WO2023179255A1 - 一种充电装置、方法及相关设备 - Google Patents

一种充电装置、方法及相关设备 Download PDF

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Publication number
WO2023179255A1
WO2023179255A1 PCT/CN2023/076385 CN2023076385W WO2023179255A1 WO 2023179255 A1 WO2023179255 A1 WO 2023179255A1 CN 2023076385 W CN2023076385 W CN 2023076385W WO 2023179255 A1 WO2023179255 A1 WO 2023179255A1
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WIPO (PCT)
Prior art keywords
voltage
charging
preset
battery module
value
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Application number
PCT/CN2023/076385
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English (en)
French (fr)
Inventor
胡章荣
杨杰
杨天宇
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华为技术有限公司
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Publication of WO2023179255A1 publication Critical patent/WO2023179255A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage

Definitions

  • the present application relates to the technical field of battery charging, and in particular, to a charging device, method and related equipment.
  • the constant voltage charging stage refers to the charging voltage of the charging power supply for the battery that remains constant during the charging time of this stage (this value can be understood as the voltage value of the charging voltage), and as the charging time increases, the battery module power gradually decreases. increases, the voltage of the battery module also gradually increases close to the charging voltage.
  • the constant voltage charging stage when the charging current is less than the preset current value, the battery can be considered to be fully charged, and the charging process is terminated.
  • the charging voltage is inconsistent with the preset full charging voltage of the battery (i.e., the ideal value of the voltage when the battery is fully charged), it will cause the battery's final charge level to be different from the ideal value after the battery is stopped charging.
  • the full capacity is inconsistent.
  • the actual voltage exceeds the preset full charge voltage, it may not only cause energy waste and damage the battery, but may also cause the battery to explode; if the actual voltage is less than the preset full charge voltage, the battery may not be able to full of problems, which in turn affects battery life. For example: Taking the lithium battery commonly used in mobile phones as an example, based on the full charge voltage, for every 10mV decrease, the battery capacity is reduced by approximately 1%, and the battery life is also reduced.
  • Embodiments of the present application provide a charging device, method and related equipment, which relate to the technical field of battery charging and can calibrate the charging voltage in the constant voltage charging stage to ensure the battery life and power safety of electronic equipment.
  • inventions of the present application provide a charging device for use in electronic equipment.
  • the electronic equipment includes a battery module, and the battery module corresponds to a constant voltage charging stage during the charging process.
  • the device includes: a charging control unit and a processing unit. unit; the above-mentioned charging control unit is used to output a preset first voltage to the above-mentioned battery module during the above-mentioned constant voltage charging stage; the above-mentioned processing unit is used to obtain the second voltage of the above-mentioned battery module during the above-mentioned constant voltage charging stage.
  • the charging control unit is configured to adjust the preset first voltage based on the adjustment information, and output a third voltage to the battery module, where the third voltage is the adjusted first voltage.
  • the existing adjustment method often calibrates the battery charging voltage below the preset full charge voltage, and due to the existing adjustment method The influence of factors such as board-level stress, temperature, and device aging on the constant voltage charging voltage cannot be eliminated.
  • embodiments of the present application provide a charging device, which is used in the field of battery charging technology and can adjust the charging voltage in the constant voltage charging stage to ensure the battery life and power safety of electronic equipment.
  • the charging device includes: a charging control unit and a processing unit, wherein the charging control unit can output a preset first voltage to the battery module during the constant voltage charging stage (the preset first voltage is the charging control unit based on the preset Assume the full charging voltage is the voltage output to the battery module).
  • the above-mentioned processing unit is equivalent to a processing unit, a processing chip or a system-on-a-chip (SOC) in electronic equipment.
  • SOC system-on-a-chip
  • the voltage value of the voltage (the voltage value of the second voltage is equivalent to the actual charging voltage value received by the battery module when the charging control unit outputs the currently preset first voltage to the battery module); based on the voltage value of the second voltage, Obtain the adjustment information corresponding to the above-mentioned preset first voltage; the above-mentioned charging control unit can also adjust the preset first voltage in the constant voltage charging stage according to the above-mentioned adjustment information, and output a third voltage (the third voltage) to the above-mentioned battery module.
  • the third voltage is the adjusted first voltage), so that when the charging control unit outputs the third voltage to the battery module, the actual charging voltage received by the battery module is closer to the preset full charging voltage, which improves the charging accuracy of the battery.
  • the preset full charging voltage will not be exceeded.
  • the charging voltage of the current battery module can be adjusted according to the influence of various factors in the actual charging process (i.e., constant voltage charging in the embodiment of the present application
  • the charging voltage of the battery module will change during each stage), which not only avoids the influence of factors such as board-level stress, temperature, device aging, etc. on the actual charging process of the battery module, but also allows the charging voltage to be adjusted in time during the charging cycle, so that it is The battery in the current charging cycle can reach the ideal charging state, avoiding the situation of discovering that the battery is not fully charged or even the charging voltage is too high after charging is completed. Therefore, embodiments of the present application can adjust the actual charging voltage of the battery module during the constant voltage charging stage to ensure the battery life of the electronic device.
  • the voltage value of the third voltage is greater than the voltage value of the preset first voltage.
  • the voltage value of the third voltage is greater than the preset voltage value of the first voltage, that is, correspondingly, when the charging control unit outputs the third voltage to the battery module, the actual charging voltage value received by the battery module It should be greater than the actual charging voltage value received by the battery module when the current preset first voltage is output to the battery module. Therefore, after charging the battery module with the third voltage, the capacity of the fully charged battery module is higher than that of the fully charged battery module after charging the battery module with the preset first voltage, which is greatly enhanced. Battery life of electronic devices.
  • the charging device further includes a detection unit; the detection unit is configured to detect the voltage value of the second voltage and send it to the processing unit.
  • the charging device further includes a detection unit.
  • the detection unit (such as a high-precision detection device) can be used to detect the voltage value of the second voltage.
  • the detection unit may be located inside the charging control unit, inside the processing unit or coupled to the battery module independently of the charging control unit and the processing unit.
  • the above-mentioned detection unit is a fuel gauge; the above-mentioned fuel gauge is used to detect the voltage value of the above-mentioned second voltage and send it to the above-mentioned processing unit.
  • the detection unit can be a fuel gauge in an electronic device.
  • the fuel gauge is used to measure relevant parameters of the battery module (such as battery charging current, actual battery charging voltage, etc.). Therefore, the fuel gauge can detect The voltage value of the above-mentioned second voltage is sent to the above-mentioned processing unit. By utilizing existing devices in the electronic device to detect the voltage value of the second voltage, electronic device hardware space and cost are saved.
  • the above-mentioned fuel gauge is used to operate when the temperature corresponding to the above-mentioned electronic device is at a preset temperature.
  • the voltage value of the above-mentioned second voltage is detected and sent to the above-mentioned processing unit.
  • the adjustment information includes a first adjustment amount
  • the first adjustment amount is a difference between a voltage value of the second voltage and a preset voltage value.
  • the adjustment information is adjustment information for a preset first voltage
  • the preset voltage value is a voltage value of a preset full charge voltage. If it is determined that the battery module receives the preset first voltage, If the actual charging voltage does not reach the preset full charging voltage, the preset first voltage can be adjusted according to the preset full charging voltage, so that the actual charging voltage (second voltage) received by the battery module is also increased to Preset full charging voltage. For example: if the preset first voltage is increased by 10mV, the actual charging voltage (second voltage) received by the battery module will also increase by 10mV.
  • the adjustment information corresponding to the preset first voltage is obtained.
  • the battery module based on the magnitude relationship between the voltage value of the second voltage (the voltage value of the actual charging voltage) and the preset voltage value corresponding to the battery module, it is determined and adjusted to adjust the preset first voltage, so that the battery can finally The power at the end of charging is closer to the ideal battery full capacity, thereby improving the battery's endurance. Moreover, safety hazards caused by the actual charging voltage being greater than the preset full charging voltage of the battery can be avoided, ensuring charging safety during the charging cycle.
  • the processing unit is specifically configured to: obtain voltage values of the second voltage corresponding to multiple time points respectively; and compare the voltage values of the second voltage corresponding to each of the multiple time points.
  • the voltage difference between the voltage values of the two voltages and the above-mentioned preset voltage value is obtained, and the voltage difference corresponding to each time point in the multiple time points is obtained; based on the voltage corresponding to each time point in the multiple time points, The difference value determines the adjustment information.
  • the adjustment information for calibrating the charging voltage is determined based on the difference between the obtained voltage values of the plurality of second voltages and the above-mentioned preset voltage value, which can reduce the error when only one charging voltage value is obtained. This makes the adjusted charging voltage more accurate during the subsequent calibration process. Wherein, the time interval between every two adjacent time points in multiple time points is equal.
  • the above-mentioned detection unit is also used to detect the current value of the first current and send it to the above-mentioned processing unit, wherein the above-mentioned first current is the value of the above-mentioned battery module under the above-mentioned preset first voltage.
  • the above-mentioned processing unit is specifically configured to determine the above-mentioned adjustment information based on the voltage value of the above-mentioned second voltage and the current value of the first current.
  • the detection unit is not only used to detect the voltage value of the charging voltage corresponding to the battery module under the current preset first voltage (the voltage value of the second voltage), but also is used to detect the current value of the current first current.
  • the processing unit may also determine the above-mentioned adjustment information based on the obtained voltage value of the second voltage and the current value of the first current.
  • the detection unit can also be a fuel gauge.
  • the adjustment information includes a second adjustment amount
  • the second adjustment amount is the change amount of the preset first voltage with the change of the first current, and is positively correlated with the first current.
  • the charging control unit may include a charging chip, and the battery module is charged through the fourth voltage output by the charging chip.
  • the charging chip and the battery module may be connected through wires, etc., because the wires have impedance. , so the fourth voltage output by the charging chip will be divided by the above-mentioned impedance. That is, the preset first voltage can be understood as the voltage at which the fourth voltage is input to the battery module after passing through the impedance. Therefore, the charging device can compensate the fourth voltage output by the charging chip based on the voltage divided by the impedance, thereby adjusting the preset first voltage.
  • the second adjustment amount in the adjustment information for the preset first voltage is the change amount of the preset first voltage with the change of the first current, and is positively related to the first current.
  • embodiments of the present application provide a constant voltage charging voltage adjustment method, which is applied to electronic equipment.
  • the electronic equipment includes a battery module, and the battery module corresponds to a constant voltage charging stage during the charging process; in the During the constant voltage charging stage, the method includes: outputting a preset first voltage to the battery module through the charging control unit; obtaining the voltage value of the second voltage of the battery module through the processing unit, and calculating the voltage based on the second voltage. voltage value to obtain the adjustment information corresponding to the preset first voltage.
  • the above-mentioned second voltage is the actual charging voltage obtained by the above-mentioned battery module at the above-mentioned preset first voltage; the charging control unit adjusts the preset first voltage based on the adjustment information to provide The battery module outputs a third voltage, and the third voltage is the adjusted first voltage.
  • the voltage value of the third voltage is greater than the voltage value of the preset first voltage.
  • the method further includes: detecting the voltage value of the second voltage through a detection unit and sending it to the processing unit.
  • the detection unit is a fuel gauge; the detection unit detects the voltage value of the second voltage and sends it to the processing unit, including: detecting the voltage value of the second voltage via the fuel gauge. The voltage value of the second voltage is sent to the processing unit.
  • detecting the voltage value of the second voltage through the fuel gauge and sending it to the processing unit includes: when the temperature corresponding to the electronic device is within a preset temperature range When the voltage value of the second voltage is detected by the fuel gauge, the voltage value is sent to the processing unit.
  • the adjustment information includes a first adjustment amount
  • the first adjustment amount is a difference between a voltage value of the second voltage and a preset voltage value.
  • obtaining the adjustment information corresponding to the preset first voltage based on the voltage value of the second voltage includes: based on the voltage value of the second voltage and the preset voltage value , to obtain the adjustment information corresponding to the above-mentioned preset first voltage.
  • obtaining the adjustment information corresponding to the preset first voltage based on the voltage value of the second voltage and the preset voltage value includes: comparing each time in multiple time points. The voltage difference between the voltage value of the second voltage corresponding to the point and the above-mentioned preset voltage value is obtained, and the voltage difference corresponding to each of the multiple time points is obtained; based on each of the multiple time points The voltage differences corresponding to the respective time points determine the adjustment information.
  • the method further includes: detecting the current value of the first current through the detection unit and sending it to the processing unit, wherein the first current is the current value of the battery module at the location where the battery module is located. the corresponding charging current at the preset first voltage; the voltage value based on the second voltage, and obtaining the adjustment information corresponding to the preset first voltage, including: the voltage value based on the second voltage and the current value of the first current to determine the adjustment information.
  • the adjustment information includes a second adjustment amount
  • the second adjustment amount is the change amount of the preset first voltage with the change of the first current, and is the same as the first current. Positive correlation.
  • inventions of the present application provide an electronic device.
  • the electronic device includes a battery module and a charging device as described in the above first aspect and embodiments related to the first aspect; the charging device is electrically connected to the battery module.
  • embodiments of the present application provide a computer-readable storage medium for storing the information provided in the first aspect.
  • a computer software instruction used in a charging device which includes a program designed for executing the above aspect.
  • embodiments of the present application provide a computer program.
  • the computer program includes instructions.
  • the computer program can execute the process executed by the charging device in the first aspect.
  • the present application provides a chip system, which includes a processor and a charging control unit, and is used to support the electronic device to implement the functions involved in the above-mentioned first aspect, for example, generate or process the functions involved in the above-mentioned charging method. information involved.
  • the chip system further includes a memory, and the memory is used to store necessary program instructions and data for the data sending device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • FIG. 1 is a schematic diagram of a battery charging circuit in an existing electronic device provided by an embodiment of the present application.
  • FIG. 2 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a charging device provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of current and voltage corresponding to a battery in the constant voltage charging stage provided by an embodiment of the present application.
  • Figure 5 is a schematic diagram of gear information provided by an embodiment of the present application.
  • Figure 6 is a schematic diagram of another gear information provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of detecting the corresponding current and voltage of the battery in the constant voltage charging stage based on the above-mentioned FIG. 4 provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another charging device provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of resistance gear information provided by an embodiment of the present application.
  • FIG 10 is a schematic flowchart of a charging method provided by an embodiment of the present application.
  • At least one (item) refers to one or more, and “plurality” refers to two or more.
  • “And/or” is used to describe the relationship between associated objects, indicating that there can be three relationships. For example, “A and/or B” can mean: only A exists, only B exists, and A and B exist simultaneously. , where A and B can be singular or plural. The character “/” generally indicates that the related objects are in an "or” relationship. “At least one of the following” or similar expressions thereof refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items).
  • At least one of a, b or c can mean: a, b, c, "a and b", “a and c", “b and c", or "a and b and c” ”, where a, b, c can be single or multiple.
  • an embodiment means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application.
  • the appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.
  • a component may be, but is not limited to, a process, a processor, an object, an executable file, a thread of execution, a program and/or a computer running on a processor.
  • applications running on the computing device and the computing device may be components.
  • One or more components can reside in a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. Additionally, these components can execute from various computer-readable media having various data structures stored thereon.
  • a component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component, a local system, a distributed system, and/or a network, such as the Internet, which interacts with other systems via signals) Communicate through local and/or remote processes.
  • data packets eg, data from two components interacting with another component, a local system, a distributed system, and/or a network, such as the Internet, which interacts with other systems via signals
  • the charging adapter can charge the battery through a charging chip in the electronic device.
