Load power supply control method, power supply controller, control assembly, and charging pile

Abstract

Disclosed in the present application are a load power supply control method, a power supply controller, a control assembly and a charging pile. The method comprises: acquiring current power supply data corresponding to at least two first power supply modules; when the current power supply data meets a load power supply condition corresponding to a target load, determining a first power supply module as a second power supply module; when the number of the second power supply modules is one, determining the second power supply module as a target power supply module, and supplying power to the target load by using the target power supply module; and when the number of the second power supply modules is at least two, processing the at least two second power supply modules based on a preset evaluation condition, determining the target power supply module, and supplying power to the target load by using the target power supply module. In the present technical solution, a plurality of first power supply modules are used as an energy storage energy source to supply power to a target load, or grid-connected electricity selling is carried out to an alternating current power grid, so that the energy storage cost is reduced, and at the same time, security management is carried out on the plurality of first power supply modules, and the security of a household energy system is improved.

Description

Load power supply control method, power supply controller, control component and charging pile

[0001] This application is based on the Chinese invention application with application number 202311599210.2 filed on November 28, 2023, entitled "Load power supply control method, power supply controller, control component and charging pile", and claims its priority. Technical Field

[0002] The present application relates to the field of load power supply technology, and in particular to a load power supply control method, a power supply controller, a control component, and a charging pile. Background Art

[0003] At present, in order to improve energy utilization, energy storage systems are generally installed in households. During low-peak electricity consumption periods, the energy storage systems are charged through the AC power grid. When electricity prices rise or electricity consumption peaks, the energy storage systems are used to supply power to household loads.

[0004] However, batteries account for 60% of the total cost of energy storage systems. Furthermore, the energy density requirements for batteries in home energy storage systems are relatively low, resulting in short battery life, large size, and relatively weak safety features, which impact the user experience. Therefore, reducing the cost of energy storage systems and improving their safety have become pressing technical challenges.

[0005] Application Contents

[0006] The embodiments of the present application provide a load power supply control method, a power supply controller, a control component, and a charging pile to solve the problems of high cost and poor safety of existing home energy storage systems.

[0007] A load power supply control method, comprising:

[0008] Obtaining current power supply data corresponding to at least two first power supply modules;

[0009] When the current power supply data meets the load power supply condition corresponding to the target load, determining the first power supply module as the second power supply module;

[0010] When the number of the second power supply module is one, determining the second power supply module as a target power supply module, and using the target power supply module to supply power to the target load;

[0011] When the number of the second power supply modules is at least two, the at least two second power supply modules are processed based on a preset evaluation condition to determine a target power supply module, and the target power supply module is used to supply power to the target load.

[0012] Further, the current power supply data includes a current power supply voltage; and when the current power supply data satisfies a load power supply condition corresponding to the target load, determining the first power supply module as the second power supply module includes:

[0013] Obtaining a voltage fluctuation value of the first power supply module within a first preset time according to a current power supply voltage corresponding to the first power supply module;

[0014] If the voltage fluctuation value is not greater than the preset fluctuation value, it is determined that the current power supply data meets the load power supply condition corresponding to the target load, and the first power supply module is determined to be the second power supply module.

[0015] Furthermore, the processing of at least two of the second power supply modules based on a preset evaluation condition to determine a target power supply module includes:

[0016] Obtaining power supply priorities corresponding to at least two of the second power supply modules;

[0017] The second power supply module with the highest power supply priority is determined as the target power supply module.

[0018] Furthermore, the processing of at least two of the second power supply modules based on a preset evaluation condition to determine a target power supply module includes:

[0019] Obtaining a measured power value of each second power supply module and a load power value of a target load;

[0020] When the measured electric energy value is not less than the load electric energy value, determining the second power supply module as the third power supply module;

[0021] When the number of the third power supply module is one, determining the third power supply module as a target power supply module;

[0022] When the number of the third power supply modules is at least two, the third power supply module with the highest power supply priority is determined as the target power supply module.

[0023] Furthermore, if the target load is an AC load, the target power supply module is an AC grid, a solar module or an electric vehicle;

[0024] If the target load is an AC load and / or an electric vehicle, the target power supply module is an AC grid or a solar module.

