Battery mutual charging device, charging control method, apparatus, and medium

Abstract

The application discloses a battery mutual charging device, a charging control method, a device and a medium. The charging control method comprises the following steps: obtaining an initial battery voltage of a target charging battery; determining a charging voltage according to the initial battery voltage, and charging the target charging battery by using the charging voltage; obtaining an actual battery voltage of the target charging battery in a current voltage adjustment period, determining a voltage adjustment range corresponding to the voltage adjustment range according to the actual battery voltage, and determining a voltage adjustment range corresponding to the voltage adjustment range; and performing a voltage down operation on the charging voltage in the next voltage adjustment period according to the voltage adjustment range. The application can effectively improve the stability and safety of battery charging, thereby prolonging the service life of the battery.

Description

Technical Field

[0001] This invention relates to, but is not limited to, the field of battery charging control technology, and particularly to a battery mutual charging device, charging control method, apparatus, and medium. Background Technology

[0002] In battery cross-charging scenarios, the target battery needs to be charged. Charging requires applying a charging voltage to the battery port. During the charging process, excessively high voltage can overcharge and damage the battery cells, while insufficient voltage will result in slow charging. Furthermore, the environment in battery cross-charging workshops is often harsh, with severe electromagnetic interference. If the charging voltage cannot be adjusted in real time according to the target battery's voltage, overcharging or decreased charging stability may occur, ultimately reducing the target battery's lifespan. Summary of the Invention

[0003] This invention provides a battery charging device, charging control method, apparatus, and medium that can effectively improve the stability and safety of battery charging, thereby extending battery life.

[0004] In a first aspect, embodiments of the present invention provide a charging control method based on battery mutual charging, comprising: Obtain the initial battery voltage of the target rechargeable battery; Based on the initial battery voltage, the charging voltage is determined and the target rechargeable battery is charged using the charging voltage. Obtain the actual battery voltage of the target rechargeable battery in the current voltage adjustment cycle, and determine the voltage adjustment range corresponding to the voltage adjustment range based on the voltage adjustment range into which the actual battery voltage falls; Based on the voltage adjustment range, the charging voltage is reduced in the next voltage adjustment cycle.

[0005] The charging control method based on battery mutual charging according to the first aspect of the present invention has at least the following beneficial effects: Different batteries have different remaining capacities. If a fixed charging voltage is used, overcharging or slow charging can easily occur. However, determining the charging voltage based on the initial battery voltage allows the charging voltage to match the remaining capacity of the target battery. Furthermore, during battery charging, the actual battery voltage of the target battery constantly changes. If the charging voltage does not match the actual battery voltage, overcharging will occur, potentially damaging the battery. In high-interference scenarios, fluctuations in the charging voltage may also occur. Therefore, multiple voltage adjustment cycles can be set during battery charging. Then, based on the actual battery voltage of the battery in the current voltage adjustment cycle, the charging voltage is adjusted in the next voltage adjustment cycle to match the actual battery voltage, thereby improving the stability and safety of battery charging.

[0006] According to some embodiments of the first aspect of the present invention, determining the voltage adjustment range corresponding to the voltage adjustment range into which the actual battery voltage falls includes: Obtain the target battery threshold of the target rechargeable battery, and determine multiple voltage adjustment ranges based on the target battery threshold; Based on the voltage adjustment range into which the actual battery voltage falls, the voltage adjustment range corresponding to the voltage adjustment range is determined.

[0007] According to some embodiments of the first aspect of the present invention, determining the voltage adjustment range corresponding to the voltage adjustment range into which the actual battery voltage falls includes: If the actual battery voltage falls within the first voltage adjustment range, the voltage adjustment range is determined to be the first voltage. or, If the actual battery voltage falls within the second voltage adjustment range, the voltage adjustment range is determined to be the second voltage. Wherein, the upper limit of the first voltage adjustment range is less than or equal to the lower limit of the second voltage adjustment range, and the first voltage is greater than the second voltage.

