CN114678908A

CN114678908A - Voltage conversion circuit, method and electronic equipment

Info

Publication number: CN114678908A
Application number: CN202011550667.0A
Authority: CN
Inventors: 王兴华; 王晓洋; 黄允春
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2022-06-28

Abstract

The application provides a voltage conversion circuit, a voltage conversion method and electronic equipment, relates to the technical field of electronics, and can improve charging power. The voltage conversion circuit comprises a target interface, a battery, an energy storage circuit, a first control assembly and a second control assembly. The target interface is used for being connected with target equipment, the first end of the energy storage circuit is electrically connected with the positive electrode of the battery, the first control assembly is electrically connected with the second end of the energy storage circuit and the negative electrode of the battery, and the second control assembly is electrically connected with the second end of the energy storage circuit and the target interface, so that the battery can be used for carrying out high-power charging on the target equipment connected with the target interface.

Description

Voltage conversion circuit, method and electronic equipment

Technical Field

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

Background

At present, the mobile phone has high power consumption speed and needs frequent charging. For example, two mobile phones are electrically connected through a Universal Serial Bus (USB) Type-C connection line. In the case where both handsets are in otg (on the go) mode, one handset charges the other handset. In OTG mode, the charging power does not exceed 6W. For another example, both the two mobile phones are provided with an element having a wireless charging function, and the two mobile phones realize electric energy transmission by using the element having the wireless charging function. Wherein, the charging power that the component of wireless charging function usually supports does not exceed 5W. That is, the above two methods have problems of "small charging power and slow charging speed".

Disclosure of Invention

The embodiment of the application provides a voltage conversion circuit, a voltage conversion method and electronic equipment, which can improve charging power.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides a first voltage conversion circuit, where the voltage conversion circuit includes: the device comprises a target interface, a battery, an energy storage circuit, a first control assembly and a second control assembly. The target interface is used for connecting target equipment. The first end of the energy storage circuit is electrically connected with the positive electrode of the battery. The first control assembly is electrically connected with the second end of the energy storage circuit and the negative electrode of the battery and used for enabling the battery in the voltage conversion circuit in the charging mode to charge the energy storage circuit in the conducting state so as to enable the energy storage circuit to store the first electric energy or enable the energy storage circuit in the voltage conversion circuit in the charged mode to provide the second electric energy for the battery. The second control assembly is electrically connected with the second end of the energy storage circuit and the target interface and is used for enabling the battery in the voltage conversion circuit in the charging mode to charge the target device through the target interface in the conducting state and enabling the energy storage circuit to provide first electric energy for the target device through the target interface, or enabling the energy storage circuit in the voltage conversion circuit in the charged mode to receive second electric energy from the target device through the target interface and enabling the target device to charge the battery through the target interface and the energy storage circuit.

Therefore, in the charging mode, the battery and the energy storage circuit charge the target equipment together through the target interface, and the effect of boosting is achieved, so that the boosting processing from the battery to the target interface is realized. Under the condition that the output current of the battery is not changed, the output voltage of the target interface is the voltage after the boosting treatment, so that the power provided by the battery to the target equipment is increased, and the charging speed is also improved. Under the charged mode, the voltage provided by the target equipment is distributed on the battery and the energy storage circuit, so that the voltage division effect is achieved, the voltage reduction processing from the target interface to the battery is realized, the charging voltage requirement of the battery is adapted, and the high-power charging is realized.

In one possible design, the voltage conversion circuit further includes a communication control circuit. The communication control circuit is respectively electrically connected with the first control assembly and the second control assembly and used for acquiring the first message and determining the control parameters according to the first message. And if the first message indicates that the voltage conversion circuit is in the charging mode, the control parameter controls the first control assembly and the second control assembly to switch the working state according to the charging mode. And if the first message indicates that the voltage conversion circuit is in the charged mode, the control parameter controls the first control component and the second control component to switch the working state according to the charged mode. Illustratively, the control parameters may include at least one of: pulse Width Modulation (PWM) parameters, charging duration, and charging percentage. The PWM parameters may be, for example, but not limited to, PWM period, PWM duty cycle, etc. The charging duration may refer to a time length for charging the target device with a battery in the voltage conversion circuit when the voltage conversion circuit is in the charging mode. The charging percentage may be a percentage of the remaining power of the battery in the voltage conversion circuit after the battery charges the target device, or a percentage of the target power obtained after the target device is charged.

That is, the communication control circuit controls the operation mode of the voltage conversion circuit by acquiring the first message, such as the operation mode in which the battery charges the target device or the operation mode in which the target device charges the battery, so that the flexibility of controlling the operation mode of the voltage conversion circuit is improved.

In one possible design, the communication control circuit is further electrically connected to the target interface for receiving the first message from the target device through the target interface. Wherein the first message requests the voltage conversion circuit to be in a charging mode. That is, in the case where the communication control circuit receives the first message of the target device, the communication control circuit adjusts the operation mode of the voltage conversion circuit so that the voltage conversion circuit operates in the mode (e.g., the charging mode) indicated by the first message.

In one possible design, the communication control circuit includes a conversion circuit, an application processor, and a transform driver circuit. The conversion circuit is electrically connected with the target interface and is used for receiving a first message from the target equipment through the target interface and determining the electrical parameter according to the first message. The electrical parameter is a charging parameter supported by the target device, such as a charging voltage, a charging current, and the like. The application processor is electrically connected with the conversion circuit and used for receiving the electrical parameters from the conversion circuit and determining the control parameters according to the electrical parameters. The conversion driving circuit is respectively electrically connected with the application processor, the first control assembly and the second control assembly and is used for receiving the control parameters from the application processor and controlling the working states of the first control assembly and the second control assembly according to the control parameters.

That is, the first message may be a message that satisfies different protocol formats, and the conversion circuit may be capable of determining an electrical parameter from the first message to cause the application processor to determine a control parameter based on the electrical parameter to control the operating state of the first control component and the second control component.

In one possible design, the communication control circuit is also electrically connected to the display unit for receiving the first message from the display unit. The voltage conversion circuit further comprises a display unit, so that when a user operates the display unit, the display unit sends a first message to the communication control circuit, the communication control circuit controls the working mode of the voltage conversion circuit, and flexibility of controlling the working mode of the voltage conversion circuit is improved.

In a second aspect, an embodiment of the present application provides a second voltage conversion circuit, including: the device comprises a target interface, a battery, an energy storage circuit, a first control assembly and a second control assembly. The target interface is used for connecting target equipment. The second end of the tank circuit is electrically connected with the target interface. The first control assembly is respectively electrically connected with the first end of the energy storage circuit and the positive electrode of the battery and used for enabling the battery in the voltage conversion circuit in the charging mode to charge the energy storage circuit in the conducting state so as to enable the energy storage circuit to store first electric energy and charge target equipment through the target interface, or enabling the energy storage circuit in the voltage conversion circuit in the charged mode to provide second electric energy for the battery and enabling the target equipment to charge the battery through the target interface and the energy storage circuit. The second control assembly is respectively electrically connected with the first end of the energy storage circuit and the negative electrode of the battery and is used for enabling the energy storage circuit in the voltage conversion circuit in the charging mode to provide first electric energy for the target equipment through the target interface in the conducting state or enabling the energy storage circuit in the voltage conversion circuit in the charged mode to receive second electric energy from the target equipment through the target interface.

Therefore, in the charging mode, the voltage of the battery is distributed on the energy storage circuit and the target equipment, the voltage division effect is achieved, the voltage reduction processing from the battery to the target interface is achieved, and the charging voltage requirement of the target equipment is adapted. Because the circuit structure does not limit the current, the maximum discharge capacity of the battery is taken as the upper limit of the output power, and under the condition that the voltage acting on the target equipment is lower than the voltage of the battery, the output current of the battery is increased, the output power of the voltage conversion circuit can be still improved, and high-power charging is realized. Under the charged mode, the voltage provided by the target equipment and the voltage of the energy storage circuit jointly act on the battery to achieve the effect of boosting, so that the boosting processing from the target interface to the battery is realized, the charging voltage requirement of the battery is adapted, and the high-power charging is realized.

In one possible design, the voltage conversion circuit further includes a communication control circuit. The communication control circuit is respectively electrically connected with the first control assembly and the second control assembly and used for acquiring the first message and determining the control parameters according to the first message. If the first message indicates that the voltage conversion circuit is in the charging mode, the control parameter controls the first control assembly and the second control assembly to switch the working state according to the charging mode; and if the first message indicates that the voltage conversion circuit is in the charged mode, the control parameter controls the first control component and the second control component to switch the working state according to the charged mode.

