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

Abstract

The invention discloses a power supply control method and device, energy storage equipment and a storage medium, and belongs to the technical field of energy storage equipment. The power supply control method comprises the following steps: detecting a first power supply parameter corresponding to a first priority scene, wherein the first power supply parameter at least comprises an electric energy access state and the current residual electric quantity of an energy storage battery; the electric energy access state is used for indicating that electric energy accessed by the energy storage equipment is first electric energy accessed through the direct current access port and / or second electric energy accessed through the alternating current access port; and according to the electric energy access state and the current residual electric quantity of the energy storage battery, controlling the power supply mode of the energy storage equipment for supplying power to the connected external load. In the scheme, the corresponding first power supply parameter is set for the first priority scene, the result obtained by detecting the first power supply parameter is used for controlling the power supply mode of the energy storage equipment for supplying power to the connected external load, and the efficiency and adaptability of controlling the power supply mode of the energy storage equipment are improved.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage devices, and in particular to a power supply control method, device, energy storage device and storage medium. Background Art

[0002] With the development of science and technology, various energy storage devices have appeared in people's daily lives. Usually, users can charge energy storage devices and use the power stored in energy storage devices to supply power when the daily power supply is insufficient, in case of emergency.

[0003] However, during the use of energy storage devices, the charge / discharge control of the energy storage devices always requires excessive manual intervention and settings by the user. The degree of intelligence in controlling the charge / discharge process of the energy storage devices is low. The process operation of using the energy storage devices is complicated and cannot automatically and flexibly adapt to the requirements of different scenarios. There are problems of low efficiency and poor adaptability in controlling the energy storage devices. Summary of the invention

[0004] In order to solve the problems of related technologies and improve the efficiency of controlling energy storage devices and the adaptability of power supply methods, the embodiments of the present application provide a power supply control method, device, energy storage device and storage medium. The technical solution is as follows:

[0005] In one aspect, the present application provides a power supply control method, which is applied to an energy storage device, wherein the energy storage device includes at least one energy storage battery, and the method includes:

[0006] Detecting a first power supply parameter corresponding to a first priority scenario, wherein the first power supply parameter includes at least a power access state and a 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 a first power accessed through a DC power access port and / or a second power accessed through an AC power access port;

[0007] According to the power access status and the current remaining power of the energy storage battery, the power supply mode of the energy storage device to supply power to the connected external load is controlled.

[0008] Optionally, the controlling, according to the power access state and the current remaining power of the energy storage battery, a power supply mode of the energy storage device to supply power to a connected external load includes:

[0009] When the power access status indicates that the power accessed by the energy storage device is the first power, and the current remaining power of the energy storage battery is greater than or equal to a first preset power threshold, the power supply method for controlling the energy storage device to supply power to the connected external load is to supply power to the external load through the at least one energy storage battery.

[0010] Optionally, the controlling, according to the power access state and the current remaining power of the energy storage battery, a power supply mode of the energy storage device to supply power to a connected external load includes:

[0011] When the power access status indicates that the power accessed by the energy storage device is the first power and the second power, and the current remaining power of the energy storage battery is greater than or equal to a first preset power threshold, the power supply channel of the second power to the external load is blocked, and the power supply method of controlling the energy storage device to supply power to the connected external load is to supply power to the external load through the at least one energy storage battery.

[0012] Optionally, the method further includes:

[0013] When the power access status indicates that the power accessed by the energy storage device is the first power and the second power, and the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, the charging method of the energy storage battery is to charge the energy storage battery with the first power, and block the charging channel of the second power to the energy storage battery.

[0014] Optionally, the first preset power threshold is selected from a power range corresponding to a first preset ratio fluctuating up and down with the battery charge state corresponding to the intersection of the stable voltage platform segment and the second voltage drop segment in the discharge platform curve of the energy storage battery as the center.

[0015] Optionally, the first preset ratio is selected from 3%-8% of the total capacity of the at least one energy storage battery.

[0016] Optionally, the method further includes:

[0017] When the power access status indicates that the power accessed by the energy storage device is the first power and the second power, and the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, the charging method of the energy storage battery is to charge the energy storage battery with the first power, and block the charging channel of the second power to the energy storage battery.

[0018] Optionally, 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 is an input power of the first electric energy, and the second input power is an input power of the second electric energy;

[0019] 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 includes:

[0020] The power supply mode of the energy storage device to supply power to the connected external load is controlled 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.

[0021] Optionally, 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 includes:

[0022] When 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, determining the charging compensation power corresponding to the second power according to the rated power and the first input power;

[0023] determining a standby discharge power according to the second input power and the charging compensation power;

[0024] If the standby discharge power is greater than or equal to the target discharge power, the energy storage device is controlled to supply power to the connected external load only through the second electric energy.

[0025] Optionally, the method further includes:

[0026] If the standby discharge power is less than the target discharge power, the energy storage device is controlled to supply power to the connected external load by supplying power to the external load through the second electric energy and the energy storage battery, and the discharge power of the second electric energy is the standby discharge power.

[0027] Optionally, the method further includes:

[0028] In the case where the current remaining power of the energy storage battery is less than the first preset power threshold, determining a charging method for charging the energy storage battery according to the power access state, and re-detecting 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;

[0029] When 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 controlling the energy storage device to supply 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.

[0030] Optionally, the second preset power threshold is selected from a battery state of charge corresponding to an overcharge prevention safety voltage of the energy storage battery in a battery charging curve and a power range corresponding to a second preset downward floating ratio.

[0031] Optionally, the second preset ratio is selected from 3%-8% of the total capacity of the at least one energy storage battery.

[0032] Optionally, the method further includes:

[0033] After controlling the energy storage device to supply power to the connected external load in a manner that the external load is supplied with power 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 external load continues to be supplied with power through the at least one energy storage battery.

[0034] Optionally, the method further includes:

[0035] Detecting a second power supply parameter corresponding to the second priority scenario, where the second power supply parameter at least includes a power access status; the power access status is used to indicate whether the power accessed by the energy storage device is the first power and / or the second power;

[0036] The power access state indicates that the power accessed by the energy storage device is the second power, and the power supply mode of controlling the energy storage device to supply power to the connected external load is a mode of supplying power to the external load by the second power.

[0037] Optionally, the second 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 is an input power of the first electric energy, and the second input power is an input power of the second electric energy;

[0038] 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 includes:

[0039] When the power access state indicates that the power accessed by the energy storage device is the first power and the second power, determining the charging compensation power corresponding to the second power according to the rated power and the first input power;

[0040] determining a standby discharge power according to the second input power and the charging compensation power;

[0041] If the standby discharge power is greater than or equal to the target discharge power, controlling the energy storage device to supply power to the connected external load by supplying power through the second electric energy;

[0042] If the standby discharge power is less than the target discharge power, the energy storage device is controlled to supply power to the connected external load by supplying power to the external load through the second electric energy and the energy storage battery, and the discharge power of the second electric energy is the standby discharge power.

[0043] Optionally, the energy storage device includes a direct current inlet and an alternating current inlet;

[0044] When the DC power access port is used to access the first electric energy generated by the renewable energy, the electric energy access state is the first electric energy access;

[0045] When the AC power inlet is used to access the second electric energy provided by the second source, the electric energy access state is the second electric energy access.

[0046] Optionally, before detecting the first power supply parameter corresponding to the first priority scenario, the method further includes:

[0047] A power supply detection scenario of the energy storage device is detected, where the power supply detection scenario includes a first priority scenario and a second priority scenario.

[0048] In another aspect, the present application provides a power supply control device, which is applied to an energy storage device, wherein the energy storage device includes at least one energy storage battery, and the device includes:

[0049] A first detection module, used to detect a first power supply parameter corresponding to a first priority scenario, wherein the first power supply parameter includes at least a power access state and a current remaining power of the energy storage battery; the power access state is used to indicate whether the power accessed by the energy storage device is a first power accessed through a DC power access port and / or a second power accessed through an AC power access port;

[0050] The first control module is used to control the power supply mode of 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.

[0051] In another aspect, the present application provides an energy storage device, which includes 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 as described in one aspect above.

[0052] In another aspect, the present application provides a computer-readable storage medium, in which a computer program is stored. The computer program is executed by the processor to implement the power supply control method as described in one aspect above.

[0053] On the other hand, an embodiment of the present application provides a computer program product. When the computer program product is run on a computer, the computer is enabled to execute the power supply control method as described in one aspect above.

[0054] On the other hand, an embodiment of the present application provides an application publishing platform, which is used to publish a computer program product, wherein when the computer program product runs on a computer, the computer executes the power supply control method as described in one aspect above.

[0055] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0056] The energy storage device detects the first power supply parameter corresponding to the first priority scenario, the first power supply parameter at least including the power access status and the current remaining power of the energy storage battery; the power access status is used to indicate that the power accessed by the energy storage device is the first power accessed through the DC power access port and / or the second power accessed through the AC power access port; according to the power access status and the current remaining power of the energy storage battery, the power supply mode of the energy storage device to supply power to the connected external load is controlled. 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 power access status and the current remaining power of the energy storage battery, combined with the result obtained by detecting the first power supply parameter, the power supply mode of the energy storage device to supply power to the connected external load is controlled, which can meet the detection requirements in specific scenarios, flexibly detect according to different scenarios and the corresponding first power supply parameters, and control the power supply mode, thereby improving the efficiency and adaptability of controlling the power supply mode of the energy storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0058] Figure 1 is a structural schematic diagram of an energy storage device provided by an exemplary embodiment of the present application;

[0059] Figure 2 It is a structural schematic diagram of an energy storage system in a household energy storage scenario involved in an exemplary embodiment of the present application;

[0060] Figure 3 is a flow chart of a power supply control method provided by an exemplary embodiment of the present application;

[0061] Figure 4 is a flow chart of a power supply control method provided by an exemplary embodiment of the present application;

[0062] Figure 5 is a schematic diagram of a setting interface involved in an exemplary embodiment of the present application;

[0063] Figure 6 is a schematic diagram of a charging and discharging platform curve of an energy storage battery involved in an exemplary embodiment of the present application;

[0064] Figure 7 is a schematic diagram of a connection structure of an energy storage device involved in an exemplary embodiment of the present application;

[0065] Figure 8 is a schematic diagram of a display interface of a display screen involved in an exemplary embodiment of the present application;

[0066] Fig. 9 is a schematic diagram of a display interface involved in an exemplary embodiment of the present application;

[0067] Fig.10 is a schematic diagram of another display interface involved in an exemplary embodiment of the present application;

[0068] Fig.11 is a schematic diagram of another display interface involved in an exemplary embodiment of the present application;

[0069] Fig.12 is a schematic diagram of a setting interface involved in an exemplary embodiment of the present application;

[0070] Fig.13 is a schematic diagram of a display interface involved in an exemplary embodiment of the present application;

[0071] Fig.14 An exemplary embodiment of the present application relates to Fig.13 An interface schematic diagram of another display interface;

[0072] Fig.15 An exemplary embodiment of the present application relates to Fig.13 An interface schematic diagram of another display interface;

[0073] Fig.16 An exemplary embodiment of the present application relates to Fig.13 An interface schematic diagram of another display interface;

[0074] Fig.17 An exemplary embodiment of the present application relates to Fig.13 An interface schematic diagram of another display interface;

[0075] Fig.18 An exemplary embodiment of the present application relates to Fig.13 An interface schematic diagram of another display interface;

[0076] Fig.19 is a structural block diagram of a power supply control device provided by an exemplary embodiment of the present application;

[0077] Fig. 20 It is a structural diagram of another example of a power supply control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0078] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0079] The term "multiple" as used herein refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0080] The solution provided in the present application can be used in real-life scenarios where people use energy storage devices for power supply in daily life. To facilitate understanding, some terms and application scenarios involved in the embodiments of the present application are first briefly introduced below.

