Capacity balancing control method, system and terminal device of mobile power supply device

Abstract

The application relates to the field of capacity equalization control, in particular to a capacity equalization control method, system and terminal equipment of a mobile power supply device, which method comprises the following steps: acquiring the battery pack capacity of N battery packs respectively; judging whether the battery pack capacity of the N battery packs is equal; if the battery pack capacity of the N battery packs is equal, performing intra-group battery capacity equalization; and if the battery pack capacity of the N battery packs is not equal, performing inter-battery pack capacity equalization. According to the application, the capacity between battery packs and the capacity between batteries in the battery packs are adjusted and equalized when the batteries are not in use, so that the charging and discharging degrees of the battery packs and the batteries in the battery packs in the mobile power supply device are kept consistent, and the service life of the mobile power supply device is improved.

Description

Technical Field

[0001] The present application relates to the field of capacity balancing control, and in particular to a capacity balancing control method, system, and terminal device for a mobile power supply device. Background Art

[0002] After several single cells are combined into a battery pack, there will be differences in the voltage, internal resistance and capacity of the single cells. After long-term use, the capacity and internal resistance of the single cells will be different due to the different degrees of charge and discharge of the single cells.

[0003] When a mobile power supply device is equipped with multiple battery packs, since the individual cells within a battery pack may have different capacities, there may also be differences between the multiple battery packs, resulting in uneven capacities provided by different battery packs of the mobile power supply device. Summary of the Invention

[0004] In order to extend the service life of a battery, the present application provides a capacity balancing control method, system and terminal device of a mobile power supply device.

[0005] The present application provides a capacity balancing control method, system, and terminal device for a mobile power supply device, which adopt the following technical solutions:

[0006] A power balancing control method for a mobile power supply device, comprising:

[0007] A method for applying to a mobile power supply device, wherein the mobile power supply device has N battery packs, each battery pack is composed of M single cells, where N and M are positive integers greater than 1, comprising:

[0008] Obtaining the battery pack capacities of the N battery packs respectively;

[0009] Determining whether the battery pack capacities of the N battery packs are equal;

[0010] If the battery pack capacities of the N battery packs are equal, performing battery capacity balancing within the pack;

[0011] If the battery pack capacities of the N battery packs are not equal, power balancing is performed between the battery packs.

[0012] By adopting the above technical solution, in order to extend the service life of the battery in the mobile device and make the charge and discharge amounts of batteries in different groups and batteries within the group as consistent as possible, it is necessary to balance the batteries within the group and between components, and obtain the capacity of each battery group separately. If the battery capacity of each battery group is the same, there is no need to balance the battery capacity between groups, only the capacity within the group needs to be balanced. If the capacity between groups is different, then the different battery groups are also balanced. After balancing the capacity within the group and the components, the different battery capacities during charge and discharge are reduced, resulting in different battery charge and discharge degrees, thereby extending the battery life.

[0013] Optionally, the obtaining of the battery pack capacities of the N battery packs respectively includes:

[0014] Determine whether there is current between the M cells in a single battery pack;

[0015] If there is current between the M single cells, wait for the battery pack to stop working;

[0016] If there is no current between the M single battery cells, the battery pack capacity is obtained.

[0017] By adopting the above technical solution, whether there is current between the battery packs is obtained to determine whether the battery pack is currently in a working state. If it is in a working state, capacity balancing processing is not performed. If it is not in a working state, power balancing processing is performed.

[0018] Optionally, before performing intra-group battery capacity balancing, the method includes:

[0019] Get the battery health status of M batteries;

[0020] Based on the battery health status, determining whether the battery capacity of the M batteries has changed;

[0021] If the battery capacity changes, obtain the target battery quantity X and the maximum capacity of the target battery;

[0022] Based on the maximum capacity of the target battery, adjusting the target battery to the maximum capacity of the target battery;

[0023] If the battery capacity does not change, the real-time power of the M batteries is adjusted to the average power.

[0024] By adopting the technical scheme, whether the capacity of the battery changes is judged according to the health state of the battery, whether the capacity of the battery changes is mainly judged by detecting whether the internal resistance of the battery changes, the capacity of the battery decreases when the internal resistance increases, when the capacity of the battery changes, the number of target batteries whose capacity changes and the maximum capacity of the target batteries are obtained, the electric quantity of the target batteries is adjusted to the maximum capacity, if the capacity of the battery does not change, the real-time electric quantity of M batteries is adjusted to the average electric quantity, the electric quantity of the batteries in the group is balanced, the electric quantity of the battery whose capacity changes is fully charged to avoid the capacity difference between the battery whose capacity changes and other batteries during charging and discharging.