[0008] According to some embodiments of the first aspect of the present invention, the charging control method further includes: If the actual battery voltage falls within the first voltage adjustment range and the charging voltage is less than or equal to the adjustment lower limit, the voltage reduction operation on the charging voltage will be stopped in the next voltage adjustment cycle. The lower limit of adjustment is determined by the target battery threshold.

[0009] According to some embodiments of the first aspect of the present invention, determining the charging voltage based on the initial battery voltage includes: The voltage rise value is determined based on the initial battery voltage and the target battery threshold. The charging voltage is determined based on the voltage rise value and the base charging voltage.

[0010] Wherein, the base charging voltage is greater than or equal to the target battery threshold.

[0011] According to some embodiments of the first aspect of the present invention, the charging control method further includes: The voltage change of the actual battery voltage is obtained. In response to the voltage change being such that the actual battery voltage continuously decreases for a preset time threshold, the voltage reduction operation on the charging voltage is stopped in the next voltage adjustment cycle.

[0012] According to some embodiments of the first aspect of the present invention, after the voltage reduction operation on the charging voltage, the method further includes: The charging current of the target rechargeable battery is obtained. When the charging current is less than a preset current threshold, the voltage reduction operation of the charging voltage is stopped in the next voltage adjustment cycle.

[0013] Secondly, embodiments of the present invention provide an operation control device for implementing the battery-based charging control method provided in the first aspect embodiment.

[0014] The operation control device according to a second aspect embodiment of the present invention has at least the following beneficial effects: Different batteries have different remaining charge levels. If a fixed charging voltage is used, overcharging or slow charging can easily occur. However, by determining the charging voltage based on the initial battery voltage, the charging voltage can be matched with the remaining charge level of the target battery. Furthermore, during battery charging, the actual battery voltage of the target battery continuously changes. If the charging voltage does not match the actual battery voltage, overcharging will occur, damaging the battery. In high-interference scenarios, fluctuations in the charging voltage may also occur. Therefore, multiple voltage adjustment cycles can be set during battery charging. Then, based on the actual battery voltage of the battery in the current voltage adjustment cycle, the charging voltage is adjusted in the next voltage adjustment cycle to match the actual battery voltage, thereby improving the stability and safety of battery charging.

[0015] Thirdly, embodiments of the present invention provide a battery charging device, including the operation control device provided in the second aspect embodiment above.

[0016] The battery charging device according to a third aspect embodiment of the present invention has at least the following beneficial effects: Different batteries have different remaining capacities. If a fixed charging voltage is used, overcharging or slow charging can easily occur. However, by determining the charging voltage based on the initial battery voltage, the charging voltage can be matched with the remaining capacity of the target battery. Furthermore, during battery charging, the actual battery voltage of the target battery constantly changes. If the charging voltage does not match the actual battery voltage, overcharging will occur, damaging the battery. In high-interference scenarios, fluctuations in the charging voltage may also occur. Therefore, multiple voltage adjustment cycles can be set during battery charging. Then, based on the actual battery voltage of the battery in the current voltage adjustment cycle, the charging voltage is adjusted in the next voltage adjustment cycle to match the actual battery voltage, thereby improving the stability and safety of battery charging.

[0017] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the battery-based charging control method as described in the first aspect embodiment above.

[0018] The computer-readable storage medium according to a fourth aspect embodiment of the present invention has at least the following beneficial effects: Different batteries have different remaining charge levels. If a fixed charging voltage is used, overcharging or slow charging can easily occur. However, determining the charging voltage based on the initial battery voltage allows the charging voltage to match the remaining charge level of the target rechargeable battery. Furthermore, during battery charging, the actual battery voltage of the target rechargeable battery constantly changes. If the charging voltage does not match the actual battery voltage, overcharging will occur, damaging the battery. In high-interference scenarios, fluctuations in the charging voltage may also occur. Therefore, multiple voltage adjustment cycles can be set during battery charging. Then, based on the actual battery voltage of the battery in the current voltage adjustment cycle, the charging voltage is adjusted in the next voltage adjustment cycle to match the actual battery voltage, thereby improving the stability and safety of battery charging.