[0025] Furthermore, the AC load includes a first AC load and a second AC load;

[0026] The adopting the target power supply module to supply power to the target load includes:

[0027] If the total power value of the first AC load and the second AC load is not greater than the first preset power, using the target power supply module to simultaneously supply power to the first AC load and the second AC load;

[0028] If the total power value of the first AC load and the second AC load is greater than a first preset power value, using the target power supply module to supply power to either the first AC load or the second AC load;

[0029] If the total power value of the first AC load and the second AC load is greater than a second preset power value, the target power supply module is controlled to stop supplying power to the first AC load and the second AC load.

[0030] A power supply controller is used to execute the above-mentioned charge and discharge control method.

[0031] A charging pile control component, including an electrical parameter acquisition module, a voltage conversion module, a switching circuit and the above-mentioned power supply controller;

[0032] The electrical parameter acquisition module is connected to at least two of the first power supply modules and is used to obtain current power supply data corresponding to the at least two first power supply modules;

[0033] The switching circuit is connected to at least two of the first power supply modules, the voltage conversion module and the target load, and is used to switch the power supply circuit;

[0034] The voltage conversion module is used to connect at least two of the first power supply modules and the target load, and is used for voltage conversion between the at least two of the first power supply modules and the target load;

[0035] The power supply controller is connected to the electrical parameter acquisition module, the switch circuit and the voltage conversion circuit.

[0036] Furthermore, the at least two first power supply modules include an AC power grid, a solar module, and an electric vehicle; the switching circuit includes a first switch, a second switch, a third switch, a fourth switch, and a fifth switch; and the target load includes a first AC load and a second AC load;

[0037] The first switch and the fourth switch are connected in series between the AC grid and the first AC load; the first switch and the fifth switch are connected in series between the AC grid and the second AC load;

[0038] The first end of the second switch is connected to the solar module, and the second end of the second switch is connected to the first connection end of the voltage conversion module;

[0039] A first end of the third switch is connected to the electric vehicle, and a second end of the third switch is connected to the second connection end of the voltage conversion module;

[0040] The third connection terminal of the voltage conversion module is connected to the connection node between the first switch and the fourth switch; the fourth connection terminal of the voltage conversion module is connected to the connection node between the first switch and the fifth switch;

[0041] The power supply controller is connected to the control ends of the first switch, the second switch, the third switch, the fourth switch, and the fifth switch.

[0042] A charging pile includes the above-mentioned charging pile control component.

[0043] The above-mentioned load power supply control method, power supply controller, control component and charging pile, the power supply controller obtains the current power supply data corresponding to at least two first power supply modules. When the current power supply data meets the load power supply conditions corresponding to the target load, the first power supply module is determined as the second power supply module to determine whether the first power supply module corresponding to the current power supply data can stably and reliably supply power to the target load. When the number of second power supply modules is one, the second power supply module is determined as the target power supply module, and the target power supply module is used to supply power to the target load. When the number of second power supply modules is at least two, at least two second power supply modules are processed based on preset evaluation conditions to determine the target power supply module, and the target power supply module is used to supply power to the target load, so as to realize the use of multiple first power supply modules as energy storage energy to supply power to the target load, or to sell electricity to the AC power grid, thereby reducing energy storage costs, and at the same time realizing safe management of multiple first power supply modules to improve the security of the home energy system. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0045] FIG1 is a flow chart of a load power supply control method according to an embodiment of the present application;

[0046] FIG2 is another flow chart of a load power supply control method according to an embodiment of the present application;

[0047] FIG3 is another flow chart of a load power supply control method according to an embodiment of the present application;

[0048] FIG4 is another flow chart of a load power supply control method according to an embodiment of the present application;

[0049] FIG5 is another flow chart of a load power supply control method according to an embodiment of the present application;

[0050] FIG6 is a schematic diagram of a power supply controller according to an embodiment of the present application;

[0051] FIG7 is a schematic diagram of a charging pile control component in an embodiment of the present application.

[0052] In the figure: 1. AC power grid; 2. Solar module; 3. Electric vehicle; 4. Charging pile control component; 41. Electrical parameter acquisition module; 42. Voltage conversion module; 43. Switching circuit; S431. First switch; S432. Second switch; S433. Third switch; S434. Fourth switch; S435. Fifth switch; 44. Power supply controller; 5. AC load; 51. First AC load; 52. Second AC load. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0054] It should be understood that the present application can be implemented in different forms and should not be interpreted as being limited to the embodiments set forth herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and will fully convey the scope of the present application to those skilled in the art.