[0081] Mains electricity is also called AC (power frequency alternating current). It is characterized by the three common quantities of AC: voltage, current, and frequency. The commonly used AC power frequencies in countries around the world are 50Hz (hertz) and 60Hz (hertz), and the civilian AC voltage distribution ranges from 100V to 380V. The computer room generally introduces three-phase 380V, 50HZ mains electricity as the power supply. Under normal circumstances, the power rectifier modules of ordinary equipment mostly use single-phase 220V voltage.

[0082] Green electricity refers to electricity produced in a way that produces zero or close to zero carbon dioxide emissions, which has a lower impact on the environment than electricity produced by other means (such as coal-fired power generation, natural gas power generation, nuclear power generation, etc.). The main sources of green electricity can be electricity produced using technologies such as solar energy, wind power, geothermal energy, and biomass energy.

[0083] Photovoltaic is a photovoltaic power generation system, which uses the photovoltaic effect of semiconductor materials to convert solar radiation into electrical energy. The energy of the photovoltaic power generation system comes from inexhaustible solar energy, which is a clean, safe and renewable energy. The photovoltaic power generation process does not pollute the environment or damage the ecology.

[0084] Inverter discharge: refers to the process of converting direct current into alternating current to power other devices, which can be achieved through an inverter.

[0085] Since the energy people need is highly temporal and spatial, electric energy is the most common one. In order to rationally use electric energy and improve energy utilization, it is necessary to store one form of energy in the same form or convert it into another form of energy through a medium or device, and then release it in a specific form of energy based on future application needs. At present, the main way to generate green electricity is to develop green energy such as photovoltaics and wind power to replace fossil energy.

[0086] Since the generation of green electricity generally relies on photovoltaics, wind power, water potential, etc., and wind and solar energy generally have strong intermittent and volatile problems, which will cause instability in the power grid, insufficient electricity during peak hours, and too much electricity during valley hours. Unstable voltage will also cause damage to electricity. Therefore, insufficient electricity demand or insufficient grid acceptance capacity may cause the problem of "abandoning wind and light". To solve these problems, energy storage must be relied on. That is, electrical energy needs to be converted into other forms of energy through physical or chemical means and stored, and the energy is converted into electrical energy and released when needed. In simple terms, energy storage is similar to a large "power bank". When photovoltaic and wind energy are sufficient, electrical energy is stored and the stored electricity is released when needed.

[0087] With the development of science and technology, various energy storage devices have appeared in people's daily lives. When the daily power supply is insufficient, the power stored in the energy storage device can be used to supply power in case of emergency. Taking electrochemical energy storage as an example, the energy storage device is equipped with a group of chemical batteries, which mainly use the chemical elements in the battery as energy storage media. The charging and discharging process is accompanied by chemical reactions or changes in the energy storage medium. Simply put, the electricity generated by wind and solar energy is stored in chemical batteries, and when the use of external electricity reaches a peak, the stored electricity is released for use, or transferred to places where electricity is scarce for use.

[0088] For example, common energy storage equipment includes large-scale energy storage power stations used in wind power and photovoltaic power stations, which can assist renewable energy generation in meeting grid connection requirements while improving the utilization rate of renewable energy. As a high-quality active / reactive regulating power source on the power supply side, energy storage power stations can achieve load matching of electricity in time and space, enhance the ability to absorb renewable energy, reduce instantaneous power changes, reduce the impact on the power grid, and improve the problem of new energy generation and absorption. They are of great significance in terms of power grid system backup, alleviating peak load power supply pressure, and peak and frequency regulation.

[0089] The energy storage containers used on the power grid side mainly function as peak load shaving, frequency regulation, and relief of grid congestion. They can achieve peak shaving and valley filling of the power load, that is, charging the energy storage batteries when the power load is low, and releasing the stored electricity during the peak period of power load, thereby achieving a balance between power production and consumption.

[0090] There are also small energy storage cabinets used on the power consumption side, which mainly have the functions of self-generation and self-use of electricity, peak-valley price arbitrage, capacity cost management, and improving power supply reliability. Depending on the application scenario, 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 in conjunction with distributed photovoltaics. Industrial and commercial users can use energy storage for valley-peak price arbitrage and capacity cost management.

[0091] In the electricity market that implements peak-valley electricity prices, the energy storage system is charged when the electricity price is low and discharged when the electricity price is high, so as to achieve arbitrage between the peak-valley electricity price difference and reduce the electricity cost. In addition, industrial enterprises that are subject to the two-part electricity price can use the energy storage system to store energy when the electricity consumption is low and discharge it at peak load, thereby reducing the peak power and the maximum demand reported, and achieving the purpose of reducing capacity electricity charges. Household photovoltaic storage can improve the level of self-generation and self-use of electricity. Due to high electricity prices and poor power supply stability, the demand for household photovoltaic installation is driven. Considering that photovoltaics generate electricity during the day, and users generally have higher loads at night, by configuring energy storage, photovoltaic power can be better utilized, the level of self-generation and self-use can be improved, and the cost of electricity can be reduced. In addition, communication base stations, data centers and other fields need to configure energy storage for backup power.

[0092] Please refer to Figure 1 , which shows a schematic diagram of the structure of an energy storage device provided by an exemplary embodiment of the present application. Figure 1 The energy storage device shown includes components such as 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 .

[0093] The processor 110 is the control center of the energy storage device. It uses various interfaces and lines to connect various parts of the entire energy storage device. It 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, so as to monitor the energy storage device as a whole. Optionally, the processor 110 may include one or more processing units; optionally, the processor 110 may integrate an application processor, which mainly processes operating devices, user interfaces, and application programs, etc. Of course, other processors may also be included, which are not listed here one by one.

[0094] The memory 120 can be used to store software programs and modules. The processor 110 executes various functional applications and data processing of the energy storage device by running the software programs and modules stored in the memory 120. The memory 120 may mainly include a program storage area and a data storage area, wherein the program storage area may store operating devices, applications required for at least one function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the energy storage device (such as audio data, phone book, etc.), etc. In addition, the memory 120 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0095] The transceiver 130 can provide wireless communication solutions for energy storage devices, including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR), etc. The transceiver 130 can be one or more devices integrating at least one communication processing module, for example, integrating an antenna and a baseband processor into the transceiver 130, or integrating an antenna and a modem processor into the transceiver 130, etc., without limitation.

[0096] The display unit 140 can be used to display information input by the user or information provided to the 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), etc., which is not limited here.

[0097] The input unit 150 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function controls of the energy storage device. Specifically, the input unit 150 can collect user operations on or near it, and drive the corresponding connection device according to a pre-set program. In addition, the input unit 150 may include a touch panel, which can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel, the input unit 150 may also include other input devices. Specifically, other input devices may include, but are not limited to, one or more of function keys (such as volume control keys, switch keys, etc.), trackballs, joysticks, etc.

[0098] The energy storage device may also include at least one sensor 160, such as a gyroscope sensor, a motion sensor, and other sensors. The motion sensor may include an acceleration sensor for detecting the magnitude of acceleration in all directions, and the magnitude and direction of gravity when stationary, which may be used for applications that identify the posture of the energy storage device, such as horizontal and vertical screen switching, related games, magnetometer posture calibration, etc. As for other sensors that may be configured in the energy storage device, such as a pressure gauge, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., they will not be described in detail here.

[0099] The energy storage device also includes a power module 170 for supplying power to various components. Optionally, the power module 170 can be logically connected to the processor 110 through a power management device, so that the power management device can manage charging, discharging, power consumption and other functions.

[0100] It is 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 may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0101] Optionally, the energy storage equipment involved in this solution can be outdoor cabinet energy storage equipment, portable energy storage power supply, household energy storage integrated machine, photovoltaic energy storage equipment, wind energy storage equipment, etc. in actual applications, which can store electrical energy and provide electrical energy to the outside when power supply function is needed.

[0102] Take the outdoor cabinet energy storage device in the home energy storage scenario as an example, please refer to Figure 2 , which shows a schematic diagram of the structure of an energy storage system in a household energy storage scenario involved in an exemplary embodiment of the present application. Figure 2 As shown, it includes an outdoor cabinet energy storage device 201, an electric energy conversion device 202 (photovoltaic panel), a first user load 203 (street lamp), a second user load 204 (such as air conditioners and other household appliances), etc. Among them, the outdoor cabinet energy storage device 201 is a small energy storage box that can be mounted on an outdoor wall by wall hanging. In daily use, photovoltaic panels can convert solar energy into electrical energy during periods of low electricity prices. The outdoor cabinet energy storage device 201 is used to store the electrical energy and supply it to street lamps and household appliances for use during peak electricity prices, or to supply power when the power grid is out of power / power outages.

[0103] Normally, energy storage devices can supply power to other external devices. In terms of controlling the power supply mode, these energy storage devices will be equipped with some hardware controls. Users can control the energy storage device itself to discharge through inverter or other methods according to actual use. For example, a switch is set on the energy storage device. When the user turns this switch to the first channel, the energy storage device can be controlled to discharge through inverter. When the user turns this switch to the second channel, the energy storage device can be controlled to discharge from the mains. This control process always requires human intervention and control, and the operation is complicated. Moreover, even if some energy storage devices have provided intelligent control algorithms, the power supply method of controlling the energy storage device is relatively simple. It is always necessary to execute a fixed judgment process or method for control, which cannot flexibly adapt to various scenarios. There are problems of low control efficiency and poor adaptability in powering the energy storage device.

[0104] In order to solve the problems of related technologies, improve the efficiency of power supply using energy storage equipment, and improve the adaptability of controlling the power supply method, 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 a first priority scenario, and control the change of the power supply method according to the detection result of the first power supply parameter.

