Battery full-charge determination method and apparatus, electronic device, and storage medium

Abstract

The present application relates to the technical field of external power supply for energy storage systems, and discloses a battery full-charge determination method and apparatus, an electronic device, and a storage medium. The method comprises: acquiring a real-time temperature of a battery during a charging process; if the real-time temperature is greater than or equal to a first temperature threshold, adjusting a full-charge current of the battery from an initial current to a first current, so as to perform full-charge determination for the battery on the basis of the first current, the first current being greater than the initial current; and if the real-time temperature is less than the first temperature threshold, performing full-charge determination for the battery on the basis of the initial current. The present application provides an improved battery full-charge determination method, thereby reducing the total amount of charge of the battery in high-temperature scenarios and preventing the battery from being overcharged.

Description

A method, apparatus, electronic device, and storage medium for determining a battery is fully charged.

[0001] This application claims priority to Chinese Patent Application No. 202411586583.0, filed on November 7, 2024, entitled "A Method, Apparatus, Electronic Device and Storage Medium for Determining Full Charge of a Battery", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of external power supply technology for energy storage systems, specifically relating to a method, device, electronic equipment, and storage medium for determining a battery full charge. Background Technology

[0003] Batteries made of different materials undergo volume changes when lithium ions are released, resulting in material breakage, peeling, and deactivation, which are particularly pronounced at high temperatures and after aging. Furthermore, the degree to which a battery cell can be overcharged varies with increasing temperature or aging.

[0004] Batteries made of silicon can store ten times more lithium ions than those made of graphite, significantly increasing battery capacity and energy density. However, silicon batteries are also more prone to material fracture, delamination, and deactivation at high temperatures and after aging.

[0005] Currently, during the battery charging process and when it is determined to be fully charged, high temperatures can cause the battery to be charged with too much power, leading to battery breakage, separation, and deactivation. Summary of the Invention

[0006] Purpose of the invention: This application develops a method for determining full charge of a battery to improve the method for determining full charge of a battery, thereby reducing the overall charging capacity of the battery in high-temperature scenarios and preventing the battery from being charged with too much power.

[0007] Technical solution: In a first aspect, embodiments of this application provide a method for determining a battery is fully charged, including:

[0008] Obtain the real-time temperature of the battery during the charging process;

[0009] If the real-time temperature is greater than or equal to the first temperature threshold, the full charge current of the battery is adjusted from the initial current to the first current, so as to determine the full charge of the battery based on the first current, which is greater than the initial current.

[0010] If the real-time temperature is less than the first temperature threshold, the battery is determined to be fully charged based on the initial current.

[0011] In some embodiments, the method further includes:

[0012] If the real-time temperature is greater than or equal to the second temperature threshold, the full charge current of the battery is adjusted from the first current to the second current, so as to determine the full charge of the battery based on the second current; the second current is greater than the first current, and the second temperature threshold is greater than the first temperature threshold.

[0013] In some embodiments, when the battery type is a graphite anode battery, the first temperature threshold is 40°C and the second temperature threshold is 45°C; when the battery type is a silicon anode battery, the first temperature threshold is 35°C and the second temperature threshold is 45°C.

[0014] In some embodiments, the method further includes:

[0015] To determine the degree of battery aging;

[0016] If the degree of aging meets the first preset condition, the battery is charged based on the initial voltage;

[0017] If the degree of aging meets the second preset condition, the battery charging voltage is adjusted from the initial voltage to the first voltage, so that the battery is charged based on the first voltage, which is less than the initial voltage.

[0018] In some embodiments, the method further includes:

[0019] If the degree of aging meets the third preset condition, the battery charging voltage is adjusted from the first voltage to the second voltage to charge the battery based on the second voltage, which is lower than the first voltage.

[0020] In some embodiments, the degree of aging is characterized by cumulative charging capacity; determining that the degree of aging meets a first preset condition includes:

[0021] If the cumulative charging capacity is less than the first capacity threshold, then the aging degree is determined to meet the first preset condition.

[0022] Determining that the degree of aging meets the second preset condition includes:

[0023] If the cumulative charging capacity is greater than or equal to the first capacity threshold and less than the second capacity threshold, then the aging degree is determined to meet the second preset condition.