[0055] In order to fully understand the present application, detailed structures and steps will be presented in the following description to illustrate the technical solutions proposed by the present application. The preferred embodiments of the present application are described in detail below. However, in addition to these detailed descriptions, the present application may also have other implementation methods.

[0056] This embodiment provides a load power supply control method, which is applied to a charging pile. Preferably, the charging pile is a V2G (Vehicle to Grid) charging pile. Specifically, the charging pile is applied in a home energy storage system. Optionally, the home energy storage system includes at least two first power supply modules. Preferably, the at least two first power supply modules include an AC power grid 1, a solar module 2, and an electric car 3. It can be understood that the power battery in the electric car 3 can be used as a power supply module to provide power. The charging pile includes a charging pile control component 4. For example, as shown in FIG7 , the charging pile control component 4 includes an electrical parameter acquisition module 41, a voltage conversion module 42, a switch circuit 43, and a power supply controller 44; the electrical parameter acquisition module 41 is connected to at least two first power supply modules and is used to obtain the current power supply data corresponding to the at least two first power supply modules; the switch circuit 43 is connected to at least two first power supply modules, the voltage conversion module 42, and the target load and is used to switch the power supply circuit; the voltage conversion module 42 is used to connect at least two first power supply modules and the target load and is used for voltage conversion between at least two first power supply modules and the target load; the power supply controller 44 is connected to the electrical parameter acquisition module 41, the switch circuit 43, and the voltage conversion circuit. It can be understood that the power supply controller 44 is used to execute the load power supply control method in this embodiment. In this embodiment, a V2G charging pile is set in a home energy storage system, and the renewable energy solar module 2 and the power battery of the electric vehicle 3 are used as energy storage energy to supply power to the home load, or to sell electricity to the AC grid 1, thereby reducing the energy storage cost. On the other hand, as an energy management center, the energy provided by the AC grid 1, the solar module 2 and the electric vehicle 3 is safely managed, thereby improving the safety of the home energy system and reducing the electricity cost.

[0057] This embodiment provides a load power supply control method, which is applied to the power supply controller 44, as shown in FIG1 , and includes:

[0058] S101: Obtain current power supply data corresponding to at least two first power supply modules.

[0059] S102: When the current power supply data meets the load power supply condition corresponding to the target load, the first power supply module is determined as the second power supply module.

[0060] S103: When the number of the second power supply modules is one, determine the second power supply module as a target power supply module, and use the target power supply module to supply power to the target load.

[0061] S104: When the number of the second power supply modules is at least two, the at least two second power supply modules are processed based on a preset evaluation condition, a target power supply module is determined, and the target power supply module is used to supply power to the target load.

[0062] Among them, the current power supply data refers to the power supply data collected from each first power supply module. Exemplarily, the current power supply data includes but is not limited to the power supply voltage, the power supply current and the power supply electric energy value. It can be understood that the power supply electric energy value is the energy generated by the action of the electric potential, and the unit is joule. The second power supply module refers to the first power supply module that meets the load power supply conditions. The load power supply condition refers to a custom set condition used to determine whether the first power supply module can supply power stably and reliably. The target load can be an AC load 5 or an electric vehicle 3. The target power supply module refers to the first power supply module used to power the target load. The preset evaluation condition refers to the condition used to determine the target power supply module from at least two second power supply modules.

[0063] As an example, in step S101, the power supply controller 44 obtains current power supply data corresponding to at least two first power supply modules, so as to determine whether the first power supply module can stably and reliably supply power to the target load based on the current power supply data, so as to ensure the safety and reliability of the power supply process.

[0064] As an example, in step S102, when the current power supply data satisfies the load power supply condition corresponding to the target load, the first power supply module is determined to be the second power supply module. In this embodiment, when the current power supply data satisfies the load power supply condition corresponding to the target load, it is determined that the first power supply module corresponding to the current power supply data can stably and reliably supply power to the target load, and therefore the first power supply module is determined to be the second power supply module.

[0065] As an example, in step S103, when the number of second power supply modules is one, the second power supply module is determined as the target power supply module, and the target power supply module is used to supply power to the target load. In this example, when only one second power supply module meets the load power supply condition, the second power supply module is directly determined as the target power supply module, and the target power supply module is used to supply power to the target load, thereby achieving stable and reliable power supply to the target load.

