery 103 to the target load.

[0065] Specifically, the household load 105 may include multi-level loads. In implementation, the household load 105 can be divided into multiple levels according to the sensitivity of each household load 105 to power outage. The sensitivities of different-level loads to power outage are different. For any load, the higher the sensitivity of the load to power outage, the higher the power supply priority of the load. In implementation, in the case of insufficient power supply, the load with a higher power supply priority can be preferentially powered.

[0066] In implementation, when the remaining power of the energy storage battery 104 is less than a predetermined discharge threshold and the power grid 106 is in a fault state, it indicates that neither the energy storage battery 104 nor the power grid 106 can supply power to the household load 105. At this time, the maximum output power of the power battery 103 and the required power of each level of load in the household load 105 can be obtained, and based on the maximum output power of the power battery 103 and the required power of each level of load in the household load 105, the target load among the various levels of loads of the household load 105 can be determined. The target load is the load that needs to be powered by the power battery 103 among the various levels of loads of the household load 105.

[0067] The maximum output electrical energy of the power battery 103 is the maximum electrical energy that the power battery 103 can provide for the household load 105. Among them, the maximum output electrical energy of the power battery 103 can be determined based on the difference between the current remaining power of the power battery 103 and the target remaining power of the power battery 103. The target remaining power of the power battery 103 can be determined according to the maximum allowable discharge depth of the power battery 103 (e.g., 80%), that is, the target remaining power of the power battery 103 is the difference between 100% and the maximum allowable discharge depth of the power battery 103; in addition, the target remaining power of the power battery 103 can also be the required remaining power of the power battery 103. For example, the required remaining power of the power battery 103 can be the minimum value of the remaining power required for the power battery 103 to meet the power supply requirements during vehicle travel and / or outdoor operations. In implementation, the target remaining power of the power battery 103 can be determined according to the magnitude relationship between the priority of the power battery 103 for outdoor power supply and the priority of the power battery 103 for powering the household load 105. For example, when the priority of the power battery 103 for outdoor power supply is lower than the priority of the power battery 103 for powering the household load 105, the difference between 100% and the maximum allowable discharge depth of the power battery 103 can be used as the target remaining power of the power battery 103 to maximize the power demand of the household load 105. When the priority of the power battery 103 for outdoor power supply is higher than the priority of the power battery 103 for powering the household load 105, the required remaining power of the power battery 103 can be used as the target remaining power of the power battery 103 to maximize the power demand of the household load 105 on the premise of ensuring the power demand of the vehicle and outdoor operations.

[0068] Optionally, the magnitude relationship between the priority of the power battery 103 for outdoor power supply and the priority of the power battery 103 for powering the household load 105 can be a preset value, or can also be determined according to the user's selection signal for this magnitude relationship. For example, when the scheduling unit 102 determines that it is necessary to supply power to the household load 105 through the power battery 103, it can output a priority selection signal to the user terminal to determine the magnitude relationship between the priority of the power battery 103 for outdoor power supply and the priority of the power battery 103 for powering the household load 105 according to the selection signal input by the user.

[0069] For any level of load in the household load 105, the required electrical energy of this level of load can be the sum of the required electrical energies of each load in this level of load during the current energy scheduling period. Among them, for any load in this level of load, the required electrical energy of this load can be the predicted value of the required electrical energy of this load during the current energy scheduling period. For example, the predicted value of the required electrical energy of this load during the current energy scheduling period can be determined according to the historical operation data of this load, the start / stop time of this load input by the user, etc.

[0070] In implementation, during the process of determining the target load among the various-level loads of the household load 105 based on the maximum output power of the power battery 103 and the required power of the various-level loads in the household load 105, when the maximum output power of the power battery 103 is greater than or equal to the total required power of the various-level loads in the household load 105, all the various-level loads in the household load 105 can be used as the target load. And when the maximum output power of the power battery 103 is less than the total required power of the various-level loads in the household load 105, based on the maximum output power of the power battery 103, the required power of the various-level loads in the household load 105, and the power supply priority levels of the various-level loads, the target load among the various-level loads of the household load 105 is determined, that is, the power demand of the load with a higher power supply priority level is preferentially satisfied.

[0071] After determining the target load, based on the required power of each target load, the bidirectional charge and discharge device 101 can be controlled to transmit the electric energy of the power battery 103 to each target load respectively. Thus, in the case where the energy storage battery 104 and the power grid 106 cannot supply power to the household load 105, the power demand of the household load 105 can be maximally satisfied, and further the risk of power outage of the relatively important loads in the household is reduced.

[0072] In a feasible implementation manner, the scheduling unit 102 is specifically configured to:

[0073] Based on the maximum output power of the power battery 103 and the required power of the various-level loads in the household load 105, determine the target load among the various-level loads of the household load 105 in the order from high to low according to the power supply priority level.