[0025] Optionally, the balancing of the electric quantity of the batteries in the group comprises:

[0026] The real-time electric quantity of M-X batteries in a single battery group is obtained respectively;

[0027] The average electric quantity of the M-X batteries is calculated based on the real-time electric quantity of the M-X batteries;

[0028] The real-time electric quantity of the M-X batteries is adjusted to the average electric quantity based on the real-time electric quantity and the average electric quantity to balance the electric quantity of the batteries in the group.

[0029] By adopting the technical scheme, before the balancing of the electric quantity in the group is performed, the battery whose capacity changes is fully charged, and when the balancing of the electric quantity is performed, the battery whose capacity changes is not considered, therefore, when the M-X batteries are obtained, the real-time electric quantity of the M-X batteries is obtained, the average electric quantity of the M-X batteries is calculated based on the real-time electric quantity of the M-X batteries, and then the real-time electric quantity of the M-X batteries is adjusted to the average electric quantity, the battery whose capacity does not change is adjusted to have the same electric quantity, so that the charging and discharging degrees of the M-X batteries are consistent as much as possible during charging and discharging.

[0030] Optionally, the balancing of the capacity between the battery groups comprises:

[0031] The average value of the battery group capacities of the N battery groups is obtained based on the battery group capacities of the N battery groups;

[0032] The electric quantity difference value between each battery group and the average value is obtained based on the N battery group capacities and the average value of the N battery group capacities;

[0033] The balancing of the electric quantity between the battery groups is performed based on the electric quantity difference value and the N battery group capacities.

[0034] By adopting the above technical solution, the total capacity of N battery packs is calculated based on the capacity of each battery pack, and then the average capacity of the N battery packs is calculated. Based on the difference between the capacity of a battery pack and the average capacity, the battery capacity of each battery pack is adjusted to the average capacity, so that the capacity of each battery pack remains consistent. When the mobile device is in use, the charge and discharge level of each battery pack can be kept as consistent as possible, thereby extending the service life of the battery pack in the mobile device.

[0035] Optionally, obtaining the health status of the M batteries in each battery pack;

[0036] When the battery health state changes, obtaining the number Y of capacity-changed batteries indicating a battery capacity change and the maximum capacity of the capacity-changed batteries;

[0037] Based on the maximum capacity, the capacity is adjusted to change the charge of the battery to the maximum capacity.

[0038] By adopting the above technical solution, each battery pack contains M batteries. Based on the battery health status of the M batteries, it is determined whether the battery capacity of the M batteries has changed. If the battery capacity has changed, the number Y of batteries with changed battery capacity and the battery capacity after the change are obtained, and then the batteries with changed battery capacity are charged to the maximum capacity to reduce the capacity gap with the normal batteries.

[0039] Optionally, obtain the real-time power of MY batteries in each battery pack;

[0040] Based on the real-time power of the MY battery, obtain the average power of the MY battery;

[0041] Calculate the difference between the real-time power and the average power of each battery pack;

[0042] Based on the power difference, the real-time power of each battery pack is adjusted to the average power.

[0043] By adopting the above technical solution, after the capacity of a battery in a battery pack changes, the battery with the changed battery capacity is not taken into account when calculating the average power in the battery pack. Therefore, each battery pack has MY normal batteries, and the average power of MY batteries in each battery pack of N battery packs is calculated. Then, based on the difference between the average power and the power of each battery pack, the power of each battery pack is adjusted to the average power, and the power between the battery packs is balanced, so that the batteries in the battery packs maintain the same charge and discharge level, thereby improving the service life.

[0044] In a second aspect, the present application provides a capacity balancing control system for a mobile power supply device, comprising:

[0045] an acquisition module, configured to respectively acquire the battery pack capacities of the N battery packs;

[0046] A judging module, configured to judge whether the battery pack capacities of the N battery packs are equal;

[0047] A first execution module is configured to perform battery power balancing within the group if the battery group capacities of the N battery groups are equal;

[0048] The second execution module is configured to perform power balancing between the battery packs if the battery pack capacities of the N battery packs are not equal.