[0105] Please refer to Figure 3 , which shows a flow chart of a power supply control method provided by an exemplary embodiment of the present application, the power supply control method is used in an energy storage device, the energy storage device includes at least one energy storage battery, such as Figure 3 As shown, the power supply control method may include the following steps:

[0106] Step 301, detecting a first power supply parameter corresponding to a first priority scenario, the first power supply parameter including at least a power access status and a current remaining power of the energy storage battery; the power access status is used to indicate that the power accessed by the energy storage device is a first power accessed through a DC power access port and / or a second power accessed through an AC power access port.

[0107] Optionally, in this solution, 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 can be set in advance for different power supply detection scenarios. In different power supply detection scenarios, if the energy storage device needs to supply power, it can detect the power supply conditions corresponding to the current power supply detection scenario, thereby controlling the power supply.

[0108] 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 status and the current remaining power of the energy storage battery; the power access status is used to indicate that the power accessed by the energy storage device is the first power accessed through the DC power access port and / or the second power accessed through the AC power access port.

[0109] Optionally, the energy storage device may generally include a DC power inlet and an AC power inlet. The detection of the first power supply parameter set for the first priority scenario in this solution includes the detection of the power access state of the energy storage device, and the power access state includes the state of accessing the first power only through the DC power inlet, the state of accessing the second power only through the AC power inlet, and the state of accessing the first power and the second power through both the DC power inlet and the AC power inlet. The first power is equivalent to the power corresponding to the input DC power, and the second power is equivalent to the power corresponding to the input AC power.

[0110] In one possible implementation, the energy storage device can detect the first electric energy and the second electric energy connected to the DC power inlet and the AC power inlet in the following manner. For example: the energy storage device can determine the voltage connected to the energy storage device. If the connected voltage is around 176V, it can be determined that the second electric energy (i.e., mains electricity) is connected. If the connected voltage is around 9V, it is the first electric energy (i.e., green electricity). Among them, around 176V can be in the range of 171 to 181V, and around 9V can be in the range of 6V to 12V. The specific numerical range can be flexibly set and is not limited here.

[0111] Optionally, when the number of energy storage batteries is greater than or equal to two, the current remaining power of the energy storage battery may refer to the total remaining power of each energy storage battery included in the entire energy storage device.

[0112] Optionally, the energy storage device can determine the power supply detection scene it is currently in based on the judgment conditions 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 it is currently in. The energy storage device can obtain the indicator to determine the power supply detection scene it is currently in. 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.

[0113] Optionally, since different power supply detection scenarios correspond to different first power supply parameters, when the energy storage device detects the first power supply parameter, it is necessary to detect the first power supply parameter corresponding to the current power supply detection scenario. For example, the first power supply parameter corresponding to the above-mentioned first priority scenario at least includes the power access status and the current remaining power of the energy storage battery. If the power supply detection scenario is the first priority scenario, the first power supply parameter detected here is the power access status corresponding to the first priority scenario and the current remaining power of the energy storage battery.

[0114] Step 302: Control the power supply mode of 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.

[0115] That is, the energy storage device controls the power supply mode of the energy storage device according to the detection result of the first power supply parameter corresponding to the power supply detection scenario. The power supply mode of the energy storage device may also include multiple power supply modes, and different detection results correspond to a power supply mode. The detection result obtained by the detection determines which power supply mode is used for power supply.

[0116] For example, when the power access state is state 1, the current remaining power of the energy storage battery is within the first power range, and the power supply mode in which the energy storage device is controlled to supply power to the connected external load is power supply mode 1. When the power access state is state 2, the current remaining power of the energy storage battery is within the first power range, and the power supply mode in which the energy storage device is controlled to supply power to the connected external load is power supply mode 2, etc. The specific power supply mode depends on the specific situation and is not limited here.

[0117] It should be noted that, since the present solution is to control the power supply mode of the energy storage device, when executing step 301 above, it can be executed when the energy storage device currently needs to power the external device connected to itself. Of course, if no power supply is required, the process of this solution can be omitted.

[0118] In summary, the energy storage device detects the first power supply parameter corresponding to the first priority scenario, and the first power supply parameter at least includes the power access status and the current remaining power of the energy storage battery; the power access status is used to indicate that the power accessed by the energy storage device is the first power accessed through the DC power access port and / or the second power accessed through the AC power access port; according to the power access status and the current remaining power of the energy storage battery, the power supply mode of the energy storage device to supply power to the connected external load is controlled. 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 power access status and the current remaining power of the energy storage battery, and combining the result obtained by detecting the first power supply parameter, the power supply mode of the energy storage device to supply power to the connected external load is controlled, which can meet the detection requirements in specific scenarios, flexibly detect and control the power supply mode according to different scenarios and the corresponding first power supply parameters, and improve the efficiency and adaptability of controlling the power supply mode of the energy storage device.

[0119] In the following, taking the example of an energy storage device in which a user can independently set different power supply detection scenarios and corresponding first power supply parameters, when the energy storage device detects a determined power supply detection scenario, it can detect the corresponding first power supply parameter set by the user, and there is no need to detect each condition in a fixed detection manner, thereby improving the efficiency of controlling the power supply of the energy storage device.

[0120] Please refer to Figure 4 , which shows a flow chart of a power supply control method provided by an exemplary embodiment of the present application, the power supply control method is used in an energy storage device, the energy storage device includes at least one energy storage battery, such as Figure 4 As shown, the power supply control method may include the following steps:

[0121] Step 401 , detecting a power supply detection scenario of an energy storage device, where the power supply detection scenario includes a first priority scenario and a second priority scenario.

[0122] Optionally, different power supply detection scenarios can be pre-edited and set by developers or users, and the energy storage device can detect different first power supply parameters in different power supply detection scenarios, so as to facilitate flexible changes of the energy storage device.

[0123] In one possible implementation, the energy storage device also includes a target switch, and the 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: obtain the switch state of the target switch; and determine the power supply detection scenario corresponding to the switch state according to the switch state. Among them, the switch state can indicate the conduction position of the target switch. For example, when developers design energy storage devices, the target switch can be set to different conduction positions, and different conduction positions correspond to different switch states.

[0124] Optionally, the number of switch states is the same as the number of power supply detection scenarios. For example, the energy storage device provides 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 state also includes state 1, state 2, and state 3. If the acquired switch state is state 1, it is determined that the power supply detection scenario corresponding to state 1 is detection scenario one; if the acquired switch state is state 2, it is determined that the power supply detection scenario corresponding to state 2 is detection scenario two; if the acquired switch state is state 3, it is determined that the power supply detection scenario corresponding to state 3 is detection scenario three.

[0125] The user can set the target switch to a certain position according to their needs. When the energy storage device executes this solution, the corresponding power supply detection scenario can be determined by the switch state. For example, if the user sets the target switch to the first position, and the switch state corresponding to the first position is state 1, then the power supply detection scenario determined is detection scenario 1.

[0126] Optionally, the target switch is provided with an indicator light, and the indicator light has different display colors in different switch states of the target switch. For example, when the target switch is in switch state 1, the indicator light is displayed in red, when the target switch is in switch state 2, the indicator light is displayed in green, when the target switch is in switch state 3, the indicator light is displayed in yellow, etc. Different colors can be used to prompt the user the power supply detection scenario in which the current energy storage device is located.

[0127] In one possible implementation, the energy storage device may determine the power supply detection scenario of the energy storage device as follows: obtain the total amount of AC power output of the energy storage device, where the total amount of AC power output is the total amount of electricity supplied by the energy storage device; determine the power supply detection scenario of the energy storage device based on the total amount of AC power output. For example, the energy storage device may record the total amount of AC power it outputs, obtain the total amount of AC power output that has been provided so far, and determine the power supply detection scenario of the energy storage device based on whether the total amount of AC power output exceeds the preset total amount of AC power. The preset total amount of AC power may be pre-set by the developer or set by the user.

[0128] For example, if the total amount of mains electricity is preset to X thousand degrees, if the total amount of mains electricity output does not exceed the preset total amount of mains electricity, it can be determined that the power supply detection scenario of the energy storage device is detection scenario 1. If the total amount of mains electricity output exceeds the preset total amount of mains electricity, it can be determined that the power supply detection scenario of the energy storage device is detection scenario 2. Among them, the detection scenario 1 and detection scenario 2 mentioned here are named identifiers for different scenarios and are exemplary. For example, detection scenario 1 can be a mains priority scenario, and detection scenario 2 can be a green power priority scenario.

[0129] In one possible implementation, the energy storage device may include a display screen, which is also used to display a setting interface, the setting interface includes 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 may establish a corresponding relationship between the target power supply detection scenario and the target power supply parameter in response to the target power supply detection scenario selected by the first selection control in the setting interface, and the target power supply parameter selected by the second selection control. The target power supply detection scenario is the first priority scenario, and the set target power supply parameter is the first power supply parameter.

[0130] Please refer to Figure 5 , which shows a schematic diagram of a setting interface involved in an exemplary embodiment of the present application. Figure 5 As shown, the setting interface 500 includes a first selection control 501, a second selection control 502, a confirmation control 503, a cancel control 504, and a new control 505. 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 the corresponding first power supply parameter. By triggering the first selection control 501, the user can independently select any power supply detection scenario as the target power supply detection scenario, and triggering the second selection control 502, can independently select any one or more first power supply parameters as the target first power supply parameters. After triggering the confirmation 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, that is, establish a corresponding relationship between the target power supply detection scenario and the target first power supply parameter. Subsequently, through this corresponding relationship, the energy storage device can know which first power supply parameters to be detected in which power supply detection scenario. The user can also add a new power supply detection scenario and the corresponding first power supply parameter by triggering the new space 505.

[0131] In one possible implementation, the energy storage device can also establish a communication connection with the terminal device. Optionally, the terminal device is a rechargeable terminal device. For example, the terminal device can include but is not limited to wearable devices (such as bracelets, smart watches, smart glasses, etc.), mobile phones, tablet computers, laptops, smart glasses, smart watches, MP4 (Moving Picture Experts Group Audio Layer IV, Dynamic Image Experts Compression Standard Audio Layer 4) players, desktop computers, laptops, etc.

[0132] For example, a short-range wireless communication connection can be established between the energy storage device and the terminal device; 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, which carries 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.

[0133] That is, the power supply detection scenario and corresponding power supply parameters of the energy storage device can be set by the terminal device, refer to the above Figure 5 A similar setting interface can also be displayed in the terminal device. After the user triggers the confirmation control, the terminal device can send a setting instruction to the energy storage device. The setting instruction includes the target power supply detection scenario and the corresponding target power supply parameters set by the user in the terminal device. After receiving the setting instruction, the energy storage device parses the setting instruction and establishes a corresponding relationship between the target power supply detection scenario and the target power supply parameters included in the setting instruction.

