Discharging method, energy storage power supply, electrical apparatus, and computer-readable storage medium

Abstract

A discharging method for a battery (10), an energy storage power supply (100), an electrical apparatus (200), and a computer-readable storage medium. The discharging method for the battery (10) comprises: acquiring the current temperature of the battery (10) and a valley voltage of the battery (10); when the current temperature of the battery (10) and the valley voltage of the battery (10) satisfy preset conditions, determining the maximum discharge power of the battery (10) on the basis of the current state of charge of the battery (10) and the current temperature of the battery (10); and on the basis of the maximum discharge power of the battery (10), controlling the battery (10) to discharge for a load device (80).

Description

Charging method, energy storage power supply, power consumption device and computer readable storage medium

[0001] Priority information

[0002] This application claims priority and benefits of patent application No. 202311164171.3 filed with the State Intellectual Property Office of China on September 8, 2023, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the field of power supply technology, and in particular to a battery charging method, an energy storage power supply, an electrical device, and a computer-readable storage medium. Background Art

[0004] In related technologies, batteries struggle to function properly in low-temperature conditions due to limitations in low-temperature operation or load capacity issues. While heating batteries at low temperatures can address these issues, heating takes time and consumes additional energy. Furthermore, uneven heating can affect battery consistency and reduce cycle life.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a battery charging method, an energy storage power supply, an electrical device, and a computer-readable storage medium to solve at least one of the above-mentioned technical problems.

[0007] A battery discharging method according to an embodiment of the present application is characterized by comprising:

[0008] Obtaining the current temperature of the battery and the valley voltage of the battery;

[0009] determining the maximum discharge power of the battery according to the current state of charge of the battery and the current temperature of the battery when the current temperature of the battery and the valley voltage of the battery meet preset conditions;

[0010] The battery is controlled to discharge to the load device according to the maximum discharge power of the battery.

[0011] In the above-mentioned discharge method, when the current temperature of the battery and the battery's valley voltage meet the preset conditions, the maximum discharge power required by the battery is adjusted, and the battery then discharges to the load device at the corresponding maximum discharge power, thereby improving the battery's discharge capacity under low temperature conditions and the battery's cycle life without increasing additional energy consumption.

[0012] An energy storage power supply according to an embodiment of the present application includes a battery, a battery management module, a central control module and a discharge module;

[0013] The battery management module is used to obtain the current temperature of the battery and the valley voltage of the battery;

[0014] The central control module is used to determine the maximum discharge power of the battery according to the current state of charge of the battery and the current temperature of the battery when the current temperature of the battery and the valley voltage of the battery meet preset conditions;

[0015] The discharge module is used to control the battery to discharge the load device according to the maximum discharge power of the battery.

[0016] An energy storage power supply according to an embodiment of the present application includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the steps of the charging method described in any one of the above embodiments are implemented.

[0017] An electrical device according to an embodiment of the present application includes a load device and the energy storage power supply according to any one of the above embodiments, wherein the energy storage power supply is electrically connected to the load device.

[0018] A computer-readable storage medium according to an embodiment of the present application stores a computer program, which, when executed by a processor, implements the steps of the charging method described in any one of the above embodiments.

[0019] In the above-mentioned energy storage power supply, power-consuming device, and computer-readable storage medium, when the current temperature of the battery and the battery's valley voltage meet preset conditions, the maximum discharge power required by the battery is adjusted, and the battery then discharges to the load device at the corresponding maximum discharge power, thereby improving the battery's discharge capacity under low temperature conditions and the battery's cycle life without increasing additional energy consumption.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] FIG1 is a schematic flow chart of a battery charging method according to an embodiment of the present application;

[0023] FIG2 is a graph showing test data of a battery according to an embodiment of the present application;

[0024] FIG3 is a schematic diagram of a discharge voltage curve of a battery according to an embodiment of the present application;

[0025] FIG4 is a schematic diagram of a discharge voltage and state of charge curve of a battery of a comparative example;

[0026] FIG5 is a schematic diagram of a discharge voltage and state of charge curve of a battery according to an embodiment of the present application;

[0027] FIG6 is a schematic diagram comparing the battery pressure difference of an embodiment of the present application and the battery pressure difference of a comparative example;

[0028] FIG7 is a schematic diagram of a module of an energy storage power supply according to an embodiment of the present application;

[0029] FIG8 is another module schematic diagram of the energy storage power supply according to an embodiment of the present application;

[0030] FIG9 is a schematic diagram of a module of an electric device according to an embodiment of the present application.