[0049] By adopting the above technical solution, after the acquisition module obtains the battery pack capacities of N battery packs, the judgment module determines whether the capacities of the battery packs are equal. When the battery pack capacities are equal, the first execution module adjusts the battery power within the group to keep the power of the batteries in the group balanced. When the capacities between the battery packs are unequal, the second execution module balances the power between the battery packs to keep the power between the battery packs in the mobile device balanced, and the batteries in the group also keep the power balanced, thereby extending the battery life.

[0050] In a third aspect, the present application provides a terminal device that adopts the following technical solution:

[0051] A terminal device includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor. When the processor loads and executes the computer program, the above-mentioned capacity balancing control method of a mobile power supply device is adopted.

[0052] By adopting the above technical solution, the capacity balancing control method of the above-mentioned mobile power device is generated into a computer program and stored in a memory so as to be loaded and executed by a processor. Thus, a terminal device is manufactured based on the memory and the processor for easy use.

[0053] In summary, this application has the following beneficial technical effects:

[0054] In order to extend the service life of batteries in mobile devices and keep the charge and discharge amounts of batteries in different groups and within the group as consistent as possible, it is necessary to balance the batteries within the group and between components, and obtain the capacity of each battery group separately. If the battery capacity of each battery group is the same, there is no need to balance the battery capacity between groups, only the capacity within the group is required. If the capacity between groups is different, then balance the battery capacity between different battery groups. After balancing the capacity within the group and the components, the different battery capacities during charge and discharge, which leads to different charge and discharge levels of the batteries, are reduced, thereby extending the battery service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a method flow chart of a capacity balancing control method for a mobile power supply device according to an embodiment of the present application;

[0056] Figure 2 This is a flow chart of a method before respectively obtaining the battery pack capacities of N battery packs according to an embodiment of the present application;

[0057] Figure 3 This is a flow chart of the method before performing battery power balancing within a group according to an embodiment of the present application;

[0058] Figure 4 This is a flow chart of a method for performing battery charge balancing within a group according to an embodiment of the present application;

[0059] Figure 5 This is a flow chart of a method for performing capacity balancing between battery packs according to an embodiment of the present application;

[0060] Figure 6 This is a flow chart of a method for performing charge balancing between battery packs based on the charge difference and the capacities of N battery packs according to an embodiment of the present application;

[0061] Figure 7 This is a flow chart of a method for performing power balancing between battery packs according to an embodiment of the present application;

[0062] Figure 8 This is a system block diagram of a capacity balancing control system for a mobile power supply device according to an embodiment of the present application;

[0063] Description of reference numerals:

[0064] 1. Acquisition module; 2. Judgment module; 3. First execution module; 4. Second execution module. DETAILED DESCRIPTION

[0065] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0066] The present application discloses a capacity balancing control method for a mobile power supply device, referring to Figure 1 , applied to a mobile power supply device, the mobile power supply device has N battery packs, each battery pack is composed of M single cells, N and M are positive integers greater than 1 including:

[0067] S100: Obtain the battery capacity of each of N battery packs.

[0068] Specifically, the battery pack capacity refers to the maximum amount of electricity that the battery pack can hold. For example, the battery capacity of a certain battery pack is 3500 mA / h.

[0069] S110: Determine whether the battery pack capacities of the N battery packs are equal.

[0070] Specifically, whether it is necessary to perform power balancing between battery packs or power balancing within a battery pack is determined based on whether the capacities of the battery packs are equal. Since the batteries in the battery packs are all produced by the same manufacturer, have unified specifications and the same capacity, the internal resistance of the batteries is also the same. By detecting the internal resistance of the batteries, it can be determined whether the capacities of the batteries are equal. When the capacities of the battery packs are equal, step S120 is executed; when the capacities of the battery packs are unequal, step S130 is executed.

[0071] S120: If the battery pack capacities of the N battery packs are equal, perform battery power balancing within the pack.

[0072] Specifically, if the battery pack capacities of all battery packs are equal, there is no need to perform power balancing between the battery packs, and power balancing can be performed on the M batteries in a single battery pack.

[0073] S130: If the battery capacities of the N battery packs are not equal, then charge balancing is performed between the battery packs.