In one possible design, the communication control circuit is further electrically connected to the target interface for receiving the first message from the target device through the target interface. Wherein the first message requests the voltage conversion circuit to be in a charging mode.

In one possible design, the communication control circuit includes a conversion circuit, an application processor, and a transform driver circuit. The conversion circuit is electrically connected with the target interface and used for receiving a first message from the target equipment through the target interface and determining the electrical parameter according to the first message. Wherein the electrical parameter is a charging parameter supported by the target device. The application processor is electrically connected with the conversion circuit and used for receiving the electrical parameters from the conversion circuit and determining the control parameters according to the electrical parameters. The conversion driving circuit is respectively electrically connected with the application processor, the first control assembly and the second control assembly and is used for receiving the control parameters from the application processor and controlling the working states of the first control assembly and the second control assembly according to the control parameters.

In one possible design, the communication control circuit is also electrically connected to the display unit for receiving the first message from the display unit. The voltage conversion circuit further comprises a display unit.

In a third aspect, an embodiment of the present application provides a first voltage conversion method, which is applied to the first voltage conversion circuit of the first aspect. The voltage conversion circuit includes: the device comprises a target interface, a battery, an energy storage circuit, a first control assembly and a second control assembly. The target interface is used for connecting a target device. In a charging mode of the voltage conversion circuit, the method includes: the battery charges the energy storage circuit in the conducting state of the first control assembly, so that the energy storage circuit stores first electric energy. The first end of the energy storage circuit is electrically connected with the anode of the battery, and the first control assembly is electrically connected with the second end of the energy storage circuit and the cathode of the battery. The energy storage circuit provides first electric energy for the target device through the target interface in the conducting state of the second control assembly, and the battery charges the target device through the energy storage circuit and the target interface in the conducting state of the second control assembly. And the second control component is electrically connected with the second end of the energy storage circuit and the target interface. In a charged mode of the voltage conversion circuit, the method includes: the target device charges the battery through the target interface and the tank circuit in the on state of the second control component, and provides a second amount of electrical energy to the tank circuit through the target interface. The energy storage circuit provides second electric energy for the battery under the conducting state of the first control component.

In one possible design, the voltage conversion method according to the embodiment of the present application further includes: the communication control circuit acquires the first message and determines the control parameter according to the first message. The voltage conversion circuit further comprises a communication control circuit, and the communication control circuit is electrically connected with the first control assembly and the second control assembly respectively. And if the first message indicates that the voltage conversion circuit is in the charging mode, the control parameter controls the first control assembly and the second control assembly to switch the working state according to the charging mode. And if the first message indicates that the voltage conversion circuit is in the charged mode, the control parameter controls the first control component and the second control component to switch the working state according to the charged mode.

In one possible design, the communication control circuitry obtains the first message, including: the communication control circuit receives a first message from the target device through the target interface. The communication control circuit is further electrically connected with the target interface, and the first message requests the voltage conversion circuit to be in a charging mode.

In one possible design, the communication control circuitry receives a first message from the target device via the target interface, including: the translation circuit receives a first message from the target device via the target interface. The communication control circuit comprises a conversion circuit, and the conversion circuit is electrically connected with the target interface. The communication control circuit determines a control parameter from the first message, including: the conversion circuit determines an electrical parameter from the first message. Wherein the electrical parameter is a charging parameter supported by the target device. The application processor receives the electrical parameter from the conversion circuit and determines a control parameter based on the electrical parameter. The communication control circuit further comprises an application processor, and the application processor is electrically connected with the conversion circuit. The conversion driving circuit receives the control parameters from the application processor and controls the working states of the first control assembly and the second control assembly according to the control parameters. The communication control circuit further comprises a conversion driving circuit, and the conversion driving circuit is electrically connected with the application processor, the first control assembly and the second control assembly respectively.

In one possible design, the application processor determines the control parameter based on the electrical parameter, including: the application processor determines a control parameter based on the electrical parameter and the reference factor. Wherein the reference factor comprises at least one of: a current charge level of the battery, a target charge level of the battery, a current charge level of the target device, or a target charge level of the target device.

In one possible design, the communication control circuitry obtains the first message, including: the communication control circuit receives a first message from the display unit. The voltage conversion circuit further comprises a display unit, and the communication control circuit is further electrically connected with the display unit.

In a fourth aspect, an embodiment of the present application provides a second voltage converting method, which is applied to the second voltage converting circuit of the second aspect. The voltage conversion circuit includes: the device comprises a target interface, a battery, an energy storage circuit, a first control assembly and a second control assembly. The target interface is used for connecting a target device. In a charging mode of the voltage conversion circuit, the method includes: the battery charges the tank circuit in the on state of the first control assembly to cause the tank circuit to store the first amount of electrical energy and to charge the target device through the target interface. The second end of the energy storage circuit is electrically connected with the target interface, and the first control assembly is electrically connected with the first end of the energy storage circuit and the anode of the battery. The tank circuit provides a first amount of electrical energy to the target device through the target interface in the conductive state of the second control component. The second control assembly is electrically connected with the first end of the energy storage circuit and the negative electrode of the battery. In a charged mode of the voltage conversion circuit, the method includes: the target device charges the energy storage circuit through the target interface in the conducting state of the second control assembly, so that the energy storage circuit stores second electric energy. The tank circuit provides a second amount of electrical energy to the battery in the on state of the first control component, and the target device charges the battery through the target interface and the tank circuit in the on state of the first control component.

In one possible design, the voltage conversion method according to the embodiment of the present application further includes: the communication control circuit acquires the first message and determines the control parameter according to the first message. The voltage conversion circuit further comprises a communication control circuit, and the communication control circuit is electrically connected with the first control assembly and the second control assembly respectively. And if the first message indicates that the voltage conversion circuit is in the charging mode, the control parameter controls the first control assembly and the second control assembly to switch the working state according to the charging mode. If the first message indicates that the voltage conversion circuit is in the charged mode, the control parameter controls the first control assembly and the second control assembly to switch the working state according to the charged mode.

In a fifth aspect, embodiments of the present application provide an electronic device, which includes the voltage conversion circuit in the first aspect or any one of the possible designs of the first aspect, or includes the voltage conversion circuit in the second aspect or any one of the possible designs of the second aspect.

The technical effects brought by any design of the third aspect to the fifth aspect can refer to the beneficial effects in the corresponding methods provided above, and are not described herein again.

Drawings

Fig. 1a is a schematic structural diagram of an interface according to an embodiment of the present application;

FIG. 1b is a schematic diagram of a charging state according to an embodiment of the present application;

FIG. 2 is a schematic diagram of another charging state according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a first voltage conversion circuit according to an embodiment of the present application;

FIG. 4a is a schematic diagram of another state of charge according to an embodiment of the present application;

FIG. 4b is a schematic diagram of another state of charge according to an embodiment of the present application;

FIG. 4c is a schematic diagram of another state of charge according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a second voltage conversion circuit according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another state of charge according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a second voltage conversion circuit according to an embodiment of the present application;

FIG. 8 is a schematic diagram of yet another state of charge according to an embodiment of the present application;

FIG. 9a is a flowchart of a first voltage conversion method in a charging mode according to an embodiment of the present disclosure;

FIG. 9b is a flowchart illustrating a first voltage conversion method in a charged mode according to an embodiment of the present disclosure;

FIG. 10 is a flowchart of a method for controlling the operational mode according to an embodiment of the present application;

FIG. 11a is a flowchart of another method for controlling the operation mode according to an embodiment of the present application;

FIG. 11b is a flowchart of another method for controlling the operation mode according to the embodiment of the present application;

FIG. 12 is a schematic illustration of a user interface according to an embodiment of the present application;

FIG. 13 is a flowchart of another method for controlling an operating mode according to an embodiment of the present application;

FIG. 14a is a flowchart illustrating a second voltage conversion method in a charging mode according to an embodiment of the present disclosure;

FIG. 14b is a flowchart illustrating a second voltage converting method according to an embodiment of the present disclosure in a charging mode;

fig. 15 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments.

Where in the description of the present application, "/" indicates an OR meaning, for example, A/B may indicate A or B, unless otherwise indicated. "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In the description of the present application, "a plurality" means two or more.

