CN114069768B

CN114069768B - Charging circuit, charging control method and device and electronic equipment

Info

Publication number: CN114069768B
Application number: CN202111203864.XA
Authority: CN
Inventors: 桂红霞; 宁红扬
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-09-17
Filing date: 2021-10-15
Publication date: 2023-03-24
Anticipated expiration: 2041-10-15
Also published as: CN114069768A

Abstract

The embodiment of the application provides a charging circuit, a charging control method, a charging control device and electronic equipment, relates to the technical field of charging, and can ensure normal operation of the electronic equipment without backspacing of a charging mode so as to improve charging efficiency. A charging control method comprises the steps that charging information corresponding to a charging interface is obtained; when the charging information corresponding to the charging interface meets a preset condition, controlling the first switch device to be conducted, controlling the functional component voltage converter to convert the voltage provided by the charging interface, outputting the voltage to the battery after voltage reduction, and directly outputting the voltage provided by the charging interface to the functional component; when the charging information corresponding to the charging interface does not meet the preset condition, controlling a first switch device to be cut off; after the first switching device is controlled to be turned off, the functional component voltage converter is controlled to convert the voltage provided by the battery, boost the voltage and output the voltage to the functional component.

Description

Charging circuit, charging control method and device and electronic equipment

The present application claims priority of chinese patent application having application number 202111090912.9 and application name "control method of electronic device, apparatus, electronic device and storage medium" filed in chinese patent office on 9/17/2021, the entire contents of which are incorporated herein by reference.

Technical Field

The present disclosure relates to the field of charging technologies, and in particular, to a charging circuit, a charging control method, a charging control device, and an electronic apparatus.

Background

With the development of charging technology for electronic devices such as mobile phones, mobile phones can be charged based on standard voltage and current, and can also be charged based on larger voltage and current, and this charging mode may be referred to as a fast charging mode. However, when the existing electronic device is charged in some special scenarios, the electronic device may fall back from the fast charging mode to the standard charging mode, which reduces the charging efficiency.

Disclosure of Invention

A charging circuit, a charging control method, a charging control device and an electronic device can ensure the normal operation of the electronic device without the need of the rollback of a charging mode so as to improve the charging efficiency.

In a first aspect, a charging circuit is provided, including: a charging interface; the first end of the first voltage converter is electrically connected with the charging interface; a battery electrically connected to the second end of the first voltage converter; the first end of the first switch device is electrically connected with the charging interface; a functional component; the functional component voltage converter is electrically connected to the second end of the first switching device, the functional component and the battery, and is used for performing voltage reduction conversion on the voltage of the charging interface and outputting the voltage to the battery, and is used for performing voltage boosting conversion on the voltage of the battery and outputting the voltage to the functional component; and the switch control circuit is connected between the cut-off voltage end and the control end of the first switching device in series and is used for controlling the connection and the cut-off between the control end of the first switching device and the cut-off voltage end.

In one possible embodiment, the charging circuit further includes: the first end of the first voltage converter is electrically connected with the charging interface through the second switching device; and a second voltage converter, wherein a first end of the second voltage converter is electrically connected to the second end of the first switching device, and a second end of the second voltage converter is electrically connected to the battery.

In one possible embodiment, the charging circuit further includes: the first end of the first voltage converter is electrically connected with the charging interface through the second switching device; the first end of the third switching device is electrically connected with the charging interface; and a second voltage converter, wherein a first end of the second voltage converter is electrically connected to the second end of the third switching device, and a second end of the second voltage converter is electrically connected to the battery.

In one possible embodiment, the functional component is a flash drive or a near field communication NFC module.

In a second aspect, a charging control method is provided for a charging circuit, the charging circuit including: a charging interface; the first end of the first voltage converter is electrically connected with the charging interface; a battery electrically connected to the second end of the first voltage converter; the first end of the first switch device is electrically connected with the charging interface; a functional component; the functional component voltage converter is electrically connected to the second end of the first switching device, the functional component and the battery, and is used for performing voltage reduction conversion on the voltage of the charging interface and outputting the voltage to the battery, and is used for performing voltage boosting conversion on the voltage of the battery and outputting the voltage to the functional component; the method comprises the following steps: acquiring charging information corresponding to a charging interface; when the charging information corresponding to the charging interface meets a preset condition, controlling the first switch device to be conducted, controlling the functional component voltage converter to convert the voltage provided by the charging interface, outputting the voltage to the battery after voltage reduction, and directly outputting the voltage provided by the charging interface to the functional component; when the charging information corresponding to the charging interface does not meet the preset condition, controlling a first switch device to be cut off; after the first switching device is controlled to be turned off, the functional component voltage converter is controlled to convert the voltage provided by the battery, boost the voltage and output the voltage to the functional component.

In one possible embodiment, the charging information is a voltage provided by the charging interface; the acquiring of the charging information of the charging interface comprises: acquiring voltage provided by a charging interface; when the charging information of the charging interface does not meet the preset condition, the process of controlling the first switch device to be cut off comprises the following steps: when the voltage provided by the charging interface does not meet the preset condition, controlling the first switching device to be cut off; when the charging information that the interface that charges corresponds satisfies the preset condition, control first switching device and switch on to control function part voltage converter carries out voltage transformation with the voltage that the interface provided that charges, exports to the battery after the step-down, and the process that directly exports the voltage that the interface provided that will charge to the function part includes: when the voltage provided by the charging interface meets the preset condition, the first switch device is controlled to be switched on, the functional component voltage converter is controlled to convert the voltage provided by the charging interface, the voltage is output to the battery after being reduced, and the voltage provided by the charging interface is directly output to the functional component.

In one possible implementation, the charging circuit further includes: the functional component is a flash driver; before acquiring the voltage provided by the charging interface, the method further comprises: responding to a shooting preview instruction, determining whether the current charging mode is adopted, if so, entering a process of acquiring voltage provided by a charging interface, and if not, entering the shooting preview mode; when the voltage provided by the charging interface meets a preset condition, controlling the charging interface to output first power; after the first switching device is controlled to be switched off, the power output by the charging interface is controlled to be larger than the first power.

In a possible implementation, before the process of controlling the first switching device to be turned off, the method further includes: when the voltage provided by the charging interface does not meet the preset condition, acquiring a current value provided by the charging interface; if the current value reaches the threshold value, a first switching process is entered, wherein the first switching process comprises the following steps: controlling the charging interface to output first power; after controlling the charging interface to output the first power, controlling the first switching device to be cut off; after the first switching device is controlled to be switched off, the first power output by the charging interface is controlled to be gradually increased to the second power in the first time period, the voltage converter of the functional component is controlled to perform voltage conversion on the voltage provided by the battery, the voltage is output to the functional component after being boosted, and the second power is larger than the first power; if the current value does not reach the threshold value, entering a second switching process, wherein the second switching process comprises the following steps: controlling the charging interface to output first power; after controlling the charging interface to output the first power, controlling the first switching device to be cut off; after the first switching device is controlled to be turned off, the first power output by the charging interface is controlled to be changed into third power in a second time period, the functional component voltage converter is controlled to convert the voltage provided by the battery, the voltage is boosted and then output to the functional component, the second time period is smaller than the first time period, and the third power is larger than the first power.

In one possible embodiment, the charging information is a type of a charger connected to the charging interface; the acquiring of the charging information of the charging interface comprises: acquiring the type of a charger connected with a charging interface; before acquiring the charging information of the charging interface, the method further comprises the following steps: in a shooting mode or a shooting preview mode, when the charging interface is connected to the charger, acquiring the type of the charger connected with the charging interface; when the charging information of the charging interface does not meet the preset condition, the process of controlling the first switch device to be cut off comprises the following steps: when the type of a charger connected with the charging interface does not meet a preset condition, controlling a first switch device to be cut off; when the charging information that the interface that charges corresponds satisfies the preset condition, control first switching device and switch on to control function part voltage converter carries out voltage transformation with the voltage that the interface provided that charges, exports to the battery after the step-down, and the process that directly exports the voltage that the interface provided that will charge to the function part includes: when the type of the charger connected with the charging interface meets the preset condition, the first switch device is controlled to be switched on, the functional component voltage converter is controlled to convert the voltage provided by the charging interface, the voltage is output to the battery after being reduced, and the voltage provided by the charging interface is directly output to the functional component.