[0019] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0021] Figure 1 A detailed flowchart of the charging control method based on battery mutual charging provided in an embodiment of the present invention; Figure 2 for Figure 1 The detailed flowchart of step S300; Figure 3 for Figure 1 A detailed flowchart of another embodiment of step S300; Figure 4 for Figure 1 A detailed flowchart of step S100; Figure 5 A block diagram of an operation control device provided in an embodiment of the present invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] It is understandable that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, or the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0024] In battery cross-charging scenarios, the target battery needs to be charged. Charging requires applying a charging voltage to the battery port. However, excessively high voltage during the charging process can overcharge and damage the battery cells, while insufficient voltage will result in slow charging. Furthermore, the environment in battery cross-charging workshops is often harsh, with severe electromagnetic interference. If the charging voltage is not adjusted according to the target battery's voltage, overcharging or decreased charging stability may occur, ultimately reducing the target battery's lifespan.

[0025] Based on this, embodiments of the present invention provide a battery mutual charging device, a charging control method, an apparatus, and a medium. Different batteries have different remaining capacities. If a fixed charging voltage is used, overcharging or slow charging can easily occur. However, determining the charging voltage based on the initial battery voltage allows the charging voltage to match the remaining capacity of the target battery. Furthermore, during battery charging, the actual battery voltage of the target battery continuously changes. If the charging voltage does not match the actual battery voltage, overcharging will occur, potentially damaging the battery. In high-interference scenarios, fluctuations in the charging voltage may also occur. Therefore, multiple voltage adjustment cycles can be set during battery charging. Then, based on the actual battery voltage in the current voltage adjustment cycle, the charging voltage is adjusted in the next voltage adjustment cycle to match the actual battery voltage, thereby improving the stability and safety of battery charging.

[0026] Reference Figure 1 , Figure 1 A detailed flowchart of the charging control method based on battery mutual charging provided in this embodiment of the invention includes, but is not limited to, the following steps: Step S100: Obtain the initial battery voltage of the target rechargeable battery; Step S200: Determine the charging voltage based on the initial battery voltage and use the charging voltage to charge the target rechargeable battery; Step S300: Obtain the actual battery voltage of the target charging battery in the current voltage adjustment cycle, and determine the voltage adjustment range corresponding to the voltage adjustment range based on the voltage adjustment range in which the actual battery voltage falls. Step S400: Based on the voltage adjustment range, the charging voltage is reduced in the next voltage adjustment cycle.

[0027] Understandably, due to varying battery usage—meaning each target rechargeable battery has a different remaining charge—charging a target battery with low remaining charge using a lower charging voltage will prolong charging time, thus affecting overall battery turnover efficiency. Conversely, charging a target battery with high remaining charge using a higher charging voltage risks overcharging and damaging the battery. Therefore, since the target battery voltage is related to its charge level, it's crucial to obtain the initial battery voltage before charging to determine the remaining charge. Based on this initial voltage, the appropriate charging voltage can be determined and applied. For example, a higher initial voltage indicates higher remaining charge, allowing for a lower charging voltage to avoid overcharging; conversely, a lower initial voltage indicates lower remaining charge, allowing for a higher charging voltage to improve charging efficiency and overall battery turnover efficiency.

[0028] It's important to note that the actual battery voltage of the target battery changes continuously during charging. If a lower charging voltage is used when the target battery's actual voltage is low, the charging time will be prolonged. Conversely, using a higher charging voltage when the target battery's actual voltage is high risks overcharging and damage. Therefore, multiple voltage adjustment cycles can be set during the charging process. Based on the actual battery voltage in the current adjustment cycle, the charging voltage is adjusted in the next cycle to match the actual battery voltage, thus improving charging stability and safety. By adjusting the charging voltage within the adjustment cycle, significant voltage fluctuations caused by frequent adjustments can be avoided, and the actual battery voltage can be tracked and adjusted to match it, thereby enhancing charging stability and safety.