[0031] Reference numerals: energy storage power supply 100 ; battery 10 ; battery management module 20 ; central control module 30 ; discharge module 40 ; inverter 50 ; memory 60 ; processor 70 ; load device 80 ; power consumption device 200 . DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be understood as limiting the present application.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections. They can refer to mechanical connections or electrical connections. They can refer to direct connections or indirect connections through an intermediary. They can refer to internal communication between two components or interactions between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0035] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] The disclosure herein provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described herein. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0037] Referring to FIG. 1 , a discharging method of a battery 10 according to an embodiment of the present application includes:

[0038] Step 001: Obtain the current temperature of the battery 10 and the valley voltage of the battery 10;

[0039] Step 002: When the current temperature of the battery 10 and the valley voltage of the battery 10 meet preset conditions, determine the maximum discharge power of the battery 10 according to the current state of charge of the battery 10 and the current temperature of the battery 10;

[0040] Step 003 : Control the battery 10 to discharge the load device 80 according to the maximum discharge power of the battery 10 .

[0041] In the above-described discharge method, when the current temperature of the battery 10 and the valley voltage of the battery 10 meet preset conditions, the maximum discharge power required by the battery 10 is adjusted, and the battery 10 then discharges the load device 80 at the corresponding maximum discharge power. This improves the discharge capability of the battery 10 under low temperature conditions and the cycle life of the battery 10 without increasing additional energy consumption.

[0042] Specifically, in one embodiment, the system can detect the current temperature of the battery 10 and the valley voltage of the battery 10. The valley voltage of the battery 10 refers to the lowest voltage of the battery 10. For example, at low temperatures, the material properties and high polarization internal resistance of the ternary lithium battery 10 can cause the voltage of the battery 10 to drop rapidly during discharge, reaching its lowest voltage. This lowest voltage is referred to as the valley voltage. The system can be configured with preset conditions. When the current temperature of the battery 10 and the valley voltage of the battery 10 meet the preset conditions, the system can determine the maximum discharge power of the battery 10 based on the current state of charge and the current temperature of the battery 10. The current state of charge of the battery 10 can be read from device records. In one embodiment, after the battery 10 determines the required maximum discharge power, the system can control the battery 10 to discharge the load device 80 at this maximum discharge power, thereby improving the battery 10's discharge capability at low temperatures and extending the battery's cycle life without increasing additional energy consumption.

[0043] It should be noted that generally the battery 10 cannot work normally at low temperatures, and a heating device is needed to heat the battery 10 to solve the problem of low temperature use. The use of a heating device increases additional energy consumption, and it takes a long heating time to heat the battery 10 at low temperatures to the normal usage temperature.

[0044] 2 , in some embodiments, the preset condition is that the current temperature of the battery 10 is within a preset temperature range, and the valley voltage of the battery 10 is greater than the undervoltage protection voltage of the battery 10 .

[0045] In this way, it can be determined that the battery 10 is discharged at the corresponding maximum discharge power.

[0046] Specifically, in the embodiment shown in Figure 2, taking the data of the maximum discharge power of a ternary lithium battery at different low temperatures as an example, the ternary lithium battery is placed in a set low-temperature box and left to stand for more than 12 hours. Then, a computer is connected to read data such as the voltage and temperature of the ternary lithium battery, and a load device 80 is connected to read the load power, and the on-load data of the ternary lithium battery is recorded in real time. In the table, the valley voltage can be represented by Un, where n = 0, 1, 2, 3,..., n, SOC represents the state of charge of the battery 10, BMS represents the battery management system, CUV represents the under-voltage protection voltage of the battery 10, T represents the temperature, and P represents the power. In this example, the under-voltage protection voltage of the battery 10 is a fixed value, and there is no need to change the under-voltage protection voltage of the battery 10. The maximum discharge power can be determined by the discharge gear, and the discharge gear can include gear 1, gear 2, gear 3, gear 4, gear 5, and gear 6.

[0047] In one example, in an environment of -10°C to 60°C, the battery 10 can discharge to any state of charge without dividing the discharge gear.