[0024] Determining that the degree of aging meets the third preset condition includes:

[0025] If the cumulative charging capacity is greater than or equal to the second capacity threshold, then the aging level is determined to meet the third preset condition.

[0026] In some embodiments, the first capacity threshold is 200 times to 400 times the battery design capacity, and the second capacity threshold is 500 times to 700 times the battery design capacity.

[0027] Secondly, embodiments of this application provide a battery full charge determination device, comprising:

[0028] The temperature monitoring module is used to obtain the real-time temperature of the battery during the charging process;

[0029] The first full charge current adjustment module is used to adjust the full charge current of the battery from the initial current to the first current if the real-time temperature is greater than or equal to the first temperature threshold, so as to determine the full charge of the battery based on the first current, wherein the first current is greater than the initial current.

[0030] The second full charge current adjustment module is used to determine whether the battery is fully charged based on the initial current if the real-time temperature is less than the first temperature threshold.

[0031] Thirdly, embodiments of this application provide an electronic device, which includes a memory and at least one processor. The memory stores instructions, and the processor calls the instructions in the memory to cause the electronic device to execute any of the above-mentioned battery full charge determination methods.

[0032] Fourthly, embodiments of this application provide a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the battery full charge determination method described above.

[0033] Beneficial Effects: The battery full charge determination method provided in this application includes acquiring the real-time temperature of the battery during the charging process; if the real-time temperature is greater than or equal to a first temperature threshold, the full charge current of the battery is adjusted from the initial current to a first current, so as to determine the full charge of the battery based on the first current, wherein the first current is greater than the initial current; if the real-time temperature is less than the first temperature threshold, the battery is determined to be fully charged based on the initial current; that is, this application utilizes the characteristic that the battery cells have higher charging capacity at high temperatures, and reduces the overall charging capacity at high temperatures by increasing the full charge current of the battery, thereby slowing down the battery's expansion rate and capacity decay rate. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 is an overall flowchart of the battery full charge determination method provided in the embodiments of this application when the real-time temperature of the silicon anode battery is used as the judgment condition;

[0036] Figure 2 is a flowchart of the specific steps in the battery full charge determination method provided in this application embodiment when the real-time temperature of the silicon anode battery is used as the judgment condition;

[0037] Figure 3 is an overall flowchart of the battery full charge determination method provided in the embodiments of this application when the cumulative charging capacity of the battery is used as the judgment condition;

[0038] Figure 4 is a flowchart of a specific step in the battery full charge determination method provided in the embodiments of this application when the cumulative charging capacity of the battery is used as the judgment condition.

[0039] Figure 5 is a flowchart of another specific step in the battery full charge determination method provided in the embodiments of this application, when the cumulative charging capacity of the battery is used as the judgment condition.

[0040] Figure 6 is a schematic diagram of the hardware structure of an electronic device according to an embodiment of this application;

[0041] Figure 7 is a schematic diagram of the battery full charge determination device according to an embodiment of this application.

[0042] Reference numerals: 810 - memory; 820 - processor; 830 - communication interface; 840 - bus. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0044] It should be understood that although the terms first, second, etc., may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Therefore, the first component discussed below may be referred to as the second component without departing from the teachings of this application. As used herein, the term "and / or" includes all combinations of any and more of the associated listed items.

[0045] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of exemplary embodiments and may not be to scale. The modules or processes shown in the drawings are not necessarily essential for implementing this application and therefore should not be used to limit the scope of protection of this application.

[0046] Battery cells made of different materials undergo volume changes when lithium ions are released, resulting in material breakage, peeling, and deactivation, which are particularly pronounced at high temperatures and after aging. Furthermore, the degree to which battery cells made of different materials can be overcharged varies with increasing temperature or aging.

[0047] Silicon is a more promising anode material. Cells made of silicon can store ten times more lithium ions than those made of graphite, significantly increasing battery capacity and energy density. Theoretically, if the anode were made entirely of silicon, battery capacity could increase by 70%. However, silicon anodes also present some drawbacks and challenges. The main issue is the significant volume change that occurs when silicon inserts and extracts lithium ions, leading to material breakage, delamination, and deactivation. The delamination of silicon is particularly pronounced at high temperatures and after aging. Therefore, the battery charging algorithm needs to be modified to prevent excessive charge under high-temperature / aging conditions, which could cause silicon breakage, delamination, and deactivation.

