A method, device and equipment for charging rescue of an aging battery

Abstract

Embodiments of the present application disclose a charging rescue method, device and equipment for an aging battery. The method comprises: monitoring the charging state of the aging battery in the fast charging stage; resetting a power management integrated circuit (PMIC) chip and controlling to enter a slow charging mode when the aging battery is in a stop charging state; determining a current fast charging current limit value in the fast charging mode based on a first fast charging current limit value set based on the maximum application current limit value in the fast charging mode after the last PMIC chip reset and a preset fast charging rescue strategy; and setting the maximum application current limit value as the current fast charging current limit value when it is monitored that the slow charging mode enters the fast charging mode. By using the present application, the battery of the electronic equipment can continue to be charged in the fast charging mode after aging, and the problem that the battery cannot be fast charged after aging is solved.

Description

Technical Field

[0001] This invention relates to the field of battery charging technology, and in particular to a method, apparatus, and equipment for charging and rescuing aging batteries. Background Technology

[0002] As smartphone batteries age over time, they gradually degrade, leading to issues like charging stopping or slow charging. To prevent this, manufacturers have proposed optimization solutions. Some of these solutions reduce battery capacity as the number of battery cycles increases, while others use smoothing techniques to avoid display anomalies. However, these solutions all optimize the interface by reducing battery usage time and do not truly address the problem of batteries stopping charging and failing to recharge properly due to aging. Summary of the Invention

[0003] The present invention aims to provide a method, apparatus, and device for charging and rescuing aging batteries, so as to solve the problem of batteries being unable to be charged after aging in the prior art.

[0004] To address the aforementioned technical problems, the embodiments of the present invention provide the following technical solutions:

[0005] According to one aspect of the present invention, a method for recharging and rescuing an aging battery is provided, the method comprising:

[0006] Monitor the charging status of aging batteries during the fast charging phase;

[0007] When the aging battery is detected to be in a stopped charging state, the power management integrated circuit (PMIC) chip is reset, and the charging state machine is controlled to enter a slow charging mode for the aging battery.

[0008] The system obtains the first fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode after the last PMIC chip reset. Based on the first fast charging current limit and the preset fast charging rescue strategy, the system determines the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode this time. The current fast charging current limit is less than or equal to the first fast charging current limit.

[0009] The charging state machine is monitored. When it is detected that the charging state machine changes the charging of the aging battery from slow charging mode to fast charging mode, the maximum requested current limit is set to the current fast charging current limit so that the aging battery can be fast charged under the current fast charging current limit.

[0010] Optionally, the method includes:

[0011] The battery cycle count is obtained using a battery fuel gauge;

[0012] If the number of cycles is greater than a preset cycle number threshold, the battery is determined to be an aged battery, and the charging status of the aged battery during the fast charging phase is monitored.

[0013] Optionally, the method includes:

[0014] The current value of the aged battery during the fast charging phase is periodically monitored. If the number of consecutive negative values ​​of the current value exceeds a preset threshold, the aged battery is determined to be in a stopped charging state.

[0015] Optionally, the control of the charging state machine to enter slow charging mode for the aging battery includes:

[0016] The maximum application current limit is set to a preset slow charging current limit to control the charging state machine to enter slow charging mode for the aging battery.

[0017] Optionally, the step of obtaining the first fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode after the last PMIC chip reset, and determining the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode this time based on the first fast charging current limit and the preset fast charging rescue strategy, includes:

[0018] The system retrieves the first fast charging current limit set for the maximum requested current limit when the PMIC chip was last reset and the system entered fast charging mode from slow charging mode, the number of completed rescues corresponding to the first fast charging current limit, and the maximum number of rescues corresponding to the first fast charging current limit.