[0066] As an example, in step S104, when the number of second power supply modules is at least two, at least two second power supply modules are processed based on preset evaluation conditions to determine a target power supply module, and the target power supply module is used to power the target load. In this embodiment, when multiple second power supply modules all meet the load power supply conditions, it is necessary to further evaluate whether the second power supply modules meet the preset evaluation conditions to determine the target power supply module from the multiple second power supply modules. Optionally, the preset evaluation conditions can be based on a preset power supply priority, or can be based on the electric energy parameters of the second power supply modules to evaluate and determine the target power supply module, and it is sufficient to ensure that the preset evaluation conditions can reasonably determine the target power supply module from at least two second power supply modules, and there is no limitation here.

[0067] In this embodiment, the power supply controller 44 obtains current power supply data corresponding to at least two first power supply modules. When the current power supply data meets the load power supply condition corresponding to the target load, the first power supply module is determined as the second power supply module to determine whether the first power supply module corresponding to the current power supply data can stably and reliably supply power to the target load. When the number of second power supply modules is one, the second power supply module is determined as the target power supply module, and the target power supply module is used to supply power to the target load. When the number of second power supply modules is at least two, at least two second power supply modules are processed based on preset evaluation conditions to determine the target power supply module, and the target power supply module is used to supply power to the target load, so as to realize the use of multiple first power supply modules as energy storage energy to supply power to the target load, or to sell electricity to the AC power grid 1 in a connected manner, thereby reducing energy storage costs, and at the same time realizing safe management of multiple first power supply modules to improve the security of the home energy system.

[0068] In one embodiment, as shown in FIG2 , in step S102 , the current power supply data includes a current power supply voltage; when the current power supply data satisfies a load power supply condition corresponding to a target load, determining the first power supply module as the second power supply module includes:

[0069] S201: Acquire a voltage fluctuation value of the first power supply module within a first preset time according to a current power supply voltage corresponding to the first power supply module.

[0070] S202: If the voltage fluctuation value is not greater than the preset fluctuation value, it is determined that the current power supply data meets the load power supply condition corresponding to the target load, and the first power supply module is determined as the second power supply module.

[0071] The current supply voltage refers to the supply voltage of the first power supply module. The first preset time refers to a custom set time. The voltage fluctuation value refers to the change value of the current supply voltage within the first preset time.

[0072] As an example, in step S201, the power supply controller 44 obtains the voltage fluctuation value of the first power supply module within the first preset time based on the current power supply voltage corresponding to the first power supply module, so as to judge whether the first power supply module can stably and reliably supply power to the target load based on the voltage fluctuation value of the first power supply module within the first preset time.

[0073] As an example, in step S202, if the voltage fluctuation value is not greater than the preset fluctuation value, the current power supply voltage corresponding to the first power supply module is relatively stable, and the current power supply data is judged to meet the load power supply conditions corresponding to the target load, and the first power supply module is determined to be the second power supply module.

[0074] In this embodiment, the power supply controller 44 obtains the voltage fluctuation value of the first power supply module within the first preset time based on the current power supply voltage corresponding to the first power supply module. If the voltage fluctuation value is not greater than the preset fluctuation value, it is judged that the current power supply data meets the load power supply conditions corresponding to the target load, and the first power supply module is determined as the second power supply module, so that the first power supply module that can stably and reliably supply power to the target load is determined as the second power supply module, thereby ensuring safety and reliability during the power supply process.

[0075] In one embodiment, as shown in FIG3 , in step S104 , processing at least two second power supply modules based on a preset evaluation condition to determine a target power supply module includes:

[0076] S301: Obtain power supply priorities corresponding to at least two second power supply modules.

[0077] S302: Determine the second power supply module with the highest power supply priority as the target power supply module.

[0078] The power supply priority is a custom priority of the power supply module, which can be set according to actual experience or actual needs and is not limited here.

[0079] As an example, in step S301, a user may configure power supply priorities based on actual experience or needs and store them in a database. The power supply controller 44 then retrieves the power supply priorities corresponding to at least two second power supply modules from the database. Preferably, the power supply priorities, from highest to lowest, are: solar module 2, electric vehicle 3, AC grid 1.

[0080] As an example, in step S302, the second power supply module with the highest power supply priority is determined as the target power supply module. For example, the at least two second power supply modules can be at least two of the solar module 2, the electric vehicle 3, and the AC grid 1. The second power supply module with the highest power supply priority only needs to be determined as the target power supply module.