[0074] Specifically, based on the maximum output power of the power battery 103 and the required power of the various-level loads in the household load 105, in the order from high to low according to the power supply priority level, it is determined in turn whether the various-level loads in the household load 105 meet the condition of being powered by the power battery 103, and the load that meets the condition of being powered by the power battery 103 is used as the target load. Among them, the load that meets the condition of being powered by the power battery 103 is the load that the power battery 103 has the ability to supply power to.

[0075] For example, the maximum output power of the power battery 103 can be iteratively compared with the total power demand of the first n loads in the order of decreasing power supply priority, where 1 ≤ n ≤ N and N is the total number of levels of the household loads 105, until n = N or the maximum output power of the power battery 103 is less than or equal to the total power demand of the first n loads, at which point the iteration ends, and the first n loads or the first n - 1 loads are taken as the target loads among the various loads of the household loads 105. For example, let n = 1. Compare the maximum output power of the power battery 103 with the total power demand of the first n loads. If the maximum output power of the power battery 103 is greater than the total power demand of the first n loads and n < N, then let n = n + 1, and repeat the comparison of the maximum output power of the power battery 103 with the total power demand of the first n loads; if the maximum output power of the power battery 103 is less than the total power demand of the first n loads and n > 1, then take the first n - 1 loads as the target loads among the various loads of the household loads 105 to preferentially meet the power demand of the household loads 105 with higher power supply priority. Thus, the power outage risk of the more important household loads 105 can be effectively reduced; if the maximum output power of the power battery 103 is less than the total power demand of the first n loads and n = 1, then take the nth load as the target load among the various loads of the household loads 105 to preferentially supply power to the most important household loads 105 when the maximum output power of the power battery 103 is limited, so as to reduce the power outage risk of the more important household loads 105; if the maximum output power of the power battery 103 is greater than or equal to the total power demand of the first n loads and n = N, then take all the loads in the household loads 105 as target loads to meet the operation requirements of the user for the household loads 105.

[0076] Thus, through the method of the embodiment of the present application, when neither the energy storage battery 104 nor the power grid 106 can supply power to the household loads 105, the power demand of the household loads 105 can be maximally met, thereby reducing the power outage risk of the more important loads in the household.

[0077] In a feasible implementation manner, the scheduling unit 102 is specifically configured to:

[0078] Determine the target power level of the power battery 103 based on the driving plan of the vehicle and the power demand for outdoor operations, where the power demand for outdoor operations is the power that needs to be provided by the power battery 103;

[0079] When the remaining power level of the power battery 103 is less than the target power level, control the bidirectional charging and discharging device 101 to transfer the power of the power grid 106 and / or the energy storage battery 104 to the power battery 103.

[0080] Specifically, the driving plan of the vehicle may include the departure time, destination, etc. of the vehicle. Outdoor operations may include outdoor operation items that require power supply from the power battery 103 of the vehicle, such as outdoor camping, etc. The required electrical energy for outdoor operations may be the electrical energy that needs to be provided by the power battery 103. Among them, the target consumed electrical energy for outdoor operations can be determined based on the outdoor operation item and the historical power consumption data of the outdoor operation item, and the required electrical energy for outdoor operations can be determined based on the target consumed electrical energy for outdoor operations. Among them, the driving plan of the vehicle and the outdoor operation item can be input by the user. For example, the scheduling unit 102 can be connected to the user terminal, and the user terminal can be a mobile terminal such as a mobile phone or a computer, or can also be a vehicle console, etc., and can be specifically set according to actual needs.

[0081] During the scheduling process, the scheduling unit 102 can determine the target power level of the power battery 103 based on the driving plan of the vehicle and the required electrical energy for outdoor operations. The target power level can be the target value of the remaining power level of the power battery 103 of the vehicle to ensure the electrical energy requirements for vehicle travel and outdoor operations. For example, the required electrical energy for vehicle travel can be determined based on data such as the driving plan of the vehicle and the driving habits of the driver, and the target power level of the power battery 103 can be determined based on the sum of the required electrical energy for vehicle travel and the required electrical energy for outdoor operations.