[0019] If the number of completed rescues corresponding to the first fast charging current limit is equal to the maximum number of rescues corresponding to the first fast charging current limit, and the first fast charging current limit is not the preset minimum fast charging current limit, then based on the preset fast charging rescue strategy, the second fast charging current limit located after the first fast charging current limit is obtained, the second fast charging current limit is determined as the current fast charging current limit set for the maximum requested current limit when entering the fast charging mode from the slow charging mode, and the number of completed rescues corresponding to the second fast charging current limit is incremented by one;

[0020] If the number of completed rescues corresponding to the first fast charging current limit is less than the maximum number of rescues corresponding to the first fast charging current limit, then the first fast charging current limit is determined as the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode, and the number of completed rescues corresponding to the first fast charging current limit is incremented by one.

[0021] Optionally, the method further includes:

[0022] If the number of completed rescues corresponding to the first fast charging current limit is equal to the maximum number of rescues corresponding to the first fast charging current limit, and the first fast charging current limit is the minimum limit of the fast charging current, then the charging state machine is controlled to enter a continuous slow charging mode for the aging battery until charging is completed.

[0023] Optionally, the maximum number of rescues corresponding to the second fast charging current limit is greater than or equal to the maximum number of rescues corresponding to the first fast charging current limit.

[0024] According to another aspect of the present invention, a charging and rescue device for aging batteries is provided, the device comprising:

[0025] The charging status monitoring module is used to monitor the charging status of aging batteries during the fast charging phase.

[0026] The charging chip reset module is used to reset the power management integrated circuit (PMIC) chip and control the charging state machine to enter the slow charging mode when the charging state monitoring module detects that the aging battery is in a stopped charging state.

[0027] The fast charging current determination module is used to obtain the first fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode after the last PMIC chip reset, and to determine the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode this time based on the first fast charging current limit and the preset fast charging rescue strategy. The current fast charging current limit is less than or equal to the first fast charging current limit.

[0028] The fast charging control module is used to monitor the operation of the charging state machine. When it is detected that the charging state machine changes the charging of the aging battery from slow charging mode to fast charging mode, the maximum requested current limit is set to the current fast charging current limit so that the aging battery can be fast charged under the current fast charging current limit.

[0029] According to another aspect of the present invention, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory and running thereon, wherein the processor executes the program to implement the steps of the charging and recovery method for aging batteries described in any of the preceding claims.

[0030] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing a computer program, which, when executed by a processor, performs the charging and recovery method for aging batteries as described in any of the preceding claims.

[0031] The beneficial effects of this invention are as follows: Unlike existing technologies, this invention monitors the charging status of the aging battery during the fast charging phase. When the aging battery is detected to be in a stopped charging state, the power management integrated circuit (PMIC) chip is reset, and the charging state machine is controlled to enter a slow charging mode for the aging battery. Based on the first fast charging current limit set for the maximum requested current limit when transitioning from slow charging mode to fast charging mode after the last PMIC chip reset and a preset fast charging rescue strategy, the current fast charging current limit set for the maximum requested current limit when transitioning from slow charging mode to fast charging mode is determined. When the charging state machine detects that the aging battery has transitioned from slow charging mode to fast charging mode, the maximum requested current limit is set to the current fast charging current limit, allowing the aging battery to perform fast charging under the current fast charging current limit. By employing this invention, through multiple resets and rescues of the aging battery, and limiting the maximum requested current limit when re-entering fast charging, the electronic device's battery can continue charging in fast charging mode even after aging, solving the problem of batteries being unable to fast charge after aging. Attached Figure Description

[0032] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0033] Figure 1 This is a flowchart of an optional charging and rescue method for aging batteries provided in Embodiment 1 of the present invention;

[0034] Figure 2 This is a schematic diagram of an optional charging and rescue device for aging batteries provided in Embodiment 2 of the present invention;

[0035] Figure 3 This is a schematic diagram of an optional electronic device provided in Embodiment 3 of the present invention. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The technical solutions of the exemplary embodiments disclosed in this invention can be applied to application scenarios of charging batteries installed on electronic devices. In the exemplary embodiments described below, the electronic device is sometimes also referred to as a smart terminal device. The electronic device involved in this disclosure can be a mobile terminal, user equipment (UE), mobile station (MS), etc. Specific examples may include: mobile phones, tablet computers, laptops, handheld computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in autonomous driving, wireless terminals in remote surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, etc.