[0074] The implementation principle of a capacity balancing control method for a mobile power supply device in an embodiment of the present application is as follows: in order to extend the service life of the battery in the mobile device and make the charge and discharge amounts of batteries in different groups and batteries in the group as consistent as possible, it is necessary to balance the batteries in the group and between components, and obtain the capacity of each group of batteries separately. If the battery capacity of each group of batteries is the same, there is no need to balance the battery capacity between groups, only the capacity within the group needs to be balanced. If the capacity between groups is different, then the different battery groups are also balanced. After the capacity within the group and the components is balanced, the different battery capacities during charge and discharge are reduced, resulting in different charge and discharge degrees of the batteries, thereby extending the service life of the batteries.

[0075] Reference Figure 2 , respectively obtaining the battery pack capacities of N battery packs includes;

[0076] S200 , detecting whether there is current between the M single battery cells in a single battery pack.

[0077] Specifically, whether the battery is balanced within a battery pack or between battery packs, it needs to be done when the battery is not in a charging or discharging state. Whether the battery pack is in a working state is determined by detecting whether there is current between the batteries. When there is current, step S210 is executed; when there is no current, step S220 is executed.

[0078] S210: If there is current between the M single battery cells, wait for the battery pack to stop working.

[0079] S220: If there is no current between the M battery cells, obtain the battery pack capacity.

[0080] The implementation principle of the embodiment of the present application before obtaining the battery pack capacity of N battery packs respectively is: obtaining whether there is current between the battery packs to determine whether the battery pack is currently in a working state. If it is in a working state, capacity balancing processing is not performed. If it is not in a working state, power balancing processing is performed.

[0081] Reference Figure 3 Before performing battery balancing within a group, the following steps are required:

[0082] S300: Obtain the battery health status of M batteries.

[0083] Specifically, the battery health status is an indicator for detecting whether the battery capacity has changed, usually by detecting the internal resistance of the battery.

[0084] S310: Based on the battery health status, determine whether the battery capacity of the M batteries has changed.

[0085] Specifically, compare the internal resistance of the battery when it leaves the factory with the current internal resistance of the battery. If the internal resistance of the battery is different, it means that the capacity of the battery has changed.

[0086] S320: If the battery capacity changes, obtain the target battery quantity X and the maximum capacity of the target battery whose battery capacity changes.

[0087] Specifically, the number of batteries with changed battery capacity is obtained. In order to exclude the batteries with changed battery capacity when performing electric balancing between batteries in the group later, the target batteries are the batteries with changed battery capacity, and the maximum capacity of the target batteries is the maximum amount of electricity that can be accommodated after the battery capacity changes.

[0088] S330 : Based on the maximum capacity of the target battery, adjust the target battery to the maximum capacity of the target battery.

[0089] S340: If the battery capacity has not changed, adjust the real-time power of the M batteries to the average power.

[0090] The implementation principle before the embodiment of the present application performs battery charge balancing within the group is as follows: based on the health status of the battery, determine whether the battery capacity has changed, mainly by detecting whether the internal resistance of the battery has changed. If the internal resistance increases, the battery capacity decreases accordingly. When the battery capacity changes, the number of target batteries whose battery capacity has changed and the maximum capacity of the target battery are obtained, and the charge of the target battery is adjusted to the maximum capacity. If the battery capacity has not changed, the real-time charge of the M batteries is adjusted to the average charge, so as to achieve battery charge balancing within the group, and fully charge the battery whose capacity has changed to avoid an increasing gap between the capacity of the battery and the capacity of other batteries during charging and discharging.

[0091] Reference Figure 4 , before adjusting the real-time power of the M-cell battery, include:

[0092] S400: Obtain the real-time power of each MX battery in a single battery pack.

[0093] Specifically, when the MX battery is charged, the power is the current power of the battery if the battery capacity does not change.

[0094] S410 : Calculate the average power of the MX batteries based on the real-time power of the MX batteries.

[0095] Specifically, the average power of an MX battery can be calculated by summing the real-time power of each battery and dividing it by the total power of the battery. For example, if there are three batteries in total and the capacity of one battery changes, and the capacities of the other two batteries are 700mA / h and 800mA / h, respectively, then the average power of the MX battery is (700+800) / 2=750mA / h.

[0096] S420 : Based on the real-time power and the average power, adjust the real-time power of the MX battery to the average power to balance the power of the batteries in the group.