[0081] In this embodiment, when the number of second power supply modules is at least two, the power supply controller 44 obtains the power supply priorities corresponding to at least two second power supply modules, and determines the second power supply module with the highest power supply priority as the target power supply module, so as to determine a relatively suitable second power supply module as the target power supply module to power the target load, so as to safely manage the energy provided by at least two second power supply modules, improve the safety of the home energy system while reducing electricity costs.

[0082] In one embodiment, as shown in FIG4 , in step S104 , processing at least two second power supply modules based on a preset evaluation condition to determine a target power supply module includes:

[0083] S401: Obtaining the measured power value of each second power supply module and the load power value of the target load.

[0084] S402: When the measured electric energy value is not less than the load electric energy value, the second power supply module is determined as the third power supply module.

[0085] S403: When the number of the third power supply module is one, determine the third power supply module as the target power supply module.

[0086] S404: When the number of the third power supply modules is at least two, determine the third power supply module with the highest power supply priority as the target power supply module.

[0087] The measured power value refers to the power supply power value of the second power supply module actually tested at the current moment, and the load power value refers to the power supply power value required by the target load.

[0088] As an example, in step S401, the measured power value of each second power supply module and the load power value of the target load are obtained to determine whether the power supply capacity of the second power supply module meets the power supply demand of the target load.

[0089] As an example, in step S402, when the measured power value is not less than the load power value, the second power supply module is determined to be the third power supply module. In this embodiment, if the measured power value is less than or equal to the load power value of the target load, it indicates that the second power supply module may not be able to meet the power supply requirements of the target load, and forced power supply may pose a safety hazard. Therefore, the second power supply module whose measured power value is not less than the load power value is determined to be the third power supply module to ensure safety during the power supply process.

[0090] As an example, in step S403, when the number of third power supply modules is one, the third power supply module is determined as the target power supply module. For example, when there is only one third power supply module, such as solar module 2 or electric vehicle 3, solar module 2 or electric vehicle 3 is directly determined as the third power supply module.

[0091] As an example, in step S404, when there are at least two third power supply modules, the third power supply module with the highest power supply priority is determined as the target power supply module. For example, when there are at least two third power supply modules, such as solar module 2 and electric vehicle 3, the module with the highest power supply priority among solar module 2 and electric vehicle 3 is determined as the target power supply module based on the preset power supply priority.

[0092] It should be noted that when the at least two second power supply modules include AC grid 1, solar module 2, and electric vehicle 3, for AC grid 1, it is sufficient to determine whether AC grid 1 meets the load power supply conditions. It is only necessary to determine whether the measured power values ​​of solar module 2 and electric vehicle 3 are not less than the load power value. If the measured power values ​​of both solar module 2 and electric vehicle 3 are not less than the load power value, or if the measured power value of either solar module 2 or electric vehicle 3 is not less than the load power value, then, based on the power supply priority, the target power supply module is determined from among AC grid 1, solar module 2, and electric vehicle 3. If the measured power values ​​of both solar module 2 and electric vehicle 3 are greater than the load power value, then AC grid 1 is determined as the target power supply module.

[0093] In this embodiment, the power supply controller 44 obtains the measured power value of each second power supply module and the load power value of the target load. When the measured power value is not less than the load power value, the second power supply module is determined as the third power supply module. When the number of third power supply modules is one, the third power supply module is determined as the target power supply module. When the number of third power supply modules is at least two, the third power supply module with the highest power supply priority is determined as the target power supply module. The safety of the stable and reliable second power supply module is further evaluated, thereby ensuring the safety of the target power supply module during the power supply process.

[0094] In one embodiment, if the target load is an AC load 5, the target power supply module is the AC grid 1, the solar module 2 or the electric vehicle 3; if the target load is an AC load 5 and / or an electric vehicle 3, the target power supply module is the AC grid 1 or the solar module 2.

[0095] In this embodiment, when the target load is an AC load 5, the power supply controller 44 can stably and reliably select a target power supply module from the AC grid 1, solar module 2, or electric vehicle 3 based on the load power supply conditions and preset evaluation conditions. This allows the AC grid 1, solar module 2, or electric vehicle 3 to be used as a storage energy source to supply power to the target load, or to be connected to the AC grid 1 and sold to the grid, thereby reducing energy storage costs. If the target load is an electric vehicle 3 and / or an AC load 5, the AC grid 1 or the renewable energy solar module 2 is used as the target power supply module to improve energy utilization and reduce electricity costs.

