Battery pack discharge control method, device, power-consuming equipment and storage medium

Abstract

The present application discloses a battery pack discharge control method, device, electrical equipment and storage medium, belonging to the field of battery technology. The battery pack discharge control method includes: when the remaining power of the battery pack reaches a preset power control threshold, obtaining the average current of the current discharge; determining the predicted discharge time based on the average current and the power control threshold; determining the discharge rate based on the predicted discharge time and the power control threshold; and controlling the discharge of the battery pack based on the discharge rate until the remaining power is discharged. In this way, the present application sets the power control threshold so that the discharge rate is determined when the remaining power of the battery pack reaches the power control threshold, and controls the battery pack to discharge smoothly through the discharge rate, avoiding power jumps caused by the increase in the voltage difference between the single cells of the battery pack, maintaining the normal operation of the battery pack, and improving the safety of the battery pack.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and specifically relates to a battery pack discharge control method, device, electrical equipment and storage medium. Background Art

[0002] A battery pack usually includes multiple cells. As the usage time increases, the voltage difference between the cells increases. When discharging, the voltage of each cell drops at different speeds. When a cell reaches the cut-off voltage ahead of time, the voltage of the battery pack will drop sharply in a short period of time, resulting in a power jump phenomenon, which affects the normal operation of the battery pack. Summary of the invention

[0003] Purpose of the invention: The present application provides a battery pack discharge control method for solving the problem that the voltage difference between single cells becomes larger, resulting in a phenomenon of power jump, which affects the normal operation of the battery pack; the present application also provides a battery pack discharge control device; the present application also provides an electrical device; the present application also provides a computer-readable storage medium.

[0004] Technical solution: This application provides a battery pack discharge control method for controlling the discharge of a battery pack, comprising:

[0005] When the remaining power of the battery pack reaches a preset power control threshold, obtaining the current average discharge current;

[0006] Determining a predicted discharge time based on the average current and the power control threshold;

[0007] Determining a discharge rate based on the predicted discharge time and the power control threshold;

[0008] The battery pack is controlled to discharge based on the discharge rate until the remaining power is completely discharged.

[0009] In some embodiments, the power control threshold is preset based on the following steps:

[0010] Determining a reference power value based on the historical jump power value of the battery pack;

[0011] The power control threshold is determined based on the reference power value and the preset control range.

[0012] In some embodiments, determining a reference power value based on a historical jump power value of the battery pack includes:

[0013] Obtaining the jump amplitude of the power value of the battery pack when a jump occurs during the historical discharge process;

[0014] When the jump amplitude is greater than or equal to a preset amplitude, accumulating the number of jumps of the battery pack;

[0015] When the number of jumps is equal to the preset number of times, the power value of the battery pack at the last jump is stored as the reference power value.

[0016] In some embodiments, the preset amplitude is 3-7%, and the preset number of times is 15-25 times.

[0017] In some embodiments, determining the power control threshold based on the reference power value and the preset control range includes:

[0018] The sum of the reference power value and the preset control range is determined as the power control threshold, wherein the preset control range is 5-15%.

[0019] In some embodiments, the predicted discharge time is obtained by the following formula:

[0020]

[0021] Wherein, T is the predicted discharge time, RC is the power control threshold, and A is the average current.

[0022] In some embodiments, the discharge rate is obtained based on the following formula:

[0023]

[0024] Among them, V is the discharge rate, T is the predicted discharge time, and RC is the power control threshold.

[0025] Accordingly, the present application also provides a battery pack discharge control device, comprising:

[0026] A first acquisition module is configured to acquire an average current of current discharge when the remaining power of the battery pack reaches a preset power control threshold;

[0027] A second acquisition module is configured to determine a predicted discharge time based on the average current and the power control threshold;

[0028] A third acquisition module is configured to determine a discharge rate based on the predicted discharge time and the power control threshold;

[0029] The control module is configured to control the discharge of the battery pack based on the discharge rate until the remaining power is completely discharged.

[0030] Accordingly, the present application also provides an electric device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor;

[0031] Wherein, when the processor executes the computer program, it can be used to execute the steps of the battery pack discharge control method as described in any one of the above embodiments.

