Power supply control method and apparatus, energy storage device, and storage medium

Abstract

The present application belongs to the technical field of energy storage devices. Disclosed are a power supply control method and apparatus, an energy storage device, and a storage medium. The power supply control method comprises: testing first power supply parameters corresponding to a first priority scenario, the first power supply parameters at least comprising a power connection state and the current remaining capacity of an energy storage battery, the power connection state being used for indicating that electric power connected to the energy storage device is first electric power supplied via a direct current power input port and / or second electric power supplied via an alternating current power input port; and, on the basis of the power connection state and the current remaining capacity of the energy storage battery, controlling a power supply method in which the energy storage device supplies power to a connected external load. In the present solution, the method sets the corresponding first power supply parameters for the first priority scenario, obtains a result by means of testing the first power supply parameters, and controls the power supply method in which the energy storage device supplies power to the connected external load, thereby improving efficiency and adaptability of controlling the power supply method of the energy storage device.

Description

Power supply control method and device, energy storage device, and storage medium

[0001] The present application claims priority from the Chinese patent application No. CN202411340373.3 filed on September 24, 2024 and entitled "Power supply control method and device, energy storage device, and storage medium", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of energy storage devices, and in particular to a power supply control method and device, an energy storage device, and a storage medium. BACKGROUND

[0003] With the development of science and technology, various energy storage devices appear in people's daily life. Usually, users can charge the energy storage device, and when the daily power supply is insufficient, the energy storage device can be used to supply power to meet the needs of the time.

[0004] However, in the use process of the energy storage device, the charging / discharging control of the energy storage device always needs too much manual intervention and setting of the user, the intelligent degree of controlling the charging / discharging process of the energy storage device is low, the process of using the energy storage device is complex, and the energy storage device cannot automatically and flexibly adapt to different scene requirements, which has the problems of low efficiency and poor adaptability of the energy storage device control. SUMMARY

[0005] Therefore, the power supply control method and device, the energy storage device, and the storage medium provided by the embodiments of the present application are implemented as follows:

[0006] In one aspect, the present application provides a power supply control method applied to an energy storage device, wherein the energy storage device comprises at least one energy storage battery, and the method comprises:

[0007] detecting a first power supply parameter corresponding to a first priority scene, wherein the first power supply parameter at least comprises an energy access state and a current remaining energy of the energy storage battery, and the energy access state is used to indicate that the energy accessed by the energy storage device is first energy accessed through a direct current access port and / or second energy accessed through an alternating current access port;

[0008] controlling a power supply mode of the energy storage device for supplying power to a connected external load according to the energy access state and the current remaining energy of the energy storage battery.

[0009] In another aspect, the present application provides a power supply control device applied to an energy storage device, wherein the energy storage device comprises at least one energy storage battery, and the device comprises:

[0010] The first detection module is configured to detect a first power supply parameter corresponding to the first priority scenario, wherein the first power supply parameter comprises at least a power access state and a current remaining power of the energy storage battery, and the power access state is used to indicate whether the energy storage device accesses the first power through the DC power access port and / or the second power through the AC power access port.

[0011] The first control module is configured to control a power supply mode of the energy storage device for supplying power to the connected external load according to the power access state and the current remaining power of the energy storage battery.

[0012] In another aspect, the present application provides an energy storage device, which comprises a processor and a memory, wherein the memory stores a computer program, and the computer program is executed by the processor to implement the power supply control method according to any one of the above aspects.

[0013] In another aspect, the present application provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program is executed by the processor to implement the power supply control method according to any one of the above aspects.

[0014] In another aspect, the present application provides a computer program product, which, when running on a computer, causes the computer to execute the power supply control method according to any one of the above aspects.

[0015] In another aspect, the present application provides an application publishing platform, which is used to publish a computer program product, wherein the computer program product, when running on a computer, causes the computer to execute the power supply control method according to any one of the above aspects. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0017] FIG. 1 is a structural schematic diagram of an energy storage device according to an example embodiment of the present application;

[0018] FIG. 2 is a structural schematic diagram of an energy storage system in a household energy storage scenario according to an example embodiment of the present application;

[0019] FIG. 3 is a flowchart of a power supply control method according to an example embodiment of the present application;

[0020] FIG. 4 is a flowchart of a power supply control method according to an example embodiment of the present application;

[0021] FIG. 5 is an interface diagram of a setting interface according to an example embodiment of the present application;

[0022] FIG. 6 is a diagram of a charge-discharge platform curve of an energy storage battery according to an example embodiment of the present application;

[0023] FIG. 7 is a diagram of a connection structure of an energy storage device according to an example embodiment of the present application;

[0024] FIG. 8 is a diagram of a display interface of a display screen according to an example embodiment of the present application;

[0025] FIG. 9 is an interface diagram of a display interface according to an example embodiment of the present application;

[0026] FIG. 10 is an interface diagram of another display interface according to an example embodiment of the present application;

[0027] FIG. 11 is an interface diagram of another display interface according to an example embodiment of the present application;

[0028] FIG. 12 is an interface diagram of a setting interface according to an example embodiment of the present application;

[0029] FIG. 13 is an interface diagram of a display interface according to an example embodiment of the present application;

[0030] FIG. 14 is an interface diagram of another display interface of FIG. 13 according to an example embodiment of the present application;

[0031] FIG. 15 is an interface diagram of another display interface of FIG. 13 according to an example embodiment of the present application;

[0032] FIG. 16 is an interface diagram of another display interface of FIG. 13 according to an example embodiment of the present application;

[0033] FIG. 17 is an interface diagram of another display interface of FIG. 13 according to an example embodiment of the present application;

[0034] FIG. 18 is an interface diagram of another display interface of FIG. 13 according to an example embodiment of the present application;

[0035] FIG. 19 is a structural block diagram of a power supply control device according to an example embodiment of the present application;

[0036] FIG. 20 is a structural diagram of another example of a power supply control device according to an example embodiment of the present application. DETAILED DESCRIPTION

[0037] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, unless otherwise indicated, like numbers in the different drawings represent similar or analogous elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0038] The "multiple" mentioned herein refers to two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A existing alone, A and B existing together, and B existing alone. The character " / " generally represents an "or" relationship between the front and rear associated objects.

[0039] The scheme provided in the present application can be used in the real scenario of people using energy storage equipment for power supply in daily life. In order to facilitate understanding, the following first briefly introduces some terms and application scenarios related to the embodiments of the present application.

[0040] Mains electricity is also called AC (alternating current). The commonly used three quantities of AC are used to represent: voltage, current, and frequency. The commonly used AC power frequency in the world is 50Hz and 60Hz, and the distribution of civil AC voltage is from 100V to 380V. The machine room generally introduces 380V, 50HZ mains as power supply. In general, the power supply rectification module of ordinary equipment is mostly single-phase 220V voltage.

[0041] Green electricity can refer to the process of producing electricity, its carbon dioxide emissions are zero or close to zero, compared with other ways (such as coal power generation, natural gas power generation, nuclear power generation, etc.) The environmental impact of the power produced is lower. The main source of green electricity can be obtained by using solar energy, wind power, geothermal energy, biomass energy, etc.

[0042] Photovoltaic, also known as photovoltaic power generation system, is a power generation system that uses the photovoltaic effect of semiconductor materials to convert solar radiation energy into electrical energy. Photovoltaic power generation system is a clean, safe and renewable energy source that uses inexhaustible and inexhaustible solar energy. Photovoltaic power generation process does not pollute the environment and does not destroy the ecology.

[0043] Inverter discharge: refers to the process of converting DC power into AC power to supply power to other equipment, which can be achieved through an inverter.

[0044] Since the energy required by people has strong time and space, electricity is one of the most common. In order to reasonably use the electric energy and improve the energy utilization, it is necessary to store one form of energy through a medium or device into the same or another form of energy, and release it in a specific energy form based on future application needs. At present, the main way to generate green electricity is to develop photovoltaic, wind power and other green energy to replace fossil energy,

[0045] Since the generation of green electricity generally depends on photovoltaic, wind power, water potential and the like, and wind energy and solar energy have the problems of strong intermittency and large fluctuation, which will cause unstable power grid, insufficient electricity at peak load, too much electricity at low load, and unstable voltage will also cause damage to electricity. Therefore, due to insufficient electricity demand or insufficient grid acceptance capacity, the problem of "abandoning wind and light" may occur. To solve these problems, it is necessary to rely on energy storage. That is, the electric energy needs to be converted into other forms of energy through physical or chemical means for storage, and the energy is converted into electric energy for release when needed. In short, energy storage is similar to a large "power bank", which stores electric energy when photovoltaic and wind energy is sufficient, and releases the stored electric power when needed.

[0046] With the development of science and technology, various energy storage devices appear in people's daily life. When the daily power supply is insufficient, the amount of electricity stored by the energy storage device can be used for power supply, so as to be prepared for unexpected needs. For example, electrochemical energy storage, the energy storage device is equipped with a group of chemical batteries, which mainly use chemical elements in the battery as energy storage medium. The charging and discharging process is accompanied by chemical reaction or change of the energy storage medium. In short, the electric energy generated by wind and solar energy is stored in the chemical battery, and the stored electric energy is released for use when the external electric energy use reaches the peak, or is transferred to the place where the electric energy is in short supply for use.

[0047] For example, common energy storage devices include large-scale energy storage power stations applied in wind power and photovoltaic power stations, which can assist renewable energy generation to meet grid connection requirements and improve renewable energy utilization rate. As a high-quality active / reactive power regulation power source on the power supply side, the energy storage power station can realize load matching of electric energy in time and space, enhance renewable energy consumption capacity, reduce instantaneous power change, reduce impact on the power grid, and improve new energy power generation and consumption problems. It has great significance for power grid system backup, relieving peak load power supply pressure and peak regulation.

[0048] The energy storage container applied in the power grid side mainly functions in peak regulation, frequency regulation and relieving power grid congestion. It can realize peak clipping and valley filling of electric load, that is, charging the energy storage battery when the electric load is at low valley, and releasing the stored electric energy when the electric load is at high peak, so as to realize the balance between power production and consumption.

[0049] There are also small energy storage cabinets applied to the power consumption side, whose functions mainly include power self-generation and self-use, peak-valley price difference arbitrage, capacity cost management, and improvement of power supply reliability. According to different application scenarios, the power consumption side energy storage can be divided into industrial and commercial energy storage cabinets, household energy storage devices, energy storage charging piles, etc., which are generally used with distributed photovoltaic power. Industrial and commercial users can use energy storage for valley-peak price difference arbitrage and capacity cost management.

[0050] In the electricity market implementing peak-valley electricity price, the energy storage system is charged at low electricity price and discharged at high electricity price, realizing peak-valley price difference arbitrage and reducing electricity cost. In addition, industrial enterprises suitable for two-part electricity price can use the energy storage system to store energy at low electricity consumption and discharge at peak load, thereby reducing the maximum demand amount of sharp peak power and declaration, achieving the purpose of reducing capacity electricity cost. Household photovoltaic power storage can improve the level of power self-generation and self-use. Due to high electricity price and poor power supply stability, household photovoltaic power demand is driven. Considering that photovoltaic power is generated during the day and users generally have high load at night, by configuring energy storage, photovoltaic power can be better utilized, the level of self-generation and self-use can be improved, and electricity cost can be reduced. In addition, energy storage needs to be configured in the fields of communication base stations and data centers for backup power supply.