  • the charging chip can control the corresponding voltage or current to remain unchanged at the relevant stage. For example: during the constant voltage charging stage, the charging chip can output a constant charging voltage to the battery, and as the charging time increases, the voltage of the battery module gradually increases close to the charging voltage. Under the constant voltage charging stage, the charging current When the current value is less than the preset value, the battery is considered to be fully charged, and the charging process is terminated.
  • FIG. 1 is a schematic diagram of a battery charging circuit in an existing electronic device according to an embodiment of the present application.
  • the charging chip outputs the charging voltage to the battery module.
  • the output charging voltage V1 will have a voltage drop due to the equivalent resistance R (ie, the impedance existing during the charging process), and is finally applied to the charging voltage V2 of the battery module. It should be less than the charging voltage V1 output by the charging chip.
  • the charging voltage V1 output by the charging chip is a voltage output by the charging chip based on a preset full charging voltage (which can also be understood as a preconfigured battery full charging voltage).
  • the charging voltage V1 output by the charging chip will differ from the actual charging voltage obtained by the battery module.
  • V2 is biased.
  • the battery can be considered to be fully charged, and the charging process is terminated.
  • the preset full charging voltage in the charging chip is the battery charging voltage preconfigured in the charging chip.
  • V1 V2
  • the charging voltage V1 output by the charging chip is often affected by factors such as board-level stress, temperature, Factors such as device aging are inconsistent with the battery charging voltage (preset full charge voltage) preconfigured in the charging chip, which causes the charging voltage of the battery module to fail to reach the preset full charge voltage during the actual charging process, resulting in the final charging of the battery module.
  • the power at cut-off cannot reach the ideal full capacity.
  • existing technologies often use the following two methods to adjust the battery charging voltage preconfigured in the charging chip: Line adjustment, where:
  • Method 1 After the charging chip is produced, the constant voltage charging voltage in the constant voltage charging stage controlled by the charging chip can be calibrated through the chip integrated circuit automatic test equipment (ATE), so that the calibrated charging chip can When the constant voltage charging voltage is controlled by the voltage charging order, it can be as close as possible to the preset full charging voltage.
  • ATE chip integrated circuit automatic test equipment
  • the chip integrated circuit automatic test equipment is equipped with a high-precision power supply (error within the range of ⁇ 1mV) to test the actual value and target value of the constant voltage charging voltage controlled by the charging chip during the constant voltage charging stage ( That is, the difference between the preset full charging voltage), the modification code is calculated based on the difference, and then the modification code can be programmed into the chip to use the modification code to adjust the charging voltage during the actual charging process. Compensation is performed, and since the modification code is directly programmed into the chip, the above compensation can be permanently effective during the actual charging process.
  • the above two deviations (charging chip distortion and temperature drift error) require ATE to pre-calibrate the threshold voltage with at least about ⁇ 0.5% margin, about ⁇ 25mV.
  • the actual battery The full charge voltage is reduced by 50mV, which is equivalent to a 5% reduction in capacity.
  • Method 2 Add relevant calibration devices to the production line of electronic equipment for calibration.
  • an external set of program-controlled power supply simulates the battery, simulates the charging process, tests the actual charging cut-off voltage value (equivalent to the constant voltage charging voltage), and then calculates the difference between the battery's nominal value and the actual charging cut-off voltage value. value, the register configuration is adjusted according to the difference, and the charging chip of the electronic device is calibrated and repaired. After functional retest, it can be used before leaving the factory.
  • the production line requires production resources such as calibration stations and retest stations, which will cause long test times and high costs.
  • the temperature drift error is large in the entire temperature range.
  • the influence of temperature during actual use also needs to be considered, leaving a large margin on the pre-calibration threshold.
  • the chip will produce aging distortion in the later stages of use.
  • the calibration method on the production line cannot solve this problem.
  • the deviation range can only be reserved in the pre-calibration threshold.
  • the above deviation requires a pre-calibration threshold voltage of at least about ⁇ 0.3% margin, about ⁇ 15mV. Calculated based on the upper limit, the actual battery full charge voltage is reduced by 30mV, which is equivalent to a reduction of 3% in capacity.
  • the existing technology cannot guarantee that the charging voltage output by the charging chip reaches the ideal charging voltage during the actual charging process.
  • the method of IR compensation specifically refers to: the charging chip calculates the value of the charging process based on the preconfigured compensation resistor R value (that is, equivalent to the preset equivalent resistance R value) and the current value during the actual charging process.
  • the compensation voltage value corresponding to the impedance is based on the preset full charge voltage of the charging chip. According to the above compensation voltage value, the actual output voltage of the charging chip is raised, so that the charging voltage output to the battery module is closer to the preset full charge voltage. .
  • the compensation resistor R value is usually Configuring a lower value or even not configuring it means that for electronic devices with impedance or actual impedance that is too large, the actual charging voltage of the battery module is still lower than the preset full charging voltage, so that the battery power is still unable to reach the Ideal full capacity.
  • Embodiments of the present application provide a charging device that automatically adjusts a constant voltage charging voltage during each charging process in an electronic device.
  • the charging device includes a processing unit and a charging control unit.
  • the processing unit is used to obtain the voltage value of the second voltage during the above-mentioned constant voltage charging stage.
  • the second voltage is obtained by the battery module at a preset first voltage.
  • the actual charging voltage based on the voltage value of the second voltage, obtain the adjustment information corresponding to the preset first voltage; the above-mentioned charging control unit is used to adjust the charging voltage output by the above-mentioned constant voltage charging stage based on the above-mentioned adjustment information, Then, the battery is charged with the adjusted charging voltage output by the charging control unit.
  • the device can adjust the charging voltage output by the charging device according to the actual charging voltage of the battery module during the constant voltage charging stage, so that the actual charging voltage in the embodiment of the present application is closer to the preset full charging voltage within a safe range, ensuring that electronic equipment battery life and safety.
  • the charging chip mentioned in the above embodiments and the following related embodiments is a device used in electronic equipment to control the power supply to charge the battery. It can also be used to control the charging voltage and/or charging current during the charging process. You can control the start and end of charging, etc.
  • the electronic devices involved in the embodiments of the present application may be mobile power sources (such as power banks) including rechargeable batteries; mobile terminals, such as smart wearable devices (such as smart glasses, smart watches, sports bracelets, headphones, etc.), laptops, mobile phones, tablets, cameras, wireless mice, wireless keyboards, etc.; smart homes, such as: sweeping robots, smart speakers, radios, portable projectors, electric toothbrushes, electric shavers, Fans, rechargeable lighting equipment (such as flashlights, table lamps, spotlights, etc.); electric vehicles, such as electric vehicles (such as balance cars, electric wheelchairs, golf carts, electric bicycles, electric forklifts, etc.), unmanned vehicles Machines, mobile robots, etc.
  • the embodiments of the present application do not impose specific limitations.
  • the above-mentioned rechargeable batteries may be lead-acid batteries, nickel-cadmium batteries, nickel-iron batteries, nickel-metal hydride batteries, lithium-ion batteries, etc.
  • the embodiments of this application do not impose specific restrictions on the material and capacity of the rechargeable battery.
  • FIG. 2 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
  • the electronic device 01 in this application may include the charging device 100 and the battery module 200 in Figure 2.
  • the electronic device 01 may be connected to the power supply 02 through a charging adapter (not shown).
  • the power supply 02 is
  • the battery module 200 in the electronic device 01 provides power. in,
  • the battery module 200 is a rechargeable and dischargeable battery that can provide power to various components of the electronic device 01 .
  • the battery module 200 may be a rechargeable lead-acid battery, a nickel-cadmium battery, a nickel-iron battery, a nickel-metal hydride battery, or a lithium-ion battery. wait.
  • One or more packs of such batteries may be configured as a power source to provide power to various components of electronic device 01.
  • the embodiment of the present application does not place specific restrictions on the capacity of the battery module 200.
  • the capacity of the battery module 200 may be 20000mAh, 10000mAh, 4400mAh, 100mAh, etc.
  • the capacity of the battery module 200 is related to the full charging voltage of the battery module 200 .
  • the charging device 100 can receive the charging input of the power source 02 from a charging adapter (such as a charger) and charge the battery module 200 .
  • the charging device 100 can control the charging voltage and charging current during the charging process; it can also stop charging the battery when the End Of Charge (EOC) condition is met, and instruct the battery module to complete charging.
  • the charging device 100 can charge the battery module with a preset first voltage during the constant voltage charging stage.
  • the preset first voltage is the charging device based on the preset full charging voltage.
  • the preset charging voltage in the constant voltage charging stage can also be adjusted based on the feedback of the actual charging voltage of the battery module to ensure the safety of power consumption of the electronic device while improving the endurance of the electronic device.
  • FIG. 2 functionally illustrates a charging device and a battery module in an electronic device
  • the charging device may actually include multiple batteries stored in the same or different physical housings. processor, or control hardware circuit.
  • references to a charging device will be understood to include references to a collection of processors or computers or memories that may or may not operate in parallel. Rather than using a single processor to perform the steps described herein, some components such as within a charging device may each have its own processor that only performs calculations related to component-specific functionality.
  • FIG. 2 the schematic diagram of the electronic device architecture in FIG. 2 is only an exemplary implementation in the embodiment of the present application.
  • the electronic device architecture in the embodiment of the present application includes but is not limited to the above electronic device architecture.
  • FIG. 3 is a structure of a charging device provided by an embodiment of the present application.
  • the charging device 100 of the electronic device 01 may include: a processing unit 101 and a charging control unit 102 , and may also include a detection unit 103 .
  • the processing unit 101 is equivalent to a processing unit, a processing chip, a system-on-a-chip (SOC), etc. in electronic equipment.
  • the processing unit 101 is configured to obtain the voltage value of the second voltage of the battery module during the constant voltage charging stage, and determine the preset first voltage based on the voltage value of the second voltage.
  • the second voltage is the actual charging voltage obtained by the battery module 200 at the preset first voltage.
  • the processing unit 101 may also be used to send the adjustment information to the charging control unit 102.
  • the processing unit 101 obtains the second voltage reference may be made to the relevant description of the detection unit 103 in the following embodiments, which will not be described in detail here.
  • the above-mentioned processing unit 101 function can also be provided in the charging control unit 102, that is, the processing unit 101 can also be a processing module in the charging control unit, which is not specifically limited in the embodiment of the present application.
  • the charging control unit 102 is used to receive the charging input of the power supply 02 from a charging adapter (such as a charger), and output a charging voltage to the battery module 200 to charge the battery module 200 .
  • the charging control unit 102 is also configured to output a preset first voltage to the battery module during the constant voltage charging stage; and after receiving the adjustment information, based on the adjustment information, The preset first voltage output during the constant voltage charging stage is adjusted to output a third voltage to the battery module 200 , where the third voltage is the adjusted first voltage.
  • the charging adapter is a wired charging adapter.
  • the charging control unit 102 can use a USB interface, USB Type C interface, Lightning interface, Combo Connector interface, Combined Charging System (Combined Charging System, CCS) and other interfaces receive the charging input of the wired charging adapter, which are not specifically limited in the embodiments of the present application.
  • USB interface USB Type C interface
  • Lightning interface Combo Connector interface
  • Combined Charging System Combined Charging System, CCS
  • other interfaces receive the charging input of the wired charging adapter, which are not specifically limited in the embodiments of the present application.
  • the third voltage output by the charging device to the battery module is greater than the preset first voltage output by the charging device, that is, the voltage value of the third voltage is greater than the voltage value of the preset first voltage.
  • the charging device adjusts the first voltage in an upward direction, so that the second voltage corresponding to the battery is closer to the preset full charging voltage, thereby improving the accuracy of the charging voltage and improving the endurance of the fully charged battery. . Therefore, please refer to FIG. 4 , which is a schematic diagram of current and voltage corresponding to a battery in the constant voltage charging stage provided by an embodiment of the present application. As shown in FIG. 4 , the third voltage makes the actual charging voltage corresponding to the battery (ie, the second voltage) closer to the preset full charging voltage.
  • the charging control unit 102 when the charging control unit 102 outputs the third voltage to the battery module, the actual charging voltage value received by the battery module is greater than the actual charging voltage value received by the battery module when it outputs the preset first voltage to the battery module. Therefore, after charging the battery module with the third voltage, the capacity of the fully charged battery module is higher than the capacity of the fully charged battery module after charging the battery module with the preset first voltage. Enhanced battery life of electronic devices.
  • the corresponding charging voltage of the battery module of the electronic device will change during the constant voltage charging stage.
  • the embodiment of the present application needs to adjust the charging voltage within the corresponding safety range of the battery. adjust.
  • the above-mentioned charging device further includes a detection unit 103; the above-mentioned detection unit 103 is used to detect the voltage value of the above-mentioned second voltage and send it to the above-mentioned processing unit 101.
  • the detection unit 103 can be used to measure the battery voltage, actual charging voltage, first current, etc. of the battery module 200, and can also send the measured relevant data (such as charging voltage, charging current, etc.) to the processing unit 101.
  • the detection unit 103 may be a high-precision voltage and current measurement device. In some embodiments, it can also be used to monitor battery capacity, battery cycle times, and obtain battery health status (leakage, impedance) and other parameters.
  • the detection unit 103 can be a device or hardware circuit independent of the charging control unit 102 (as shown in Figure 2), or it can be a measurement module or part of the hardware circuit inside the charging control unit 102.
  • this application implements The examples do not impose specific restrictions.
  • the above-mentioned detection unit 103 may be a fuel gauge; the fuel gauge is used to detect the voltage value of the above-mentioned second voltage and send it to the above-mentioned processing unit.
  • the detection unit 103 can be a fuel gauge in an electronic device.
  • the fuel gauge is used to measure relevant parameters of the battery module (such as battery charging current, actual battery charging voltage, etc.). Therefore, the fuel gauge can detect the voltage of the above-mentioned second voltage. value and sent to the above processing unit.
  • the hardware space and cost of the electronic device can be saved.
  • the above-mentioned fuel gauge is used to detect the voltage value of the above-mentioned second voltage when the temperature corresponding to the above-mentioned electronic device is within a preset temperature range, and send it to the above-mentioned processing unit. Changes in the temperature of the electronic device will affect the accuracy of the second voltage obtained by the fuel gauge. Please refer to the following Table 1. Table 1 is a representation of the accuracy of a fuel gauge at different temperatures provided by embodiments of the present application.
  • the working conditions of the fuel gauge refer to: the voltage measurement range of the fuel gauge is 3V-4.4V, and when the temperature range of the electronic device is 25°C ⁇ 10°C, the accuracy deviation of the fuel gauge voltage detection can reach High accuracy of ⁇ 0.5mV; When the temperature range of the electronic device is between -25°C and 85°C, the accuracy deviation of the voltage detection of the fuel meter can reach an accuracy of ⁇ 10mV; in addition, the current measurement range of the fuel meter is greater than or equal to 200mA. When the temperature range of the electronic device is between -25 When the temperature ranges from °C to 85°C, the current detection can reach a high accuracy of ⁇ 1.5%.
  • the voltage value of the charging voltage obtained by the fuel gauge is Believable. Therefore, in the subsequent adjustment process, the accuracy of the adjusted charging voltage is more accurate.
  • the detection of the temperature of the electronic device can be realized by a thermistor.
  • the resistance of the thermistor will also change accordingly. Therefore, when the current flowing through the thermistor does not change, When the thermistor changes, according to Ohm's law, the voltage applied to the thermistor will also change accordingly.
  • Embodiments of the present application can determine the current resistance value of the thermistor by monitoring the voltage corresponding to the thermistor, and then determine the temperature corresponding to the resistance value based on the resistance value, thereby realizing temperature detection of the electronic device.