[0038] This invention provides a method for rescuing aging batteries by resetting the battery multiple times and limiting the maximum requested current when re-entering fast charging mode. This allows electronic devices to continue charging in fast charging mode even after the battery has aged, solving the problem of batteries being unable to fast charge after aging. The technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Example 1

[0040] According to embodiments of the present invention, a method for charging and rescuing aging batteries is provided. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than that shown here.

[0041] Please see Figure 1 , Figure 1 The diagram shows an optional charging and recovery method for aging batteries according to Embodiment 1 of the present invention. This method is applied to the various electronic devices described above. The method includes:

[0042] Step S101: Monitor the charging status of the aging battery during the fast charging phase.

[0043] The present invention provides a charging recovery solution for aging batteries. For non-aging batteries, the original charging solution in the electronic device is continued. Generally, the electronic device includes a battery fuel gauge, which can obtain the number of battery cycles. When the number of cycles exceeds a preset cycle count threshold, such as 500, the battery is determined to be an aging battery.

[0044] In some embodiments of the present invention, when a fast charging head is used to fast charge an aging battery in an electronic device, the current value of the aging battery during the fast charging phase is monitored to determine whether the aging battery is in a stopped charging state.

[0045] Step S102: When the aging battery is detected to be in a stopped charging state, the power management integrated circuit (PMIC) chip is reset, and the charging state machine is controlled to enter a slow charging mode for the aging battery.

[0046] In some embodiments of the present invention, the current value of the aged battery during the fast charging phase is periodically monitored. If the number of consecutive negative current values ​​exceeds a preset threshold, the aged battery is determined to be in a stopped-charging state. For example, if four consecutive periodic monitoring sessions reveal negative current values, the aged battery is determined to be in a stopped-charging state.

[0047] When the aging battery is detected to be in a stopped charging state, the PMIC (Power Management IC) charging chip is reset, thus resuming charging after it has stopped. It should be noted that this reset is a software reset; the charging adapter and the battery in the electronic device remain connected. After resetting the PMIC chip, the maximum requested charging current limit is set to a preset slow charging current limit. This slow charging current limit is less than or equal to the slow charging reference current limit. To ensure that the charging state machine enters slow charging mode for the aging battery, the slow charging current limit can be set to a value lower than the slow charging reference current limit. For example, if the slow charging reference current limit is 2A, then the slow charging current limit is set to 1.8A.

[0048] Step S103: Obtain the first fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode after the last PMIC chip reset; determine the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode this time based on the first fast charging current limit and the preset fast charging rescue strategy.

[0049] As batteries age, their charging resistance increases. If the maximum requested current limit in normal fast charging mode is still used, the floating voltage will be too high, causing charging to stop. To avoid this, the solution provided by this invention is to limit the maximum requested current limit in fast charging mode and attempt fast charging multiple times using current limits lower than the normal fast charging mode limit until charging is complete. For example, assuming the maximum requested current limit in normal fast charging is 8.7A, during the recovery process, the maximum requested current limit for the aged battery entering fast charging mode will be set to multiple values ​​lower than 8.7A, such as 8A, 6A, 5A, etc., and fast charging will be attempted sequentially until fully charged.

[0050] To balance charging efficiency, this invention employs a preset fast-charging recovery strategy to repeatedly reset and recover aging batteries during charging recovery. As the number of recovery attempts increases, the current fast-charging current limit set for the maximum requested current limit gradually decreases until it reaches a preset minimum fast-charging current limit. This minimum fast-charging current limit can be set based on a slow-charging reference current limit; for example, if the slow-charging reference current limit is 2A, the minimum fast-charging current limit can be set to 2.5A.