[0029] Specifically, such as Figure 2 As shown, Figure 2 for Figure 1The detailed flowchart of step S300 shows that during battery charging, the voltage adjustment range can be determined based on the actual battery voltage and the voltage adjustment range it falls into. Then, in the next voltage adjustment cycle, the charging voltage is lowered to match the actual battery voltage of the target battery. When the target battery is nearly fully charged, overcharging can easily occur if the charging voltage is not precisely controlled. Therefore, if the actual battery voltage falls into the first voltage adjustment range, it indicates a large difference between the actual battery voltage and the target battery threshold, allowing for a significant adjustment of the charging voltage. If the actual battery voltage falls into the second voltage adjustment range, it indicates a small difference between the actual battery voltage and the target battery threshold, allowing for a slight adjustment of the charging voltage to avoid overcharging. By continuously adjusting the charging voltage, it can be brought closer to the target battery threshold. For example, if the actual battery voltage falls within the first voltage adjustment range, the voltage adjustment range is determined to be the first voltage; if the actual battery voltage falls within the second voltage adjustment range, the voltage adjustment range is determined to be the second voltage. Here, the target battery threshold is the voltage value when the battery is fully charged. The lower limit of the first voltage adjustment range can be the target battery threshold minus a first difference, the upper limit of the first voltage adjustment range can be the target battery threshold minus a second difference, and the lower limit of the second voltage adjustment range can be the upper limit of the first voltage adjustment range. Since the first difference is greater than the second difference, the first voltage is greater than the second voltage. Furthermore, charging the battery requires a charging voltage greater than the actual battery voltage. To ensure normal charging, if the actual battery voltage falls within the first voltage adjustment range and the charging voltage equals the lower adjustment limit, the voltage reduction operation is stopped in the next voltage adjustment cycle. The lower adjustment limit is related to the target battery threshold to avoid charging failure.

[0030] In one embodiment, the target battery threshold is 85 mV, the first difference can be 5 mV, the second difference can be 2.5 mV, the first voltage can be 2 mV, the second voltage can be 1 mV, the voltage adjustment period is 100 milliseconds, and the adjustment lower limit is 96 mV. If the overall charging time of the battery is 5 seconds, the battery charging process can consist of 50 voltage adjustment periods. If the actual battery voltage falls into the first voltage adjustment range in the 40th voltage adjustment period, and the charging voltage at this time is 100 mV, then in the 41st voltage adjustment period, a charging voltage of 98 mV is used. When the battery is being charged, if the actual battery voltage still falls within the first voltage adjustment range in the 41st voltage adjustment cycle, then in the 42nd voltage adjustment cycle, a charging voltage of 96 millivolts will be used to charge the battery. Charging the battery requires a voltage higher than the actual battery voltage. To ensure normal charging, if the actual battery voltage still falls within the first voltage adjustment range but is less than or equal to the lower adjustment limit in the 42nd voltage adjustment cycle, the current charging voltage can be maintained; that is, in the 43rd voltage adjustment cycle, a charging voltage of 96 millivolts will still be used to charge the battery. If the actual battery voltage falls within the first voltage adjustment range in the 45th voltage adjustment cycle, it indicates that the battery is about to reach the target battery threshold. Therefore, in the 46th voltage adjustment cycle, a charging voltage of 95 millivolts will be used to charge the battery. Since the battery is about to reach the target battery threshold, no lower adjustment limit needs to be set. In the 47th, 48th, 49th, and 50th voltage adjustment cycles, the charging voltage will be reduced by 1 millivolt.

[0031] It should be noted that in some embodiments, multiple voltage adjustment ranges can be divided based on the target battery threshold. For example, if the target battery threshold is 90 millivolts, three voltage adjustment ranges can be defined: the third range is 0 to 30 millivolts, the fourth range is 30 to 60 millivolts, and the fifth range is 60 to 90 millivolts. If the actual battery voltage falls within the third voltage adjustment range, it indicates that the target rechargeable battery is in the fast charging stage; therefore, no adjustment is needed. If the actual battery voltage falls within the fourth voltage adjustment range, it indicates that the target rechargeable battery is in the intermediate charging stage; therefore, the charging voltage can be decreased by 2 millivolts in each voltage adjustment cycle until the charging voltage reaches the lower adjustment limit. If the actual battery voltage falls within the fifth voltage adjustment range, it indicates that the target rechargeable battery is nearing full charge; therefore, the charging voltage can be decreased by 1 millivolt in each voltage adjustment cycle.