  • the above-mentioned adjustment information includes a first adjustment amount, and the above-mentioned first adjustment amount is the difference between the voltage value of the second voltage and the preset voltage value.
  • the adjustment information is adjustment information for a preset first voltage.
  • the preset voltage value can be understood as the voltage value of the preset full charge voltage. If it is determined that the actual charge received by the battery module under the preset first voltage If the voltage does not reach the preset full charging voltage, the preset first voltage can be adjusted according to the actual charging voltage, so that the actual charging voltage (second voltage) received by the battery module is also increased to the above preset full charging voltage. pressure. For example: if the preset first voltage is increased by 10mV, the actual charging voltage (second voltage) received by the battery module will also increase by 10mV.
  • the charging control unit 102 may include a charging chip, and the output end of the charging chip is connected to the input end of the battery module.
  • the preset first voltage can be understood as the charging chip according to the preset full charge voltage.
  • the voltage output by the battery module. Therefore, in an ideal state (without considering the influence of board differences, impedance and other factors or after ideally correcting the charging chip), the charging chip can fully output the preset full charging voltage to the battery module, and the actual charging voltage of the battery module can reach the preset Assume the full charging voltage, that is, the preset first voltage (preset full charging voltage) the second voltage.
  • the above-mentioned first adjustment amount is to compensate the difference between the second voltage and the preset full charge voltage based on the preset first voltage.
  • the first adjustment amount may include gear information for adjusting the voltage (such as a preset full charging voltage), and the voltage value corresponding to the gear information corresponds to the voltage value of the third voltage.
  • the gear information may include coarse adjustment gear information and fine adjustment gear information, wherein the voltage adjustment amplitude between adjacent gears in the coarse adjustment gear information is greater than the fine adjustment gear information.
  • the voltage adjustment range between adjacent gears please refer to FIG. 5.
  • FIG. 5 is a schematic diagram of gear information provided by an embodiment of the present application. As shown in Figure 5, the coarse adjustment gear 4400mV indicated by the identification information (or address information) 010100 corresponds to the voltage 4400mV.
  • the coarse adjustment gear 4400mV indicated by the identification information (or address information) 010100 also corresponds to 20 fine adjustment gears. position, through the fine adjustment function, the adjustment range of ⁇ 10mV for each coarse adjustment gear can be expanded, that is, 4390mV ⁇ 4410mV. Then, the gear information carried by the first adjustment amount may include coarse adjustment gear information and fine adjustment gear information respectively corresponding to the adjusted voltage.
  • the first adjustment amount may also include the identification information of the step and the adjustment number of the step.
  • the step is the amplitude of the adjustment voltage (such as the preset full charging voltage) supported by the charging device, which may include: 20mV. /step (20mV per step), 10mV/step, 5mV/step and 1mV/step, etc. That is to say, when the voltage adjustment amplitude is 20mV/step, when adjusting the fourth voltage, it can be determined that the single adjustable voltage amplitude is 20mV. For example: the current fourth voltage is 4400mV, and the adjusted fourth voltage determined by the charging device is 4425mV, then the charging device needs to adjust upward by one 20mV/step and five 1mV/steps based on the current fourth voltage.
  • the first adjustment amount can directly include The identification information corresponding to 20mV/step and 1mV/step respectively, and the adjustment quantity corresponding to 20mV/step and 1mV/step respectively.
  • Figure 6 is another gear information provided by the embodiment of the present application. Schematic diagram of is the fine adjustment gear information 4425mV shown in Figure 5 above.
  • the processing unit 101 may be configured to obtain the adjustment information corresponding to the preset first voltage based on the magnitude relationship between the voltage value of the second voltage and the preset voltage value. Based on the magnitude relationship between the voltage value of the second voltage (the voltage value of the actual charging voltage) and the preset voltage value (that is, the voltage value of the preset full charging voltage), it is determined to adjust the preset first voltage so that the battery The final charge at the end of charging is closer to the ideal battery full capacity, thereby improving the battery's endurance. Moreover, safety hazards caused by the actual charging voltage being greater than the preset full charging voltage of the battery can be avoided, ensuring charging safety during the charging cycle.
  • the processing unit 101 is specifically configured to: obtain the voltage value of the second voltage corresponding to multiple time points; compare the voltage value of the second voltage corresponding to each time point in the multiple time points with the voltage value of the second voltage.
  • the magnitude between the above-mentioned preset voltage values is used to obtain the voltage difference corresponding to each time point in the plurality of time points; based on the voltage difference corresponding to each time point in the plurality of time points, the voltage difference is determined.
  • Conditioning information Determining the adjustment information for calibrating the charging voltage based on the difference between the obtained voltage values of the plurality of second voltages and the above-mentioned preset voltage value can reduce the error when only one charging voltage value is obtained, so that in the subsequent calibration process, Makes the adjusted charging voltage more accurate.
  • FIG. 7 is a schematic diagram of detecting the corresponding current and voltage of the battery in the constant voltage charging stage based on the above-mentioned FIG. 4 provided by an embodiment of the present application.
  • the fuel gauge can periodically detect the voltage value of the second voltage when the temperature corresponding to the electronic device is within a preset temperature range, and send it to the processing unit. Changes in the temperature of the electronic device will affect the accuracy of the second voltage obtained by the fuel gauge, and the voltage values of multiple second voltages are periodically obtained, and the voltage values of the multiple second voltages are compared with the preset voltage value. According to the size relationship, multiple differences are obtained, and then the adjustment information is determined based on the average value of the multiple differences, which has higher accuracy.
  • the charging control unit 102 can prompt the detection unit 103 to detect the voltage value of the actual charging voltage (ie, the second voltage) of the battery module, based on the actual charging voltage.
  • the voltage value and the preset voltage value are used to obtain the adjustment information corresponding to the above-mentioned preset first voltage, that is, the first adjustment amount in the adjustment information. Therefore, the embodiments of the present application can make the battery power at the final charge cutoff closer to the ideal battery full capacity, thereby making the actual full charge voltage of the battery closer to the preset full charge voltage and improving the battery endurance.
  • safety hazards caused by the actual charging voltage being greater than the preset full charging voltage of the battery can be avoided, ensuring charging safety during the charging cycle.
  • the above-mentioned detection unit 103 is also used to detect the current value of the first current and send it to the above-mentioned processing unit, wherein the above-mentioned first current is the corresponding charging current of the above-mentioned battery module at the above-mentioned preset first voltage. ;
  • the above-mentioned processing unit is specifically configured to determine the above-mentioned adjustment information based on the voltage value of the second voltage and the current value of the first current.
  • the detection unit 103 is not only used to detect the voltage value of the charging voltage corresponding to the battery module under the currently preset first voltage (the voltage value of the second voltage) but also is used to detect the current value of the first current.
  • the processing unit 101 may also determine the above-mentioned adjustment information based on the obtained voltage value of the second voltage and the current value of the first current.
  • the detection unit can also be a fuel gauge.
  • the above-mentioned adjustment information includes a second adjustment amount
  • the above-mentioned second adjustment amount is the change amount of the above-mentioned fourth voltage output by the above-mentioned charging chip as the above-mentioned charging current changes, and is positively correlated with the charging current.
  • the charging control unit may include a charging chip, and the battery module is charged through the fourth voltage output by the charging chip.
  • the charging chip and the battery module may be connected through wires, etc. Since the wires have impedance, the charging chip outputs The fourth voltage will be divided by the above impedance. That is, the preset first voltage can be understood as the voltage at which the fourth voltage is input to the battery module after passing through the impedance.
  • the charging device can compensate the fourth voltage output by the charging chip based on the voltage divided by the impedance, thereby adjusting the preset first voltage.
  • the charging voltage of the battery module needs to be kept stable during the constant voltage charging stage, as the charging time increases and the battery module power gradually increases, the first current will gradually decrease, and therefore the voltage divided by the above impedance will also gradually decrease.
  • the second adjustment amount in the adjustment information for the preset first voltage is the change amount of the preset first voltage with the change of the first current, and is positively related to the first current.
  • the charging control unit 102 may include a charging chip, and the output terminal of the charging chip is connected to the input terminal of the battery module. Due to the additional impedance present in the printed circuit board (PCB) traces, battery connectors or charging connection wires inside the electronic device, the charging voltage output by the charging chip will deviate from the actual charging voltage obtained by the battery module ( As shown in the above-mentioned relevant embodiment shown in Figure 1). Therefore, in this embodiment of the present application, all additional impedances existing during the charging process can be equated to equivalent resistances, and the output end of the charging chip is connected to the input end of the battery module through the equivalent resistances.
  • PCB printed circuit board
  • FIG. 8 is a schematic structural diagram of another charging device provided by an embodiment of the present application.
  • the charging control unit 102 may also include a charging chip 111 and an equivalent impedance 112 .
  • the equivalent impedance 112 may include a first terminal A and a second terminal B, wherein the first terminal A of the equivalent impedance 112 is connected to the output terminal of the charging chip 111 , and the second terminal B of the equivalent impedance 112 is connected to the output terminal of the battery module 200 .
  • the above-mentioned preset first voltage V B0 is the voltage input to the above-mentioned battery module 200 after V A0 passes through the above-mentioned equivalent impedance 112.
  • the charging chip 111 takes into account the voltage division of the equivalent impedance 112
  • the equivalent impedance 112 is equivalent to the actual impedance existing between the charging chip and the battery module (equivalent to the equivalent resistance R shown in Figure 1 above), that is, a wire, etc., needs to be passed between the charging chip and the battery module.
  • the wire has line impedance; and there is impedance at the access terminal between the wire and the battery module, as well as at the terminal between the wire and the charging chip, so the charging chip output charging voltage needs to go through a series of impedance drops. It can act on the battery module only after being pressed. Therefore, the above-mentioned equivalent impedance 112 is equivalent to the entire impedance between the charging chip 111 and the battery module 200 .
  • the charging chip 111 is based on the preset
  • the actual voltage VA output by the full charge voltage will deviate from the preset full charge voltage V 0 , that is, the fourth voltage VA can be understood as the voltage actually output by the charging chip 111 .
  • the second voltage is the actual charging voltage of the battery module 200 , that is, the second voltage V B is the charging voltage value of the fourth voltage V A input to the battery module after passing through the equivalent impedance 112 .
  • the above-mentioned preset first voltage V B0 and the above-mentioned VA0 are the theoretical values of the second voltage V B and the fourth voltage VA respectively, that is, when there is no board error and the preset equivalent impedance 112 Assuming that the configuration value is equal to the actual resistance value, it can be considered that the preset first voltage V B0 is equal to the second voltage V B , and the above-mentioned V A0 is equal to the fourth voltage VA . Therefore, the above-mentioned first adjustment amount can be understood as the fixed variation amount of the above-mentioned charging chip output.
  • the fixed variation is information for adjusting the preset full charge voltage in the charging chip to make the voltage value V B of the second voltage consistent with the preset full charge voltage V 0 as much as possible.
  • Increasing the preset full charge voltage V 0 in the charging chip 111 can cause the actual voltage value V A of the fourth voltage to also increase accordingly.
  • the voltage division ratio of the equivalent impedance i.e., the resistance value
  • the voltage value V B of the second voltage also increases, and the increased voltage (i.e., the first adjustment amount) does not change with charging. Therefore, the first adjustment amount can be understood as a fixed change amount, and the function of adjustment is to achieve a fixed value deviation based on the output voltage of the original charging chip.
  • the fourth voltage V A output by the charging chip 111 needs to pass through the above-mentioned equivalent impedance 112 (the size of the equivalent impedance is the size of the actual resistance and is greater than 0) before being input to the above-mentioned battery module 200, it can be understood that , the fourth voltage V A output by the charging chip 111 needs to compensate for the above-mentioned partial voltage of the equivalent impedance 112, so that the second voltage V B can reach the preset full charging voltage (that is, the ideal battery full charging voltage).
  • V A is the actual output voltage value of the charging chip 111
  • R0 is the preconfigured value of the equivalent impedance 112
  • Vmax is the preset full charging voltage after taking into account the safety threshold. Voltage value (i.e.
  • V A-Rint is the actual output voltage value of the charging chip 111 when the R0 value is 0, V A-Rint can also be understood as the charging chip
  • V A V A-Rint +I*R0
  • V A V B +I*R1 (the formula in the embodiment shown in Figure 8 above);
  • trim value corresponding to the equivalent impedance can be calculated from the above relationship.
  • Vx and Vx-1 are respectively the charging voltages corresponding to the battery modules collected twice before and after (that is, the voltage value V B of the second voltage), and I x and I x-1 are respectively the charging voltages of the battery modules collected twice before and after.
  • the processing unit 101 in the embodiment of the present application can obtain the actual resistance value R1 and the charging chip of the equivalent impedance 112 in the electronic device based on at least two sets of voltage values of the second voltage and the current value of the charging current.
  • the difference between the resistance value R0 of the equivalent impedance 112 pre-configured in 111, and the fourth voltage output by the charging chip 111 is compensated according to the difference, so that the voltage value V B of the second voltage is divided by the equivalent impedance 112
  • the preset full charging voltage is reached. For example: During the constant voltage charging stage, the charging voltage and charging current of the two sets of battery modules are obtained, and the difference in impedance compensation is calculated to determine the voltage compensation value of the charging control unit for the impedance.
  • the second adjustment amount may include resistance gear information for adjusting the voltage divided by the equivalent impedance 112.
  • the resistance value corresponding to the resistance gear information is the actual resistance value of the equivalent impedance 112 in the electronic device.
  • the resistance gear information may also include resistance coarse adjustment gear information and resistance fine adjustment gear information, wherein the resistance adjustment amplitude between adjacent gears in the resistance coarse adjustment gear information is greater than The resistance adjustment range between adjacent gears in the resistance fine adjustment gear information.
  • FIG. 9 is a schematic diagram of resistance gear information provided by an embodiment of the present application.
  • the resistance value corresponding to the coarse adjustment gear of 45mohm (milliohm) indicated by the identification information (or address information) 011 is 45mohm.
  • the coarse adjustment gear of the resistance indicated by the identification information (or address information) 011 is 45mohm.
  • the second adjustment amount is actually a proportional coefficient adjustment, and the function of the adjustment is to achieve a voltage deviation value that changes with the charging current based on the output voltage of the original charging chip. Therefore, the embodiment of the present application specifically specifies the second adjustment amount. There are no specific restrictions on the information carried and the method of adjusting the voltage.
  • the adjustment information sent by the processing unit to the charging control unit may include the first adjustment amount and the second adjustment amount at the same time, or may include the first adjustment amount and the second adjustment amount respectively.
  • the adjustment information sent by the processing unit to the charging control unit may include the first adjustment amount and the second adjustment amount at the same time, or may include the first adjustment amount and the second adjustment amount respectively.
  • the above adjustment of the charging voltage in the constant voltage charging stage needs to be based on the safety threshold constraints of the battery voltage to determine whether the calibration conditions are met. If the conditions are met, the adjustment can be made. If it is not satisfied, the adjustment of the charging voltage in the constant voltage charging stage will be given up in this charging cycle.
  • the safety threshold constraint of the battery voltage means that the actual battery voltage corresponding to the battery does not exceed the preset full charge voltage after one charging cycle. Therefore, the calibration condition is to determine whether the difference between the current charging voltage of the battery module and the preset full charging voltage is less than the safety threshold. If it is less than the safety threshold, no adjustment is needed. If it is greater, adjustment is only required.
  • the charging device adjusts the preset first voltage during this charging cycle, after the end of this charging cycle, the adjustment to the preset first voltage needs to be rolled back, which is understandable. In order to restore the default gear configuration to prevent the actual charging voltage from being too high due to the influence of other factors (such as temperature, etc.) when charging at the third voltage in the next charging cycle, causing safety hazards.