In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

Further, in the present application, directional terms such as "upper," "lower," "left," "right," "horizontal" and "vertical" are defined with respect to the schematically-disposed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts that are used for descriptive and clarity purposes and that will vary accordingly depending on the orientation in which the components are disposed in the drawings.

In the embodiments of the present application, the words "exemplary" or "such as" are used herein to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In order to make the present application clearer, a brief description of some concepts and process flows mentioned in the present application will be given first.

1. Universal Serial Bus (USB) Type-C interface

The USB Type-C interface is one Type of USB interface. The USB Type-C interface has the following characteristics: the power supply device supports large-current and large-voltage charging, supports bidirectional power supply, has strong expansion capability and supports front and back blind plugging.

As shown in FIG. 1a, the pins in the USB Type-C interface can be introduced, for example, but not limited to: bus power (VBUS), Ground (GND), CC (configuration channel)1, CC2, data line positive (DP), and data line negative (DM). In the case where two electronic devices (e.g., the electronic device 1 and the electronic device 2) are connected via the VBUS pin and the GND pin, one electronic device may charge the other electronic device, as shown in fig. 1 b. Further, in the case that two electronic devices are also connected through the CC1 pin and the CC2 pin (not shown in fig. 1 b), the charging interaction protocol between the two electronic devices may be a USB Power Delivery (PD) protocol. In the case that two electronic devices are also connected through a DP pin and a DM pin, as shown in fig. 1b, the charging interaction protocol between the two electronic devices may be a Smart Charging Protocol (SCP).

It should be noted that, in the case of connecting two electronic devices through the VBUS pin and the GND pin, the two electronic devices are in the otg (on the go) mode. There is a voltage conversion circuit between the battery of the electronic device and the USB Type-C interface, which supports a current of about 1.2A and a voltage of about 5V. As such, the charging power between the electronic devices does not exceed 6W.

2. Wireless charging technology (Wireless charging technology)

Wireless charging technology is a technology for transferring energy between two electronic devices by using a magnetic field. The two electronic devices can transmit energy without connecting wires.

In the case where both electronic apparatuses are provided with elements for the wireless charging function, both electronic apparatuses (e.g., the electronic apparatus 1 and the electronic apparatus 2) realize the electric energy transfer using the elements for the wireless charging function, as shown in fig. 2. Wherein one electronic device (e.g., electronic device 1) acts as a transmitter and the other electronic device (e.g., electronic device 2) acts as a receiver to enable the transfer of electrical energy. Due to the circuit configuration limitation of the element of the wireless charging function, the charging power between the electronic devices does not exceed 5W in general.

In summary, the two methods have the problems of low charging power and low charging speed.

In view of this, embodiments of the present disclosure provide a first voltage conversion circuit, which can increase charging power and charging speed. Referring to fig. 3, the first voltage conversion circuit includes a target interface 31, a battery 32, a tank circuit 33, a first control component 34, and a second control component 35.

First, each part of the first voltage conversion circuit will be described:

the target interface is used for connecting a target device. For example, the target interface may be a USB Type-C interface, as shown in fig. 4a, the target interface may also be another Type of interface with bidirectional power supply, and this is not limited in this embodiment of the present application. Since the target interface is capable of bi-directional power supply, the voltage conversion circuit can charge both the target device and the battery. Here, "charging the target device" means that the electric energy of the battery in the voltage conversion circuit is supplied to the target device, and "charging the battery" means that the electric energy of the target device is supplied to the battery in the voltage conversion circuit.

The first end of the energy storage circuit is electrically connected with the positive electrode of the battery, so that electric energy can be transmitted between the energy storage circuit and the battery. Illustratively, the tank circuit may be implemented as an inductor, as shown at L1 in fig. 4 a.

The first control assembly is respectively and electrically connected with the second end of the energy storage circuit and the negative electrode of the battery. Illustratively, the first control component may be implemented as a Field Effect Transistor (FET). Wherein the FET may be a metal-oxide-semiconductor field-effect transistor (MOSFET), as shown in fig. 4a as Q3. The first control element may also be another controllable switching element, which is not limited in the embodiments of the present application. Further, in the case that the first control component is implemented as a MOSFET, the number of the MOSFET may be one, or may be two or more, and this is not limited in the embodiment of the present application.

The second control assembly is electrically connected with the second end of the energy storage circuit and the target interface respectively. Illustratively, the second control component may be implemented as a FET. Wherein the FET may be a MOSFET, as shown by Q4 in fig. 4 a. The second control element may also be another controllable switching element, which is not limited in the embodiments of the present application. Further, in the case that the second control component is implemented as a MOSFET, the number of the MOSFET may be one, or may be two or more, and this is not limited in the embodiment of the present application.

It should be noted that the first control component and the second control component can be implemented with the same circuit structure, as shown in fig. 4a, and both the first control component and the second control component are implemented with MOSFETs. The first control component and the second control component may also be implemented as different circuit structures, which are not shown in fig. 4a, and the implementation form of the first control component and the second control component is not limited in this embodiment of the application.

Then, the operation of the first voltage conversion circuit is described as follows:

in the first case: when the voltage conversion circuit is in a charging mode (i.e., a battery in the voltage conversion circuit charges a target device), first, the first control component is in an on state (or a closed state), the second control component is in an off state (or an open state), and the battery charges the energy storage circuit, so that the energy storage circuit stores the first electric energy. Then, the first control assembly is in a cut-off state (or a cut-off state), the second control assembly is in a conducting state (or a closed state), under the condition that the target interface is connected with the target device, the energy storage circuit provides first electric energy for the target device through the target interface, and the battery charges the target device through the energy storage circuit and the target interface. In this way, the voltage of the battery and the voltage of the energy storage circuit jointly act on the target interface, so that the boosting processing from the battery to the target interface is realized.

In the second case: when the voltage conversion circuit is in a charged mode (that is, the target device charges a battery in the voltage conversion circuit), first, the first control component is in an off state (or an open state), the second control component is in an on state (or a closed state), and when the target interface is connected to the target device, the target device charges the energy storage circuit and the battery through the target interface, in which case, the electric energy stored by the energy storage circuit is recorded as the second electric energy. Because the voltage of the target equipment acts on the energy storage circuit and the battery at the same time, the voltage division effect is achieved, and therefore the voltage acting on the battery is smaller than the voltage at the target interface (namely the voltage output by the target equipment) so as to realize the voltage reduction treatment from the target interface to the battery. The first control assembly is then in an on state (or closed state) and the second control assembly is in an off state (or open state), and the tank circuit provides said second amount of electrical energy to the battery. The voltage of the tank circuit is lower than that of the target device, and the voltage reduction processing from the target interface to the battery can be realized.

Exemplarily, in a case where the electronic device a1 includes the above-described first voltage conversion circuit, the electronic device a1 is used as a source device, and the description is given in three examples:

for example one, referring to fig. 4a, the target device is implemented as electronic device a2, and electronic device a1 charges electronic device a 2. The electronic device a2 includes the above-described first voltage conversion circuit. Wherein the voltage range of the battery is 3.8V-4.45V. The voltage of the target interface may be one of: 5V, 9V, 12V, 15V, or 20V. The voltage conversion circuit in the electronic device a1 operates in the above charging mode, so that the voltage of the battery is boosted to one of 5V, 9V, 12V, 15V, or 20V, which can both boost the charging power and adapt to different charging voltage requirements. The voltage conversion circuit in the electronic device a2 is in the charged mode described above to step down the voltage of the target interface to the voltage of the battery to adapt to the charging requirement of the battery, thereby implementing the function of charging the battery.

Example two, referring to fig. 4b, the target device is implemented as electronic device A3, and electronic device a1 charges electronic device A3. The circuit structure between the USB Type-C interface and the battery B2 in the electronic device a3 is shown in fig. 4B. The charging voltage supported by electronic device a3 is slightly higher than the voltage of battery B2. As one possible example, the charging voltage supported by the electronic device a3 is around 5V. The voltage conversion circuit in the electronic device a1 operates in the charging mode, so that the voltage of the battery is boosted to 5V, and the upper limit of the discharging capability of the battery B1 is used as a limit, thereby increasing the charging power, and realizing rapid charging of the electronic device A3. For electronic device A3, during charging, Q5 is always on, so that the electrical energy provided by electronic device a1 is transferred to battery B2.