[0048] In one example, in an environment of -20°C, the load power of the load device 80 can be 1.0P, the current state of charge of the battery 10 can be 100%, the preset temperature of gear 1 can be -10°C < T ≤ -20°C, satisfying the condition that the current temperature of the battery 10 is not greater than the preset temperature. The valley voltage of the battery 10 can be 3.216V, satisfying the condition that the valley voltage of the battery 10 is greater than the under-voltage protection voltage of the battery 10, so that it can be determined that the battery 10 discharges to any state of charge in the discharge gear of gear 1.

[0049] In one example, in an environment of -20°C, the load power of the load device 80 can be 0.7P, the current state of charge of the battery 10 can be 58%, the preset temperature of gear 2 can be -10°C < T ≤ -20°C, satisfying the condition that the current temperature of the battery 10 is not greater than the preset temperature. The valley voltage of the battery 10 can be 3.202V, satisfying the condition that the valley voltage of the battery 10 is greater than the under-voltage protection voltage of the battery 10, so that it can be determined that the battery 10 discharges to any state of charge in the discharge gear of gear 2.

[0050] In one example, in an environment of -20°C, the load power of the load device 80 can be 0.4P, the current state of charge of the battery 10 can be 28%, the preset temperature of gear 3 can be -10°C < T ≤ -20°C, satisfying the condition that the current temperature of the battery 10 is not greater than the preset temperature. The valley voltage of the battery 10 can be 3.050V, satisfying the condition that the valley voltage of the battery 10 is greater than the under-voltage protection voltage of the battery 10, so that it can be determined that the battery 10 discharges to any state of charge in the discharge gear of gear 3.

[0051] In one example, in an environment of -30°C, the load power of the load device 80 can be 0.7P, the current state of charge of the battery 10 can be 100%, the preset temperature of gear 4 can be -20°C < T ≤ -30°C, satisfying the condition that the current temperature of the battery 10 is not greater than the preset temperature. The low-voltage of the battery 10 can be 3.045V, satisfying the condition that the low-voltage of the battery 10 is greater than the under-voltage protection voltage of the battery 10, so that it can be determined that the battery 10 discharges to any state of charge when the discharge gear is gear 4.

[0052] In one example, in an environment of -30°C, the load power of the load device 80 can be 0.4P, the current state of charge of the battery 10 can be 58%, the preset temperature of gear 5 can be -20°C < T ≤ -30°C, satisfying the condition that the current temperature of the battery 10 is not greater than the preset temperature. The low-voltage of the battery 10 can be 3.105V, satisfying the condition that the low-voltage of the battery 10 is greater than the under-voltage protection voltage of the battery 10, so that it can be determined that the battery 10 discharges to any state of charge when the discharge gear is gear 5.

[0053] In one example, in an environment of -30°C, the load power of the load device 80 can be 0.25P, the current state of charge of the battery 10 can be 28%, the preset temperature of gear 6 can be -20°C < T ≤ -30°C, satisfying the condition that the current temperature of the battery 10 is not greater than the preset temperature. The low-voltage of the battery 10 can be 3.076V, satisfying the condition that the low-voltage of the battery 10 is greater than the under-voltage protection voltage of the battery 10, so that it can be determined that the battery 10 discharges to any state of charge when the discharge gear is gear 6.

[0054] It should be noted that gear 1 can set the state of charge range of the battery 10 as 60% ≤ SOC ≤ 100%, gear 2 can set the state of charge range of the battery 10 as 30% ≤ SOC < 60%, gear 3 can set the state of charge range of the battery 10 as 0% < SOC < 30%, gear 4 can set the state of charge range of the battery 10 as 60% ≤ SOC ≤ 100%, gear 5 can set the state of charge range of the battery 10 as 30% ≤ SOC < 60%, and gear 6 can set the state of charge range of the battery 10 as 0% < SOC < 30%.

[0055] Please refer to Figure 2. In some embodiments, the discharging method includes:

[0056] When the current temperature of the battery 10 or the low-voltage of the battery 10 does not meet the preset conditions, control the battery 10 not to discharge.

[0057] In this way, it can play a role in protecting the battery 10.