  • Embodiments of the present application provide a charging device, which is used in the field of battery charging technology and can adjust the charging voltage in the constant voltage charging stage to ensure the battery life and power safety of electronic equipment.
  • the charging device includes: a charging control unit and a processing unit.
  • the above-mentioned charging control unit may output a preset first voltage to the battery module during the constant voltage charging stage (the preset first voltage is the voltage output by the charging control unit to the battery module based on the preset full charging voltage).
  • the above-mentioned processing unit can obtain the voltage value of the second voltage corresponding to the battery module in the constant voltage charging stage (equivalent to when the charging control unit outputs the currently preset first voltage to the battery module, the battery module receives The actual charging voltage value obtained, that is, the voltage value of the actual charging voltage); based on the voltage value of the second voltage, the adjustment information corresponding to the above-mentioned preset first voltage is obtained; the above-mentioned charging control unit can also obtain The preset first voltage in the constant voltage charging stage is adjusted and the third voltage is output to the battery module, so that when the charging control unit outputs the third voltage to the battery module, the actual charging voltage received by the battery module does not exceed the preset voltage.
  • the charging voltage of the current battery module can be adjusted according to the influence of various factors in the actual charging process (that is, the charging voltage of the battery module during the constant voltage charging phase will change. changes), it can not only avoid the influence of factors such as board-level stress, temperature, device aging, etc. on the actual charging process of the battery module, but also can adjust the charging voltage in time during the charging cycle, so that the battery in the current charging cycle can reach The ideal charging state avoids the situation where the battery is not fully charged or even the charging voltage is too high after charging is completed. Therefore, embodiments of the present application can adjust the actual charging voltage of the battery module during the constant voltage charging stage to ensure the battery life of the electronic device.
  • FIG. 10 is a schematic flow chart of a charging method provided by an embodiment of the present application.
  • the electronic equipment includes a battery module and a charging device.
  • the battery corresponds to a constant voltage charging stage during the charging process, where the charging device may include a processing unit and a charging control unit, and may also include a detection unit.
  • the charging device may be used to support and execute steps S201 to S204 of the method flow shown in FIG. 10 .
  • the method may include the following steps S202 to S204, and may also include step S201.
  • the constant voltage charging stage is a stage in which the battery is charged at a constant voltage.
  • the method includes:
  • Step S201 Output a preset first voltage to the battery module through the charging control unit.
  • the charging device may output a preset first voltage to the battery module through the charging control unit, that is, charge the battery module with the preset first voltage.
  • Step S202 Obtain the voltage value of the second voltage of the battery module through the processing unit.
  • the voltage value of the second voltage of the battery module is obtained through the processing unit, and the second voltage is the actual charging voltage obtained by the battery module at the preset first voltage.
  • the preset first voltage is the charging voltage that the battery module can theoretically obtain.
  • the voltage value of the second voltage is detected by a detection unit and sent to the processing unit.
  • the charging device also includes a detection unit.
  • the detection unit (such as a high-precision detection device) can be used to detect the voltage value of the second voltage.
  • the detection unit may be located inside the charging control unit, inside the processing unit or coupled to the battery module independently of the charging control unit and the processing unit.
  • the voltage value of the second voltage is detected through the fuel gauge and sent to the processing unit.
  • the detection unit can be a fuel gauge in an electronic device.
  • the fuel gauge is used to measure relevant parameters of the battery module (such as battery charging current, actual battery charging voltage, etc.). Therefore, the fuel gauge can detect the voltage value of the above-mentioned second voltage. , and sent to the above processing unit.
  • electronic device hardware space and cost are saved.
  • the voltage value of the second voltage is detected by the fuel gauge and sent to the processing unit. Changes in the temperature of the electronic device will affect the accuracy of the second voltage obtained by the fuel gauge. Therefore, in the embodiment of the present application, before obtaining the voltage value of the second voltage, it is also necessary to determine the temperature corresponding to the current electronic device. When the temperature corresponding to the device is within the preset temperature range, the voltage value of the charging voltage obtained by the fuel gauge is credible. Therefore, in the subsequent adjustment process, the accuracy of the adjusted charging voltage is more accurate.
  • the detection unit detects the current value of the first current and sends it to the processing unit, where the first current is the corresponding charging value of the battery module at the preset first voltage.
  • Current; obtaining the adjustment information corresponding to the preset first voltage based on the voltage value of the second voltage includes: based on the voltage value of the second voltage and the current value of the first current, determining the Conditioning information.
  • the detection unit is not only used to detect the voltage value of the charging voltage corresponding to the battery module under the currently preset first voltage (the voltage value of the second voltage) but also is used to detect the current value of the current charging current.
  • the processing unit may also determine the above-mentioned adjustment information based on the obtained voltage value of the second voltage and the current value of the charging current.
  • the detection unit can also be a fuel gauge.
  • detecting the current value of the first current through the detection unit and sending it to the processing unit includes: detecting the second current value corresponding to each time point in multiple time points through the detection unit.
  • the voltage value of the second voltage and the current value of the first current are sent to the processing unit;
  • determining the adjustment information based on the voltage value of the second voltage and the current value of the first current includes: The voltage value of the second voltage and the current value of the first current corresponding to each of the multiple time points determine the adjustment information.
  • multiple sets of charging voltage values ie, the voltage value of the second voltage
  • the first current value of the constant voltage charging stage are obtained to avoid acquiring only one set.
  • multiple sets of data can also be acquired periodically, that is, the time intervals between any adjacent time points among the above multiple time points are equal.
  • Step S203 Based on the voltage value of the second voltage, obtain the preset adjustment information corresponding to the first voltage.
  • the adjustment information corresponding to the preset first voltage is obtained.
  • This adjustment information can adjust the charging voltage in the constant voltage charging stage to ensure the battery life and power safety of the electronic device.
  • obtaining the adjustment information corresponding to the preset first voltage based on the voltage value of the second voltage includes: obtaining the above preset voltage based on the voltage value of the second voltage and the preset voltage value.
  • the adjustment information corresponding to the first voltage includes: obtaining the above preset voltage based on the voltage value of the second voltage and the preset voltage value.
  • obtaining the adjustment information corresponding to the preset first voltage based on the voltage value of the second voltage and the preset voltage value includes: comparing the adjustment information corresponding to each time point in multiple time points. Between the voltage value of the second voltage and the above-mentioned preset voltage value, a voltage difference corresponding to each time point in the plurality of time points is obtained; based on the voltage difference corresponding to each time point in the plurality of time points. The voltage difference determines the adjustment information.
  • the adjustment information includes a first adjustment amount, and the first adjustment amount is a difference between a voltage value of the second voltage and a preset voltage value.
  • the adjustment information is adjustment information for a preset first voltage.
  • the preset voltage value is the voltage value of the preset full charge voltage.
  • the preset full charge voltage is the preset battery full charge voltage of the battery module. If the battery module is determined If the actual charging voltage received at the preset first voltage does not reach the preset full charging voltage, the preset first voltage can be adjusted according to the preset full charging voltage, so that the actual charging voltage received by the battery module (The second voltage) is also increased to the preset full charging voltage. For example: if the preset first voltage is increased by 10mV, the actual charging voltage (second voltage) received by the battery module will also increase by 10mV.
  • the adjustment information includes a second adjustment amount, which is the change amount of the preset first voltage with the change of the first current, and is positively related to the first current.
  • the charging control unit may include a charging chip, and the battery module is charged through the fourth voltage output by the charging chip.
  • the charging chip and the battery module may be connected through wires, etc. Since the wires have impedance, the charging chip outputs The fourth voltage will be divided by the above impedance. That is, the preset first voltage can be understood as the voltage at which the fourth voltage is input to the battery module after passing through the impedance. Therefore, the charging device can compensate the fourth voltage output by the charging chip based on the voltage divided by the impedance, thereby adjusting the preset first voltage.
  • the second adjustment amount in the adjustment information for the preset first voltage is the change amount of the preset first voltage with the change of the first current, and is positively related to the first current.
  • Step S204 The charging control unit adjusts the preset first voltage based on the adjustment information, and outputs a third voltage to the battery module.
  • the charging control unit can adjust the preset first voltage based on the adjustment information to obtain the third voltage, and can also output the third voltage to the battery module, so that the charging control unit outputs the third voltage to the battery module.
  • the actual charging voltage received by the battery module is closer to the preset full charging voltage, which improves the battery life of the electronic device.
  • the third voltage is the adjusted first voltage.
  • the voltage value of the third voltage is greater than the voltage value of the preset first voltage. That is, correspondingly, when the charging control unit outputs the third voltage to the battery module, the actual charging voltage value received by the battery module is greater than the actual charging voltage value received by the battery module when the current preset first voltage is output to the battery module. . Therefore, after charging the battery module with the third voltage, the capacity of the fully charged battery module is higher than that of the fully charged battery module after charging the battery module with the preset first voltage, which is greatly enhanced. Battery life of electronic devices.
  • Embodiments of the present application provide a charging device, which is used in the field of battery charging technology and can adjust the charging voltage in the constant voltage charging stage to ensure the battery life and power safety of electronic equipment.
  • the above-mentioned charging device can output a preset first voltage to the battery module during the constant voltage charging stage (the preset first voltage is the charging device
  • the voltage output to the battery module based on the preset full charge voltage, the preset full charge voltage can be understood as the preset battery full charge voltage).
  • the charging device includes: a charging control unit and a processing unit.
  • the above-mentioned processing unit is equivalent to a processing unit, a processing chip or a system-on-a-chip (SOC) in electronic equipment.
  • the second data corresponding to the battery module in the constant voltage charging stage can be obtained.
  • the voltage value of the voltage (the voltage value of the second voltage is equivalent to the actual charging voltage value received by the battery module when the charging control unit outputs the currently preset first voltage to the battery module); based on the voltage value of the second voltage, Obtain the adjustment information corresponding to the above-mentioned preset first voltage; the above-mentioned charging control unit can also adjust the preset first voltage in the constant voltage charging stage according to the above-mentioned adjustment information, and output a third voltage (the third voltage) to the above-mentioned battery module.
  • the third voltage is the adjusted first voltage), so that when the charging control unit outputs the third voltage to the battery module, the actual charging voltage value received by the battery module is closer to the voltage value of the preset full charging voltage (i.e., the preset voltage value), improving the charging accuracy of the battery. Moreover, the preset full charging voltage will not be exceeded.
  • the charging voltage of the current battery module can be adjusted according to the influence of various factors in the actual charging process (i.e., constant voltage charging in the embodiment of the present application The charging voltage of the battery module will change during each stage), which not only avoids the influence of factors such as board-level stress, temperature, device aging, etc.
  • embodiments of the present application can adjust the actual charging voltage of the battery module during the constant voltage charging stage to ensure the battery life of the electronic device.
  • steps S201 to S204 in the above-mentioned Figure 10 can also refer to the relevant descriptions in the above-mentioned embodiments of Figures 3-9, which will not be described again in this embodiment of the present application.
  • the disclosed device can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the above units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be through some interfaces, and the indirect coupling or communication connection of the devices or units may be in electrical or other forms.
  • the units described above as separate components may or may not be physically separated.
  • the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the above integrated units can be implemented in the form of hardware or software functional units.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or contributes to the existing technology, or all or 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 a number of instructions to cause a computer device (which can be a personal computer, a server or a network device, etc., specifically a processor in the computer device) to execute the above-mentioned embodiments of the present application. All or part of the steps of a method.
  • the aforementioned storage media may include: U disk, mobile hard disk, magnetic disk, optical disk, read-only memory (Read-Only Memory, abbreviation: ROM) or random access memory (Random Access Memory, abbreviation: RAM), etc.
