Battery capacity activation method and apparatus, and electronic device and storage medium

Abstract

Provided in the present application are a battery capacity activation method and apparatus, and an electronic device and a storage medium. In the method, in a constant-voltage charging stage, a battery is charged to a relatively small cutoff current and is discharged to a relatively high SoC, and charging and discharging are cyclically performed, such that during charging and discharging, a lithium-ion passage in the battery is opened, negative-electrode lithium-intercalated sites are activated, and some positive-electrode inert lithium ions are activated, thereby eliminating battery capacity ramp-up, and increasing the capacity of the battery.

Description

Battery capacity activation method, device, electronic device and storage medium

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 5, 2023, with application number 202311142943.3. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a method, device, electronic device and storage medium for activating battery capacity. Background Art

[0003] Lithium-ion batteries are widely used in energy storage, passenger cars, and commercial vehicles due to their excellent cycle life, wide operating temperature range, short charging time, high environmental performance, high safety, and relatively simple assembly. To increase product competitiveness, researchers often increase the energy density of lithium-ion batteries by increasing the positive electrode compaction density. Correspondingly, the negative electrode compaction density is increased to accommodate more lithium ions. High compaction density leads to insufficient electrolyte infiltration, increased electrode resistance, and difficulty in the process of lithium ions escaping from the positive electrode and embedding into the negative electrode. At this point, the battery needs to cycle 30 or more times to gradually reach its maximum capacity, with a capacity climbing rate of 5% to 8%.

[0004] In related technologies, in order to reduce the capacity ramp rate of batteries, the capacity ramp rate of lithium-ion batteries with high positive and negative electrode compaction is usually improved. However, this method of improving the positive and negative electrode compaction has disadvantages such as high R&D costs and long R&D time. It also requires consideration of the selection and processing of raw materials, verification of battery design parameters, etc., making it difficult for the battery capacity to be quickly utilized and reducing the activation efficiency of the battery capacity. Technical issues

[0005] The embodiments of the present application provide a method, device, electronic device, and storage medium for activating battery capacity, which can improve the technical problem that battery capacity is difficult to quickly utilize. Technical Solutions

[0006] To achieve this goal, this application adopts the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a method for activating battery capacity, the method comprising: performing constant current charging on the battery to be activated at a first preset current rate under a preset ambient temperature, and charging to a charging cut-off voltage V1 of the battery to be activated, wherein the first preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated; performing constant voltage charging on the battery to be activated at the charging cut-off voltage V1, and charging to a preset cut-off current, wherein the preset cut-off current is less than or equal to 0.2 times the maximum continuous charging current C of the battery to be activated; and placing the battery to be activated at the preset ambient temperature for a first preset current rate. duration; performing constant current discharge on the battery to be activated according to a second preset current rate, and discharging a quantity of electricity as a preset percentage SOC, wherein the second preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, and the preset percentage SOC is less than 10% SOC; allowing the battery to be activated to stand at the preset ambient temperature for a second preset time; continuing to cycle the steps of performing constant current charging on the battery to be activated according to the first preset current rate at the preset ambient temperature, and charging to the charging cut-off voltage V1 of the battery to be activated, to performing constant current discharge on the battery to be activated according to the second preset current rate, and discharging a quantity of electricity as a preset percentage SOC for a preset number of times.

[0008] In a second aspect, an embodiment of the present application provides a battery capacity activation device, which includes: a first charging module for performing constant current charging on the battery to be activated at a preset ambient temperature according to a first preset current rate, and charging to a charging cut-off voltage V1 of the battery to be activated, wherein the first preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated; a second charging module for performing constant voltage charging on the battery to be activated according to the charging cut-off voltage V1, and charging to a preset cut-off current, wherein the preset cut-off current is less than or equal to the maximum continuous charging current of the battery to be activated. C is 0.2 times; a first rest module is used to rest the battery to be activated at the preset ambient temperature for a first preset time; a discharge module is used to perform constant current discharge on the battery to be activated according to a second preset current rate, and the discharged power is a preset percentage SOC, wherein the second preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, and the preset percentage SOC is less than 10% SOC; a second rest module is used to rest the battery to be activated at the preset ambient temperature for a second preset time; a cyclic execution module is used to cyclically execute the steps from the first charging module to the second rest module for a preset number of times.