In one possible embodiment, the charge control method further includes: when the type of a charger connected with the charging interface meets a preset condition, controlling the charging interface to output first power; and after the first switching device is controlled to be switched off, the charging interface is controlled to output fourth power, and the first power is smaller than the fourth power.

In one possible embodiment, when the type of the charger to which the charging interface is connected does not satisfy the preset condition, the process of controlling the first switching device to be turned off includes: when the type of a charger connected with the charging interface does not meet a preset condition and the charging circuit supports charging based on power except the first power output by the current charger, controlling the first switching device to be switched off; the method further comprises the following steps: when the type of the charger connected with the charging interface does not meet the preset condition and the charging circuit does not support charging based on power except the first power output by the current charger, the first switching device is controlled to be switched on, the functional component voltage converter is controlled to convert the voltage provided by the charging interface, the voltage is output to the battery after being reduced, the voltage provided by the charging interface is directly output to the functional component, and the charging interface is controlled to output the first power.

In a third aspect, there is provided a control apparatus comprising a processor and a memory, the memory being arranged to store at least one instruction which is loaded and executed by the processor to implement the method described above.

In a fourth aspect, an electronic device is provided, which includes the charging circuit and the control device.

In a fifth aspect, there is provided a computer-readable storage medium having stored therein a computer program which, when run on a computer, causes the computer to execute the charging control method described above.

According to the charging circuit, the charging control method, the charging control device, the electronic equipment and the storage medium in the embodiment of the application, the first switch device is controlled based on the charging information corresponding to the charging interface, when the voltage provided by or to be provided by the charging interface cannot be borne by the functional component, the first switch device is controlled to be turned off, so that the situation that the functional component is directly supplied with power through the charging interface is avoided, the functional component is supplied with power through reverse voltage conversion of the functional component voltage converter, meanwhile, the charging interface supplies power to the first voltage converter, the first voltage converter can be charged for a battery by taking higher voltage and larger current as input, namely, the backspacing of a charging mode can be omitted, the normal operation of the electronic equipment is ensured, and the charging efficiency is improved. In addition, the embodiment of the application realizes the multiplexing of the voltage converter of the functional component by utilizing the switching device, realizes that the voltage required by the voltage converter can be provided for the functional component in the fast charging mode, has small change to the existing devices and circuits at present, and does not need to arrange an additional driving chip for the functional component, so the cost is lower.

Drawings

FIG. 1 is a block diagram of an electronic device;

FIG. 2 is a schematic diagram of an electronic device connected to a charger;

fig. 3 is a block diagram illustrating a structure of a portion of an electronic device according to the related art;

fig. 4 is a block diagram of a partial structure of an electronic device in an embodiment of the present application;

FIG. 5 is a schematic current flow diagram of the charging circuit of FIG. 4;

FIG. 6 is another schematic current flow diagram of the charging circuit of FIG. 4;

fig. 7 is a schematic flowchart of a charging control method according to an embodiment of the present application;

fig. 8 is a schematic flowchart of another charging control method according to an embodiment of the present application;

fig. 9 is a schematic flowchart of another charging control method according to an embodiment of the present application;

FIG. 10 is a schematic diagram showing comparison of time axes in three scenarios according to the embodiment of the present application;

fig. 11 is a schematic flowchart of another charging control method according to an embodiment of the present application;

fig. 12 is a schematic flowchart of another charging control method according to an embodiment of the present application;

FIG. 13 is a block diagram of a portion of another electronic device of the present application;

fig. 14 is a block diagram showing a partial structure of another electronic device according to the present application.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

First, an electronic device according to an embodiment of the present application will be described, and fig. 1 shows a schematic configuration diagram of an electronic device 100.

The electronic device 100 may include a processor 110, a Universal Serial Bus (USB) interface 130, a charge management module 140, a power management module 141, a battery 142, a camera 193, a display screen 194, and the like.

It is to be understood that the illustrated structure of the embodiment of the present invention does not specifically limit the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown, or combine certain components, or split certain components, or arrange different components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 110 may include one or more processing units, such as: the processor 110 may include an Application Processor (AP), a modem processor, a Graphics Processor (GPU), an Image Signal Processor (ISP), a controller, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), among others. The different processing units may be separate devices or may be integrated into one or more processors.

The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution.

A memory may also be provided in processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 110. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Avoiding repeated accesses reduces the latency of the processor 110, thereby increasing the efficiency of the system.

In some embodiments, processor 110 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface, etc.

The USB interface 130 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 130 may be used to connect a charger to charge the electronic device 100, and may also be used to transmit data between the electronic device 100 and a peripheral device. And the earphone can also be used for connecting an earphone and playing audio through the earphone. The interface may also be used to connect other electronic devices, such as AR devices and the like.

It should be understood that the connection relationship between the modules according to the embodiment of the present invention is only illustrative, and is not limited to the structure of the electronic device 100. In other embodiments of the present application, the electronic device 100 may also adopt different interface connection manners or a combination of multiple interface connection manners in the above embodiments.

The charging management module 140 is configured to receive charging input from a charger. The charger can be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive charging input from a wired charger via the USB interface 130. In some wireless charging embodiments, the charging management module 140 may receive a wireless charging input through a wireless charging coil of the electronic device 100. The charging management module 140 may also supply power to the electronic device through the power management module 141 while charging the battery 142.

The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140 and provides power to the processor 110, the display 194, the camera 193, and the like. The power management module 141 may also be used to monitor parameters such as battery capacity, battery cycle count, battery state of health (leakage, impedance), etc. In some other embodiments, the power management module 141 may also be disposed in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be disposed in the same device.

The display screen 194 is used to display images, video, and the like. In some embodiments, the electronic device 100 may include 1 or N display screens 194, N being a positive integer greater than 1.

The electronic device 100 may implement a shooting function through the ISP, the camera 193, the video codec, the GPU, the display 194, the application processor, and the like.

The camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image to the photosensitive element. In some embodiments, electronic device 100 may include 1 or N cameras 193, N being a positive integer greater than 1.

The electronic device 100 may further include a flash (not shown) cooperating with the camera 193, and a flash driver, which may be a current source, for example, and drives the flash to emit light by the current generated by the current source, wherein the flash is used for implementing a light supplement function during the shooting process of the camera 193.

As shown in fig. 2, the electronic device 100 may be connected to a charger 200 through a USB interface, and a battery in the electronic device 100 is charged through the charger 200.