  • U disk mobile hard disk
  • magnetic disk magnetic disk
  • optical disk read-only memory
  • read-only memory Read-Only Memory
  • RAM random access memory

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract

本申请实施例提供了一种充电装置、方法及相关设备，涉及电池充电技术领域，其中，该充电装置应用于电子设备，电子设备包括电池模块，电池模块在充电过程中对应有恒压充电阶段；装置包括充电控制单元和处理单元；充电控制单元用于在恒压充电阶段时，向电池模块输出预设的第一电压；处理单元用于在恒压充电阶段，获取电池模块的第二电压的电压值，并基于第二电压的电压值，获得预设的第一电压对应的调节信息；第二电压为电池模块在预设的第一电压下获得的实际充电电压。充电控制单元还用于基于调节信息，对预设的第一电压进行调节，向电池模块输出第三电压。实施本申请实施例可以校准恒压充电阶段的充电电压，以保证电子设备的续航和用电安全。

Description

一种充电装置、方法及相关设备
本申请要求于2022年3月24日提交中国专利局、申请号为202210294330.0、申请名称为“一种充电装置、方法及相关设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池充电技术领域，尤其涉及一种充电装置、方法及相关设备。
背景技术
随着电子设备的高速发展，相关电池的技术也跟着飞跃发展。由于不同种类的电池的原理不同，导致每种类别电池的充电要求也各不相同。在目前电池有线充电领域中，基于降压(Buck)式变换电路进行充电的电池，在一个完整的充电周期中，均会经历恒压(Constant Voltage，CV)充电阶段。其中，恒压充电阶段是指充电电源针对电池的充电电压在该阶段的充电时间里保持恒定的数值(该数值可以理解为充电电压的电压值)，且随着充电时间增加，电池模块电量逐渐升高，电池模块的电压也逐渐升高接近该充电电压。其中，在该恒压充电阶段下，当充电电流小于预设电流值时，即可认为该电池被充满电，从而充电过程截止。
因此，若在恒压充电阶段中，充电电压与电池预设的满充电压(即，电池充满电时的电压理想值)不一致，会导致电池截止充电后，电池最终充电截止时的电量与理想的满容量不一致。另外，这种实际电压超过预设的满充电压的情况，不仅可能会造成能源浪费并损害电池，也可能会导致电池爆炸；实际电压不足预设的满充电压的情况，则会导致电池无法充满的问题，进而影响续航。例如：以手机常用锂电池为例，以满充电压为基础，每降低10mV，电池的容量大约减少1％，从而续航也随之减小。
因此，如何调节恒压充电阶段的充电电压，是亟待解决的问题。
发明内容
本申请实施例提供一种充电装置、方法及相关设备，涉及电池充电技术领域，可以校准恒压充电阶段的充电电压，以保证电子设备的续航和用电安全。
第一方面，本申请实施例提供了一种充电装置，应用于电子设备，上述电子设备包括电池模块，上述电池模块在充电过程中对应有恒压充电阶段；上述装置包括：充电控制单元和处理单元；上述充电控制单元，用于在上述恒压充电阶段时，向上述电池模块输出预设的第一电压；上述处理单元，用于在上述恒压充电阶段，获取上述电池模块的第二电压的电压值，并基于上述第二电压的电压值，获得上述预设的第一电压对应的调节信息，其中，上述第二电压为上述电池模块在上述预设的第一电压下获得的实际充电电压；上述充电控制单元，用于基于上述调节信息，对上述预设的第一电压进行调节，向上述电池模块输出第三电压，上述第三电压为调节后的第一电压。
现有技术中，若在恒压充电阶段中的充电电压小于电池预设的满充电压，则会出现电池无法被充满的问题，进而影响电子设备的续航。而且，为了确保电池的充电电压不超过预设 满充电压(该预设满充电压可以理解为预设的电池满充电压)，现有的调节方式往往会将电池的充电电压校准在预设满充电压以下，而且由于现有的调节方式无法消除诸如板级应力、温度、器件老化等因素对恒压充电电压的影响，因此会存在电池的实际充电电压与预设满充电压差距过大的情况，从而导致电子设备(如：手机、平板、智能手表、无线耳机等)在使用生命周期中无法使得电池电量无法达到理想的满容量，影响电子设备的续航甚至使用寿命。因此，本申请实施例提供了一种充电装置，应用于电池充电技术领域，可以在恒压充电阶段，调节恒压充电阶段的充电电压，以保证电子设备的续航和用电安全。该充电装置包括：充电控制单元和处理单元，其中，上述充电控制单元在恒压充电阶段时，可以向电池模块输出预设的第一电压(该预设的第一电压为充电控制单元基于预设满充电压向电池模块输出的电压)。上述处理单元相当于电子设备中的处理单元、处理芯片或片上系统(System-on-a-chip，SOC)等，在恒压充电阶段时，可以获取恒压充电阶段内电池模块对应的第二电压的电压值(第二电压的电压值相当于在充电控制单元向电池模块输出当前预设的第一电压时，电池模块接收到的实际充电电压值)；基于该第二电压的电压值，获得上述预设的第一电压对应的调节信息；上述充电控制单元还可以根据上述调节信息对恒压充电阶段中预设的第一电压进行调节，并向上述电池模块输出第三电压(该第三电压为调节后的第一电压)，使得在充电控制单元向电池模块输出第三电压时，电池模块接收到的实际充电电压更接近预设满充电压，提高了电池的充电精度。而且，不会超过该预设满充电压。另外，本申请实施例中，通过获取充电过程中针对电池模块的充电电压，可以根据实际充电过程中各个因素的影响对当前电池模块的充电电压进行调节(即，本申请实施例中恒压充电阶段电池模块的充电电压会发生变化)，不仅可以避免诸如板级应力、温度、器件老化等因素对电池模块在实际充电过程的影响，而且还可以在充电周期中对充电电压及时调整，使得处于当前充电周期中的电池可以达到理想的充电状态，避免了在充电完成后才发现电池未被充满，甚至充电电压过高的情况。因此，本申请实施例可以在恒压充电阶段，调节电池模块的实际充电电压，以保证电子设备的续航。
在一种可能实现的方式中，上述第三电压的电压值大于上述预设的第一电压的电压值。
在本申请实施例中，第三电压的电压值大于预设的第一电压的电压值，即对应的，在充电控制单元向电池模块输出第三电压时，电池模块接收到的实际充电电压值要大于向电池模块输出当前预设的第一电压时，电池模块接收到的实际充电电压值。也因此，以第三电压向电池模块充电结束后，满充的电池模块的容量要高于以预设的第一电压向电池模块充电结束后，满充的电池模块的容量，大大的加强了电子设备的续航。
在一种可能实现的方式中，上述充电装置还包括检测单元；上述检测单元，用于检测上述第二电压的电压值，并发送至上述处理单元。
在本申请实施例中，充电装置还包括检测单元，在恒压充电阶段，可以通过检测单元(如：高精度检测装置)用于检测第二电压的电压值。其中，该检测单元可以位于充电控制单元内部，处理单元内部或独立于充电控制单元和处理单元之外与电池模块耦合。
在一种可能实现的方式中，上述检测单元为电量计；上述电量计，用于检测上述第二电压的电压值，并发送至上述处理单元。
在本申请实施例中，检测单元可以为电子设备中的电量计，该电量计用于测量电池模块的相关参数(如：电池充电电流、电池实际充电电压等)，因此，该电量计可以检测上述第二电压的电压值，并发送至上述处理单元。通过利用电子设备中的现有器件检测第二电压的电压值，节省了电子设备硬件空间和成本。
在一种可能实现的方式中，上述电量计，用于在上述电子设备对应的温度处于预设温度 范围内时，检测上述第二电压的电压值，并发送至上述处理单元。
电子设备的温度的变化会影响到电量计获取的第二电压的精度，因此，在本申请实施例中，在获取第二电压的电压值前，还需要确定当前电子设备对应的温度，在电子设备对应的温度处于预设温度范围内时，该电量计获取的充电电压的电压值是可信的。也因此，在后续调节过程中，调节后的充电电压精度更准确。
在一种可能实现的方式中，上述调节信息包括第一调节量，上述第一调节量为所述第二电压的电压值与预设电压值之间的差值。
在本申请实施例中，调节信息是针对预设的第一电压的调节信息，该预设电压值为预设满充电压的电压值，若确定电池模块在该预设第一电压下接收到的实际充电电压达不到预设满充电压，则可以根据该预设满充电压调节预设的第一电压，从而使得电池模块接收到的实际充电电压(第二电压)也随之提升至预设满充电压。例如：对预设的第一电压增加10mV则电池模块接收到实际充电电压(第二电压)也随之增加10mV。
在一种可能实现的方式中，基于上述第二电压的电压值和上述预设电压值，获得上述预设的第一电压对应的调节信息。
在本申请实施例中，基于第二电压的电压值(实际充电电压的电压值)和电池模块对应的预设电压值之间的大小关系，确定调节预设的第一电压，可以使得电池最终充电截止时的电量更接近理想的电池满容量，从而提高电池的续航能力。而且可以避免因实际充电电压大于电池的预设满充电压而引发的安全隐患，保证充电周期中的充电安全。
在一种可能实现的方式中，所述处理单元，具体用于：获取多个时间点分别对应的所述第二电压的电压值；对比多个时间点中每个时间点对应的所述第二电压的电压值和上述预设电压值之间大小，获得所述多个时间点中每个时间点分别对应的电压差值；基于所述多个时间点中每个时间点分别对应的电压差值，确定所述调节信息。
在本申请实施例中，根据获取的多个第二电压的电压值与上述预设电压值之间的差值，确定校准充电电压的调节信息，可以减少仅获取一个充电电压值时的误差，从而在后续校准过程中，使得调节的充电电压更准确。其中，多个时间点中每相邻两个时间点之间的时间间隔相等。
在一种可能实现的方式中，上述检测单元，还用于检测第一电流的电流值，并发送至上述处理单元，其中，上述第一电流为上述电池模块在上述预设的第一电压下相应的充电电流；上述处理单元，具体用于基于上述第二电压的电压值和第一电流的电流值，确定上述调节信息。
在本申请实施例中，检测单元不仅用于检测当前预设的第一电压下电池模块对应的充电电压的电压值(第二电压的电压值)还用于检测当前的第一电流的电流值。处理单元还可以基于获取到的第二电压的电压值和第一电流的电流值，确定上述调节信息。另外该检测单元还可以是电量计。
在一种可能实现的方式中，上述调节信息包括第二调节量，上述第二调节量为上述预设的第一电压随上述第一电流变化的变化量，且与第一电流正相关。
在本申请实施例中，充电控制单元可以包括充电芯片，通过该充电芯片输出的第四电压向电池模块充电，其中，该充电芯片与电池模块之间可以通过如导线等连接，由于导线存在阻抗，因此该充电芯片输出的第四电压会被上述阻抗分压。也即，该预设的第一电压可以理解为第四电压经过上述阻抗后输入上述电池模块的电压。因此，充电装置可以基于上述阻抗分压的电压对充电芯片输出的第四电压进行补偿，进而实现对预设的第一电压的调节。另外 由于恒压充电阶段需要保持电池模块的充电电压稳定，所以随着充电时间增加，电池模块电量逐渐升高，第一电流会逐渐减小，也因此上述阻抗分压的电压也会逐渐减小。故针对预设的第一电压的调节信息中的第二调节量为预设的第一电压随上述第一电流变化的变化量，且与第一电流正相关。
第二方面，本申请实施例提供了一种恒压充电电压调节方法，应用于电子设备，所述电子设备包括电池模块，所述电池模块在充电过程中对应有恒压充电阶段；在所述恒压充电阶段时，所述方法包括：通过充电控制单元向所述电池模块输出预设的第一电压；通过处理单元获取上述电池模块的第二电压的电压值，并基于所述第二电压的电压值，获得所述预设的第一电压对应的调节信息。其中，上述第二电压为上述电池模块在上述预设的第一电压下获得的实际充电电压；通过所述充电控制单元基于所述调节信息，对所述预设的第一电压进行调节，向所述电池模块输出第三电压，上述第三电压为调节后的第一电压。
在一种可能实现的方式中，所述第三电压的电压值大于所述预设的第一电压的电压值。
在一种可能实现的方式中，所述方法还包括：通过检测单元检测所述第二电压的电压值，并发送至所述处理单元。
在一种可能实现的方式中，所述检测单元为电量计；所述通过检测单元检测所述第二电压的电压值，并发送至所述处理单元，包括：通过所述电量计检测所述第二电压的电压值，并发送至所述处理单元。
在一种可能实现的方式中，所述通过所述电量计检测所述第二电压的电压值，并发送至所述处理单元，包括：在所述电子设备对应的温度处于预设温度范围内时，通过所述电量计检测所述第二电压的电压值，并发送至所述处理单元。
在一种可能实现的方式中，所述调节信息包括第一调节量，所述第一调节量为所述第二电压的电压值与预设电压值之间的差值。
在一种可能实现的方式中，上述基于所述第二电压的电压值，获得所述预设的第一电压对应的调节信息，包括：基于上述第二电压的电压值和上述预设电压值，获得上述预设的第一电压对应的调节信息。
在一种可能实现的方式中，所述基于上述第二电压的电压值和上述预设电压值，获得上述预设的第一电压对应的调节信息，包括：对比多个时间点中每个时间点对应的所述第二电压的电压值和上述预设电压值之间大小，获得所述多个时间点中每个时间点分别对应的电压差值；基于所述多个时间点中每个时间点分别对应的电压差值，确定所述调节信息。
在一种可能实现的方式中，所述方法还包括：通过所述检测单元检测第一电流的电流值，并发送至所述处理单元，其中，所述第一电流为所述电池模块在所述预设的第一电压下对应的充电电流；所述基于所述第二电压的电压值，获得所述预设的第一电压对应的调节信息，包括：基于所述第二电压的电压值和第一电流的电流值，确定所述调节信息。
在一种可能实现的方式中，所述调节信息包括第二调节量，所述第二调节量为所述预设的第一电压随所述第一电流变化的变化量，且与第一电流正相关。
第三方面，本申请实施例提供一种电子设备，电子设备包括电池模块和如上述第一方面和与第一方面相关实施例所述的充电装置；该充电装置与该电池模块电连接。
第四方面，本申请实施例提供一种计算机可读存储介质，用于储存为上述第一方面提供 的一种充电装置所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
第五方面，本申请实施例提供了一种计算机程序，该计算机程序包括指令，当该计算机程序被计算机执行时，使得计算机可以执行上述第一方面中的充电装置所执行的流程。
第六方面，本申请提供了一种芯片系统，该芯片系统包括处理器和充电控制单元，用于支持电子设备实现上述第一方面中所涉及的功能，例如，生成或处理上述充电方法中所涉及的信息。在一种可能的设计中，所述芯片系统还包括存储器，所述存储器，用于保存数据发送设备必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1是本申请实施例提供的一种现有电子设备中电池充电的电路示意图。
图2是本申请实施例提供的一种电子设备结构示意图。
图3是本申请实施例提供的一种充电装置的结构示意图。
图4是本申请实施例提供的一种恒压充电阶段电池对应的电流电压示意图。
图5是本申请实施例提供的一种档位信息的示意图。
图6是本申请实施例提供的另一种档位信息的示意图。
图7是本申请实施例提供的一种基于上述图4检测恒压充电阶段电池对应电流和电压的示意图。
图8是本申请实施例提供的另一种充电装置的结构示意图。
图9是本申请实施例提供的一种电阻档位信息的示意图。
图10是本申请实施例提供的一种充电方法的流程示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例进行描述。
本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象，而不是用于描述特定顺序。此外，术语“包括”和“具有”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、系统、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
应当理解，在本申请中，“至少一个(项)”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，用于描述关联对象的关联关系，表示可以存在三种关系，例如，“A和/或B”可以表示：只存在A，只存在B以及同时存在A和B三种情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，“a和b”，“a和c”，“b和c”，或“a和b和c”，其中a，b，c可以是单个，也可以是多个。