[0051] In some embodiments of the present invention, multiple maximum number of rescue attempts are set based on the same fast charging current limit, and different fast charging current limits can correspond to different maximum number of rescue attempts. Generally, the larger the fast charging current limit, the fewer the corresponding maximum number of rescue attempts. For example, a fast charging rescue strategy is: 8A / 2 times, 6A / 3 times, 5A / 3 times, 4A / 4 times, 3.75A / 4 times, 3A / 5 times, 2.5A / 5 times, for a total of 26 rescue attempts.

[0052] In some embodiments of the present invention, the method for determining the current fast charging current limit during each rescue phase includes: obtaining a first fast charging current limit set for the maximum requested current limit when switching from slow charging mode to fast charging mode after the last PMIC chip reset, the number of completed rescues corresponding to the first fast charging current limit, and the maximum number of rescues corresponding to the first fast charging current limit; if the number of completed rescues corresponding to the first fast charging current limit is equal to the maximum number of rescues corresponding to the first fast charging current limit, and the first fast charging current limit is not a preset minimum fast charging current limit, then a second fast charging current limit located after the first fast charging current limit is obtained based on a preset fast charging rescue strategy, and the second fast charging current limit is determined as the current fast charging current limit for the current rescue phase after switching from slow charging mode. The current fast charging current limit is set for the maximum requested current limit when entering fast charging mode. If the number of completed rescues corresponding to the first fast charging current limit is less than the maximum number of rescues corresponding to the first fast charging current limit, then the first fast charging current limit is determined as the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode, and the number of completed rescues corresponding to the first fast charging current limit is incremented by one. If the number of completed rescues corresponding to the first fast charging current limit is equal to the maximum number of rescues corresponding to the first fast charging current limit, and the first fast charging current limit is the minimum fast charging current limit, then the charging state machine is controlled to enter a continuous slow charging mode for the aging battery until charging is completed. Wherein, the current fast charging current limit is less than or equal to the first fast charging current limit.

[0053] The following example, using fast charging rescue strategies of 8A / 2 times, 6A / 3 times, 5A / 3 times, 4A / 4 times, 3.75A / 4 times, 3A / 5 times, and 2.5A / 5 times, illustrates the method for determining the current fast charging current limit. If this is the first time resetting the PMIC chip, the first fast charging current limit at the time of the last PMIC chip reset, the number of rescues completed corresponding to the first fast charging current limit, and the maximum number of rescues corresponding to the first fast charging current limit are all 0. In this case, the first fast charging current limit obtained based on the preset fast charging rescue strategy is used as the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode, i.e., the current fast charging current limit is 8A. If this is the third PMIC chip reset, the first fast charging current limit at the time of the last PMIC chip reset was 8A, the number of completed rescues corresponding to the first fast charging current limit was 2, and the maximum number of rescues corresponding to the first fast charging current limit was 2. Therefore, the fast charging current limit corresponding to the third rescue is used as the current fast charging current limit set for the maximum requested current limit when transitioning from slow charging mode to fast charging mode, i.e., the current fast charging current limit is 6A, and the number of completed rescues corresponding to 6A is incremented by one. If this is the twenty-seventh PMIC chip reset, the first fast charging current limit is 2.5A, the number of completed rescues corresponding to 2.5A is 5, the maximum number of rescues corresponding to 2.5A is also 5, and 2.5A is the minimum fast charging current limit. That is, if the last rescue based on the fast charging rescue strategy still fails, the maximum requested current limit is set as the slow charging current limit, and the charging state machine is controlled to enter a continuous slow charging mode for the aging battery until charging is complete.

[0054] Step S104: Monitor the operation of the charging state machine. When the charging state machine detects that the charging of the aging battery has changed from slow charging mode to fast charging mode, set the maximum requested current limit to the current fast charging current limit so that the aging battery can be fast charged under the current fast charging current limit.