[0032] Correspondingly, the present application also provides a computer-readable storage medium, which stores a computer program, and the computer program is used to enable a processor to implement the steps of the battery pack discharge control method as described in any one of the above embodiments when executed.

[0033] Beneficial effect: Compared with the prior art, the battery pack discharge control method provided in the embodiment of the present application includes: when the remaining power of the battery pack reaches a preset power control threshold, obtaining the average current of the current discharge; determining the predicted discharge time based on the average current and the power control threshold; determining the discharge rate based on the predicted discharge time and the power control threshold; and controlling the discharge of the battery pack based on the discharge rate until the remaining power is discharged. In this way, the present application sets the power control threshold so that the discharge rate is determined when the remaining power of the battery pack reaches the power control threshold, and controls the battery pack to discharge smoothly through the discharge rate, avoiding power jumps caused by the increase in the voltage difference between the single cells of the battery pack, maintaining the normal operation of the battery pack, and improving the safety of the battery pack.

[0034] It can be understood that, compared with the prior art, the battery pack discharge control device provided in the embodiment of the present application includes all the technical features and technical effects of the above-mentioned battery pack discharge control method, which will not be repeated here.

[0035] It can be understood that, compared with the prior art, an electrical device provided in an embodiment of the present application includes all the technical features and technical effects of the above-mentioned battery pack discharge control method, which will not be repeated here.

[0036] It can be understood that, compared with the prior art, the computer-readable storage medium provided in the embodiment of the present application includes all the technical features and technical effects of the above-mentioned battery pack discharge control method, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0038] Figure 1 A schematic diagram of a first flow chart of a battery pack discharge control method provided in an embodiment of the present application;

[0039] Figure 2 A second flow chart of the battery pack discharge control method provided in an embodiment of the present application;

[0040] Figure 3A schematic diagram of the structure of a battery pack discharge control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0042] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0043] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application.

[0044] The present application embodiment provides a battery pack discharge control method, see Figure 1 , Figure 1 The first flow chart of the battery pack discharge control method provided by the embodiment of the present application is illustrated. The battery pack discharge control method provided by the embodiment of the present application includes the following steps 101 to 104.

[0045] Step 101, when the remaining power of the battery pack reaches the preset power control threshold, the current average current of the discharge is obtained. The current average current of the discharge here refers to the average discharge current of the battery pack within the preset time before the power control threshold is reached, rather than the instantaneous current when the remaining power reaches the power control threshold. Since the battery pack may be discharged multiple times from being fully charged to being discharged to the power control threshold, the preset time here can be a few seconds, more than ten seconds, a few minutes or other possible preset time to improve the accuracy of subsequent steps.

[0046] Specifically, a battery pack usually includes multiple single cells, and the total power of the battery pack is the sum of the power of the multiple single cells. When the battery pack is operating normally, multiple single cells are discharged, the voltages of the multiple single cells drop synchronously, and the cut-off voltages of each single cell are the same. Each single cell finishes discharging at almost the same time. Therefore, the battery pack will gradually discharge until the discharge ends. Specifically, the gradual discharge of the battery pack refers to the battery pack discharging uniformly from a full-charge state to the end at a certain discharge amplitude. For example, the battery pack discharges uniformly from 100% to 0% at a discharge amplitude of 1%. It is understandable that in this process, as the battery pack starts and stops, the battery pack may have multiple discharge interruptions and continuations. For example, the battery pack discharges uniformly from 100% to 80% at a discharge amplitude of 1%, and the battery pack discharges. After a period of time, the battery pack discharges uniformly from 80% to 50% at a discharge amplitude of 1%, and so on many times until it is discharged to 0%. As the battery pack is used for a longer time, affected by the environment or other usage scenarios, the decay of each single cell is different, and the cut-off voltage of each single cell is also different. In order to avoid this situation causing the battery pack power jump, the present application sets a power control threshold. It can be understood that the power control threshold needs to be greater than the highest cut-off voltage in the single cell, so that the control step of the present application is entered before the battery pack reaches the highest cut-off voltage in the single cell, that is, the control is intervened before the battery pack starts to jump, so that the battery pack discharges stably until the end of discharge, maintains the normal operation of the battery pack, and improves the safety of the battery pack.