[0134] It should be noted that, whether it is set by the energy storage device itself or by the terminal device, the power supply parameters corresponding to different power supply detection scenarios are pre-stored in the energy storage device. When performing subsequent detection, it is sufficient to detect the power supply parameters corresponding to the current power supply detection scenario of the energy storage device. There is no need to detect other redundant power supply parameters. In terms of control, it is not necessary to detect in a fixed detection order or method, which reduces the amount of data processing and improves control efficiency. In another case, these power supply detection scenarios and corresponding power supply parameters can also be solidified in the firmware of the energy storage device before leaving the factory (that is, they already exist in the energy storage device in advance), and this solution does not limit the specific settings.

[0135] Taking the power supply detection scenario including the first priority scenario and the second priority scenario as an example, in the case of the first priority scenario, the first power supply parameter at least includes the power access status and the current remaining power of the energy storage battery. In the case of the second priority scenario, the second power supply parameter at least includes the power access status.

[0136] Step 402: The power supply detection scenario of the energy storage device is the first priority scenario, and a first power supply parameter corresponding to the first priority scenario is detected.

[0137] In this embodiment, taking the green power priority scenario as an example, the energy storage device needs to detect the first power supply parameter corresponding to the green power priority scenario. The first power supply parameter includes at least the power access status and the current remaining power of the energy storage battery; the power access status is used to indicate that the power accessed by the energy storage device is the first power accessed through the DC power access port and / or the second power accessed through the AC power access port.

[0138] In terms of hardware, the energy storage device includes a DC power access port and an AC power access port. The DC power access port is used to access the first electric energy generated by renewable energy, and the first power supply parameter at least includes the condition that the DC power access port of the energy storage device has access to the first electric energy. For example, the DC power access port can access the first electric energy generated by photovoltaic power generation, or the first electric energy generated by wind power generation. Here, the DC power access port is also a general term. In actual applications, the access ports set for various renewable energy sources can be the same or different. That is, corresponding to the first electric energy generated by each renewable energy source, the energy storage device can be provided with an independent access port for access. The AC power access port is used to access the first electric energy provided by the city power supply.

[0139] Optionally, when the DC power access port is connected to the first electric energy generated by renewable energy, the electric energy access state in the first power supply parameter is the first electric energy access; when the AC power access port is connected to the second electric energy provided by the mains, the electric energy access state is the second electric energy access. When both access ports have their own electric energy access, the electric energy state is the first electric energy access and the second electric energy access. That is, the electric energy access state includes the state of accessing the first electric energy only through the DC power access port, the state of accessing the second electric energy only through the AC power access port, and the state of accessing the first electric energy through both the DC power access port and the AC power access port.

[0140] Optionally, the detection of the current remaining power in the first power supply parameter can be as follows: detecting the relationship between the current remaining power of the energy storage battery and the first preset power threshold. Then, the detection result includes that the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, or that the current remaining power of the energy storage battery is less than the first preset power threshold.

[0141] Optionally, the first preset power threshold is selected from a power range corresponding to a first preset ratio of fluctuation around the battery charge state corresponding to the intersection of the stable voltage platform segment and the second voltage drop segment in the discharge platform curve of the energy storage battery. Figure 6 , which shows a schematic diagram of a charging and discharging platform curve of an energy storage battery involved in an exemplary embodiment of the present application, including a charging platform curve 601 and a discharging platform curve 602. Figure 6As shown, the charging platform curve 601 includes a stable voltage platform segment 601a, and the discharging platform curve 602 includes a first descending segment 602a and a second descending segment 602b. In the discharging platform curve, as the remaining power of the energy storage battery decreases, the voltage of the energy storage battery also decreases. In the charging platform curve, as the remaining power of the battery increases, the voltage of the energy storage battery also increases. In the discharging platform curve 602, the SOC of the energy storage battery corresponding to the second descending segment 602b is between 0% and 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 this solution, the first preset power threshold can be taken as the case where the SOC value is 30%. That is, the first preset power threshold is 30%, and when detecting the current remaining power, it is determined whether the current remaining power of the energy storage battery is greater than 30%.

[0142] Optionally, the first preset power threshold of 30% is an exemplary example. In actual applications, an arbitrary value can be taken from the power interval obtained by floating the first preset ratio up and down with the above-mentioned intersection as the center. Optionally, the first preset ratio is selected from 3%-8% of the total capacity of at least one energy storage battery. That is, if the above-mentioned intersection is 30%, the first preset power threshold can be any value in [30%±first preset ratio] in addition to the 30% in the above example. For example, if the first preset ratio is selected from 3% in 3%-8%, then the first preset power threshold can take an arbitrary value from the interval [27%, 33%] as the first preset power threshold. If the first preset ratio is selected from 8% in 3%-8%, then the first preset power threshold can take an arbitrary value from the interval [22%, 38%] as the first preset power threshold.

[0143] In the above Figure 6In the example, the remaining power of the energy storage battery of the energy storage device is about 30%, which is a turning point. The remaining power at this point is also relatively easy to judge. For lithium batteries, the discharge platform of lithium batteries mainly represents the time or capacity of the battery to discharge to the rated voltage under the specified discharge conditions when the battery is fully charged. The longer this time is, the higher the discharge platform of the lithium battery is, and the better the battery performance is. When the battery is discharged at a constant current, the change of the battery voltage is drop-stable-drop, where the stable stage is the discharge platform interval, and the working performance of the battery in this interval is relatively stable; 30% of the remaining power corresponds to the turning point of the battery's discharge voltage platform. When the remaining power is greater than 30%, the battery is in the stable section corresponding to the discharge voltage platform, and the voltage discharge hardly changes or changes very little, so that the battery can output power at a stable voltage and the working performance is stable. When the remaining power is less than 30%, the battery's discharge interval exceeds the turning point of the discharge voltage platform. At this time, the battery voltage drops rapidly, the performance is unstable, and it is impossible to output power at a stable voltage. Therefore, the first preset power threshold is set to 30%.

[0144] Optionally, when the above-mentioned first power supply parameter includes at least the power access status and the current remaining power of the energy storage battery, the detection of the first power supply parameter is equivalent to the energy storage device detecting whether there is power access at the two access ports. The energy storage device can also detect whether the current remaining power inside itself exceeds the first preset power threshold for detection. According to the arrangement and combination of these two detection results, the corresponding power supply mode is set, and the energy storage device is controlled to switch between different power supply modes.

[0145] It should be noted that the order of detecting the multiple 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 power of the energy storage device exceeds the first preset power threshold, and then detect the power access status of the energy storage device; or, the energy storage device can first detect the power access status of the energy storage device, and then detect whether the current remaining power of the energy storage device exceeds the first preset power threshold, which is not limited here. Moreover, the two detection processes can also be triggered by conditions. For example, the power access status of the energy storage device is detected only after it is detected that the current remaining power of the energy storage device exceeds the first preset power threshold.

[0146] Step 403, when the power access status indicates that the power accessed by the energy storage device is the first power, and the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, the power supply mode of controlling the energy storage device to supply power to the connected external load is a mode of supplying power to the external load through at least one energy storage battery.

[0147] Optionally, corresponding to the detection result of the above-mentioned 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 remaining power of the energy storage battery is greater than or equal to the first preset power threshold, then the power supply mode of the energy storage device controlling itself to supply power to the external load is to supply power to the external load through at least one energy storage battery. That is, power is supplied to the external side by means of inverter discharge of the energy storage battery.

[0148] Step 404, when the power access status indicates that the power accessed by the energy storage device is the first power and the second power, and the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, the power supply channel of the second power to the external load is blocked, and the power supply mode of controlling the energy storage device to supply power to the connected external load is a mode of supplying power to the external load through at least one energy storage battery.

[0149] Among them, for the detection results of each parameter included in different first power supply parameters, the power supply method ultimately controlled by this scheme is different. Here, after detecting the first power supply parameter in the first priority scenario, the detection results and control results of step 403 and step 404 are used as examples, and there will be more methods in actual applications. For example, when the power access status indicates that the power accessed by the energy storage device is the first power and the second power, and the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, in addition to controlling the power supply method, the energy storage device can also control the charging method of the energy storage battery. For example, in this case, the charging method of the energy storage battery is controlled by charging the energy storage battery with the first power, and blocking the charging channel of the second power to the energy storage battery.

[0150] It can be seen from steps 403 and 404 that in the first priority mode, if the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, regardless of whether the power access status indicates that the power accessed by the energy storage device is the first power or the second power, or both are connected, the energy storage device supplies power to the outside by means of inverting discharge of the energy storage battery. Moreover, in this case, the power supply method of the energy storage device to supply power to the connected external load is still controlled to be a method of supplying power to the external load through at least one energy storage battery. For example, the first power is green power, and the second power is city power. This situation is equivalent to when the energy storage device has both city power and green power connected and the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, in the first priority scenario, the city power output will be blocked, and the city power will not be used to supply power to the outside, and the power will only be supplied to the outside in the form of discharge through its own energy storage battery.

[0151] Optionally, the first power supply parameter at least including the power access status and the current remaining power of the energy storage battery is also exemplary. In actual applications, other conditions or combined with other conditions can also be used for judgment. For example, in one possible implementation, the first power supply parameter can also include the target discharge power required by the external load, the rated power of the energy storage device, the first input power and the second input power of the energy storage device; wherein 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.

[0152] The energy storage device executes a power supply mode of controlling the energy storage device to supply power to the connected external load according to the power access status and the current remaining power of the energy storage battery, which can be as follows: according to the power access status, the current remaining power, the target discharge power, the rated power, the first input power and the second input power, the energy storage device is controlled to supply power to the connected external load.

[0153] Optionally, the energy storage device executes a power supply mode for controlling the energy storage device to supply power to a 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, including: when 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, determining the charging compensation power corresponding to the second power according to the rated power and the first input power; determining the standby discharge power 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, controlling the power supply mode for the energy storage device to supply power to the connected external load is a mode of supplying power only through the second power.

[0154] Optionally, in the above-mentioned result of judging the charging compensation power and the target discharge power, if the standby discharge power is less than the target discharge power, the power supply method of controlling the energy storage device to supply power to the connected external load is to supply power to the external load through the second electric energy and the energy storage battery, and the discharge power of the second electric energy is the standby discharge power.

[0155] For example, the rated power of the energy storage device is 1100W, and the power access status of the energy storage device indicates that both the mains and green electricity are connected, and the power of the green electricity access is 400W. Then, 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 power: (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 and charging compensation power of the mains. For example, the second input power of the currently connected mains is 800W, then the standby discharge power is (800-700) = 100W. If the target discharge power is less than the standby discharge power, then the demand of the external load can be met only by the mains power supply, and the energy storage device controls its own power supply method to be only powered by the mains power.