[0055] The charging rescue solution of this invention is an optimized version of the original charging solution, while also being compatible with it. In the original charging mechanism, the charging state machine flows based on the charging strategy. When the conditions for transitioning from slow charging mode to fast charging mode are met, the charging state machine switches the charging of the aging battery from slow charging mode to fast charging mode. The charging rescue solution of this invention monitors the flow of the charging state machine. When it detects that the charging state machine has switched the charging of the aging battery from slow charging mode to fast charging mode, it sets the maximum requested current limit to the current fast charging current limit, so that the aging battery can be fast charged under the current fast charging current limit. Thus, one rescue operation for the aging battery is completed. Then, returning to step S101, the charging status of the aging battery in this fast charging stage is monitored. If the aging battery is detected to be fully charged, the charging ends; if the aging battery is detected to be in a stopped charging state, the next rescue is initiated until it is fully charged or all rescue attempts under the preset fast charging rescue strategy have been exhausted. When all rescue attempts have been exhausted, the maximum requested current limit is set to the slow charging current limit, and the charging state machine is controlled to enter a continuous slow charging mode for the aging battery until charging is completed.

[0056] The charging recovery method for aging batteries provided in this invention monitors the charging status of the aging battery during the fast charging phase. When the aging battery is detected to be in a stopped charging state, the power management integrated circuit (PMIC) chip is reset, and the charging state machine is controlled to enter a slow charging mode for the aging battery. Based on the first fast charging current limit set for the maximum requested current limit when the PMIC chip was reset from slow charging mode to fast charging mode last time, and a preset fast charging recovery strategy, the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode this time is determined. When the charging state machine is detected to enter fast charging mode from slow charging mode, the maximum requested current limit is set to the current fast charging current limit, so that the aging battery can be fast charged under the current fast charging current limit. By using the solution of this invention, by resetting the aging battery multiple times and limiting the maximum requested current limit when re-entering fast charging, the battery of the electronic device can still continue to be charged in fast charging mode after aging, solving the problem that the battery cannot be fast charged after aging.

[0057] Example 2

[0058] According to embodiments of the present invention, a charging and rescue device for aging batteries is provided, such as... Figure 2 The diagram shown is a schematic representation of an optional charging and rescue device for aging batteries according to Embodiment 2 of the present invention. The charging and rescue device 200 for aging batteries includes:

[0059] The charging status monitoring module 202 is used to monitor the charging status of the aging battery during the fast charging phase.

[0060] The charging chip reset module 204 is used to reset the power management integrated circuit (PMIC) chip and control the charging state machine to enter the slow charging mode when the charging state monitoring module 202 detects that the aging battery is in a stopped charging state.

[0061] The fast charging current determination module 206 is used to obtain the first fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode after the last PMIC chip reset, and to determine the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode this time based on the first fast charging current limit and the preset fast charging rescue strategy. The current fast charging current limit is less than or equal to the first fast charging current limit.

[0062] The fast charging control module 208 is used to monitor the operation of the charging state machine. When it is detected that the charging state machine changes the charging of the aging battery from slow charging mode to fast charging mode, the maximum requested current limit is set to the current fast charging current limit so that the aging battery can be fast charged under the current fast charging current limit.

[0063] The above-described device can perform the charging and rescue method for aging batteries as described in any one of Embodiment 1, and has the corresponding functional modules and beneficial effects of the method. For technical details not described in detail in this embodiment, please refer to the charging and rescue method for aging batteries provided in Embodiment 1 of the present invention.