[0048] Currently, during the battery charging process and when it is determined to be fully charged, high temperatures can cause the battery to be charged with too much power, leading to cell breakage, separation, and deactivation.

[0049] Taking silicon anode batteries and graphite anode batteries as examples, silicon anode batteries can charge up by about 6.5% more capacity at high temperatures, compared to 4.4% more capacity of graphite anode batteries at high temperatures. Silicon anode batteries have a higher capacity at high temperatures, so the overall charging energy at high temperatures can be reduced by increasing the full charge current of silicon anode batteries at high temperatures, thereby slowing down battery expansion.

[0050] In view of this, the present application provides a method for determining a battery full charge, which dynamically adopts different charging parameters under different temperatures / aging levels, thereby avoiding overcharging of the anode material inside the battery and extending the battery life, thus solving at least part of the above-mentioned technical problems.

[0051] It's important to note that a battery contains multiple cells connected in series. A cell is the basic building block of a battery, typically composed of multiple battery units (or battery cells) connected in series. Each cell has its own voltage, usually expressed in volts (V). The voltage of a cell depends on its chemical composition and design. The battery voltage refers to the total voltage of the entire battery, which is determined by the sum of the voltages of all the cells. When multiple cells are connected in series, their voltages are added together to obtain the total battery voltage. For example, if a battery consists of three cells, each with a voltage of 3 volts, then the total battery voltage will be 9 volts.

[0052] Please refer to Figure 1, which illustrates the overall process of the battery full charge determination method provided in this application embodiment when the real-time temperature of the silicon anode battery is used as the determination condition. The method includes the following steps:

[0053] Step 101: Obtain the real-time temperature of the battery during the charging process.

[0054] In this embodiment, the real-time temperature of the battery is used as the criterion, therefore, it is necessary to measure the real-time temperature of the battery. To obtain the real-time battery temperature, a temperature sensor can be installed inside the battery to measure the battery temperature in real time. The temperature sensor can be a thermistor, thermocouple, or other type of sensor. In this embodiment, the type of temperature sensor is not specifically limited, as long as the location of the temperature sensor accurately reflects the battery temperature. Subsequent steps can be based on the real-time battery temperature measured by the temperature sensor.

[0055] Step 102: If the real-time temperature of the battery is greater than or equal to the first temperature threshold, the full charge current of the battery is adjusted from the initial current to the first current, so as to determine the full charge of the battery based on the first current, which is greater than the initial current.

[0056] The first temperature threshold ranges from 35℃ to 40℃. Specifically, it can be any temperature or any range between two of the following: 35℃, 35.5℃, 36℃, 36.5℃, 37℃, 37.5℃, 38℃, 38.5℃, 39℃, 39.5℃, and 40℃. The initial current is the battery's default full-charge current. That is, the initial current is the current that decreases naturally as the battery capacity increases during charging, reaching the level at which the battery is considered fully charged. The first current is a set value used to determine if the battery is fully charged when its real-time temperature is greater than or equal to the first temperature threshold.

[0057] It's important to note that the full-charge current is the core parameter for determining whether a battery is fully charged. During the charging process, the charging current naturally decreases as the battery capacity increases. When it drops to a certain value, the battery is considered fully charged.

[0058] In some embodiments, the first current ranges from 0.065C to 0.085C. 0.065C represents 0.065 times the battery's design capacity, and 0.085C represents 0.085 times the battery's design capacity. That is, the first current can be any value from 0.065C, 0.075C, and 0.085C, or a range between any two values. It should be noted that the battery's design capacity refers to the electrical energy that the battery can store and release in its initial / new state, according to the manufacturer's specifications and standards. This capacity is determined by the manufacturer based on factors such as the battery's chemical composition, structural design, and process parameters. Battery design capacity is typically expressed in ampere-hours (Ah) or milliampere-hours (mAh).

[0059] Step 103: If the real-time temperature of the battery is less than the first temperature threshold, then determine whether the battery is fully charged based on the initial current.