Example three, referring to fig. 4c, the target device is implemented as electronic device a4, and electronic device a1 charges electronic device a 4. The electronic device a4 includes a direct charging circuit structure with cells connected in series, as shown in fig. 4 c. The charging voltage supported by electronic device a4 is slightly higher than the sum of the voltages of battery B2 and battery B3. As one possible example, the charging voltage supported by the electronic device a4 is around 9V. The voltage conversion circuit in the electronic device a1 operates in the charging mode described above, so that the voltage of the battery is boosted to about 9V, and the upper limit of the discharging capability of the battery B1 is used as a limit, so as to increase the charging power, and thus, the quick charging of the battery B2 and the battery B3 in the electronic device a4 is realized. For electronic device a4, during charging, Q5 is always on, so that the electric energy provided by electronic device a1 is transferred to battery B2 and battery B3.

The target device may be realized as an electronic device including a step-down dc converter circuit, and the electronic device including the step-down dc converter circuit usually supports a charging voltage of about 9V. Electronic device a1 also supports charging an electronic device that includes a buck-type dc conversion circuit. In this case, the electronic device a1 is in the charging mode to achieve high power charging. Conversely, the electronic device including the buck dc converter circuit can also charge the electronic device a1, in which case the electronic device a1 is in a charged mode to meet the charging requirement of the battery. The target device can also be realized as an OTG device, and the output voltage of the electronic device a1 is 5V to charge the OTG device.

The operating states (such as the on state and the off state) of the first control unit and the second control unit are controlled by control parameters. For example, the control parameters may include at least one of: pulse Width Modulation (PWM) parameters, charging duration, and charging percentage. The PWM parameters may be, for example, but not limited to, PWM period, PWM duty cycle, etc. The charging duration may refer to a time length for charging the target device with a battery in the voltage conversion circuit when the voltage conversion circuit is in the charging mode. The charging percentage may be a percentage of the remaining power of the battery in the voltage conversion circuit after the battery charges the target device, or a percentage of the target power obtained after the target device is charged. In this way, the control parameter controls at which time the first control element (or the second control element) is in the on state and at which time the first control element is switched to the off state, so as to implement the step-up process or the step-down process.

The first voltage conversion circuit provided by the embodiment of the application adopts the energy storage circuit to be connected with the battery, and then the energy storage circuit is controlled by the first control assembly and the second control assembly, so that the battery, the energy storage circuit and the target device form a closed loop. In the charging mode, the battery and the energy storage circuit charge the target equipment together through the target interface, so that the boosting effect is achieved, and the boosting treatment from the battery to the target interface is realized. Under the condition that the output current of the battery is not changed, the output voltage of the target interface is the voltage after the boosting treatment, so that the power provided by the battery to the target equipment is increased, and the charging speed is also improved. Under the charged mode, the voltage provided by the target equipment is distributed on the battery and the energy storage circuit, so that the voltage division effect is achieved, the voltage reduction processing from the target interface to the battery is realized, the charging voltage requirement of the battery is adapted, and the high-power charging is realized. Because the battery in the voltage conversion circuit can be used as an element for providing energy and can also be used as an element for receiving energy, the electronic equipment comprising the voltage conversion circuit can be used as charging equipment and equipment to be charged, and the flexibility of equipment charging is improved.

In some embodiments, the voltage conversion circuit further comprises a communication control circuit. The communication control circuit is electrically connected with the first control assembly and the second control assembly respectively, as shown in fig. 3. The communication control circuit is capable of obtaining a first message and determining a control parameter based on the first message. And if the first message indicates that the voltage conversion circuit is in the charging mode, the control parameter controls the first control assembly and the second control assembly to switch the working state according to the charging mode. And if the first message indicates that the voltage conversion circuit is in the charged mode, the control parameter controls the first control component and the second control component to switch the working state according to the charged mode. The working parameters of the first control assembly in the charging mode are different from the working parameters of the first control assembly in the charged mode, and the working parameters of the second control assembly in the charging mode are different from the working parameters of the second control assembly in the charged mode. Therefore, the control parameter is a parameter determined based on the operation mode of the voltage conversion circuit.

In this way, the communication control circuit controls the operating mode of the voltage converting circuit by obtaining the first message, such as the operating mode in which the battery charges the target device or the operating mode in which the target device charges the battery, so as to flexibly adjust the operating mode of the voltage converting circuit.

Further, in the case where the communication control circuit is electrically connected to different elements, the communication control circuit may acquire the first message in different manners. In the following, two examples are given:

in an example one, the communication control circuit is electrically connected to the target interface, as shown in fig. 3. In this case, the target device sends a first message to the communication control circuit through the target interface. Accordingly, the communication control circuit receives a first message from the target device via the target interface. Wherein the first message may be implemented as a request message, i.e. requesting the battery to charge the target device. In other words, the first message requests that the voltage conversion circuit be in a charging mode to cause the voltage conversion circuit to charge the target device. The request message may carry charging parameters supported by the target device, such as charging voltage, charging current, and the like.

Illustratively, referring to fig. 4a, the circuit structure of the communication control circuit is as follows: the communication control circuit includes a conversion circuit, an Application Processor (AP), and a conversion drive circuit. The conversion circuit is electrically connected with the target interface, the AP is electrically connected with the conversion circuit, and the conversion driving circuit is electrically connected with the AP, the first control assembly and the second control assembly respectively. The first message satisfies at least one of the following protocols: USB PD protocol, or SCP protocol. The working process of the communication control circuit is as follows:

first, the target device sends a first message to the translation circuit through the target interface. Accordingly, the translation circuit receives a first message from the target device via the target interface. For the related description of the first message, reference may be made to the related description of "example one," and details are not described here. For example, where the translation circuit supports the USB PD protocol, the target device sends a first message to the translation circuit through pin CC1 and pin CC2 in the target interface. Accordingly, the translation circuit receives the first message from the target device through pin CC1 and pin CC2 in the target interface. As another example, where the translation circuit supports the SCP protocol, the target device sends a first message to the translation circuit through pin DP and pin DM in the target interface. Accordingly, the translation circuit receives the first message from the target device via pin DP and pin DM in the target interface.

Next, the conversion circuit determines an electrical parameter from the first message. The electrical parameter may be a charging parameter supported by the target device, such as a charging voltage, a charging current, a charging power, and the like. For example, where the translation circuit supports the USB PD protocol, the translation circuit decodes the first message in the USB PD protocol format to obtain the electrical parameter. For another example, where the conversion circuit supports the SCP protocol, the conversion circuit decodes the first message in the SCP protocol format to obtain the electrical parameter.

Again, the switching circuit sends the electrical parameters to the AP. Accordingly, the AP receives the electrical parameter from the switching circuit and determines the control parameter based on the electrical parameter. For the introduction of the control parameters, reference may be made to the above-mentioned related descriptions, which are not described herein again. Illustratively, where the conversion circuit is electrically connected to the AP via an inter-integrated circuit (I2C) bus, the conversion circuit sends the electrical parameters to the AP via the I2C bus. Accordingly, the AP receives the electrical parameter from the conversion circuit via the I2C bus.

Finally, the AP sends control parameters to the transform driver circuit. Correspondingly, the conversion driving circuit receives the control parameters from the AP and controls the working states of the first control assembly and the second control assembly according to the control parameters. Wherein the working state comprises at least one of: the length of time in the on state, the moment of switching between the on state and the off state.

That is, in the case where the communication control circuit receives the first message of the target device, the communication control circuit adjusts the operation mode of the voltage conversion circuit so that the voltage conversion circuit operates in the mode (e.g., the charging mode) indicated by the first message.

Example two, in the case where the voltage conversion circuit further includes a display unit, the communication control circuit is further electrically connected to the display unit, as shown in fig. 3. In this case, the user may input the first message through the display unit. The communication control circuit receives a first message from the display unit. If the first message indicates that the voltage conversion circuit is in the charging mode, the communication control circuit adjusts the working mode of the voltage conversion circuit after receiving the first message from the display unit so as to charge the battery for the target device. If the first message indicates that the voltage conversion circuit is in the charged mode, the communication control circuit adjusts the working mode of the voltage conversion circuit after receiving the first message from the display unit so as to charge the target device for the battery, thereby flexibly controlling the charging and discharging processes of the voltage conversion circuit. In the case that the communication control circuit includes the AP and the conversion driving circuit, the connection relationship between the AP and the conversion driving circuit, and the connection relationship between the conversion driving circuit and the first control component and the second control component may refer to the above description of "example one", and will not be described herein again. In this case, the display unit is electrically connected to the AP so that the first message is transmitted to the AP, and the AP determines the control parameter according to the first message. For example, the AP determines the control parameter according to the operation mode (such as the charging mode or the charged mode) indicated by the first message. The AP sends the control parameter to the conversion driving circuit, and then the conversion driving circuit controls the working states of the first control component and the second control component, which is specifically referred to the related description of "example one", and is not described here again.