[0082] In implementation, when the remaining power level of the power battery 103 is greater than or equal to the target power level, the scheduling unit 102 can determine that the power battery 103 does not need to be charged, that is, there is no need to control the bidirectional charging and discharging device 101 to transfer the electrical energy of the power grid 106 and the energy storage battery 104 to the power battery 103. When the remaining power level of the power battery 103 is less than the target power level, the scheduling unit 102 can determine that the power battery 103 needs to be charged. At this time, the bidirectional charging and discharging device 101 can be controlled to transfer the electrical energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103. Among them, the scheduling unit 102 can determine the target time interval for the power grid 106 and / or the energy storage battery 104 to charge the power battery 103, and the charging power during the target time interval, based on at least some of the data such as the price change trend of the power grid 106, the load change trend of the power grid 106, the remaining power level of the energy storage battery 104, the required electrical energy of the power battery 103, and the user charging demand information, and control the bidirectional charging and discharging device 101 to transfer the electrical energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103 according to the target time interval and the charging power during the target time interval. For example, when the price of the power grid 106 is at the valley period, the power battery 103 is preferentially charged through the power grid 106, and when the price of the power grid 106 is at the peak period, the power battery 103 is preferentially charged through the energy storage battery 104, so as to effectively reduce the charging cost of the power battery 103 while ensuring the electrical energy requirements of the power battery 103.

[0083] It can be understood that after the power battery 103 is connected to the bidirectional charging and discharging device 101, the scheduling unit 102 can also immediately control the bidirectional charging and discharging device 101 to transmit the electric energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103 until the remaining power of the power battery 103 is greater than or equal to the target power of the power battery 103, so as to charge the power battery 103 at the first time after the power battery 103 is connected to the bidirectional charging and discharging device 101, and reduce the risk that the power battery 103 cannot be charged due to faults of the power grid 106, low remaining power of the energy storage battery 104, and faults of the bidirectional charging and discharging device 101, etc., so as to effectively meet the electric energy demand of the power battery 103.

[0084] In a feasible implementation manner, as Figure 2 shown, the vehicle further includes an in-vehicle photovoltaic system 201, and the in-vehicle photovoltaic system 201 is used to charge the power battery 103 of the vehicle and supply power to the load of the vehicle; specifically, the scheduling unit 102 is configured to:

[0085] Based on the driving plan of the vehicle, determine the driving demand electric energy of the vehicle, where the driving demand electric energy is the electric energy that needs to be provided by the power battery 103;

[0086] Based on the demand electric energy for outdoor operations and the driving demand electric energy of the vehicle, determine the target power of the power battery 103.

[0087] Specifically, the vehicle may further include an in-vehicle photovoltaic system 201, and the in-vehicle photovoltaic system 201 can be used to convert solar energy into electric energy, store the generated electric energy in the power battery 103, and / or supply power to the load of the vehicle. In addition, the electric energy output by the in-vehicle photovoltaic system 201 can also supply power to an external load connected to the vehicle and feed back electric energy to the power grid 106.

[0088] In implementation, the scheduling unit 102 can determine the driving demand electric energy of the vehicle based on the driving plan of the vehicle. The driving demand electric energy of the vehicle is the electric energy that needs to be provided by the power battery 103 during the driving process of the vehicle according to this driving plan.

[0089] For example, based on the destination and departure time in the vehicle's driving plan, etc., the target driving route can be determined, and based on the road conditions information of the target driving route and the driver's driving habit data, etc., the target driving duration can be determined. Thus, based on the departure time and the target driving duration, the target driving time interval can be determined, and based on the light intensity change trend of the target driving route within the target driving time interval, the electric energy that the in-vehicle photovoltaic system 201 can provide for the vehicle's load and the power battery 103 can be determined. For example, the in-vehicle photovoltaic system 201 can be preferentially used to supply power to the vehicle's load, and the remaining electric energy can be stored in the power battery 103 and / or fed back to the power grid 106. Among them, the light intensity change trend of the target driving time interval can be determined according to the environmental prediction data. At the same time, based on the road conditions information of the target driving route and the driver's driving habit data, etc., the required electric energy of the vehicle within the target time interval can be determined, and the difference between the required electric energy of the vehicle within the target time interval and the total electric energy provided by the in-vehicle photovoltaic system 201 for the vehicle's load and the power battery 103 can be used as the driving required electric energy of the vehicle.

[0090] Among them, based on the sum of the required electric energy for outdoor work and the driving required electric energy of the vehicle, the target power level of the power battery 103 can be determined. For example, when the sum of the driving required electric energy of the vehicle and the required electric energy for outdoor work is greater than or equal to the upper limit value of the remaining power level of the power battery 103, the upper limit value of the remaining power level of the power battery 103 can be used as the target power level of the power battery 103. When the sum of the driving required electric energy of the vehicle and the required electric energy for outdoor work is less than the upper limit value of the remaining power level of the power battery 103, the sum of the driving required electric energy of the vehicle and the required electric energy for outdoor work can be used as the target power level of the power battery 103, so that while ensuring the electric energy requirements for vehicle travel and outdoor work, the electricity consumption costs of the vehicle and outdoor work can be effectively reduced.