[0060] In this context, a battery's real-time temperature below the first temperature threshold means that the battery temperature is not high, and the amount of charge received is within a reasonable range. This reasonable range refers to the amount of charge the battery can receive at its initial state and with the initial current. In other words, when the battery's real-time temperature is below the first temperature threshold, there is no need to adjust the full-charge current or reduce the overall charging capacity. It's important to note that the battery's initial state refers to its condition at the time of manufacture, i.e., brand new and unused. In the initial state, the battery's design capacity is determined according to the manufacturer's specifications and standards, representing the electrical energy the battery can store and release. Batteries in their initial state typically have optimal performance and capacity. In the initial state, the battery's charging and discharging capacities should be close to its design capacity. Charging capacity refers to the amount of charge the battery can accept, while discharging capacity refers to the amount of electricity the battery can release. These two capacities should be quite close in the initial state to ensure the battery functions properly and provides the expected electrical energy.

[0061] Therefore, when the battery's real-time temperature is greater than or equal to the first temperature threshold, it means the battery is at a high temperature, and the battery will charge more power than in its initial state. This embodiment adjusts the battery's charging current, changing the full-charge current from the initial current to the first current, thus increasing the full-charge current and reducing the overall charging capacity at high temperatures. This mitigates the risk of battery swelling and improves battery safety and performance. When the battery's real-time temperature is less than the first temperature threshold, it means the battery is not at a high temperature, and there is no need to adjust the full-charge current or reduce the overall charging capacity. In other words, this embodiment can dynamically adjust the full-charge current based on the battery temperature to mitigate battery swelling.

[0062] In some embodiments, the method of this application further includes the following steps:

[0063] Step 104: If the real-time temperature is greater than or equal to the second temperature threshold, the full charge current of the battery is adjusted from the first current to the second current, so as to determine the full charge of the battery based on the second current; the second current is greater than the first current, and the second temperature threshold is greater than the first temperature threshold.

[0064] The second temperature threshold ranges from 42℃ to 47℃, meaning it can be any temperature or a range between any two of the following: 42℃, 42.5℃, 43℃, 43.5℃, 44℃, 44.5℃, 45℃, 45.5℃, 46℃, 46.5℃, and 47℃. The second current is a set value used to determine if the battery is fully charged when its real-time temperature is greater than or equal to the second temperature threshold.

[0065] In view of this, this embodiment further reduces the overall charging capacity of the battery when the real-time temperature rises further, in order to mitigate the risk of battery swelling and improve battery safety and performance. By adjusting the full-charge current to a second current, the charging amount of the battery at high temperatures can be limited, avoiding problems such as cell breakage, stripping, and deactivation caused by overcharging.

[0066] In some embodiments, the second current ranges from 0.09C to 0.11C. 0.09C is 0.09 times the battery's design capacity, and 0.11C is 0.11 times the battery's design capacity. That is, the first current can be any value among 0.09C, 0.1C, and 0.11C, or a range between any two values.

[0067] In some embodiments, when the battery type is a silicon anode battery, the first temperature threshold is 35°C and the second temperature threshold is 45°C. Please refer to Figure 2, which illustrates the specific steps in the battery full-charge determination method provided in this application embodiment when the real-time temperature of the silicon anode battery is used as the determination condition. The specific steps of the silicon anode battery full-charge determination method are as follows:

[0068] Determine whether the real-time temperature of the silicon anode battery is greater than or equal to 45°C. If it is, adjust the full charge current of the silicon anode battery to the second current, which is 0.1C, to determine the full charge of the silicon anode battery based on the second current (0.1C). If it is not, proceed to the next step.

[0069] Determine whether the real-time temperature of the silicon anode battery is greater than or equal to 35°C. If it is, adjust the full charge current of the silicon anode battery to the first current, which is 0.075C, to determine the full charge of the silicon anode battery based on the first current (0.075C). If it is not, proceed to the next step.

[0070] The silicon anode cell operates at an initial current of 0.05C.