[0051] Please refer to FIG. 1, which shows a structural schematic diagram of an energy storage device according to an example embodiment of the present application. As shown in FIG. 1, the energy storage device includes a processor 110, a memory 120, a transceiver 130, a display unit 140, an input unit 150, a sensor 160, and a power module 170, etc.

[0052] The processor 110 is the control center of the energy storage device, connects all parts of the energy storage device through various interfaces and lines, executes various functions of the energy storage device and processes data by running or executing software programs and / or modules stored in the memory 120 and calling data stored in the memory 120, thereby overall monitoring the energy storage device. Optionally, the processor 110 can include one or more processing units; optionally, the processor 110 can integrate an application processor, which mainly processes operation devices, user interfaces, and application programs, etc., and of course, can also include other processors, which are not listed here.

[0053] The memory 120 can be used to store software programs and modules, and the processor 110 executes various function applications and data processing of the energy storage device by running the software programs and modules stored in the memory 120. The memory 120 can mainly include a program storage area and a data storage area, wherein the program storage area can store application programs required for operating the device, at least one function (such as a sound playing function, an image playing function, etc.), and the like; and the data storage area can store data (such as audio data, a phone book, etc.) created according to the use of the energy storage device, and the like. In addition, the memory 120 can include a high-speed random access memory, and can also include a non-volatile memory, for example, at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device.

[0054] The transceiver 130 can provide wireless communication solutions applied on the energy storage device, including wireless local area networks (WLAN) (for example, wireless fidelity (Wi-Fi) network), bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), and the like. The transceiver 130 can be one or more devices integrated with at least one communication processing module, for example, an antenna and a baseband processor integrated transceiver 130, or an antenna and a modem processor integrated transceiver 130, and the like, which are not limited herein.

[0055] The display unit 140 can be used to display information input by a user or information provided to a user and various menus of the energy storage device. The display unit 140 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), and the like, which are not limited herein.

[0056] The input unit 150 can be used to receive inputted digital or character information, and to generate key signal input related to user settings of the energy storage device and function control. Specifically, the input unit 150 can collect user operations thereon or nearby, and drive corresponding connection devices according to pre-set programs. In addition, the input unit 150 can include a touch panel, which can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel, the input unit 150 can further include other input devices. Specifically, the other input devices can include, but are not limited to, one or more of function keys (such as volume control buttons, switch buttons, etc.), trackballs, joysticks, etc.

[0057] The energy storage device can further include at least one sensor 160, such as a gyroscope sensor, a motion sensor, and other sensors. The motion sensor can include an acceleration sensor for detecting the magnitude of acceleration in various directions, and can detect the magnitude and direction of gravity when at rest, and can be used for applications that identify the posture of the energy storage device, such as landscape / portrait screen switching, related games, magnetometer posture calibration, etc. The energy storage device can also be configured with a manometer, a barometer, a hygrometer, a thermometer, an infrared sensor, and other sensors, which will not be described here.

[0058] The energy storage device further includes a power supply module 170 for supplying power to various components. Optionally, the power supply module 170 can be logically connected to the processor 110 through a power management device, so as to realize functions such as management of charging, discharging, and power consumption management through the power management device.

[0059] It can be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the energy storage device. In other embodiments of the present application, the energy storage device can include more or fewer components than illustrated, or combine certain components, or split certain components, or different component arrangements. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

[0060] Optionally, the energy storage device involved in the present application can be an outdoor cabinet type energy storage device, a portable energy storage power supply, a household energy storage all-in-one machine, a photovoltaic energy storage device, a wind energy storage device, etc. that can store electrical energy and provide electrical energy externally when needed to provide power supply functions.

[0061] Taking the outdoor cabinet-type energy storage device in a household energy storage scenario as an example, please refer to FIG. 2, which shows a structural schematic diagram of an energy storage system in a household energy storage scenario according to an example embodiment of the present application. As shown in FIG. 2, it contains an outdoor cabinet-type energy storage device 201, an electric energy conversion device 202 (a photovoltaic panel), a first user load 203 (a street lamp), a second user load 204 (such as a household appliance such as an air conditioner), and the like. Among them, the outdoor cabinet-type energy storage device 201 is a small energy storage box, which can be installed on the outdoor wall by wall hanging. In daily use, the photovoltaic panel can convert solar energy into electric energy during the low electricity price period, and the outdoor cabinet-type energy storage device 201 is used to store the electric energy and supply the street lamp and the household appliance for use during the peak electricity price period, or to supply power during the power grid outage / power failure.

[0062] Generally, the energy storage device can supply power to other external devices, and in terms of controlling the power supply mode, the energy storage device will set some hardware controls, and the user can control the energy storage device to discharge by inversion or by other means according to actual use. For example, a switch is provided on the energy storage device, and the user can control the energy storage device to discharge by inversion by setting the switch to the first path, or can control the energy storage device to discharge by mains by setting the switch to the second path. The control process always needs human intervention control, and the operation is complex. Moreover, even if some energy storage devices have provided intelligent control algorithms, the control of the power supply mode of the energy storage device is relatively single, always needs to execute a fixed judgment process or mode for control, and cannot flexibly adapt to various different scenarios, and there is a problem of low control efficiency and poor adaptability of the power supply of the energy storage device.

[0063] In order to solve the problems in the related art, improve the efficiency of using the energy storage device to supply power, and improve the adaptability of controlling the power supply mode, the present application provides a power supply control method, which can detect a first power supply parameter corresponding to a first priority scenario based on the first priority scenario, and control the change of the power supply mode according to the detection result of the first power supply parameter.

[0064] Please refer to FIG. 3, which shows a flowchart of a power supply control method according to an example embodiment of the present application. The power supply control method is used in an energy storage device, and the energy storage device includes at least one energy storage battery. As shown in FIG. 3, the power supply control method can include the following steps:

[0065] Step 301, detecting a first power supply parameter corresponding to a first priority scenario, the first power supply parameter at least including an electric energy access state and a current remaining electric quantity of the energy storage battery; the electric energy access state is used to indicate that the electric energy accessed by the energy storage device is first electric energy accessed through a direct-current electric access port and / or second electric energy accessed through an alternating-current electric access port.

[0066] Optionally, in this scheme, the energy storage device can determine its own power supply detection scenario, and different power supply detection scenarios correspond to different power supply conditions. For example, in the energy storage device, the corresponding power supply conditions of different power supply detection scenarios can be set in advance. In different power supply detection scenarios, if the energy storage device needs to be powered, the power supply condition corresponding to the current power supply detection scenario can be detected to control the power supply.

[0067] Optionally, the number of power supply detection scenarios can be flexibly set by the developer, such as including a first priority scenario, a second priority scenario, etc., and corresponding first power supply parameters are set for various scenarios. Among them, in the first priority scenario, the first power supply parameter at least includes the power access state and the current remaining power of the energy storage battery; the power access state is used to indicate that the power accessed by the energy storage device is the first power accessed through the direct current access port and / or the second power accessed through the alternating current access port.

[0068] Optionally, the energy storage device usually includes a direct current access port and an alternating current access port. The detection of the first power supply parameter set for the first priority scenario in this scheme includes the detection of the power access state of the energy storage device, which includes the state of accessing only the first power through the direct current access port, the state of accessing only the second power through the alternating current access port, and the state of accessing both the first power through the direct current access port and the second power through the alternating current access port. The first power is equivalent to the power corresponding to the input direct current, and the second power is equivalent to the power corresponding to the input alternating current.

[0069] In one possible implementation, the energy storage device can detect the first power and the second power accessed through the direct current access port and the alternating current access port in the following manner. For example, the energy storage device can determine the voltage accessed by the energy storage device. If the accessed voltage is about 176V, it can be determined that the accessed power is the second power (i.e., mains), and if the accessed voltage is about 9V, it is the first power (i.e., green power). Among them, about 176V can be in the range of 171 to 181V, and about 9V can be in the range of 6V to 12V. The specific numerical range can be flexibly set, which is not limited here.

[0070] Optionally, in the case where the number of energy storage batteries is greater than or equal to two, the current remaining power of the energy storage battery can refer to the total remaining power of each energy storage battery included in the entire energy storage device.

[0071] Optionally, the energy storage device can determine the current power supply detection scene based on the judgment condition of the power supply detection scene. For example, an indicator can be set in the energy storage device, and the scene indication value can indicate which power supply detection scene the energy storage device is currently in. The energy storage device can obtain the indicator to determine the current power supply detection scene. For example, if the indicator is 1, it indicates that the energy storage device is in the first priority scene, and if the indicator is 0, it indicates that the energy storage device is in the second priority scene.

[0072] Optionally, since the first power supply parameter corresponding to different power supply detection scenes is different, when the energy storage device detects the first power supply parameter, it needs to detect the first power supply parameter corresponding to the current power supply detection scene. For example, the first power supply parameter corresponding to the first priority scene includes at least the power access state and the current remaining capacity of the energy storage battery. If the power supply detection scene is the first priority scene, the first power supply parameter detected here is the power access state and the current remaining capacity of the energy storage battery corresponding to the first priority scene.

[0073] Step 302, according to the power access state and the current remaining capacity of the energy storage battery, controlling the energy storage device to supply power to the connected external load.

[0074] That is, the energy storage device controls the power supply mode of the energy storage device according to the detection result of detecting the first power supply parameter corresponding to the power supply detection scene. The power supply mode of the energy storage device can also include multiple power supply modes, and different detection results correspond to one power supply mode. The detection result obtained by detection determines which power supply mode to supply power.

[0075] For example, when the power access state is state one, and the current remaining capacity of the energy storage battery is in the first capacity range, the power supply mode of the energy storage device to supply power to the connected external load can be power supply mode one. When the power access state is state two, and the current remaining capacity of the energy storage battery is in the first capacity range, the power supply mode of the energy storage device to supply power to the connected external load can be power supply mode two, and so on. The specific power supply mode is determined by the specific situation, which is not limited here.

[0076] It should be noted that since the present scheme is to control the power supply mode of the energy storage device, the above step 301 can be executed when the energy storage device currently needs to supply power to the external device connected to it. Of course, if power supply is not needed, the process of the present scheme can not be executed.

[0077] In summary, the energy storage device detects a first power supply parameter corresponding to the first priority scenario, and the first power supply parameter at least includes an energy access state and a current remaining capacity of the energy storage battery. The energy access state is used to indicate whether the energy accessed by the energy storage device is the first energy accessed through the DC power inlet and / or the second energy accessed through the AC power inlet. According to the energy access state and the current remaining capacity of the energy storage battery, the energy storage device controls the power supply mode of the connected external load. In this scheme, by setting the corresponding first power supply parameter for the first priority scenario, the first power supply parameter at least includes the energy access state and the current remaining capacity of the energy storage battery, and the power supply mode of the connected external load is controlled by the energy storage device according to the result of detecting the first power supply parameter. The detection requirement in a specific scenario can be met, the power supply mode is flexibly controlled according to different scenarios and corresponding first power supply parameters, and the efficiency and adaptability of controlling the power supply mode of the energy storage device are improved.

[0078] In the following, taking that the user can set different power supply detection scenarios and corresponding first power supply parameters in the energy storage device as an example, when the energy storage device detects the determined power supply detection scenario, the corresponding first power supply parameter set by the user can be detected. The efficiency of controlling the power supply of the energy storage device is improved without detecting each condition according to a fixed detection mode.