[0047] In some embodiments, the power control threshold is preset based on the following steps 201 to 202 .

[0048] Step 201, determine the reference power value based on the historical jump power values ​​of the battery pack. Specifically, the historical jump value refers to the power value of the battery pack that jumps for the first time from a fully charged state to the end of discharge since the battery pack left the factory to the current moment. From leaving the factory to the current moment, the battery pack has undergone multiple processes from a fully charged state to the end of discharge. After a period of use, the battery pack begins to experience power jumps. Therefore, the present application determines the power control threshold based on the historical jump power values ​​of the battery pack, so as to achieve the control steps of the present application before the battery pack reaches the highest cut-off voltage in the single cell, that is, to start intervention control before the battery pack begins to jump in power, so that the battery pack can discharge stably until the end of discharge, maintain the normal operation of the battery pack, and improve the safety of the battery pack.

[0049] Please refer again Figure 1 , see also Figure 2 , Figure 2 The second flow chart of the battery pack discharge control method provided by the embodiment of the present application is illustrated. In some embodiments, step 201 determines a reference power value based on the historical jump power value of the battery pack, including the following steps 301 to 303.

[0050] Step 301, obtain the jump amplitude of the power value of the battery pack when a jump occurs during the historical discharge process. It is understandable that when the power of the battery pack first jumps, the jump amplitude will not be large, for example, only 2%~3%, but as the battery pack is used, the jump amplitude gradually increases, and there may even be a jump amplitude greater than 5% or higher. Therefore, the present application needs to first obtain the jump amplitude of the power value of the battery pack when a jump occurs during the historical discharge process, in preparation for subsequent steps. It should be noted that the historical discharge process of the present application refers to the process in which the battery pack has undergone multiple changes from a fully charged state to the end of discharge since it left the factory to the current moment.

[0051] Step 302, when the jump amplitude is greater than or equal to the preset amplitude, the number of jumps of the battery pack is accumulated. It is understandable that when the battery pack power starts to jump, the number of jumps is not large and the jump amplitude is not large, but as the battery pack is used, the number of jumps gradually increases and the jump amplitude gradually increases. There are many reasons for the jump of the battery pack power, such as: the temperature change of the use environment. Since the power of the battery pack is greatly affected by the ambient temperature, the voltage of the battery pack will change at extreme temperatures, resulting in power jumps; when the battery pack is discharged at high power, such as when starting an electric vehicle or accelerating quickly, the voltage of the battery pack will drop temporarily, resulting in power jumps; when there is a fault in the charging or discharging system of the battery pack, the measurement of power may be inaccurate or jump; damage or failure of the internal components of the battery pack may cause sudden changes in power, such as internal connection detachment, battery cell damage or battery management system failure; as time goes by, the single cell ages, and the performance of the single cell will decline, including capacity reduction and internal resistance increase, resulting in unstable measurement of the battery pack power and jumps. The present application is mainly used for the jump of battery pack power caused by the aging of single cells. Therefore, when the jump amplitude is greater than or equal to the preset amplitude, the jump times of the battery pack are accumulated to eliminate the interference caused by other jump reasons and improve the accuracy of battery pack discharge control.

[0052] Step 303, when the number of jumps is equal to the preset number of times, the power value of the battery pack at the last jump is stored as the reference power value. Similarly, since the reasons for the battery pack power jump include not only the aging of the single cells, but also the temperature change of the use environment, the high-power discharge of the battery pack, the fault of the charging or discharging system of the battery pack, or the damage or fault of the internal components of the battery pack, if the control is started after one jump, there may be a possibility of misjudgment. Therefore, in the present application, when the number of jumps is equal to the preset number of times, or when the number of jumps exceeds the preset number of times, the power value of the battery pack at the last jump is stored as the reference power value to eliminate the interference caused by other jump reasons and improve the accuracy of the battery pack discharge control. Taking into account that the battery pack may have multiple power jumps in the process of going from a fully charged state to the end of discharge, the power value of the battery pack at the last jump here refers to the power value of the battery pack when it first jumps in the process of the battery pack going from a fully charged state to the end of discharge, that is, the power value at which the power jump begins to occur in the process of the battery pack going from a fully charged state to the end of discharge, so that the control steps of the present application are entered before the battery pack reaches the highest cut-off voltage in the single cell, that is, the control is intervened before the battery pack starts to jump in power, so that the battery pack can discharge stably until the end of discharge, maintain the normal operation of the battery pack, and improve the safety of the battery pack.

