CN112787374B - Charging system, electronic device and charging control method thereof - Google Patents

Charging system, electronic device and charging control method thereof Download PDF

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Publication number
CN112787374B
CN112787374B CN202011625500.6A CN202011625500A CN112787374B CN 112787374 B CN112787374 B CN 112787374B CN 202011625500 A CN202011625500 A CN 202011625500A CN 112787374 B CN112787374 B CN 112787374B
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China
Prior art keywords
charging
battery module
switch tube
voltage
capacitor
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CN202011625500.6A
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CN112787374A (en
Inventor
廖兴保
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Priority to CN202011625500.6A priority Critical patent/CN112787374B/en
Publication of CN112787374A publication Critical patent/CN112787374A/en
Priority to PCT/CN2021/142319 priority patent/WO2022143726A1/en
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    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00308—Overvoltage protection
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00309—Overheat or overtemperature protection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

The application discloses a charging system, electronic equipment and a charging control method thereof, and belongs to the technical field of charging. The charging system includes: the battery module comprises a charging interface, a plurality of half-voltage charging circuits and a battery module; the input end of the charging interface is connected with a power supply, and the output ends of the charging interface are respectively connected with the input ends of a plurality of half-voltage charging circuits; the output ends of the half-voltage charging circuits are connected with the battery module, and the power supply charges the battery module through at least one half-voltage charging circuit in the half-voltage charging circuits. The half-voltage charging circuit is used for charging the battery module, so that the voltage can be halved under the condition that the charging power is unchanged, the interface voltage is reduced, potential safety hazards such as interface heating abnormality and the like caused by high interface voltage can be solved, and meanwhile, the charging efficiency can be improved by connecting a plurality of half-voltage charging circuits in parallel.

Description

Charging system, electronic device and charging control method thereof
Technical Field
The application belongs to the technical field of charging, and particularly relates to a charging system, electronic equipment and a charging control method thereof.
Background
Along with the development of communication technology, the intelligent terminal is higher and higher in configuration, more and more in functions, faster and faster in power consumption, and the requirement of users on charging speed is gradually increased.
At present, the intelligent terminal charges in a quick-charging or super-quick-charging mode, and the quick-charging is already standard of the intelligent terminal, so that the experience of a terminal user is directly affected. However, because the charging interface of the terminal may have the conditions of liquid feeding and dust feeding, when the fast charging charger is utilized, the charger outputs high voltage to the charging interface of the terminal only, and the high voltage easily causes corrosion and oxidation of metal pins of the charging interface, the contact impedance is increased due to pin oxidation or dust feeding, and the temperature of the charging interface is abnormally increased in the charging process, and even the phenomenon of shell melting or burning at the interface is caused.
Disclosure of Invention
The embodiment of the application provides a charging system, electronic equipment and a charging control method thereof, which can solve the problem of potential charging safety hazards caused by abnormal heating of a charging interface caused by high-voltage charging in the prior art.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, there is provided a charging system comprising: the battery module comprises a charging interface, a plurality of half-voltage charging circuits and a battery module;
the input end of the charging interface is connected with a power supply, and the output ends of the charging interface are respectively connected with the input ends of a plurality of half-voltage charging circuits; the output ends of the half-voltage charging circuits are connected with the battery module;
the power supply charges the battery module through at least one half-voltage charging circuit of the plurality of half-voltage charging circuits.
In a second aspect, there is provided an electronic device comprising: the charging system of the first aspect.
In a third aspect, a method for controlling charging of an electronic device is provided, including:
detecting the working states of a plurality of half-voltage charging circuits connected in parallel;
and under the condition that at least one half-voltage charging circuit in the plurality of half-voltage charging circuits is in a working state, the power supply charges the battery module through the at least one half-voltage charging circuit.
In a fourth aspect, there is provided an electronic device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the third aspect.
In a fifth aspect, a readable storage medium is provided, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the method according to the third aspect.
In a sixth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and where the processor is configured to execute a program or instructions to implement a method according to the third aspect.