[0009] In a third aspect, an embodiment of the present invention provides an electronic device comprising: one or more processors; a memory; and one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the battery capacity activation method described in any scheme of the first aspect.

[0010] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the battery capacity activation method described in any scheme of the first aspect is implemented. Beneficial effects

[0011] Beneficial effects of this application:

[0012] In the embodiments of the present application, the battery is charged to a smaller cutoff current and discharged to a higher SOC during the constant voltage charging stage to perform a charge and discharge cycle. This allows the lithium ion pathway in the battery to be opened, the negative electrode lithium insertion sites to be activated, and some of the positive electrode inert lithium ions to be activated during the charge and discharge process. This reduces the polarization degree of the battery during the charge and discharge process, improves the electrode mass transfer kinetics, eliminates the battery capacity climb, and increases the battery capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0014] FIG1 is a schematic flow chart of an embodiment of a method for activating battery capacity provided by an embodiment of the present invention;

[0015] FIG2 is a schematic structural diagram of an embodiment of a battery capacity activation device provided in an embodiment of the present application;

[0016] FIG3 is a schematic diagram of a capacity curve of a certain type of large-capacity square lithium iron phosphate battery provided in an embodiment of the present application. Modes for Carrying Out the Invention

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described 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, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0018] The technical solution of the present application will be further explained below with reference to the accompanying drawings and through specific implementation methods.

[0019] The embodiment of the present application provides a method for activating battery capacity, the method comprising: performing constant current charging on a battery to be activated at a first preset current rate under a preset ambient temperature, and charging to a charging cut-off voltage V1 of the battery to be activated, wherein the first preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated; performing constant voltage charging on the battery to be activated at the charging cut-off voltage V1, and charging to a preset cut-off current, wherein the preset cut-off current is less than or equal to 0.2 times the maximum continuous charging current C of the battery to be activated; leaving the battery to be activated at the preset ambient temperature for a first preset time; The battery to be activated is discharged at a constant current rate according to a second preset current rate, and the discharged charge is a preset percentage of the SOC, wherein the second preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, and the preset percentage of the SOC is less than 10% of the SOC; the battery to be activated is left to stand at the preset ambient temperature for a second preset time; and the steps of charging the battery to be activated at a constant current rate according to the first preset current rate at the preset ambient temperature to a charge cutoff voltage V1 of the battery to be activated are continuously repeated for a preset number of times. Detailed descriptions are given below.

[0020] As shown in FIG1 , it is a flow chart of an embodiment of a method for activating battery capacity in an embodiment of the present application. The method for activating battery capacity includes the following steps S1 to S6:

[0021] S1. Under a preset ambient temperature, the battery to be activated is charged with a constant current at a first preset current rate to a charging cut-off voltage V1 of the battery to be activated, wherein the first preset current rate is less than or equal to a maximum continuous charging current C of the battery to be activated.

[0022] The battery to be activated is a lithium-ion battery. The preset ambient temperature is a preset ambient temperature for the environment in which the battery to be activated is to be activated, such as room temperature of 25°C. It can also be a common temperature in the battery manufacturing process, thereby eliminating the need to purchase new equipment to activate the battery to be activated, thereby reducing costs.

[0023] When it is confirmed that the battery to be activated is in normal use, the corresponding charge cut-off voltage V1, discharge cut-off voltage V2, and maximum continuous charge current C are determined, and the first preset current rate is less than or equal to the maximum continuous charge current C of the battery to be activated.

[0024] Specifically, at a preset ambient temperature, the battery to be activated is charged with a constant current at a first preset current rate and is charged to the charging cut-off voltage V1 of the battery to be activated. That is, at the preset ambient temperature, the battery to be activated is fully charged with a constant current at a rate that is less than or equal to the maximum continuous charging current C of the battery to be activated, so that the battery to be activated reaches the charging cut-off voltage V1. Since the battery to be activated is not overcharged and the first preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, the battery to be activated will not be damaged, thereby achieving protection of the battery to be activated.

[0025] S2. Perform constant voltage charging on the battery to be activated according to the charging cut-off voltage V1 and charge to a preset cut-off current, wherein the preset cut-off current is less than or equal to 0.2 times the maximum continuous charging current C of the battery to be activated.

