A battery charging control method, device and battery

Abstract

This invention discloses a battery charging control method, apparatus, and battery, comprising: controlling the battery to sequentially undergo constant current and constant voltage charging, and acquiring the battery's charging current and real-time voltage; when the battery is in the constant voltage charging stage, correcting the remaining battery capacity based on the charging current, real-time voltage, and the time the battery has been in the constant voltage charging stage; when the remaining battery capacity correction is complete, controlling the battery to enter the float charging stage to maintain the battery in a fully charged state. The battery charging control method, apparatus, and battery provided by this invention can ensure that the battery is fully charged, prevent the battery from being partially fully charged or undercharged, thereby improving the battery's range.

Description

Technical Field

[0001] The embodiments of the present invention relate to internal resistance detection technology, and more particularly to a battery charging control method, device and battery. Background Technology

[0002] Batteries, such as lithium batteries, are widely used in many fields and are an important energy source for the normal operation of equipment that requires power. To ensure that batteries can supply power to electrical equipment normally, the battery charging process needs to be reliably controlled.

[0003] Currently, existing battery charging control methods typically charge the battery with a constant high current to quickly increase the battery voltage. Once the voltage reaches a preset cutoff voltage, the system switches to a constant voltage charging mode, where the charging current gradually decreases as the battery capacity increases until charging is complete. This charging control method has the problem that although the battery voltage has reached the cutoff voltage, the internal electrochemical reaction of the battery is not fully completed, and the actual capacity is not fully charged, resulting in a "false full" phenomenon that leads to a significant decrease in battery range. Summary of the Invention

[0004] This invention provides a battery charging control method, device, and battery to ensure that the battery is fully charged and to prevent the battery from being partially fully charged or undercharged, thereby improving the battery's range.

[0005] In a first aspect, embodiments of the present invention provide a battery charging control method, comprising: The battery is controlled to undergo constant current and constant voltage charging in sequence, and the charging current and real-time voltage of the battery are obtained. When the battery is in the constant voltage charging stage, the remaining capacity of the battery is corrected based on the charging current, the real-time voltage, and the time the battery is in the constant voltage charging stage. When the remaining charge of the battery is corrected, the battery is controlled to enter the float charging stage to keep the battery fully charged. The step of correcting the remaining battery capacity based on the charging current, the real-time voltage, and the time the battery spends in the constant-voltage charging phase includes: If the real-time voltage is greater than the preset full charge voltage, and the charging current is less than the preset current value for a duration of a preset duration, then the remaining charge of the battery is corrected to the first preset value. If the battery remains in the constant voltage charging phase for a period of time exceeding a preset threshold, the remaining battery power will be adjusted to a second preset value.

[0006] Optionally, the control battery is subjected to constant current and constant voltage charging sequentially, including: The battery is charged with a constant current using a preset current, and the battery voltage is collected in real time. When the battery voltage rises to a preset cutoff voltage, the battery is controlled to be charged with a constant voltage.

[0007] Optionally, the first preset value and the second preset value may be the same or different.

[0008] Optionally, the preset threshold is 5 minutes, the preset duration is 5 seconds, the preset current value is 2.5A, and both the first preset value and the second preset value are 100%.

[0009] Optionally, controlling the battery to enter the float charging stage includes: The battery is controlled to perform maintenance charging at a preset float charging voltage to compensate for the battery's self-discharge loss.

[0010] Optionally, the preset float charge voltage is 3.5V.

[0011] Optionally, the charging current during constant current charging of the battery is 0.5C-1C.

[0012] In a second aspect, embodiments of the present invention provide a battery charging control device, comprising: a sensor and a controller, wherein the sensor is electrically connected to the controller, and the battery charging control method described in the first aspect is executed by the controller.

[0013] Thirdly, embodiments of the present invention provide a battery, to which the battery charging control method described in the first aspect is applied.

[0014] Optionally, the battery is a lithium battery.