在本文中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。本领域技术人员显式地和隐式地理解的是，本文所描述的实施例可以与其它实施例相结合。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
首先，为了便于理解本申请实施例，以下具体分析本申请实施例所需要解决的技术问题以及应用场景。
现有技术中，现有的电子设备在与充电适配器(如：充电器)连接之后，充电适配器可以通过电子设备中的充电芯片给电池充电。其中，使得在后续充电过程中，充电芯片可以在相关阶段控制对应的电压或电流保持不变。例如：在恒压充电阶段时，该充电芯片可以向电池输出恒定的充电电压，并随着充电时间的增加，电池模块的电压也逐渐升高接近充电电压，在恒压充电阶段下，充电电流小于预设电流值时，即可认为该电池被充满电，从而充电过程截止。
其中，请参考附图1，图1是本申请实施例提供的一种现有电子设备中电池充电的电路示意图。如图1所示，充电芯片向电池模块输出充电电压，该输出的充电电压V1会由于等效电阻R(即，充电过程中存在的阻抗)发生压降，最终施加至电池模块的充电电压V2要小于充电芯片输出的充电电压V1。即由图1所示电路可知，充电芯片输出的充电电压V1、电池充电电压V2，与充电电流I、等效电阻R之间的关系，可以用如下公式表示：V1＝V2+V3＝V2+I*R，也即：V2＝V1-I*R。其中，充电芯片输出的充电电压V1是充电芯片基于预设满充电压(也可以理解为预先配置的电池满充电压)输出的电压。
另外，由于电子设备内部的板级(printed circuit board，PCB)走线、电池连接器或充电连接导线等中存在的额外阻抗，使得充电芯片输出的充电电压V1会与电池模块实际获得的充电电压V2存在偏差。另外，在恒压充电阶段下，当充电电流小于预设电流值时，即可认为该电池被充满电，从而充电过程截止。
因此，为了控制充电过程中电池的实际充电电压与预设的满充电压一致。现有技术通常针对以下两个方面对充电芯片输出的充电电压进行调节：
(一)针对充电芯片中预设满充电压
充电芯片中预设满充电压即是在充电芯片预先配置的电池充电电压。在充电过程中的阻抗为0时，充电芯片输出的充电电压可以全部输出至电池模块(即，V1＝V2)，但此时充电芯片输出的充电电压V1往往会因为诸如板级应力、温度、器件老化等因素与充电芯片中预先配置的电池充电电压(预设满充电压)不一致，进而导致在实际充电过程中电池模块的充电电压无法达到预设的满充电压，从而使得电池模块最终充电截止时的电量无法达到理想的满容量。针对该方面现有技术往往通过以下两种方式对充电芯片中预先配置的电池充电电压进 行调节，其中：
方式一：在充电芯片生产后可以通过芯片集成电路自动测试装备(Automatic Test Equipment，ATE)可以实现对充电芯片控制的恒压充电阶段的恒压充电电压进行校准，使得校准后的充电芯片在恒压充电接单控制恒压充电电压时可以尽可能的接近预设满充电压。其中，在校准过程中，芯片集成电路自动测试装备配备有高精密电源(误差在±1mV范围内)，以测试出充电芯片在恒压充电阶段控制的恒压充电电压的实际值与目标值(即，预设的满充电压)之间的差值，根据该差值计算修调码，进而将修调码可以烧写进芯片内部，以通过该修调码在实际充电过程中对充电电压进行补偿，而且由于该修调码是直接被烧写进芯片内部的，因此可以在实际充电过程中上述补偿可以永久生效。
但是上述方式一有以下缺点：
1、在电子设备的制造过程中，充电芯片上板后恒压充电电压精度会因为各种连接关系(即，存在有连接阻抗)以及生产工艺等因素产生畸变，此前对该充电芯片进行校正的修调码并不能解决该问题，需要在预先校准门限(即，校准误差)中预留该偏差范围，从而导致在电子设备实际应用过程中，充电电压不能够达到预设的满充电压。
2、电子设备在充电过程中，温度会发生变化，从而导致充电芯片在全温环境下工作时会产生温漂误差，该温漂误差也会导致恒压充电阶段的恒压充电电压不能够达到预设的满充电压，同样也不能够通过先前的芯片集成电路自动测试装备进行校准，也需要在预先校准门限中预留该偏差范围。
因此，以智能终端为例，上述两种偏差(充电芯片畸变和温漂误差)要求ATE预先校准门限电压至少留有约±0.5％裕量，约±25mV，按下限计的算，实际的电池满充电压减少50mV，约合容量减少5％。
方式二：在电子设备的生产线上，增加相关的校准装置进行校准。例如：在电子设备的生产线上，外接一套程控电源模拟电池，模拟充电流程，测试实际充电截止电压值(相当于恒压充电电压)，再计算电池标称值和实际充电截止电压值的差值，根据该差值调整寄存器配置，对电子设备的充电芯片进行校准调修，再次功能复测后可以出厂使用。
但是上述方式二有以下缺点：
1、产线上需要校准工位和复测工位等生产资源，会造成测试时间长，成本高。
2、全温度范围内温漂误差较大，在生产线校准时也需要考虑实际使用时温度的影响，在预先校准门限上留有较大裕量。
3、芯片在使用后期会产生老化畸变，在生产线上的校准方式并不能解决该问题，只能在预先校准门限中预留该偏差范围。
因此，以智能终端为例，上述偏差要求预先校准门限电压至少留有约±0.3％裕量，约±15mV，按下限计算，实际的电池满充电压减少30mV，约合容量减少3％。
综上所述，现有技术中无法保证在实际充电过程中，充电芯片输出的充电电压达到理想充电电压。
(二)针对充电芯片中预先配置的阻抗
其中，在充电过程中的实际阻抗(相当于图1所示的等效电阻R)不为0时，会由于实际阻抗存在只有部分充电电压给电池模块充电，充电芯片输出的充电电压无法全部输出至电池模块。现有的充电芯片为了解决充电过程中存在有额外阻抗导致电池模块充电电压被分压的问题，在恒压充电阶段，通常会采用IR补偿的方式，对充电过程中的阻抗进行电压补偿， 尽可能的使得充电芯片中输出的充电电压全部输出至电池模块。其中，该IR补偿的方式具体是指：充电芯片根据被预先配置的补偿电阻R值(即，相当于预设的等效电阻R值)和实际充电过程中的电流值，计算得到充电过程的阻抗对应的补偿电压值，在充电芯片的预设满充电压的基础上，按照上述补偿电压值，将充电芯片实际输出电压抬高，使得输出至电池模块的充电电压更接近预设满充电压。
但是在实际充电过程中，由于板级差异、器件离散性等原因会造成充电过程的实际阻抗会在一定范围内波动，因此为了防止过补偿导致电池出现过充等安全问题，补偿电阻R值通常按较低值配置甚至并不配置，这样就导致对于存在有阻抗或实际阻抗偏大的电子设备来说，电池模块的实际充电电压仍低于预设满充电压，从而使得电池电量仍然无法达到理想的满容量。
因此，为了解决上述两种缺陷，尽可能的保证在充电过程中恒压充电阶段的电池的实际充电电压与预设的满充电压一致。本申请实施例提供了一种在电子设备中每次充电过程中自动调节恒压充电电压的充电装置。其中，该充电装置包括处理单元和充电控制单元，该处理单元，用于在上述恒压充电阶段时，获取第二电压的电压值，第二电压为电池模块在预设的第一电压下获得的实际充电电压；基于第二电压的电压值，获得预设的第一电压对应的调节信息；上述充电控制单元，用于基于上述调节信息，对上述恒压充电阶段输出的充电电压进行调节，然后以调节后的充电控制单元输出的充电电压向上述电池进行充电。该装置可以在恒压充电阶段根据电池模块的实际充电电压对充电装置输出的充电电压进行调节，使得本申请实施例的实际充电电压在安全范围内更加接近预设的满充电压，保证电子设备的用电续航和用电安全。
需要说明的是，上述实施例及以下相关实施例提及的充电芯片是电子设备中用于控制电源向电池充电的装置，还可以用于控制充电过程中的充电电压和/或充电电流，还可以控制充电开始和充电结束等。
还需要说明的是，本申请实施例涉及到的电子设备可以是包括有可充电电池的移动电源(如：充电宝)；移动终端，例如：智能可穿戴设备(如：智能眼镜、智能手表、运动手环、耳机等)、笔记本电脑、手机、平板电脑、相机、无线鼠标、无线键盘等；智能家居，例如：扫地机器人、智能音箱、收音机、便携式投影仪、电动牙刷、电动剃须刀、风扇、充电式照明设备(如：手电筒、台灯、打光灯等)等；电动汽车，例如：电动车(如：平衡车、电动轮椅、高尔夫球车、电动自行车、电动叉车等)、无人机、移动机器人等。对此，本申请实施例不作具体的限制。
还需要说明的是，上述可充电电池可以为铅酸电池、镍镉电池、镍铁电池、镍氢电池、锂离子电池等。对可充电电池的材质和容量，本申请实施例不作具体的限制。
基于上述提出的技术问题以及本申请中对应的应用场景，也为了便于理解本申请实施例，下面先对本申请实施例所基于的其中一种电子设备进行描述。请参阅图2，图2是本申请实施例提供的一种电子设备结构示意图。如图2所示，本申请中的电子设备01可以包括图2中的充电装置100和电池模块200，其中，电子设备01可以通过充电适配器(未图示)与电源02连接，该电源02为电子设备01中的电池模块200提供电量。其中，
电池模块200为可充放电的电池，可向电子设备01的各种组件提供电力。在一个实施例中，电池模块200可以为可再充电铅酸电池、镍镉电池、镍铁电池、镍氢电池、锂离子电池 等。这种电池的一个或多个电池组可被配置为电源为电子设备01的各种组件提供电力。另外，本申请实施例对电池模块200的容量不作具体的限制，例如：电池模块200的容量可以为20000mAh、10000mAh、4400mAh、100mAh等。其中，该电池模块200的容量与电池模块200的满充电压相关。
充电装置100，可以从充电适配器(如：充电器)接收电源02的充电输入，并向电池模块200进行充电。充电装置100可以控制充电过程中的充电电压和充电电流的大小；还可以在充电截止(End Of Charge，EOC)条件满足时，停止向电池充电，并指示该电池模块充电完成。另外，在本申请实施例中，充电装置100可以在所述恒压充电阶段时，以预设的第一电压向电池模块充电，该预设的第一电压为充电装置基于预设满充电压向电池模块输出的电压。还可以根据电池模块的实际充电电压的反馈，调节上述恒压充电阶段预设的充电电压，以保证电子设备在用电安全的同时提高电子设备的续航能力。其中，针对充电装置100调节恒压充电阶段的充电电压的具体描述，可以对应参考下述相关的装置实施例，本申请实施例在此暂不赘述。
需要说明的是，尽管图2功能性地图示了电子设备中的充电装置和电池模块，但是本领域的普通技术人员应该理解该充电装置实际上可以包括存储在相同或不同的物理外壳内的多个处理器、或控制硬件电路。因此，对充电装置的引用将被理解为包括对可以或者可以不并行操作的处理器或计算机或存储器的集合的引用。不同于使用单一的处理器来执行此处所描述的步骤，诸如充电装置内的一些组件每个都可以具有其自己的处理器，所述处理器只执行与特定于组件的功能相关的计算。
可以理解的是，图2中的电子设备架构示意图只是本申请实施例中的一种示例性的实施方式，本申请实施例中的电子设备架构包括但不仅限于以上电子设备架构。
基于上述图2所示的电子设备为例，本申请实施例提供一种应用于上述电子设备中的充电装置100，请参见图3，图3是本申请实施例提供的一种充电装置的结构示意图，如图3所示，该电子设备01的充电装置100可以包括：处理单元101和充电控制单元102，还可以包括检测单元103。
处理单元101相当于电子设备中的处理单元、处理芯片或片上系统(System-on-a-chip，SOC)等。在本申请实施例中，处理单元101，用于在所述恒压充电阶段，获取电池模块的第二电压的电压值，并基于所述第二电压的电压值，确定预设的第一电压对应的调节信息。其中，所述第二电压为所述电池模块200在所述预设的第一电压下获得的实际充电电压。处理单元101，还可以用于将该调节信息发送至充电控制单元102中。其中，关于处理单元101获取第二电压的方式可以对应参考下述实施例针对检测单元103的相关描述，本申请实施例在此暂不赘述。
在其他一些实施例中，上述处理单元101功能也可以设置于充电控制单元102中，即处理单元101也可以是充电控制单元中的一个处理模块，对此本申请实施例不做具体的限定。
充电控制单元102用于从充电适配器(如：充电器)接收电源02的充电输入，并向电池模块200输出充电电压，以给电池模块200进行充电。在本申请实施例中，充电控制单元102还用于在所述恒压充电阶段时，向所述电池模块输出预设的第一电压；并在接收到调节信息后，基于所述调节信息，对所述恒压充电阶段输出的所述预设的第一电压进行调节，向所述电池模块200输出第三电压，其中，该第三电压为调节后的第一电压。其中，充电适配器为有线充电适配器。在一些有线充电的实施例中，充电控制单元102可以通过如：USB接口、 USB Type C接口、Lightning接口、Combo Connector接口、联合充电系统(Combined Charging System，CCS)等接口接收有线充电适配器的充电输入，对此本申请实施例并不做具体的限定。
可选的，充电装置向电池模块输出的第三电压大于其输出的预设的第一电压，即，第三电压的电压值大于上述预设的第一电压的电压值。可以理解的是，充电装置是将第一电压向调高的方向调节，使得电池对应的第二电压更接近预设满充电压，从而提高了充电电压的精度，提高了满充电池的续航能力。因此，请参考附图4，图4是本申请实施例提供的一种恒压充电阶段电池对应的电流电压示意图。如图4所示，第三电压使得电池对应的实际充电电压(即，第二电压)更接近预设的满充电压。即对应的，在充电控制单元102向电池模块输出第三电压时电池模块接收到的实际充电电压值要大于向电池模块输出预设的第一电压时电池模块接收到的实际充电电压值。也因此，以第三电压向电池模块充电，在充电结束后，满充的电池模块的容量要高于以预设的第一电压向电池模块充电结束后满充的电池模块的容量，大大的加强了电子设备的续航。另外，也如图4所示，在本申请实施例中，电子设备的电池模块在恒压充电阶段对应的充电电压会发生变化。
需要说明的是，若实际充电电压(第二电压)超过电池模块对应的预设满充电压，则可能会造成安全隐患，因此，本申请实施例需要在电池对应的安全范围内对充电电压进行调节。
可选的，上述充电装置还包括检测单元103；上述检测单元103，用于检测上述第二电压的电压值，并发送至上述处理单元101。检测单元103可以用于测量电池模块200的电池电压、实际充电电压和第一电流等，并还可以将测量到的相关数据(如：充电电压、充电电流等)发送至处理单元101中。其中，检测单元103可以是高精度的电压电流测量装置。在一些实施例中，还可以用于监测电池容量，电池循环次数，获取电池健康状态(漏电，阻抗)等参数。另外，该检测单元103可以是独立于充电控制单元102的器件或硬件电路(如图2所示)，还可以是充电控制单元102内部的一个测量模块或部分硬件电路，对此，本申请实施例并不做具体的限制。
可选的，上述检测单元103可以为电量计；该电量计，用于检测上述第二电压的电压值，并发送至上述处理单元。检测单元103可以为电子设备中的电量计，该电量计用于测量电池模块的相关参数(如：电池充电电流、电池实际充电电压等)，因此，该电量计可以检测上述第二电压的电压值，并发送至上述处理单元。在本申请实施例中，通过利用电子设备中的现有器件检测第二电压的电压值，可以节省电子设备硬件空间和成本。
可选的，上述电量计，用于在上述电子设备对应的温度处于预设温度范围内时，检测上述第二电压的电压值，并发送至上述处理单元。电子设备的温度的变化会影响到电量计获取的第二电压的精度，请参考下述表1，表1是本申请实施例提供的一种电量计在不同温度下的精度示意表。
表1：电量计的精度示意表
如上述表1所示，电量计工作条件是指：电量计的电压测量范围在3V-4.4V，并且当电子设备的温度范围在25℃±10℃时，电量计电压检测的精度偏差可以达到±0.5mV的高精度； 当电子设备的温度范围在-25℃～85℃时，电量计电压检测的精度偏差可以达到±10mV的精度；另外，电量计的电流测量范围大于等于200mA，当电子设备的温度范围在-25℃～85℃时，电流检测可以达到±1.5％的高精度。
因此，在通过电量计获取第二电压的电压值前，还需要确定当前电子设备对应的温度，在电子设备对应的温度处于预设温度范围内时，该电量计获取的充电电压的电压值是可信的。也因此，在后续调节过程中，调节后的充电电压精度更准确。
其中，关于电子设备温度的检测可以通过热敏电阻来实现，该热敏电阻在电子设备的温度发生变化时，其电阻的大小也会随之变化，从而在流经该热敏电阻的电流不变的情况下，根据欧姆定律，其施加在该热敏电阻上的电压也会随之变化。本申请实施例可以通过监测热敏电阻对应的电压大小，从而确定当前热敏电阻的阻值，在根据该阻值大小确定该阻值对应的温度大小，从而实现电子设备的温度检测。