[0071] In some embodiments, when the battery type is a silicon anode battery, the first temperature threshold is 35°C and the second temperature threshold is 45°C. The method for determining a full charge of a silicon anode battery can also include the following steps:

[0072] Determine if the real-time temperature of the silicon anode cell is less than 35°C. If it is, the silicon anode cell will operate at the initial current of 0.05C. If not, proceed to the next step.

[0073] The full charge current of the silicon anode battery is adjusted to a first current of 0.075C, so that the silicon anode battery is fully charged based on the first current (0.075C).

[0074] When the real-time temperature of the silicon anode battery is determined to be greater than or equal to 45°C, the full charge current of the silicon anode battery is adjusted from the first current (0.075C) to the second current, which is 0.1C, so as to determine the full charge of the silicon anode battery based on the second current (0.1C).

[0075] In view of this, this embodiment can dynamically adjust the full charge current according to the temperature of the silicon anode battery, thereby achieving the purpose of slowing down battery expansion.

[0076] In some embodiments, when the battery type is a graphite anode battery, the first temperature threshold is 40°C and the second temperature threshold is 45°C. The specific steps of the graphite anode battery full charge determination method are as follows:

[0077] Determine whether the real-time temperature of the graphite anode battery is greater than or equal to 45°C. If it is, adjust the full charge current of the graphite anode battery to the second current, which is 0.1C, to determine the full charge of the graphite anode battery based on the second current (0.1C). If it is not, proceed to the next step.

[0078] Determine whether the real-time temperature of the graphite anode battery is greater than or equal to 40°C. If it is, adjust the full charge current of the graphite anode battery to the first current, which is 0.075C, and determine the full charge of the graphite anode battery based on the first current (0.075C). If it is not, proceed to the next step.

[0079] The graphite anode cell operates at an initial current of 0.05C.

[0080] In some embodiments, when the battery type is a graphite anode battery, the first temperature threshold is 40°C and the second temperature threshold is 45°C. The method for determining a full charge of a graphite anode battery can also include the following steps:

[0081] Determine if the real-time temperature of the graphite anode battery is less than 40°C. If it is, the graphite anode battery will operate at the initial current of 0.05C. If it is not, proceed to the next step.

[0082] The full charge current of the graphite anode battery is adjusted to a first current of 0.075C, so that the full charge determination of the graphite anode battery is based on the first current (0.075C).

[0083] When the real-time temperature of the graphite anode battery is determined to be greater than or equal to 45°C, the full charge current of the silicon graphite anode battery is adjusted from the first current (0.075) to the second current, which is 0.1C, so as to determine the full charge of the graphite anode battery based on the second current (0.1C).

[0084] In view of this, this embodiment can dynamically adjust the full charge current according to the temperature of the graphite anode battery, thereby achieving the purpose of slowing down battery expansion.

[0085] In some embodiments, during steps 101-104, please refer to Figure 3, which illustrates the overall flow of the battery full charge determination method provided in this application embodiment when the cumulative charging capacity of the battery is used as the determination condition. The specific steps are as follows:

[0086] Step 201: Obtain the degree of battery aging.

[0087] In this embodiment, the degree of battery aging is used as the criterion for judgment, therefore, it is necessary to obtain the degree of battery aging. The degree of battery aging can be obtained through internal resistance testing: the internal resistance of the battery is an important indicator of battery aging; by measuring the internal resistance, the degree of battery aging can be determined. Internal resistance testing can be performed using specialized testing equipment or a specific battery tester. Battery capacity testing: the battery capacity is measured through charging and discharging tests. As the battery ages, its capacity gradually decreases; by comparing the actual capacity with the initial capacity, the degree of battery aging can be assessed. The degree of battery aging can be predicted based on the number of battery cycles and the cumulative charging capacity. By testing and analyzing a large number of batteries, a relationship model between the number of cycles, the cumulative charging capacity, and the degree of battery aging can be established. Based on this model, the degree of battery aging can be assessed based on the number of battery cycles and the cumulative charging capacity.