[0015] The battery charging control method, apparatus, and battery provided in this invention include: controlling the battery to sequentially perform constant current and constant voltage charging, and acquiring the battery's charging current and real-time voltage; when the battery is in the constant voltage charging stage, correcting the remaining battery capacity based on the charging current, real-time voltage, and the time the battery is in the constant voltage charging stage; when the battery's remaining capacity correction is complete, controlling the battery to enter the float charging stage to keep the battery in a fully charged state; correcting the remaining battery capacity based on the charging current, real-time voltage, and the time the battery is in the constant voltage charging stage includes: if the real-time voltage is greater than a preset full charge voltage and the charging current is less than a preset current value for a duration reaching a preset duration, then correcting the remaining battery capacity to a first preset value; if the time the battery is in the constant voltage charging stage exceeds a preset threshold, then correcting the remaining battery capacity to a second preset value. The battery charging control method, device, and battery provided in this embodiment of the invention correct the remaining battery capacity based on the charging current, real-time voltage, and the time the battery is in the constant voltage charging stage. If the real-time voltage is greater than the preset full charge voltage and the charging current is less than the preset current value for a continuous period of time, the remaining battery capacity is corrected to a first preset value. If the time the battery is in the constant voltage charging stage exceeds a preset threshold, the remaining battery capacity is corrected to a second preset value to ensure that the battery is fully charged, prevent the battery from being falsely full or undercharged, thereby improving the battery's range. Attached Figure Description

[0016] Figure 1 This is a flowchart of a battery charging control method provided in Embodiment 1 of the present invention; Figure 2 This is a flowchart of a battery charging control method provided in Embodiment 2 of the present invention; Figure 3 This is a structural block diagram of a battery charging control device provided in Embodiment 3 of the present invention; Figure 4 This is a schematic diagram of the structure of a terminal provided in Embodiment 5 of the present invention. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0018] Example 1 Figure 1This is a flowchart of a battery charging control method provided in Embodiment 1 of the present invention. This embodiment can be applied to battery charging control, etc. The method can be executed by a controller in a battery charging control device. The controller can be implemented in software and / or hardware. The method specifically includes the following steps: Step 110: Control the battery to perform constant current and constant voltage charging in sequence, and obtain the charging current and real-time voltage of the battery.

[0019] Specifically, the battery is charged by first performing constant current charging and then constant voltage charging. In one embodiment, the controller is electrically connected to both a current sensor and a voltage sensor to acquire the battery's charging current and voltage in real time during the constant current and constant voltage charging processes.

[0020] Step 120: When the battery is in the constant voltage charging stage, adjust the remaining battery capacity based on the charging current, real-time voltage, and the time the battery has been in the constant voltage charging stage.

[0021] Specifically, during the constant-voltage charging phase, the remaining battery capacity is adjusted if either a first condition or a second condition is met. The first condition is that the battery voltage is greater than a preset full-charge voltage, and the charging current is less than a preset current value for a preset duration. The second condition is that the battery remains in the constant-voltage charging phase for a preset threshold time. In one embodiment, the remaining battery capacity is adjusted to a first preset value when the first condition is met, and to a second preset value when the second condition is met. The first and second preset values ​​may be the same or different. For example, both the first and second preset values ​​are 100%.

[0022] Step 130: When the remaining battery power is corrected, control the battery to enter the float charging stage to keep the battery fully charged.

[0023] Specifically, when the remaining battery power is corrected, the battery is controlled to switch charging modes, such as controlling the battery to continuously charge with a voltage and a small current lower than the preset full charge voltage. At this time, the battery is in the float charging stage to maintain the battery in a fully charged state.

[0024] It should be noted that the values ​​of each preset parameter in this embodiment can be determined according to the actual charging control requirements, and are not limited here.

[0025] The battery charging control method provided in this embodiment includes: controlling the battery to sequentially undergo constant current and constant voltage charging, and acquiring the battery's charging current and real-time voltage; when the battery is in the constant voltage charging stage, correcting the remaining battery capacity based on the charging current, real-time voltage, and the time the battery is in the constant voltage charging stage; when the remaining battery capacity correction is complete, controlling the battery to enter the float charging stage to maintain the battery in a fully charged state. The battery charging control method provided in this embodiment corrects the remaining battery capacity based on the charging current, real-time voltage, and the time the battery is in the constant voltage charging stage. If the real-time voltage is greater than a preset full-charge voltage, and the charging current is less than a preset current value for a duration exceeding a preset duration, then the remaining battery capacity is corrected to a first preset value. If the time the battery is in the constant voltage charging stage exceeds a preset threshold, then the remaining battery capacity is corrected to a second preset value to ensure the battery is fully charged, prevent incomplete charging or undercharging, thereby improving battery life.