[0032] Specifically, such as Figure 3 As shown, Figure 3 for Figure 1A detailed flowchart of another embodiment of step S300 is provided. In one embodiment, the target rechargeable battery includes at least two battery cells. In the case of multiple cells, the target rechargeable battery is charged simultaneously, meaning that the same charging voltage is applied to all battery cells. Due to differences in production batches and material quality, the discharge amount of different battery cells during actual operation varies, resulting in different remaining capacities for each battery cell. Therefore, the actual battery voltage of all battery cells can be obtained first, and the target battery voltage can be determined based on all actual battery voltages, where the target battery voltage is the maximum value of all actual battery voltages. If the target battery voltage falls within a first voltage adjustment range, the voltage adjustment range is determined to be a first voltage; or, if the target battery voltage falls within the first voltage adjustment range, the voltage adjustment range is determined to be a second voltage. By determining the maximum value of the actual battery voltage of all battery cells as the target battery voltage, and then adjusting the charging voltage based on the target battery voltage, the risk of overcharging when falling within the first voltage adjustment range can be effectively reduced.

[0033] It should be noted that during charging, the actual battery voltage may decrease due to factors such as relaxation of the battery's internal polarization voltage, external measurement noise, poor contact, and sudden load changes. However, the voltage drop caused by relaxation of the battery's internal polarization voltage and external measurement noise is temporary. Therefore, by acquiring the actual battery voltage change, and responding when the continuous decrease in the actual battery voltage reaches a preset time threshold, the voltage adjustment operation will stop in the next voltage adjustment cycle. By setting a preset time threshold (e.g., 1 second), normal fluctuations and true anomalies can be distinguished. Only when the continuous decrease in the actual battery voltage is detected to exceed the preset time threshold is it determined that an abnormality such as poor contact or sudden load change has occurred, thereby triggering a protection action—stopping the update of the charging voltage in the next voltage adjustment cycle and maintaining a constant charging voltage. This effectively prevents misjudgments and malfunctions caused by transient interference, enhancing anti-interference capability and robustness.

[0034] It's important to note that towards the end of constant-voltage charging, as the charging voltage decreases to near the target battery threshold, the charging current naturally decreases due to the relationship between current and voltage. If the voltage continues to be mechanically reduced in predetermined steps, the amount of charge gained per unit time will decrease with the decreasing current, significantly prolonging the total charging time and causing a "tailing" phenomenon. Therefore, the charging current of the target battery can be obtained. When the charging current is less than a preset current threshold, the voltage reduction operation should be stopped in the next voltage adjustment cycle to prevent further current decrease. By monitoring the charging current, when it falls below a preset current threshold (e.g., 10mA), charging can be considered essentially complete or the charging efficiency is low. Therefore, adjusting the charging voltage can be paused, maintaining the current charging voltage, thereby effectively shortening the overall charging time and improving efficiency.

[0035] Reference Figure 4 , Figure 4 for Figure 1 The detailed flowchart of step S100 includes, but is not limited to, the following steps: Step S110: Determine the voltage rise value based on the initial battery voltage and the target battery threshold. Step S120: Determine the charging voltage based on the voltage rise value and the base charging voltage.