Before describing the embodiments of the present application, first, the scenario and technical problems in the related art related to the present application will be described, as shown in fig. 3, in the related art, the electronic device may be a mobile phone, the functional component voltage converter may boost and convert the voltage of the battery to supply power to the flash lamp driver when the electronic device is not charged, the mobile phone is connected to a charger (not shown in fig. 3) through a charging interface, the charger supplies power to the electronic device through the charging interface, during charging, the charging voltage converter and the functional component voltage converter are used to perform voltage conversion on the voltage supplied by the charging interface and output the voltage to the battery to charge the battery, during the standard charging mode, the charger outputs 5V voltage 2A current through the charging interface, i.e. the charging power is 10W, when the voltage and the current output to the voltage converter and the flash lamp driver are small, the voltage of a charging interface, namely 5V voltage, can be provided for a flash lamp driver while charging a battery through a functional component voltage converter so as to drive the flash lamp to normally work, when a mobile phone works in a fast charging mode, for example, when a fast charging charger is connected, the charger outputs a voltage higher than 5V and a current higher than 2A through the charging interface, the fast charging charger outputs a current of 11V voltage 6A, namely charging power of 66W, however, the flash lamp driver has lower withstand voltage, can only normally work under the voltage lower than 5.7V, cannot be driven based on the higher voltage, if the fast charging charger is still enabled to output the current of 11V voltage 6A, the flash lamp driver is powered through the 11V voltage, which may cause abnormal operation or damage of the flash lamp driver, therefore, in order to solve the problem that the flash lamp driver has lower withstand voltage and the fast charging charger has higher output voltage, the charger needs to be controlled to return to the standard charging mode, that is, the charger is controlled to return to the output of lower 5V voltage 2A current through the charging interface, so as to ensure that the flash lamp driver can work normally, but the charging efficiency is lower at this time. For example, in the standard charging mode, 10W of charging power is used, the charging time required for full charging is 1 hour, and for a mobile phone with the same electric quantity, in the fast charging mode, 66W of charging power is used, the charging time required for full charging is 15 minutes, even in scenes such as live broadcasting, the power consumption of the mobile phone is large, and the charging requirement may not be met in the standard charging mode. If it is further ensured that the flash lamp driver can work normally and the mobile phone is made to work in the fast charging mode, an additional flash lamp driving chip is required, which may result in increased cost.

As shown in fig. 4, an embodiment of the present application provides a charging circuit, including: the charging interface 1 is used for connecting an external charger (not shown in fig. 4), and in the charging process, the charger supplies power to the electronic device through the charging interface 1; at least one first voltage converter 21, wherein a first end of the first voltage converter 21 is electrically connected to the charging interface 1; a battery 142, the battery 142 being electrically connected to the second end of the first voltage converter 21; the first end of the first switching device M1 is electrically connected to the charging interface 1; a functional component 4; a functional component voltage converter 20, the functional component voltage converter 20 being electrically connected to the second end of the first switching device M1, the functional component 4 and the battery 142, the functional component voltage converter 20 being configured to down-convert the voltage of the charging interface 1 and output the voltage to the battery 142, and being configured to up-convert the voltage of the battery 142 and output the voltage to the functional component 4, that is, the functional component voltage converter 20 being a bidirectional voltage converter; and the switch control circuit 3 is connected in series between the cut-off voltage end V0 and the control end of the first switching device M1, and the switch control circuit 3 is used for controlling the connection and the disconnection between the control end of the first switching device M1 and the cut-off voltage end V0. The control terminal of the first switching device M1 is configured to control on and off between the first terminal and the second terminal of the first switching device M1, the off power terminal V0 is configured to provide an off Voltage, and the off Voltage refers to a Voltage that can be used for turning off the first switching device M1, for example, if the first switching device M1 is a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), and the off Voltage corresponding to the N-type MOSFET is a low level, the off Voltage terminal V0 can be configured to provide a ground potential, for example, a low level of 0V, and the first switching device M1 can be reused as an Over Voltage Protection (OVP) switching device, that is, in a non-overvoltage scenario, if no Voltage is additionally provided to the control terminal of the first switching device M1, the first switching device M1 is turned on, that is, when the switching control circuit 3 is turned off, the off Voltage terminal V0 and the control terminal M1 is turned on, so that the first switching device M1 can be turned on to provide the first switching control Voltage, and the first switching device M1 can be turned on to provide the off Voltage. The specific working process of the charging circuit can be explained in detail by combining the principle with the subsequent charging control method.

An embodiment of the present application further provides a charging control method, which can be used in the charging circuit described above, and the method includes: acquiring charging information corresponding to the charging interface 1; as shown in fig. 5, when the charging information corresponding to the charging interface 1 does not satisfy the preset condition, the first switch device M1 is controlled to be turned off, and the fact that the charging information corresponding to the charging interface 1 does not satisfy the preset condition means that the voltage currently provided by the charging interface 1 or the voltage to be provided cannot be borne by the functional component 4, for example, the voltage currently provided by the charging interface 1 or the voltage to be provided is the voltage in the fast charging mode, so that the first switch device M1 is controlled to be turned off, and the higher voltage of the charging interface 1 is prevented from being directly provided to the functional component 4; after controlling the first switching device M1 to be turned off, the functional component voltage converter 20 is controlled to convert the voltage provided by the battery 142, and the converted voltage is output to the functional component 4 after boosting, so that the functional component 4 can be driven even if the voltage provided by the charging interface 1 is not provided to the functional component 4, and at this time, the voltage provided by the charging interface 1 can be converted by the first voltage converter 21 and then the battery 142 is charged, so that the battery can still be charged by the charging interface 1 through the first voltage converter 21, and since the voltage provided by the charging interface 1 does not affect the functional component 4, at this time, a more efficient fast charging mode can be used for charging; as shown in fig. 6, when the charging information corresponding to the charging interface 1 meets a preset condition, the first switching device M1 is controlled to be turned on, and the functional component voltage converter 20 is controlled to perform voltage conversion on the voltage provided by the charging interface 1, and output the voltage to the battery 142 after voltage reduction, and directly output the voltage provided by the charging interface 1 to the functional component 4, where the preset condition that the charging information corresponding to the charging interface 1 meets the preset condition means that the voltage currently provided by the charging interface 1 or the voltage to be provided can be borne by the functional component 4, for example, the voltage currently provided by the charging interface 1 or the voltage to be provided is the voltage in the standard charging mode, and the voltage can be borne by the functional component 4, so that the first switching device M1 can be controlled to be turned on, so that the voltage provided by the charging interface 1 is subjected to voltage conversion by the first voltage converter 21 and the functional component voltage converter 20 to charge the battery 142, and meanwhile, the voltage provided by the charging interface 1 is directly provided to the functional component 4 after passing through the functional component voltage converter 20, so as to drive the functional component 4 to operate. The above-mentioned control of turning on and off the first switching device M1 may be implemented based on the switch control circuit 3, when the switch control circuit 3 is controlled to be turned on, the voltage of the cut-off voltage terminal V0 is transmitted to the control terminal of the first switching device M1, so as to control the first switching device M1 to be turned off; when the control switch control circuit 3 is turned off, the off voltage terminal V0 and the control terminal of the first switching device M1 are turned off, and the first switching device M1 can be turned on by itself through the circuit structure. It is to be understood that, in other possible embodiments, the charging circuit may not be provided with the switch control circuit 3, and the control of turning on and off the first switching device M1 may be achieved by directly outputting the on level and the off level to the control terminal of the first switching device M1.

According to the charging circuit and the charging control method in the embodiment of the application, the first switch device is controlled based on the charging information corresponding to the charging interface, when the voltage provided by the charging interface or to be provided by the charging interface cannot be borne by the functional component, the first switch device is controlled to be turned off so as to avoid the situation that the functional component is directly supplied with power through the charging interface, the reverse voltage of the functional component voltage converter is used for converting the reverse voltage to supply power for the functional component, meanwhile, the charging interface supplies power for the first voltage converter, the first voltage converter can be enabled to charge a battery by taking higher voltage and larger current as input, namely, the backspacing of a charging mode is not needed, meanwhile, the normal operation of electronic equipment is guaranteed, and the charging efficiency is improved. In addition, the embodiment of the application realizes the multiplexing of the voltage converter of the functional component by utilizing the switching device, realizes that the voltage required by the voltage converter can be provided for the functional component in the fast charging mode, has small change to the existing devices and circuits at present, and does not need to arrange an additional driving chip for the functional component, so the cost is lower.