[0091] It can be understood that during the process of determining the required electric energy for outdoor work, based on the time interval of outdoor work and the light intensity change trend in the outdoor work area within the time interval of outdoor work, the electric energy that the in-vehicle photovoltaic system 201 can provide can be determined, and during outdoor work, the in-vehicle photovoltaic system 201 can be preferentially used to supply power for outdoor work and / or charge the power battery 103, and the difference between the target consumed electric energy and the total electric energy provided by the in-vehicle photovoltaic system 201 for outdoor work and the power battery 103 within the time interval of outdoor work can be used as the required electric energy for outdoor work.

[0092] In addition, the on-vehicle photovoltaic system 201 may include a first photovoltaic module and a first power conversion device disposed on the vehicle. After converting the direct current output by the first photovoltaic module into alternating current, the first power conversion device may store the converted power into the power battery 103 to supply power to the vehicle loads and feed it back to the power grid 106. The first power conversion device may be connected to the scheduling unit 102, and the scheduling unit 102 may control the first power conversion device to transmit the converted power to the vehicle loads, the power battery 103, and the power grid 106 according to the electricity price change trend of the power grid 106, the remaining power of the power battery 103, and the required power of the vehicle, so as to effectively improve the energy utilization efficiency of the on-vehicle photovoltaic system 201 while meeting the electricity demand of the vehicle.

[0093] In a feasible implementation, the scheduling unit 102 is specifically configured to:

[0094] Based on the first target data, determine the target time interval for the power grid 106 and / or the energy storage battery 104 to charge the power battery 103 and the charging power during the target time interval, where the first target data includes at least some of the electricity price change trend of the power grid 106, the load change trend of the power grid 106, the remaining power of the energy storage battery 104, the required electric energy of the power battery 103, and the user charging demand information;

[0095] Based on the target time interval and the charging power during the target time interval, control the bi-directional charging and discharging device 101 to transmit the power of the power grid 106 and / or the energy storage battery 104 to the power battery 103.

[0096] Specifically, the first target data may include at least some of the electricity price change trend of the power grid 106, the load change trend of the power grid 106, the remaining power of the energy storage battery 104, the required electric energy of the power battery 103, and the user charging demand information.

[0097] Among them, the electricity price change trend of the power grid 106 may be the electricity price change trend of the power grid 106 within the current energy scheduling period. Among them, based on the current electricity price of the power grid 106, the current date, and the current time, etc., through a pre-trained electricity price prediction model, the electricity price change trend of the power grid 106 within the current energy scheduling period may be predicted.

[0098] The load change trend of the power grid 106 can be the load change trend of the power grid 106 within the current energy scheduling period. Among them, based on the current load of the power grid 106, the current date, the current time, etc., through a pre-trained load prediction model, the load change trend of the power grid 106 within the current energy scheduling period can be predicted. Among them, the current load of the power grid 106 can be the current power consumption load of the community, which can be obtained by communicating with the power grid management system, etc.

[0099] The remaining power of the energy storage battery 104 can be the detected value of the remaining power of the energy storage battery 104 at the current moment.

[0100] The required electric energy of the power battery 103 can be the difference between the target remaining power of the power battery 103 and the current remaining power of the power battery 103. The current remaining power of the power battery 103 can be the detected value of the remaining power of the power battery 103 at the current moment. The target remaining power of the power battery 103 can be the target power of the power battery 103 determined according to the required electric energy for outdoor operations and the required electric energy for vehicle driving. It can also be the target value of the remaining power input by the user. It can also be the charging upper limit of the power battery 103 (for example, 80% of the capacity of the power battery 103), and can be specifically set according to actual requirements.

[0101] The user's charging demand information can include the charging time interval and charging power of the power battery 103, etc., and can include the target value of the remaining power of the power battery 103. In implementation, the user can input the charging demand information of the power battery 103 through the user terminal, so as to effectively meet the user's charging demand for the power battery 103.

[0102] In implementation, the scheduling unit 102 can determine the target time interval for the power grid 106 and / or the energy storage battery 104 to charge the power battery 103 and the charging power during the target time interval based on the first target data. The target time interval can include the time interval for charging the power battery 103 through the power grid 106, and can also include the time interval for charging the power battery 103 through the energy storage battery 104, and can also include the time interval for charging the power battery 103 through the power grid 106 and the energy storage battery 104 at the same time. For example, when the electricity price and load of the power grid 106 are both at the valley value period, the power grid 106 is preferentially used to charge the power battery 103. When the electricity price and / or the load of the power grid 106 are at the peak value period, the energy storage battery 104 is preferentially used to charge the power battery 103. For any target time interval, the charging power during the target time interval can be determined according to the charging power limit of the power battery 103, and can also be determined according to the discharge power limit of the power grid 106 and / or the energy storage battery 104.