[0058] Specifically, in one example, in an environment of -20°C, the load power of the load device 80 can be 1.0P, the current state of charge of the battery 10 can be 40%, and the preset temperature of gear 2 can be -10°C < T ≤ -20°C, meeting the condition that the current temperature of the battery 10 is within the preset temperature range. However, the low valley voltage of the battery 10 is less than the undervoltage protection voltage of the battery 10, so that the current temperature of the battery 10 and the low valley voltage of the battery 10 do not meet the preset conditions, and the system can control the battery 10 not to discharge, and the state of charge of the battery 10 does not change.

[0059] In one example, in an environment of -20°C, the load power of the load device 80 can be 0.7P, the current state of charge of the battery 10 can be 20%, and the preset temperature of gear 3 can be -10°C < T ≤ -20°C, meeting the condition that the current temperature of the battery 10 is within the preset temperature range. However, the low valley voltage of the battery 10 is less than the undervoltage protection voltage of the battery 10, so that the current temperature of the battery 10 and the low valley voltage of the battery 10 do not meet the preset conditions, and the system can control the battery 10 not to discharge, and the state of charge of the battery 10 does not change.

[0060] In one example, in an environment of -30°C, the load power of the load device 80 can be 1.0P, the current state of charge of the battery 10 can be 40%, and the preset temperature of gear 4 can be -20°C < T ≤ -30°C, meeting the condition that the current temperature of the battery 10 is within the preset temperature range. However, the low valley voltage of the battery 10 is less than the undervoltage protection voltage of the battery 10, so that the current temperature of the battery 10 and the low valley voltage of the battery 10 do not meet the preset conditions, and the system can control the battery 10 not to discharge, and the state of charge of the battery 10 does not change.

[0061] In one example, in an environment of -30°C, the load power of the load device 80 can be 0.7P, the current state of charge of the battery 10 can be 50%, and the preset temperature of gear 5 can be -20°C < T ≤ -30°C, meeting the condition that the current temperature of the battery 10 is within the preset temperature range. However, the low valley voltage of the battery 10 is less than the undervoltage protection voltage of the battery 10, so that the current temperature of the battery 10 and the low valley voltage of the battery 10 do not meet the preset conditions, and the system can control the battery 10 not to discharge, and the state of charge of the battery 10 does not change.

[0062] In one example, in an environment of -30°C, the load power of the load device 80 can be 0.4P, the current state of charge of the battery 10 can be 20%, and the preset temperature of gear 6 can be -20°C < T ≤ -30°C, meeting the condition that the current temperature of the battery 10 is within the preset temperature range. However, the low valley voltage of the battery 10 is less than the undervoltage protection voltage of the battery 10, so that the current temperature of the battery 10 and the low valley voltage of the battery 10 do not meet the preset conditions, and the system can control the battery 10 not to discharge, and the state of charge of the battery 10 does not change.

[0063] In addition, the embodiment shown in FIG. 3 is a voltage curve graph of discharging at a temperature of -20°C, a state of charge of the battery 10 of 30%, and a load power of the load device 80 of 0.7P in this embodiment. Point D in the figure can represent the low valley voltage in this curve state.

[0064] The embodiment shown in FIG. 4 is a voltage and state of charge curve graph of discharging at a temperature of -20°C, a state of charge of the battery of 40%, and a load power of the load device 80 of 1.0P in a comparative case. The battery discharges at a discharge power of 1.0P at the beginning. Without discharge gear control for discharging, the voltage of the battery will quickly drop to the undervoltage protection voltage of the battery, that is, the low valley voltage of the battery is less than or equal to the undervoltage protection voltage of the battery, and the state of charge of the battery can jump to 0, and the battery no longer discharges. L1 can represent the voltage of the comparative case, and L2 can represent the state of charge of the comparative case.

[0065] The embodiment shown in FIG. 5 is a voltage and state of charge curve graph of discharging at a temperature of -20°C, a state of charge of the battery 10 of 40%, and a load power of the load device 80 of 1.0P in this embodiment. At this time, it can be determined that the discharge gear of the battery 10 is gear 2, but the low valley voltage of the battery 10 is not greater than the undervoltage protection voltage of the battery 10, and the system can control the battery 10 not to discharge, and the state of charge of the battery 10 does not change. L3 can represent the voltage of this embodiment, and L4 can represent the state of charge of this embodiment.