[0026] Example 2 Figure 2 This is a flowchart of a battery charging control method provided in Embodiment 2 of the present invention. This embodiment can be applied to battery charging control, etc. The method can be executed by a controller in a battery charging control device. The controller can be implemented in software and / or hardware. The method specifically includes the following steps: Step 210: Charge the battery with a preset current and collect the battery voltage in real time until the battery voltage rises to the preset cutoff voltage, then control the battery to charge at a constant voltage.

[0027] In one implementation, the preset current range is 0.5C-1C, meaning the charging current during constant current charging is 0.5C-1C. Here, C represents the battery charging rate, which is the current required to charge the battery to its rated capacity within a specified time. Its value is equal to the ratio of the charging current to the battery's rated capacity; 1C means the battery is fully charged in 1 hour, and 0.5C corresponds to 2 hours. For example, the preset cutoff voltage range is 0.05V-1V. Furthermore, the controller is electrically connected to both a current sensor and a voltage sensor to acquire the battery's charging current and voltage in real time during constant current and constant current charging processes.

[0028] Step 220: When the battery is in the constant voltage charging stage, if the real-time voltage is greater than the preset full charge voltage and the charging current is less than the preset current value for a continuous period of time, then the remaining battery power is corrected to the first preset value.

[0029] In one embodiment, the preset full charge voltage of a single battery cell is 3.65V, the preset current value is 2.5A, and the preset duration is 5s. Specifically, when the battery is in the constant voltage charging stage, if the real-time voltage is greater than the preset full charge voltage (e.g., 3.65V) and the charging current is less than the preset current value (e.g., 2.5A) for a duration of 5s or more, the remaining battery capacity is adjusted to a first preset value (e.g., 100%).

[0030] Step 230: If the battery is in the constant voltage charging stage for a period of time exceeding a preset threshold, the remaining battery power is adjusted to a second preset value.

[0031] For example, the preset threshold is 5 minutes. Specifically, if the battery is in the constant voltage charging stage for more than the preset threshold, even if the conditions in step 240 above are not met, the remaining battery power will be corrected to a second preset value, such as 100%.

[0032] Step 240: Control the battery to perform maintenance charging at a preset float charging voltage to compensate for the battery's self-discharge loss.

[0033] For example, the preset float charging voltage is 3.5V. When the remaining battery power is corrected, the battery is controlled to charge at the preset float charging voltage, and the battery switches from constant voltage charging to float charging stage to compensate for the battery's self-discharge loss and maintain the battery in a fully charged state.

[0034] It should be noted that the values ​​of each parameter in this embodiment are only for illustrative purposes and should be determined according to actual charging control requirements, and are not limited here.

[0035] The battery charging control method provided in this embodiment includes: charging the battery with a preset current at a constant current and collecting the battery voltage in real time until the battery voltage rises to a preset cutoff voltage, and then controlling the battery to charge at a constant voltage; when the battery is in the constant voltage charging stage, if the real-time voltage is greater than the preset full charge voltage and the charging current is less than the preset current value for a duration of a preset duration, then the remaining battery capacity is corrected to a first preset value; if the battery is in the constant voltage charging stage for a duration exceeding a preset threshold, then the remaining battery capacity is corrected to a second preset value; when the remaining battery capacity correction is completed, the battery is controlled to perform maintenance charging at a preset float charge voltage to compensate for the battery's self-discharge loss. The battery charging control method provided in this embodiment, through a sequential control approach of constant current, constant voltage, remaining charge correction, and float charging, can accurately determine the true full charge state of the battery, correct the remaining charge to a first or second preset value, solve the problems of false full charge and undercharge, eliminate polarization interference, ensure the battery is truly fully charged, improve the battery system's range, and simultaneously improve the accuracy of power display, battery cycle life, and charging efficiency. It also avoids damage to the battery from prolonged undercharging and reduces battery capacity decay. The method standardizes the charging process, switching to float charging mode after full charge correction, protecting the battery while maintaining its full charge state. The control logic is simple and easy to implement, adaptable to various low-voltage lithium battery charging scenarios, and parameters can be flexibly adjusted. Only software logic optimization is required, without modifying existing charging hardware, reducing implementation costs and ensuring high mass production feasibility. The charging process is more rational: the constant voltage stage eliminates the need to wait for the current to return to zero for an extended period, improving charging efficiency; the float charging stage effectively compensates for battery self-discharge, maintaining the battery at full charge.