[0097] Specifically, based on the difference between the power of each battery and the average power, the power that each battery needs to absorb or release is calculated. Each battery absorbs or releases power, and the power of each battery is adjusted to the average power. For example, the capacities of two batteries are 700mA / h and 800mA / h respectively, and the average power is 750mA / h. Then, the 700mA / h battery needs to absorb 50mA / h of power, and the 800mA / h battery needs to release 50mA / h of power. After the adjustment is completed, the power of each battery is 750mA / h, and the power of the batteries remains consistent.

[0098] The implementation principle of intra-group battery power balancing in the embodiment of the present application is as follows: before performing intra-group power balancing, the batteries whose battery capacity has changed are first fully charged. When performing power balancing, the batteries whose battery capacity has changed are not considered. Therefore, when the power of the MX battery is obtained, the average power of the MX battery is calculated based on the real-time power of the MX battery, and then the real-time power of the MX battery is adjusted to the average power, and the batteries whose battery capacity has not changed are adjusted to have the same power, so that the charge and discharge degree of the MX battery is kept as consistent as possible during charging and discharging.

[0099] Reference Figure 5 , capacity balancing between battery packs includes:

[0100] S500 : Based on the battery capacities of the N battery packs, obtain an average value of the battery capacities of the N battery packs.

[0101] Specifically, the battery pack capacity is the maximum amount of electricity that the battery pack can hold. The average battery pack capacity is obtained by summing the battery capacities of N battery packs and then dividing the sum of the battery capacities by the N battery packs.

[0102] S510 : Based on the capacities of the N battery packs and the average of the capacities of the N battery packs, obtain a power difference between each battery pack and the average.

[0103] Specifically, for example, there are two battery packs, one with a capacity of 20,000 mA / h and the other with a capacity of 30,000 mA / h. The average power is 25,000 mA / h, and the power difference is the difference between the battery pack capacity and the average power. The sign of the power difference indicates whether power needs to be accepted or released. A positive sign indicates that power needs to be released, and a negative sign indicates that power needs to be accepted.

[0104] S520: Based on the power difference and the capacities of the N battery packs, perform power balancing among the battery packs.

[0105] Specifically, for example, the power difference of a 20000 mA / h battery pack is -5000 mA / h, indicating that 5000 mA / h of power needs to be received.

[0106] The real-time principle of capacity balancing between battery groups in the embodiment of the present application is as follows: when the capacities of the battery groups are different, capacity balancing between the battery groups is required. Based on the capacities of the N battery groups, the total capacity of the N battery groups is obtained. Then, based on the average capacity of the N battery groups, the difference between the capacity of each battery group and the average capacity is used to determine how much capacity each battery group needs to release or receive. The capacities between the battery groups are balanced to keep the charge levels consistent between the battery groups.

[0107] Reference Figure 6 Based on the power difference and the capacity of N battery packs, the following steps are performed before the power balancing between battery packs:

[0108] S600: Obtain the health status of M batteries in each battery pack.

[0109] Specifically, the battery's health status can be used to determine whether the battery capacity has changed during use. For example, if the battery's factory internal resistance is 4 ohms and the current resistance is measured to be 8 ohms, the battery's internal resistance has increased significantly, thus reducing the battery's capacity. The larger the battery's capacity, the smaller its internal resistance. With long-term use, the battery's internal resistance may gradually increase.

[0110] S610 : When the battery health status changes, obtain the number Y of capacity-changed batteries and the maximum capacity of the capacity-changed batteries.

[0111] Specifically, after determining that the battery capacity has changed, the current actual capacity of the battery is measured by a battery performance comprehensive tester. For example, the battery capacity before the change was 1000mA / h, and the current measured battery capacity is 800mA / h. Then the maximum capacity of the capacity-changed battery is 800mA / h.

[0112] S620: Based on the maximum capacity, adjust the capacity to change the battery charge to the maximum capacity.

[0113] Specifically, for example, the maximum capacity of the capacity-changing battery is 800 mA / h, and the current actual power is 700 mA / h, then the capacity-changing battery still needs to accept 100 mA / h of power.

[0114] The embodiment of the present application is based on the charge difference and the capacity of N battery packs. The implementation principle before performing charge balancing between battery packs is: obtain the health status of all batteries in each battery pack, and determine whether the battery capacity has changed based on the battery health status. If the capacity of the battery pack changes, the amount of charge that the changed battery can accept will decrease. Therefore, the battery pack charge of the N battery packs is adjusted according to the reduced battery capacity.