In one possible embodiment, the charging information is a voltage provided by the charging interface 1; acquiring the charging information of the charging interface 1 includes: when the charging information of the charging interface 1 does not satisfy the preset condition, the process of controlling the first switching device M1 to be turned off includes: when the voltage provided by the charging interface 1 does not meet the preset condition, controlling the first switching device M1 to be switched off; when the charging information that interface 1 corresponds charges satisfies the preset condition, control first switching device M1 and switch on to control function part voltage converter carries out voltage transformation with the voltage that the interface provided charges, exports to the battery after the step-down, and the process of directly exporting to function part 4 with the voltage that interface 1 provided that charges includes: when the voltage provided by the charging interface 1 meets the preset condition, the first switch device M1 is controlled to be switched on, the functional component voltage converter is controlled to convert the voltage provided by the charging interface, the voltage is output to the battery after being reduced, and the voltage provided by the charging interface 1 is directly output to the functional component 4. That is, as shown in fig. 7, the charge control method includes:

step 101, acquiring voltage provided by a charging interface 1;

step 102, determining whether the voltage provided by the charging interface 1 meets a preset condition, if not, entering step 103 and controlling a first switching device M1 to be turned off when the voltage provided by the charging interface 1 does not meet the preset condition; after the step 103, controlling the first switching device M1 to be turned off, the step 104 is entered, controlling the functional component voltage converter 20 to convert the voltage provided by the battery 142, and output the voltage to the functional component 4 after boosting the voltage, if so, that is, when the voltage provided by the charging interface 1 meets the preset condition, the step 105 is entered, controlling the first switching device M1 to be turned on, controlling the functional component voltage converter 20 to convert the voltage provided by the charging interface 1, output the voltage to the battery 142 after reducing the voltage, and directly output the voltage provided by the charging interface 1 to the functional component 4.

Specifically, the preset condition may be a preset voltage range or a preset voltage value, the preset condition is related to the withstand voltage of the functional component 4, the withstand voltage of the functional component 4 can normally operate when the preset condition is satisfied, and the functional component 4 cannot normally operate when the preset condition is not satisfied, for example, the following description is given by taking a preset voltage value with a preset condition of 5V as an example, the functional component 4 can normally operate only based on a voltage of 5V, and other voltage values cannot normally operate. The voltage provided by the charging interface 1 is the voltage output by the charger connected to the charging interface 1, for example, if the charger plugged into the charging interface 1 is a standard charger rather than a quick-charging charger, since the voltage provided by the standard charger through the charging interface 1 is 5V, in step 102, it is determined that the voltage provided by the charging interface 1 satisfies a preset condition, which indicates that the voltage provided by the charging interface 1 can drive the functional component 4 to normally operate, so that the first switching device M1 is controlled to be turned on, the charging interface 1 can supply power to the first voltage converter 21, the functional component voltage converter 20 and the functional component 4, the first voltage converter 21 and the functional component voltage converter 20 perform voltage conversion and charge the battery 142, the electronic device can operate in a standard charging mode, for example, the charging interface 1 outputs 5V voltage 2A current, that is, i.e., outputs 10W power, the functional component 4 can be driven to normally operate based on the voltage provided by the charging interface 1, the functional component voltage converter 20 is a bidirectional voltage converter, at this time, the functional component voltage converter 20 can convert the voltage provided by the functional component voltage 1 and output the voltage provided by the battery 142, that the electronic device 142 directly outputs the voltage provided by the charging interface 1, that the charging interface 142 is based on the charging interface 142, that the electronic device 142, and the electronic device 142 outputs the voltage provided by the charging interface 1 is directly; if it is determined that the voltage provided by the charging interface 1 does not satisfy the preset condition, for example, the voltage exceeds 5V, it indicates that the charger is a fast-charging charger, and the voltage provided by the charging interface 1 cannot drive the functional component 4 to normally operate at this time, therefore, the first switching device M1 is controlled to be turned off, the charging interface 1 can supply power to the first voltage converter 21, at this time, the first voltage converter 21 performs voltage conversion based on the voltage higher than 5V and the current greater than 2A and charges the battery 142, because the first switching device M1 is turned off, the charging interface 1 cannot supply power to the functional component voltage converter 20 and the functional component 4, and because the functional component voltage converter 20 is a bidirectional voltage converter, the functional component voltage converter 20 can boost the voltage provided by the battery 142 to convert the output voltage of 5V and provide the output voltage to the functional component 4, so that the functional component 4 can normally operate, and at the same time, the charging interface 1 can provide a larger voltage and current to charge the battery 142, so as to satisfy the charging requirement and improve the charging efficiency. For example, when the first switching device M1 is turned off, the charger supplies a voltage of 10V and a current of 4A, that is, 40W of power through the charging interface 1, the first voltage converter 21 in the charging circuit can charge the battery 142 based on the 40W of charging power, and the functional component voltage converter 20 boosts the voltage of 4.4V supplied from the battery 142 to 5V and supplies the boosted voltage to the functional component 4, so that the functional component 4 can operate normally.

According to the charging control method in the embodiment of the application, the first switch device is controlled based on the output voltage of the charging interface, when the voltage provided by the charging interface does not meet the preset condition, the first switch device is controlled to be turned off so as to avoid directly supplying power to the functional component through the charging interface, the reverse voltage conversion of the functional component voltage converter is used for supplying power to the functional component, meanwhile, the charging interface supplies power to the first voltage converter, the first voltage converter can be enabled to charge a battery by taking higher voltage and larger current as input, namely, the backspacing of a charging mode can be omitted, and meanwhile, the normal operation of electronic equipment is guaranteed, so that the charging efficiency is improved. In addition, the embodiment of the application realizes the multiplexing of the voltage converter of the functional component by utilizing the switching device, realizes that the voltage required by the voltage converter can be provided for the functional component in the fast charging mode, has small change to the existing devices and circuits at present, and does not need to arrange an additional driving chip for the functional component, so the cost is lower.

In a possible embodiment, where the functional component 4 is a flash driver, as shown in fig. 8, before acquiring the voltage provided by the charging interface 1 in step 101, the method further includes: step 106, responding to a shooting preview instruction, determining whether the current mode is a charging mode, if so, entering step 101, obtaining the voltage provided by the charging interface 1, if not, executing step 107, entering the shooting preview mode, and in the shooting preview mode, without charging through the charging interface 1, the functional component voltage converter 20 boosts the 4.4V voltage of the battery 142 to 5V and then provides the boosted voltage to a flash lamp driver, so that a flash lamp flashing function can be realized in a shooting scene;

in the step 102, when the voltage provided by the charging interface 1 meets the preset condition, the step 105 is performed, the first switching device M1 is controlled to be turned on, the functional component voltage converter 20 is controlled to perform voltage conversion on the voltage provided by the charging interface 1, the voltage is output to the battery 142 after being reduced, the voltage provided by the charging interface 1 is directly output to the functional component 4, the step 109 is performed, the charging interface is controlled to output the first power, and it is assumed that the charging interface 1 outputs 5V voltage and 2A current, that is, the first power is 10W;

after step 103, controlling the first switching device M1 to be turned off, step 108 is executed, the power output by the charging interface 1 is controlled to be greater than the first power, for example, the charging interface 1 outputs a voltage of 10V and a current of 4A, the output power is 40W, and after step 103, step 104 is executed, the functional component voltage converter 20 is controlled to perform voltage conversion on the voltage provided by the battery 142, and output the voltage to the functional component 4 after boosting, for example, the voltage of 4.4V of the battery 142 is boosted to 5V to supply power to the flash driver, so that the flash driver can normally operate to realize the flash function, that is, after step 103, controlling the first switching device M1 to be turned off, the shooting preview mode is executed.