The embodiment of the application discloses charging system, this charging system includes charging interface, a plurality of half-voltage charging circuit and battery module, and charging interface's input is connected with the power, and the output is connected with a plurality of half-voltage charging circuit's input respectively, and a plurality of half-voltage charging circuit's output all is connected with battery module, and the power charges for battery module through at least one half-voltage charging circuit in a plurality of half-voltage charging circuit. The half-voltage charging circuit is used for charging the battery module, so that the voltage can be halved under the condition that the charging power is unchanged, the interface voltage is reduced, potential safety hazards such as interface heating abnormality and the like caused by interface high voltage can be solved, and meanwhile, the charging efficiency can be improved by connecting a plurality of half-voltage charging circuits in parallel.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a block diagram of a charging system provided in one embodiment of the present application;
FIG. 2 is a schematic circuit diagram of a half-voltage charging circuit according to one embodiment of the present application;
fig. 3 is a flowchart of a method for controlling charging of an electronic device according to an embodiment of the present application;
fig. 4 is a schematic hardware structure of an electronic device according to an embodiment of the present application.
Wherein, 10-charging interface; 20-a plurality of half-voltage charging circuits; 30-a step-up/step-down charging circuit; 40-battery module.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The charging system, the electronic device and the charging control method thereof provided by the embodiment of the application are described in detail below by means of specific embodiments and application scenes thereof with reference to the accompanying drawings.
Fig. 1 is a block diagram of a charging system according to an embodiment of the present application. As shown in fig. 1, the charging system may include: a charging interface 10, a plurality of half-voltage charging circuits 20, and a battery module 40.
Specifically, the input end of the charging interface 10 is connected with a power supply, and the output ends of the charging interface 10 are respectively connected with the input ends of the plurality of half-voltage charging circuits 20; the output terminals of the plurality of half-voltage charging circuits 20 are connected to the battery module 40.
Wherein the power source charges the battery module 40 through at least one half-voltage charging circuit of the plurality of half-voltage charging circuits 20.
That is, the battery module 40 can be charged by connecting the plurality of half-voltage charging circuits 20 in parallel, and the plurality of half-voltage charging circuits can disperse the heat source, reduce the overall temperature of the electronic device, and improve the charging efficiency.
Wherein, the plurality refers to two or more.
In this application embodiment, charging system includes charging interface, a plurality of half-voltage charging circuit and battery module, and charging interface's input is connected with the power, and the output is connected with a plurality of half-voltage charging circuit's input respectively, and a plurality of half-voltage charging circuit's output all is connected with battery module, and the power charges for battery module through at least one half-voltage charging circuit in a plurality of half-voltage charging circuit. The battery module 40 is charged by the half-voltage charging circuit, so that the voltage can be halved under the condition of unchanged charging power, the interface voltage can be reduced, potential safety hazards such as interface heating abnormality caused by interface high voltage can be solved, and meanwhile, the charging efficiency can be improved by connecting a plurality of half-voltage charging circuits 20 in parallel.
In one possible embodiment of the present application, the charging system may further include a direct charging circuit, an input terminal of the direct charging circuit being connected to an output terminal of the charging interface, and an output terminal of the direct charging circuit being connected to the battery module.
Specifically, in the case where the charging current of the battery module 40 is less than the current threshold, the power supply charges the battery module 40 through the half-voltage charging circuit; in the case where the charging current of the battery module 40 is greater than or equal to the current threshold, the power supply charges the battery module 40 through the direct charging circuit.
That is, two charging modes, i.e., a half-voltage charging mode and a direct charging mode, are adopted, and the charging system can change the mode of charging the battery module 40 according to the magnitude of the charging current of the battery module 40, so that the quick charging can be realized, and the abnormal temperature rise of the charging interface 10 can be avoided.
In one possible embodiment of the present application, the charging system may further include: and the micro control unit (Microcontroller Unit, MCU) is respectively connected with each half-voltage charging circuit and each direct charging circuit and is used for outputting control signals to each half-voltage charging circuit and each direct charging circuit so as to control the on or off of the half-voltage charging circuit and the direct charging circuit.
According to the embodiment of the application, the MCU outputs the control signals to each half-voltage charging circuit and each direct charging circuit, and the working states of the half-voltage charging circuits and the direct charging circuits are controlled. When the quick charge is required, the plurality of half-voltage charging circuits 20 can be controlled to work simultaneously to charge the battery module 40, and when the charging time is longer or the temperature of the electronic device or the battery is higher, a few half-voltage charging circuits, such as a half-voltage charging circuit, can be controlled to work to charge the battery module 40 with smaller power, so that the excessive voltage or the excessive temperature of the charging interface 10 is avoided, and when the charging current is larger, the battery module 40 is charged through the direct charging circuit.
In one possible embodiment of the present application, the half-voltage charging circuit includes a first charging path and a second charging path, the second charging path including a second capacitance C2.