[0103] Among them, the scheduling unit 102 can control the bi-directional charging and discharging device 101 to transfer the electric energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103 based on the target time interval and the charging power of the target time interval, so as to effectively reduce the charging cost while meeting the electric energy demand of the power battery 103, and meet the charging demand of the user for the power battery 103, ensuring the flexibility of charging the power battery 103.

[0104] In a feasible implementation, the scheduling unit 102 is specifically configured to:

[0105] When it is determined that the power battery 103 meets the grid connection condition based on the second target data, control the bi-directional charging and discharging device 101 to transfer the electric energy of the power battery 103 to the power grid 106;

[0106] Among them, the second target data includes at least some of the remaining power of the power battery 103, the target power of the power battery 103, the electricity price change trend of the power grid 106, the remaining power of the energy storage battery 104, and the required electric energy of the household load 105.

[0107] Specifically, the second target data may include at least some of the remaining power of the power battery 103, the target power of the power battery 103, the electricity price change trend of the power grid 106, the remaining power of the energy storage battery 104, and the required electric energy of the household load 105.

[0108] Among them, the remaining power of the power battery 103 may be the detected value of the remaining power of the power battery 103 at the current moment. The target power of the power battery 103 may be the target value of the remaining power of the power battery 103 determined based on the required electric energy for outdoor operations and the required electric energy for the vehicle's driving.

[0109] The electricity price change trend of the power grid 106 may be the electricity price change trend of the power grid 106 within the current energy scheduling period. Among them, based on the current electricity price of the power grid 106, the current date, and the current moment, etc., through a pre-trained electricity price prediction model, the electricity price change trend of the power grid 106 within the current energy scheduling period can be predicted.

[0110] The remaining power of the energy storage battery 104 may be the detected value of the remaining power of the energy storage battery 104 at the current moment.

[0111] The required electric energy of the household load 105 may include the total required electric energy of each level of load of the household load 105 within the current energy scheduling period.

[0112] During implementation, the scheduling unit 102 can determine whether the power battery 103 meets the grid connection conditions based on the second target data. For example, when the remaining power of the power battery 103 is greater than the target power of the power battery 103, the power of the energy storage battery 104 is greater than or equal to the required electric energy of the household load 105, and the electricity price of the power grid 106 is at the peak period, it is determined that the power battery 103 meets the grid connection conditions; otherwise, it is determined that the power battery 103 does not meet the grid connection conditions.

[0113] Among them, when the power battery 103 meets the grid connection conditions, the bidirectional charging and discharging device 101 can be controlled to transmit the electric energy of the power battery 103 to the power grid 106. When the power battery 103 does not meet the grid connection conditions, it is possible to continuously determine whether the power battery 103 meets the grid connection conditions according to the second target data, thereby effectively improving the energy utilization efficiency and benefits.

[0114] In a feasible implementation manner, as Figure 3 shown, the household energy management system further includes a household photovoltaic system 301, and the household photovoltaic system 301 is used to charge the energy storage battery 104 and supply power to the household load 105;

[0115] The scheduling unit 102 is further configured to:

[0116] Based on the third target data, control at least one of the household photovoltaic system 301, the energy storage battery 104, the power grid 106, and the power battery 103 to supply power to the household load 105, and / or control the household photovoltaic system 301 to feed back electric energy to the power grid 106;

[0117] Among them, the third target data includes at least some of the light intensity change trend in the area where the household photovoltaic system 301 is located, the required electric energy of the household load 105, the target power of the power battery 103, the remaining power of the power battery 103, the remaining power of the energy storage battery 104, the electricity price change trend of the power grid 106, the load change trend of the power grid 106, and the operating state of the power grid 106.

[0118] Specifically, the home energy management system may further include a home photovoltaic system 301. The home photovoltaic system 301 can be used to convert solar energy into electrical energy, store the generated electrical energy in the energy storage battery 104, and / or supply power to the home load 105. In addition, the electrical energy generated by the home photovoltaic system 301 can also charge the power battery 103 through the bidirectional charging and discharging device 101 and feed back to the power grid 106. Among them, the home photovoltaic system 301 may include a second photovoltaic module and a second electrical energy conversion device disposed in the home. After converting the direct current output by the second photovoltaic module into alternating current, the second electrical energy conversion device can store it in the energy storage battery 104, supply power to the home load 105, feed back to the power grid 106, and charge the power battery 103 through the bidirectional charging and discharging device 101. The second electrical energy conversion device can be connected to the scheduling unit 102, and the scheduling unit 102 can be used to control the flow direction of the electrical energy output by the home photovoltaic system 301.

[0119] The third target data may include at least some of the data such as the change trend of the light intensity in the area where the home photovoltaic system 301 is located, the required electrical energy of the home load 105, the target power level of the power battery 103, the remaining power level of the power battery 103, the remaining power level of the energy storage battery 104, the change trend of the electricity price of the power grid 106, the change trend of the load of the power grid 106, and the operating state of the power grid 106.