[0079] Please refer to FIG. 4, which shows a flowchart of a power supply control method according to an example embodiment of the present application. The power supply control method is used in an energy storage device, and the energy storage device includes at least one energy storage battery. As shown in FIG. 4, the power supply control method can include the following steps:

[0080] Step 401: Detect a power supply detection scenario of the energy storage device. The power supply detection scenario includes a first priority scenario and a second priority scenario.

[0081] Optionally, different power supply detection scenarios can be pre-edited and set by a developer or a user. The energy storage device detects different first power supply parameters in different power supply detection scenarios, which facilitates flexible changes of the energy storage device.

[0082] In a possible implementation manner, the energy storage device further includes a target switch. A switch state of the target switch is used to indicate different power supply detection scenarios. The energy storage device determines the power supply detection scenario of the energy storage device as follows: obtaining the switch state of the target switch; and determining the power supply detection scenario corresponding to the switch state according to the switch state. The switch state can indicate the conduction position of the target switch. For example, the developer can set the target switch at different conduction positions when designing the energy storage device. Different conduction positions correspond to different switch states.

[0083] Optionally, the number of switch states is the same as the number of power supply detection scenarios. For example, the energy storage device is provided with three power supply detection scenarios, and the number of switch states is also three. For example, the power supply detection scenarios include detection scenario one, detection scenario two, and detection scenario three, and the switch states also include state 1, state 2, and state 3. If the obtained switch state is state 1, it is determined that the power supply detection scenario corresponding to state 1 is detection scenario one; if the obtained switch state is state 2, it is determined that the power supply detection scenario corresponding to state 2 is detection scenario two; and if the obtained switch state is state 3, it is determined that the power supply detection scenario corresponding to state 3 is detection scenario three.

[0084] The user can set the target switch at any position according to his own needs. When the energy storage device executes the scheme, the corresponding power supply detection scenario can be determined through the switch state. For example, the user sets the target switch at the first position, and the switch state corresponding to the first position is state 1. Therefore, the determined power supply detection scenario is detection scenario one.

[0085] Optionally, the target switch is provided with an indicator light, and the display color of the indicator light is different in different switch states. For example, the indicator light displays red when the target switch is in state 1, the indicator light displays green when the target switch is in state 2, and the indicator light displays yellow when the target switch is in state 3. Through different colors, the user can be prompted about the power supply detection scenario in which the energy storage device is currently located.

[0086] In one possible implementation, the energy storage device can determine the power supply detection scenario of the energy storage device in the following manner: obtaining the total amount of utility output of the energy storage device, the total amount of utility output being the total amount of utility power supply of the energy storage device; and determining the power supply detection scenario of the energy storage device according to the total amount of utility output. For example, the energy storage device can record the total amount of utility power supply of itself, obtain the total amount of utility output provided so far, and determine the power supply detection scenario of the energy storage device according to whether the total amount of utility output exceeds the preset total amount of utility. The preset total amount of utility can be set by the developer in advance or set by the user independently.

[0087] For example, the preset total amount of utility is X kilowatt-hours. If the total amount of utility output does not exceed the preset total amount of utility, it can be determined that the power supply detection scenario of the energy storage device is detection scenario one. If the total amount of utility output exceeds the preset total amount of utility, it can be determined that the power supply detection scenario of the energy storage device is detection scenario two. The detection scenario one and the detection scenario two mentioned here are naming identifiers for different scenarios, and are exemplary. For example, the detection scenario one can be a utility priority scenario, and the detection scenario two can be a green power priority scenario.

[0088] In a possible implementation, the energy storage device can include a display screen, and the display screen is further configured to display a setting interface, the setting interface including a first selection control corresponding to different power supply detection scenarios and a second selection control corresponding to different power supply parameters; the energy storage device can establish a corresponding relationship between a target power supply detection scenario selected by the first selection control in the setting interface and a target power supply parameter selected by the second selection control.

[0089] Please refer to FIG. 5, which shows an interface diagram of a setting interface according to an example embodiment of the present application. As shown in FIG. 5, the setting interface 500 includes a first selection control 501, a second selection control 502, a determination control 503, a cancellation control 504, and an addition control 505. The first selection control is configured to select each power supply detection scenario provided by the energy storage device, and the second selection control is configured to select a corresponding first power supply parameter. A user can select any power supply detection scenario as a target power supply detection scenario by triggering the first selection control 501, and select any first power supply parameter or multiple first power supply parameters as target first power supply parameters by triggering the second selection control 502. After triggering the determination control 503, the energy storage device can establish a corresponding relationship between the power supply detection scenario selected by the user and the first power supply parameter, i.e., a corresponding relationship between the target power supply detection scenario and the target first power supply parameter. Subsequently, the energy storage device can know which first power supply parameters need to be detected in which power supply detection scenario according to the corresponding relationship. The user can also add a new power supply detection scenario and a corresponding first power supply parameter by triggering the addition control 505.

[0090] In a possible implementation, the energy storage device can also be communicatively connected with a terminal device. Optionally, the terminal device is a chargeable terminal device, such as, but not limited to, a wearable device (e.g., a bracelet, a smart watch, smart glasses, etc.), a mobile phone, a tablet computer, a notebook computer, smart glasses, a smart watch, an MP4 (Moving Picture Experts Group Audio Layer IV) player, a desktop computer, a laptop computer, etc.

[0091] For example, the energy storage device and the terminal device can be connected through a near field wireless communication connection, and the energy storage device can interact with the terminal device. For example, the energy storage device can receive a setting instruction sent by the terminal device, the setting instruction carrying a target power supply detection scenario and a target power supply parameter, and establish a corresponding relationship between the target power supply detection scenario and the target power supply parameter.

[0092] That is, the power supply detection scene of the energy storage device and the corresponding power supply parameter can be set through the terminal device. Referring to FIG. 5, a similar setting interface can also be displayed in the terminal device. After the user triggers the determination control, the terminal device can send a setting instruction to the energy storage device. The setting instruction includes the target power supply detection scene and the corresponding target power supply parameter set by the user in the terminal device. After receiving the setting instruction, the energy storage device analyzes the setting instruction and establishes a corresponding relationship between the target power supply detection scene and the target power supply parameter included in the setting instruction.

[0093] It should be noted that, whether set by the energy storage device itself or by the terminal device, different power supply detection scenes correspond to pre-stored power supply parameters in the energy storage device. In subsequent detection, the power supply parameter corresponding to the current power supply detection scene of the energy storage device is detected, and other redundant power supply parameters do not need to be detected. In terms of control, it is not necessary to detect in a fixed detection order or manner, which reduces the amount of data processing and improves control efficiency. In another case, the power supply detection scenes and the corresponding power supply parameters can also be fixed in the firmware before the energy storage device is shipped (i.e., already exist in the energy storage device). The present solution does not limit how to set it.

[0094] Taking the first priority scene and the second priority scene as examples, in the case of the first priority scene, the first power supply parameter at least includes the power access state and the current remaining power of the energy storage battery. In the case of the second priority scene, the second power supply parameter at least includes the power access state.

[0095] In step 402, the power supply detection scene of the energy storage device is the first priority scene, and the first power supply parameter corresponding to the first priority scene is detected.

[0096] In this embodiment, taking the first priority scene as a green electricity priority scene as an example, the energy storage device needs to detect the first power supply parameter corresponding to the green electricity priority scene. The first power supply parameter at least includes the power access state and the current remaining power of the energy storage battery; the power access state is used to indicate that the energy storage device accesses the first energy through the direct current access port and / or the second energy through the alternating current access port.

[0097] In hardware, the energy storage device comprises a direct current (DC) interface and an alternating current (AC) interface. The DC interface is configured to receive first electric energy generated by renewable energy. The first power supply parameter comprises at least a condition for the DC interface to receive the first electric energy. For example, the DC interface can receive first electric energy generated by photovoltaic power generation or wind power generation. Here, the DC interface is a general term. In actual applications, the interfaces corresponding to various renewable energy sources can be the same or different. That is, the energy storage device can be provided with independent interfaces to receive first electric energy generated by each renewable energy source. The AC interface is configured to receive second electric energy provided by a power grid.

[0098] Optionally, when the DC interface receives the first electric energy generated by the renewable energy, the electric energy receiving state in the first power supply parameter is that the first electric energy is received. When the AC interface receives the second electric energy provided by the power grid, the electric energy receiving state is that the second electric energy is received. When both interfaces receive respective electric energy, the electric energy receiving state is that the first electric energy and the second electric energy are received. That is, the electric energy receiving state includes a state in which only the first electric energy is received through the DC interface, a state in which only the second electric energy is received through the AC interface, and a state in which both the first electric energy and the second electric energy are received through the DC interface and the AC interface.

[0099] Optionally, the detection of the current residual electric quantity in the first power supply parameter can be as follows. The size relationship between the current residual electric quantity of the energy storage battery and the first preset electric quantity threshold is detected. Then, the detection result includes that the current residual electric quantity of the energy storage battery is greater than or equal to the first preset electric quantity threshold, or the current residual electric quantity of the energy storage battery is less than the first preset electric quantity threshold.

[0100] Optionally, the first preset electric quantity threshold is selected from an electric quantity interval that is centered on the battery state of charge corresponding to the intersection of the stable voltage platform segment and the second voltage descending segment in the discharge platform curve of the energy storage battery and that is up and down floating by a first preset proportion. Please refer to FIG. 6, which shows a schematic diagram of a charge-discharge platform curve of an energy storage battery according to an example embodiment of the present application, including a charge platform curve 601 and a discharge platform curve 602. As shown in FIG. 6, the charge platform curve 601 includes a stable voltage platform segment 601a, and the discharge platform curve 602 includes a first descending segment 602a and a second descending segment 602b. In the discharge platform curve, as the remaining electric quantity of the energy storage battery decreases, the voltage of the energy storage battery also decreases, and in the charge platform curve, as the remaining electric quantity of the battery increases, the voltage of the energy storage battery also increases. In the discharge platform curve 602, the second descending segment 602b corresponds to a SOC of the energy storage battery of 0% to 30%, and the intersection with the stable voltage platform segment 601a is about 30%. Assuming that the battery state of charge corresponding to the intersection is 30%, in the present solution, the first preset electric quantity threshold can be taken as the SOC value of 30%. That is, the first preset electric quantity threshold is 30%, and when detecting the current remaining electric quantity, it is determined whether the current remaining electric quantity of the energy storage battery is greater than 30%.

[0101] Optionally, the first preset electric quantity threshold of 30% is an example, and in actual application, an arbitrary value can be taken from an electric quantity interval that is centered on the above-mentioned intersection and that is up and down floating by a first preset proportion. Optionally, the first preset proportion is selected from 3% to 8% of the total capacity of the at least one energy storage battery. That is, if the above-mentioned intersection is 30%, the first preset electric quantity threshold can be an arbitrary value in [30% ± the first preset proportion] in addition to the above-mentioned example of 30%. For example, if the first preset proportion is selected from 3% in 3% to 8%, then the first preset electric quantity threshold can be an arbitrary value taken from the interval [27%, 33%] as the first preset electric quantity threshold. If the first preset proportion is selected from 8% in 3% to 8%, then the first preset electric quantity threshold can be an arbitrary value taken from the interval [22%, 38%] as the first preset electric quantity threshold.