[0064] Example 3

[0065] According to embodiments of the present invention, an electronic device is provided, such as... Figure 3The diagram shown is a schematic diagram of an optional electronic device provided in Embodiment 3 of the present invention. The electronic device may include a processor 301, a communication interface 302, a memory 303, and a communication bus 304, wherein the processor 301, the communication interface 302, and the memory 303 communicate with each other through the communication bus 304. The processor 301 can call logic instructions in the memory 303 to execute a charging rescue method for an aging battery. This method includes: monitoring the charging state of the aging battery during the fast charging phase; when the aging battery is detected to be in a stopped charging state, resetting the power management integrated circuit (PMIC) chip and controlling the charging state machine to enter a slow charging mode for the aging battery; obtaining a first fast charging current limit set for the maximum requested current limit when the PMIC chip was last reset and the battery transitioned from slow charging mode to fast charging mode; determining a current fast charging current limit set for the maximum requested current limit when the battery transitions from slow charging mode to fast charging mode based on the first fast charging current limit and a preset fast charging rescue strategy, wherein the current fast charging current limit is less than or equal to the first fast charging current limit; monitoring the operation of the charging state machine; and when the charging state machine detects that the battery transitions from slow charging mode to fast charging mode, setting the maximum requested current limit to the current fast charging current limit so that the aging battery can be fast charged under the current fast charging current limit.

[0066] Furthermore, the logical instructions in the aforementioned memory 303 can be implemented as software functional units and sold or used as independent products, and can be stored in several computer-readable storage media. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. The 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 steps of any of the methods described in Embodiment 1 of the present invention. The aforementioned storage media include: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0067] It is understood that the electronic device also includes a rechargeable battery and a program for managing the charging of the rechargeable battery.

[0068] The above-mentioned product can perform any of the charging and rescue methods for aging batteries described in Embodiment 1, and has the corresponding functional modules and beneficial effects of the method. For technical details not described in detail in this embodiment, please refer to the charging and rescue method for aging batteries provided in Embodiment 1 of this invention.

[0069] Example 4

[0070] According to an embodiment of the present invention, a computer-readable storage medium of the type described in Embodiment 3 is provided. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the processor performs the steps of the charging and rescue method for aging batteries described in Embodiment 1.

[0071] The above-mentioned product can perform the charging and rescue method for aging batteries as described in any one of Embodiment 1, and has the corresponding functional modules and beneficial effects of the method. For technical details not described in detail in this embodiment, please refer to the charging and rescue method for aging batteries provided in Embodiment 1 of the present invention.

[0072] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented using software plus a general-purpose hardware platform, or of course, using hardware. Based on this understanding, the above technical solutions, in essence or the parts that contribute to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to enable a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; under the concept of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A method of charge rescue of an aged battery, characterized by, The method comprises: monitoring the charging state of the aging battery in the fast charging stage; when it is monitored that the aging battery is in the charging stop state, resetting a power management integrated circuit (PMIC) chip and controlling a charging state machine to enter a slow charging mode for charging the aging battery; obtaining a first fast charging current limit value set for a maximum application current limit value when entering the fast charging mode from the slow charging mode after the last PMIC chip reset, a completed rescue number corresponding to the first fast charging current limit value, and a maximum rescue number corresponding to the first fast charging current limit value, determining a current fast charging current limit value set for the maximum application current limit value when entering the fast charging mode from the slow charging mode this time based on the first fast charging current limit value and a preset fast charging rescue strategy, the current fast charging current limit value being less than or equal to the first fast charging current limit value; monitoring the flow of the charging state machine, and when it is monitored that the charging state machine enters the fast charging mode from the slow charging mode for charging the aging battery, setting the maximum application current limit value as the current fast charging current limit value, so that the aging battery fast charges under the current fast charging current limit value; wherein determining the current fast charging current limit value set for the maximum application current limit value when entering the fast charging mode from the slow charging mode this time based on the first fast charging current limit value and the preset fast charging rescue strategy specifically comprises: if the completed rescue number corresponding to the first fast charging current limit value is equal to the maximum rescue number corresponding to the first fast charging current limit value, when the first fast charging current limit value is not a preset minimum fast charging current limit value, obtaining a second fast charging current limit value located after the first fast charging current limit value based on the preset fast charging rescue strategy, determining the second fast charging current limit value as the current fast charging current limit value set for the maximum application current limit value when entering the fast charging mode from the slow charging mode this time, and adding one to the completed rescue number corresponding to the second fast charging current limit value; when the first fast charging current limit value is the minimum fast charging current limit value, controlling the charging state machine to enter a continuous slow charging mode for charging the aging battery; if the completed rescue number corresponding to the first fast charging current limit value is less than the maximum rescue number corresponding to the first fast charging current limit value, determining the first fast charging current limit value as the current fast charging current limit value set for the maximum application current limit value when entering the fast charging mode from the slow charging mode this time, and adding one to the completed rescue number corresponding to the first fast charging current limit value.