[0088] It's important to note that cycle count refers to the number of charge-discharge cycles a battery has undergone. Each complete charge-discharge cycle causes some wear and tear on the battery, so an increase in the cycle count leads to a decrease in battery performance. By recording the battery's cycle count, the degree of battery aging can be assessed. Generally, a battery's design life specifies an expected number of cycles; exceeding this number will result in a significant decline in battery performance. Cumulative charge capacity refers to the total amount of charge a battery receives during use. As the charge capacity increases, chemical reactions within the battery cause changes and wear on the internal materials, thus affecting battery performance and lifespan. By recording the battery's cumulative charge capacity, the degree of battery aging can be assessed. Generally, a battery's design life also specifies an expected cumulative charge capacity; exceeding this capacity will result in a significant decline in battery performance.

[0089] Step 202: If the degree of aging meets the first preset condition, then charge the battery based on the initial voltage.

[0090] When the degree of aging is characterized by cumulative charging capacity, the first preset condition is that the battery's cumulative charging capacity is less than a first capacity threshold. The first capacity threshold ranges from 200 times the battery's design capacity to 400 times the battery's design capacity. The initial voltage is the battery's factory default full-charge voltage. That is, when the battery's cumulative charging capacity is less than the first capacity threshold, the charging voltage is always used to charge the battery at the initial voltage.

[0091] It's important to note that cumulative charging capacity refers to the sum of the charging capacities of all cells in a battery. During battery charging, each cell gains a certain amount of charge. Cumulative charging capacity is the value obtained by adding up the charging capacities of all cells across multiple charging cycles. Cumulative charging capacity can be used to assess the aging and lifespan of a battery. As the battery is used and undergoes charge-discharge cycles, its capacity gradually decreases, meaning its aging process increases. An increase in cumulative charging capacity indicates that the battery has received a certain amount of charge, and this value can be used to estimate the battery's lifespan and remaining capacity. Full charge voltage is the core parameter for determining whether a battery is fully charged. During charging, the battery voltage gradually increases, and when it reaches a certain value, the battery is considered fully charged.

[0092] Step 203: If the degree of aging meets the second preset condition, the charging voltage of the battery is adjusted from the initial voltage to the first voltage, so as to charge the battery based on the first voltage, which is less than the initial voltage.

[0093] When the degree of aging is characterized by cumulative charging capacity, the second preset condition is that the battery's cumulative charging capacity is greater than or equal to a first capacity threshold and less than a second capacity threshold. The second capacity threshold ranges from 500 times the battery's design capacity to 700 times the battery's design capacity. That is, when the battery's cumulative charging capacity is greater than or equal to the first capacity threshold and less than the second capacity threshold, the charging voltage is adjusted from the initial voltage to the first voltage to charge the battery. It should be noted that when the battery's cumulative charging capacity reaches 300 times the battery's design capacity, the battery is considered to have aged to a certain extent, and the charging voltage can be reduced to slow down the battery's expansion rate and capacity decay rate.

[0094] In some embodiments, the first voltage ranges from 4.45V to 4.48V. That is, the first voltage can be any one of 4.45V, 4.46V, 4.47V, and 4.48V, or a range between any two values.

[0095] In some embodiments, the method of this application further includes the following steps:

[0096] Step 204: If the degree of aging meets the third preset condition, the charging voltage of the battery is adjusted from the first voltage to the second voltage, so that the battery is charged based on the second voltage, which is less than the first voltage.

[0097] When the degree of aging is characterized by cumulative charging capacity, the third preset condition is that the battery's cumulative charging capacity is greater than or equal to the second capacity threshold. The value range of the second capacity threshold is 500 times the battery design capacity to 700 times the battery design capacity. That is, when the battery's cumulative charging capacity is greater than the second capacity threshold, the charging voltage is adjusted from the first voltage to the second voltage to charge the battery.

[0098] In some embodiments, the second voltage ranges from 4.42V to 4.45V. That is, the first voltage can be any one of 4.42V, 4.43V, 4.44V, and 4.45V, or a range between any two values.

[0099] In some embodiments, please refer to Figure 4, which illustrates a specific step flow of the battery full charge determination method provided in this application embodiment when the cumulative charging capacity of the battery is used as the determination condition. When the initial voltage is 4.5V, the first voltage is 4.45V, the second voltage is 4.44V, the first capacity threshold is 300 times the battery design capacity, and the second capacity threshold is 600 times the battery design capacity, the specific steps are as follows:

[0100] Determine whether the battery's cumulative charging capacity is greater than or equal to 600 times the battery's design capacity. If it is, charge the battery with the second voltage of 4.44V. If it is not, proceed to the next step.