[0026] The preset cut-off current is less than or equal to 0.2 times the maximum continuous charging current C of the battery to be activated. The preset cut-off current is relatively small. For example, the preset cut-off current is 0.1C.

[0027] Specifically, after the battery to be activated is charged to the charging cut-off voltage V1 of the battery to be activated, the battery to be activated is continuously charged at constant voltage according to the charging cut-off voltage V1 until the current of the battery to be activated is a preset cut-off current, and the preset cut-off current is less than or equal to 0.2 times the maximum continuous charging current C of the battery to be activated, ensuring that the battery to be activated is not overcharged. At the same time, in this embodiment, the battery to be activated after constant current charging is charged at constant voltage at the charging cut-off voltage V1, and is charged until the current of the battery to be activated is the preset cut-off current. Since the preset cut-off current is a relatively small current, the amount of electricity in the battery to be activated increases during the charging process, thereby opening the gaps of the negative electrode lithium ions in the battery to be activated, activating the negative electrode lithium insertion sites, and reducing polarization, which is conducive to eliminating the capacity climb of the battery to be activated, and achieving the goal of ensuring that the battery to be activated is not damaged while improving the battery capacity.

[0028] S3. The battery to be activated is placed at a preset ambient temperature for a first preset time.

[0029] The first preset duration may be 5 minutes, 10 minutes, etc.

[0030] Specifically, since the temperature of the battery to be activated after being charged will increase, the surface temperature of the battery to be activated after being charged can be reduced by leaving the battery to be activated at a preset ambient temperature for a first preset period of time. At the same time, the standing process can also eliminate the polarization voltage generated during charging, thereby reducing the polarization voltage and thus reducing the polarization degree of the battery to be activated.

[0031] S4. Discharging the battery to be activated at a constant current according to a second preset current rate, and discharging a quantity of electricity at a preset percentage SOC, wherein the second preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, and the preset percentage SOC is less than 10% SOC.

[0032] Among them, SOC stands for State of Charge, which is also called the remaining capacity. It represents the ratio of the remaining dischargeable capacity of the battery after a period of use or long-term storage to the capacity of its fully charged state. It is usually expressed as a percentage. The preset percentage SOC is less than 10% SOC. Since the preset percentage SOC is the discharged capacity, that is, the battery to be activated is discharged to more than 90% of the nominal capacity, which is a higher SOC discharge. For example, the preset percentage SOC can be 5% SOC. The preset percentage SOC can be set according to the capacity climbing rate of the battery to be activated. For example, if the capacity climbing rate is about 5%, the corresponding preset percentage SOC is 5%.

[0033] Specifically, after the battery to be activated is charged to a preset cutoff current and left to stand, the battery to be activated is discharged at a constant current rate according to a second preset current rate and discharged to a preset percentage SOC, that is, the battery to be activated is not fully discharged, and is discharged at a higher SOC, which saves time for the battery capacity. At the same time, the battery to be activated is discharged at a constant current rate that is less than or equal to the maximum continuous charging current C of the battery to be activated. Since the battery to be activated is not over-discharged and the second preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, the battery to be activated will not be damaged. In this embodiment, the battery to be activated is discharged at a constant current rate at the second preset current rate and discharged to a preset percentage SOC. Since the preset percentage SOC is a higher SOC, the activation time is reduced, so that during the discharge process, the lithium ion path is opened, the negative electrode lithium insertion sites are activated, and some of the positive electrode inert lithium ions are activated, which reduces the polarization degree of the battery during the charging and discharging process, which is conducive to eliminating the capacity climb of the battery to be activated, and achieves the goal of ensuring that the battery to be activated is not damaged while improving the battery capacity.

[0034] It should be noted that the capacity climbing rate can be calculated by the formula: 1-(minimum rated capacity / maximum rated capacity). Therefore, the closer the minimum rated capacity is to the maximum rated capacity, the smaller the capacity climbing rate is. In this embodiment, the battery capacity is increased so that the minimum rated capacity is close to the maximum rated capacity, thereby reducing the capacity climbing rate.

[0035] S5. The battery to be activated is placed at a preset ambient temperature for a second preset time period.

[0036] The second preset duration may be 5 minutes, 10 minutes, etc.