[0096] In one embodiment, as shown in FIG5 , in step S103 and step S104 , the AC load 5 includes a first AC load 51 and a second AC load 52 ; and using a target power supply module to power the target load includes:

[0097] S501 : If the total power value of the first AC load 51 and the second AC load 52 is not greater than a first preset power, a target power supply module is used to supply power to the first AC load 51 and the second AC load 52 simultaneously.

[0098] S502 : If the total power value of the first AC load 51 and the second AC load 52 is greater than the first preset power, the target power supply module is used to supply power to either the first AC load 51 or the second AC load 52 .

[0099] S503 : If the total power value of the first AC load 51 and the second AC load 52 is greater than the second preset power, control the target power supply module to stop supplying power to the first AC load 51 and the second AC load 52 .

[0100] Among them, the first AC load 51 and the second AC load 52 are two different loads, and the user can determine the importance or priority between the two according to needs. The first preset electric energy and the second preset electric energy are both custom-set electric energy values, which are used to determine whether the total electric energy value of the first AC load 51 and the second AC load 52 is too large. The first preset electric energy is less than the second preset electric energy. It should be noted that the first preset electric energy and the second preset electric energy are determined according to the actual load capacity of the solar module 2 or the electric car 3. If the actual load capacity of the solar module 2 or electric car 3 configured by the user is strong, relatively large first preset electric energy and second preset electric energy can be set. If the actual load capacity of the solar module 2 or electric car 3 configured by the user is weak, relatively small first preset electric energy and second preset electric energy can be set to ensure that the first preset electric energy is less than the second preset electric energy. There is no restriction here.

[0101] As an example, in step S501, if the total electric energy value of the first AC load 51 and the second AC load 52 is not greater than the first preset electric energy, and the power supply requirements of the first AC load 51 and the second AC load 52 are within the actual load capacity of the solar module 2 or the electric vehicle 3, the target power supply module is used to simultaneously power the first AC load 51 and the second AC load 52, thereby ensuring safe power supply.

[0102] As an example, in step S502, if the total power value of the first AC load 51 and the second AC load 52 is greater than the first preset power value, and the power demand of the first AC load 51 and the second AC load 52 is close to the maximum actual load capacity of the solar module 2 or the electric vehicle 3, the target power supply module is used to power either the first AC load 51 or the second AC load 52. Power can be selected from the first AC load 51 and the second AC load 52 based on the user-configured priority or importance of the first AC load 51 and the second AC load 52, ensuring that important target loads receive power first.

[0103] As an example, in step S503, if the total power value of the first AC load 51 and the second AC load 52 is greater than the second preset power, and the power supply demand of the first AC load 51 and the second AC load 52 exceeds the actual load capacity of the solar module 2 or the electric vehicle 3, the target power supply module is controlled to stop supplying power to the first AC load 51 and the second AC load 52 to prevent overload and safety hazards, thereby improving the safety of the power supply process. It should be noted that at this time, if the power supply from the solar module 2 or the electric vehicle 3 does not meet the load power supply conditions or the preset assessment conditions, the power supply controller 44 switches the AC grid 1 to supply power to the first AC load 51 and the second AC load 52.

[0104] In this embodiment, if the total electric energy value of the first AC load 51 and the second AC load 52 is not greater than the first preset electric energy, the target power supply module is used to simultaneously supply power to the first AC load 51 and the second AC load 52; if the total electric energy value of the first AC load 51 and the second AC load 52 is greater than the first preset electric energy, the target power supply module is used to supply power to any one of the first AC load 51 and the second AC load 52; if the total electric energy value of the first AC load 51 and the second AC load 52 is greater than the second preset electric energy, the target power supply module is controlled to stop supplying power to the first AC load 51 and the second AC load 52, thereby supplying power according to the actual load capacity of the target power supply module and the load requirements of the first AC load 51 and the second AC load 52, thereby ensuring safety during the power supply process.

[0105] This embodiment provides a power supply controller 44 for use in the charge and discharge control method in the above embodiment.

[0106] In one embodiment, as shown in FIG6 , a power supply controller 44 is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the charge and discharge control method in the above embodiment is implemented. To avoid repetition, details are omitted here.

[0107] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the charge and discharge control method in the above embodiment is implemented. To avoid repetition, it is not described here.