Specifically, a flash driver, such as a current source, is used to drive the flash to emit light. When a shooting preview instruction is acquired, firstly, in step 106, it is determined whether the current mode is a charging mode, if not, it is determined that the charging interface 1 is not connected with a charger, so that step 107 can be directly executed, the shooting preview mode is entered, at this time, the battery 142 is not charged through the charging interface 1, the functional component voltage converter 20 works in a reverse boost mode, and boosts the voltage of 4.4V provided by the battery 142 to 5V and outputs the boosted voltage to the functional component 4, so that power supply for driving a flash lamp in the shooting preview mode is realized, and the normal operation of the flash lamp is ensured. In step 106, it is determined whether the current charging mode is currently in the charging mode, if yes, step 101 and step 102 are performed, assuming that the preset condition is 5V voltage, that is, it is determined whether the voltage provided by the charging interface 1 is 5V in step 102, if yes, it is indicated that the current charging mode is the standard charging mode, that is, the charging interface 1 outputs 5V voltage and 2A current, that is, the battery 142 is charged based on 10W charging power, that is, the voltage provided by the charging interface 1 can drive the flash lamp driver to normally operate, so that the flash lamp driver can be controlled to enter the shooting preview mode in a state where the first switch device M1 is turned on. In step 102, it is determined whether the voltage provided by the charging interface 1 is 5V, and if not, it indicates that the voltage provided by the charging interface 1 cannot drive the flash driver to normally operate, so that it is necessary to control the first switch device M1 to be turned off in step 103, then execute

steps

108 and 104, and enter a shooting preview mode, where the charging mode is a fast charging mode, that is, the charging interface 1 provides 10V voltage and 4A current, that is, charging is performed based on 40W charging power, on one hand, higher charging efficiency can be ensured, on the other hand, higher voltage provided by the charging interface 1 can be prevented from being transmitted to the flash driver, and in addition, after controlling the first switch device M1 to be turned off, step 104 is entered, the control function component voltage converter 20 performs voltage conversion on the 4.4V voltage provided by the battery 142, and outputs 5V voltage to the flash driver after boosting, so as to drive the flash driver to normally operate in the shooting preview mode, and ensure that the flash driver can normally operate to implement a flash or light charging function.

In a possible implementation manner, as shown in fig. 9, before the process of controlling the first switching device M1 to be turned off in step 103, the method further includes: when the voltage provided by the charging interface 1 does not meet the preset condition, the method enters step 110, obtains the current value provided by the charging interface 1, and enters step 111, determines whether the current value reaches the threshold value, if the threshold value is 3.6A, that is, if the current value reaches the threshold value, if the current value is greater than or equal to 3.6A, the method enters a first switching process S1. In the embodiment of the present application, the manner of obtaining the current value provided by the charging interface 1 is not limited, for example, the current value provided by the charging interface 1 may be directly detected by a detection circuit, or for example, the current of the battery 142 is detected by a current detection device 5 disposed in the charging circuit, and since the current value of the battery 142 has a correlation with the current value of the charging interface 1, the current value provided by the charging interface 1 may be determined according to the detected current value of the battery 142.

The first switching process S1 includes:

step 112, controlling the charging interface 1 to output a first power, for example, the charging interface 1 outputs a 5V voltage 2A current, that is, the first power is 10W; after the charging interface 1 is controlled to output the first power in step 112, the process proceeds to step 103, and the first switching device M1 is controlled to be turned off; after the step 103 of controlling the first switching device M1 to be turned off, the step 1081 of controlling the first power output by the charging interface 1 to be gradually increased to the second power in a first time period t1, where the first time period t1 is, for example, 30 seconds, that is, the charging interface 1 gradually increases the output voltage and the current, and increases the output voltage 2A current from the output 5V voltage 2A to the output 10V voltage 4A current in about 30 seconds, that is, increases the second power to the output 40W, and the step 104 of controlling the functional component voltage converter 20 to perform voltage conversion on the voltage provided by the battery 142, to output the voltage to the functional component 4 after being boosted, and entering the shooting preview mode after the step 103 is performed;

in step 111, in the process of determining whether the current value reaches the threshold, if not, that is, if the current value does not reach the threshold, if the current value is less than 3.6A, the method enters a second switching process S2, where the second switching process S2 includes:

step 112, controlling the charging interface 1 to output a first power, for example, the charging interface 1 outputs a 5V voltage 2A current, that is, the first power is 10W; after the charging interface 1 is controlled to output the first power in step 112, the process proceeds to step 103, and the first switching device M1 is controlled to be turned off; after controlling the first switching device M1 to be turned off at step 103, step 1082 is executed to control the first power output by the charging interface 1 to be changed to the third power within a second time period t2, where the second time period t2 may be in the order of milliseconds, for example, at step 1082, the charging interface 1 may be directly changed from outputting 5V voltage 2A current to outputting 10V voltage 2A current, that is, directly changing the charging interface 1 from outputting 10W to outputting 20W of the third power, where the third power is greater than the first power, within 1 second, and step 104, controlling the functional component voltage converter 20 to perform voltage conversion on the voltage provided by the battery 142, boost the voltage to be output to the functional component 4, and enter the shooting preview mode after step 103.

Specifically, in the flow shown in fig. 9, steps 106, 107, 101, 102, 105, and 109 are all the same as the process shown in fig. 8, and since there are many steps, steps 106 and 107 are omitted in fig. 9, and the specific processes of the above steps are not repeated here, except that, in step 102, it is determined whether the voltage provided by the charging interface 1 is 5V, if not, it is described that the voltage provided by the charging interface 1 cannot drive the flash lamp driver to operate normally, at this time, a current value provided by the charging interface 1 is obtained in step 110, and it is determined whether the current value reaches 3.6A in step 111, if not, the first switching process S2 is executed, if yes, the second switching process S1 is executed, in both the first switching process S1 and the second switching process S2, it is necessary to first cause the power provided by the charging interface 1 to be backed off to the first power, that is 5V voltage 2A current, then the first switching device M1 is controlled to be turned off, and then the power output by the first switching process is increased to a larger power, so that it is possible to prevent direct control the first switching device M1 from being turned off. The first switching process S1 and the second switching process S2 are different only in step 1081 and step 1082, in step 1081, the 10W power output by the charging interface 1 is gradually increased to 40W power within a relatively long time, and then charging is performed based on the 40W power, so as to avoid the problem of error reporting caused by directly switching the first power to the relatively large second power, which affects user experience; on the other hand, in step 1082, since the detected current is small, the influence of the direct switching power on the circuit is small, and therefore, in order to increase the charging speed, the 10W power output from charging interface 1 may be increased to the large third power 20W in milliseconds. Further, the control of the output of charging interface 1 in step 112 can be realized by transmitting a command to the charger connected to charging interface 1.

The flow shown in fig. 9 will be described below with reference to the time axis relationship shown in fig. 10 by means of several specific scenarios.

In the scene a, before entering the shooting preview mode, the charger outputs a 5V voltage 2A current through the charging interface 1, that is, operates in the 10W standard charging mode, determines that the voltage of the charging interface 1 is 5V, and meets a preset condition, keeps the first switching device M1 turned on, directly enters the shooting preview mode, and continues to charge the battery 142 based on the 5V voltage 2A current, wherein the functional component voltage converter 20 performs voltage conversion on the voltage provided by the charging interface 1, and outputs the voltage to the battery 142 after voltage reduction, and directly outputs the voltage provided by the charging interface 1 to the functional component 4, that is, simultaneously drives the flash lamp driver through the 5V voltage.

In a scene B, before entering the shooting preview mode, the charger outputs a 10V voltage 4A current through the charging interface 1, that is, operates in a 40W fast charging mode, determines that the voltage of the charging interface 1 exceeds 5V and does not meet a preset condition, and the 4A current is greater than 3.6A, backs to the charging interface 1 to output a 5V voltage 2A current, then controls the first transistor M1 to be turned off, then enters the shooting preview mode, and increases the charging interface 1 from outputting the 5V voltage 2A current to outputting the 10V voltage 4A current in about 30 seconds, that is, finally realizes 40W fast charging in the shooting preview mode, and controls the functional component voltage converter 20 to perform voltage conversion on the 4.4V voltage provided by the battery 142 and boost the voltage to 5V to output to the flash driver in the shooting preview mode.