[0037] Specifically, since the temperature of the battery to be activated will increase after charging, the battery to be activated is left to stand at a preset ambient temperature for a first preset time period, which can eliminate the temperature difference between the surface temperature of the battery to be activated after discharge and the preset ambient temperature, thereby reducing the degree of polarization. Since the polarization degree of the battery that has just been charged and discharged is large, the polarization degree decreases after standing, and the battery is closer to the equilibrium potential, thereby improving the activation effect of the subsequent process steps.

[0038] S6, continue to cycle the steps of charging the battery to be activated at a preset ambient temperature at a first preset current rate to a charging cut-off voltage V1 of the battery to be activated, and discharging the battery to be activated at a second preset current rate to a preset percentage SOC for a preset number of times.

[0039] Among them, the preset number of times can be 1 time, 2 times or 3 times, etc., which can be determined according to the positive and negative electrode compaction density and capacity climbing rate of the battery to be activated. For example, the greater the positive and negative electrode compaction density or the higher the capacity climbing rate, the larger the value of the preset number of times.

[0040] Specifically, by charging with a relatively small current (step S1 to step S3) and discharging with a high SOC (step S4), the battery capacity of the battery to be activated can be quickly activated, the battery capacity climb can be eliminated, and the battery capacity can be increased. By cyclically executing steps S1 to step S5 for a preset number of times, a preset number of charge and discharge cycles of charging with a relatively small current and discharging with a high SOC can be achieved, thereby improving the effect of lithium ions in the battery being removed from the positive electrode and embedded in the negative electrode, reducing the polarization degree of the battery, and further efficiently activating the battery to be activated, thereby bringing into play the maximum capacity of the battery.

[0041] In the above-mentioned battery capacity activation method, at a preset ambient temperature, the battery to be activated is subjected to constant current charging according to a first preset current rate and charged to a charging cut-off voltage V1 of the battery to be activated, wherein the first preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated; the battery to be activated is subjected to constant voltage charging according to the charging cut-off voltage V1 and charged to a preset cut-off current, wherein the preset cut-off current is less than or equal to 0.2 times the maximum continuous charging current C of the battery to be activated; the battery to be activated is left at rest for a first preset time at a preset ambient temperature; the battery to be activated is subjected to constant current discharge according to a second preset current rate and discharged to a preset percentage SOC, wherein the second preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, and the preset percentage SOC is greater than 90% SOC and less than 100% SOC; the battery to be activated is left at rest for a second preset time at a preset ambient temperature. ; Continue to cycle the steps of charging the battery to be activated at a preset ambient temperature at a first preset current rate and charging it to the charging cut-off voltage V1 of the battery to be activated, and discharging the battery to be activated at a second preset current rate at a constant current and discharging the amount of electricity to be a preset percentage SOC for a preset number of times, by charging the battery to a smaller cut-off current and discharging it to a higher SOC in the constant voltage charging stage, so that during the charging and discharging process, the lithium ion path in the battery is opened, the negative electrode lithium insertion sites are activated, and some of the positive electrode inert lithium ions are activated, thereby reducing the polarization degree of the battery during the charging and discharging process, improving the electrode mass transfer kinetics process, eliminating the battery capacity climb, and increasing the battery capacity.

[0042] Furthermore, the preset ambient temperature is 20°C to 40°C, preferably, the preset ambient temperature is 25°C to 35°C.

[0043] Specifically, the preset ambient temperature is 20°C to 40°C, preferably, the preset ambient temperature is 25°C to 35°C. The preset ambient temperature is a common temperature in the battery manufacturing process, which avoids re-purchasing equipment and saves battery capacity activation costs.

[0044] Furthermore, the first preset current ratio is 0.2C to 1C.

[0045] Specifically, the first preset current rate is 0.2C to 1C, that is, the first preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, does not involve overcharging of the battery to be activated, and does not damage the battery to be activated.

[0046] It is worth noting that the first preset current magnification can be flexibly set according to actual conditions and adjusted accordingly.

[0047] Furthermore, the charging cut-off voltage V1 is 3.65V.

[0048] Specifically, the charge cut-off voltage V1 is 3.65V, and the discharge cut-off voltage V2 is 2.5V. In this embodiment, by determining the charge cut-off voltage V1, subsequent charging and discharging are performed based on the charge cut-off voltage V1 to avoid overcharging and over-discharging of the battery to be activated.