[0101] Determine whether the cumulative charging capacity of the battery is greater than or equal to 300 times the design charging capacity. If it is, charge the battery with the first voltage of 4.45V. If it is not, proceed to the next step.

[0102] Determine if the battery's cumulative charging capacity is less than 300 times the design charging capacity. If it is, charge the battery with the initial voltage of 4.5V. If it is not, end the charging process.

[0103] In some embodiments, please refer to Figure 5, which illustrates another specific step flow in the battery full charge determination method provided in this application embodiment when the cumulative charging capacity of the battery is used as the determination condition. When the initial voltage is 4.5V, the first voltage is 4.45V, the second voltage is 4.44V, the first capacity threshold is 300 times the battery design capacity, and the second capacity threshold is 600 times the battery design capacity, the specific steps are as follows:

[0104] Determine if the battery's cumulative charging capacity is less than 300 times the battery's design capacity. If it is, charge the battery at the initial voltage of 4.5V. If it is not, proceed to the next step.

[0105] When the cumulative charging capacity of the battery is greater than or equal to 300 times the design charging capacity, the battery is charged with a first voltage of 4.45V.

[0106] When the cumulative charging capacity of the battery is greater than or equal to 600 times the design charging capacity, the battery is charged with a second voltage of 4.44V.

[0107] In view of this, this embodiment can dynamically adjust the full charge voltage according to the cumulative charging capacitance of the battery, thereby achieving the purpose of slowing down battery expansion.

[0108] Accordingly, this application also provides a battery full charge determination device, including:

[0109] The temperature monitoring module is used to obtain the real-time temperature of the battery during the charging process;

[0110] The first full charge current adjustment module is used to adjust the battery's full charge current from the initial current to the first current if the real-time temperature is greater than or equal to the first temperature threshold, so as to determine the battery's full charge based on the first current, wherein the first current is greater than the initial current.

[0111] The second full charge current adjustment module is used to determine whether the battery is fully charged based on the initial current if the real-time temperature is less than the first temperature threshold.

[0112] The device employs the battery full charge determination method from any of the above embodiments to determine if the battery is fully charged. Since the battery full charge determination method has been described in detail above, it will not be repeated here.

[0113] Accordingly, this application also provides an electronic device. Please refer to FIG5, which illustrates the hardware structure of an embodiment of an electronic device provided by this application. The electronic device includes a memory 810 and at least one processor 820. The memory 810 stores instructions, and the at least one processor 820 calls the instructions in the memory 810 to cause the electronic device to execute the battery full charge determination method according to any of the foregoing embodiments of this application.

[0114] Specifically, the processor 820 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0115] Memory 810 may include a large-capacity memory 810 for data or instructions. For example, and not limitingly, memory 810 may include a hard disk drive (HDD), a floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or a Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 810 may include removable or non-removable (or fixed) media. Where appropriate, memory 810 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 810 is a non-volatile solid-state memory. In a particular embodiment, memory 810 includes read-only memory (ROM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these.

[0116] In some embodiments, the electronic device may further include a communication interface 830 and a bus 840. The processor 820, memory 810, and communication interface 830 are connected via the bus 840 and communicate with each other.

[0117] The communication interface 830 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0118] Bus 840 includes hardware, software, or both, that couples components of an online data traffic metering device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a Memory 810 bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 840 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, this application contemplates any suitable bus or interconnect.

[0119] Accordingly, this application also provides a computer-readable storage medium storing a computer program thereon. The computer-readable storage medium stores one or more programs, which can be executed by one or more processors and applied to a battery cell detection system. The computer program implements the battery full charge determination method in any of the above embodiments.

[0120] It should be noted that the descriptions of the storage medium and device embodiments above are similar to the descriptions of the method embodiments above, and have similar beneficial effects. For technical details not disclosed in the storage medium and device embodiments of this application, please refer to the descriptions of the method embodiments of this application for understanding.

[0121] The aforementioned processor can be at least one of the following: Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), Central Processing Unit, Controller, Microcontroller, and Microprocessor. It is understood that other electronic devices can also implement the functions of the aforementioned processor, and this application does not specifically limit the specific implementation.