The embodiment of the application provides a second voltage conversion circuit, which can improve charging power and charging speed. Referring to fig. 5, the voltage conversion circuit includes a target interface 51, a battery 52, a tank circuit 53, a first control component 54, and a second control component 55.

First, each part of the circuit in the second voltage conversion circuit is described:

the target interface is used for connecting a target device, and reference may be made to the introduction of the "target interface" in the first voltage conversion circuit, which is not described herein again.

The second end of the energy storage circuit is electrically connected with the target interface, so that electric energy can be transmitted between the energy storage circuit and a target device connected with the target interface. Illustratively, the tank circuit may be implemented as an inductor, as shown at L1 in fig. 6.

The first control assembly is respectively and electrically connected with the first end of the energy storage circuit and the positive electrode of the battery. For specific implementation of the first control component, reference may be made to the introduction of "the first control component" in the first voltage conversion circuit, and details are not described here. Illustratively, the first control component may be Q1 in fig. 6.

The second control assembly is respectively electrically connected with the first end of the energy storage circuit and the negative electrode of the battery. For specific implementation of the second control component, reference may be made to the introduction of "the second control component" in the first voltage conversion circuit, and details are not described here. Illustratively, the second control component may be Q2 in fig. 6.

Then, the operation process of the second voltage conversion circuit is described:

in the first case: when the voltage conversion circuit is in a charging mode, firstly, the first control assembly is in a conducting state (or a closed state), the second control assembly is in a stopping state (or an open state), and when the target interface is connected with the target device, the battery respectively charges the energy storage circuit and the target device, and in this case, the electric energy stored by the energy storage circuit is recorded as first electric energy. The battery also charges the target device through the target interface. Under the condition that the battery, the energy storage circuit and the target equipment form a closed loop, the voltage of the battery is distributed on the energy storage circuit and the target equipment, so that the voltage division effect is achieved, and the voltage reduction treatment from the battery to the target interface is realized. The first control assembly is then in an off state (or open state) and the second control assembly is in an on state (or closed state), and the tank circuit provides the first amount of electrical energy to the target device via the target interface. Since the voltage of the tank circuit is lower than the voltage of the battery, the voltage reduction process from the battery to the target interface direction can also be realized.

In the second case: when the voltage conversion circuit is in a charged mode, firstly, the first control assembly is in an off state (or an off state), the second control assembly is in an on state (or a closed state), and when the target interface is connected with the target device, the target device charges the energy storage circuit through the target interface so that the energy storage circuit stores second electric energy. Then, the first control assembly is in a conducting state (or a closed state), the second control assembly is in a stopping state (or an open state), and the energy storage circuit and the target device are both charged by the battery, and in this case, the energy storage circuit provides a second amount of electric energy to the battery. Under the condition that the battery, the energy storage circuit and the target device form a closed loop, the voltage of the target device and the voltage of the energy storage circuit are both acted on the battery, and therefore the voltage acted on the battery is larger than the voltage of the target device, and the voltage boosting treatment from the target interface to the battery is achieved.

For example, in a case where the electronic device B1 includes the second voltage conversion circuit, the electronic device B1 is used as a source device, and the following description is made:

referring to fig. 6, the target device is implemented as electronic device B2, and electronic device B1 charges electronic device B2. The electronic device B2 includes the above-described second voltage conversion circuit. Wherein the voltage of the battery is higher than the charging voltage of the target device connected to the target interface. For example, the voltage range of the battery is 3.8V to 4.45V. The voltage of the target interface may be one of the following voltage ranges: 3.3V to 5V. The voltage conversion circuit in the electronic device B1 works in the charging mode to reduce the voltage of the battery to one of 3.8V to 4.45V, which can not only increase the charging power, but also adapt to different charging voltage requirements. The voltage conversion circuit in the electronic device B2 is in the charged mode described above to boost the voltage of the target interface to the voltage of the battery to adapt to the charging requirement of the battery, thereby implementing the function of charging the battery.

The second voltage conversion circuit provided by the embodiment of the application adopts the energy storage circuit to be connected with the target interface, and then the energy storage circuit is controlled by the first control assembly and the second control assembly, so that the battery, the energy storage circuit and the target equipment connected with the target interface form a closed loop. Under the charging mode, the voltage of the battery is distributed on the energy storage circuit and the target equipment, so that the voltage division effect is achieved, the voltage reduction processing from the battery to the target interface is realized, and the charging voltage requirement of the target equipment is adapted. Because the circuit structure does not limit the current, the maximum discharge capacity of the battery is taken as the upper limit of the output power, and under the condition that the voltage acting on the target equipment is lower than the voltage of the battery, the output current of the battery is increased, the output power of the voltage conversion circuit can be still improved, and high-power charging is realized. Under the charged mode, the voltage provided by the target equipment and the voltage of the energy storage circuit jointly act on the battery to achieve the effect of boosting, so that the boosting processing from the target interface to the battery is realized, the charging voltage requirement of the battery is adapted, and the high-power charging is realized. Because the battery in the voltage conversion circuit can be used as an element for providing energy and can also be used as an element for receiving energy, the electronic equipment comprising the voltage conversion circuit can be used as charging equipment and also can be used as equipment to be charged, and the flexibility of equipment charging is improved.

In some embodiments, the second voltage converting circuit may also include a communication control circuit, as shown in fig. 5, for a specific description, reference may be made to a related description of a "communication control circuit" portion in the first voltage converting circuit, and details are not described here.

In some embodiments, the second voltage converting circuit may also include a display unit, as shown in fig. 5, for a specific description, reference may be made to a related description of a "display unit" portion in the first voltage converting circuit, which is not described herein again.

The embodiment of the application provides a third voltage conversion circuit, which can improve charging power and charging speed. Referring to fig. 7, the voltage conversion circuit includes a target interface 71, a battery 72, a tank circuit 73, a first control component 74, a second control component 75, a third control component 76, and a fourth control component 77.

First, each part of the third voltage conversion circuit will be described:

The first end of the energy storage circuit is electrically connected with the positive electrode of the battery through the third control assembly, so that the energy storage circuit and the battery can transmit electric energy in the state that the third control assembly is conducted. For example, the energy storage circuit may be implemented as an inductor, as shown by L1 in fig. 8, and the specific implementation of the third control component may refer to the description of "the first control component" in the first voltage conversion circuit, which is not described herein again. The third control component may be Q1 in fig. 8.

The first end of the energy storage circuit is also electrically connected with the cathode of the battery through a fourth control assembly. For an exemplary implementation of the fourth control component, reference may be made to the description of "the first control component" in the first voltage conversion circuit, and details are not described here. The fourth control component may be Q2 in fig. 8.

The first control assembly is respectively electrically connected with the second end of the energy storage circuit and the cathode of the battery. For example, the specific implementation of the first control component may refer to the introduction of "the first control component" in the first voltage conversion circuit, and details thereof are not described herein. The first control component may be Q3 in fig. 8.

The second control assembly is electrically connected with the second end of the energy storage circuit and the target interface respectively. For example, the specific implementation of the second control component may refer to the introduction of "the second control component" in the first voltage conversion circuit, and details thereof are not described herein. The second control component may be Q4 in fig. 8.

Then, the operation of the third voltage conversion circuit is described as follows:

in the first case: if the third voltage converting circuit is in the charging mode when the third control element (e.g., Q1 in fig. 8) is in the closed state and the fourth control element (e.g., Q2 in fig. 8) is in the open state, the details of the "first case" in the first voltage converting circuit are described, and the details are not repeated here.

In the second case: if the third voltage converting circuit is in the charged mode when the third control element (e.g., Q1 in fig. 8) is in the closed state and the fourth control element (e.g., Q2 in fig. 8) is in the open state, the details of the "second case" in the first voltage converting circuit will be described, and the details will not be repeated here.

In the third case: if the third voltage converting circuit is in the charging mode when the second control element (e.g., Q4 in fig. 8) is in the closed state and the first control element (e.g., Q3 in fig. 8) is in the open state, the details of the "first case" in the second voltage converting circuit will be described, and the details will not be repeated here.