[0049] Furthermore, the first preset duration is greater than or equal to 5 minutes.

[0050] Specifically, the first preset time period is greater than or equal to 5 minutes, ensuring that the temperature difference between the battery to be activated and the preset ambient temperature is reduced, thereby improving the activation efficiency of the subsequent battery capacity.

[0051] It is worth noting that the first preset duration can be flexibly set according to actual circumstances and adjusted accordingly.

[0052] Furthermore, the second preset current ratio is 0.2C to 1C.

[0053] Specifically, the second preset current rate is 0.2C to 1C, that is, the second preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, does not involve overcharging of the battery to be activated, and does not damage the battery to be activated.

[0054] It is worth noting that the second preset current magnification can be flexibly set according to actual conditions and adjusted accordingly.

[0055] Furthermore, the preset cut-off current is 0.02C to 0.1C.

[0056] Specifically, the preset cutoff current is 0.02C to 0.1C, that is, the preset cutoff current is relatively small. Therefore, during the constant voltage charging process, the power can be increased, so that the lithium ion path is opened during the charging process, the negative electrode lithium insertion sites are activated, and some of the positive electrode inert lithium ions are activated, thereby reducing the polarization degree of the battery during the charging process.

[0057] It is worth noting that the preset cut-off current can be flexibly set according to actual conditions and adjusted accordingly.

[0058] Furthermore, the preset number of times is 1 to 3 times.

[0059] Specifically, the preset number of times can be 1 time, that is, continuing to cycle step S1-step S5 once, or it can be 2 times or 3 times. By cycling the aforementioned steps S1-step S5 twice or three times, the effect of lithium ions in the battery being removed from the positive electrode and embedded in the negative electrode is further improved, thereby increasing the battery capacity.

[0060] It is worth noting that the preset number of times can be flexibly set according to actual circumstances and adjusted accordingly.

[0061] Furthermore, the preset percentage SOC is 5% SOC.

[0062] Specifically, the preset percentage SOC is 5% SOC, that is, the discharged power is 5% of the rated power, which is a high SOC discharge. Therefore, during the discharge process, the power can be increased, so that the lithium ion path is opened during the charging process, the negative electrode lithium insertion site is activated, and some of the positive electrode inert lithium ions are activated, thereby reducing the polarization degree of the battery during the discharge process.

[0063] It is worth noting that the preset percentage SOC can be flexibly set according to actual conditions and adjusted accordingly.

[0064] Furthermore, before performing constant current charging on the battery to be activated according to the first preset current rate at the preset ambient temperature, the method further includes: allowing the battery to be activated to stand for a third preset time at the preset ambient temperature so that the surface temperature of the battery to be activated is within the preset ambient temperature.

[0065] The third preset duration may be 5 minutes, 10 minutes, etc.

[0066] Specifically, the battery to be activated is left at a preset ambient temperature for a third preset time period so that the surface temperature of the battery to be activated is within the preset ambient temperature, thereby reducing the temperature difference between the battery to be activated and the preset ambient temperature and improving the subsequent activation efficiency of the battery capacity.

[0067] In one example, as shown in Table 1, it is a data table of multiple groups of capacity climbing cycles and capacity climbing rates of a certain model of large-capacity square lithium iron phosphate battery. As shown in Figure 3, it is a schematic diagram of the capacity curve of a certain model of large-capacity square lithium iron phosphate battery, wherein Figure 3 shows a certain model of large-capacity square lithium iron phosphate battery of 6 groups in Table 1 at constant power (0.5P), that is, a schematic diagram of the capacity curve under the national standard. The horizontal axis of the capacity curve is the number of climbing cycles (illustrated as Cycle number), and the vertical axis of the capacity curve is the battery capacity of a certain model of large-capacity square lithium iron phosphate battery, that is, the capacity retention rate (illustrated as Capacity Retention%), implementation group-1# and implementation group-2# carried out the battery capacity activation of the aforementioned steps S1 to S5 once, with 4 capacity climbing laps and a capacity climbing rate of 1%; implementation group-3# and implementation group-4# carried out the battery capacity activation of the aforementioned steps S1 to S3, with 8 capacity climbing laps and a capacity climbing rate of less than 2%; the batteries in the experimental group can exert more than 99.5% of their capacity after 3 cycles, and the batteries in the control group have a capacity climbing number of more than 9 laps and a capacity climbing rate of more than 5%. It can be seen from Table 2 and Figure 3 that the initial capacity of the batteries after activation in the implementation group is higher. Therefore, the battery capacity activation method in the embodiment of the present application can reduce the battery capacity climbing rate and increase the battery capacity.