Specifically, in a first period of time, the power supply charges a second capacitor C2 in the half-voltage charging circuit through the first charging circuit; during the second period, the second capacitor C2 charges the battery module 40 through the second charging path.
That is, the half-voltage charging circuit has two operation modes, that is, when the half-voltage charging circuit is in operation, the charging stage and the discharging stage of the second capacitor C2 can be alternately performed, so as to achieve the effects of halving the voltage and multiplying the current, so as to reduce the voltage of the charging interface 10.
Fig. 2 is a schematic circuit diagram of a half-voltage charging circuit according to an embodiment of the present application. The protection switch tube Qb is an NMOS tube, which can prevent the battery module 40 from reverse leakage, the protection circuit is safe, the input terminal voltage is Vin, the input terminal current is Iin, the output terminal voltage is Vbat, the output terminal current is Ibat, and the first capacitor C1 is a filter capacitor. In the whole circuit operation, the second capacitor C2 is controlled to charge and discharge by controlling the state of the switching tube, and the on period and the off period of the switching tube are both 50% of the duty ratio in the switching period, so that the functions of voltage halving and current doubling are realized, namely vbat=vbus/2 and ibat=2×iin.
In one specific embodiment of the present application, the first charging path may include a protection switching tube Qb, a first switching tube Q1, a first capacitor C1, a third switching tube Q3, and a third capacitor C3.
The input end of the protection switch tube Qb is connected with a power supply, the output end of the protection switch tube Qb is respectively connected with the first end of the first capacitor C1 and the first end of the first switch tube Q1, the second end of the first switch tube Q1 is connected with the first end of the second capacitor C2, the second end of the second capacitor C2 is connected with the first end of the third switch tube Q3, the second end of the third switch tube Q3 is respectively connected with the first end of the third capacitor C3 and the first end of the battery module 40, the second end of the first capacitor C1, the second end of the third capacitor C3 and the second end of the battery module 40 are all grounded, and the control end of the protection switch tube, the control end of the first switch tube Q1 and the control end of the third switch tube Q3 are all connected with a micro control unit, and the micro control unit controls the connection and disconnection of the protection switch tube Qb, the first switch tube Q1 and the third switch tube Q3.
That is, the micro control unit controls the first switching tube Q1 and the third switching tube Q3 to be turned on to charge the second capacitor C2.
Specifically, in the conducting period of the first charging path, the protection switching tube Qb, the first switching tube Q1 and the third switching tube Q3 are turned on, and the second switching tube Q2 and the fourth switching tube Q4 are turned off, which is equivalent to Vin charging the second capacitor C2.
In the embodiment of the application, the micro control unit controls the protection switching tube Qb, the first switching tube Q1 and the third switching tube Q3 to be turned on, and simultaneously controls the second switching tube Q2 and the fourth switching tube Q4 to be turned off, namely, a first charging path is formed, and the second capacitor C2 is charged, namely, the charging stage of the half-voltage charging circuit.
In one specific embodiment of the present application, the second charging path may include: a second switching tube Q2, and a fourth switching tube Q4.
The first end of the second switch tube Q2 is connected with the first end of the second capacitor C2, the second end of the second capacitor C2 is connected with the first end of the fourth switch tube Q4, the second end of the fourth switch tube Q4 is grounded, the second end of the second switch tube Q2 is respectively connected with the first end of the third capacitor C3 and the first end of the battery module 40, the second end of the third capacitor C3 and the second end of the battery module 40 are grounded, the control end of the second switch tube Q2 and the control end of the fourth switch tube Q4 are connected with the micro control unit, and the micro control unit controls the on and off of the second switch tube and the third switch tube.
That is, the second switching tube Q2 and the fourth switching tube Q4 are controlled to be turned on by the micro control unit, and the battery module 40 is charged by the second capacitor C2.
Specifically, in the off period of the second charging path, the second switching tube Q2 and the fourth switching tube Q4 are turned on, the first switching tube Q1 and the third switching tube Q3 are turned off, and the second capacitor C2 and the third capacitor C3 are connected in parallel to charge the battery module 40.
In this embodiment of the present application, the second switching tube Q2 and the fourth switching tube Q4 are turned on, and meanwhile, the micro control unit is controlled to control the protection switching tube Qb, the first switching tube Q1 and the third switching tube Q3 to be turned off, so as to form a second charging path, and the second capacitor C2 is discharged, which is the discharging stage of the half-voltage charging circuit.
