Methods, apparatus, and electrical equipment for managing the electrical energy of battery packs

Abstract

This application relates to the field of battery charging and discharging technology, and discloses a method for managing the electrical energy of a battery pack. This method is applied during the discharge process of a battery pack, and includes: selecting u individual cells in the battery pack, wherein the u individual cells are not exactly the same as the u individual cells selected during the previous discharge of the battery pack; and controlling the u individual cells to supply power to an electrical device; wherein the total power supply of the u individual cells is greater than or equal to the power consumption of the electrical device, u is a positive integer less than t, and t is the total number of individual cells in the battery pack. Using this method for managing the electrical energy of a battery pack can improve the service life of the battery pack. This application also discloses an apparatus and an electrical device for managing the electrical energy of a battery pack.

Description

Technical Field

[0001] This application relates to the field of battery charging and discharging technology, such as a method, apparatus, and electrical equipment for managing the electrical energy of a battery pack. Background Technology

[0002] Currently, most DC-powered home appliances do not have battery packs; they are simply traditional appliances with modified electrical components to adapt to DC power requirements. The few DC-powered appliances equipped with battery packs are primarily for portability after charging. Regarding peak and off-peak electricity pricing policies, such as lower electricity prices in off-peak areas and higher prices in peak areas, battery charging can be controlled in off-peak areas and discharging in peak areas, thus saving on electricity costs.

[0003] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0004] The lack of management over the battery pack's discharge process reduced its lifespan. Summary of the Invention

[0005] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0006] This disclosure provides a method, apparatus, and electrical equipment for managing the power of a battery pack, in order to solve the technical problem of low battery pack lifespan.

[0007] In some embodiments, the method for managing battery pack power is applied during the discharge process of the battery pack, the method comprising:

[0008] Select u individual cells in the battery pack, wherein the u individual cells are not exactly the same as the u individual cells selected during the previous discharge of the battery pack;

[0009] Control the u individual batteries to supply power to the electrical equipment;

[0010] Wherein, the total power supply of u individual batteries is greater than or equal to the power consumption of the electrical device, u is a positive integer less than t, and t is the total number of individual batteries in the battery pack.

[0011] In some embodiments, the means for managing the electrical energy of the battery pack is applied during the discharge process of the battery pack, the means comprising:

[0012] The selection module is configured to select u individual cells in the battery pack, wherein the u individual cells are not exactly the same as the u individual cells selected during the previous discharge of the battery pack.

[0013] The power supply module is configured to control the u individual batteries to supply power to the electrical equipment;

[0014] Wherein, the total power supply of u individual batteries is greater than or equal to the power consumption of the electrical device, u is a positive integer less than t, and t is the total number of individual batteries in the battery pack.

[0015] In some embodiments, the apparatus for managing battery pack power includes a processor and a memory storing program instructions, the processor being configured to execute the method for managing battery pack power provided in the foregoing embodiments when executing the program instructions.

[0016] In some embodiments, the electrical equipment includes the means for managing battery pack power provided in the foregoing embodiments.

[0017] The method, apparatus, and electrical equipment for managing battery pack power provided in this disclosure can achieve the following technical effects:

[0018] When a battery pack powers an electrical device multiple times, the selected individual cells are not exactly the same as those selected in the previous use. This reduces the number of times individual cells are used and improves the lifespan of the battery pack.

[0019] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0020] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements, and wherein:

[0021] Figure 1 This is a schematic diagram of a method for managing battery pack power according to an embodiment of this disclosure;

[0022] Figure 2 This is a schematic diagram of a method for managing battery pack power according to an embodiment of this disclosure;

[0023] Figure 3 This is a schematic diagram illustrating the selection of u individual cells in a battery pack according to an embodiment of this disclosure;

[0024] Figure 4 This is a schematic diagram illustrating the selection of u individual cells in a battery pack according to an embodiment of this disclosure;

[0025] Figure 5 This is a schematic diagram illustrating how to obtain the total power supply of u individual batteries according to an embodiment of this disclosure;

[0026] Figure 6 This is a schematic diagram of a device for managing the electrical energy of a battery pack, provided in an embodiment of this disclosure;

[0027] Figure 7 This is a schematic diagram of a device for managing the electrical energy of a battery pack, provided in an embodiment of this disclosure;

[0028] Figure 8 This is a schematic diagram of a device for managing the electrical energy of a battery pack, provided in an embodiment of this disclosure;

[0029] Figure 9 This is a schematic diagram of a device for managing the electrical energy of a battery pack, provided in an embodiment of this disclosure;

[0030] Figure 10 This is a schematic diagram of a device for managing the electrical energy of a battery pack, provided in an embodiment of this disclosure. Detailed Implementation

[0031] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0032] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0033] Unless otherwise stated, the term "multiple times" means two or more times, and the term "multiple" means two or more times.