[0120] Among them, the change trend of the light intensity in the area where the home photovoltaic system 301 is located is the change trend of the light intensity in the area where the second photovoltaic module is located, which can be determined according to the environmental prediction data.

[0121] The required electrical energy of the home load 105 may include the total required electrical energy of each level of load of the home load 105 within the current energy scheduling cycle.

[0122] The target power level of the power battery 103 may be the target value of the remaining power level of the power battery 103 determined based on the required electrical energy for outdoor operations and the driving demand electrical energy of the vehicle. The remaining power level of the power battery 103 may be the detected value of the remaining power level of the power battery 103 at the current moment.

[0123] The remaining power level of the energy storage battery 104 may be the detected value of the remaining power level of the energy storage battery 104 at the current moment.

[0124] The change trend of the electricity price of the power grid 106 may be the change trend of the electricity price of the power grid 106 within the current energy scheduling cycle. Among them, based on the current electricity price of the power grid 106, the current date, the current moment, etc., through a pre-trained electricity price prediction model, the change trend of the electricity price of the power grid 106 within the current energy scheduling cycle can be predicted.

[0125] The load change trend of the power grid 106 can be the load change trend of the power grid 106 within the current energy scheduling period. Among them, based on the current load of the power grid 106, the current date, the current time, etc., through a pre-trained load prediction model, the load change trend of the power grid 106 within the current energy scheduling period can be predicted. Among them, the current load of the power grid 106 can be the current electricity consumption load of the community, and can be obtained by communicating with the power grid management system, etc.

[0126] The operating state of the power grid 106 can indicate that the power grid 106 is in a fault state or a normal state at the current moment. The operating state of the power grid 106 can be determined according to the detection values of the electrical signals (such as voltage, current, etc.) of the power grid 106 or by communicating with the power grid management system.

[0127] In implementation, the scheduling unit 102 can control at least one of the home photovoltaic system 301, the energy storage battery 104, the power grid 106, and the power battery 103 to supply power to the home load 105 based on the third target data, and / or control the home photovoltaic system 301 to feed back electric energy to the power grid 106. For example, the home photovoltaic system 301 can be preferentially used to supply power to the home load 105 and / or charge the power battery 103. And when the home photovoltaic system 301 cannot meet the power supply demand of the home load 105 and the charging demand of the power battery 103, the power grid 106 and the energy storage battery 104 are used to supply power to the home load 105 and / or charge the power battery 103. For example, when the electricity price of the power grid 106 is at the peak period or the power grid 106 fails, the energy storage battery 104 is preferentially used to supply power to the home load 105 and / or charge the power battery 103. When the electricity price of the power grid 106 is at the valley period and the power grid 106 operates normally, the power grid 106 is preferentially used to supply power to the home load 105 and / or charge the power battery 103. When the home photovoltaic system 301, the energy storage battery 104, and the power grid 106 cannot effectively output electric energy, the power battery 103 is used to supply power to the home load 105. In addition, when the electricity price of the power grid 106 is at the peak period and the energy storage battery 104 can meet the power supply demand of the home load 105 and the charging demand of the power battery 103, the home photovoltaic system 301 can be controlled to feed back the excess electric energy to the power grid 106 to improve the energy utilization efficiency and benefits.

[0128] Exemplary method

[0129] In an exemplary embodiment of the present specification, an energy scheduling method is further provided, which is applied to the energy scheduling system described in any of the above embodiments. The method includes:

[0130] Based on the target energy scheduling strategy, control the bi-directional charging and discharging device 101 to transfer the electric energy of the power battery 103 to the household load 105 and / or the power grid 106, or control the bi-directional charging and discharging device 101 to transfer the electric energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103.

[0131] In a feasible implementation, controlling the bi-directional charging and discharging device 101 to transfer the electric energy of the power battery 103 to the household load 105 includes:

[0132] When the remaining power of the energy storage battery 104 is less than a predetermined discharge threshold and the power grid 106 is in a fault state, obtain the maximum output electric energy of the power battery 103 and the required electric energy of each level of load in the household load 105;

[0133] Based on the maximum output electric energy of the power battery 103 and the required electric energy of each level of load in the household load 105, determine the target load among the loads at each level of the household load 105;

[0134] Based on the required electric energy of the target load, control the bi-directional charging and discharging device 101 to transfer the electric energy of the power battery 103 to the target load.

[0135] In a feasible implementation, based on the maximum output electric energy of the power battery 103 and the required electric energy of each level of load in the household load 105, determining the target load among the loads at each level of the household load 105 includes:

[0136] Based on the maximum output electric energy of the power battery 103 and the required electric energy of each level of load in the household load 105, determine the target load among the loads at each level of the household load 105 in the order of decreasing power supply priority.