[0036] Understandably, due to varying battery usage, the remaining charge of each target rechargeable battery differs. If a target rechargeable battery has low remaining charge and is charged with a low charging voltage, the charging time will be prolonged, impacting overall battery turnover efficiency. A voltage rise can be determined based on the initial battery voltage and the target battery threshold. Then, the final charging voltage is determined based on this voltage rise and a base charging voltage. To ensure proper charging, the base charging voltage must be greater than or equal to the target battery threshold. If the difference between the initial battery voltage and the target battery threshold is significant, the target rechargeable battery is considered to have low remaining charge, allowing for a higher charging voltage to increase charging speed. Conversely, if the difference is small, the target rechargeable battery has high remaining charge, allowing for a lower charging voltage to avoid overcharging. Determining the charging voltage by superimposing the voltage rise on the base charging voltage ensures proper charging of the target battery and allows for dynamic adjustment of the charging voltage based on different initial battery voltages, improving both charging efficiency and battery charging safety and stability. For example, in one embodiment, if the ratio of the initial battery voltage to the target battery threshold is greater than a preset ratio, it can be considered that the battery has a large remaining capacity. In this case, the voltage rise value can be 20 millivolts, that is, the charging voltage is the base charging voltage plus 20 millivolts, to avoid overcharging the battery. If the ratio of the initial battery voltage to the target battery threshold is less than the preset ratio, it can be considered that the battery has a small remaining capacity. In this case, the voltage rise value can be 150 millivolts, that is, the charging voltage is the base charging voltage plus 150 millivolts, to improve the charging speed of the battery. The preset ratio can be 85%, and the preset ratio can also be adjusted according to the actual application. This invention does not specifically limit the preset ratio. For example, in one embodiment, the voltage rise value can also be adjusted according to the ratio of the initial battery voltage to the target battery threshold. The smaller the ratio of the initial battery voltage to the target battery threshold, the smaller the remaining battery capacity, and a higher charging voltage can be used to charge the battery to increase the charging speed. For example, if the ratio of the initial battery voltage to the target battery threshold is 10%, the voltage rise value can be 180 millivolts; if the ratio is 20%, the voltage rise value can be 160 millivolts; if the ratio is 30%, the voltage rise value can be 140 millivolts; if the ratio is 40%, the voltage rise value can be 120 millivolts; and if the ratio is 50%, the voltage rise value can be 100 millivolts. By adjusting the voltage rise value in a stepwise manner, the charging voltage can be matched with the initial battery voltage.

[0037] In one embodiment, the target rechargeable battery includes at least two battery cells. In the case of multiple cells, the target rechargeable battery is charged simultaneously, meaning all battery cells are charged with the same voltage. Due to differences in production batches and material quality, the discharge capacity of different battery cells varies during actual operation, resulting in different remaining capacities for each cell. Therefore, the initial battery voltage of all battery cells can be obtained first, and the target initial voltage can be determined based on these initial voltages. The target initial voltage is the maximum value of all initial battery voltages. This effectively reduces the risk of overcharging.

[0038] Secondly, referring to Figure 5 This invention provides an operation control device 500, including a memory 510, a processor 520, and a computer program stored in the memory 510 and executable on the processor 520. The processor 520 executes the program to implement the battery-based charging control method of the first aspect embodiment described above, for example, executing... Figure 1 Method steps S100 to S500 and Figure 4 The method steps S110 to S120.

[0039] The memory 510, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs, including the battery-interoperable charging control method in the above embodiments of the present invention. The processor 520 implements the battery-interoperable charging control method in the above embodiments of the present invention by running the non-transitory software program and instructions stored in the memory 510.

[0040] The memory 510 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data required for executing the battery-based charging control method described in the above embodiments. Furthermore, the memory 510 may include high-speed random access memory 510, and may also include non-transitory memory 510, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. It should be noted that the memory 510 may include remotely located memories 510 relative to the processor 520, and these remote memories 510 can be connected to the terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0041] Thirdly, embodiments of the present invention provide a battery charging device, which includes an operation control device 500 as described in the second aspect embodiment. Different batteries have different remaining capacities. If a fixed charging voltage is used, overcharging or slow charging can easily occur. However, by determining the charging voltage based on the initial battery voltage, the charging voltage can be matched with the remaining capacity of the target battery. Furthermore, the actual battery voltage changes continuously during battery charging. If the charging voltage does not match the actual battery voltage, overcharging will occur, damaging the battery. In high-interference scenarios, fluctuations in the charging voltage may also occur. Therefore, multiple voltage adjustment cycles can be set during battery charging. Based on the actual battery voltage in the current voltage adjustment cycle, the charging voltage is adjusted in the next voltage adjustment cycle to match the actual battery voltage, thereby improving the stability and safety of battery charging.