[0036] Example 3 Figure 3 This is a battery charging control device provided in Embodiment 3 of the present invention. (See reference) Figure 3 The battery charging control device includes a sensor 10 and a controller 20. The sensor 10 and the controller 20 are electrically connected. The battery charging control method described in any embodiment of the present invention is executed by the controller. The sensor 10 includes a current sensor and a voltage sensor. The controller 20 collects the battery current and voltage through the current sensor and voltage sensor, respectively. The specific process of the controller 20 in controlling the battery charging can be referred to in any of the above embodiments, and will not be repeated here.

[0037] In one implementation, the controller is an MCU (Microcontroller Unit), which is the core control module responsible for coordinating sensors and actuators to achieve key functions such as battery control, including battery charging control. The MCU supports high-speed signal sampling and real-time algorithm computation, with decision latency controlled within 100ms to meet immediate response requirements. The MCU core can be a 32-bit ARM processor, and the MCU's clock frequency can be greater than 48MHz, balancing low power consumption and computational requirements. The MCU's flash memory storage capacity can be greater than 64KB to store control programs and user habits, while the ARM processor's storage capacity can be greater than 8KB. The MCU's peripheral interfaces may include multi-channel analog-to-digital converter interfaces, PWM (Pulse Width Modulation) output interfaces, Bluetooth interfaces, etc. The MCU's low-power mode current in standby mode can be less than 10μA, and its operating current can be less than 50mA, matching lithium battery power. The MCU's operating temperature can be 0~60℃, and it is resistant to microwave radiation interference (shielded design). The MCU can utilize the STM32G0 series, which features low power consumption, small package size, and integrated communication functions. This meets the size and battery life requirements of portable devices, balancing low power consumption with multi-protocol communication, and adapting to APP integration needs. The MCU is equipped with an analog-to-digital conversion interface. This interface receives analog signals, which the MCU then converts and processes before processing.

[0038] Furthermore, MCUs offer advantages such as high integration, strong controllability, and wide adaptability, making them a crucial component of battery charging control devices. An MCU integrates the CPU core, memory, and peripheral interfaces onto a single chip, eliminating the need for complex additional control circuits. A single MCU can replace a combination of independent processors, signal acquisition chips, and driver chips, resulting in a smaller battery charging control device that meets portability requirements. MCUs support multi-dimensional real-time control, resolving the issue of excessive standby current affecting the normal operation of the battery charging control device. The MCU's power consumption and environmental adaptability can flexibly match device requirements, balancing battery life and stable operation. The controller uses a low-power MCU with a standby current as low as below 10μA, enabling more than 20 uses on a single charge when paired with a lithium battery. During operation, the MCU dynamically adjusts its main frequency to reduce power consumption while maintaining processing speed.

[0039] In addition, the aforementioned battery charging control device further includes: a constant current and constant voltage control module 310, a power correction module 320, and a float charging control module 330; wherein, the constant current and constant voltage control module 310 is used to control the battery to sequentially perform constant current and constant voltage charging, and to acquire the battery's charging current and real-time voltage; the power correction module 320 is used to correct the remaining power of the battery based on the charging current, real-time voltage, and the time the battery has been in the constant voltage charging stage; the float charging control module 330 is used to control the battery to enter the float charging stage when the remaining power correction is completed, so as to keep the battery in a fully charged state. The constant current and constant voltage control module 310, the power correction module 320, and the float charging control module 330 are integrated in the controller.

[0040] Based on the above implementation method, the constant current and constant voltage control module 310 is specifically used to charge the battery with a preset current and collect the battery voltage in real time until the battery voltage rises to the preset cutoff voltage, and then control the battery to charge with constant voltage.

[0041] In one embodiment, the power correction module 320 includes: The first correction unit is used to correct the remaining battery capacity to 100% if the real-time voltage is greater than the preset full charge voltage and the charging current is less than the preset current value for a preset duration. The second correction unit is used to correct the remaining battery capacity to 100% if the battery is in the constant voltage charging stage for a period of time exceeding a preset threshold.

[0042] Optionally, the float charge control module 330 is specifically used to control the battery to perform maintenance charging at a preset float charge voltage to compensate for the battery's self-discharge loss.