In some embodiments, the battery module 40 is charged by a power supply of 100W at 20V/5A, and the half-voltage charging circuit of the embodiment of the application can convert into a low-voltage high-current of 10V/10A, so that the safe and fast charging with high conversion rate and low heating is realized.
In one possible embodiment of the present application, the direct charging circuit may include: the protection switching tube Qb, the first switching tube Q1, the first capacitor C1, the second switching tube Q2 and the third capacitor C3.
The input end of the protection switch tube Qb is connected with a power supply, the output end of the protection switch tube Qb is connected with the first end of the first capacitor C1 and the first end of the first switch tube Q1 respectively, the second end of the first switch tube Q1 is connected with the first end of the second switch tube Q2, the second end of the second switch tube Q2 is connected with the first end of the third capacitor C3 and the first end of the battery module 40 respectively, the second end of the first capacitor C1, the second end of the third capacitor C3 and the second end of the battery module 40 are grounded, the control end of the protection switch tube, the control end of the first switch tube Q1 and the control end of the second switch tube Q2 are connected with a micro control unit, and the micro control unit controls the connection and disconnection of the protection switch tube, the first switch tube and the second switch tube.
That is, the first and second switching transistors Q1 and Q2 are controlled to be turned on by the micro control unit, and the battery module 40 is directly charged with power.
Specifically, in the direct charging process, the protection switching tube Qb, the first switching tube Q1, and the second switching tube Q2 are turned on, and the third switching tube Q3 and the fourth switching tube Q4 are turned off. The power supply charges battery module 40 when vbus=vbat, iin=ibat.
In one possible embodiment of the present application, the charging system may further include: the buck-boost charging circuit 30 has an input terminal connected to the charging interface 10 and an output terminal connected to the battery module 40, and is configured to regulate a charging voltage of the battery module 40.
In the embodiment of the present application, by adding the buck-boost charging circuit 30 between the charging interface 10 and the battery module 40, the safety and suitability of charging can be improved.
The embodiment of the application also provides electronic equipment, which comprises the charging system. Specifically, the foregoing system embodiments have been described in detail, which is not described in detail in this embodiment.
The embodiment of the application also provides a charging control method of the electronic equipment. As shown in fig. 3, the charging control method of the electronic device may include: the contents shown in steps S301 to S302.
In step S301, the operating states of a plurality of half-voltage charging circuits connected in parallel are detected.
In step S302, when at least one half-voltage charging circuit of the plurality of half-voltage charging circuits is in an operating state, the power supply charges the battery module through the at least one half-voltage charging circuit.
In the embodiment of the application, the working states of the half-voltage charging circuits are detected first, and then the power supply charges the battery module through at least one half-voltage charging circuit under the condition that at least one half-voltage charging circuit in the plurality of half-voltage charging circuits is in the working state. The half-voltage charging circuit is used for charging the battery module, so that the voltage can be halved under the condition that the charging power is unchanged, the interface voltage is reduced, potential safety hazards such as interface heating abnormality and the like caused by high interface voltage can be solved, and meanwhile, the charging efficiency can be improved by connecting a plurality of half-voltage charging circuits in parallel.
In one possible embodiment of the present application, the power supply charges the battery module through at least one half-voltage charging circuit, and may include the following steps.
Under the condition that a power supply charges a battery module through a half-voltage charging circuit, detecting the battery voltage and the battery temperature of the battery module;
detecting a charging current of the battery module when the battery voltage is greater than a voltage threshold or the battery temperature is greater than a temperature threshold;
under the condition that the charging current of the battery module is smaller than a current threshold value, the power supply charges the battery module through the half-voltage charging circuit; and under the condition that the charging current of the battery module is greater than or equal to the current threshold value, switching the half-voltage charging circuit to the direct charging circuit, and charging the battery module by the power supply through the direct charging circuit.
That is, two charging modes, i.e., a half-voltage charging mode and a direct charging mode, are adopted, and the charging system can select different modes to charge the battery module according to the state of the battery.