[0156] 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. Then, the energy storage device not only supplies power to the outside through the mains, but also needs to use the inverter discharge of its own energy storage battery to supply power to the outside. At this time, the discharge power of the mains is 100W, that is, all the excess is used for external discharge.

[0157] Optionally, when the current remaining power of the energy storage battery is less than a first preset power threshold, the charging method for charging the energy storage battery is determined according to the power access status, and the current remaining power of the energy storage battery is re-detected whether it is greater than or equal to a second preset power threshold; the second preset power threshold is greater than the first preset power threshold; when the current remaining power of the energy storage battery is greater than or equal to the second preset power threshold, the power supply method of controlling the energy storage device to supply power to the connected external load is a method of supplying power to the external load only through at least one energy storage battery.

[0158] Optionally, if the power access state is a state in which the first power is accessed only through a DC power inlet, the above-determined charging method is a method of charging through the first power; if the power access state is a state in which the second power is accessed only through an AC power inlet, the above-determined charging method is a method of charging through the second power. Of course, if the power access state is a state in which both the first power and the second power are accessed through a DC power inlet, the battery can be charged with both types of power at the same time. Alternatively, the method of charging with the first power may be preferred. During the charging process of the energy storage battery, the remaining power of the energy storage battery will increase. During continuous monitoring, 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 method of controlling the energy storage device to supply power to the connected external load is a method of supplying power to the external load only through at least one energy storage battery.

[0159] Optionally, the second preset power threshold is selected from the battery state of charge corresponding to the overcharge prevention safety voltage of the energy storage battery in the battery charging curve and the power range corresponding to the second preset floating ratio. The second preset ratio is selected from 3%-8% of the total capacity of at least one energy storage battery.

[0160] Among them, in the above Figure 6 In the figure, the charging platform curve 601 is the battery charging curve of the energy storage battery. The charging platform curve 601 of the energy storage battery of the energy storage device also includes an anti-overcharge safety voltage point 601b. The charge state corresponding to the anti-overcharge safety voltage point 601b is SOC=95%. In addition, in addition to 95%, the second preset power threshold can also take any value in [95%, 95%-second preset ratio]. For example, if the second preset ratio is selected from 3%-8%, then the second preset power threshold can take an arbitrary value from the interval [92%, 95%] as the second preset power threshold. If the second preset ratio is selected from 8% of 3%-8%, then the second preset power threshold can take an arbitrary value from the interval [87%, 95%] as the second preset power threshold.

[0161] Optionally, since the use of the overall device of the energy storage device is continuous, it has a continuous charging and discharging process. Charge the entire device to a fully charged state before releasing it. When the battery is fully charged to 100%, it has a negative impact on the life of the battery. Under the premise that the energy storage device is sufficient as a backup power guarantee, it effectively guarantees the service life of the energy storage device. This solution can select 95% as the charging cycle end threshold (i.e., the second preset power threshold). Moreover, there is an error in the battery SOC calculation. If the SOC is calculated to be 100% now, there may be a situation where it is not fully charged or overcharged under the premise of the error. If the overcharge is caused by the error, it will accelerate the pressure of the chemical reaction inside the battery, resulting in a negative impact on the battery performance and service life. Therefore, the SOC threshold for the end of the charging cycle is adjusted to 95% to ensure the stability of the battery performance and improve the service life of the battery. In addition, when the battery is fully charged, that is, when the battery is fully charged for many times, the chemical reaction inside the battery will intensify, resulting in accelerated battery aging, and there will be a risk of battery expansion for many full charges, which will cause the battery performance to deteriorate or be damaged in the long run. Generally, portable energy storage devices use a BMS (Battery Management System) system to detect SOC. However, under the actual operating conditions of portable energy storage devices, there is a risk of BMS detection out of control due to sensor wear and tear and the diversity of operating environments. Setting the charging cycle cutoff SOC at 95% can reduce the pressure and temperature inside the battery, prevent overcharging caused by BMS system out of control, reduce the risk of battery fire, and improve battery safety.

[0162] Optionally, after controlling the energy storage device to supply power to the connected external load in a mode of supplying power to the external load only through at least one energy storage battery, the energy storage device may 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, continue to supply power to the external load through at least one energy storage battery. That is, it is ensured that 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, so as to avoid the occurrence of over-discharge less than the first preset power threshold.

[0163] Similarly, when the second power supply parameter includes multiple parameters for detection, the detection sequence may be in the same manner as the first power supply parameter, and a fixed detection sequence is not limited, and developers may flexibly design and adjust.

[0164] 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.

[0165] Optionally, if it is detected through step 401 that the current power supply detection scenario is the second priority scenario, step 404 is executed to detect the second power supply parameter corresponding to the second priority scenario, and the power supply mode of the energy storage device is controlled based on the detection result.

[0166] Optionally, taking the example of the second priority scenario being the mains priority scenario, the energy storage device needs to detect the second power supply parameter corresponding to the mains priority scenario. The second power supply parameter includes at least the power access status; the power access status is used to indicate that the power accessed by the energy storage device is the first power accessed through the DC power access port and / or the second power accessed through the AC power access port. In other words, in the second priority scenario, the second power supply parameter is detected, and the power supply method is selected based on the detection result.

[0167] Step 406: Control the power supply mode of the energy storage device to supply power to the connected external load according to the power access status.

[0168] In one possible implementation, step 406 is as follows: when the power access state indicates that the power accessed by the energy storage device is the second power, the power storage device is controlled to supply power to the connected external load by the second power.

[0169] That is to say, in the second priority scenario, after detecting the power access status of the energy storage device, if it is found that it is accessed through the second power, then the power supply method of controlling the energy storage device to supply power to the connected external load is to supply power to the external load through the second power.

[0170] Optionally, the second power supply parameter at least includes the power access status, which is also exemplary. In practical applications, other conditions or other conditions can also be used to make a joint judgment. For example, the second power supply parameter also includes: the target discharge power required by the external load, the rated power of the energy storage device, the first input power and the 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; the above step 406 can be performed as follows: when the power access status indicates that the electric energy accessed by the energy storage device is the first electric energy and the second electric energy, the charging compensation power corresponding to the second electric energy is determined according to the rated power and the first input power; the 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 controlling the energy storage device to supply power to the connected external load is the mode of supplying power by the second electric energy; if the standby discharge power is less than the target discharge power, the power supply mode of controlling the energy storage device to supply power to the connected external load is to supply power to the external load by the second electric energy and the energy storage battery together, and the discharge power of the second electric energy is the standby discharge power. The way in which the energy storage device calculates the charging compensation power and the standby discharge power may refer to the relevant examples in the above step 404, which will not be described in detail here.

[0171] Optionally, the energy storage device controls the power supply mode according to the detection result obtained by the above detection of the first power supply parameter. In this embodiment, the energy storage device includes a green power supply mode, a city power supply mode and an inverter power supply mode. Please refer to Figure 7 , which shows a schematic diagram of the connection structure of an energy storage device involved in an exemplary embodiment of the present application. Figure 7As shown, it includes energy storage device 701, external device 702, mains bypass 703, inverter path 704, mains plug port 705, and green power plug port 706. The energy storage device can access the mains through the mains plug port 705, and can also access the green power through the green power plug port 706. After passing the above detection, if the detection result indicates that the energy storage device is in the first priority scenario, and the power access status indicates that the power accessed by the energy storage device is the first power, and the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, the inverter path 704 outputs the power of the energy storage battery, and then supplies power to the external device. If the power access status indicates that the power accessed by the energy storage device is the first power and the second power, and the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, the power supply channel of the second power to the external load is blocked, that is, the power supply to the external load through the mains is prohibited. In this process, the charging method of the energy storage battery can also be controlled to charge the energy storage battery with the first power. 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 power access status indicates that the power accessed by the energy storage device is the second power. The power supply method for controlling the energy storage device to supply power to the connected external load is to supply power to the external load through the AC power bypass 703.

[0172] In actual control, the AC bypass can be turned on by controlling the relay or output switch to achieve AC discharge. When the energy storage device does not meet the AC power supply conditions, the inverter can be controlled to obtain the stored electric energy from the energy storage device and output it through the inverter path.

[0173] Optionally, the energy storage device of this solution also includes a display screen, and the energy storage device can also display the power supply detection scenario of the energy storage device and the determined power supply mode through the display screen. For example, please refer to Figure 8 , which shows a schematic diagram of a display interface of a display screen involved in an exemplary embodiment of the present application. Figure 8 As shown, it includes a displayed power supply detection scene 801 and a power supply mode 802. The energy storage device displays different icons or information based on different power supply detection scenes and displays different icons or information based on different power supply modes, thereby prompting the user of the current working status of the energy storage device.

[0174] In summary, the energy storage device detects the first power supply parameter corresponding to the first priority scenario, and the first power supply parameter at least includes the power access status and the current remaining power of the energy storage battery; the power access status is used to indicate that the power accessed by the energy storage device is the first power accessed through the DC power access port and / or the second power accessed through the AC power access port; according to the power access status and the current remaining power of the energy storage battery, the power supply mode of the energy storage device to supply power to the connected external load is controlled. 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 power access status and the current remaining power of the energy storage battery, and combining the result obtained by detecting the first power supply parameter, the power supply mode of the energy storage device to supply power to the connected external load is controlled, which can meet the detection requirements in specific scenarios, flexibly detect and control the power supply mode according to different scenarios and the corresponding first power supply parameters, and improve the efficiency and adaptability of controlling the power supply mode of the energy storage device.

[0175] Optionally, in actual applications, energy storage devices usually have the following power supply modes: inverter discharge, mains discharge, and both inverter discharge and mains discharge. In this solution, based on the detection results of power supply parameters in the above different priority scenarios, it is determined which power supply mode is used to power the external load connected to the energy storage device.

[0176] Below, taking the above-mentioned first priority scenario as the green power priority scenario, the second priority scenario as the city power priority scenario, and the current power supply detection scenario of the energy storage device as the green power priority scenario as an example, the content contained in the first power supply parameter is detected to obtain the charge and discharge state that the energy storage device currently needs to be in. Different detection results obtained for the power supply parameter detection in the energy storage device indicate different charge and discharge states that the energy storage device currently needs to be in.

[0177] As far as the determination of charging method is concerned, energy storage equipment may have the following situations:

[0178] For example, when the energy storage device is in a green power priority scenario, the energy storage device detects the first power supply parameter corresponding to the green power priority scenario. In the first case, the power access state included in the first power supply parameter indicates green power access alone. If the energy storage battery is not full, the energy storage battery of the energy storage device is charged with green power. That is, if the energy storage device is connected by green power alone (such as green power generated by photovoltaics), the energy storage battery is only charged with green power.

[0179] Optionally, in the second case: the power access status included in the first power supply parameter indicates a single AC power access, and when the energy storage battery is not full, the AC power is used to charge the energy storage battery of the energy storage device, that is, if the energy storage device is connected to the AC power alone, then only the AC power is used to charge the energy storage battery.