[0115] Reference Figure 7 , battery balancing between battery packs includes:

[0116] S700. Obtain the real-time power of MY batteries in each battery pack.

[0117] Specifically, the real-time power of MY batteries is the sum of the capacities of all batteries in a battery whose capacities have not changed.

[0118] S710 : Based on the real-time power of MY batteries in each battery pack, obtain the average power of N battery packs.

[0119] Specifically, each battery pack contains MY batteries whose capacity has not changed, and there are a total of N battery packs. In this embodiment, there are two battery packs, each containing 3 batteries. One battery in one group is damaged, so there are a total of 5 complete batteries in the two battery groups. The capacities of the 5 intact batteries are 600mA / h, 700mA / h, 800mA / h, 900mA / h and 1000mA / h, respectively. Then, the average power of the two battery packs is 800mA / h.

[0120] S720: Calculate the difference between the real-time power level and the average power level of each battery pack.

[0121] Specifically, the power difference is the difference between the real-time power of each battery pack and the average power. The power difference has a sign. When the power difference is positive, it means that power needs to be released. When the power difference is negative, it means that power needs to be absorbed.

[0122] S730: Based on the power difference, adjust the real-time power of each battery pack to the average power.

[0123] Specifically, for example, when the average power is 800mA / h, the battery pack with a real-time power of 700mA / h has a power difference of -100mA / h and needs to receive 100mA / h of power. When performing power balancing between groups, it is also necessary to consider the power balance within the group. For example, if the average power is 800mA / h, and the five batteries have power of 600mA / h, 700mA / h, 800mA / h, 900mA / h and 1000mA / h respectively, then the 1000mA / h battery releases 200mA / h to the 600mA / h battery, and the 900mA / h battery releases 100mA / h to the 700mA / h battery. After the release, the batteries in the group also have 800mA / h, and the power of the components is also balanced.

[0124] The implementation principle of the battery balancing between battery groups in the embodiment of the present application is as follows: after the capacity of a battery in a battery group changes, the battery with the changed battery capacity is not taken into account when calculating the average battery capacity in the battery group. Therefore, each battery group has MY normal batteries, and the average battery capacity of MY batteries in each battery group of N battery groups is calculated. Then, based on the difference between the average battery capacity and the battery capacity of each battery group, the battery capacity of each battery group is adjusted to the average battery capacity, and the battery capacity between the battery groups is balanced, so that the battery charge and discharge levels between the battery groups are kept consistent, thereby improving the service life.

[0125] A capacity balancing control method for a mobile power supply device is described in detail above. Now, a capacity balancing control system for a mobile power supply device based on the capacity balancing control method for a mobile power supply device is described in detail.

[0126] A capacity balancing control system for a mobile power supply device, comprising:

[0127] An acquisition module 1 is used to obtain the battery pack capacities of N battery packs respectively;

[0128] Determination module 2, used to determine whether the battery pack capacities of N battery packs are equal;

[0129] A first execution module 3 is configured to perform battery power balancing within the group if the battery group capacities of the N battery groups are equal;

[0130] The second execution module 4 is configured to perform power balancing between the N battery packs if the battery pack capacities of the N battery packs are not equal.

[0131] The implementation principle of a capacity balancing control system for a mobile power supply device in an embodiment of the present application is as follows: after the acquisition module 1 obtains the battery pack capacities of N battery packs, the judgment module 2 determines whether the capacities of the battery packs are equal. When the battery pack capacities are equal, the first execution module 3 adjusts the battery power within the group to keep the power of the batteries in the group balanced. When the capacities between the battery packs are unequal, the second execution module 4 balances the power between the battery packs to keep the power between the battery packs in the mobile device balanced, and the batteries in the group also keep the power balanced, thereby extending the battery life.

[0132] An embodiment of the present application also discloses a terminal device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein when the processor executes the computer program, a capacity balancing control method for a mobile power supply device in the above embodiment is adopted.

[0133] Among them, the terminal device can be a computer device such as a desktop computer, a laptop computer or a cloud server, and the terminal device includes but is not limited to a processor and a memory. For example, the terminal device can also include input and output devices, network access devices and buses, etc.