Specifically, taking a high-Voltage battery cell as an example, the single-cell battery enters a Constant Current (CC) Voltage Vbat of 3.0V, and the Constant Voltage (CV) Voltage Vbat of 4.45V. When the half-voltage charging circuit is used for charging the series double-cell batteries, the voltage of the charging interface of the corresponding cell from the CC to the CV region is respectively 12V and 18V because Vbus is approximately equal to 2 x Vbat; when the direct charging circuit is used for charging the double-cell battery, the voltage of the charging interface of the corresponding cell from the CC to CV region is respectively 6V and 9V because Vbus is approximately 2 x Vbat. The access points (Wireless Access Point, AP) may be accessed wirelessly by an MCU or electronic device controller to control and regulate the charging voltage or current to charge the battery module. When the electronic equipment is charged by the half-voltage charging circuit, parameters such as the voltage of the battery module, the temperature of the electronic equipment and the like are monitored in real time, the battery voltage rises and the temperature of the electronic equipment rises in the charging process, when the battery voltage is detected to be larger than a voltage threshold value or exceeds a temperature threshold value, the charging current is reduced, and when the charging current is smaller than a current threshold value, the half-voltage charging circuit is switched to the direct charging circuit, namely, the interface voltage is reduced, and the working reliability of an interface in the charging process is improved.
Optionally, the embodiment of the present application further provides an electronic device, including a processor 110, a memory 109, and a program or an instruction stored in the memory 109 and capable of running on the processor 110, where the program or the instruction implements each process of the foregoing embodiment of the method for controlling charging of an electronic device when executed by the processor 110, and the process can achieve the same technical effect, so that repetition is avoided, and no further description is given here.
It should be noted that, the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.
Figure 4 is a schematic diagram of a hardware architecture of an electronic device implementing various embodiments of the present application,
the electronic device 100 includes, but is not limited to: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, and processor 110.
Those skilled in the art will appreciate that the electronic device 100 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 110 via a power management system to perform functions such as managing charging, discharging, and power consumption via the power management system. The electronic device structure shown in fig. 4 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.
The processor 110 is configured to detect an operating state of a plurality of half-voltage charging circuits connected in parallel; and under the condition that at least one half-voltage charging circuit in the plurality of half-voltage charging circuits is in an operating state, the power supply charges the battery module through the at least one half-voltage charging circuit.
In the embodiment of the application, the working states of the half-voltage charging circuits are detected first, and then the power supply charges the battery module through at least one half-voltage charging circuit under the condition that at least one half-voltage charging circuit in the plurality of half-voltage charging circuits is in the working state. The half-voltage charging circuit is used for charging the battery module, so that the voltage can be halved under the condition that the charging power is unchanged, the interface voltage is reduced, potential safety hazards such as interface heating abnormality and the like caused by high interface voltage can be solved, and meanwhile, the charging efficiency can be improved by connecting a plurality of half-voltage charging circuits in parallel.
The processor 110 is further configured to detect a battery voltage and a battery temperature of the battery module when the power supply charges the battery module through the half-voltage charging circuit; detecting a charging current of the battery module when the battery voltage is greater than a voltage threshold or the battery temperature is greater than a temperature threshold;
under the condition that the charging current of the battery module is smaller than a current threshold value, the power supply charges the battery module through the half-voltage charging circuit; and under the condition that the charging current of the battery module is greater than or equal to the current threshold value, switching the half-voltage charging circuit to the direct charging circuit, and charging the battery module by the power supply through the direct charging circuit.
It should be appreciated that in embodiments of the present application, the input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042, the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 107 includes a touch panel 1071 and other input devices 1072. The touch panel 1071 is also referred to as a touch screen. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein. Memory 109 may be used to store software programs as well as various data including, but not limited to, application programs and an operating system. The processor 110 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.
The embodiment of the application further provides a readable storage medium, on which a program or an instruction is stored, where the program or the instruction realizes each process of the embodiment of the charging control method of the electronic device when executed by the processor, and the same technical effect can be achieved, so that repetition is avoided, and no detailed description is given here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.