In a fourth case: if the third voltage converting circuit is in the charged mode when the second control element (e.g., Q4 in fig. 8) is in the closed state and the first control element (e.g., Q3 in fig. 8) is in the open state, the details of the "second case" in the second voltage converting circuit will be described, and the details will not be repeated here.

The third voltage conversion circuit provided by the embodiment of the application adopts the energy storage circuit to be respectively connected with the battery and the target interface, and then controls the energy storage circuit through the first control assembly, the second control assembly, the third control assembly and the fourth control assembly, so that the battery, the energy storage circuit and the target equipment form a closed loop. When the second control component is in a closed state and the first control component is in an open state, the working process of the third voltage conversion circuit can refer to the working process of the first voltage conversion circuit, so as to realize the voltage boosting processing from the battery to the target interface and the voltage reducing processing from the target interface to the battery, thereby realizing high-power charging. When the fourth control component is in an open state and the third control component is in a closed state, the working process of the third voltage conversion circuit can be referred to the working process of the second voltage conversion circuit to realize voltage reduction processing from the battery to the target interface and voltage boosting processing from the target interface to the battery, so that high-power charging is realized.

In some embodiments, the third voltage converting circuit may also include a communication control circuit, as shown in fig. 7, for a specific description, reference may be made to a related description of a "communication control circuit" portion in the first voltage converting circuit, and details are not described here. The difference from the first voltage conversion circuit is that the conversion driving circuit is electrically connected with the first control assembly, the second control assembly, the third control assembly and the fourth control assembly respectively.

In some embodiments, the third voltage conversion circuit may also include a display unit, as shown in fig. 7, for a specific description, reference may be made to a related description of a "display unit" portion in the first voltage conversion circuit, which is not described herein again.

It should be noted that, components (such as the first control component, the second control component, the third control component, the fourth control component, the tank circuit, the communication control circuit, or the battery) referred in this embodiment of the present application may be discrete devices, or may be implemented by using an integrated chip, which is not limited in this embodiment of the present application.

The embodiment of the present application provides a first voltage conversion method, which is applied to the first voltage conversion circuit, and can improve charging power and charging speed. In the charging mode of the voltage conversion circuit, see fig. 9a, the method comprises:

s901a, when the first control component is turned on and the second control component is turned off, the battery charges the energy storage circuit, so that the energy storage circuit stores the first amount of electric energy.

For example, referring to fig. 4a, the first control component may be Q3, the second control component may be Q4, the battery may be B1, and the tank circuit may be L1. When Q3 is on and Q4 is off, battery B1 and inductor L1 form a closed loop, and battery B1 charges inductor L1, so that inductor L1 stores electric energy, which may be referred to as a first electric energy.

And S902a, when the first control assembly is turned off and the second control assembly is turned on, the energy storage circuit provides first electric energy for the target device through the target interface, and the battery charges the target device through the energy storage circuit and the target interface.

For example, also taking fig. 4a as an example, when Q3 is turned off and Q4 is turned on, if the target interface is connected to the target device, battery B1, inductor L1 and the target device form a closed loop, and battery B1 and inductor L1 are used together to charge the target device so that the voltage applied to the target device is higher than the voltage of battery B1, thereby implementing the boosting process. When the discharge current of battery B1 is constant, the higher the voltage applied to the target device, the higher the charging power of the target device, and the higher the charging power and the charging speed.

In the charged mode of the voltage conversion circuit, see fig. 9b, the method comprises:

and S901b, in the state that the first control component is turned off and the second control component is turned on, the target device charges the energy storage circuit and the battery through the target interface respectively.

In this case, the amount of electric energy stored in the tank circuit is regarded as the second amount of electric energy.

Illustratively, still taking fig. 4a as an example, in the case where Q3 is turned off and Q4 is turned on, battery B1, inductor L1 and the target device form a closed loop, and the target device charges battery B1 and inductor L1. Since the battery B1 and the inductor L1 are connected in series, the battery B1 and the inductor L1 achieve the voltage division effect, so that the voltage applied to the battery is smaller than the voltage of the target device, thereby implementing the voltage reduction process to adapt to the charging requirement of the battery. The stored electric energy of the inductor L1 can be recorded as the second electric energy.

And S902b, under the condition that the first control component is turned on and the second control component is turned off, the energy storage circuit provides second electric energy for the battery.

Illustratively, still taking fig. 4a as an example, when Q3 is turned on and Q4 is turned off, battery B1 and inductor L1 form a closed loop, and inductor L1 charges battery B1, so that the second amount of electric energy stored in inductor L1 is transmitted to the battery. The inductor can generate an instantaneous voltage at the moment when the Q3 is turned on, and the instantaneous voltage is the same as the voltage in S901b, so as to continue charging the battery.

In the first voltage conversion method provided in the embodiment of the present application, in the charging mode, the battery and the energy storage circuit charge the target device through the target interface together, so as to achieve the effect of boosting voltage, and implement the voltage boosting processing from the battery to the target interface. Under the condition that the output current of the battery is not changed, the output voltage of the target interface is the voltage after the boosting treatment, so that the power provided by the battery to the target equipment is increased, and the charging speed is also improved. Under the charged mode, the voltage provided by the target equipment is distributed on the battery and the energy storage circuit, so that the voltage division effect is achieved, the voltage reduction processing from the target interface to the battery is realized, the charging voltage requirement of the battery is adapted, and the high-power charging is realized. Because the battery in the voltage conversion circuit can be used as an element for providing energy and can also be used as an element for receiving energy, the electronic equipment comprising the voltage conversion circuit can be used as charging equipment and equipment to be charged, and the flexibility of equipment charging is improved.

In some embodiments, referring to fig. 10, the first voltage conversion method provided in the embodiments of the present application further includes S1001 and S1002:

s1001, the communication control circuit acquires a first message.

Wherein the first message indicates that the voltage conversion circuit is in the charging mode or indicates that the voltage conversion circuit is in the charged mode. For a specific implementation of the communication control circuit, reference may be made to a specific implementation of a "communication control circuit" in the first voltage conversion circuit, and details are not described here.

S1002, the communication control circuit determines a control parameter according to the first message.

And if the first message indicates that the voltage conversion circuit is in the charging mode, the control parameter controls the first control assembly and the second control assembly to switch the working state according to the charging mode. And if the first message indicates that the voltage conversion circuit is in the charged mode, the control parameter controls the first control component and the second control component to switch the working state according to the charged mode.

As a first possible implementation manner, in a scenario of the first example of the first voltage conversion circuit, the communication control circuit may include a conversion circuit, an AP, and a conversion driving circuit, and the specific connection status may refer to a description of "the first example of the first voltage conversion circuit", which is not described herein again. In this case, referring to fig. 11a, S1001 may include S1001a, and S1002 may include S1002a, S1002b, S1002c, S1002d, and S1002 e. The relevant introduction of each step is as follows:

s1001a, the target device sends a first message to the conversion circuit through the target interface. Accordingly, the translation circuit receives a first message from the target device via the target interface.

Wherein the first message requests the voltage conversion circuit to be in a charging mode. For example, the first message is implemented as a request message requesting a battery in the voltage conversion circuit to charge the target device. The request message may carry charging parameters supported by the target device, such as charging voltage, charging current, and the like.

For example, where the translation circuit supports the USB PD protocol, the target device sends a first message to the translation circuit through pin CC1 and pin CC2 in the target interface. Accordingly, the translation circuit receives the first message from the target device through pin CC1 and pin CC2 in the target interface.

As another example, where the translation circuit supports the SCP protocol, the target device sends a first message to the translation circuit through pin DP and pin DM in the target interface. Accordingly, the translation circuit receives the first message from the target device via pin DP and pin DM in the target interface.

S1002a, the conversion circuit determines the electrical parameter from the first message.

The electrical parameter may be a charging parameter supported by the target device, such as a charging voltage, a charging current, a charging power, and the like.

For example, where the translation circuit supports the USB PD protocol, the translation circuit decodes the first message in the USB PD protocol format to obtain the electrical parameter.

As another example, where the conversion circuit supports the SCP protocol, the conversion circuit decodes the first message in accordance with the SCP protocol format to obtain the electrical parameters.

S1002b, the converting circuit sends the electrical parameter to the AP. Accordingly, the AP receives the electrical parameter from the switching circuit.

Illustratively, the switching circuit sends the electrical parameters to the AP via the I2C bus. Accordingly, the AP receives the electrical parameters from the conversion circuit via the I2C bus interface.