[0102] In the above FIG. 6, the remaining capacity of the energy storage battery of the energy storage device is about 30%, which is a turning point, and the remaining capacity is also relatively easy to determine. For a lithium battery, the lithium battery discharge platform mainly represents the time or capacity of the battery under the specified discharge conditions when the battery is discharged to the rated voltage at full charge. The longer the time, the higher the lithium battery discharge platform, and the better the battery performance. When the battery is discharged at a constant current, the change of the battery voltage is a decrease-stable-decrease, and the stable stage is the discharge platform interval segment, and the working performance of the battery in this interval segment is stable; 30% of the remaining capacity corresponds to the turning point of the discharge voltage platform of the battery. When the remaining capacity is greater than 30%, the battery is in the stable stage corresponding to the discharge voltage platform, and the voltage discharge is almost unchanged or changes very little, so the battery can supply power output at a stable voltage, and the working performance is stable. When the remaining capacity is less than 30%, that is, the discharge interval of the battery exceeds the turning point of the discharge voltage platform, the battery voltage rapidly decreases, and the performance is unstable, so the battery cannot supply power output at a stable voltage. Therefore, the first preset capacity threshold is set to 30%.

[0103] Optionally, the above-mentioned first power supply parameter at least includes the state of the electrical energy access and the current remaining capacity of the energy storage battery. In addition to detecting whether the two access ports have electrical energy access, the energy storage device can also detect whether the current remaining capacity of the energy storage device itself exceeds the first preset capacity threshold. According to the arrangement combination of the two detection results, the corresponding power supply mode is set, and the energy storage device is controlled to switch between different power supply modes.

[0104] It should be noted that the order of detecting the plurality of parameters included in the first power supply parameter can be flexibly set. For example, the energy storage device can first detect whether the current remaining capacity of the energy storage device exceeds the first preset capacity threshold, and then detect the electrical energy access state of the energy storage device; or the energy storage device can first detect the electrical energy access state of the energy storage device, and then detect whether the current remaining capacity of the energy storage device exceeds the first preset capacity threshold. Herein, the order is not limited. Moreover, the two detection processes can also be triggered by conditions, for example, only when it is detected that the current remaining capacity of the energy storage device exceeds the first preset capacity threshold, the electrical energy access state of the energy storage device is detected.

[0105] In step 403, when the electrical energy access state indicates that the electrical energy accessed by the energy storage device is the first electrical energy, and the current remaining capacity of the energy storage battery is greater than or equal to the first preset capacity threshold, the power supply mode of the energy storage device for supplying power to the connected external load is the mode of supplying power to the external load by at least one energy storage battery.

[0106] Optionally, corresponding to the detection result of the first power supply parameter, if the power access state indicates that the power accessed by the energy storage device is the first power, and the current residual power of the energy storage battery is greater than or equal to the first preset power threshold, the energy storage device controls the power supply mode of the external load to be supplied by at least one energy storage battery.

[0107] In step 404, in the case that the power access state indicates that the power accessed by the energy storage device is the first power and the second power, and the current residual power of the energy storage battery is greater than or equal to the first preset power threshold, the second power supply channel to the external load is blocked, and the energy storage device controls the power supply mode of the connected external load to be supplied by at least one energy storage battery.

[0108] In the first priority scenario, the energy storage device controls the power supply mode of the external load to be supplied by at least one energy storage battery. In the second priority scenario, the energy storage device controls the power supply mode of the external load to be supplied by the first power supply device. In the third priority scenario, the energy storage device controls the power supply mode of the external load to be supplied by the second power supply device. In the fourth priority scenario, the energy storage device controls the power supply mode of the external load to be supplied by the first power supply device and the second power supply device.

[0109] As can be seen from steps 403 and 404, in the first priority mode, if the current residual power of the energy storage battery is greater than or equal to the first preset power threshold, the energy storage device supplies power to the external load by the energy storage battery inverting discharge, regardless of whether the power access state indicates that the power accessed by the energy storage device is the first power or the second power, or both. In this case, the energy storage device still controls the power supply mode of the connected external load to be supplied by at least one energy storage battery. For example, the first power is green power, and the second power is mains power. In this case, it is equivalent to that when the energy storage device has mains power and green power accessed and the current residual power of the energy storage battery is greater than or equal to the first preset power threshold, the mains power output is blocked in the first priority scenario, and the energy storage device does not supply power to the external load by the mains power, but only supplies power to the external load by discharging the energy storage battery.

[0110] Optionally, the first power supply parameter at least includes the power access state and the current remaining power of the energy storage battery, which are exemplary. In actual applications, other conditions or in combination with other conditions can also be used for judgment. For example, in a possible implementation manner, the first power supply parameter can further include a target discharge power of an external load demand, a rated power of the energy storage device, a first input power of the energy storage device, and a second input power of the energy storage device; the first input power is the input power of the first electric energy, and the second input power is the input power of the second electric energy.

[0111] The energy storage device performs the power supply mode of controlling the energy storage device to supply power to the connected external load according to the power access state and the current remaining power of the energy storage battery, which can be as follows: according to the power access state, the current remaining power, the target discharge power, the rated power, the first input power, and the second input power, the power supply mode of controlling the energy storage device to supply power to the connected external load.

[0112] Optionally, the energy storage device performs the power supply mode of controlling the energy storage device to supply power to the connected external load according to the power access state, the current remaining power, the target discharge power, the rated power, the first input power, and the second input power, which includes: in a case where the power access state indicates that the energy storage device accesses the first electric energy and the second electric energy, and the current remaining power is less than the first preset power threshold, determining a charging compensation power corresponding to the second electric energy according to the rated power and the first input power; determining a standby discharge power according to the second input power and the charging compensation power; and if the standby discharge power is greater than or equal to the target discharge power, controlling the power supply mode of the energy storage device to supply power to the connected external load to be a power supply mode of supplying power only through the second electric energy.

[0113] Optionally, in the result of determining the charging compensation power and the target discharge power, if the standby discharge power is less than the target discharge power, the power supply mode of the energy storage device to supply power to the connected external load is a power supply mode of supplying power to the external load through the second electric energy and the energy storage battery together, and the discharge power of the second electric energy is the standby discharge power.

[0114] For example, the rated power of the energy storage device is 1100W, the power access state of the energy storage device indicates that both the mains and the green electricity are connected, and the power of the green electricity is 400W. If the current remaining power is less than the first preset power threshold, the energy storage device can calculate the charging compensation power corresponding to the second electric energy: (1100-400)=700W, that is, the charging compensation power corresponding to the mains is 700W, and the standby discharge power is determined in combination with the second input power of the mains and the charging compensation power. For example, the second input power of the currently connected mains is 800W, so the standby discharge power is (800-700)=100W. If the target discharge power is less than the standby discharge power, the external load demand can be met only by the mains power supply, and the energy storage device controls the power supply mode to be only the mains power supply.

[0115] In the above example, if the standby discharge power is (800-700)=100W and the target discharge power is 200W, in this case, the standby discharge power is less than the target discharge power, so the energy storage device not only supplies power to the outside through the mains, but also needs to supply power to the outside through the inverter discharge of the energy storage battery, and at this time the discharge power of the mains is 100W, that is, all the excess is used for external discharge.

[0116] Optionally, in the case where the current remaining power of the energy storage battery is less than the first preset power threshold, the charging mode for charging the energy storage battery is determined according to the power access state, and the current remaining power of the energy storage battery is re-detected to determine whether it is greater than or equal to the second preset power threshold; the second preset power threshold is greater than the first preset power threshold; in the case where the current remaining power of the energy storage battery is greater than or equal to the second preset power threshold, the power supply mode of the energy storage device for supplying power to the connected external load is only the power supply mode of supplying power to the external load through at least one energy storage battery.

[0117] Optionally, if the power access state is a state of connecting the first electric energy through only the DC power inlet, the above-determined charging mode is a charging mode through the first electric energy; if the power access state is a state of connecting the second electric energy through only the AC power inlet, the above-determined charging mode is a charging mode through the second electric energy. Of course, if the power access state is a state of connecting the first electric energy through the DC power inlet and connecting the second electric energy through the AC power inlet, the battery can be charged through both electric energies at the same time. Alternatively, the charging mode through the first electric energy can be preferentially selected. During the charging process of the energy storage battery, the remaining power of the energy storage battery will increase, and during the continuous monitoring process, if it is found that the remaining power of the battery changes to be greater than or equal to the second preset power threshold, the power supply mode of the energy storage device for supplying power to the connected external load is only the power supply mode of supplying power to the external load through at least one energy storage battery.

[0118] Optionally, the second preset power threshold is selected from a power interval corresponding to a battery state of charge of the overcharge prevention safety voltage on the battery charging curve of the energy storage battery and a second preset proportion downward floating. The second preset proportion is selected from 3-8% of the total capacity of the at least one energy storage battery.

[0119] In the above FIG. 6, the charging platform curve 601 is the battery charging curve of the energy storage battery, and the overcharge prevention safety voltage point 601b is further included on the charging platform curve 601 of the energy storage battery of the energy storage device. The state of charge corresponding to the overcharge prevention safety voltage point 601b is SOC=95%. Moreover, the second preset power threshold can be any value in [95%, 95%-the second preset proportion], such as the second preset proportion selected from 3% in 3-8%. Then, the second preset power threshold can be any value in the [92%, 95%] interval as the second preset power threshold. If the second preset proportion is selected from 8% in 3-8%, then the second preset power threshold can be any value in the [87%, 95%] interval as the second preset power threshold.

[0120] Optionally, since the use of the overall device of the energy storage device is continuous, the continuous charging and discharging working process is provided. The device is charged to the full state and then released. The full charging of the battery to 100% has a negative impact on the life of the battery. Under the premise of ensuring the service life of the energy storage device, the scheme can select 95% as the charging cycle end threshold (i.e. the second preset power threshold). Moreover, there is an error in the calculation of the battery SOC. If the calculated SOC is 100% now, there may be no full charging or overcharging under the premise of error. If the overcharging is caused by the error, it will accelerate the pressure of the internal chemical reaction of the battery, resulting in negative impact on the performance and service life of the battery. Therefore, the charging cycle end SOC threshold is adjusted to 95% to ensure the stability of the battery performance and improve the service life of the battery. In addition, under the condition of full charging of the battery, the internal chemical reaction of the battery will be intensified, resulting in accelerated battery aging, and there is a risk of battery swelling. Long-term use will cause the performance of the battery to decline or be damaged. Generally, the BMS (Battery Management System) system is used for SOC detection in the portable energy storage device. However, under the actual working condition of the portable energy storage device, there is a risk of BMS detection out of control due to sensor wear and tear failure and the diversity of the use environment. By setting the charging cycle cutoff SOC at 95%, the internal pressure and temperature of the battery can be reduced, the risk of overcharging caused by the out-of-control BMS system can be prevented, the risk of battery fire can be reduced, and the safety of the battery can be improved.

[0121] Optionally, after the power supply mode of the energy storage device supplying power to the connected external load is the mode of supplying power to the external load only through the at least one energy storage battery, the energy storage device can also continuously monitor the remaining power of the energy storage battery, and when it is determined that the current remaining power is greater than the first preset power threshold and less than the second preset power threshold, the power supply mode of supplying power to the external load through the at least one energy storage battery is maintained. That is, the power supply mode is executed when the current remaining power is greater than the first preset power threshold and less than the second preset power threshold, avoiding the occurrence of over-discharge when the current remaining power is less than the first preset power threshold.

[0122] Similarly, when the second power supply parameter includes multiple parameters, the detection order is not limited to a fixed sequence, and the developer can flexibly design and adjust.

[0123] Step 405: The power supply detection scenario of the energy storage device is the second priority scenario, and the second power supply parameter corresponding to the second priority scenario is detected.