[0053] In some embodiments, the preset amplitude is 3-7%, and the preset number is 15-25 times. Specifically, the preset amplitude can be any one of 3%, 4%, 5%, 6%, 7%, or a range value between any two values. The preset number can be any one of 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, or a range value between any two values. Among them, the lower the preset amplitude and the fewer the preset number, the lighter the aging of the battery pack, and the higher the preset amplitude and the more the preset number, the heavier the aging of the battery pack. Therefore, the present application can set the preset amplitude and the preset number based on the usage time and usage of the battery pack to determine a more reasonable reference power value and improve the control effect of the present application on the discharge of the battery pack.

[0054] Step 202, based on the reference power value and the preset control amplitude, determine the power control threshold. In the embodiment of the present application, after the reference power value is determined, the preset control amplitude is set to set the power value before the battery pack reaches the reference power value at which discharge control starts. In this way, by setting the preset control amplitude, discharge control can be started before the battery pack approaches the reference power value, thereby avoiding power jumps in the battery pack, reducing the risk of degradation and shortened life of the battery pack, and increasing the service life of the battery. At the same time, the setting of the preset control amplitude can ensure that discharge control starts when the battery pack power approaches the reference power value, so as to stabilize the output power of the battery pack and adapt to application scenarios that require stable power supply. In addition, setting an appropriate preset control amplitude can maximize the use of the capacity of the battery pack. When the battery pack approaches the reference power value, discharge control is started, which can ensure that the energy reserve of the battery pack is exhausted, avoiding premature cessation of battery energy and resulting in waste.

[0055] In some embodiments, step 202 determines the power control threshold based on the reference power value and the preset control amplitude, including: determining the sum of the reference power value and the preset control amplitude as the power control threshold, wherein the preset control amplitude is 5-15%. Specifically, taking the sum of the reference power value and the preset control amplitude as the power control threshold can ensure the adaptability and stability of power control. When the power of the battery pack is close to the reference power value, discharge control is started to ensure that the power is stably output within an acceptable range. In addition, by combining the reference power value and the preset control amplitude to determine the power control threshold, higher energy management efficiency can be achieved without wasting electric energy. The battery pack can perform discharge control in time according to the set power control threshold to ensure stable output of power and improve the energy utilization rate of the battery pack. Specifically, the preset control amplitude can be any one of 5%, 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, 15%, or a range value between any two values. In this way, the preset control range is set at 5~15%, which provides a certain flexibility and adjustability so that it can be adjusted and optimized according to the needs of specific applications and the characteristics of the battery pack to adapt to different application scenarios.

[0056] Step 102, determine the predicted discharge time based on the average current and the power control threshold. In this way, the predicted discharge time of the remaining available power can be estimated through the average current and the power control threshold, so as to provide more accurate power information and more reasonable control of the battery pack. Secondly, the use time is reasonably arranged according to the available power of the battery pack to avoid the battery pack being exhausted and useless at critical moments, thereby maximizing the use of the energy of the battery pack and improving energy utilization efficiency. In addition, by predicting the discharge time to prepare for subsequent steps, it is possible to effectively avoid the power jump of the battery pack during use, avoid the battery pack from accidentally shutting down or stopping working, improve the stability of the battery pack, and ensure a reliable supply of power.

[0057] In some embodiments, the predicted discharge time is obtained by the following formula (1):

[0058]

[0059] Among them, T is the predicted discharge time, RC is the power control threshold, and A is the average current.