In a scene C, before entering the shooting preview mode, the charger outputs a 10V voltage 2A current through the charging interface 1, that is, operates in a 20W fast charging mode, determines that the voltage of the charging interface 1 exceeds 5V and does not meet a preset condition, and the 2A current is less than 3.6A, backs to the charging interface 1 to output a 5V voltage 2A current, then controls the first transistor M1 to be turned off, then enters the shooting preview mode, and directly switches the charging interface 1 from outputting the 5V voltage 2A current to outputting the 10V voltage 2A current for a millisecond-level switching time, that is, finally, 20W fast charging is realized in the shooting preview mode, and in the shooting preview mode, the control function component voltage converter 20 performs voltage conversion on a 4.4V voltage provided by the battery 142, and boosts the voltage to 5V and outputs the voltage to the flash lamp driver. The first time period t1 may be in the range of 10 to 40 seconds, and the second time period t2 may be less than 1 second.

In one possible embodiment, the charging information is the type of charger to which the charging interface 1 is connected; acquiring the charging information of the charging interface 1 includes: acquiring the type of a charger connected with the charging interface 1; when the charging information of the charging interface 1 does not satisfy the preset condition, the process of controlling the first switching device M1 to be turned off includes: when the type of the charger connected with the charging interface 1 does not meet the preset condition, controlling the first switching device M1 to be switched off; when the charging information that interface 1 that charges corresponds satisfies the preset condition, control first switching device M1 and switch on to control functional unit voltage converter 20 carries out voltage transformation with the voltage that interface 1 provided that charges, exports to battery 142 after stepping down, and the process of directly exporting the voltage that interface 1 provided that charges to functional unit 4 includes: when the type of the charger connected to the charging interface 1 meets the preset condition, the first switching device M1 is controlled to be turned on, the functional component voltage converter 20 is controlled to convert the voltage provided by the charging interface 1, the voltage is reduced and then output to the battery 142, and the voltage provided by the charging interface 1 is directly output to the functional component 4. The type of the charger meeting the preset condition means that the voltage output through the charging interface 1 can be borne by the functional component 4, for example, if the type of the charger is a standard charger, the standard charger only outputs 5V voltage 2A current through the charging interface 1, and can be borne by the functional component 4; the type of charger that does not satisfy the predetermined condition means that the voltage output through the charging interface 1 cannot be received by the functional component 4, for example, if the type of charger is a quick charging charger, it outputs a voltage 4A current of, for example, 10V through the charging interface 1, cannot be received by the functional component 4, and exceeds the withstand voltage of the functional component 4. As shown in fig. 11, before acquiring the charging information of charging interface 1, the charging control method further includes: in a shooting mode or a shooting preview mode, when the charging interface 1 is connected to a charger, entering step 201, and acquiring the type of the charger connected to the charging interface 1; then, the method includes the steps of 202, determining whether the type of the charger meets a preset condition, if not, namely when the type of the charger connected with the charging interface 1 does not meet the preset condition, the method proceeds to step 203, controlling the first switching device M1 to be turned off, after the step 203, controlling the first switching device M1 to be turned off, the method proceeds to step 204, controlling the functional component voltage converter 20 to convert the voltage of 4.4V of the battery 142, boosting the voltage to 5V and outputting the voltage to the functional component 4, if so, namely when the type of the charger connected with the charging interface 1 meets the preset condition, the method proceeds to step 205, controlling the first switching device M1 to be turned on, controlling the functional component voltage converter 20 to convert the voltage provided by the charging interface 1, reducing the voltage and outputting the voltage to the battery 142, and directly outputting the voltage provided by the charging interface 1 to the functional component 4.

Specifically, assuming that in the shooting mode or the shooting preview mode, a standard charger capable of outputting only 5V voltage 2A current is inserted into the charging interface 1, the type of the charger can be obtained through a communication process with the charger before charging, and then the first switching device M1 is controlled to be turned on, and the charger directly outputs 5V voltage 2A current through the charging interface 1, that is, the voltage provided by the charging interface 1 can be voltage-converted into the battery 142 through the first voltage converter 21 and the functional component voltage converter 20 for charging, and meanwhile, the functional component voltage converter 20 directly provides the voltage of the charging interface 1 for the functional component 4 for supplying power; assuming that a fast charger capable of outputting 10V voltage 4A current is inserted into the charging interface 1 in the shooting mode or the shooting preview mode, the type of the charger can be obtained through a communication process with the charger before charging, then the first switching device M1 is controlled to be turned off, and then the charger is controlled to start charging through the charging interface 1, at this time, the charging interface 1 can output 10V voltage 4A current, the battery 142 is charged through the first voltage converter 21, and meanwhile, the functional component voltage converter 20 performs voltage conversion on the 4.4V voltage of the battery 142, and outputs the voltage to the functional component 4 after boosting the voltage to 5V, so as to drive the functional component 4 to work normally.

In one possible implementation, as shown in fig. 12, the charging control method further includes: when the type of the charger connected to the charging interface 1 meets the preset condition, step 207 is executed, the charging interface 1 is controlled to output a first power, for example, the charging interface 1 outputs a 5V voltage and 2A current, that is, the first power is 10W; after the first switching device M1 is controlled to be turned off in step 203, the process proceeds to step 206, and the charging interface 1 is controlled to output the fourth power, for example, the charging interface 1 outputs a current with a voltage of 10V and a current of 4A, that is, the fourth power is 40W, and the first power is smaller than the fourth power.

In one possible embodiment, as shown in fig. 12, when the type of the charger to which the charging interface 1 is connected does not satisfy the preset condition, the process of controlling the first switching device M1 to be turned off includes: when the type of a charger connected with the charging interface 1 does not meet a preset condition and the charging circuit supports charging based on power except the first power output by the current charger, controlling the first switching device M1 to be switched off; the charging control method further includes: when the type of the charger connected to the charging interface 1 does not meet the preset condition and the charging circuit does not support charging based on power other than the first power output by the current charger, the first switching device M1 is controlled to be turned on, the functional component voltage converter 20 is controlled to convert the voltage provided by the charging interface 1, the voltage is output to the battery 142 after being reduced, the voltage provided by the charging interface 1 is directly output to the functional component 4, and the charging interface 1 is controlled to output the first power. Namely, the charge control method further includes: when the type of the charger connected to the charging interface 1 does not satisfy the preset condition, the method proceeds to step 208, and determines whether the charging circuit 10 supports charging based on power other than the first power output by the current charger, if so, the method proceeds to step 203, and if not, the method proceeds to

steps

205 and 207.

Specifically, the flow shown in fig. 12 is explained below by three specific scenarios.

Scene one, in the shooting mode or the shooting preview mode, the charging interface 1 is inserted with a standard charger meeting the preset conditions, before charging, the type of the charger is determined through communication with the charger, so that the first switching device M1 is controlled to be turned on and the charger is controlled to output a 5V voltage and a 2A current through the charging interface 1, that is, to output a first power of 10W, and the first voltage converter 21 and the function voltage converter 20 charge the battery 142, wherein the function voltage converter 20 performs voltage conversion on the voltage provided by the charging interface 1, and outputs the voltage to the battery 142 after voltage reduction, and directly outputs the voltage provided by the charging interface 1 to the function 4, that is, the function voltage converter 20 provides the 5V voltage to the function to drive the function to work normally. In scenario one, a standard charger is plugged in, and therefore, the system operates in a standard charging mode.