[0124] Optionally, if it is detected through step 401 that the current power supply detection scenario is the second priority scenario, step 404 is executed, and the second power supply parameter corresponding to the second priority scenario is detected, and the power supply mode of the energy storage device is controlled based on the detection result.

[0125] Optionally, taking the second priority scenario as an example, the energy storage device needs to detect the second power supply parameter corresponding to the second priority scenario. The second power supply parameter at least includes an energy access state; the energy access state is used to indicate that the energy accessed by the energy storage device is the first energy accessed through the direct-current electrical access port and / or the second energy accessed through the alternating-current electrical access port. That is, in the second priority scenario, the second power supply parameter is detected, and the power supply mode is selected based on the detection result.

[0126] Step 406: The power supply mode of the energy storage device supplying power to the connected external load is controlled according to the energy access state.

[0127] In one possible implementation, step 406 is as follows: when the energy access state indicates that the energy accessed by the energy storage device is the second energy, the power supply mode of the energy storage device supplying power to the connected external load is the mode of supplying power to the external load through the second energy.

[0128] That is, in the second priority scenario, after the energy access state of the energy storage device is detected, if it is found that the second energy is accessed, the power supply mode of the energy storage device supplying power to the connected external load is the mode of supplying power to the external load through the second energy.

[0129] Optionally, the second power supply parameter at least includes the power access state, which is also exemplary, and other conditions or in combination with other conditions can also be used in actual application. For example, the second power supply parameter further includes: target discharge power of external load demand, rated power of energy storage device, first input power of energy storage device and second input power of energy storage device; the first input power is the input power of the first electric energy, and the second input power is the input power of the second electric energy; the step 406 can be executed in the following manner: in the case that the power access state indicates that the energy storage device accesses the first electric energy and the second electric energy, the rated power and the first input power are used to determine the charging compensation power corresponding to the second electric energy; the second input power and the charging compensation power are used to determine the standby discharge power; if the standby discharge power is greater than or equal to the target discharge power, the power supply mode of the energy storage device for supplying power to the connected external load is the power supply mode through the second electric energy; if the standby discharge power is less than the target discharge power, the power supply mode of the energy storage device for supplying power to the connected external load is the power supply mode through the second electric energy and the energy storage battery jointly supplying power to the external load, and the discharge power of the second electric energy is the standby discharge power. The manner in which the energy storage device calculates the charging compensation power and the standby discharge power can refer to the related examples in the step 404, which will not be described here.

[0130] Optionally, the energy storage device controls the power supply mode according to the detection result of the first power supply parameter. In this embodiment, the energy storage device includes green power supply mode, mains power supply mode and inverter power supply mode. Please refer to FIG. 7, which shows a connection structure diagram of an energy storage device according to an example embodiment of the present application. As shown in FIG. 7, it includes an energy storage device 701, an external device 702, a mains bypass 703, an inverter path 704, a mains plug-in port 705 and a green plug-in port 706. The energy storage device can access the mains through the mains plug-in port 705 or access the green power through the green plug-in port 706. After the above detection, if the detection result indicates that the energy storage device is in the first priority scenario, the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, and the energy access state indicates that the energy storage device accesses the first energy, the inverter path 704 outputs the energy of the energy storage battery to supply power to the external device. If the energy access state indicates that the energy storage device accesses the first energy and the second energy, and the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, the second energy supply channel to the external load is blocked, that is, the mains power supply to the external load is prohibited. In this process, the charging mode of the energy storage battery can be controlled to be charged to the energy storage battery by the first energy. Optionally, if the power supply detection scenario is the second priority scenario, the second power supply parameter corresponding to the second priority scenario is detected, and the energy access state indicates that the energy storage device accesses the second energy, the power supply mode of the energy storage device to the connected external load is controlled to be the mains bypass 703 to supply power to the external load.

[0131] In actual control, the mains bypass can be connected by controlling the relay or output switch to realize mains discharge. When the energy storage device does not meet the mains power supply condition, the inverter can be controlled to obtain the stored energy from the energy storage device and output through the inverter path.

[0132] Optionally, the energy storage device of the present application further includes a display screen, and the energy storage device can display the power supply detection scenario and the determined power supply mode through the display screen. For example, please refer to FIG. 8, which shows a display interface diagram of a display screen according to an example embodiment of the present application. As shown in FIG. 8, it includes a displayed power supply detection scenario 801 and a power supply mode 802. The energy storage device displays different icons or information based on different power supply detection scenarios and different power supply modes, thereby prompting the user of the current working state of the energy storage device.

[0133] In summary, the energy storage device detects a first power supply parameter corresponding to the first priority scenario, and the first power supply parameter at least includes an energy access state and a current remaining capacity of the energy storage battery; the energy access state is used to indicate that the energy accessed by the energy storage device is first energy accessed through a direct current access port and / or second energy accessed through an alternating current access port; and the energy storage device controls a power supply mode of supplying power to the connected external load according to the energy access state and the current remaining capacity of the energy storage battery. In this solution, by setting a corresponding first power supply parameter for the first priority scenario, the first power supply parameter at least includes the energy access state and the current remaining capacity of the energy storage battery, and the power supply mode of the energy storage device for supplying power to the connected external load is controlled in combination with the result of detecting the first power supply parameter, which can meet the detection requirement in a specific scenario, flexibly detect according to different scenarios and corresponding first power supply parameters, control the power supply mode, and improve the efficiency and adaptability of controlling the power supply mode of the energy storage device.

[0134] Optionally, in actual application, the energy storage device usually has the following power supply modes: inverter discharging, mains discharging, and inverter discharging and mains discharging at the same time. In this solution, the power supply mode for supplying power to the external load connected to the energy storage device is determined in combination with the detection result of the power supply parameter in the above different priority scenarios.

[0135] Next, taking the first priority scenario as the green electricity priority scenario, the second priority scenario as the mains priority scenario, and the current power supply detection scenario of the energy storage device as the green electricity priority scenario as an example, the content included in the first power supply parameter is detected to obtain the charging and discharging state required by the energy storage device at present. Different detection results of the power supply parameter detection in the energy storage device require different charging and discharging states of the energy storage device at present.

[0136] Just for the determination of the charging mode, the energy storage device can have the following various cases:

[0137] For example, in the green electricity priority scenario of the energy storage device, the energy storage device detects the first power supply parameter corresponding to the green electricity priority scenario. In the first case, the energy access state included in the first power supply parameter indicates that only green electricity is accessed, and the energy storage battery is charged using the green electricity in the case that the energy storage battery is not full. That is, if the energy storage device is accessed only by green electricity (such as green electricity generated by photovoltaic), the energy storage battery is charged only by green electricity.

[0138] Optionally, in the second case, the energy access state included in the first power supply parameter indicates that only mains is accessed, and the energy storage battery of the energy storage device is charged using the mains in the case that the energy storage battery is not full. That is, if the energy storage device is accessed only by mains, the energy storage battery is charged only by mains.

[0139] Optionally, in the third case: the power access state included in the first power supply parameter indicates that both the mains and the green power are accessed, and the energy storage battery is not full, the mains and / or the green power can be used to charge the energy storage battery, that is, if the energy storage device has access to the mains and the green power, if the current energy storage battery is not full, any one or both of the two power can be used to charge the energy storage battery at the same time.

[0140] For another example, in the non-green power priority scenario of the energy storage device, if the power access state indicates that only the green power is accessed, the green power is used to charge the energy storage battery; if the power access state indicates that only the mains is accessed, the mains is used to charge the energy storage battery; if the power access state indicates that both the green power and the mains are accessed, the energy storage device uses both the two power to charge the energy storage battery at the same time, and the mains access is in the compensation mode, that is, the green power provides all the charging power, and the mains compensates for the remaining power of the green power.

[0141] That is, the above several cases can be regarded as the energy storage device not yet connected to an external load, and the energy storage device determines how to charge based on the power access state in the first power supply parameter or the second power supply parameter.

[0142] Next, in combination with the energy storage device connected to an external load, the energy storage device needs to supply power to the external device, therefore, in addition to determining the charging mode, the corresponding power supply mode also needs to be determined, and the energy storage device can appear in various cases as follows:

[0143] For example, in the green power priority scenario of the energy storage device, the energy storage device detects the first power supply parameter corresponding to the green power priority scenario, and in the same first case as described above: the power access state included in the first power supply parameter indicates that only the green power is accessed, and in the case that the energy storage battery is not full, the green power is used to charge the energy storage battery of the energy storage device. In this case, if the current remaining power contained in the first power supply parameter is also greater than the first preset power threshold, the energy storage battery can be used for inverter discharge power supply. That is, if the SOC calculated based on the current remaining power is greater than 30%, the external load is supplied with power in the form of inverter discharge. For example, assuming that the energy storage device is connected to an external load, the target discharge power required by the external load (the power required by the energy storage device) is 500W, and the input power of the photovoltaic is 400W at this time, then in the case that the green power mode is started, the external load is supplied with power in the form of the energy storage battery inverter regardless of the size of the mains power.

[0144] In the second case, the power access state in the first power supply parameter indicates that the single-phase power is connected, and the energy storage battery is not full. In this case, the single-phase power is used to charge the energy storage battery of the energy storage device. If the current remaining power in the first power supply parameter is greater than the first preset power threshold, the energy storage battery is used for inverter discharge to supply power to the external load.

[0145] In the third case, the power access state in the first power supply parameter indicates that the single-phase power and the green power are connected, and the energy storage battery is not full. In this case, the single-phase power and / or the green power are used to charge the energy storage battery. If the current remaining power in the first power supply parameter is greater than the first preset power threshold, the energy storage battery is used for inverter discharge to supply power to the external load. If there is excess single-phase power or the single-phase power needs to be supplemented for discharge (the single-phase power is connected in compensation mode), the energy storage device can also open the single-phase discharge channel to the external load to discharge the single-phase power. That is, although the energy storage device can flexibly select which power supply mode to use, in the green power priority scenario, the energy storage device preferentially uses the inverter discharge power supply mode to supply power to the external load. Optionally, in this scheme, the energy storage device is provided with a display screen, and the display screen can display a corresponding display interface corresponding to the current charging and discharging state of the energy storage device (i.e., the charging mode and the power supply mode).

[0146] Please refer to FIG. 9, which shows a display interface according to an example embodiment of the present application. As shown in FIG. 9, the display interface 900 includes display unit one 901, display unit two 902, and display unit three 903. In FIG. 9, different display styles are displayed by displaying different display units. For example, the longer the display unit one, the greater the output power parameter value. For example, the length of the display unit one corresponding to the output power parameter value A is different from the length of the display unit one corresponding to the output power parameter value B, so the display interface 900 displays different display units, thereby distinguishing the output power parameter value from the user.

[0147] For example, the display unit 901 in FIG. 9 is the display content corresponding to the power supply mode. The length of the display unit one 901 can be determined by the output power, thereby displaying different styles.

[0148] Optionally, in addition to displaying the power supply mode, the display screen can also be used to display the conduction state of the access path and the output path. The access path is the path when the external power source charges the energy storage device. The output path is the path when the energy storage device supplies power to the external load. The energy storage device can further perform the following steps: determining the conduction state of the access path, and determining the conduction state of the output path; and displaying the conduction state of the access path and the output path in the display screen. The conduction state includes conduction or non-conduction.