[0060] Step 103, determine the discharge rate based on the predicted discharge time and the power control threshold. In this way, according to the predicted discharge time and the set power control threshold, the discharge rate can be dynamically adjusted to match the time when the battery pack is used, so as to improve the accuracy of power control and ensure that the available power of the battery pack is exhausted within the expected time. Secondly, by reasonably controlling the discharge rate, the battery pack is prevented from working at a too fast or too slow discharge rate, the degradation of the battery pack and the capacity decay are slowed down, and the available energy of the battery pack is avoided from being wasted, thereby extending the life of the battery pack, optimizing the use of the battery pack, and improving the performance and stability of the battery pack. It should be noted that the discharge rate in step 103 is not the same as the average current in step 102. The average current in step 102 is the actual value measured, indicating the average discharge current of the battery pack within the preset time before the power control threshold is reached, while the discharge rate in step 103 is the discharge control parameter after the battery pack enters the discharge control, which is a calculated value used for specific discharge control. Although both are related to the power control threshold, they cannot be equivalent.

[0061] In some embodiments, the discharge rate is obtained based on the following formula (2):

[0062]

[0063] Among them, V is the discharge rate, T is the predicted discharge time, and RC is the power control threshold.

[0064] Step 104, based on the discharge rate, the battery pack is controlled to discharge until the remaining power is discharged. In this way, by controlling the discharge rate, it can be ensured that the power released by the battery pack per unit time is constant since the power control threshold, thereby improving the accuracy of power control, ensuring that the remaining power of the battery pack is uniformly consumed within the predicted discharge time, and improving the accuracy and reliability of power control. Secondly, by controlling the discharge rate, it is avoided that too high a discharge rate causes excessive power consumption and loss of the battery pack, accelerates capacity decay and shortens life, and avoids too low a discharge rate that may cause energy waste. By properly controlling the discharge rate, the battery pack can be operated within an acceptable discharge rate range, extending the life of the battery pack and improving the efficiency of the battery pack. At the same time, by controlling the discharge rate, the battery pack voltage is prevented from being too low or the current is too large, and the battery pack provides a stable power output, thereby avoiding failures and unexpected shutdowns of electrical equipment. In addition, a reasonable discharge rate can not only meet the power demand of electrical equipment, but also avoid excessive consumption of the battery pack power, thereby improving the power utilization efficiency of the battery pack, reducing power waste, saving power costs, and providing sustainable power supply for electrical equipment.

[0065] Compared with the prior art, the present application provides a battery pack discharge control method, including: when the remaining power of the battery pack reaches a preset power control threshold, obtaining the average current of the current discharge; determining the predicted discharge time based on the average current and the power control threshold; determining the discharge rate based on the predicted discharge time and the power control threshold; and controlling the discharge of the battery pack based on the discharge rate until the remaining power is discharged. In this way, the present application sets the power control threshold so that the discharge rate is determined when the remaining power of the battery pack reaches the power control threshold, and controls the battery pack to discharge smoothly through the discharge rate, avoiding power jumps caused by the increase in the voltage difference between the single cells of the battery pack, maintaining the normal operation of the battery pack, and improving the safety of the battery pack.

[0066] Accordingly, the present application also provides a battery pack discharge control device, see Figure 3 , Figure 3 The schematic diagram of the structure of the battery pack discharge control device provided in the embodiment of the present application is illustrated. The battery pack discharge control device includes a first acquisition module, a second acquisition module, a third acquisition module and a control module. The first acquisition module is configured to acquire the average current of the current discharge when the remaining power of the battery pack reaches a preset power control threshold; the second acquisition module is configured to determine the predicted discharge time based on the average current and the power control threshold; the third acquisition module is configured to determine the discharge rate based on the predicted discharge time and the power control threshold; the control module is configured to control the discharge of the battery pack based on the discharge rate until the remaining power is discharged.

[0067] It can be understood that, compared with the prior art, the battery pack discharge control device provided in the embodiment of the present application includes all the technical features and technical effects of the above-mentioned battery pack discharge control method, which will not be repeated here.

[0068] Accordingly, the present application also provides an electric device, including a memory, a processor, and a computer program stored in the memory and executable on the processor;

[0069] Wherein, when the processor executes the computer program, it can be used to execute the steps of the battery pack discharge control method as described in any one of the above embodiments.