[0068] Table 1. Data table of capacity climbing cycles and capacity climbing rate of multiple groups of a certain type of large-capacity square lithium iron phosphate battery

[0069] In order to better implement the battery capacity activation method in the embodiment of the present application, based on the battery capacity activation method, the embodiment of the present application further provides a battery capacity activation device, as shown in FIG3 , the battery capacity activation device 200 includes:

[0070] The first charging module 201 is configured to charge the battery to be activated at a preset ambient temperature at a first preset current rate to a constant current, and charge the battery to be activated to a charging cut-off voltage V1, wherein the first preset current rate is less than or equal to a maximum continuous charging current C of the battery to be activated;

[0071] The second charging module 202 is configured to perform constant voltage charging on the battery to be activated according to the charging cut-off voltage V1 and charge the battery to a preset cut-off current, wherein the preset cut-off current is less than or equal to 0.2 times the maximum continuous charging current C of the battery to be activated;

[0072] A first rest module 203 is configured to place the battery to be activated at the preset ambient temperature for a first preset time period;

[0073] a discharge module 204 configured to perform constant current discharge on the battery to be activated at a second preset current rate, discharging the battery to be activated to a preset percentage SOC, wherein the second preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, and the preset percentage SOC is greater than or less than 10% SOC;

[0074] The second static module 205 is used to allow the battery to be activated to stand at the preset ambient temperature for a second preset time;

[0075] The loop execution module 206 is configured to loop through the steps from the first charging module to the second resting module for a preset number of times.

[0076] Furthermore, the charging cut-off voltage V1 is 3.65V.

[0077] Furthermore, the battery capacity activation device also includes:

[0078] The standing module is used to stand the battery to be activated at the preset ambient temperature for a third preset time period so that the surface temperature of the battery to be activated is within the preset ambient temperature.

[0079] An embodiment of the present application further provides an electronic device that integrates any one of the battery capacity activation devices provided in the embodiments of the present application, the electronic device comprising:

[0080] one or more processors;

[0081] Memory; and

[0082] One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to execute the battery capacity activation method described in any of the above battery capacity activation method embodiments.

[0083] An embodiment of the present application also provides an electronic device that integrates any battery capacity activation device provided in the embodiment of the present application.

[0084] The electronic device may include one or more processors with processing cores, one or more computer-readable storage media memories, a power supply, an input unit, and other components. Those skilled in the art will appreciate that the electronic device structure does not limit the electronic device and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently. Among them:

[0085] The processor is the control center of the electronic device, connecting the various parts of the entire electronic device using various interfaces and lines. By running or executing software programs and / or modules stored in the memory and accessing data stored in the memory, it performs various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. Optionally, the processor may include one or more processing cores; preferably, the processor may integrate an application processor and a modem processor, wherein the application processor primarily handles the operating system, user interface, and application programs, while the modem processor primarily handles wireless communications. It is understood that the modem processor may not be integrated into the processor.

[0086] The memory can be used to store software programs and modules. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device, etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage device. Accordingly, the memory may also include a memory controller to provide the processor with access to the memory.

[0087] Electronic devices also include a power supply for supplying power to various components. Preferably, the power supply can be logically connected to the processor via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The power supply can also include one or more DC or AC power supplies, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and other arbitrary components.

[0088] The electronic device may further include an input unit, which may be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0089] Although not shown, the electronic device may further include a display unit and the like, which will not be described in detail here.

[0090] Specifically in this embodiment, the processor in the electronic device will load the executable files corresponding to the processes of one or more applications into the memory according to the following instructions, and the processor will run the applications stored in the memory to achieve various functions.

[0091] A computer-readable storage medium stores a computer program, which implements the steps in the above-mentioned battery capacity activation method when executed by a processor.