[0137] In a feasible implementation, controlling the bi-directional charging and discharging device 101 to transfer the electric energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103 includes:

[0138] Based on the driving plan of the vehicle and the required electric energy for outdoor operations, determine the target power of the power battery 103, where the required electric energy for outdoor operations is the electric energy that needs to be provided by the power battery 103;

[0139] When the remaining power of the power battery 103 is less than the target power, control the bi-directional charging and discharging device 101 to transfer the electric energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103.

[0140] In a feasible implementation, the vehicle further includes an on-vehicle photovoltaic system 201, which is used to charge the power battery 103 of the vehicle and supply power to the loads of the vehicle;

[0141] Determining the target power level of the power battery 103 based on the driving plan of the vehicle and the required electrical energy for outdoor operations includes:

[0142] Based on the driving plan of the vehicle, determining the required electrical energy for driving of the vehicle, where the required electrical energy for driving is the electrical energy that needs to be provided by the power battery 103;

[0143] Based on the required electrical energy for outdoor operations and the required electrical energy for driving of the vehicle, determining the target power level of the power battery 103.

[0144] In a feasible implementation, controlling the bi-directional charging and discharging device 101 to transfer the electrical energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103 includes:

[0145] Based on first target data, determining the target time interval for the power grid 106 and / or the energy storage battery 104 to charge the power battery 103 and the charging power during the target time interval, where the first target data includes at least some of the data such as the electricity price change trend of the power grid 106, the load change trend of the power grid 106, the remaining power level of the energy storage battery 104, the required electrical energy of the power battery 103, and the user's charging demand information;

[0146] Based on the target time interval and the charging power during the target time interval, controlling the bi-directional charging and discharging device 101 to transfer the electrical energy of the power grid 106 and / or the energy storage battery 104 to the power battery 103.

[0147] In a feasible implementation, controlling the bi-directional charging and discharging device 101 to transfer the electrical energy of the power battery 103 to the power grid 106 includes:

[0148] Based on second target data, when it is determined that the power battery 103 meets the grid connection conditions, controlling the bi-directional charging and discharging device 101 to transfer the electrical energy of the power battery 103 to the power grid 106;

[0149] Wherein, the second target data includes at least some of the data such as the remaining power level of the power battery 103, the target power level of the power battery 103, the electricity price change trend of the power grid 106, the remaining power level of the energy storage battery 104, and the required electrical energy of the household load 105.

[0150] In a feasible embodiment, the home energy management system further includes a home photovoltaic system 301, which is used to charge the energy storage battery 104 and supply power to the home load 105;

[0151] The method further includes:

[0152] Based on the third target data, controlling at least one of the home photovoltaic system 301, the energy storage battery 104, the power grid 106, and the power battery 103 to supply power to the home load 105, and / or controlling the home photovoltaic system 301 to feed back electric energy to the power grid 106;

[0153] Wherein, the third target data includes at least some of the light intensity change trend in the area where the home photovoltaic system 301 is located, the required electric energy of the home load 105, the target power of the power battery 103, the remaining power of the power battery 103, the remaining power of the energy storage battery 104, the electricity price change trend of the power grid 106, the load change trend of the power grid 106, and the operating state of the power grid 106.

[0154] Exemplary vehicle-home interconnection system

[0155] In an exemplary embodiment of this specification, a vehicle-home interconnection system is further provided, which includes a vehicle, a home energy management system, and an energy scheduling system as described in any of the above embodiments.

[0156] Exemplary computer program product and storage medium

[0157] In addition to the above methods and devices, the energy scheduling method provided in the embodiments of this specification may also be a computer program product, which includes computer program instructions that, when run by a processor, cause the processor to execute the steps of the energy scheduling method according to various embodiments of this specification described in the "Exemplary Method" section above.

[0158] The computer program product can be written in any combination of one or more programming languages to execute the program code for the operations of the embodiments of this specification. The programming languages include object-oriented programming languages such as Java, C++, etc., and also include conventional procedural programming languages such as the "C" language or similar programming languages.

[0159] Furthermore, the embodiments of this specification also provide a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to perform the steps of the energy scheduling method according to various embodiments of this specification described in the "Exemplary Method" section above.

[0160] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the embodiments provided in this specification can include non-volatile and / or volatile memories. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0161] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0162] The above-described embodiments merely represent several implementation manners of this specification. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the solutions provided by the embodiments of this specification. It should be noted that for those of ordinary skill in the art, without departing from the concept of this specification, several modifications and improvements can still be made, and these all belong to the protection scope of this specification. Therefore, the protection scope of the patent of this specification should be subject to the appended claims.