[0180] Optionally, in the third case: the power access status included in the first power supply parameter indicates that both AC power and green power are connected. When the energy storage battery is not full, the energy storage battery can be charged with AC power and / or green power. That is, if the energy storage device has AC power access and green power access, if the current energy storage battery is not full, any one or both types of electricity can be used to charge the energy storage battery at the same time.

[0181] For another example, when the energy storage device is in a non-green electricity priority scenario, if the power access status indicates green electricity access alone, then the green electricity is used to charge the energy storage battery; if the power access status indicates mains access alone, then the mains is used to charge the energy storage battery; if the power access status indicates both green electricity and mains access, the energy storage device uses both types of electricity to charge the energy storage battery at the same time, and the mains access is in compensation mode, that is, all the electricity provided by the green electricity is used for charging, and the mains compensates for the remaining power of the green electricity.

[0182] That is to say, the above situations can be regarded as the energy storage device is not yet connected to an external load, and the energy storage device determines how to charge after detecting the power access state based on the first power supply parameter or the second power supply parameter.

[0183] Next, in combination with the energy storage device being connected to an external load, the energy storage device needs to supply power to the external device. Therefore, in addition to determining the charging method, the corresponding power supply method also needs to be determined. The energy storage device may have the following situations:

[0184] For example, when the energy storage device is in a green power priority scenario, the energy storage device detects the first power supply parameter corresponding to the green power priority scenario. In the first case that is the same as above: the power access status included in the first power supply parameter indicates that green power is accessed separately. When the energy storage battery is not full, the energy storage battery of the energy storage device is charged with the green power. 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. That is, if the SOC calculated based on the current remaining power is greater than 30%, the power supply to the external load is 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 to be output by the energy storage device) is 500W, and the photovoltaic input power is 400W at this time. Then, first of all, when the green power mode is turned on, regardless of the size of the mains power, it is always the photovoltaic charging battery, and the external load is powered by the battery inverter.

[0185] In the second case which is the same as the above: the power access status included in the first power supply parameter indicates that the AC power is accessed alone, and when the energy storage battery is not full, the AC power is used to charge the energy storage battery of the energy storage device; in this case, if the current remaining power included 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, and the power supply channel of the AC power to the external load is blocked.

[0186] In the third case that is the same as the above: the power access status included in the first power supply parameter indicates that both the mains power and the green power are connected. When the energy storage battery is not fully charged, the mains power and / or green power can be used to charge the energy storage battery; in this case, if the current remaining power included 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. If the mains input power is in excess or supplementary discharge from the mains is required (the mains access is in compensation mode), the energy storage device can also open a channel for the mains to discharge the external load and discharge the mains. In other words, although the energy storage device can flexibly choose which power supply method to use, in the green power priority scenario, the energy storage device preferentially uses the inverter discharge power supply method to power the external load. Optionally, in this solution, 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 status of the energy storage device (i.e., charging mode and power supply mode).

[0187] Please refer to Fig. 9 , which shows a schematic diagram of a display interface involved in an exemplary embodiment of the present application. Fig. 9 As shown, the display interface 900 includes a display unit 1 901, a display unit 2 902, and a display unit 3 903. Fig. 9 In the example, the larger the value of the output power parameter, the longer the length of the display unit 1. The lengths of the display unit 1 corresponding to the output power parameter value of the energy storage device is A and the output power parameter value is B are different. Therefore, the display in the display interface 900 is different, so that the user can distinguish the size of the output power parameter.

[0188] For example, the above Fig. 9 The display unit 901 in the display content corresponds to the power supply mode. The length of the display unit 901 can be determined by the size of the output power, thereby displaying different styles.

[0189] Optionally, in addition to displaying the above-mentioned power supply mode, the display screen can also be used to display the conduction status 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 also perform the following steps: determine the conduction status of the access path, and determine the conduction status of the output path; display the conduction status of the access path and the output path on the display screen. Among them, the conduction status includes conduction or non-conduction.

[0190] Please refer to Fig.10 , which shows a schematic diagram of another display interface involved in an exemplary embodiment of the present application. Fig.10 As shown, the display screen 1000 includes an access path icon 1001 and an output path icon 1002. When the energy storage device determines that the access path is connected, the access path icon 1001 is displayed on the display screen. If the access path is not connected, the access path icon 1001 is not displayed on the display screen. The energy storage device determines whether to display the output path icon 1002 in the same way as the method for determining whether to display the access path icon 1001, which will not be repeated here.

[0191] In a possible implementation, the access path is also divided in this solution, corresponding to the above Figure 7 There are two plug-in ports in the middle, and the access paths are also divided into green power access paths and mains access paths. If the energy storage device is charging, determine which access path is connected and display the corresponding path icon on the display screen. The same is true for the corresponding output path icon. If it is directly discharged by battery inverter, the inverter output path icon needs to be displayed. If it is directly output by mains, the mains path icon can be directly displayed.

[0192] Please refer to Fig.11 , which shows a schematic diagram of another display interface involved in an exemplary embodiment of the present application. Fig.11As shown, the display screen 1100 includes a green power access path icon 1101, a mains power access path icon 1102, an inverter output path icon 1103, and a mains power output path icon 1104. When the green power access path icon 1101 is displayed, it indicates that when the external power source is green power, the energy storage device is charged by 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 on, the green power access path icon 1101 can be displayed on the display screen, thereby indicating that the conduction state of the green power access path is on. If the conduction state of the green power access path is not on, the green power access path icon 1101 can be not displayed on the display screen, thereby indicating that the conduction state of the green power access path is not on. Correspondingly, the display of the mains power access path icon 1102 and the display of the output path icon are also the same, and will not be repeated here.

[0193] It should be noted that the detection of the conduction state of the above-mentioned various paths can also be determined by detecting the state of the corresponding conduction switch, thereby obtaining the conduction state of 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 open state, it means that the conduction state of the output path is not conducting. If the load switch is in the closed state, it means that the conduction state of the output path is conducting. The access path can also be indicated by the state of the corresponding path switch, which will not be repeated here.

[0194] 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 a schematic diagram of a setting interface involved in an exemplary embodiment of the present application. Fig.12 As shown, the setting interface 1200 includes a first selection control 1201, a second selection control 1202, a confirmation control 1203, a cancel control 1204, and a new 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. By triggering the first selection control 1201, the user can independently select any power supply detection scenario, and by triggering the second selection control 1202, can independently select any one or more power supply parameters. After triggering the confirmation 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 this 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 the corresponding power supply parameter by triggering the new control 1205.

[0195] 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 a schematic diagram of a display interface involved in an exemplary embodiment of the present application. Fig.13 As shown, the display interface 1300 includes a first display icon 1301, a first selection box 1302, a green power priority scene control 1303, and a mains power priority scene control 1304. The user can trigger the first display icon 1301 on the display screen, such as long pressing, single clicking, double clicking, etc., and the energy storage device can display the first selection box 1302. The user switches the current power supply detection scene of the energy storage device to the scene that the user wants to select by selecting the green power priority scene control 1303 or the mains power priority scene control 1304.

[0196] In the power supply detection scenario, the mains power priority scenario is used, and the power supply mode is the mains power discharge mode. Please refer to Fig.14 , which shows that an exemplary embodiment of the present application involves Fig.13 A schematic diagram of another display interface.

[0197] In the power supply detection scenario, the mains power priority scenario is used, and the power supply mode is the mains charging and discharging mode. Please refer to Fig.15 , which shows that an exemplary embodiment of the present application involves Fig.13 A schematic diagram of another display interface.

[0198] In the power supply detection scenario where the mains power is prioritized and the charging method is both mains power and green power, the energy storage device does not supply power to the external load. Please refer to Fig.16 , which shows that an exemplary embodiment of the present application involves Fig.13 A schematic diagram of another display interface.

[0199] In the case where the power supply detection scenario is the mains priority scenario and the power supply mode is the inverter power supply mode, please refer to Fig.17 , which shows that an exemplary embodiment of the present application involves Fig.13 A schematic diagram of another display interface.

[0200] In the case where the power supply detection scenario is green power priority, the charging method is AC charging, and the power supply method is inverter power supply, please refer to Fig.18 , which shows that an exemplary embodiment of the present application involves Fig.13 A schematic diagram of another display interface.

[0201] Above Figures 13 to 18These are all exemplary. There are other situations in actual applications. The specific judgment logic and determined display parameters can refer to the description in the above embodiments, and will not be listed here one by one.

[0202] Optionally, in the examples of the above-mentioned figures, some of the figures also include the display of charging time or discharge time. For example, the photovoltaic and mains power of the energy storage device are connected together, photovoltaic charging and mains charging, and the mains power supply load and photovoltaic charging battery (when the mains power compensation power is greater than the load power) at the same time. Assume that the energy storage device is connected to an external load, and the target discharge power required by the external load is 200W. At this time, the photovoltaic input power is 400W. Then first, the mains compensation power is 700W (1100-400). If the mains input power is 1000W, then the standby discharge power of 300W at this time is greater than the load power of 200W. Only the mains power supply can meet the needs of the external load. In the state of dual charging and single discharge, only the charging time can be displayed. (First determine 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.

[0203] Alternatively, the photovoltaic and mains power of the energy storage device are connected together, the photovoltaic is charged but the mains power is not charged; the photovoltaic charges the battery and the battery supplies the power. Assuming that the energy storage device is connected to an external load, the target discharge power required by the external load is 500W, and the photovoltaic input power is 400W, then when the green power priority scenario is turned on, regardless of the mains power, the current state is the photovoltaic charging battery and the battery supplies the power. If the output power of the inverter discharge at this moment is 300W, which is less than the output power of 500W, only the discharge time is displayed on the display. (Also, the power is determined first, and then the time is calculated).

[0204] Alternatively, in a possible implementation, after determining the current power supply mode of the energy storage device, the energy storage device may obtain a display duration parameter of a time display icon based on the determined power supply mode.

[0205] Optionally, among the various power supply modes mentioned above, if the power supply mode is an inverter discharge mode, the display duration parameter corresponding to the inverter discharge mode set in the energy storage device may 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.

[0206] Optionally, when the power supply mode is the inverter discharge mode, the energy storage device can obtain the display duration parameters of the time display icon according to the power supply mode as follows: according to the inverter discharge mode, obtain the output voltage, output current and remaining power of the energy storage device; calculate the output power parameter according to the output voltage and output current; calculate the first time parameter according to the remaining power and output power parameters. In other words, when the power supply mode is the inverter discharge mode, the display duration parameters to be displayed must be calculated based on the output voltage, output current and remaining power of the energy storage device. For example, use P 输出 Indicates the output power parameter, V 输出 Indicates the output voltage, I 输出 Represents the output current. The energy storage device can calculate the output power parameter according to the following formula: P 输出 =V 输出 *I 输出 . Use T 剩余 represents the first time parameter, 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 .