[0034] In this embodiment of the disclosure, during the charging process, the battery pack is charged with an appropriate amount of power, rather than being fully charged, to achieve shallow charge protection for the battery pack and improve the battery pack's lifespan; during the discharging process, some individual cells are selected to discharge, reducing the frequency of use of individual cells and improving the battery pack's lifespan.

[0035] In this embodiment of the disclosure, the electrical equipment can be a household appliance, such as a television, air conditioner, speaker, etc., or it can be a non-household appliance; the electrical equipment can be a DC power supply device or an AC power supply device.

[0036] Combination Figure 1 As shown, this disclosure provides a method for managing the electrical energy of a battery pack, which is applied during the charging process of the battery pack. The method for managing the electrical energy of a battery pack includes:

[0037] S101. Obtain the historical power consumption of electrical equipment.

[0038] The electrical device can be powered by the power grid or by a battery pack. When the device is powered by the power grid, the battery pack is charged to ensure that the battery pack provides sufficient power to the device when it is powered by the battery pack. In this embodiment, the battery pack refers to a rechargeable battery pack. In the above steps, the historical power consumption of the device refers to the historical power consumption of the device when it is powered by the battery pack. For example, when the device is powered by the battery pack during peak power consumption periods, the historical power consumption of the device is the power consumption of the device during those peak power consumption periods in the past.

[0039] S102. Determine the amount of charge to be applied to the battery pack during this charge based on historical power consumption.

[0040] Prior to charging the battery pack, we obtained several historical power consumption records for the electrical equipment. For example, we recorded the daily power requirements of the equipment from the battery pack for a set number of days, which could be 2, 3, 4, 5, 6, 7, or more.

[0041] After this charge, the battery pack can supply power to the device whenever it requires it. The amount of power charged in this charge is related to the historical power consumption of the device; that is, the amount of power charged in this charge is related to the amount of power the battery pack has supplied to the device in the past. This ensures that the amount of power charged in this charge is matched to the amount of power the battery pack supplied to the device most recently, guaranteeing that the battery pack can function normally for the device. It also achieves shallow charging of the battery pack, avoiding overcharging and improving the battery pack's lifespan.

[0042] In some embodiments, the amount of charge to be applied to the battery pack during this charge is determined based on the average historical power consumption of the electrical device; the higher the average historical power consumption of the electrical device, the greater the amount of charge applied to the battery pack during this charge. In this way, the amount of charge applied to the battery pack during this charge can be determined based on the historical power consumption of the electrical device.

[0043] Alternatively, the average historical power consumption of the electrical equipment can be multiplied by a coefficient greater than 1 to obtain the amount of power to be charged by the battery pack in this charge. In this way, the electrical energy stored in the battery pack can offset the electrical energy lost by the battery pack, enabling the battery pack to provide sufficient power to the electrical equipment.

[0044] Optionally, the charge amount of the battery pack for this charge is determined based on the average historical power consumption of the electrical equipment, including:

[0045]

[0046] Among them, a r-1 This is the amount of charge the battery pack received this time. A is the historical average electricity consumption of electrical equipment. r It is a correction factor. In this way, the amount of charge required for the battery pack during this charge can be accurately determined based on the historical power consumption of the electrical equipment, and the battery pack can provide sufficient power to the electrical equipment.

[0047] Optionally, the correction factor A can be determined as follows: r :

[0048]

[0049] in, x is the historical average power consumption of electrical equipment. i Let m be the power consumption of the device during the r-th charge / discharge cycle in the i-th charge / discharge cycle. r This represents the total number of charge / discharge cycles. One charge / discharge cycle includes multiple charge / discharge processes of the battery pack.

[0050] When obtaining the historical power consumption of electrical equipment, the number of times the historical power consumption of electrical equipment is obtained is greater than or equal to the number of battery pack charge and discharge processes included in one charge and discharge cycle.