[0042] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing computer-executable instructions for causing a computer to perform the battery-based charging control method of the first aspect embodiment above, for example, executing... Figure 1 Method steps S100 to S400 and Figure 4 The method steps S110 to S120 are described above. Those skilled in the art will understand that all or some of the steps and systems disclosed in the above methods can be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all physical components can be implemented as processors, such as central processing units, digital signal processors, or microprocessors executing software, or as hardware, or as integrated circuits, such as application-specific integrated circuits (ASICs). Such software can be distributed on a computer-readable medium, which can include computer storage media or non-transitory media and communication media or transient media. As is known to those skilled in the art, computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc DVD or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information transmission medium.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The above is a detailed description of the preferred embodiments of the present invention. However, the present invention is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of the present invention.

Claims

1. A charging control method based on battery mutual charging, characterized in that, The charging control method includes: Obtain the initial battery voltage of the target rechargeable battery; Based on the initial battery voltage, the charging voltage is determined and the target rechargeable battery is charged using the charging voltage. Obtain the actual battery voltage of the target rechargeable battery in the current voltage adjustment cycle, and determine the voltage adjustment range corresponding to the voltage adjustment range based on the voltage adjustment range into which the actual battery voltage falls; Based on the voltage adjustment range, the charging voltage is reduced in the next voltage adjustment cycle.

2. The charging control method according to claim 1, characterized in that, The step of determining the voltage adjustment range corresponding to the voltage adjustment range into which the actual battery voltage falls includes: Obtain the target battery threshold of the target rechargeable battery, and determine multiple voltage adjustment ranges based on the target battery threshold; Based on the voltage adjustment range into which the actual battery voltage falls, the voltage adjustment range corresponding to the voltage adjustment range is determined.

3. The charging control method according to claim 1, characterized in that, The step of determining the voltage adjustment range corresponding to the voltage adjustment range into which the actual battery voltage falls includes: If the actual battery voltage falls within the first voltage adjustment range, the voltage adjustment range is determined to be the first voltage. or, If the actual battery voltage falls within the second voltage adjustment range, the voltage adjustment range is determined to be the second voltage. Wherein, the upper limit of the first voltage adjustment range is less than or equal to the lower limit of the second voltage adjustment range, and the first voltage is greater than the second voltage.

4. The charging control method according to claim 3, characterized in that, The charging control method further includes: If the actual battery voltage falls within the first voltage adjustment range and the charging voltage is less than or equal to the adjustment lower limit, the voltage reduction operation on the charging voltage will be stopped in the next voltage adjustment cycle. The lower limit of adjustment is determined by the target battery threshold.

5. The charging control method according to claim 1, characterized in that, Determining the charging voltage based on the initial battery voltage includes: The voltage rise value is determined based on the initial battery voltage and the target battery threshold. The charging voltage is determined based on the voltage rise value and the base charging voltage; Wherein, the base charging voltage is greater than or equal to the target battery threshold.

6. The charging control method according to claim 1, characterized in that, The charging control method further includes: The voltage change of the actual battery voltage is obtained. In response to the voltage change being such that the actual battery voltage continuously decreases for a preset time threshold, the voltage reduction operation on the charging voltage is stopped in the next voltage adjustment cycle.

7. The charging control method according to claim 1, characterized in that, After performing the voltage reduction operation on the charging voltage, the method further includes: The charging current of the target rechargeable battery is obtained. When the charging current is less than a preset current threshold, the voltage reduction operation of the charging voltage is stopped in the next voltage adjustment cycle.

8. An operation control device, characterized in that, The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the battery-based charging control method as described in any one of claims 1 to 7.

9. A battery charging device, characterized in that, Includes the operation control device as described in claim 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions for causing a computer to perform a battery-based charging control method for a battery as described in any one of claims 1 to 7.

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