In a second scenario, in the shooting mode or the shooting preview mode, a fast charger that does not satisfy the preset condition is inserted into the charging interface 1, the fast charger may output 5V voltage and 2A current, that is, output first power 10W, and may also output 10V voltage and 4A current, that is, output 40W power, before charging, the type of the charger is determined through communication with the charger, so that step 208 is entered, it is determined that the charging circuit or the electronic device may support charging based on the current charger output 40W power, so that the first switching device M1 is controlled to be turned off, and then the charger is controlled to output 40W power, that is, output 10V voltage and 4A current, through the charging interface 1, the first voltage converter 21 charges the battery 142 based on 40W power, and the functional component voltage converter 20 performs voltage conversion on the 4.4V voltage provided by the battery 142, and boosts the voltage to 5V and provides the voltage to the functional component 4, so as to drive the functional component 4 to operate normally. And a supportable quick-charging charger is inserted in the scene two, so that the mobile phone works in a quick-charging mode.

In a third scenario, in the shooting mode or the shooting preview mode, a fast charger that does not satisfy the preset condition is inserted into the charging interface 1, the fast charger may output 5V voltage and 2A current, that is, output first power 10W, or may output 10V voltage and 5A current, that is, output 50W power, before charging, the type of the charger is determined through communication with the charger, so that step 208 is performed, it is determined that the charging circuit or the electronic device does not support charging based on the current charger output 50W power, so that the first switching device M1 is controlled to be turned on, and the charger is controlled to output 5V voltage and 2A current, that is, first power through the charging interface 1, and the first voltage converter 21 and the functional component voltage converter 20 charge the battery 142, wherein the functional component voltage converter 20 performs voltage conversion on the voltage provided by the charging interface 1, and outputs the voltage reduced to the battery 142, and directly outputs the voltage provided by the charging interface 1 to the functional component 4, that the functional component 20 provides 5V voltage to the functional component to drive the functional component to operate normally. Three scenarios are plugged with unsupported fast charging chargers, so that the charging mode is returned to the standard charging mode.

In a possible implementation, as shown in fig. 13, on the basis of the structure shown in fig. 4, the charging circuit further includes: a second switching device M2, a first end of the first voltage converter 21 being electrically connected to the charging interface 1 through the second switching device M2; and a second voltage converter 22, wherein a first end of the second voltage converter 22 is electrically connected to the second end of the first switching device M1, and a second end of the second voltage converter 22 is electrically connected to the battery 142. The first switching device M1 and the second switching device M2 may be OVP switching devices, that is, the first switching device M1 and the second switching device M2 are turned on without being controlled and turned off during overvoltage protection, besides, the first switching device M1 is additionally controlled by the switching control circuit 3 to be turned off, the switching control circuit 3 may be controlled by the control device 30 in the electronic device, that is, the first switching device M1 may be additionally controlled to be turned on and off by the control device 30, and specific logic may refer to the control of the first switching device M1 in the charging control method.

In the above-described charge control method, if the first switching device M1 is turned on, the second voltage converter 22 may operate, and charging of a larger power may be achieved by the first voltage converter 21 and the second voltage converter 22, and if the first switching device M1 is turned off, the second voltage converter 22 may not operate and charging may be performed only by the first voltage converter 21. For example, if the first switching device M1 is turned on in the fast charge mode, and the first voltage converter 21 and the second voltage converter 22 are both operated, the battery 142 may be charged based on the charging power of 66W, and if the first switching device M1 is turned off in the fast charge mode, the second voltage converter 22 is not operated, and only the first voltage converter 21 is operated to charge the battery 142, and only the charging power of 40W may be achieved. In addition, the operation modes of the first voltage converter 21 and the second voltage converter 22 are not limited in the present application, as long as the functions in the above charging control method are satisfied, for example, as shown in fig. 8 and 13, in one scenario, before entering a shooting preview interface, the first voltage converter 21 and the second voltage converter 22 both operate, at this time, the battery 142 is charged based on 66W power provided by the charging interface 1, the operation is in a fast charging mode, shooting is required in response to a shooting preview instruction, at this time, it is determined in step 102 that the voltage provided by the charging interface 1 does not satisfy a preset condition, so step 103 is entered, the first switching device M1 is controlled to be turned off, the charging interface is controlled to output 40W power, the battery 142 is charged through the first voltage converter 21, and at this time, the second voltage converter 22 does not operate; in another scenario, before entering the shooting preview interface, the first voltage converter 21 does not operate, the second voltage converter 22 operates, the battery 142 is charged based on the 30W power provided by the charging interface 1, the shooting mode is operated in the fast charging mode, and shooting is required in response to a shooting preview instruction, at this time, it is determined in step 102 that the voltage provided by the charging interface 1 does not satisfy the preset condition, so that step 103 is entered, the first switching device M1 is controlled to be turned off, at this time, the first voltage converter 21 needs to be controlled to be turned on, the charging interface outputs the 30W power, the battery 142 is charged through the first voltage converter 21, and at this time, the second voltage converter 22 does not operate.

In a possible implementation, as shown in fig. 14, based on the structure shown in fig. 4, the charging circuit further includes: a second switching device M2, a first end of the first voltage converter 21 being electrically connected to the charging interface 1 through the second switching device M2; a third switching device M3, wherein a first end of the third switching device M3 is electrically connected to the charging interface 1; and a second voltage converter 22, wherein a first end of the second voltage converter 22 is electrically connected to the second end of the third switching device M3, and a second end of the second voltage converter 22 is electrically connected to the battery 142. The second voltage converter 22 in fig. 14 functions similarly to the second voltage converter 22 in fig. 13, and is mainly used for charging the battery 142 together with the first voltage converter 21 in the fast charge mode, wherein each of the first switching device M1, the second switching device M2 and the third switching device M3 may be an OVP switching device. In the configuration shown in fig. 14, when the first switching device M1 is controlled to be turned off, the battery 142 can still be charged simultaneously using the first voltage converter 21 and the second voltage converter 22, and when the first switching device M1 is controlled to be turned off, the battery 142 can be charged using a larger number of voltage converters than in the configuration shown in fig. 13.

The first, second and third switching devices M1, M2 and M2 may be, for example, MOSFETs, wherein the first terminal is one of a source and a drain, the second terminal is the other of the source and the drain, and the control terminal is a gate. It is understood that in other possible embodiments, each switching device may be replaced by another device as long as the switching function can be achieved. In addition, the charging interface 1 in the embodiment of the present application may be a USB interface.

In addition, in other possible embodiments, a greater number of voltage converters may be included in the electronic device, and in the technical solution of the embodiment of the present application, it is only necessary to control the functional component voltage converter 20 and the functional component 4 to be electrically disconnected from the charging interface 1 in the fast charging mode, and control the functional component voltage converter 20 to supply power to the functional component 4.

In one possible embodiment, the functional component 4 is a flash drive or a Near Field Communication (NFC) module. In some specific scenarios, if the functional component cannot operate based on the voltage provided by the charging interface 1 in the fast charging mode, the method in the embodiment of the present application may be applied to disconnect the electrical connection between the functional component 4 and the charging interface 1, and use the functional component voltage converter to supply power to the functional component.

The embodiment of the present application further provides a control device, which includes a processor and a memory, where the memory is used to store at least one instruction, and the instruction is loaded and executed by the processor to implement the charging control method in any of the above embodiments. The specific process and principle of the charging control method are the same as those of the above embodiments, and are not described herein again.

The number of processors may be one or more, and the processors and memory may be connected by a bus or other means. The memory, which is a non-transitory computer readable storage medium, may be used to store non-transitory software programs, non-transitory computer executable programs, and modules, such as program instructions/modules corresponding to the control device of the electronic device in the embodiments of the present application. The processor executes various functional applications and data processing by executing non-transitory software programs, instructions and modules stored in the memory, i.e., implementing the methods in any of the method embodiments described above. The memory may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; and necessary data, etc. Further, the memory may include high speed random access memory, and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid state storage device. The processor may be the processor 110 in fig. 1.

The embodiment of the present application further provides an electronic device, including the charging circuit 10 in any of the above embodiments and the control device 30, where the control device 30 is electrically connected to a control terminal of the switch control circuit 3, the switch control circuit 3 may be, for example, a MOSFET, and the control device 30 may control the control terminal of the switch control circuit 3 to implement on and off control of the first switching device M1. The specific structure and principle of the charging circuit 10 and the specific control process of the control device 30 are the same as those of the above embodiments, and are not described herein again.