S1002c, the AP determines control parameters according to the electrical parameters.

Illustratively, the control parameters may include at least one of: pulse Width Modulation (PWM) parameters, charging duration, and charging percentage. The PWM reference may be a PWM period, a PWM duty cycle, etc., among others. The charging duration may refer to a time length for charging the target device with a battery in the voltage conversion circuit when the voltage conversion circuit is in the charging mode. The charging percentage may be a percentage of the remaining power of the battery in the voltage conversion circuit after the battery charges the target device, or a percentage of the target power obtained after the target device is charged.

For example, S1002c may be embodied as: and the AP determines a control parameter according to the electrical parameter and the reference factor.

Wherein the reference factor comprises at least one of:

the first term, the current charge of the battery, e.g., the current percentage charge of the battery.

The second term, the target charge of the battery, e.g., the target charge percentage of the battery.

Third, the current power of the target device, e.g., the current power percentage of the target device.

Fourth, a target power of the target device, e.g., a target power percentage of the target device.

When the reference factor is implemented as the first "current electric quantity of the battery", the AP determines the charging duration or the charging percentage in combination with the electric quantity of the battery in the voltage conversion circuit, so as to output the electric energy in combination with the self-capability of the voltage conversion circuit, thereby avoiding the situation that the electronic device with low electric quantity charges the electronic device with high electric quantity.

In the case that the reference factor is implemented as the second term "target electric quantity of the battery", the AP determines the charging duration or the charging percentage in combination with the target electric quantity of the battery in the voltage conversion circuit, so as to prevent the electric quantity of the battery in the voltage conversion circuit from being too low to affect the normal operation of the device where the voltage conversion circuit is located.

When the reference factor is implemented as the third item of "current electric quantity of the target device", the AP determines the charging duration or the charging percentage by combining the electric quantity of the target device itself, so as to avoid a situation that the electronic device with low electric quantity charges the electronic device with high electric quantity.

Under the condition that the reference factor is realized as the fourth item of target electric quantity of the target device, the AP determines the charging duration or the charging percentage by combining the target electric quantity of the target device, so as to meet the demand of the target device on the electric quantity and ensure the normal operation of the target device.

S1002d, the AP transmits the control parameter to the conversion drive circuit. Accordingly, the translation driver circuit receives control parameters from the AP.

The control parameter is the parameter determined in S1002 c.

And S1002e, controlling the working states of the first control assembly and the second control assembly according to the control parameters by the transformation driving circuit.

For example, the conversion driving circuit switches the on state and the off state of the first control component and the on state and the off state of the second control component according to the control parameter, so that the voltage conversion circuit operates in the charging mode or the charged mode.

Thus, through the steps, the communication control circuit can receive the first message from the target device to control the working mode of the voltage conversion circuit according to the first message, so that the flexible performance of the control of the circuit conversion circuit is improved.

As a second possible implementation manner, in a scenario of the second example of the first voltage conversion circuit, a connection status between the communication control circuit and the display unit may refer to a related description of "the second example of the first voltage conversion circuit", and details thereof are not repeated here. In this case, referring to fig. 11b, S1001 may include S1001b, and S1002 may include S1002f, S1002d, and S1002 e. The relevant introduction of each step is as follows:

s1001b, the display unit sends a first message to the application processor. Accordingly, the application processor receives a first message from the display unit.

Wherein the first message indicates that the voltage conversion circuit is in the charging mode or indicates that the voltage conversion circuit is in the charged mode.

Illustratively, still taking the scenario shown in fig. 4a as an example, a User Interface (UI) of the display unit of the electronic device a1 is shown in fig. 12, that is, the following operations may be performed between the electronic device a1 and the electronic device a 2: transmitting a photograph, transmitting a file, charging only, charging a USB device. In a case where the user selects "transmit photo" (not shown in fig. 12), the photo may be transmitted between the electronic device a1 and the electronic device a 2. In a case where the user selects "transfer file" (not shown in fig. 12), a file may be transferred between the electronic device a1 and the electronic device a 2. In a case where the user selects "charge only" (not shown in fig. 12), the electronic device a2 charges the battery in the electronic device a1, that is, the electronic device a1 is in a charged mode. In this case, the communication control circuit receives a first message from the display unit indicating that the voltage conversion circuit is in the charged mode. In the case where the user selects "charge the USB device", as shown in fig. 12, the electronic device a1 charges the electronic device a2, that is, the electronic device a1 is in the charging mode. In this case, the communication control circuit receives a first message from the display unit indicating that the voltage conversion circuit is in the charging mode.

S1002f, the AP determines the control parameter according to the first message.

For example, the description of the control parameter may refer to the description of S1002c, and will not be described herein. The AP may determine the control parameter according to an operating mode (e.g., a charging mode, or a charged mode) indicated by the first message.

For example, S1002f may be embodied as: and the AP determines a control parameter according to the first message and the reference factor.

The reference factor may be introduced in relation to S1002c, and is not described herein again.

The control parameter is the parameter determined in S1002 f.

Therefore, under the condition that a user inputs the first message through the display unit, the voltage conversion circuit can respond to the first message and work in the charging mode or the charged mode so as to meet the use requirement of the user and improve the flexibility of charging control.

As a third possible implementation manner, referring to fig. 13, still taking the scenario of fig. 4a as an example, the application processor of the electronic device a1 executes the following process in the case of "target interface is connected to the target device":

and S1301, judging whether the OTG equipment is the OTG equipment or not by the application processor, if so, executing the OTG equipment control flow, and if not, executing S1302.

S1302, the application processor determines whether the application processor is a computer, if so, executes S1304, and if not, executes S1303.

And S1303, judging whether the mobile phone is the application processor, if so, executing S1304, otherwise, repeatedly executing S1301.

And S1304, controlling the display unit to display the user interface by the application processor.

In this case, the user interface displayed by the display unit may be, for example, but not limited to, the interface shown in fig. 12. After the application processor performs S1304, S1305 and S1306 are performed:

s1305, the application processor determines whether the request message is received, if yes, then S1307 is executed, and if no, then S1305 and S1306 are repeatedly executed.

The request message is a message sent by the target device, that is, a request is made to charge the battery in the electronic device a1 for the target device. The request message may carry charging parameters supported by the target device, such as charging voltage, charging current, and the like.

S1306, the application processor determines whether a control command is received, if so, executes S1307, and if not, repeatedly executes S1305 and S1306.

Wherein the control instruction is an instruction input by a user through the display unit. For example, in the case where the user interface of the display unit is as shown in fig. 12, the control instruction may be "charge the USB device" as shown in fig. 12.

S1307, the application processor switches the working mode of the voltage conversion circuit according to the first message.

If the application processor executes S1307 after executing S1305, the first message is the electrical parameter in the request message. If the application processor executes S1307 after executing S1306, the first message is a control instruction.

The working mode refers to that the voltage conversion circuit is in a charging mode or a charged mode, which is specifically referred to in the description of the first control circuit and the description of the first voltage conversion method, and is not described herein again.

S1308, the application processor determines the control parameter according to the first message.

The specific implementation process of S1308 may refer to S1002c or S1002f, so as to complete charging, which is not described herein again.

In addition, the above-described "OTG device control flow" includes S1305, S1307, and S1308. In the "OTG device control flow", the charged voltage is 5V.

The embodiment of the application provides a second voltage conversion method, which is applied to the second voltage conversion circuit and can improve the charging power and the charging speed. In the charging mode of the voltage conversion circuit, referring to fig. 14a, the method comprises:

s1401a, when the first control component is turned on and the second control component is turned off, the battery charges the energy storage circuit and the target device respectively.

The electric energy stored by the energy storage circuit is recorded as first electric energy.

For example, referring to fig. 6, the first control component may be Q1, the second control component may be Q2, the battery may be B1, and the tank circuit may be L1. With Q1 turned on and Q2 turned off, battery B1, inductor L1 and the target device form a closed loop, and battery B1 charges inductor L1 and the target device, respectively, so that inductor L1 stores the first amount of electrical energy. The voltage of the battery is distributed on the inductor L1 and the target device, so that the voltage division effect is achieved, and the voltage reduction processing from the battery to the target interface is achieved.

And S1402a, when the first control component is turned off and the second control component is turned on, the energy storage circuit provides the first electric energy for the target device through the target interface.