[0122] The aforementioned computer storage media / memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM), etc.; or it can be various terminals that include one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0123] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0124] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this application, the sequence numbers of the above steps / processes do not imply a sequential order of execution; the execution order of each step / process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The sequence numbers of the above embodiments of this application are merely descriptive and do not represent the superiority or inferiority of the embodiments.

[0125] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0126] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0127] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units. They may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0128] In addition, each functional unit in the various embodiments of this application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0129] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media that can store program code, such as mobile storage devices, read-only memory (ROM), magnetic disks, or optical disks.

[0130] Alternatively, if the integrated units described above are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence or the part that contributes to related technologies, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, magnetic disks, or optical disks.

[0131] The above description is merely an embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A method for determining a battery is fully charged, characterized in that, include: Obtain the real-time temperature of the battery during the charging process; If the real-time temperature is greater than or equal to the first temperature threshold, the full charge current of the battery is adjusted from the initial current to the first current, so as to determine the full charge of the battery based on the first current, wherein the first current is greater than the initial current. If the real-time temperature is less than the first temperature threshold, the battery is determined to be fully charged based on the initial current.

2. The method for determining a fully charged battery according to claim 1, characterized in that, The method further includes: If the real-time temperature is greater than or equal to the second temperature threshold, the full charge current of the battery is adjusted from the first current to the second current, so as to determine the full charge of the battery based on the second current; the second current is greater than the first current, and the second temperature threshold is greater than the first temperature threshold.

3. The method for determining a fully charged battery according to claim 2, characterized in that, When the battery type is a graphite anode battery, the first temperature threshold is 40°C and the second temperature threshold is 45°C; when the battery type is a silicon anode battery, the first temperature threshold is 35°C and the second temperature threshold is 45°C.

4. The method for determining a fully charged battery according to claim 1, characterized in that, The method further includes: To determine the degree of aging of the battery; If the degree of aging meets the first preset condition, the battery is charged based on the initial voltage; If the degree of aging meets the second preset condition, the charging voltage of the battery is adjusted from the initial voltage to a first voltage, so that the battery is charged based on the first voltage, wherein the first voltage is less than the initial voltage.

5. The method for determining a fully charged battery according to claim 4, characterized in that, The method further includes: If the degree of aging meets the third preset condition, the charging voltage of the battery is adjusted from the first voltage to the second voltage, so that the battery is charged based on the second voltage, wherein the second voltage is less than the first voltage.

6. The method for determining a fully charged battery according to claim 5, characterized in that, The degree of aging is characterized by cumulative charging capacity; Determining that the degree of aging meets the first preset condition includes: If the cumulative charging capacity is less than the first capacity threshold, then the aging degree is determined to meet the first preset condition. Determining that the degree of aging meets the second preset condition includes: If the cumulative charging capacity is greater than or equal to the first capacity threshold and less than the second capacity threshold, then the aging degree is determined to meet the second preset condition. Determining that the degree of aging meets the third preset condition includes: If the cumulative charging capacity is greater than or equal to the second capacity threshold, then the aging degree is determined to meet the third preset condition.

7. The method for determining a fully charged battery according to claim 6, characterized in that, The first capacity threshold is 200 times the battery design capacity to 400 times the battery design capacity, and the second capacity threshold is 500 times the battery design capacity to 700 times the battery design capacity.

8. A battery full charge determination device, characterized in that, include: A temperature monitoring module is used to obtain the real-time temperature of the battery during the charging process; The first full charge current adjustment module is used to adjust the full charge current of the battery from the initial current to the first current if the real-time temperature is greater than or equal to the first temperature threshold, so as to determine the full charge of the battery based on the first current, wherein the first current is greater than the initial current. The second full charge current adjustment module is used to determine whether the battery is fully charged based on the initial current if the real-time temperature is less than the first temperature threshold.

9. An electronic device, characterized in that, The electronic device includes a memory and at least one processor. The memory stores instructions, and the processor invokes the instructions in the memory to cause the electronic device to perform the steps of the battery full charge determination method as described in any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the battery full charge determination method according to any one of claims 1-7.

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