可选的，上述调节信息包括第一调节量，上述第一调节量为第二电压的电压值与预设电压值之间的差值。其中，调节信息是针对预设的第一电压的调节信息，该预设电压值可以理解为预设满充电压的电压值，若确定电池模块在该预设第一电压下接收到的实际充电电压达不到预设满充电压，则可以根据该实际充电电压调节预设的第一电压，从而使得电池模块接收到的实际充电电压(第二电压)也随之提升至上述预设满充电压。例如：对预设的第一电压增加10mV则电池模块接收到实际充电电压(第二电压)也随之增加10mV。
又例如，上述充电控制单元102可以包括充电芯片，上述充电芯片的输出端与上述电池模块的输入端连接，即，上述预设的第一电压可以理解为上述充电芯片根据预设满充电压向电池模块输出的电压。也因此，在理想状态(不考虑上板差异影响、阻抗等因素或理想矫正充电芯片后)下，充电芯片可以向电池模块完全输出预设满充电压，则电池模块的实际充电电压可以达到预设满充电压，即，预设的第一电压(预设满充电压)＝第二电压。但是，在实际应用过程中，充电芯片上板后由于误差因素(如：充电芯片畸变和温漂误差等)的影响，充电芯片基于预设满充电压实际输出的充电电压会与预设满充电压存在偏差，即，预设的第一电压(预设满充电压)>第二电压。因此，上述第一调节量是在预设的第一电压的基础上补偿第二电压与预设满充电压之间的差值。
可选的，所述第一调节量可以包括对电压(如：预设满充电压)进行调节的档位信息，该档位信息对应的电压值对应第三电压的电压值。在一些可能的实施例中，该档位信息可以包括粗调档位信息和细调档位信息，其中，粗调档位信息中相邻档位之间的电压调节幅度大于细调档位信息中相邻档位之间的电压调节幅度。例如：请参考附图5，图5是本申请实施例提供的一种档位信息的示意图。如图5所示，标识信息(或地址信息)010100指示的粗调档位4400mV对应于电压4400mV，该标识信息(或地址信息)010100指示的粗调档位4400mV还对应有20个细调档位，经过细调功能，可扩展每个粗调档位±10mV的调节范围，即4390mV～4410mV。则第一调节量携带的档位信息可以包括调节后的电压分别对应的粗调档位信息和细调档位信息。
可选的，所述第一调节量还可以包括步进的标识信息和步进的调节数量，该步进为充电装置支持调节电压(如：预设满充电压)的幅度，可以包括：20mV/step(20mV每步进)、10mV/step、5mV/step和1mV/step等。即意味着，当电压调节幅度为20mV/step时，在调节第四电压时，可以确定单次可调节的电压幅度为20mV。例如：当前第四电压的大小是4400mV，充电装置确定的调节后的第四电压的大小是4425mV，则充电装置需要在当前第四电压的基础上向上调节1个20mV/step和5个1mV/step的电压幅度。此时，第一调节量可以直接包括 20mV/step和1mV/step分别对应的标识信息，以及20mV/step和1mV/step分别对应的调节数量，其中，请参考附图6，图6是本申请实施例提供的另一种档位信息的示意图，如图6所示：20mV/step的档位中增加1个20mV对应的是上述图5所示的粗调档位信息010101的4420mV；1mV/step的档位中增加5个1mV对应的是上述图5所示的细调档位信息4425mV。
需要说明的是，本申请实施例对第一调节量的具体携带的信息，以及调节电压的调节方式不作具体的限制。
可选的，处理单元101可以用于基于上述第二电压的电压值和上述预设电压值之间的大小关系，获得上述预设的第一电压对应的调节信息。基于第二电压的电压值(实际充电电压的电压值)和预设电压值(即，预设满充电压的电压值)之间的大小关系，确定调节预设的第一电压，可以使得电池最终充电截止时的电量更接近理想的电池满容量，从而提高电池的续航能力。而且可以避免因实际充电电压大于电池的预设满充电压而引发的安全隐患，保证充电周期中的充电安全。
可选的，处理单元101，具体用于：获取多个时间点分别对应的所述第二电压的电压值；对比多个时间点中每个时间点对应的所述第二电压的电压值和上述预设电压值之间大小，获得所述多个时间点中每个时间点分别对应的电压差值；基于所述多个时间点中每个时间点分别对应的电压差值，确定所述调节信息。根据获取的多个第二电压的电压值与上述预设电压值之间的差值，确定校准充电电压的调节信息，可以减少仅获取一个充电电压值时的误差，从而在后续校准过程中，使得调节的充电电压更准确。其中，多个时间点中每相邻两个时间点之间的时间间隔相等。例如：请参考附图7，图7是本申请实施例提供的一种基于上述图4检测恒压充电阶段电池对应电流和电压的示意图。电量计可以在上述电子设备对应的温度处于预设温度范围内时，周期性的检测上述第二电压的电压值，并发送至上述处理单元。电子设备的温度的变化会影响到电量计获取的第二电压的精度，而周期性的获取多个第二电压的电压值，对比该多个第二电压的电压值与预设电压值之间的大小关系，获得多个差值，再根据该多个差值的平均值确定的调节信息，精度更高。
可选的，在电池模块的充电过程进行到恒压充电阶段时，充电控制单元102可以提示检测单元103检测电池模块的实际充电电压(即第二电压)的电压值，基于上述实际充电电压的电压值和预设电压值，获得上述预设的第一电压对应的调节信息，即调节信息中的第一调节量。因此，本申请实施例可以使得电池最终充电截止时的电量更接近理想的电池满容量，从而可以使得电池的实际满充电压更接近预设满充电压，提高电池的续航能力。而且可以避免因实际充电电压大于电池的预设满充电压而引发的安全隐患，保证充电周期中的充电安全。
可选的，上述检测单元103，还用于检测第一电流的电流值，并发送至上述处理单元，其中，上述第一电流为上述电池模块在上述预设的第一电压下相应的充电电流；上述处理单元，具体用于基于上述第二电压的电压值和第一电流的电流值，确定上述调节信息。检测单元103不仅用于检测当前预设的第一电压下电池模块对应的充电电压的电压值(第二电压的电压值)还用于检测当前的第一电流的电流值。处理单元101还可以基于获取到的第二电压的电压值和第一电流的电流值，确定上述调节信息。另外该检测单元还可以是电量计。
可选的，上述调节信息包括第二调节量，上述第二调节量为上述充电芯片输出的上述第四电压随上述充电电流变化的变化量，且与充电电流正相关。充电控制单元可以包括充电芯片，通过该充电芯片输出的第四电压向电池模块充电，其中，该充电芯片与电池模块之间可以通过如导线等连接，由于导线存在阻抗，因此该充电芯片输出的第四电压会被上述阻抗分压。也即，该预设的第一电压可以理解为第四电压经过上述阻抗后输入上述电池模块的电压。 因此，充电装置可以基于上述阻抗分压的电压对充电芯片输出的第四电压进行补偿，进而实现对预设的第一电压的调节。另外由于恒压充电阶段需要保持电池模块的充电电压稳定，所以随着充电时间增加，电池模块电量逐渐升高，第一电流会逐渐减小，也因此上述阻抗分压的电压也会逐渐减小。故针对预设的第一电压的调节信息中的第二调节量为预设的第一电压随上述第一电流变化的变化量，且与第一电流正相关。
可以理解的是，上述充电控制单元102可以包括充电芯片，上述充电芯片的输出端与上述电池模块的输入端连接。由于电子设备内部的板级(printed circuit board，PCB)走线、电池连接器或充电连接导线等中存在的额外阻抗，使得充电芯片输出的充电电压会与电池模块实际获得的充电电压存在偏差(如上述图1所示的相关实施例)。因此，在本申请实施例中，可以将充电过程中存在的额外阻抗全部等同为等效电阻，上述充电芯片的输出端通过该等效电阻与上述电池模块的输入端连接。
也因此，请参考附图8，图8是本申请实施例提供的另一种充电装置的结构示意图，如图8所示，该充电控制单元102还可以包括充电芯片111和等效阻抗112。等效阻抗112可以包括第一端A和第二端B，其中，等效阻抗112的第一端A与充电芯片111的输出端连接，等效阻抗112的第二端B与电池模块200的输入端连接。也因此，上述预设的第一电压VB0为VA0经过上述等效阻抗112后输入上述电池模块200的电压，上述VA0为上述充电芯片111根据预设满充电压V0理论上输出的电压，即，此时VA0可以理解为V0，VA0＝V0。因此，在充电芯片111考虑到等效阻抗112分压的情况下，采用上述IR补偿的方式，在充电芯片的预设满充电压V0的基础上，按照等效阻抗112对应的补偿电压值，将充电芯片的输出电压抬高，则上述预设的第一电压VB0和VA0之间的关系用公式表达为：VA0＝VB0+I*R0(其中，I为第一电流的电流值，第一电流为所述电池模块在所述预设的第一电压下对应的充电电流；R0为等效阻抗的预先配置值)。
另外，该等效阻抗112等效于充电芯片于电池模块之间存在的实际阻抗(相当于上述图1所示的等效电阻R)，即，充电芯片与电池模块之间需要通过如导线等连接，该导线存在着线路阻抗；而且在导线与电池模块之间的接入端，以及导线和充电芯片的接出端也都存在有阻抗，因此充电芯片输出充电电压需要经过一系列的阻抗降压后才能作用于该电池模块，因此，上述等效阻抗112等效于充电芯片111与电池模块200之间的全部阻抗。
首先，需要说明的是，如上述图8所示，在实际应用过程中，充电芯片111上板后由于误差因素(如：充电芯片畸变和温漂误差等)的影响，充电芯片111基于预设满充电压输出的实际电压VA会与预设满充电压V0存在偏差，即，第四电压VA可以理解为上述充电芯片111实际输出的电压。第二电压为电池模块200的实际充电电压，即，第二电压VB为第四电压VA经过上述等效阻抗112后输入上述电池模块的充电电压值。充电芯片111考虑到等效阻抗112的实际分压情况，采用上述IR补偿的方式，按照等效阻抗112实际对应的补偿电压值，将充电芯片的实际输出电压(即：实际的第四电压VA)抬高，则上述第二电压VB和第四电压VA之间的关系可以用公式表达为：VA＝VB+I*R1(R1为等效阻抗的实际电阻值)。
可以理解的是，上述预设的第一电压VB0，上述VA0分别为第二电压VB，第四电压VA的理论值，即，在不存在上板误差、等效阻抗112的预设配置值与实际电阻值相等的情况下，可以认为预设的第一电压VB0等于第二电压VB，上述VA0等于第四电压VA。因此，上述第一调节量可以理解为上述充电芯片输出的固定变化量。该固定变化量是针对充电芯片中预设满充电压进行调节的信息，尽可能的使第二电压的电压值VB与预设满充电压V0一致。对充电芯片111中预设满充电压V0进行增加可以使得第四电压的实际电压值VA也随之增加，进 而在等效阻抗的分压比例(即电阻值)不变的情况下，第二电压的电压值VB也随之增加，而且该增加的电压大小(即第一调节量)不会随充电电流的变化而变化，因此，该第一调节量可以理解为固定变化量，调节的作用是在原充电芯片输出电压的基础上实现固定值偏差。
其次，需要说明的是，在恒压充电阶段，充电控制单元102需要保持针对电池模块200的充电电压不变(即，第二电压VB不变)，所以随着电池端的电池电压逐渐增加，针对电池模块200的充电电流是逐渐减小的，因此，如上述图8所示的实施例中的公式所示：VA＝VB+I*R1，由于等效阻抗112的阻值不会发生变化，所以实际的第四电压VA和第二电压的电压值VB的压差逐渐减小，因此，本申请实施例可以针对等效阻抗112实际电阻值的大小对电池模块的充电电压进行补偿调节时，其第二调节量的大小是实时变化的，且与充电电流正相关。
其次，由于充电芯片111输出的第四电压VA需要经过上述等效阻抗112(该等效阻抗的大小为实际电阻的大小，且大于0)后，才输入上述电池模块200，则可以理解的，充电芯片111输出的第四电压VA需要对上述等效阻抗112分压进行补偿，才能使第二电压VB达到预设满充电压(也即理想的电池满充电压)。因此，故当I为电池充电电流值，第四电压VA为充电芯片111实际输出电压值，R0为等效阻抗112的预先配置值，Vmax为考虑了安全阈值后的预设满充电压的电压值(即预设电压值)，R1为等效阻抗112实际阻抗值，VA-Rint为R0值为0时的充电芯片111实际输出电压值，VA-Rint也可以理解为是充电芯片111的预设满充电压V0在上板后的真实电压值时，上述变量满足如下关系式：
VA＝VA-Rint+I*R0；VA＝VB+I*R1(上述图8所示的实施例中的公式)；
根据上述公式，可以求得电池模块实际充电电压VB的表达式如下：
VB＝VA–I*R1＝VA-Rint+I*(R0–R1)＝VA-Rint+I*δ，其中，δ＝R0–R1。
由上述关系式可以对等效阻抗对应的修调值进行计算。
Vx、Vx-1分别为前后两次采集到的电池模块对应的充电电压(即，第二电压的电压值VB)，Ix、Ix-1分别为前后两次采集到的电池模块在Vx、Vx-1下对应的充电电流。
Vx＝VA-Rint+Ix*δ；Vx-1＝VA-Rint+Ix-1*δ；
由上述两个公式可知，可以求得默认配置的R0与实际R1的差值δ为δ＝ΔVx/ΔIx；其中ΔVx＝Vx-Vx-1、ΔIx＝Ix-Ix-1。
综上所述，本申请实施例中的处理单元101可以根据至少两组的第二电压的电压值和充电电流的电流值，获得电子设备中的等效阻抗112的实际电阻值R1与充电芯片111中预先配置的等效阻抗112的电阻值R0的差值，并根据该差值对充电芯片111输出的第四电压进行补偿，使得第二电压的电压值VB经过等效阻抗112的分压后达到预设满充电压。例如：恒压充电阶段中，获取两组电池模块充电电压和充电电流，计算确定阻抗补偿的差值，以确定充电控制单元针对阻抗的电压补偿值。
可选的，所述第二调节量可以包括对等效阻抗112分压的电压进行调节的电阻档位信息，该电阻档位信息对应的电阻值为电子设备中等效阻抗112的实际电阻值，以校正充电芯片111中原先配置的电阻值。在一些可能的实施例中，该电阻档位信息也可以包括电阻粗调档位信息和电阻细调档位信息，其中，电阻粗调档位信息中相邻档位之间的电阻调节幅度大于电阻细调档位信息中相邻档位之间的电阻调节幅度。例如：请参考附图9，图9是本申请实施例提供的一种电阻档位信息的示意图。如图9所示，标识信息(或地址信息)011指示的电阻粗调档位45mohm(毫欧姆)对应的电阻值为45mohm，该标识信息(或地址信息)011指示的电阻粗调档位45mohm还对应有15个电阻细调档位，经过细调功能，可扩展每个粗调档位±15mohm的调节范围，即38～52mohm。则第二调节量携带的档位信息可以包括调节后的电 压分别对应的电阻粗调档位信息和电阻细调档位信息。
可以理解的是，第二调节量实际为比例系数调节，调节的作用是在原充电芯片输出电压的基础上实现随充电电流变化的电压偏差值，因此，本申请实施例对第二调节量的具体携带的信息，以及调节电压的调节方式不作具体的限制。
需要说明的是，在一次充电周期中，处理单元向充电控制单元发送的调节信息可以同时包括第一调节量和第二调节量，也可以分别包括第一调节量和第二调节量，对此，本申请实施例不做具体的限制。
还需要说明的是，上述对恒压充电阶段的充电电压的调节需要根据电池电压的安全阈值约束，判断是否满足校准条件，若满足条件，则可以进行调节。若不满足，则在本次充电周期中放弃对恒压充电阶段的充电电压进行调节。其中，该电池电压的安全阈值约束是指在一次充电周期结束后电池对应的实际电池电压不超过预设满充电压。因此，该校准条件为需要判断当前对电池模块的充电电压与预设满充电压之间的差距是否小于安全阈值，若小于则不需要调节，若大于才需要调节。
还需要说明的，若本次充电周期中，充电装置对预设的第一电压进行了调节，在本次充电周期结束后，则需要回退对预设的第一电压的调节，即可以理解为恢复默认档位配置，以防止在下次充电周期以本次第三电压进行充电时，由于其他因素的影响(如温度等)造成实际充电电压过大，形成安全隐患。
本申请实施例提供了一种充电装置，应用于电池充电技术领域，可以在恒压充电阶段，调节恒压充电阶段的充电电压，以保证电子设备的续航和用电安全。其中，该充电装置包括：充电控制单元和处理单元。上述充电控制单元可以在恒压充电阶段时，向电池模块输出预设的第一电压(该预设的第一电压为充电控制单元基于预设满充电压向电池模块输出的电压)。在恒压充电阶段时，上述处理单元可以获取恒压充电阶段内电池模块对应的第二电压的电压值(相当于在充电控制单元向电池模块输出当前预设的第一电压时，电池模块接收到的实际充电电压值，即，实际充电电压的电压值)；基于该第二电压的电压值，获得上述预设的第一电压对应的调节信息；上述充电控制单元还可以根据上述调节信息对恒压充电阶段中预设的第一电压进行调节，并向上述电池模块输出第三电压，使得在充电控制单元向电池模块输出第三电压时，电池模块接收到的实际充电电压不超过该预设满充电压的情况下，更接近电池满充电压的理想值，提高了电池的充电精度。而且，本申请实施例中的，通过获取充电过程中的充电电压，可以根据实际充电过程中各个因素的影响对当前电池模块的充电电压进行调节(即恒压充电阶段电池模块的充电电压会发生变化)，不仅可以避免诸如板级应力、温度、器件老化等因素对电池模块在实际充电过程的影响，而且还可以在充电周期中对充电电压及时调整，使得处于当前充电周期中的电池可以达到理想的充电状态，避免了在充电完成后才发现电池未被充满，甚至充电电压过高的情况。因此，本申请实施例可以在恒压充电阶段，调节电池模块的实际充电电压，以保证电子设备的续航。