The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used for running a program or an instruction, so as to implement each process of the embodiment of the charging control method of the electronic device, and achieve the same technical effect, so that repetition is avoided, and no redundant description is provided herein.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (10)

1. A charging system, comprising: the battery module comprises a charging interface, a plurality of half-voltage charging circuits, a battery module and a micro control unit;
the input end of the charging interface is connected with a power supply, and the output ends of the charging interface are respectively connected with the input ends of a plurality of half-voltage charging circuits; the output ends of the half-voltage charging circuits are connected with the battery module;
wherein the power supply charges the battery module through at least one half-voltage charging circuit of the plurality of half-voltage charging circuits;
the charging system further comprises a direct charging circuit, wherein the input end of the direct charging circuit is connected with the output end of the charging interface, and the output end of the direct charging circuit is connected with the battery module;
the half-voltage charging circuit comprises a first charging path and a second charging path; the second charging path comprises a second capacitor;
the first charging path includes: the input end of the protection switch tube is connected with a power supply, the output end of the protection switch tube is connected with the first end of the first capacitor and the first end of the first switch tube respectively, the second end of the first switch tube is connected with the first end of the second capacitor, the second end of the second capacitor is connected with the first end of the third switch tube, the second end of the third switch tube is connected with the first end of the third capacitor and the first end of the battery module respectively, the second end of the first capacitor, the second end of the third capacitor and the second end of the battery module are grounded, the control end of the protection switch tube, the control end of the first switch tube and the control end of the third switch tube are connected with the micro control unit, and the micro control unit controls the connection and disconnection of the protection switch tube, the first switch tube and the third switch tube;
the direct charging circuit includes: the protection switch tube comprises a protection switch tube, a first capacitor, a second switch tube and a third capacitor, wherein the input end of the protection switch tube is connected with a power supply, the output end of the protection switch tube is respectively connected with the first end of the first capacitor and the first end of the first switch tube, the second end of the first switch tube is connected with the first end of the second switch tube, the second end of the second switch tube is respectively connected with the first end of the third capacitor and the first end of the battery module, the second end of the first capacitor, the second end of the third capacitor and the second end of the battery module are all grounded, the control end of the protection switch tube, the control end of the first switch tube and the control end of the second switch tube are all connected with the micro control unit, and the micro control unit controls the connection and disconnection of the protection switch tube, the first switch tube and the second switch tube;
wherein, protection switch tube is NMOS tube.
2. The charging system of claim 1, wherein a power supply charges the battery module through the half-voltage charging circuit if a charging current of the battery module is less than a current threshold; and under the condition that the charging current of the battery module is greater than or equal to a current threshold value, the power supply charges the battery module through the direct charging circuit.
3. The charging system according to claim 2, wherein the micro control unit is connected to each of the half-voltage charging circuits and the direct charging circuits, respectively, and the micro control unit is configured to output a control signal to each of the half-voltage charging circuits and the direct charging circuits to control on or off of the half-voltage charging circuits and the direct charging circuits.
4. A charging system according to claim 3, wherein the power supply charges a second capacitor in the half-voltage charging circuit through the first charging path during a first period of time; the second capacitor charges the battery module through the second charging path during a second period of time.
5. The charging system of claim 1, wherein the second charging path further comprises: the first end of the second switch tube is connected with the first end of the second capacitor, the second end of the second capacitor is connected with the first end of the fourth switch tube, the second end of the fourth switch tube is grounded, the second end of the second switch tube is respectively connected with the first end of the third capacitor and the first end of the battery module, the second end of the third capacitor and the second end of the battery module are grounded, the control end of the second switch tube and the control end of the fourth switch tube are connected with the micro control unit, and the micro control unit controls the connection and disconnection of the second switch tube and the third switch tube.
6. The charging system of claim 1, wherein the charging system further comprises: and the input end of the buck-boost charging circuit is connected with the charging interface, and the output end of the buck-boost charging circuit is connected with the battery module and used for adjusting the charging voltage of the battery module.
7. An electronic device, comprising: a charging system according to any one of claims 1 to 6.
8. A charging control method of an electronic device, characterized in that the method is applied to the charging system of claim 1, comprising:
detecting the working states of a plurality of half-voltage charging circuits connected in parallel;
and under the condition that at least one half-voltage charging circuit in the plurality of half-voltage charging circuits is in a working state, the power supply charges the battery module through the at least one half-voltage charging circuit.
9. The method of claim 8, wherein the power source charges the battery module through the at least one half-voltage charging circuit, comprising:
detecting the battery voltage and the battery temperature of the battery module under the condition that the power supply charges the battery module through the half-voltage charging circuit;
detecting a charging current of the battery module in a case that the battery voltage is greater than a voltage threshold or the battery temperature is greater than a temperature threshold;
under the condition that the charging current of the battery module is smaller than a current threshold value, the power supply charges the battery module through the half-voltage charging circuit; and under the condition that the charging current of the battery module is greater than or equal to a current threshold value, switching the half-voltage charging circuit to a direct charging circuit, and charging the battery module by the power supply through the direct charging circuit.
10. An electronic device, comprising: a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the method as claimed in claim 8 or 9.
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