[0051] A charge-discharge cycle can include 2, 3, 4, 5, 6, 7 or more charge-discharge cycles of the battery pack. In a day, the battery pack can be charged and discharged 1, 2, 3 or more times. If the battery pack is charged and discharged once a day, a charge-discharge cycle can last 2, 3, 4, 5, 6, 7 or more days.

[0052] When a charge-discharge cycle includes two charge-discharge processes of the battery pack, r is 1 or 2; when a charge-discharge cycle includes three charge-discharge processes of the battery pack, r is 1, 2, or 3; and so on, when a charge-discharge cycle includes seven charge-discharge processes of the battery pack, r is 1, 2, 3, 4, 5, 6, or 7.

[0053] In a charge-discharge cycle consisting of three charge-discharge processes, when nine historical power consumption records of the electrical equipment have been obtained... The average of 9 historical electricity consumption data points, where r is 1, 2, or 3, and m r The value is 3; in the case that a charge-discharge cycle includes 7 charge-discharge processes, when 14 historical power consumption data of the electrical equipment have been obtained, The average of 14 historical electricity consumption data points, where r is 1, 2, 3, 4, 5, 6, or 7, and m... r The value is 2.

[0054] The following section will use a more specific application scenario to illustrate the determination of the correction factor A. r This explanation will be provided in a manner that clarifies the determination of the correction coefficient A. This application scenario is only used to explain the above determination of the correction coefficient A. r The method described does not constitute a limitation on the individual parameters. In this application scenario, a charge-discharge cycle consists of 7 charge-discharge processes. When 14 historical power consumption data of the electrical equipment have been obtained, The average of 14 historical electricity consumption data for the electrical equipment, r = 1, m r =2,x 1,1 For the first historical electricity consumption of the power-consuming facility, x 2,1 The 8th historical electricity consumption of the electrical equipment is used to calculate A1; when 15 historical electricity consumption records of the electrical equipment have been obtained... The average of 14 historical electricity consumption data for the electrical equipment, or... The average of 15 historical electricity consumption data for the electrical equipment, r = 2, m r =2,x 1,2 This is the second historical electricity consumption figure for the electricity consumption facility, x 2,2 The 9th historical electricity consumption of the electrical equipment is used to calculate A2; and so on, until 20 historical electricity consumption records of the electrical equipment have been obtained. The average of 14 historical electricity consumption data for the electrical equipment, or... The average of 20 historical electricity consumption data for the electrical equipment, r = 7, m r =2,x 1,7 This is the 7th historical electricity consumption figure for the electricity consumption facility, x 2,7 A7 is calculated based on the 14th historical electricity consumption of the electrical equipment.

[0055] In the above application scenario, the charging amounts a0, a1, a2, a3, a4, a5, and a6 of the battery pack in this charge can be further calculated. Therefore, in one charge-discharge cycle, the battery pack's first charge is a0, after which it powers the device; the second charge is a1, after which it powers the device; the third charge is a2, after which it powers the device; the fourth charge is a3, after which it powers the device; the fifth charge is a4, after which it powers the device; the sixth charge is a5, after which it powers the device; and the seventh charge is a6, after which it powers the device.

[0056] S103. Charge the battery pack according to the determined charge amount.

[0057] In the above embodiments, the battery pack is charged with an appropriate amount of power each time, which ensures that the battery pack can supply power to the electrical equipment normally, and avoids overcharging of the battery pack, thereby improving the service life of the battery pack.

[0058] Combination Figure 2 As shown, the method for managing battery pack power provided in this embodiment is applied to the discharge process of the battery pack. The method for managing battery pack power includes:

[0059] S201. Select u individual cells in the battery pack. The u individual cells are not exactly the same as the u individual cells selected during the previous discharge of the battery pack.

[0060] Where the total power supply of u individual batteries is greater than or equal to the power consumption of the electrical equipment, u is a positive integer less than t, and t is the total number of individual batteries in the battery pack.

[0061] A battery pack consists of multiple individual cells, where the *u* individual cells selected during the previous discharge of the battery pack are not entirely the same as the *u* individual cells selected during the previous discharge. This includes situations where the *u* individual cells selected this time are completely different from the *u* individual cells selected during the previous discharge, and situations where the *u* individual cells selected this time are partially the same as the *u* individual cells selected during the previous discharge. For example, a battery pack may contain 7 individual cells, labeled 1#, 2#, 3#, 4#, 5#, 6#, and 7#. During the previous discharge, cells 1#, 2#, and 3# were selected. During the current discharge, cells 4#, 5#, and 6# can be selected, or cells 2#, 3#, and 4# can be selected.