基于图2提供的电子设备，以及图3或图8提供的充电装置的结构，结合本申请中提供的充电方法，对本申请中提出的技术问题进行具体分析和解决。
参见图10，图10是本申请实施例提供的一种充电方法的流程示意图，该方法可应用于上述图2中所述的电子设备，所述电子设备包括电池模块和充电装置，所述电池模块在充电过程中对应有恒压充电阶段，其中充电装置可以包括：处理单元和充电控制单元，还可以包括检测单元。充电装置可以用于支持并执行图10中所示的方法流程步骤S201-步骤S204。在 所述恒压充电阶段时，该方法可以包括以下步骤S202-步骤S204，还可以包括步骤S201。其中，所述恒压充电阶段为以恒定电压所述电池进行充电的阶段，在所述恒压充电阶段时，该方法包括：
步骤S201：通过充电控制单元向电池模块输出预设的第一电压。
具体的，在恒压充电阶段，充电装置可以通过充电控制单元向所述电池模块输出预设的第一电压，即，以预设的第一电压向电池模块充电。
步骤S202：通过处理单元获取电池模块的第二电压的电压值。
具体的，通过处理单元获取电池模块的第二电压的电压值，所述第二电压为所述电池模块在所述预设的第一电压下获得的实际充电电压。另外，该预设的第一电压为理论上电池模块可以获得的充电电压。
可选的，通过检测单元检测所述第二电压的电压值，并发送至所述处理单元。充电装置还包括检测单元，在恒压充电阶段，可以通过检测单元(如：高精度检测装置)用于检测第二电压的电压值。其中，该检测单元可以位于充电控制单元内部，处理单元内部或独立于充电控制单元和处理单元之外与电池模块耦合。
可选的，通过所述电量计检测所述第二电压的电压值，并发送至所述处理单元。检测单元可以为电子设备中的电量计，该电量计用于测量电池模块的相关参数(如：电池充电电流、电池实际充电电压等)，因此，该电量计可以检测上述第二电压的电压值，并发送至上述处理单元。通过利用电子设备中的现有器件检测第二电压的电压值，节省了电子设备硬件空间和成本。
可选的，在所述电子设备对应的温度处于预设温度范围内时，通过所述电量计检测所述第二电压的电压值，并发送至所述处理单元。电子设备的温度的变化会影响到电量计获取的第二电压的精度，因此，在本申请实施例中，在获取第二电压的电压值前，还需要确定当前电子设备对应的温度，在电子设备对应的温度处于预设温度范围内时，该电量计获取的充电电压的电压值是可信的。也因此，在后续调节过程中，调节后的充电电压精度更准确。
可选的，通过所述检测单元检测第一电流的电流值，并发送至所述处理单元，其中，所述第一电流为所述电池模块在所述预设的第一电压下对应的充电电流；所述基于所述第二电压的电压值，获得所述预设的第一电压对应的调节信息，包括：基于所述第二电压的电压值和第一电流的电流值，确定所述调节信息。检测单元不仅用于检测当前预设的第一电压下电池模块对应的充电电压的电压值(第二电压的电压值)还用于检测当前的充电电流的电流值。处理单元还可以基于获取到的第二电压的电压值和充电电流的电流值，确定上述调节信息。另外该检测单元还可以是电量计。
可选的，所述通过所述检测单元检测第一电流的电流值，并发送至所述处理单元，包括：通过所述检测单元检测多个时间点中每个时间点对应的所述第二电压的电压值和所述第一电流的电流值，并发送至所述处理单元；所述基于所述第二电压的电压值和第一电流的电流值，确定所述调节信息，包括：基于所述多个时间点中每个时间点对应的所述第二电压的电压值和所述第一电流的电流值，确定所述调节信息。为了提高校准后的充电电压的精度，在本申请实施例中，获取多组恒压充电阶段的充电电压值(即，第二电压的电压值)和第一电流值，避免只获取了一组充电电压值和第一电流值时，造成数据不准确，进而导致确定的调节信息不准确。另外，还可以周期性的获取多组数据，即上述多个时间点中任意相邻时间点的时间间隔相等。
步骤S203：基于第二电压的电压值，获得预设的第一电压对应的调节信息。
具体的，基于所述第二电压的电压值，获得所述预设的第一电压对应的调节信息。该调节信息可以在恒压充电阶段，调节恒压充电阶段的充电电压，以保证电子设备的续航和用电安全。
可选的，上述基于所述第二电压的电压值，获得所述预设的第一电压对应的调节信息，包括：基于上述第二电压的电压值和上述预设电压值，获得上述预设的第一电压对应的调节信息。
可选的，所述基于上述第二电压的电压值和上述预设电压值，获得上述预设的第一电压对应的调节信息，包括：对比多个时间点中每个时间点对应的所述第二电压的电压值和上述预设电压值之间大小，获得所述多个时间点中每个时间点分别对应的电压差值；基于所述多个时间点中每个时间点分别对应的电压差值，确定所述调节信息。
可选的，所述调节信息包括第一调节量，所述第一调节量为所述第二电压的电压值与预设电压值之间的差值。调节信息是针对预设的第一电压的调节信息，该预设电压值为预设满充电压的电压值，该预设满充电压为电池模块预设的电池满充电压，若确定电池模块在该预设第一电压下接收到的实际充电电压达不到预设满充电压，则可以根据该预设满充电压调节预设的第一电压，从而使得电池模块接收到的实际充电电压(第二电压)也随之提升至预设满充电压。例如：对预设的第一电压增加10mV则电池模块接收到实际充电电压(第二电压)也随之增加10mV。
可选的，所述调节信息包括第二调节量，所述第二调节量为上述预设的第一电压随上述第一电流变化的变化量，且与第一电流正相关。充电控制单元可以包括充电芯片，通过该充电芯片输出的第四电压向电池模块充电，其中，该充电芯片与电池模块之间可以通过如导线等连接，由于导线存在阻抗，因此该充电芯片输出的第四电压会被上述阻抗分压。也即，该预设的第一电压可以理解为第四电压经过上述阻抗后输入上述电池模块的电压。因此，充电装置可以基于上述阻抗分压的电压对充电芯片输出的第四电压进行补偿，进而实现对预设的第一电压的调节。另外由于恒压充电阶段需要保持电池模块的充电电压稳定，所以随着充电时间增加，电池模块电量逐渐升高，第一电流会逐渐减小，也因此上述阻抗分压的电压也会逐渐减小。故针对预设的第一电压的调节信息中的第二调节量为预设的第一电压随上述第一电流变化的变化量，且与第一电流正相关。
步骤S204：通过充电控制单元基于调节信息，对预设的第一电压进行调节，向电池模块输出第三电压。
具体的，上述充电控制单元可以基于调节信息，对预设的第一电压进行调节，获得第三电压，还可以向上述电池模块输出第三电压，使得在充电控制单元向电池模块输出第三电压时，电池模块接收到的实际充电电压更接近预设满充电压，提高了电子设备的续航。该第三电压即为调节后的第一电压。
可选的，所述第三电压的电压值大于所述预设的第一电压的电压值。即对应的，在充电控制单元向电池模块输出第三电压时，电池模块接收到的实际充电电压值要大于向电池模块输出当前预设的第一电压时，电池模块接收到的实际充电电压值。也因此，以第三电压向电池模块充电结束后，满充的电池模块的容量要高于以预设的第一电压向电池模块充电结束后，满充的电池模块的容量，大大的加强了电子设备的续航。
本申请实施例提供了一种充电装置，应用于电池充电技术领域，可以在恒压充电阶段，调节恒压充电阶段的充电电压，以保证电子设备的续航和用电安全。其中，上述充电装置可以在恒压充电阶段时，可以向电池模块输出预设的第一电压(该预设的第一电压为充电装置 基于预设满充电压向电池模块输出的电压，该预设满充电压可以理解为预设的电池满充电压)。该充电装置包括：充电控制单元和处理单元。上述处理单元相当于电子设备中的处理单元、处理芯片或片上系统(System-on-a-chip，SOC)等，在恒压充电阶段时，可以获取恒压充电阶段内电池模块对应的第二电压的电压值(第二电压的电压值相当于在充电控制单元向电池模块输出当前预设的第一电压时，电池模块接收到的实际充电电压值)；基于该第二电压的电压值，获得上述预设的第一电压对应的调节信息；上述充电控制单元还可以根据上述调节信息对恒压充电阶段中预设的第一电压进行调节，并向上述电池模块输出第三电压(该第三电压为调节后的第一电压)，使得在充电控制单元向电池模块输出第三电压时，电池模块接收到的实际充电电压值更接近预设满充电压的电压值(即，预设电压值)，提高了电池的充电精度。而且，不会超过该预设满充电压。另外，本申请实施例中，通过获取充电过程中针对电池模块的充电电压，可以根据实际充电过程中各个因素的影响对当前电池模块的充电电压进行调节(即，本申请实施例中恒压充电阶段电池模块的充电电压会发生变化)，不仅可以避免诸如板级应力、温度、器件老化等因素对电池模块在实际充电过程的影响，而且还可以在充电周期中对充电电压及时调整，使得处于当前充电周期中的电池可以达到理想的充电状态，避免了在充电完成后才发现电池未被充满，甚至充电电压过高的情况。因此，本申请实施例可以在恒压充电阶段，调节电池模块的实际充电电压，以保证电子设备的续航。
需要说明的是，上述图10中针对步骤S201-步骤S204的相关内容还可以对应参考上述图3-图9实施例中的相关描述，对此本申请实施例不再赘述。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
需要说明的是，对于前述的各方法实施例，为了简单描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本申请并不受所描述的动作顺序的限制，因为依据本申请，某些步骤可能可以采用其他顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定是本申请所必须的。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置，可通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如上述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性或其它的形式。
上述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
上述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该 计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以为个人计算机、服务端或者网络设备等，具体可以是计算机设备中的处理器)执行本申请各个实施例上述方法的全部或部分步骤。其中，而前述的存储介质可包括：U盘、移动硬盘、磁碟、光盘、只读存储器(Read-Only Memory，缩写：ROM)或者随机存取存储器(Random Access Memory，缩写：RAM)等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (19)

  1. 一种充电装置，其特征在于，应用于电子设备，所述电子设备包括电池模块，所述电池模块在充电过程中对应有恒压充电阶段；所述装置包括：充电控制单元和处理单元；
    所述充电控制单元，用于在所述恒压充电阶段，向所述电池模块输出预设的第一电压；
    所述处理单元，用于在所述恒压充电阶段，获取所述电池模块的第二电压的电压值，并基于所述第二电压的电压值，获得所述预设的第一电压对应的调节信息；其中，所述第二电压为所述电池模块在所述预设的第一电压下获得的实际充电电压；
    所述充电控制单元，用于基于所述调节信息，对所述预设的第一电压进行调节，向所述电池模块输出第三电压，所述第三电压为调节后的第一电压。
  2. 如权利要求1所述装置，其特征在于，所述第三电压的电压值大于所述预设的第一电压的电压值。
  3. 如权利要求1或2所述装置，其特征在于，所述充电装置还包括检测单元；
    所述检测单元，用于检测所述第二电压的电压值，并发送至所述处理单元。
  4. 如权利要求3所述装置，其特征在于，所述检测单元为电量计；
    所述电量计，用于检测所述第二电压的电压值，并发送至所述处理单元。
  5. 如权利要求4所述装置，其特征在于，所述电量计，用于在所述电子设备对应的温度处于预设温度范围内时，检测所述第二电压的电压值，并发送至所述处理单元。
  6. 如权利要求3-5任意一项所述装置，其特征在于，所述调节信息包括第一调节量，所述第一调节量为所述第二电压的电压值与预设电压值之间的差值。
  7. 如权利要求3-6任意一项所述装置，其特征在于，所述检测单元，还用于检测第一电流的电流值，并发送至所述处理单元，其中，所述第一电流为所述电池模块在所述预设的第一电压下相应的充电电流；
    所述处理单元，具体用于基于所述第二电压的电压值和所述第一电流的电流值，确定所述调节信息。
  8. 如权利要求7所述装置，其特征在于，所述调节信息包括第二调节量，所述第二调节量为所述预设的第一电压随所述第一电流变化的变化量，且与所述第一电流正相关。
  9. 一种充电方法，其特征在于，应用于电子设备，所述电子设备包括电池模块，所述电池模块在充电过程中对应有恒压充电阶段；在所述恒压充电阶段，所述方法包括：
    通过充电控制单元向所述电池模块输出预设的第一电压；
    通过处理单元获取所述电池模块的第二电压的电压值，并基于所述第二电压的电压值，获得所述预设的第一电压对应的调节信息；其中，所述第二电压为所述电池模块在所述预设的第一电压下获得的实际充电电压；
    通过所述充电控制单元基于所述调节信息，对所述预设的第一电压进行调节，向所述电池模块输出第三电压，所述第三电压为调节后的第一电压。
  10. 如权利要求9所述方法，其特征在于，所述第三电压的电压值大于所述预设的第一电压的电压值。
  11. 如权利要求9或10所述方法，其特征在于，所述方法还包括：
    通过检测单元检测所述第二电压的电压值，并发送至所述处理单元。
  12. 如权利要求11所述方法，其特征在于，所述检测单元为电量计；
    所述通过检测单元检测所述第二电压的电压值，并发送至所述处理单元，包括：
    通过所述电量计检测所述第二电压的电压值，并发送至所述处理单元。
  13. 如权利要求12所述方法，其特征在于，所述通过所述电量计检测所述第二电压的电压值，并发送至所述处理单元，包括：
    在所述电子设备对应的温度处于预设温度范围内时，通过所述电量计检测所述第二电压的电压值，并发送至所述处理单元。
  14. 如权利要求11-13任意一项所述方法，其特征在于，所述调节信息包括第一调节量，所述第一调节量为所述第二电压的电压值与预设电压值之间的差值。
  15. 如权利要求11-14任意一项所述方法，其特征在于，所述方法还包括：
    通过所述检测单元检测第一电流的电流值，并发送至所述处理单元，其中，所述第一电流为所述电池模块在所述预设的第一电压下相应的充电电流；
    所述基于所述第二电压的电压值，获得所述预设的第一电压对应的调节信息，包括：
    基于所述第二电压的电压值和所述第一电流的电流值，确定所述调节信息。
  16. 如权利要求15所述方法，其特征在于，所述调节信息包括第二调节量，所述第二调节量为所述预设的第一电压随所述第一电流变化的变化量，且与所述第一电流正相关。
  17. 一种电子设备，其特征在于，所述电子设备包括电池模块和如上述权利要求1-8中任意一项所述的充电装置；所述充电装置与所述电池模块电连接。
  18. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机程序，当所述计算机程序被计算机或处理器执行时，使得所述计算机或所述处理器执行如权利要求9-16中任意一项所述的方法。
  19. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，所述计算机程序被计算机或处理器执行时实现上述权利要求9-16任意一项所述的方法。
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