[0108] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the 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-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. 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 various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0109] This embodiment provides a charging pile control component 4, as shown in Figure 7, including an electrical parameter acquisition module 41, a voltage conversion module 42, a switching circuit 43 and the power supply controller 44 in the above embodiment; the electrical parameter acquisition module 41 is connected to at least two first power supply modules, and is used to obtain the current power supply data corresponding to at least two first power supply modules; the switching circuit 43 is connected to at least two first power supply modules, the voltage conversion module 42 and the target load, and is used to switch the power supply circuit; the voltage conversion module 42 is used to connect at least two first power supply modules and the target load, and is used for voltage conversion between at least two first power supply modules and the target load; the power supply controller 44 is connected to the electrical parameter acquisition module 41, the switching circuit 43 and the voltage conversion circuit.

[0110] The voltage conversion module 42 is a bidirectional AC / DC conversion module. The electrical parameter acquisition module 41 can be an existing acquisition module as long as it can acquire the current power supply data corresponding to at least two first power supply modules. No limitation is imposed here.

[0111] In this embodiment, the power supply controller 44 executes the above-mentioned charge and discharge control method, and uses the electrical parameter acquisition module 41 to obtain the current power supply data corresponding to at least two first power supply modules. When the current power supply data meets the load power supply condition corresponding to the target load, the first power supply module is determined as the second power supply module; when the number of second power supply modules is one, the second power supply module is determined as the target power supply module. When the number of second power supply modules is at least two, at least two second power supply modules are processed based on preset evaluation conditions to determine the target power supply module, and at the same time, the switch circuit 43 is controlled to switch the power supply circuit corresponding to the target power supply module to be conductive, and the voltage conversion module 42 is controlled to perform voltage conversion so as to use the target power supply module to power the target load, so as to realize the use of multiple first power supply modules as energy storage energy to power the target load, or to sell electricity to the AC power grid 1 in parallel, thereby reducing energy storage costs, and at the same time realizing safe management of multiple first power supply modules to improve the security of the home energy system.

[0112] In one embodiment, at least two first power supply modules include an AC grid 1, a solar module 2, and an electric vehicle 3; a switch circuit 43 includes a first switch S431, a second switch S432, a third switch S433, a fourth switch S434, and a fifth switch S435; a target load includes a first AC load 51 and a second AC load 52; the first switch S431 and the fourth switch S434 are connected in series between the AC grid 1 and the first AC load 51; the first switch S431 and the fifth switch S435 are connected in series between the AC grid 1 and the second AC load 52; a first end of the second switch S432 is connected to the solar module 2, and a The second end is connected to the first connection end of the voltage conversion module 42; the first end of the third switch S433 is connected to the electric vehicle 3, and the second end of the third switch S433 is connected to the second connection end of the voltage conversion module 42; the third connection end of the voltage conversion module 42 is connected to the connection node between the first switch S431 and the fourth switch S434; the fourth connection end of the voltage conversion module 42 is connected to the connection node between the first switch S431 and the fifth switch S435; the power supply controller 44 is connected to the control ends of the first switch S431, the second switch S432, the third switch S433, the fourth switch S434 and the fifth switch S435.

[0113] In this embodiment, when the AC grid 1 is determined to be the target power supply module, the power supply controller 44 controls the first switch S431, the fourth switch S434, or the fifth switch S435 to conduct to supply power to the first and second AC loads 51, 52, or the electric vehicle 3, or controls the voltage conversion module 42 to convert the AC signal provided by the AC grid 1 into a DC signal to charge the electric vehicle 3. When the solar module 2 is determined to be the target power supply module, the power supply controller 44 controls the second switch S432 to conduct and controls the voltage conversion module 42 to convert the DC signal provided by the solar module 2 into an AC signal to supply power to the first and second AC loads 51, 52, or to charge the electric vehicle 3. When the electric vehicle 3 is determined to be the target power supply module, the power supply controller 44 controls the third switch S433 to conduct and controls the voltage conversion module 42 to convert the DC signal provided by the electric vehicle 3 into an AC signal to supply power to the first and second AC loads 51, 52. It can be understood that the power supply controller 44 controls the fourth switch S434 and the fifth switch S435 to operate according to the measured power values ​​of the solar module 2 and the electric vehicle 3 and the load power values ​​of the first AC load 51 and the second AC load 52, and according to steps S501-S503 in the above embodiment. To avoid repetition, they are not repeated here.

[0114] This embodiment provides a charging pile, including the above-mentioned charging pile control component 4.