[0207] In one possible implementation, the power supply mode includes a charge-discharge power supply mode, and the display duration parameters corresponding to the charge-discharge power supply mode include a charging power parameter of the energy storage device, an output power parameter, and a second time parameter, and the second time parameter is used to indicate the release time of the remaining power of the energy storage device or the full charge time of the energy storage device. Among them, the charge-discharge power supply mode can be regarded as a general term for the above-mentioned mains power supply mode and photovoltaic power supply mode. In the charge-discharge power supply mode, the energy storage device charges itself and discharges to the outside.

[0208] When the power supply mode is a charge-discharge power supply mode, the energy storage device obtains the display duration parameters of the time display icon according to the power supply mode, including: obtaining the charging voltage, charging current, output voltage, output current and remaining power of the energy storage device according to the charge-discharge power supply mode; calculating the charging power parameter according to the charging voltage and charging current; calculating the output power parameter according to the output voltage and output current; calculating the second time parameter according to the remaining power, charging power parameter and output power parameter. That is, in the charge-discharge power supply mode, the display duration parameters include not only the output power parameter, but also the input power parameter and the second time parameter. For example, with P 输入 Indicates the input power parameter, V 输入 Indicates input voltage, 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 above and will not be repeated here. Since the energy storage device is both charging and discharging, the calculation method of the second time parameter is as follows: the energy storage device can detect the calculated input power parameter and output power parameter. 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.

[0209] Optionally, in the above-mentioned mains priority scenario, the power supply mode may also include a mains power supply mode, which does not belong to the above-mentioned charge-discharge power supply mode. In this solution, the display duration parameter corresponding to the mains power supply mode includes not only the output power parameter of the energy storage device, but also the input power parameter of the mains input. In other words, in this power supply mode, the battery of the energy storage device does not need to be used, and the mains is directly used for power supply. For example, a mains bypass can be designed separately in the energy storage device. When the mains power supply mode is used, the input mains is directly exported through the mains bypass to supply power to the external load.

[0210] Optional, in the above Fig. 9 In the display unit 3 903, the second time parameter is indicated, and the display mode of the display unit 3 may be to directly display the parameter value of the time parameter. For example, if the current energy storage device operates according to the current output power parameter and charging power parameter, and the battery of the energy storage device can be fully charged after 30 minutes, then the display unit 3 903 may directly display "30min" to prompt the user of the second time parameter. Of course, as time gets longer, the display mode of the display unit 2 or the display unit 3 may be similar to the above-mentioned display mode of the display unit 2 or the display unit 3, and the length of the display unit 3 may be displayed longer or the number may be displayed more. Here, only the example of directly displaying time is used, and various display modes may be flexibly changed.

[0211] After determining the target display mode of the display unit corresponding to the display duration parameter in the time display icon, each display duration parameter is displayed according to the target display mode, and then a time display icon is formed, through which the current working status of the energy storage device is prompted, specifically which power supply mode is used, and the parameter values ​​of each display duration parameter used by the power supply mode.

[0212] Optionally, the energy storage device can also obtain the target output power, and display an overload prompt message on the display screen when the target output power is greater than the maximum power threshold; the target output power is the total power output of the energy storage device to the external device; the maximum power threshold is the maximum power that the energy storage device can provide; obtain the current temperature of the energy storage device, and display a temperature warning message on the display screen when the current temperature of the energy storage device is greater than the preset temperature threshold; display abnormal operation information on the display screen when the energy storage device operates abnormally. For example, in the above Fig.18 Icon 1801 indicates overload prompt information, icon 1802 indicates temperature warning information, and icon 1803 indicates abnormal working information.

[0213] In summary, the energy storage device detects the first power supply parameter corresponding to the first priority scenario, and the first power supply parameter at least includes the power access status and the current remaining power of the energy storage battery; the power access status is used to indicate that the power accessed by the energy storage device is the first power accessed through the DC power access port and / or the second power accessed through the AC power access port; according to the power access status and the current remaining power of the energy storage battery, the power supply mode of the energy storage device to supply power to the connected external load is controlled. 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 power access status and the current remaining power of the energy storage battery, and combining the result obtained by detecting the first power supply parameter, the power supply mode of the energy storage device to supply power to the connected external load is controlled, which can meet the detection requirements in specific scenarios, flexibly detect and control the power supply mode according to different scenarios and the corresponding first power supply parameters, and improve the efficiency and adaptability of controlling the power supply mode of the energy storage device.

[0214] Optionally, through the various functions of the display interface, users can understand the working status of the energy storage device in real time, so that the comprehensiveness and diversity of the information displayed by the energy storage device are improved, making it easier for users to understand the energy storage device and improving the safety of use.

[0215] The following is an embodiment of the device of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method of the present application.

[0216] Please refer to Fig.19 , which shows a structural block diagram of a power supply control device provided by an exemplary embodiment of the present application. The power supply control device 1900 can be used in an energy storage device, and the energy storage device includes at least one energy storage battery. The energy storage device can execute all or part of the steps performed by the energy storage device in the methods provided by various method embodiments. The power supply control device 1900 includes:

[0217] A first detection module 1901 is used to detect a first power supply parameter corresponding to a first priority scenario, wherein the first power supply parameter includes at least a power access state and a current remaining power of the energy storage battery; the power access state is used to indicate whether the power accessed by the energy storage device is a first power accessed through a DC power access port and / or a second power accessed through an AC power access port;

[0218] The first control module 1902 is used to control the power supply mode of 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.

[0219] In summary, the energy storage device detects the first power supply parameter corresponding to the first priority scenario, and the first power supply parameter at least includes the power access status and the current remaining power of the energy storage battery; the power access status is used to indicate that the power accessed by the energy storage device is the first power accessed through the DC power access port and / or the second power accessed through the AC power access port; according to the power access status and the current remaining power of the energy storage battery, the power supply mode of the energy storage device to supply power to the connected external load is controlled. 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 power access status and the current remaining power of the energy storage battery, and combining the result obtained by detecting the first power supply parameter, the power supply mode of the energy storage device to supply power to the connected external load is controlled, which can meet the detection requirements in specific scenarios, flexibly detect and control the power supply mode according to different scenarios and the corresponding first power supply parameters, and improve the efficiency and adaptability of controlling the power supply mode of the energy storage device.

[0220] Optionally, the first control module 1902 is further configured to:

[0221] When the power access status indicates that the power accessed by the energy storage device is the first power, and the current remaining power of the energy storage battery is greater than or equal to a first preset power threshold, the power supply method for controlling the energy storage device to supply power to the connected external load is to supply power to the external load through the at least one energy storage battery.

[0222] Optionally, the first control module 1902 is further configured to:

[0223] When the power access status indicates that the power accessed by the energy storage device is the first power and the second power, and the current remaining power of the energy storage battery is greater than or equal to a first preset power threshold, the power supply channel of the second power to the external load is blocked, and the power supply method of controlling the energy storage device to supply power to the connected external load is to supply power to the external load through the at least one energy storage battery.

[0224] Optionally, the device further comprises:

[0225] A first blocking module is used for controlling the charging method of the energy storage battery to charge the energy storage battery with the first electric energy, and blocking the charging channel of the second electric energy to the energy storage battery, when 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 remaining power of the energy storage battery is greater than or equal to a first preset power threshold.

[0226] Optionally, the first preset power threshold is selected from a power range corresponding to a first preset ratio fluctuating up and down with the battery charge state corresponding to the intersection of the stable voltage platform segment and the second voltage drop segment in the charge and discharge platform curve of the energy storage battery as the center.

[0227] Optionally, the first preset ratio is selected from 3%-8% of the total capacity of the at least one energy storage battery.

[0228] Optionally, 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 is an input power of the first electric energy, and the second input power is an input power of the second electric energy;

[0229] The first control module 1902 is further configured to:

[0230] The power supply mode of the energy storage device to supply power to the connected external load is controlled 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.

[0231] Optionally, 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 includes:

[0232] When 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, determining the charging compensation power corresponding to the second power according to the rated power and the first input power;

[0233] determining a standby discharge power according to the second input power and the charging compensation power;

[0234] If the standby discharge power is greater than or equal to the target discharge power, the energy storage device is controlled to supply power to the connected external load only through the second electric energy.

[0235] Optionally, the device further comprises:

[0236] The second control module is used to control the energy storage device to supply power to the connected external load by using the second electric energy and the energy storage battery to supply power to the external load if the standby discharge power is less than the target discharge power, and the discharge power of the second electric energy is the standby discharge power.

[0237] Optionally, the device further comprises:

[0238] a re-detection module, configured to determine, when the current remaining power of the energy storage battery is less than the first preset power threshold, a charging method for charging the energy storage battery according to the power access state, and re-detect 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;

[0239] The third control module is used to control the energy storage device to supply power to the connected external load only through the at least one energy storage battery when the current remaining power of the energy storage battery is greater than or equal to the second preset power threshold.

[0240] Optionally, the second preset power threshold is selected from a battery state of charge corresponding to an overcharge prevention safety voltage of the energy storage battery in a battery charging curve and a power range corresponding to a second preset downward floating ratio.

[0241] Optionally, the second preset ratio is selected from 3%-8% of the total capacity of the at least one energy storage battery.

[0242] Optionally, the device further comprises:

[0243] A first maintaining module is used to maintain powering the external load through the at least one energy storage battery after controlling the energy storage device to power the connected external load in a manner that the external load is powered only by 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.

[0244] Optionally, the device further comprises:

[0245] A second detection module is used to detect a second power supply parameter corresponding to a second priority scenario, wherein the second power supply parameter at least includes a power access state; the power access state is used to indicate whether the power accessed by the energy storage device is the first power and / or the second power;

[0246] The fourth control module is used to control the power supply mode of the energy storage device to supply power to the connected external load according to the power access state.

[0247] Optionally, the fourth control module is further used to indicate in the power access state that the power accessed by the energy storage device is the second power, and to control the power supply mode of the energy storage device to supply power to the connected external load by supplying power to the external load through the second power.

[0248] Optionally, the second 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 is an input power of the first electric energy, and the second input power is an input power of the second electric energy;

[0249] The fourth control module is further used for:

[0250] When the power access state indicates that the power accessed by the energy storage device is the first power and the second power, determining the charging compensation power corresponding to the second power according to the rated power and the first input power;

[0251] determining a standby discharge power according to the second input power and the charging compensation power;

[0252] If the standby discharge power is greater than or equal to the target discharge power, controlling the energy storage device to supply power to the connected external load by supplying power through the second electric energy;

[0253] If the standby discharge power is less than the target discharge power, the energy storage device is controlled to supply power to the connected external load by supplying power to the external load through the second electric energy and the energy storage battery, and the discharge power of the second electric energy is the standby discharge power.