[0066] It should be noted that in the embodiment shown in FIG. 6, multiple batteries 10 can be assembled into a battery pack. L5 can represent the pressure difference between the batteries in the battery pack of the comparative case, and L6 can represent the pressure difference between the batteries 10 in the battery pack of this embodiment. It can be seen from the figure that the curve change amplitude of the pressure difference between the batteries 10 in this embodiment is smaller as the discharge time progresses, which is beneficial to maintaining the voltage consistency between the batteries 10, and thus can help improve the cycle life of the batteries 10.

[0067] Please refer to FIG. 2. In some embodiments, determining the maximum discharge power of the battery 10 according to the current state of charge of the battery 10 and the current temperature of the battery 10 includes:

[0068] determining a discharge position of the battery 10 according to a current state of charge of the battery 10 and a current temperature of the battery 10 ;

[0069] The maximum discharge power of the battery 10 is determined according to the discharge gear of the battery 10 .

[0070] In this way, the maximum discharge power of the battery 10 can be adjusted through the discharge gear.

[0071] Specifically, in one embodiment, the discharge gear can set the maximum discharge power of the corresponding battery 10. The maximum discharge power can be determined by the discharge gear, which can include gear 1, gear 2, gear 3, gear 4, gear 5, and gear 6.

[0072] In one example, the maximum discharge power of the battery 10 corresponding to gear 1 may be 1.0P. The maximum discharge power of the battery 10 corresponding to gear 2 may be 0.7P. The maximum discharge power of the battery 10 corresponding to gear 3 may be 0.4P. The maximum discharge power of the battery 10 corresponding to gear 4 may be 0.7P. The maximum discharge power of the battery 10 corresponding to gear 5 may be 0.4P. The maximum discharge power of the battery 10 corresponding to gear 6 may be 0.25P. It should be noted that the discharge rate may include discharge power and discharge current. It will be understood that in other embodiments, the discharge gear may also determine the discharge current of the battery 10, and ultimately control the discharge of the battery 10 to the load device 80.

[0073] 2 , in some embodiments, controlling the battery 10 to discharge the load device 80 according to the maximum discharge power of the battery 10 includes:

[0074] When the load power of the load device 80 is not greater than the maximum discharge power of the battery 10 , the battery 10 is controlled to discharge the load device 80 .

[0075] In this way, the battery 10 can be controlled to discharge to the load device 80 .

[0076] Specifically, in the discharge gear, a power protection mechanism can be set for the maximum discharge power of the battery 10. When the load power of the load device 80 is not greater than the maximum discharge power of the battery 10, the system can control the battery 10 to discharge the load device 80.

[0077] In one embodiment, the power protection mechanism of gear 1 is that the load power of the load device 80 is not greater than the maximum discharge power of the battery 10, which is 1.0P. The power protection mechanism of gear 2 is that the load power of the load device 80 is not greater than the maximum discharge power of the battery 10, which is 0.7P. The power protection mechanism of gear 3 is that the load power of the load device 80 is not greater than the maximum discharge power of the battery 10, which is 0.4P. The power protection mechanism of gear 4 is that the load power of the load device 80 is not greater than the maximum discharge power of the battery 10, which is 0.7P. The power protection mechanism of gear 5 is that the load power of the load device 80 is not greater than the maximum discharge power of the battery 10, which is 0.4P. The power protection mechanism of gear 6 is that the load power of the load device 80 is not greater than the maximum discharge power of the battery 10, which is 0.25P.

[0078] In conjunction with FIG2 , in certain embodiments, the discharge method includes:

[0079] When the load power of the load device 80 is greater than the maximum discharge power of the battery 10 , the battery 10 is controlled not to discharge.

[0080] In this way, the battery 10 can be controlled not to discharge.

[0081] Specifically, in one example, when it is determined that the discharge gear of the battery 10 is gear 2, the maximum discharge power of the battery 10 at gear 2 is 0.7P. If the load power of the load device 80 is 1.0P, the load power of the load device 80 is greater than the maximum discharge power of the battery 10. The load power of the load device 80 does not meet the power protection mechanism, and the system controls the battery 10 not to discharge.

[0082] In one example, when it is determined that the discharge gear of the battery 10 is gear 3, the maximum discharge power of the battery 10 at gear 3 is 0.4P. If the load power of the load device 80 is 0.7P, the load power of the load device 80 is greater than the maximum discharge power of the battery 10. The load power of the load device 80 does not meet the power protection mechanism, and the system controls the battery 10 not to discharge.