2. The method of claim 1, wherein, The method comprises: obtaining the cycle number of the battery through a battery power meter; if the cycle number is greater than a preset cycle number threshold, determining that the battery is an aging battery, and monitoring the charging state of the aging battery in the fast charging stage.

3. The method of claim 1, wherein, The method comprises: periodically monitoring the current value of the aging battery in the fast charging stage, and if the number of consecutive negative values of the current value is greater than a preset negative value number threshold, determining that the aging battery is in the charging stop state.

4. The method of claim 1, wherein, The control of the charging state machine to enter the slow charging mode for charging the aging battery comprises: The maximum application current limit is set to a preset slow charging current limit to control the charging state machine to enter slow charging mode for the aging battery.

5. The method of claim 1, wherein, The maximum number of rescues corresponding to the second fast charging current limit is greater than or equal to the maximum number of rescues corresponding to the first fast charging current limit.

6. A charging rescue device for an aging battery, characterized by, The device includes: The charging status monitoring module is used to monitor the charging status of aging batteries during the fast charging phase. The charging chip reset module is used to reset the power management integrated circuit (PMIC) chip and control the charging state machine to enter the slow charging mode when the charging state monitoring module detects that the aging battery is in a stopped charging state. The fast charging current determination module is used to obtain the first fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode after the last PMIC chip reset, the number of completed rescues corresponding to the first fast charging current limit, and the maximum number of rescues corresponding to the first fast charging current limit. Based on the first fast charging current limit and the preset fast charging rescue strategy, the module determines the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode this time. The current fast charging current limit is less than or equal to the first fast charging current limit. The fast charging control module is used to monitor the operation of the charging state machine. When it is detected that the charging state machine changes the charging of the aging battery from slow charging mode to fast charging mode, the maximum requested current limit is set to the current fast charging current limit so that the aging battery can be fast charged under the current fast charging current limit. Specifically, the current fast charging current limit set for the maximum requested current limit when transitioning from slow charging mode to fast charging mode based on the first fast charging current limit and the preset fast charging rescue strategy includes: If the number of completed rescues corresponding to the first fast charging current limit is equal to the maximum number of rescues corresponding to the first fast charging current limit, and when the first fast charging current limit is not the preset minimum fast charging current limit, then based on the preset fast charging rescue strategy, a second fast charging current limit located after the first fast charging current limit is obtained, and the second fast charging current limit is determined as the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode, and the number of completed rescues corresponding to the second fast charging current limit is incremented by one; when the first fast charging current limit is the minimum fast charging current limit, then the charging state machine is controlled to enter a continuous slow charging mode for charging the aging battery; If the number of completed rescues corresponding to the first fast charging current limit is less than the maximum number of rescues corresponding to the first fast charging current limit, then the first fast charging current limit is determined as the current fast charging current limit set for the maximum requested current limit when entering fast charging mode from slow charging mode, and the number of completed rescues corresponding to the first fast charging current limit is incremented by one.

7. An electronic device comprising a memory, a processor, and a computer program stored on the memory to run on the processor, characterized in that, When the processor executes the program, it implements the steps of the charging and recovery method for aging batteries as described in any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, performs the steps of the charging and recovery method for an aging battery as described in any one of claims 1-5.

Images