[0062] S202, Control u individual batteries to supply power to electrical equipment.

[0063] When a battery pack powers an electrical device multiple times, the selected individual cells are not exactly the same as those selected in the previous use. This reduces the number of times individual cells are used and improves the lifespan of the battery pack.

[0064] Combination Figure 3 As shown, select u individual cells in the battery pack, including:

[0065] S301. Determine the current number of times the battery pack supplies power to the electrical equipment.

[0066] In this embodiment, the electrical equipment can be powered by either the mains grid or a battery pack. Each switch from mains power to battery power and back to mains power is recorded as one instance of the battery pack supplying power to the equipment. After the equipment is installed, the number of times the battery pack supplies power to the equipment is recorded; alternatively, after resetting the count to zero, the count is reset and then restarted.

[0067] S302. Select u individual batteries to power the electrical equipment based on the current number of times.

[0068] When the number of times the battery pack powers the device is different, the number of individual cells selected will also be different, thus allowing the selection of the number of individual cells in the battery pack.

[0069] In some embodiments, selecting u individual batteries to power the device based on the current number of times includes:

[0070] When p+u-1≤t, select the first to the p+u-1th individual cells;

[0071] When p+u-1>t and p≤t, select cell blocks p to t and cell blocks 1 to (p+u-1)%t.

[0072] When p+u-1>t, p>t and (p%t+u-1)≤t, select the individual cells from the p%t to the p%t+u-1th cell blocks;

[0073] When p+u-1>t, p>t and (p%t+u-1)>, select cell blocks p%t to t and cell blocks 1 to (p%t+u-1)%t.

[0074] Where p is the current count.

[0075] Combination Figure 4 As shown, select u individual cells in the battery pack, including:

[0076] S401. Obtain the total power supply of u-1 individual cells, denoted as the first total power supply;

[0077] S402. Obtain the total power supply of u individual cells, denoted as the second total power supply;

[0078] The order of S401 and S402 can be interchanged.

[0079] S403. When the first total power supply is less than the power consumption of the electrical equipment, and the second total power supply is greater than or equal to the power consumption of the electrical equipment, determine to select u individual batteries.

[0080] This ensures that the selected u individual cells can provide sufficient power to the electrical device, and that the u individual cells represent the minimum required number.

[0081] Combination Figure 5 As shown, the total power supply of u individual cells is obtained, including:

[0082] S501, Obtain the maximum storage capacity of each individual battery cell;

[0083] S502. Calculate the product of the maximum storage capacity and the set release ratio to obtain the power supply of each individual battery cell.

[0084] Optionally, the set release ratio can be less than the maximum release ratio; whereby the maximum release ratio is the ratio of the maximum amount of electricity that the battery pack can release to the total storage capacity of the battery pack. Discharging the battery pack at the set release ratio enables shallow discharge of the battery pack, effectively protecting the battery pack and improving its lifespan.

[0085] S503. Calculate the sum of the power supply of u individual cells to obtain the total power supply of u individual cells.

[0086] The total power supply of u individual batteries can be obtained by following the above method. When the battery pack supplies power to the electrical equipment, the u individual batteries are in a shallow discharge state, which effectively protects the battery pack and improves the service life of the battery pack.

[0087] The method for managing battery pack power provided in this disclosure can be applied to both the charging and discharging processes of the battery pack. Furthermore, it charges the battery pack according to a predetermined amount during off-peak electricity consumption periods and controls u individual batteries to supply power to electrical devices during peak electricity consumption periods. In the entire power grid, the total load of electrical devices operating during off-peak periods is smaller, while the total load of electrical devices operating during peak periods is larger, which can easily cause grid instability. Currently, some power supply policies increase the electricity price during peak periods and decrease it during off-peak periods to encourage users to turn off unnecessary electrical devices during peak periods and improve the stability of the power grid. Using lower-rate electricity to power the battery pack during off-peak periods and using the battery pack to power electrical devices during off-peak periods can save users money.

[0088] Combination Figure 6 As shown, this disclosure provides an apparatus for managing the electrical energy of a battery pack. This apparatus is applied during the charging process of the battery pack. The apparatus includes:

[0089] Module 61 is configured to obtain the historical power consumption of electrical equipment.

[0090] The determination module 62 is configured to determine the amount of charge to be applied to the battery pack during this charge based on historical power consumption.