[0092] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0093] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above is a detailed introduction to the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for activating battery capacity, comprising the following steps: At a preset ambient temperature, the battery to be activated is charged with a constant current at a first preset current rate and charged to a charging cut-off voltage V1 of the battery to be activated, wherein: The first preset current ratio is less than or equal to the maximum continuous charging current C of the battery to be activated; The battery to be activated is charged at a constant voltage according to the charging cut-off voltage V1, and is charged to a preset cut-off current, wherein the preset cut-off current is less than or equal to 0.2 times the maximum continuous charging current C of the battery to be activated; Allowing the battery to be activated to stand at the preset ambient temperature for a first preset time period; The battery to be activated is discharged at a constant current according to a second preset current rate, and the discharged power is a preset percentage SOC, wherein the second preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, and the preset percentage SOC is less than 10% SOC; The battery to be activated is placed at the preset ambient temperature for a second preset time period; the steps of charging the battery to be activated at a first preset current rate at the preset ambient temperature and charging it to a charging cut-off voltage V1 of the battery to be activated are continuously executed, and the steps of discharging the battery to be activated at a second preset current rate at a constant current and discharging the power to be activated to a preset percentage SOC are continuously executed for a preset number of times.

2. The method for activating battery capacity according to claim 1, wherein: The preset ambient temperature is 20°C to 40°C, preferably, the preset ambient temperature is 25°C to 35°C.

3. The method for activating battery capacity according to claim 1 or 2, wherein: The first preset current ratio is 0.2C to 1C.

4. The method for activating battery capacity according to claim 1, wherein: The charging cut-off voltage V1 is 3.65V.

5. The method for activating battery capacity according to claim 1, wherein: The preset cut-off current is 0.02C to 0.1C.

6. The method for activating battery capacity according to claim 1, wherein: The first preset duration is greater than or equal to 5 minutes.

7. The method for activating battery capacity according to claim 1, wherein: The second preset current ratio is 0.2C to 1C.

8. The method for activating battery capacity according to claim 1, wherein: The preset number of times is 1 to 3 times.

9. The method for activating battery capacity according to claim 1, wherein: The preset percentage SOC is 5% SOC.

10. The method for activating battery capacity according to any one of claims 1 to 9, before performing constant current charging on the battery to be activated at a first preset current rate at a preset ambient temperature, further comprising: The battery to be activated is left to stand at the preset ambient temperature for a third preset time period, so that the surface temperature of the battery to be activated is within the preset ambient temperature.

11. A battery capacity activation device, the battery capacity activation device comprising: A first charging module, used for performing constant current charging of the battery to be activated at a first preset current rate under a preset ambient temperature, and charging to a charging cut-off voltage V1 of the battery to be activated, wherein the first preset current rate is less than or equal to a maximum continuous charging current C of the battery to be activated; a second charging module, configured to perform constant voltage charging on the battery to be activated according to the charging cut-off voltage V1, and charge the battery to a preset cut-off current, wherein the preset cut-off current is less than or equal to 0.2 times of the maximum continuous charging current C of the battery to be activated; A first static module, used for allowing the battery to be activated to stand at the preset ambient temperature for a first preset time period; A discharge module, used for performing constant current discharge on the battery to be activated according to a second preset current rate, and the discharged power is a preset percentage SOC, wherein the second preset current rate is less than or equal to the maximum continuous charging current C of the battery to be activated, and the preset percentage SOC is less than 10% SOC; A second static module, used for allowing the battery to be activated to stand at the preset ambient temperature for a second preset time period; The loop execution module is used to loop the steps from the first charging module to the second static module for a preset number of times.

12. The battery capacity activation device according to claim 11, wherein: The charging cut-off voltage V1 is 3.65V.

13. The battery capacity activation device according to any one of claims 11-12, further comprising: The standing module is used to stand the battery to be activated at the preset ambient temperature for a third preset time period so that the surface temperature of the battery to be activated is within the preset ambient temperature.

14. An electronic device, comprising: one or more processors; Memory; as well as One or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the battery capacity activation method according to any one of claims 1 to 10.

15. A computer-readable storage medium having a computer program stored thereon, wherein the computer program is loaded by a processor to execute the battery capacity activation method according to any one of claims 1 to 10.

Images