[0254] Optionally, the energy storage device includes a direct current inlet and an alternating current inlet;

[0255] When the DC power access port is used to access the first electric energy generated by the renewable energy, the electric energy access state is the first electric energy access;

[0256] When the AC power inlet is used to access the second electric energy provided by the mains, the electric energy access state is the second electric energy access.

[0257] Optionally, the device further comprises:

[0258] The second detection module is used to detect a power supply detection scenario of the energy storage device before detecting the first power supply parameter corresponding to the first priority scenario, wherein the power supply detection scenario includes a first priority scenario and a second priority scenario.

[0259] Please refer to Fig. 20 , which is a structural diagram of another example of the power supply control device provided in the embodiment of the present application. Among them, the power supply control device 2000 can be an energy storage device, and the energy storage device includes a satellite communication module, which can realize the functions of the method provided in the embodiment of the present application. Among them, the power supply control device 2000 can be a chip system. In the embodiment of the present application, the chip system can be composed of chips, and can also include chips and other discrete devices.

[0260] In terms of hardware implementation, the communication module may be a transceiver, which is integrated into the power supply control device 2000 to form a communication interface 2003 .

[0261] The power supply control device 2000 includes at least one processor 2001, which is used to implement or support the power supply control device 2000 to implement the function of the energy storage device in the method provided in the embodiment of the present application. Exemplarily, the processor 2001 can perform detection of the first power supply parameter corresponding to the first priority scenario, and the first power supply parameter at least includes the power access status and the current remaining power of the energy storage battery; the power access status is used to indicate that the power accessed by the energy storage device is the first power accessed through the DC power access port and / or the second power accessed through the AC power access port; according to the power access status and the current remaining power of the energy storage battery, the power supply mode of the energy storage device to supply power to the connected external load is controlled, and other steps. Please refer to the detailed description in the method example for details, which will not be repeated here.

[0262] The power supply control device 2000 may also include at least one memory 2002 for storing program instructions and / or data. The memory 2002 is coupled to the processor 2001. The coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 2001 may operate in conjunction with the memory 2002. The processor 2001 may execute program instructions stored in the memory 2002. At least one of the at least one memory may be included in the processor.

[0263] The power supply control device 2000 may also include a communication interface 2003, which is used to communicate with other devices through a transmission medium, so that the device in the power supply control device 2000 can communicate with other devices. Exemplarily, the other device may be a network side device. The processor 2001 may use the communication interface 2003 to send and receive data. The communication interface 2003 may specifically be a transceiver.

[0264] The specific connection medium between the communication interface 2003, the processor 2001 and the memory 2002 is not limited in the embodiment of the present application. Fig. 20 In the embodiment, the memory 2002, the processor 2001 and the communication interface 2003 are connected via a bus 2004. Fig. 20 The connections between other components are shown in bold lines, which are only for illustration and are not intended to be limiting. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig. 20 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0265] In the embodiment 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 methods, steps and logic block diagrams disclosed in the embodiment of the present application. The general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware processor to be executed, or the hardware and software modules in the processor can be combined and executed.

[0266] In the embodiment 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), etc., and can also be a volatile memory (volatile memory), such as a random access memory (RAM). The memory is any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to this. The memory in the embodiment of the present application can also be a circuit or any other device that can realize a storage function, for storing program instructions and / or data.

[0267] Optionally, an embodiment of the present application further provides an energy storage device, the energy storage device comprising a processor and a memory, the memory storing a computer program, the computer program being executed by the processor to implement all or part of the steps performed by the energy storage device in the power supply control method of each of the above embodiments.

[0268] Optionally, an embodiment of the present application further provides a computer-readable medium storing a computer program, wherein the computer program is executed by a processor to implement all or part of the steps performed by the energy storage device in the power supply control method of each of the above embodiments.

[0269] Optionally, an embodiment of the present application further provides a computer program product, which, when executed on a computer, enables the computer to execute all or part of the steps executed by the energy storage device to implement the power supply control method of each of the above embodiments.

[0270] Optionally, an embodiment of the present application further provides an application publishing platform, which is used to publish a computer program product, wherein when the computer program product runs on a computer, the computer executes all or part of the steps performed by the energy storage device to implement the power supply control method of each embodiment as described above.

[0271] It should be noted that: when the energy storage device provided in the above embodiment executes the corresponding steps for control, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, 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 provided in the above embodiment and the power supply device embodiment belong to the same concept, and their specific implementation processes can refer to each other, which will not be repeated here.

[0272] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0273] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the storage medium mentioned here may be a read-only memory, a disk or an optical disk, etc.

[0274] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A power supply control method, characterized in that: Applied to an energy storage device, the energy storage device includes at least one energy storage battery, and the method includes: Detecting a first power supply parameter corresponding to a first priority scenario, wherein the first power supply parameter includes at least a power access state and a 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 a first power accessed through a DC power access port and / or a second power accessed through an AC power access port; According to the power access status and the current remaining power of the energy storage battery, the power supply mode of the energy storage device to supply power to the connected external load is controlled.

2. The power supply control method according to claim 1, characterized in that: 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 includes: When the power access status indicates that the power accessed by the energy storage device is the first power, and the current remaining power of the energy storage battery is greater than or equal to a first preset power threshold, the power supply method for controlling the energy storage device to supply power to the connected external load is to supply power to the external load through the at least one energy storage battery.

3. The power supply control method according to claim 1, characterized in that: 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 includes: When the power access status indicates that the power accessed by the energy storage device is the first power and the second power, and the current remaining power of the energy storage battery is greater than or equal to a first preset power threshold, the power supply channel of the second power to the external load is blocked, and the power supply method of controlling the energy storage device to supply power to the connected external load is to supply power to the external load through the at least one energy storage battery.

4. The power supply control method according to claim 1, characterized in that: The method further comprises: When the power access status indicates that the power accessed by the energy storage device is the first power and the second power, and the current remaining power of the energy storage battery is greater than or equal to the first preset power threshold, the charging method of the energy storage battery is to charge the energy storage battery with the first power, and block the charging channel of the second power to the energy storage battery.

5. The power supply control method according to claim 2 or 3, characterized in that: The first preset power threshold is selected from a power range corresponding to a first preset ratio floating up and down with the battery charge state corresponding to the intersection of the stable voltage platform segment and the second voltage drop segment in the discharge platform curve of the energy storage battery as the center.

6. The power supply control method according to claim 5, characterized in that: The first preset ratio is selected from 3%-8% of the total capacity of the at least one energy storage battery.

7. The power supply control method according to claim 1, characterized in that: The first power supply parameter also includes: the target discharge power required by the external load, the rated power of the energy storage device, the first input power and the 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; 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 includes: The power supply mode of the energy storage device to supply power to the connected external load is controlled 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.

8. The power supply control method according to claim 7, characterized in that: 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 includes: When 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, determining the charging compensation power corresponding to the second power 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; If the standby discharge power is greater than or equal to the target discharge power, the energy storage device is controlled to supply power to the connected external load only through the second electric energy.

9. The power supply control method according to claim 8, characterized in that: The method further comprises: If the standby discharge power is less than the target discharge power, the energy storage device is controlled to supply power to the connected external load by supplying power to the external load through the second electric energy and the energy storage battery, and the discharge power of the second electric energy is the standby discharge power.

10. The power supply control method according to claim 8 or 9, characterized in that: The method further comprises: In the case where the current remaining power of the energy storage battery is less than the first preset power threshold, determining a charging method for charging the energy storage battery according to the power access state, and re-detecting 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; When 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 controlling the energy storage device to supply 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, characterized in that: The second preset power threshold is selected from the battery state of charge corresponding to the overcharge prevention safety voltage of the energy storage battery in the battery charging curve and the power range corresponding to the second preset downward floating ratio.

12. The power supply control method according to claim 11, characterized in that: The second preset ratio is selected from 3%-8% of the total capacity of the at least one energy storage battery.

13. The power supply control method according to claim 10, characterized in that: The method further comprises: After controlling the energy storage device to supply power to the connected external load in a manner that the external load is supplied with power 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 external load continues to be supplied with power through the at least one energy storage battery.

14. The power supply control method according to claim 1, characterized in that: The method further comprises: Detecting a second power supply parameter corresponding to the second priority scenario, where the second power supply parameter at least includes a power access status; the power access status is used to indicate whether the power accessed by the energy storage device is the first power and / or the second power; According to the power access status, the power supply mode of the energy storage device to supply power to the connected external load is controlled.

15. The power supply control method according to claim 14, characterized in that: The power supply mode of controlling the energy storage device to supply power to the connected external load according to the power access state includes: The power access state indicates that the power accessed by the energy storage device is the second power, and the power supply mode of controlling the energy storage device to supply 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, characterized in that: The second power supply parameter further includes: the target discharge power required by the external load, the rated power of the energy storage device, the first input power and the 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; The power supply mode of controlling the energy storage device to supply power to the connected external load according to the power access state includes: When the power access state indicates that the power accessed by the energy storage device is the first power and the second power, determining the charging compensation power corresponding to the second power 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; If the standby discharge power is greater than or equal to the target discharge power, controlling the energy storage device to supply power to the connected external load by supplying power through the second electric energy; If the standby discharge power is less than the target discharge power, the energy storage device is controlled to supply power to the connected external load by supplying power to the external load through the second electric energy and the energy storage battery, and the discharge power of the second electric energy is the standby discharge power.

17. The power supply control method according to claim 1, characterized in that: The energy storage device includes a direct current inlet and an alternating current inlet; When the DC power access port is used to access the first electric energy generated by the renewable energy, the electric energy access state is the first electric energy access; When the AC power inlet is used to access the second electric energy provided by the mains, the electric energy access state is the second electric energy access.

18. The method according to claim 1, characterized in that Before detecting the first power supply parameter corresponding to the first priority scenario, the method further includes: A power supply detection scenario of the energy storage device is detected, where the power supply detection scenario includes a first priority scenario and a second priority scenario.

19. A power supply control device, characterized in that: Applied to an energy storage device, the energy storage device includes at least one energy storage battery, and the device includes: A first detection module, used to detect a first power supply parameter corresponding to a first priority scenario, wherein the first power supply parameter includes at least a power access state and a current remaining power of the energy storage battery; the power access state is used to indicate whether the power accessed by the energy storage device is a first power accessed through a DC power access port and / or a second power accessed through an AC power access port; The first control module is used to control the power supply mode of 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.

20. An energy storage device, characterized in that: The energy storage device includes a processor and a memory, wherein a computer program is stored in the memory, and the computer program is 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, and the computer program is executed by a processor to implement the power supply control method according to any one of claims 1 to 18.

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