[0083] In one example, when it is determined that the discharge gear of the battery 10 is gear 4, the maximum discharge power of the battery 10 at gear 4 is 0.7P. If the load power of the load device 80 is 1.0P, the load power of the load device 80 is greater than the maximum discharge power of the battery 10. The load power of the load device 80 does not meet the power protection mechanism, and the system controls the battery 10 not to discharge.

[0084] In one example, when it is determined that the discharge gear of the battery 10 is gear 5, the maximum discharge power of the battery 10 at gear 5 is 0.4P. If the load power of the load device 80 is 0.7P, the load power of the load device 80 is greater than the maximum discharge power of the battery 10. The load power of the load device 80 does not meet the power protection mechanism, and the system controls the battery 10 not to discharge.

[0085] In one example, when it is determined that the discharge gear of the battery 10 is gear 6, the maximum discharge power of the battery 10 at gear 6 is 0.25P. If the load power of the load device 80 is 0.4P, the load power of the load device 80 is greater than the maximum discharge power of the battery 10. The load power of the load device 80 does not meet the power protection mechanism, and the system controls the battery 10 not to discharge.

[0086] Referring to FIG7 , an energy storage power supply 100 according to an embodiment of the present application includes a battery 10, a battery management module 20, a central control module 30, and a discharge module 40. The battery management module 20 is configured to obtain the current temperature of the battery 10 and the valley voltage of the battery 10. The central control module 30 is configured to determine the maximum discharge power of the battery 10 based on the current state of charge and the current temperature of the battery 10, if the current temperature and the valley voltage of the battery 10 meet preset conditions. The discharge module 40 is configured to control the discharge of the battery 10 to the load device 80 based on the maximum discharge power of the battery 10.

[0087] In the above-mentioned energy storage power supply 100, when the current temperature of the battery 10 and the valley voltage of the battery 10 meet preset conditions, the maximum discharge power required by the battery 10 is adjusted, and the battery 10 then discharges to the load device 80 at the corresponding maximum discharge power. This improves the discharge capacity of the battery 10 under low temperature conditions and the cycle life of the battery 10 without increasing additional energy consumption.

[0088] Specifically, the energy storage power supply 100 may include a mobile energy storage power supply and a fixed energy storage power supply. The battery management module 20 may be electrically connected to the battery 10. The central control module 30 may be electrically connected to the battery 10. The discharge module 40 may be electrically connected to the battery 10. In one embodiment, the battery management module 20 may obtain the current temperature of the battery 10 and the valley voltage of the battery 10. When the current temperature of the battery 10 and the valley voltage of the battery 10 meet preset conditions, the central control module 30 may determine the maximum discharge power of the battery 10 based on the current state of charge of the battery 10 and the current temperature of the battery 10. The discharge module 40 may control the battery 10 to discharge the load device 80 based on the maximum discharge power of the battery 10.

[0089] In some embodiments, the central control module 30 is configured to control the battery 10 to not discharge when the current temperature of the battery 10 or the valley voltage of the battery 10 does not meet a preset condition.

[0090] In this way, the battery 10 can be controlled not to discharge.

[0091] Specifically, in one embodiment, when the current temperature of the battery 10 or the valley voltage of the battery 10 does not meet a preset condition, the central control module 30 may control the battery 10 not to discharge.

[0092] Referring to FIG. 2 , in some embodiments, the central control module 30 is used to:

[0093] determining a discharge position of the battery 10 according to a current state of charge of the battery 10 and a current temperature of the battery 10 ;

[0094] The maximum discharge power of the battery 10 is determined according to the discharge gear of the battery 10 .

[0095] In this way, the maximum discharge power of the battery 10 can be adjusted through the discharge gear.

[0096] Specifically, in one embodiment, the central control module 30 may determine the discharge level of the battery 10 based on the current state of charge of the battery 10 and the current temperature of the battery 10. The central control module 30 may also determine the maximum discharge power of the battery 10 based on the discharge level of the battery 10. For other detailed embodiments, please refer to the above.

[0097] 7 , in some embodiments, the discharge module 40 includes an inverter 50 . The inverter 50 is configured to control the battery 10 to discharge the load device 80 when the load power of the load device 80 is not greater than the maximum discharge power of the battery 10 .