[0091] The charging module 63 is configured to charge the battery pack to a predetermined amount.

[0092] Optionally, the determining module is specifically configured to determine the charging amount of the battery pack for this charge based on the average historical power consumption of the electrical equipment; the higher the average historical power consumption of the electrical equipment, the higher the charging amount of the battery pack for this charge.

[0093] Optionally, the charge amount of the battery pack for this charge is determined based on the average historical power consumption of the electrical equipment, including:

[0094]

[0095] Among them, a r-1 This is the amount of charge the battery pack received this time. A is the historical average electricity consumption of electrical equipment. r It is a correction factor.

[0096] Optionally, the correction factor A can be determined as follows: r :

[0097]

[0098] in, x is the historical average power consumption of electrical equipment. i Let m be the power consumption of the device during the r-th charge / discharge cycle in the i-th charge / discharge cycle. r This represents the total number of charge / discharge cycles. One charge / discharge cycle includes multiple charge / discharge processes of the battery pack.

[0099] Optionally, the charging module 63 is specifically configured to charge the battery pack at a predetermined amount during off-peak electricity usage periods.

[0100] Combination Figure 7 As shown, this disclosure provides an apparatus for managing the electrical energy of a battery pack. This apparatus is applied during the discharge process of the battery pack. The apparatus includes:

[0101] Select module 71 is configured to select u individual cells in the battery pack, and the u individual cells are not exactly the same as the u individual cells selected during the previous discharge of the battery pack.

[0102] Power supply module 72 is configured to control u individual batteries to supply power to electrical devices;

[0103] Where the total power supply of u individual batteries is greater than or equal to the power consumption of the electrical equipment, u is a positive integer less than t, and t is the total number of individual batteries in the battery pack.

[0104] Combination Figure 8 As shown, the selection module 71 includes:

[0105] The first determining unit 81 is configured to determine the current number of times the battery pack supplies power to the electrical device;

[0106] Selection unit 82 is configured to select u individual batteries to power the device based on the current number of times.

[0107] Optionally, selection unit 82 is specifically configured as follows:

[0108] When p+u-1≤t, select the first to the p+u-1th individual cells;

[0109] When p+u-1>t and p≤t, select cell blocks p to t and cell blocks 1 to (p+u-1)%t.

[0110] When p+u-1>t, p>t and (p%t+u-1)≤t, select the individual cells from the p%t to the p%t+u-1th cell blocks;

[0111] When p+u-1>t, p>t and (p%t+u-1)>t, select cell blocks p%t to t and cell blocks 1 to (p%t+u-1)%t.

[0112] Where p is the current count.

[0113] Combination Figure 9 As shown, the selection module 71 includes:

[0114] The first obtaining unit 91 is configured to obtain the total power supply of u-1 individual batteries, denoted as the first total power supply.

[0115] The second obtaining unit 92 is configured to obtain the total power supply of u individual cells, denoted as the second total power supply.

[0116] The second determining unit 93 is configured to determine the selection of u individual batteries when the first total power is less than the power consumption of the power-consuming device and the second total power supply is greater than or equal to the power consumption of the power-consuming device.

[0117] Optionally, the obtaining unit (first obtaining unit 91 or second obtaining unit 92) is specifically configured to: obtain the maximum storage capacity of each individual battery, calculate the product of the maximum storage capacity and the set release ratio, obtain the power supply of each individual battery, calculate the sum of the power supply of u individual batteries, and obtain the total power supply of u individual batteries.

[0118] Optionally, the power supply module 72 is specifically configured to control u individual batteries to supply power to the electrical equipment during peak power consumption periods.

[0119] In some embodiments, the apparatus for managing battery pack power includes a processor and a memory storing program instructions, the processor being configured to execute the method for managing battery pack power provided in the foregoing embodiments when executing the program instructions.

[0120] In the embodiments of this disclosure, unless otherwise specified, the method for managing the battery pack's electrical energy is applied to the battery pack's charging process, or the method for managing the battery pack's electrical energy is applied to the battery pack's discharging process, or the method for managing the battery pack's electrical energy can be applied to both the charging and discharging processes. Correspondingly, the device for managing the battery pack's electrical energy is applied to the battery pack's charging process, or the device for managing the battery pack's electrical energy is applied to the battery pack's discharging process, or the device for managing the battery pack's electrical energy can be applied to both the charging and discharging processes.