[0043] The battery charging control device provided in this embodiment belongs to the same inventive concept as the battery charging control method provided in any embodiment of the present invention, and has corresponding beneficial effects. For technical details not covered in this embodiment, please refer to the battery charging control method provided in any embodiment of the present invention.

[0044] Example 4 This embodiment also provides a battery, to which the battery charging control method described in any embodiment of the present invention is applied.

[0045] Optional, the battery is a lithium battery.

[0046] Specifically, lithium batteries include low-voltage lithium batteries and high-voltage lithium batteries. The battery in this embodiment can be a low-voltage lithium battery. A lithium battery is a rechargeable chemical battery with lithium as its core element. It stores and releases energy through the reversible insertion / extraction of lithium ions between the positive and negative electrodes. It possesses core advantages such as high energy density, long cycle life, low self-discharge, and no memory effect, making it the mainstream power source in current consumer electronics, new energy vehicles, and energy storage fields. A lithium battery mainly consists of five parts: a positive electrode, a negative electrode, an electrolyte, a separator, and a casing. The positive electrode of the lithium battery is coated with lithium compounds such as lithium iron phosphate or ternary aluminum foil, which determines the battery voltage and capacity. The negative electrode of the lithium battery is coated with copper foil made of graphite / silicon carbon material, storing lithium ions during charging. The electrolyte of the lithium battery is composed of lithium salts and organic solvents, responsible for lithium ion conduction. The separator of the lithium battery is a porous polymer membrane that isolates the positive and negative electrodes to prevent short circuits while allowing lithium ions to pass through. The casing of the lithium battery is an aluminum / steel shell that protects the internal structure and is explosion-proof and temperature-resistant. Lithium-ion batteries operate on a reversible electrochemical reaction involving the insertion and extraction of lithium ions. During charging, lithium ions are extracted from the positive electrode, pass through the electrolyte and separator, and insert into the negative electrode, making the negative electrode lithium-rich. During discharging, lithium ions are extracted from the negative electrode and return to the positive electrode. Electrons then flow through the external circuit to form an electric current, converting chemical energy into electrical energy. Lithium-ion batteries boast high energy density, long cycle life (over 2000 cycles), reducing replacement costs; no memory effect, allowing for charging and discharging at any time without full discharge; low self-discharge (less than 1% per month), retaining charge even after long-term storage; and environmentally friendly, containing no heavy metals such as lead and mercury, and are recyclable. Therefore, lithium-ion batteries are widely used in various fields, including consumer electronics (mobile phones, laptops, tablets, headphones, power banks), new energy vehicles, energy storage, and industrial applications such as power tools, drones, medical equipment, and model aircraft.

[0047] The battery provided in this embodiment belongs to the same inventive concept as the battery charging control method provided in any embodiment of the present invention and has corresponding beneficial effects. For technical details not covered in this embodiment, please refer to the battery charging control method provided in any embodiment of the present invention.

[0048] Example 5 Figure 4 This is a schematic diagram of the structure of a terminal provided in Embodiment 5 of the present invention. Figure 4 A block diagram of an exemplary device 412 suitable for implementing embodiments of the present invention is shown. Figure 4 The device 412 shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of the present invention.

[0049] like Figure 4As shown, device 412 is represented as a general-purpose device. Components of device 412 may include, but are not limited to: one or more processors 416, storage device 428, and bus 418 connecting different system components (including storage device 428 and processor 416).

[0050] Bus 418 represents one or more of several bus architectures, including a memory device bus or memory device controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. Examples of these architectures include, but are not limited to, the Industry Subversive Alliance (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0051] Device 412 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by device 412, including volatile and non-volatile media, removable and non-removable media.

[0052] Storage device 428 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 430 and / or cache memory 432. Device 412 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 434 may be used to read and write non-removable, non-volatile magnetic media (… Figure 4 Not shown; usually referred to as a "hard drive"). Although Figure 4As not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disc drive for reading and writing to a removable non-volatile optical disc, such as a Compact Disc Read-Only Memory (CD-ROM), a Digital Video Disc Read-Only Memory (DVD-ROM), or other optical media. In these cases, each drive may be connected to bus 418 via one or more data media interfaces. Storage device 428 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of the present invention.

[0053] A program / utility 440 having a set (at least one) of program modules 442 may be stored in, for example, a storage device 428. Such program modules 442 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 442 typically perform the functions and / or methods described in the embodiments of the present invention.