Claims

1. An energy scheduling system, characterized in that, Applied to a vehicle-home interconnection system, the vehicle-home interconnection system includes a vehicle and a home energy management system. The vehicle includes a power battery, and the home energy management system includes a storage battery and home loads; the energy scheduling system includes a bi-directional charging and discharging device and a scheduling unit; the bi-directional charging and discharging device is respectively connected to the home loads, the power grid, the power battery and the storage battery; The bi-directional charging and discharging device is used to transfer the electric energy of the power battery to the home loads and the power grid, and is also used to transfer the electric energy of the power grid and the storage battery to the power battery; The scheduling unit is connected to the bi-directional charging and discharging device, and is used to control the bi-directional charging and discharging device to transfer the electric energy of the power battery to the home loads and / or the power grid, or control the bi-directional charging and discharging device to transfer the electric energy of the power grid and / or the storage battery to the power battery based on a target energy scheduling strategy.

2. The energy scheduling system according to claim 1, wherein The home loads include at least two levels of loads, and the power supply priorities of different levels of loads are different; The scheduling unit is specifically used for: When the remaining power of the storage battery is less than a predetermined discharge threshold and the power grid is in a fault state, obtaining the maximum available output power of the power battery and the required power of each level of load in the home loads; Based on the maximum available output power of the power battery and the required power of each level of load in the home loads, determining the target load among the levels of loads in the home loads; Based on the required power of the target load, controlling the bi-directional charging and discharging device to transfer the electric energy of the power battery to the target load.

3. The energy scheduling system according to claim 2, wherein The scheduling unit is specifically used for: Based on the maximum available output power of the power battery and the required power of each level of load in the home loads, determining the target load among the levels of loads in the home loads in the order of decreasing power supply priority.

4. The energy scheduling system according to claim 1, characterized in that The scheduling unit is specifically used for: Based on the driving plan of the vehicle and the required power of outdoor operations, determining the target power of the power battery, where the required power of outdoor operations is the electric energy that needs to be provided by the power battery; When the remaining power of the power battery is less than the target power, controlling the bi-directional charging and discharging device to transfer the electric energy of the power grid and / or the storage battery to the power battery.

5. The energy scheduling system according to claim 4, wherein The vehicle further includes an in-vehicle photovoltaic system, which is used to charge the power battery of the vehicle and supply power to the loads of the vehicle; the scheduling unit is specifically used for: Based on the driving plan of the vehicle, determining the required driving power of the vehicle, where the required driving power of the vehicle is the electric energy that needs to be provided by the power battery; Based on the required power of outdoor operations and the required driving power of the vehicle, determining the target power of the power battery.

6. The energy scheduling system according to claim 1, characterized in that The scheduling unit is specifically used for: Based on the first target data, determine the target time interval for the power grid and / or the energy storage battery to charge the power battery and the charging power during the target time interval, where the first target data includes at least some of the power price change trend of the power grid, the load change trend of the power grid, the remaining power of the energy storage battery, the required electric energy of the power battery, and the user charging demand information; Based on the target time interval and the charging power during the target time interval, control the bi-directional charging and discharging device to transfer the electric energy of the power grid and / or the energy storage battery to the power battery.

7. The energy scheduling system according to claim 1, wherein The scheduling unit is specifically configured to: Based on the second target data, when it is determined that the power battery meets the grid connection condition, control the bi-directional charging and discharging device to transfer the electric energy of the power battery to the power grid; wherein, the second target data includes at least some of the remaining power of the power battery, the target power of the power battery, the power price change trend of the power grid, the remaining power of the energy storage battery, and the required electric energy of the household load.

8. The energy scheduling system according to any one of claims 1 to 7, characterized in that The home energy management system further includes a home photovoltaic system, and the home photovoltaic system is used to charge the energy storage battery and supply power to the household load; The scheduling unit is further configured to: Based on the third target data, control at least one of the home photovoltaic system, the energy storage battery, the power grid, and the power battery to supply power to the household load, and / or control the home photovoltaic system to feed back electric energy to the power grid; wherein, the third target data includes at least some of the light intensity change trend in the area where the home photovoltaic system is located, the required electric energy of the household load, the target power of the power battery, the remaining power of the power battery, the remaining power of the energy storage battery, the power price change trend of the power grid, the load change trend of the power grid, and the operating state of the power grid.

9. An energy scheduling method, characterized in that, Applied to the energy scheduling system according to any one of claims 1 to 8, the method includes: Based on the target energy scheduling strategy, control the bi-directional charging and discharging device to transfer the electric energy of the power battery to the household load and / or the power grid, or control the bi-directional charging and discharging device to transfer the electric energy of the power grid and / or the energy storage battery to the power battery.

10. A vehicle-home interconnection system, characterized in that, It includes a vehicle, a home energy management system, and the energy scheduling system according to any one of claims 1 to 8.

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