[0070] In the embodiments of the present application, the electrical equipment may be a mobile phone, a portable device, a laptop computer, an electric toy, an electric tool, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical equipment.

[0071] It can be understood that, compared with the prior art, an electrical device provided in an embodiment of the present application includes all the technical features and technical effects of the above-mentioned battery pack discharge control method, which will not be repeated here.

[0072] Correspondingly, the present application also provides a computer-readable storage medium, which stores a computer program, and the computer program is used to enable a processor to implement the steps of the battery pack discharge control method as described in any one of the above embodiments when executed.

[0073] It can be understood that, compared with the prior art, the computer-readable storage medium provided in the embodiment of the present application includes all the technical features and technical effects of the above-mentioned battery pack discharge control method, which will not be repeated here.

[0074] The above is a detailed introduction to a battery pack discharge control method, device, electrical equipment and computer-readable storage medium provided in the embodiments of the present application. Specific examples are used in the present application to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack discharge control method, characterized in that: Used to control battery pack discharge, including: When the remaining power of the battery pack reaches a preset power control threshold, obtaining the current average discharge current; Determining a predicted discharge time based on the average current and the power control threshold; Determining a discharge rate based on the predicted discharge time and the power control threshold; Controlling the discharge of the battery pack based on the discharge rate until the remaining power is discharged; The power control threshold is preset based on the following steps: Determining a reference power value based on the historical jump power value of the battery pack; Determining the power control threshold based on the reference power value and the preset control range; Determining a reference power value based on the historical jump power value of the battery pack includes: Obtaining the jump amplitude of the power value of the battery pack when a jump occurs during the historical discharge process; When the jump amplitude is greater than or equal to a preset amplitude, accumulating the number of jumps of the battery pack; When the number of jumps is equal to the preset number of times, the power value of the battery pack at the last jump is stored as the reference power value; Determining the power control threshold based on the reference power value and the preset control range includes: The sum of the reference power value and the preset control range is determined as the power control threshold.

2. The battery pack discharge control method according to claim 1, characterized in that: The preset amplitude is 3-7%, and the preset number of times is 15-25 times.

3. The battery pack discharge control method according to claim 1, characterized in that: The preset control range is 5~15%.

4. The battery pack discharge control method according to claim 1, characterized in that: The predicted discharge time is obtained by the following formula: Wherein, T is the predicted discharge time, RC is the power control threshold, and A is the average current.

5. The battery pack discharge control method according to claim 1, characterized in that: The discharge rate is obtained based on the following formula: Among them, V is the discharge rate, T is the predicted discharge time, and RC is the power control threshold.

6. A battery pack discharge control device, characterized in that: include: A first acquisition module is configured to acquire an average current of current discharge when the remaining power of the battery pack reaches a preset power control threshold; A second acquisition module is configured to determine a predicted discharge time based on the average current and the power control threshold; A third acquisition module is configured to determine a discharge rate based on the predicted discharge time and the power control threshold; a control module, configured to control the discharge of the battery pack based on the discharge rate until the remaining power is discharged; The power control threshold is preset based on the following steps: Determining a reference power value based on the historical jump power value of the battery pack; Determining the power control threshold based on the reference power value and the preset control range; Determining a reference power value based on the historical jump power value of the battery pack includes: Obtaining the jump amplitude of the power value of the battery pack when a jump occurs during the historical discharge process; When the jump amplitude is greater than or equal to a preset amplitude, accumulating the number of jumps of the battery pack; When the number of jumps is equal to the preset number of times, the power value of the battery pack at the last jump is stored as the reference power value; Determining the power control threshold based on the reference power value and the preset control range includes: The sum of the reference power value and the preset control range is determined as the power control threshold.

7. An electrical equipment, characterized in that: comprising a memory, a processor, and a computer program stored in the memory and executable on the processor; Wherein, when the processor executes the computer program, it can be used to execute the steps of the battery pack discharge control method described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program is used to enable a processor to implement the steps of the battery pack discharge control method as described in any one of claims 1 to 5 when executed.

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