[0134] Among them, the processor can adopt a central processing unit (CPU). Of course, according to actual usage, 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. can also be adopted. The general-purpose processor can adopt a microprocessor or any conventional processor, etc., and this application does not impose any restrictions on this.

[0135] Among them, the memory can be an internal storage unit of the terminal device, such as the hard disk or memory of the terminal device, or it can be an external storage device of the terminal device, such as a plug-in hard disk, smart memory card (SMC), secure digital card (SD) or flash memory card (FC) equipped on the terminal device, etc., and the memory can also be a combination of the internal storage unit and the external storage device of the terminal device. The memory is used to store computer programs and other programs and data required by the terminal device. The memory can also be used to temporarily store data that has been output or is to be output. This application does not impose any restrictions on this.

[0136] Among them, through this terminal device, a capacity balancing control method of a mobile power supply device in the above embodiment is stored in the memory of the terminal device, and is loaded and executed on the processor of the terminal device for easy use.

[0137] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A capacity balancing control method for a mobile power supply device, characterized in that: Applicable to a mobile power supply device, the mobile power supply device having N battery packs, each battery pack consisting of M single cells, where N and M are positive integers greater than 1, including: Obtaining the battery pack capacities of the N battery packs respectively; Determining whether the battery pack capacities of the N battery packs are equal; If the battery pack capacities of the N battery packs are equal, performing battery capacity balancing within the pack; If the battery capacities of the N battery packs are not equal, performing power balancing between the battery packs; The method of performing battery power balancing within a group includes: Get the battery health status of M batteries; Based on the battery health status, determining whether the battery capacity of the M batteries has changed; If the battery capacity changes, obtain the target battery quantity X and the maximum capacity of the target battery; Based on the maximum capacity of the target battery, adjusting the target battery to the maximum capacity of the target battery; If the battery capacity does not change, adjusting the real-time power of the M batteries; The performing of battery power balancing within the group includes: Get the real-time power of each MX battery in a single battery pack; Calculate the average power of the MX battery based on the real-time power of the MX battery; Based on the real-time power and the average power, the real-time power of the MX battery is adjusted to the average power to balance the power of the batteries within the group.

2. The capacity balancing control method of a mobile power supply device according to claim 1, characterized in that: The step of respectively obtaining the battery pack capacities of the N battery packs includes: Detect whether there is current between the M cells in a single battery pack; If there is current between the M single cells, wait for the battery pack to stop working; If there is no current between the M single battery cells, the battery pack capacity is obtained.

3. The capacity balancing control method of a mobile power supply device according to claim 1, characterized in that: The capacity balancing between battery packs includes: Based on the battery capacities of the N battery packs, obtaining an average value of the battery capacities of the N battery packs; Based on the capacities of the N battery packs and an average of the capacities of the N battery packs, obtaining a power difference between each battery pack and the average value; Based on the power difference and the capacities of the N battery packs, power balancing is performed between the battery packs.

4. The capacity balancing control method of a mobile power supply device according to claim 3, characterized in that: Before performing power balancing between the battery packs based on the power difference and the capacities of the N battery packs, the method further includes: Get the health status of the M batteries in each battery pack; When the battery health state changes, obtaining the number Y of capacity-changed batteries indicating a battery capacity change and the maximum capacity of the capacity-changed batteries; Based on the maximum capacity, the capacity is adjusted to change the charge of the battery to the maximum capacity.

5. The capacity balancing control method of a mobile power supply device according to claim 4 comprises: The battery balancing between battery packs includes: Get the real-time power of MY batteries in each battery pack; Based on the real-time power of MY batteries in each battery pack, the average power of N battery packs is obtained; Calculate the difference between the real-time power and the average power of each battery pack; Based on the power difference, the real-time power of each battery pack is adjusted to the average power.

6. A capacity balancing control system for a mobile power supply device, using the method according to any one of claims 1 to 5, characterized in that: include: An acquisition module (1) is used to respectively acquire the battery pack capacities of the N battery packs; A judgment module (2) is used to judge whether the battery pack capacities of the N battery packs are equal; A first execution module (3) is configured to perform battery capacity balancing within the group if the battery group capacities of the N battery groups are equal; The second execution module (4) is used for performing power balancing between the battery packs if the battery pack capacities of the N battery packs are not equal.

7. A terminal device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor loads and executes the computer program, the method described in any one of the capacity balancing control methods for a mobile power supply device in claim 1 is adopted.

Images