An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored, and when the computer program runs on a computer, the computer is caused to execute the charging control method in any of the above embodiments. The specific process and principle of the method are the same as those of the above embodiments, and are not described herein again.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions described in accordance with the present application are generated, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, digital subscriber line) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk), among others.

In the embodiments of the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, and means that there may be three relationships, for example, a and/or B, and may mean that a exists alone, a and B exist simultaneously, and B exists alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" and similar expressions refer to any combination of these items, including any combination of singular or plural items. For example, at least one of a, b, and c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A charging control method for a charging circuit, the charging circuit comprising:

a charging interface;

the first end of the first voltage converter is electrically connected with the charging interface;

a battery electrically connected to the second end of the first voltage converter;

the first end of the first switching device is electrically connected with the charging interface;

a functional component;

the functional component voltage converter is electrically connected to the second end of the first switching device, the functional component and the battery, and is used for performing voltage reduction conversion on the voltage of the charging interface and outputting the voltage to the battery, and is used for performing voltage boosting conversion on the voltage of the battery and outputting the voltage to the functional component;

the method comprises the following steps:

acquiring charging information corresponding to the charging interface;

when the charging information corresponding to the charging interface meets a preset condition, controlling the first switch device to be switched on, controlling the functional component voltage converter to convert the voltage provided by the charging interface, outputting the voltage to the battery after voltage reduction, and directly outputting the voltage provided by the charging interface to the functional component;

when the charging information corresponding to the charging interface does not meet the preset condition, controlling the first switching device to be cut off;

and after the first switching device is controlled to be switched off, the functional component voltage converter is controlled to convert the voltage provided by the battery, boost the voltage and output the boosted voltage to the functional component.

2. The charge control method according to claim 1,

the charging information is voltage provided by the charging interface;

the acquiring the charging information of the charging interface comprises: acquiring voltage provided by the charging interface;

when the charging information of the charging interface does not meet the preset condition, the process of controlling the first switch device to be turned off comprises the following steps:

when the voltage provided by the charging interface does not meet a preset condition, controlling the first switching device to be cut off;

when the charging information corresponding to the charging interface meets a preset condition, the first switch device is controlled to be switched on, the functional component voltage converter is controlled to convert the voltage provided by the charging interface, the voltage is output to the battery after being reduced, and the process of directly outputting the voltage provided by the charging interface to the functional component comprises the following steps:

and when the voltage provided by the charging interface meets a preset condition, controlling the first switch device to be switched on, controlling the functional component voltage converter to convert the voltage provided by the charging interface, outputting the voltage to the battery after voltage reduction, and directly outputting the voltage provided by the charging interface to the functional component.

3. The charge control method according to claim 2,

the functional component is a flash driver;

before the acquiring of the voltage provided by the charging interface, the method further comprises:

responding to a shooting preview instruction, determining whether the current charging mode is adopted, if so, entering the process of acquiring the voltage provided by the charging interface, and if not, entering the shooting preview mode;

when the voltage provided by the charging interface meets a preset condition, controlling the charging interface to output first power;

after the first switching device is controlled to be switched off, the power output by the charging interface is controlled to be larger than the first power.

4. The charge control method according to claim 2,

before the process of controlling the first switching device to be turned off, the method further includes:

when the voltage provided by the charging interface does not meet a preset condition, acquiring a current value provided by the charging interface;

if the current value reaches a threshold value, entering a first switching process, wherein the first switching process comprises the following steps:

controlling the charging interface to output first power;

after the control of the charging interface to output the first power, controlling the first switching device to be turned off;

after the first switching device is controlled to be turned off, the first power output by the charging interface is controlled to be gradually increased to second power in a first time period, the functional component voltage converter is controlled to perform voltage conversion on the voltage provided by the battery, the voltage is output to the functional component after being boosted, and the second power is larger than the first power;

if the current value does not reach the threshold value, entering a second switching process, wherein the second switching process comprises the following steps:

controlling the charging interface to output the first power;

after the first switching device is controlled to be turned off, the first power output by the charging interface is controlled to be changed into third power in a second time period, the functional component voltage converter is controlled to convert the voltage provided by the battery, the voltage is boosted and then output to the functional component, the second time period is smaller than the first time period, and the third power is larger than the first power.

5. The charge control method according to claim 1,

the charging information is the type of a charger connected with the charging interface;

the acquiring of the charging information of the charging interface includes: acquiring the type of a charger connected with the charging interface;

before the acquiring of the charging information of the charging interface, the method further includes:

in a shooting mode or a shooting preview mode, when the charging interface is connected to a charger, acquiring the type of the charger connected with the charging interface;

when the type of the charger connected with the charging interface does not meet a preset condition, controlling the first switching device to be cut off;

when the type of the charger connected with the charging interface meets a preset condition, the first switch device is controlled to be switched on, the functional component voltage converter is controlled to convert the voltage provided by the charging interface, the voltage is output to the battery after being reduced, and the voltage provided by the charging interface is directly output to the functional component.

6. The charge control method according to claim 5, characterized by further comprising:

when the type of a charger connected with the charging interface meets a preset condition, controlling the charging interface to output first power;

after the first switching device is controlled to be turned off, the charging interface is controlled to output fourth power, and the first power is smaller than the fourth power.

7. The charge control method according to claim 5,

when the type of the charger connected with the charging interface does not meet a preset condition, the process of controlling the first switching device to be turned off comprises the following steps:

when the type of the charger connected with the charging interface does not meet a preset condition and the charging circuit supports charging based on power except the first power output by the current charger, controlling the first switching device to be switched off;

the method further comprises the following steps:

when the type of the charger connected with the charging interface does not meet a preset condition and the charging circuit does not support charging based on power except the first power output by the current charger, the first switching device is controlled to be switched on, the functional component voltage converter is controlled to convert the voltage provided by the charging interface, the voltage is output to the battery after being reduced, the voltage provided by the charging interface is directly output to the functional component, and the charging interface is controlled to output the first power.

8. A control apparatus comprising a processor and a memory, the memory being adapted to store at least one instruction which, when loaded and executed by the processor, is adapted to carry out the method of any one of claims 1 to 7.

9. An electronic device comprising a charging circuit, and the control apparatus according to claim 8;

the charging circuit includes:

a charging interface;

the first end of the first switch device is electrically connected with the charging interface;

a functional component;

the functional component voltage converter is electrically connected to the second end of the first switching device, the functional component and the battery, and is used for performing voltage reduction conversion on the voltage of the charging interface and outputting the voltage to the battery, and is used for performing voltage boost conversion on the voltage of the battery and outputting the voltage to the functional component;

the switch control circuit is connected between a cut-off voltage end and the control end of the first switch device in series and is used for controlling the connection and the cut-off between the control end of the first switch device and the cut-off voltage end.

10. The electronic device of claim 9, wherein the charging circuit further comprises:

the first end of the first voltage converter is electrically connected with the charging interface through the second switching device;

a second voltage converter having a first end electrically connected to the second end of the first switching device and a second end electrically connected to the battery.

11. The electronic device of claim 9, wherein the charging circuit further comprises:

the first end of the first voltage converter is electrically connected with the charging interface through the second switch device;

a first end of the third switching device is electrically connected to the charging interface;

a second voltage converter, a first end of the second voltage converter being electrically connected to the second end of the third switching device, a second end of the second voltage converter being electrically connected to the battery.

12. The electronic device of claim 9,

the functional component is a flash driver or a Near Field Communication (NFC) module.

13. A computer-readable storage medium, characterized in that a computer program is stored therein, which when run on a computer, causes the computer to execute the charging control method according to any one of claims 1 to 7.