[0149] Please refer to FIG. 10, which shows the interface diagram of another display interface related to an example embodiment of the present application. As shown in FIG. 10, the display screen 1000 contains an access path icon 1001 and an output path icon 1002. The energy storage device displays the access path icon 1001 in the display screen when it is determined that the conduction state of the access path is conduction. If the conduction state of the access path is non-conduction, the access path icon 1001 will not be displayed in the display screen. The energy storage device displays the output path icon 1002 in the same way as it determines whether to display the access path icon 1001, which will not be described here.

[0150] In a possible implementation, the access path is also divided into green power access path and mains access path corresponding to the two insertion ports in FIG. 7. If the energy storage device is charging, it determines which access path is conduction and displays the corresponding path icon in the display screen. The output path icon is the same. If the battery is directly inverter discharged, the inverter output path icon needs to be displayed. If the mains is directly output, the mains path icon can be directly displayed.

[0151] Please refer to FIG. 11, which shows the interface diagram of another display interface related to an example embodiment of the present application. As shown in FIG. 11, the display screen 1100 contains a green power access path icon 1101, a mains access path icon 1102, an inverter output path icon 1103, and a mains output path icon 1104. The green power access path icon 1101 is displayed when the external power source is green power and the energy storage device is charged through the green power insertion port. That is, when determining the conduction state of the access path, if the conduction state of the green power access path is conduction, the green power access path icon 1101 can be displayed in the display screen, indicating that the conduction state of the green power access path is conduction. If the conduction state of the green power access path is non-conduction, the green power access path icon 1101 will not be displayed in the display screen, indicating that the conduction state of the green power access path is non-conduction. The display of the mains access path icon 1102 and the output path icon is the same, which will not be described here.

[0152] It should be noted that, for the detection of the on state of the above various paths, it can also be determined by detecting the state of the corresponding on switch, so as to obtain the on state of the various paths. For example, for the output path, the energy storage device is provided with a load switch, if the load switch is in the off state, it indicates that the on state of the output path is not on, if the load switch is in the closed state, it indicates that the on state of the output path is on. The access path can also be indicated by the state of the corresponding path switch, which will not be described here.

[0153] In one possible implementation, the display screen of the energy storage device is a touch screen, and the user can interact with the energy storage device by touching the display screen. For example, please refer to FIG. 12, which shows an interface diagram of a setting interface according to an example embodiment of the present application. As shown in FIG. 12, the setting interface 1200 includes a first selection control 1201, a second selection control 1202, a determination control 1203, a cancellation control 1204, and an addition control 1205. The first selection control is used to select various power supply detection scenarios provided by the energy storage device, and the second selection control is used to select corresponding power supply parameters. The user can autonomously select any one power supply detection scenario by triggering the first selection control 1201, and can autonomously select any one or more power supply parameters by triggering the second selection control 1202. After triggering the determination control 1203, the energy storage device can establish a corresponding relationship between the power supply detection scenario and the power supply parameter selected by the user. Through the corresponding relationship, the energy storage device can know which power supply parameters to detect in which power supply detection scenario. The user can also add a new power supply detection scenario and corresponding power supply parameters by triggering the addition control 1205.

[0154] Optionally, the display screen also displays icons of different power supply detection scenarios, and the user can also control the energy storage device to switch between different power supply detection scenarios by triggering the first display icon displayed on the display screen. For example, please refer to FIG. 13, which shows an interface diagram of a display interface according to an example embodiment of the present application. As shown in FIG. 13, the display interface 1300 includes a first display icon 1301, a first selection box 1302, a green electricity priority scenario control 1303, and a city electricity priority scenario control 1304. The user can trigger the first display icon 1301 on the display screen, such as long press, single click, double click, etc. The energy storage device can display the first selection box 1302, and the user can select the green electricity priority scenario control 1303 or the city electricity priority scenario control 1304 to switch the current power supply detection scenario of the energy storage device to the scenario selected by the user.

[0155] In the power supply detection scenario is the city power priority scenario, and the power supply mode is the city power discharge mode, please refer to FIG. 14, which shows another display interface interface schematic diagram of FIG. 13 involved in an example embodiment of the present application.

[0156] In the power supply detection scenario is the city power priority scenario, and the power supply mode is the city power discharge mode, please refer to FIG. 14, which shows another display interface interface schematic diagram of FIG. 13 involved in an example embodiment of the present application.

[0157] In the power supply detection scenario is the city power priority scenario, and the power supply mode is the city power discharge mode, please refer to FIG. 14, which shows another display interface interface schematic diagram of FIG. 13 involved in an example embodiment of the present application.

[0158] In the power supply detection scenario is the city power priority scenario, and the power supply mode is the city power discharge mode, please refer to FIG. 14, which shows another display interface interface schematic diagram of FIG. 13 involved in an example embodiment of the present application.

[0159] In the power supply detection scenario is the city power priority scenario, and the power supply mode is the city power discharge mode, please refer to FIG. 14, which shows another display interface interface schematic diagram of FIG. 13 involved in an example embodiment of the present application.

[0160] The above FIG. 13 to FIG. 18 are exemplary, and there are other situations in actual application, and the specific judgment logic and determined display parameters can refer to the description in the above embodiments, which will not be enumerated and described here.

[0161] Optionally, in the above examples of each figure, some figures also contain the display of the charging time or discharging time. For example, the photovoltaic and city power of the energy storage device are connected, the photovoltaic is charged, the city power is charged, and the city power supplies the load at the same time. The photovoltaic charging battery (when the city power compensation power is greater than the load power). Assuming that the energy storage device is connected with an external load, the target discharging power required by the external load is 200W, the input power of the photovoltaic is 400W, and the compensation power of the city power is 700W (1100-400) first. If the input power of the city power is 1000W, the standby discharging power 300W is greater than the load power 200W, and only the city power supply can provide the demand of the external load, and only the charging time can be displayed in the double charging and single discharging state. (First judge the power, then calculate the time). Of course, if there is no external load, the energy storage device only charges the energy storage battery, and only the charging time can be displayed.

[0162] Alternatively, the photovoltaic and the commercial power of the energy storage device are connected together, the photovoltaic charges, and the commercial power does not charge; the photovoltaic charges the battery, and the battery supplies power to the load. Assuming that the energy storage device is connected with an external load, the target discharge power required by the external load is 500W, and the input power of the photovoltaic is 400W at this time, then in the green power priority scenario, no matter the size of the commercial power, the state is that the photovoltaic charges the battery, and the battery supplies power to the load at this moment. If the output power of the inverter discharge is 300W, which is less than the output power 500W, only the discharge time is displayed on the display screen. (It is also to judge the power first, and then calculate the time)

[0163] Alternatively, in a possible implementation manner, after determining the power supply mode of the current energy storage device, the energy storage device can acquire the display time parameter of the time display icon based on the determined power supply mode.

[0164] Optionally, in the various power supply modes described above, if the power supply mode is the inverter discharge mode, the display time parameter corresponding to the inverter discharge mode set in the energy storage device can include an output power parameter of the energy storage device and a first time parameter, wherein the first time parameter is used to indicate the remaining time of the remaining power of the energy storage device.

[0165] Optionally, in the case where the power supply mode is the inverter discharge mode, the energy storage device can acquire the display time parameter of the time display icon in the following manner according to the power supply mode: according to the inverter discharge mode, the output voltage, the output current and the remaining power of the energy storage device are acquired; according to the output voltage and the output current, the output power parameter is calculated; and according to the remaining power and the output power parameter, the first time parameter is calculated. That is, when the power supply mode is the inverter discharge mode, the display time parameter to be displayed needs to be calculated by the output voltage, the output current and the remaining power of the energy storage device. For example, P 输出 represents the output power parameter, V 输出 represents the output voltage, I 输出 represents the output current, and the energy storage device can calculate the output power parameter according to the following formula: P 输出 = V 输出 *I 输出 . T 剩余 represents the first time parameter, and SOC represents the remaining power, and the energy storage device can calculate the first time parameter according to the following formula: T1 = SOC / P 输出 .

[0166] In a possible implementation manner, the power supply mode includes a charge-discharge power supply mode, and the display duration parameter corresponding to the charge-discharge power supply mode includes a charging power parameter of the energy storage device, an output power parameter, and a second time parameter used for indicating a release time of a remaining power of the energy storage device or a full charging time of the energy storage device. The charge-discharge power supply mode can be regarded as a general term of the mains power supply mode and the photovoltaic power supply mode. In the charge-discharge power supply mode, the energy storage device charges itself and discharges to the outside.

[0167] In a case where the power supply mode is the charge-discharge power supply mode, the energy storage device acquires the display duration parameter of the time display icon according to the power supply mode, including: acquiring, according to the charge-discharge power supply mode, a charging voltage, a charging current, an output voltage, an output current, and a remaining power of the energy storage device; calculating the charging power parameter according to the charging voltage and the charging current; calculating the output power parameter according to the output voltage and the output current; and calculating the second time parameter according to the remaining power, the charging power parameter, and the output power parameter. That is, in the charge-discharge power supply mode, the display duration parameter includes the input power parameter and the second time parameter in addition to the output power parameter. For example, P 输入 represents the input power parameter, V 输入 represents the input voltage, and I 输入 represents the input current. The energy storage device can calculate the input power parameter according to the following formula: P 输 入 =V 输入 *I 输入 . The calculation of the output power parameter is the same as described above, and will not be repeated here. Since the energy storage device is both charging and discharging, the second time parameter is calculated in the following manner: the energy storage device can detect the calculated input power parameter and the output power parameter, and if P 输出 >P 输入 , the energy storage device can calculate the second time parameter according to the following formula: T2=SOC / (P 输出 -P 输入 ); if P 输出 <P 输入 , the energy storage device can calculate the second time parameter according to the following formula: T2=(C 总 -SOC) / (P 输入 -P 输出 ); where C 总 represents the total capacity of the energy storage device.

[0168] Optionally, in the above power grid priority scenario, the power supply mode can also include a power grid power supply mode, which does not belong to the above charge-discharge power supply mode. In the present scheme, the display duration parameter corresponding to the power grid power supply mode can include not only the output power parameter of the energy storage device, but also the input power parameter of the power grid input. That is, in this power supply mode, the battery of the energy storage device is not used, and power is supplied directly through the power grid. For example, a power grid bypass can be designed separately in the energy storage device. When the power grid power supply mode is used, the input power grid is directly exported through the power grid bypass, thereby supplying power to the external load.

[0169] Optionally, in the above FIG. 9, the display unit three 903 represents the second time parameter. The display mode of the display unit three can be directly displaying the parameter value of the time parameter. For example, if the current energy storage device works according to the current output power parameter and the charge power parameter, the battery of the energy storage device can be fully charged after 30 minutes, then the display unit three 903 can directly display “30min”, thereby prompting the second time parameter of the user. Of course, as time goes on, the length or the number of the display unit three can also be displayed longer or more, as described above in the display mode of the display unit two or the display unit three. Here, only the direct display of time is exemplified, and various display modes can be flexibly changed.

[0170] After determining the target display mode of the display unit corresponding to the display duration parameter in the time display icon, the target display mode is used to display each display duration parameter, thereby forming a time display icon, and prompting the current working condition of the energy storage device through the time display icon. Specifically, which power supply mode is used for power supply, and reflecting the parameter value of each display duration parameter used by the power supply mode.