[0098] In this way, the battery 10 can be controlled to discharge to the load device 80 .

[0099] Specifically, in one embodiment, the inverter 50 can determine the maximum discharge power of the battery 10 based on the discharge level of the battery 10 and set a power protection mechanism for the maximum discharge power of the battery 10. If the load power of the load device 80 is not greater than the maximum discharge power of the battery 10, the inverter 50 can control the battery 10 to discharge the load device 80. For other detailed embodiments, please refer to the above.

[0100] 7 , in some embodiments, the inverter 50 is configured to control the battery 10 to not discharge when the load power of the load device 80 is greater than the maximum discharge power of the battery 10 .

[0101] In this way, the battery 10 can be controlled not to discharge.

[0102] Specifically, in one embodiment, when the load power of the load device 80 is greater than the maximum discharge power of the battery 10, the inverter 50 may control the battery 10 not to discharge. For other detailed embodiments, please refer to the above.

[0103] 8 , an energy storage power supply 100 according to an embodiment of the present application includes a memory 60 and a processor 70. The memory 60 stores a computer program. When the processor 70 executes the computer program, the steps of the charging method according to any of the above embodiments are implemented.

[0104] For example, when the computer program is executed, the following steps may be implemented:

[0105] Step 001: Obtain the current temperature of the battery 10 and the valley voltage of the battery 10;

[0106] Step 002: When the current temperature of the battery 10 and the valley voltage of the battery 10 meet preset conditions, determine the maximum discharge power of the battery 10 according to the current state of charge of the battery 10 and the current temperature of the battery 10;

[0107] Step 003 : Control the battery 10 to discharge the load device 80 according to the maximum discharge power of the battery 10 .

[0108] In the above-mentioned energy storage power supply 100, when the current temperature of the battery 10 and the valley voltage of the battery 10 meet preset conditions, the maximum discharge power required by the battery 10 is adjusted, and the battery 10 then discharges to the load device 80 at the corresponding maximum discharge power. This improves the discharge capacity of the battery 10 under low temperature conditions and the cycle life of the battery 10 without increasing additional energy consumption.

[0109] 9 , an electrical device 200 according to an embodiment of the present application includes a load device 80 and an energy storage power supply according to any of the above embodiments.

[0110] In the above-mentioned electrical device 200, when the current temperature of the battery 10 and the valley voltage of the battery 10 meet the preset conditions, the maximum discharge power required by the battery 10 is adjusted, and the battery 10 then discharges to the load device 80 at the corresponding maximum discharge power, so that the battery 10 improves the discharge capacity of the battery 10 under low temperature conditions without increasing additional energy consumption, and improves the cycle life of the battery 10.

[0111] Specifically, the electrical device 200 includes, but is not limited to, a detector, a field power tool, etc. In one embodiment, the energy storage power supply can be electrically connected to the load device 80. When the current temperature of the battery 10 and the valley voltage of the battery 10 meet preset conditions, the maximum discharge power required by the battery 10 is adjusted. The battery 10 then discharges the load device 80 at the corresponding maximum discharge power. This improves the discharge capacity of the battery 10 under low temperature conditions and the cycle life of the battery 10 without increasing additional energy consumption.

[0112] A computer-readable storage medium according to an embodiment of the present application stores a computer program, which, when executed by a processor 70, implements the steps of the charging method according to any of the above embodiments.

[0113] For example, when the computer program is executed, the following steps may be implemented:

[0114] Step 001: Obtain the current temperature of the battery 10 and the valley voltage of the battery 10;

[0115] Step 002: When the current temperature of the battery 10 and the valley voltage of the battery 10 meet preset conditions, determine the maximum discharge power of the battery 10 according to the current state of charge of the battery 10 and the current temperature of the battery 10;

[0116] Step 003 : Control the battery 10 to discharge the load device 80 according to the maximum discharge power of the battery 10 .

[0117] In the above-mentioned computer-readable storage medium, when the current temperature of the battery 10 and the valley voltage of the battery 10 meet the preset conditions, the maximum discharge power required by the battery 10 is adjusted, and the battery 10 then discharges to the load device 80 at the corresponding maximum discharge power, so that the battery 10 improves the discharge capacity of the battery 10 under low temperature conditions without increasing additional energy consumption, and improves the cycle life of the battery 10.