[0115] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A load power supply control method, wherein: include: Obtaining current power supply data corresponding to at least two first power supply modules; When the current power supply data meets the load power supply condition corresponding to the target load, the first power supply module is determined as the second power supply module; When the number of the second power supply modules is one, determining the second power supply module as a target power supply module, and using the target power supply module to supply power to the target load; When the number of the second power supply modules is at least two, at least two of the second power supply modules are processed based on preset evaluation conditions to determine a target power supply module, and the target power supply module is used to supply power to the target load.

2. The load power supply control method according to claim 1, wherein: The current power supply data includes a current power supply voltage; and when the current power supply data satisfies a load power supply condition corresponding to the target load, determining the first power supply module as the second power supply module includes: According to the current power supply voltage corresponding to the first power supply module, obtaining a voltage fluctuation value of the first power supply module within a first preset time; If the voltage fluctuation value is not greater than the preset fluctuation value, it is determined that the current power supply data meets the load power supply condition corresponding to the target load, and the first power supply module is determined as the second power supply module.

3. The load power supply control method according to claim 1, wherein: The processing of at least two of the second power supply modules based on a preset evaluation condition to determine a target power supply module includes: Obtaining power supply priorities corresponding to at least two of the second power supply modules; The second power supply module with the highest power supply priority is determined as the target power supply module.

4. The load power supply control method according to claim 1, wherein: The processing of at least two of the second power supply modules based on a preset evaluation condition to determine a target power supply module includes: Obtaining a measured power value of each of the second power supply modules and a load power value of the target load; When the measured electric energy value is not less than the load electric energy value, determining the second power supply module as the third power supply module; When the number of the third power supply modules is one, determining the third power supply module as a target power supply module; When the number of the third power supply modules is at least two, the third power supply module with the highest power supply priority is determined as the target power supply module.

5. The load power supply control method according to any one of claims 1 to 4, wherein: If the target load is an AC load, the target power supply module is an AC power grid, a solar module or an electric vehicle; If the target load is an AC load and / or an electric vehicle, the target power supply module is an AC power grid or a solar module.

6. The load power supply control method according to claim 5, wherein: The AC load includes a first AC load and a second AC load; The adopting the target power supply module to supply power to the target load includes: If the total power value of the first AC load and the second AC load is not greater than the first preset power, using the target power supply module to supply power to the first AC load and the second AC load at the same time; If the total power value of the first AC load and the second AC load is greater than the first preset power, using the target power supply module to supply power to any one of the first AC load and the second AC load; If the total power value of the first AC load and the second AC load is greater than the second preset power, the target power supply module is controlled to stop supplying power to the first AC load and the second AC load.

7. A power supply controller, wherein: Used to execute the charge and discharge control method as described in any one of claims 1 to 6.

8. A charging pile control component, wherein: It comprises an electrical parameter acquisition module, a voltage conversion module, a switch circuit and the power supply controller according to claim 7; The electrical parameter acquisition module is connected to at least two of the first power supply modules and is used to obtain current power supply data corresponding to the at least two first power supply modules; The switch circuit is connected to at least two of the first power supply modules, the voltage conversion module and the target load, and is used to switch the power supply circuit; The voltage conversion module is used to connect at least two of the first power supply modules and the target load, and is used for voltage conversion between the at least two of the first power supply modules and the target load; The power supply controller is connected to the electrical parameter acquisition module, the switch circuit and the voltage conversion circuit.

9. The charging pile control component according to claim 8, wherein: The at least two first power supply modules include an AC power grid, a solar module and an electric vehicle; the switch circuit includes a first switch, a second switch, a third switch, a fourth switch and a fifth switch; the target load includes a first AC load and a second AC load; The first switch and the fourth switch are connected in series between the AC power grid and the first AC load; the first switch and the fifth switch are connected in series between the AC power grid and the second AC load; A first end of the second switch is connected to the solar module, and a second end of the second switch is connected to a first connection end of the voltage conversion module; A first end of the third switch is connected to the electric vehicle, and a second end of the third switch is connected to a second connection end of the voltage conversion module; The third connection terminal of the voltage conversion module is connected to the connection node between the first switch and the fourth switch; the fourth connection terminal of the voltage conversion module is connected to the connection node between the first switch and the fifth switch; The power supply controller is connected to control ends of the first switch, the second switch, the third switch, the fourth switch and the fifth switch.

10. A charging pile, wherein: Comprising a charging pile control component as described in claim 8 or 9.

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