[0171] Optionally, the energy storage device can also obtain a target output power. In the case that the target output power is greater than a maximum power threshold, an overload prompt information is displayed on the display screen. The target output power is the total power output by the energy storage device to the external device. The maximum power threshold is the maximum power that the energy storage device can provide. The current temperature of the energy storage device is obtained. In the case that the current temperature of the energy storage device is greater than a preset temperature threshold, a temperature warning information is displayed on the display screen. In the case that the energy storage device works abnormally, an abnormal working information is displayed on the display screen. For example, the icon 1801 in the above FIG. 18 represents the overload prompt information, the icon 1802 represents the temperature warning information, and the icon 1803 represents the abnormal working information.

[0172] In summary, the energy storage device detects a first power supply parameter corresponding to a first priority scenario, the first power supply parameter at least including an energy access state and a current remaining capacity of the energy storage battery; the energy access state is used to indicate that the energy accessed by the energy storage device is first energy accessed through a direct current access port and / or second energy accessed through an alternating current access port; and the energy storage device controls a power supply mode of supplying power to the connected external load according to the energy access state and the current remaining capacity of the energy storage battery. In this solution, by setting the corresponding first power supply parameter for the first priority scenario, the first power supply parameter at least including the energy access state and the current remaining capacity of the energy storage battery, and combining the result obtained by detecting the first power supply parameter, the energy storage device controls the power supply mode of supplying power to the connected external load, which can meet the detection requirement in a specific scenario, flexibly detect according to different scenarios and the corresponding first power supply parameter, control the power supply mode, and improve the efficiency and adaptability of controlling the power supply mode of the energy storage device.

[0173] Optionally, through various functions of the display interface, the user can real-time understand the working condition of the energy storage device, so that the comprehensiveness and diversity of the display information of the energy storage device are improved, the user can more conveniently understand the energy storage device, and the safety of use is improved.

[0174] The following is an apparatus embodiment of the present application, which can be used to execute the method embodiments of the present application. For details not disclosed in the apparatus embodiments of the present application, refer to the method embodiments of the present application.

[0175] Please refer to FIG. 19, which shows a structural block diagram of a power supply control device provided by an example embodiment of the present application. The power supply control device 1900 can be used in an energy storage device, which includes at least one energy storage battery. The energy storage device can execute all or part of the steps executed by the energy storage device in the methods provided by various method embodiments. The power supply control device 1900 includes:

[0176] A first detection module 1901 is configured to detect a first power supply parameter corresponding to a first priority scenario, the first power supply parameter at least including an energy access state and a current remaining capacity of the energy storage battery; the energy access state is used to indicate that the energy accessed by the energy storage device is first energy accessed through a direct current access port and / or second energy accessed through an alternating current access port;

[0177] A first control module 1902 is configured to control a power supply mode of supplying power to a connected external load by the energy storage device according to the energy access state and the current remaining capacity of the energy storage battery.

[0178] In summary, the energy storage device detects a first power supply parameter corresponding to the first priority scenario, and the first power supply parameter at least includes an energy access state and a current remaining capacity of the energy storage battery; the energy access state is used to indicate that the energy accessed by the energy storage device is the first energy accessed through the direct current access port and / or the second energy accessed through the alternating current access port; and the energy storage device controls a power supply mode of supplying power to the connected external load according to the energy access state and the current remaining capacity of the energy storage battery. In this solution, by setting the corresponding first power supply parameter for the first priority scenario, the first power supply parameter at least includes the energy access state and the current remaining capacity of the energy storage battery, and the power supply mode of the energy storage device for supplying power to the connected external load is controlled in combination with the result obtained by detecting the first power supply parameter, the detection requirement in a specific scenario can be met, the detection is flexibly performed according to different scenarios and the corresponding first power supply parameter, the power supply mode is controlled, and the efficiency and adaptability of controlling the power supply mode of the energy storage device are improved.

[0179] Optionally, the first control module 1902 is further used for:

[0180] In a case where the energy access state indicates that the energy accessed by the energy storage device is the first energy, and the current remaining capacity of the energy storage battery is greater than or equal to a first preset capacity threshold, the power supply mode of the energy storage device for supplying power to the connected external load is a mode of supplying power to the external load by the at least one energy storage battery.

[0181] Optionally, the first control module 1902 is further used for:

[0182] In a case where the energy access state indicates that the energy accessed by the energy storage device is the first energy and the second energy, and the current remaining capacity of the energy storage battery is greater than or equal to the first preset capacity threshold, the second energy supply channel to the external load is blocked, and the power supply mode of the energy storage device for supplying power to the connected external load is a mode of supplying power to the external load by the at least one energy storage battery.

[0183] Optionally, the apparatus further includes:

[0184] The first blocking module is used for, in a case where the energy access state indicates that the energy accessed by the energy storage device is the first energy and the second energy, and the current remaining capacity of the energy storage battery is greater than or equal to the first preset capacity threshold, controlling a charging mode of the energy storage battery to be a mode of charging the energy storage battery by the first energy, and blocking a charging channel of the second energy to the energy storage battery.

[0185] Optionally, the first preset proportion is selected from 3% to 8% of the total capacity of the at least one energy storage battery.

[0186] Optionally, the first preset proportion is selected from 3% to 8% of the total capacity of the at least one energy storage battery.

[0187] Optionally, the first power supply parameter further comprises: a target discharge power of the external load demand, a rated power of the energy storage device, a first input power and a second input power of the energy storage device; the first input power is an input power of the first electric energy, and the second input power is an input power of the second electric energy.

[0188] The first control module 1902 is further configured to:

[0189] According to the electric energy access state, the current residual electric quantity, the target discharge power, the rated power, the first input power and the second input power, control the power supply mode of the energy storage device for supplying power to the connected external load.

[0190] Optionally, according to the electric energy access state, the current residual electric quantity, the target discharge power, the rated power, the first input power and the second input power, controlling the power supply mode of the energy storage device for supplying power to the connected external load comprises:

[0191] In a case where the electric energy access state indicates that the electric energy accessed by the energy storage device is the first electric energy and the second electric energy, and the current residual electric quantity is less than a first preset electric quantity threshold, determining a charging compensation power corresponding to the second electric energy according to the rated power and the first input power;

[0192] According to the second input power and the charging compensation power, determining a standby discharge power;

[0193] If the standby discharge power is greater than or equal to the target discharge power, the power supply mode of the energy storage device for supplying power to the connected external load is a mode of supplying power only through the second electric energy.

[0194] Optionally, the apparatus further comprises:

[0195] The second control module is configured to, if the standby discharge power is less than the target discharge power, control the power supply mode of the energy storage device for supplying power to the connected external load to be a mode of supplying power to the external load jointly by the second electric energy and the energy storage battery, and the discharge power of the second electric energy is the standby discharge power.

[0196] Optionally, the device further comprises:

[0197] The re-detecting module is configured to, in a case where the current residual capacity of the energy storage battery is less than the first preset capacity threshold, determine a charging mode for charging the energy storage battery according to the power access state, and re-detect whether the current residual capacity of the energy storage battery is greater than or equal to a second preset capacity threshold; the second preset capacity threshold is greater than the first preset capacity threshold.

[0198] The third control module is configured to, in a case where the current residual capacity of the energy storage battery is greater than or equal to the second preset capacity threshold, control the power supply mode of the energy storage device for supplying power to the connected external load to be a mode of supplying power to the external load only through the at least one energy storage battery.

[0199] Optionally, the second preset capacity threshold is selected from a capacity interval corresponding to a battery state of charge of a battery overcharge prevention safety voltage in a battery charging curve of the energy storage battery and a second preset proportion of downward floating.

[0200] Optionally, the second preset proportion is selected from 3%-8% of the total capacity of the at least one energy storage battery.

[0201] Optionally, the device further comprises:

[0202] The first maintaining module is configured to, after the power supply mode of the energy storage device for supplying power to the connected external load is controlled to be a mode of supplying power to the external load only through the at least one energy storage battery, maintain supplying power to the external load through the at least one energy storage battery in a case where the current residual capacity is greater than the first preset capacity threshold and less than the second preset capacity threshold.

[0203] Optionally, the device further comprises:

[0204] The second detecting module is configured to detect a second power supply parameter corresponding to a second priority scenario, the second power supply parameter at least including a power access state; the power access state is used to indicate that the power accessed by the energy storage device is first power and / or second power.

[0205] The fourth control module is configured to control the power supply mode of the energy storage device for supplying power to the connected external load according to the power access state.

[0206] Optionally, the fourth control module is further configured to, in a case where the power access state indicates that the power accessed by the energy storage device is second power, control the power supply mode of the energy storage device for supplying power to the connected external load to be a mode of supplying power to the external load through the second power.

[0207] Optionally, the second power supply parameter further comprises: a target discharge power of the external load demand, a rated power of the energy storage device, a first input power and a second input power of the energy storage device, wherein the first input power is an input power of the first electric energy, and the second input power is an input power of the second electric energy.

[0208] The fourth control module is further configured to:

[0209] In a case where the electric energy access state indicates that the electric energy accessed by the energy storage device is the first electric energy and the second electric energy, determining, according to the rated power and the first input power, a charging compensation power corresponding to the second electric energy;

[0210] determining, according to the second input power and the charging compensation power, a standby discharge power;

[0211] If the standby discharge power is greater than or equal to the target discharge power, the power supply mode of the energy storage device for supplying power to the connected external load is a power supply mode through the second electric energy;

[0212] If the standby discharge power is less than the target discharge power, the power supply mode of the energy storage device for supplying power to the connected external load is a power supply mode through the second electric energy and the energy storage battery jointly supplying power to the external load, and a discharge power of the second electric energy is the standby discharge power.

[0213] Optionally, the energy storage device comprises a direct-current electric energy access port and an alternating-current electric energy access port.

[0214] When the direct-current electric energy access port is used to access the first electric energy generated by the renewable energy source, the electric energy access state is the first electric energy access.

[0215] When the alternating-current electric energy access port is used to access the second electric energy provided by the commercial power, the electric energy access state is the second electric energy access.

[0216] Optionally, the apparatus further comprises:

[0217] The second detection module is configured to, before detecting the first power supply parameter corresponding to the first priority scenario, detect a power supply detection scenario of the energy storage device, wherein the power supply detection scenario comprises the first priority scenario and a second priority scenario.

[0218] Please refer to FIG. 20, which is a structural schematic diagram of another example of the power supply control apparatus provided in the embodiments of the present application. The power supply control apparatus 2000 can be an energy storage device, and the energy storage device includes a satellite communication module, and can realize the functions in the method provided in the embodiments of the present application. The power supply control apparatus 2000 can be a chip system. In the embodiments of the present application, the chip system can be composed of a chip, or can include a chip and other discrete devices.

[0219] In the hardware implementation, the communication module can be a transceiver, and the transceiver is integrated in the power supply control apparatus 2000 to form a communication interface 2003.

[0220] The power supply control apparatus 2000 includes at least one processor 2001, which is used to realize or support the power supply control apparatus 2000 to realize the functions of the energy storage device in the method provided in the embodiments of the present application. For example, the processor 2001 can perform the steps of detecting a first power supply parameter corresponding to a first priority scenario, the first power supply parameter at least including an energy access state and a current remaining capacity of an energy storage battery, the energy access state being used to indicate that the energy accessed by the energy storage device is first energy accessed through a direct current access port and / or second energy accessed through an alternating current access port, and controlling a power supply mode of the energy storage device for supplying power to a connected external load according to the energy access state and the current remaining capacity of the energy storage battery. For details, refer to the detailed description in the method example, which will not be repeated here.