[0121] Combination Figure 10 As shown in the figure, an embodiment of this disclosure provides an apparatus for managing the power of a battery pack, comprising:

[0122] The processor 101 and memory 102 may further include a communication interface 103 and a bus 104. The processor 101, communication interface 103, and memory 102 can communicate with each other via the bus 104. The communication interface 103 can be used for information transmission. The processor 101 can invoke logical instructions stored in the memory 102 to execute the method for managing battery pack power provided in the foregoing embodiments.

[0123] Furthermore, the logical instructions in the aforementioned memory 102 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0124] The memory 102, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 101 executes functional applications and data processing by running the software programs, instructions, and modules stored in the memory 102, thereby implementing the methods in the above-described method embodiments.

[0125] The memory 102 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 102 may include high-speed random access memory and may also include non-volatile memory.

[0126] This disclosure provides an electrical device that includes the means for managing battery pack power provided in the foregoing embodiments.

[0127] This disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the method for managing battery pack power provided in the foregoing embodiments.

[0128] This disclosure provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions that, when executed by a computer, cause the computer to perform the method for managing battery pack power provided in the foregoing embodiments.

[0129] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0130] The technical solutions of this disclosure can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes one or more instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods in this disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: USB flash drive, portable hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, and other media capable of storing program code; it can also be a transient storage medium.

[0131] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes the element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0132] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0133] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical, or other forms. Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0134] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for managing the electrical energy of a battery pack, applied during the discharge process of the battery pack, characterized in that, include: Determine the current number of times the battery pack powers the device. p express; Based on the current number of discharges, select u individual batteries to power the electrical equipment. The u individual batteries are not exactly the same as the u individual batteries selected during the previous discharge of the battery pack. include: exist ,and When, select the first p block to t Single cell, and the first to the second Block single cell battery; exist , and When, select the first Block to the first Block single cell battery; exist , and When, select the first Block to the first t One single cell, and one to the next Block single cell battery; Control the u individual batteries to supply power to the electrical equipment; Wherein, the total power supply of u individual batteries is greater than or equal to the power consumption of the electrical device, u is a positive integer less than t, and t is the total number of individual batteries in the battery pack.

2. The method according to claim 1, characterized in that, Select u individual cells from the battery pack, including: The total power supply of u-1 individual cells is obtained and denoted as the first total power supply. The total power supply of u individual cells is obtained and denoted as the second total power supply. When the first total power supply is less than the power consumption of the electrical device, and the second total power supply is greater than or equal to the power consumption of the electrical device, u individual batteries are selected.

3. The method according to claim 2, characterized in that, To obtain the total power supply of u individual cells, including: To obtain the maximum energy storage capacity of each individual battery cell; Calculate the product of the maximum storage capacity and the set release ratio to obtain the power supply of each individual battery cell; Calculate the sum of the power supplied by u individual cells to obtain the total power supplied by u individual cells.

4. The method according to any one of claims 1 to 3, characterized in that, During peak power consumption periods, control u individual batteries to supply power to electrical equipment.

5. A device for managing the electrical energy of a battery pack, applied during the discharge process of the battery pack, characterized in that, include: The selection module is configured to select u individual cells in the battery pack, where the u individual cells are not exactly the same as the u individual cells selected during the previous discharge of the battery pack; the selection module includes: The first determining unit is configured to determine the current number of times the battery pack supplies power to the electrical device, using p express; The selection unit is configured to select u individual batteries to power the electrical device based on the current number of times, including: exist ,and When, select the first p block to t Single cell, and the first to the second Block single cell battery; exist , and When, select the first Block to the first Block single cell battery; exist , and When, select the first Block to the first t One single cell, and one to the next Block single cell battery; The power supply module is configured to control the u individual batteries to supply power to the electrical equipment; Wherein, the total power supply of u individual batteries is greater than or equal to the power consumption of the electrical device, u is a positive integer less than t, and t is the total number of individual batteries in the battery pack.

6. The apparatus according to claim 5, characterized in that, The power supply module controls u individual batteries to supply power to the electrical equipment during peak power consumption periods.

7. A device for managing the electrical energy of a battery pack, comprising a processor and a memory storing program instructions, characterized in that, The processor is configured to, when executing the program instructions, perform the method for managing battery pack power as described in any one of claims 1 to 4.

8. An electrical appliance, characterized in that, Includes the device for managing battery pack power as described in claim 5 or 6.

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