[0118] The computer-readable storage medium may be provided in the battery management module 20 or in other terminals. The battery management module 20 may communicate with other terminals to obtain corresponding programs.

[0119] It is understood that computer-readable storage media may include: any entity or device capable of carrying a computer program, recording media, USB flash drives, mobile hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), and software distribution media. A computer program includes computer program code. The computer program code may be in source code form, object code form, an executable file, or some intermediate form. Computer-readable storage media may include: any entity or device capable of carrying a computer program code, recording media, USB flash drives, mobile hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), and software distribution media.

[0120] In certain embodiments of the present application, the battery management module 20 may be a single-chip microcomputer chip that integrates a processor, memory, a communication module, etc. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0121] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0122] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, apparatus or device (such as a computer-based system, a system including a processing module, or other system that can fetch instructions from an instruction execution system, apparatus or device and execute instructions), or used in conjunction with such instruction execution systems, apparatuses or devices.

[0123] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that specific features, structures, materials, or characteristics described in conjunction with an embodiment or example are included in at least one embodiment or example of the present application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0124] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery discharge method, characterized in that: include: Acquire the current temperature of the battery and the valley voltage of the battery; When the current temperature of the battery and the valley voltage of the battery meet a preset condition, determining the maximum discharge power of the battery according to the current state of charge of the battery and the current temperature of the battery; The battery is controlled to discharge to a load device according to the maximum discharge power of the battery.

2. The discharge method according to claim 1, characterized in that: The preset condition is that the current temperature of the battery is within a preset temperature range, and the valley voltage of the battery is greater than the undervoltage protection voltage of the battery.

3. The discharge method according to claim 1, characterized in that: The discharge method comprises: When the current temperature of the battery or the valley voltage of the battery does not meet the preset condition, the battery is controlled not to discharge.

4. The discharge method according to claim 1, characterized in that: Determining the maximum discharge power of the battery according to the current state of charge of the battery and the current temperature of the battery includes: Determining a discharge position of the battery according to a current state of charge of the battery and a current temperature of the battery; The maximum discharge power of the battery is determined according to the discharge gear of the battery.

5. The discharge method according to claim 1, characterized in that: According to the maximum discharge power of the battery, controlling the battery to discharge the load device includes: When the load power of the load device is not greater than the maximum discharge power of the battery, the battery is controlled to discharge the load device.

6. The discharge method according to claim 5, characterized in that: The discharge method comprises: When the load power of the load device is greater than the maximum discharge power of the battery, the battery is controlled not to discharge.

7. An energy storage power supply, characterized in that: Including battery, battery management module, central control module and discharge module; The battery management module is used to obtain the current temperature of the battery and the valley voltage of the battery; The central control module is used to determine the maximum discharge power of the battery according to the current state of charge of the battery and the current temperature of the battery when the current temperature of the battery and the valley voltage of the battery meet preset conditions; The discharge module is used to control the battery to discharge to a load device according to the maximum discharge power of the battery.

8. The energy storage power supply according to claim 7, characterized in that: The preset condition is that the current temperature of the battery is within a preset temperature range, and the valley voltage of the battery is greater than the undervoltage protection voltage of the battery.

9. The energy storage power supply according to claim 7, characterized in that: The central control module is used for: When the current temperature of the battery or the valley voltage of the battery does not meet the preset condition, the The battery does not discharge.

10. The energy storage power supply according to claim 7, characterized in that: The central control module is used for: Determining a discharge position of the battery according to a current state of charge of the battery and a current temperature of the battery; The maximum discharge power of the battery is determined according to the discharge gear of the battery.

11. The energy storage power supply according to claim 7, characterized in that: The discharge module includes an inverter, and the inverter is used to: When the load power of the load device is not greater than the maximum discharge power of the battery, the battery is controlled to discharge the load device.

12. The energy storage power supply according to claim 11, characterized in that: The inverter is used for: When the load power of the load device is greater than the maximum discharge power of the battery, the battery is controlled not to discharge.

13. An energy storage power supply, characterized in that: The invention comprises a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the discharge method according to any one of claims 1 to 6 are implemented.

14. An electrical device, characterized in that: It comprises a load device and the energy storage power supply according to any one of claims 7 to 13, wherein the energy storage power supply is electrically connected to the load device.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the discharge method according to any one of claims 1 to 6 are implemented.

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