[0221] The power supply control apparatus 2000 can further include at least one memory 2002, which is used to store program instructions and / or data. The memory 2002 is coupled with the processor 2001. The coupling in the embodiments of the present application is indirect coupling or communication connection between devices, units or modules, which can be electrical, mechanical or other forms, and is used for information interaction between devices, units or modules. The processor 2001 can operate cooperatively with the memory 2002. The processor 2001 can execute the program instructions stored in the memory 2002. At least one of the at least one memory can be included in the processor.

[0222] The power supply control apparatus 2000 can further include a communication interface 2003, which is used to communicate with other devices through a transmission medium, so that the devices in the power supply control apparatus 2000 can communicate with other devices. For example, the other devices can be network side devices. The processor 2001 can use the communication interface 2003 to transceive data. The communication interface 2003 can be a transceiver.

[0223] The specific connection medium between the communication interface 2003, the processor 2001 and the memory 2002 in the embodiments of the present application is not limited. In FIG. 20, the memory 2002, the processor 2001 and the communication interface 2003 are connected through a bus 2004, which is represented by a thick line in FIG. 20, and the connection mode between other components is only illustrative and is not limited. The bus can be divided into an address bus, a data bus, a control bus and the like. For convenience of representation, only one thick line is used in FIG. 20, but it does not mean that there is only one bus or only one type of bus.

[0224] In the embodiments of the present application, the processor 2001 can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as execution completed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0225] In the embodiments of the present application, the memory 2002 can be a non-volatile memory such as a hard disk drive (HDD) or a solid-state drive (SSD), and can also be a volatile memory such as a random-access memory (RAM). The memory can be any other medium capable of carrying or storing desired program code in the form of instructions or data structures and capable of being accessed by a computer, but is not limited to this. The memory in the embodiments of the present application can also be a circuit or any other device capable of realizing a storage function, used for storing program instructions and / or data.

[0226] Optionally, the embodiments of the present application also provide a storage device, which comprises a processor and a memory, and the memory stores a computer program, and the computer program is executed by the processor to realize all or part of the steps executed by the storage device in the power supply control method of the above various embodiments.

[0227] Optionally, the embodiments of the present application also provide a computer readable medium, which stores a computer program, and the computer program is executed by a processor to realize all or part of the steps executed by the storage device in the power supply control method of the above various embodiments.

[0228] Optionally, the embodiments of the present application further provide a computer program product, when the computer program product runs on a computer, the computer program product causes the computer to execute the power supply control method of the above various embodiments, all or part of the steps executed by the energy storage device.

[0229] Optionally, the embodiments of the present application further provide an application publishing platform, the application publishing platform is used for publishing a computer program product, wherein when the computer program product runs on a computer, the computer program product causes the computer to execute the power supply control method of the above various embodiments, all or part of the steps executed by the energy storage device.

[0230] It should be noted that: the energy storage device provided in the above embodiments when performing the corresponding steps for control, only the above-mentioned each functional module is divided and taken as an example, in actual application, the above-mentioned functions can be distributed by different functional modules to complete, namely the internal structure of the power supply device is divided into different functional modules, to complete all or part of the functions described above. In addition, the power supply control method and the power supply device provided in the above embodiments belong to the same concept, and the specific implementation process can be mutually referred to, which will not be repeated here.

[0231] The above-mentioned serial numbers of the embodiments of the present application are only for description, not representing the advantages and disadvantages of the embodiments.

[0232] Those skilled in the art can understand that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or by program to instruct related hardware to complete, and the program can be stored in a computer readable storage medium, and the storage medium mentioned herein can be a read-only memory, a magnetic disk or an optical disk.

[0233] The above-mentioned is only optional embodiment of the present application, and does not limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A power supply control method characterized by, The method is applied to an energy storage device including at least one energy storage battery, and the method includes: detecting a first power supply parameter corresponding to a first priority scenario, the first power supply parameter including at least an energy access state and a current remaining capacity of the energy storage battery, and the energy access state being used to indicate that the energy accessed by the energy storage device is first energy accessed through a direct-current power inlet and / or second energy accessed through an alternating-current power inlet; controlling a power supply mode of the energy storage device for supplying power to a connected external load according to the energy access state and the current remaining capacity of the energy storage battery.

2. The power supply control method according to claim 1, wherein The controlling of the power supply mode of the energy storage device for supplying power to the connected external load according to the energy access state and the current remaining capacity of the energy storage battery includes: in a case where the energy access state indicates that the energy accessed by the energy storage device is the first energy, and the current remaining capacity of the energy storage battery is greater than or equal to a first preset capacity threshold, the power supply mode of the energy storage device for supplying power to the connected external load is a mode in which the at least one energy storage battery supplies power to the external load.

3. The power supply control method according to claim 1, wherein The controlling of the power supply mode of the energy storage device for supplying power to the connected external load according to the energy access state and the current remaining capacity of the energy storage battery includes: in a case where the energy access state indicates that the energy accessed by the energy storage device is the first energy and the second energy, and the current remaining capacity of the energy storage battery is greater than or equal to the first preset capacity threshold, a power supply channel of the second energy to the external load is blocked, and the power supply mode of the energy storage device for supplying power to the connected external load is a mode in which the at least one energy storage battery supplies power to the external load.

4. The power supply control method according to claim 1, wherein The method further includes: in a case where the energy access state indicates that the energy accessed by the energy storage device is the first energy and the second energy, and the current remaining capacity of the energy storage battery is greater than or equal to the first preset capacity threshold, a charging mode of the energy storage battery is controlled to be a mode in which the first energy is used to charge the energy storage battery, and a charging channel of the second energy to the energy storage battery is blocked.

5. The power feeding control method according to claim 2 or 3, characterized by, The first preset capacity threshold is selected from a capacity interval in which a first preset proportion is floated up and down around a battery state of charge corresponding to an intersection of a stable voltage platform segment and a second voltage descending segment in a discharge platform curve of the energy storage battery.

6. The power supply control method according to claim 5, wherein The first preset proportion is selected from 3% to 8% of a total capacity of the at least one energy storage battery.

7. The power supply control method according to claim 1, wherein The first power supply parameter further includes a target discharge power required by the external load, a rated power of the energy storage device, a first input power and a second input power of the energy storage device, the first input power being an input power of the first energy, and the second input power being an input power of the second energy. The controlling of the power supply mode of the energy storage device for supplying power to the connected external load according to the energy access state and the current remaining capacity of the energy storage battery includes: According to the power access state, the current remaining power, the target discharge power, the rated power, the first input power, and the second input power, a power supply mode of the energy storage device supplying power to the connected external load is controlled.

8. The power supply control method according to claim 7, wherein The power supply mode of the energy storage device supplying power to the connected external load according to the power access state, the current remaining power, the target discharge power, the rated power, the first input power, and the second input power includes: In a case where the power access state indicates that the power accessed by the energy storage device is the first power and the second power, and the current remaining power is less than a first preset power threshold, a charging compensation power corresponding to the second power is determined according to the rated power and the first input power; A standby discharge power is determined according to the second input power and the charging compensation power; If the standby discharge power is greater than or equal to the target discharge power, the power supply mode of the energy storage device supplying power to the connected external load is a mode of supplying power only through the second power.

9. The power supply control method according to claim 8, wherein The method further includes: If the standby discharge power is less than the target discharge power, the power supply mode of the energy storage device supplying power to the connected external load is a mode of supplying power to the external load through the second power and the energy storage battery together, and a discharge power of the second power is the standby discharge power.

10. The power supply control method according to claim 8 or 9, characterized by, The method further includes: In a case where the current remaining power of the energy storage battery is less than the first preset power threshold, a charging mode of charging the energy storage battery is determined according to the power access state, and it is re-detected whether the current remaining power of the energy storage battery is greater than or equal to a second preset power threshold; the second preset power threshold is greater than the first preset power threshold; In a case where the current remaining power of the energy storage battery is greater than or equal to the second preset power threshold, the power supply mode of the energy storage device supplying power to the connected external load is a mode of supplying power to the external load only through the at least one energy storage battery.

11. The power supply control method according to claim 10, wherein The second preset power threshold is selected from a power interval corresponding to a battery state of charge of a battery overcharge prevention safety voltage in a battery charging curve of the energy storage battery and downward floating a second preset proportion.

12. The power supply control method according to claim 11, wherein The second preset proportion is selected from 3%-8% of a total capacity of the at least one energy storage battery.

13. The power supply control method according to claim 10, wherein The method further includes: After the power supply mode of the energy storage device supplying power to the connected external load is the mode of supplying power to the external load only through the at least one energy storage battery, if the current remaining power is greater than the first preset power threshold and less than the second preset power threshold, the supplying power to the external load through the at least one energy storage battery is maintained.

14. The power supply control method according to claim 1, wherein The method further includes: A second power supply parameter corresponding to a second priority scenario is detected, the second power supply parameter at least including a power access state; the power access state is used to indicate that the power accessed by the energy storage device is first power and / or second power; According to the power access state, a power supply mode of the energy storage device supplying power to the connected external load is controlled.

15. The power supply control method according to claim 14, wherein The power supply mode of the energy storage device supplying power to the connected external load according to the power access state comprises: When the power access state indicates that the power accessed by the energy storage device is the second power, the power supply mode of the energy storage device supplying power to the connected external load is a mode of supplying power to the external load by the second power.

16. The power supply control method according to claim 14, wherein The second power supply parameter further comprises: a target discharge power required by the external load, a rated power of the energy storage device, a first input power and a second input power of the energy storage device; the first input power is the input power of the first power, and the second input power is the input power of the second power; The power supply mode of the energy storage device supplying power to the connected external load according to the power access state comprises: When the power access state indicates that the power accessed by the energy storage device is the first power and the second power, a charging compensation power corresponding to the second power is determined according to the rated power and the first input power; A standby discharge power is determined according to the second input power and the charging compensation power; If the standby discharge power is greater than or equal to the target discharge power, the power supply mode of the energy storage device supplying power to the connected external load is a mode of supplying power by the second power; If the standby discharge power is less than the target discharge power, the power supply mode of the energy storage device supplying power to the connected external load is a mode of supplying power to the external load by the second power and the energy storage battery together, and the discharge power of the second power is the standby discharge power.

17. The power supply control method according to claim 1, wherein The energy storage device comprises a direct current access port and an alternating current access port; When the first power generated by renewable energy is accessed through the direct current access port, the power access state is first power access; When the second power provided by the mains is accessed through the alternating current access port, the power access state is second power access.

18. The method of claim 1, wherein, Before detecting the first power supply parameter corresponding to the first priority scenario, the method further comprises: Detecting a power supply detection scenario of the energy storage device, the power supply detection scenario comprising a first priority scenario and a second priority scenario.

19. A power supply control device characterized by comprising: Applied to an energy storage device, the energy storage device comprising at least one energy storage battery, the device comprises: A first detection module for detecting a first power supply parameter corresponding to a first priority scenario, the first power supply parameter comprising at least a power access state and a current remaining power of the energy storage battery; the power access state indicating that the power accessed by the energy storage device is a first power accessed through a direct current access port and / or a second power accessed through an alternating current access port; A first control module for controlling a power supply mode of the energy storage device supplying power to a connected external load according to the power access state and the current remaining power of the energy storage battery.

20. An energy storage device, comprising: The energy storage device comprises a processor and a memory, the memory storing a computer program, the computer program being executed by the processor to implement the power supply control method according to any one of claims 1 to 18.

21. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, the computer program being executed by a processor to implement the power supply control method according to any one of claims 1 to 18.

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