[0054] Device 412 can also communicate with one or more external devices 414 (e.g., keyboard, pointing terminal, display 424, etc.), and with one or more terminals that enable a user to interact with device 412, and / or with any terminal that enables device 412 to communicate with one or more other computing terminals (e.g., network card, modem, etc.). This communication can be performed via input / output (I / O) interface 422. Furthermore, device 412 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 420. Figure 4 As shown, network adapter 420 communicates with other modules of device 412 via bus 418. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with device 412, including but not limited to: microcode, terminal drivers, redundant processors, external disk drive arrays, Redundant Arrays of Independent Disks (RAID) systems, tape drives, and data backup storage systems.

[0055] The processor 416 executes various functional applications and data processing by running programs stored in the storage device 428, such as implementing the battery charging control method provided in the embodiments of the present invention, which includes: The battery is controlled to undergo constant current and constant voltage charging in sequence, and the charging current and real-time voltage of the battery are acquired. When the battery is in the constant voltage charging stage, the remaining battery capacity is adjusted based on the charging current, real-time voltage, and the time the battery is in the constant voltage charging stage. Once the remaining battery charge has been corrected, the battery enters the float charging phase to keep it fully charged.

[0056] Example 6 Embodiment 6 of the present invention provides a computer-readable storage medium storing a computer program thereon. When executed by a controller, the program implements the battery charging control method provided in the embodiments of the present invention, the method comprising: The battery is controlled to undergo constant current and constant voltage charging in sequence, and the charging current and real-time voltage of the battery are acquired. When the battery is in the constant voltage charging stage, the remaining battery capacity is adjusted based on the charging current, real-time voltage, and the time the battery is in the constant voltage charging stage. Once the remaining battery charge has been corrected, the battery enters the float charging phase to keep it fully charged.

[0057] The computer storage medium of this invention can be any combination of one or more computer-readable media. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0058] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0059] The program code contained on a computer-readable medium may be transmitted using any suitable medium, including—but not limited to—wireless, wire, optical fiber, RF, etc., or any suitable combination thereof.

[0060] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or terminal. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0061] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, rearrangements, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A battery charging control method, characterized in that, include: The battery is controlled to undergo constant current and constant voltage charging in sequence, and the charging current and real-time voltage of the battery are obtained. When the battery is in the constant voltage charging stage, the remaining capacity of the battery is corrected based on the charging current, the real-time voltage, and the time the battery is in the constant voltage charging stage. When the remaining charge of the battery is corrected, the battery is controlled to enter the float charging stage to keep the battery fully charged. The step of correcting the remaining battery capacity based on the charging current, the real-time voltage, and the time the battery spends in the constant-voltage charging phase includes: If the real-time voltage is greater than the preset full charge voltage, and the charging current is less than the preset current value for a duration of a preset duration, then the remaining charge of the battery is corrected to the first preset value. If the battery remains in the constant voltage charging phase for a period of time exceeding a preset threshold, the remaining battery power will be adjusted to a second preset value.

2. The battery charging control method according to claim 1, characterized in that, The control battery is sequentially charged under constant current and constant voltage, including: The battery is charged with a constant current using a preset current, and the battery voltage is collected in real time. When the battery voltage rises to a preset cutoff voltage, the battery is controlled to be charged with a constant voltage.

3. The battery charging control method according to claim 1, characterized in that, The first preset value and the second preset value may be the same or different.

4. The battery charging control method according to claim 1, characterized in that, The preset threshold is 5 minutes, the preset duration is 5 seconds, the preset current value is 2.5A, and both the first preset value and the second preset value are 100%.

5. The battery charging control method according to claim 1, characterized in that, The control of the battery to enter the float charging stage includes: The battery is controlled to perform maintenance charging at a preset float charging voltage to compensate for the battery's self-discharge loss.

6. The battery charging control method according to claim 5, characterized in that, The preset float charge voltage is 3.5V.

7. The battery charging control method according to claim 1, characterized in that, The charging current of the battery during constant current charging is 0.5C-1C.

8. A battery charging control device, characterized in that, include: A sensor and a controller, wherein the sensor is electrically connected to the controller, and the battery charging control method as described in any one of claims 1-7 is executed by the controller.

9. A battery, characterized in that, The battery charging control method as described in any one of claims 1-7 is applied to the battery.

10. The battery according to claim 9, characterized in that, The battery is a lithium battery.

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