For example, still taking fig. 6 as an example, when Q1 is turned off and Q2 is turned on, if the target interface is connected to the target device, the inductor L1 and the target device form a closed loop, and the inductor L1 continues to charge the target device. Due to the self-characteristics of the inductor, the inductor L1 generates an instantaneous voltage which is the same as the voltage applied to the target device, and the voltage reduction processing can still be realized.

In the charged mode of the voltage conversion circuit, see fig. 14b, the method comprises:

s1401b, when the first control component is turned off and the second control component is turned on, the target device charges the tank circuit through the target interface.

And recording the electric energy stored by the energy storage circuit as second electric energy.

Illustratively, still taking fig. 6 as an example, when Q1 is turned off and Q2 is turned on, the inductor L1 and the target device form a closed loop, and the target device charges the inductor L1. The stored electrical energy in the inductor L1 can be referred to as a second electrical energy.

And S1402b, under the condition that the first control component is turned on and the second control component is turned off, the energy storage circuit and the target device charge the battery.

Wherein the tank circuit provides a second amount of electrical energy to the battery.

Illustratively, still taking fig. 6 as an example, in the case that Q1 is turned on and Q2 is turned off, the battery B1, the inductor L1 and the target device form a closed loop, and the inductor L1 and the target device charge the battery B1, so that the second electric energy stored in the inductor L1 is transmitted to the battery. Since the target device and the inductor L1 are connected in series, the voltage of the target device and the inductor L1 jointly act on the battery B1, so as to achieve the effect of boosting, and the voltage acting on the battery is greater than the voltage of the target device, thereby implementing boosting processing to adapt to the charging requirement of the battery.

In the second voltage conversion method provided by the embodiment of the application, in the charging mode, the voltage of the battery is distributed on the energy storage circuit and the target device, so that the voltage division effect is achieved, the voltage reduction processing from the battery to the target interface is realized, and the charging voltage requirement of the target device is adapted. Even if the charging voltage of the target device is lower than the voltage of the battery, the charging function can be realized by the above circuit. Under the charged mode, the voltage provided by the target equipment and the voltage of the energy storage circuit jointly act on the battery to achieve the effect of boosting, so that the boosting processing from the target interface to the battery is realized, the charging voltage requirement of the battery is adapted, and the high-power charging is realized. Because the battery in the voltage conversion circuit can be used as an element for providing energy and can also be used as an element for receiving energy, the electronic equipment comprising the voltage conversion circuit can be used as charging equipment and also can be used as equipment to be charged, and the flexibility of equipment charging is improved.

In some embodiments, the operation process of the communication control circuit may refer to the description of the "communication control circuit" part in the first voltage conversion method, and is not described herein again.

The embodiment of the application provides a third voltage conversion method, which is applied to the third voltage conversion circuit and can improve the charging power and the charging speed. The third voltage conversion method is described as follows:

if the third control component (e.g., Q1 in fig. 8) is in the closed state and the fourth control component (e.g., Q2 in fig. 8) is in the open state, the third voltage converting circuit is in the charging mode, which is described in detail with reference to fig. 9a in the first voltage converting method. If the third voltage converting circuit is in the charged mode when the third control element (e.g., Q1 in fig. 8) is in the closed state and the fourth control element (e.g., Q2 in fig. 8) is in the open state, the details of fig. 9b in the first voltage converting method will be described, and the details will not be repeated here.

If the third voltage converting circuit is in the charging mode when the second control component (e.g., Q4 in fig. 8) is in the closed state and the first control component (e.g., Q3 in fig. 8) is in the open state, see the description of fig. 14a in the second voltage converting method. If the third voltage converting circuit is in the charged mode when the second control element (e.g., Q4 in fig. 8) is in the closed state and the first control element (e.g., Q3 in fig. 8) is in the open state, the details of fig. 14b in the second voltage converting method will be described, and the details will not be repeated here.

In the third voltage conversion method provided by the embodiment of the application, the energy storage circuit is respectively connected with the battery and the target interface, and then the energy storage circuit is controlled by the first control assembly, the second control assembly, the third control assembly and the fourth control assembly, so that the battery, the energy storage circuit and the target device form a closed loop. When the second control component is in a closed state and the first control component is in an open state, the working process of the third voltage conversion circuit can be referred to the working process of the first voltage conversion circuit, so that the voltage boosting processing from the battery to the target interface and the voltage reducing processing from the target interface to the battery are realized, and the high-power charging is realized. When the fourth control component is in an open state and the third control component is in a closed state, the working process of the third voltage conversion circuit can be referred to the working process of the second voltage conversion circuit to realize voltage reduction processing from the battery to the target interface and voltage boosting processing from the target interface to the battery, so that high-power charging is realized.

In some embodiments, for a working process of a communication control circuit in the third voltage conversion method in this embodiment, reference may be made to related descriptions of a "communication control circuit" part in the first voltage conversion method, which is not described herein again. The difference from the first voltage conversion method is that the control parameters are respectively corresponding to the operating states (such as on state or off state) of the first control assembly, the second control assembly, the third control assembly and the fourth control assembly.

Referring to fig. 15, an electronic device 1500 according to an embodiment of the present application includes the processor 1501, the voltage conversion circuit 1502, and the memory 1503.

The processor 1501 may be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like.

The voltage converting circuit 1502 may be the voltage converting circuit in any one of the possible embodiments of the first voltage converting circuit, the second voltage converting circuit, the third voltage converting circuit, or the third voltage converting circuit. Where the voltage conversion circuit 1502 includes an application processor, the application processor may be the same processor as the application processor in the voltage conversion circuit 1502.

The memory 1503 may include a volatile memory (RAM), such as a Random Access Memory (RAM). The memory 1503 may also include a non-volatile memory (non-volatile memory), such as a read-only memory (ROM), a flash memory, a Hard Disk Drive (HDD), or a solid-state disk (SSD). The memory 1503 stores executable code, which the processor 1501 executes to perform the voltage conversion method described above.

Optionally, electronic device 1500 may also include a bus 1504. The target interface in the voltage conversion circuit 1502, the processor 1502, and the memory 1501 may be connected to each other through a bus 1504; the bus 1504 may include a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus 1504 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in FIG. 15, but this is not intended to represent only one bus or type of bus.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and all changes and substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A voltage conversion circuit, comprising:

a target interface for connecting a target device;

a battery;

the first end of the energy storage circuit is electrically connected with the positive electrode of the battery;

a first control component electrically connected to the second end of the tank circuit and the negative electrode of the battery for causing the battery in the voltage conversion circuit in a charging mode to charge the tank circuit in a conducting state to cause the tank circuit to store a first amount of electrical energy or to cause the tank circuit in the voltage conversion circuit in a charged mode to provide a second amount of electrical energy to the battery;

a second control component electrically connected to the second end of the tank circuit and the target interface, for enabling the battery in the voltage conversion circuit in the charging mode to charge the target device through the target interface and enabling the tank circuit to provide the first amount of electrical energy to the target device through the target interface in the conducting state, or enabling the tank circuit in the voltage conversion circuit in the charged mode to receive the second amount of electrical energy from the target device through the target interface and enabling the target device to charge the battery through the target interface and the tank circuit.

2. A voltage conversion circuit, comprising:

a target interface for connecting a target device;

a battery;

a tank circuit; the second end of the energy storage circuit is electrically connected with the target interface;

a first control component electrically connected to a first terminal of the tank circuit and a positive electrode of the battery, for enabling the battery in the voltage conversion circuit in a charging mode to charge the tank circuit in a conducting state, so that the tank circuit stores a first amount of electric energy, and the target device is charged through the target interface, or enabling the tank circuit in the voltage conversion circuit in a charged mode to provide a second amount of electric energy to the battery, and the target device is charged through the target interface and the tank circuit;

a second control component electrically connected to the first terminal of the tank circuit and the negative electrode of the battery for enabling the tank circuit in the voltage conversion circuit in the charging mode to provide the first amount of electrical energy to the target device through the target interface or enabling the tank circuit in the voltage conversion circuit in the charged mode to receive the second amount of electrical energy from the target device through the target interface in the on state.

3. The voltage conversion circuit according to claim 1 or 2, further comprising:

the communication control circuit is respectively electrically connected with the first control assembly and the second control assembly and is used for acquiring a first message and determining a control parameter according to the first message;

if the first message indicates that the voltage conversion circuit is in the charging mode, the control parameter controls the first control component and the second control component to switch working states according to the charging mode;

if the first message indicates that the voltage conversion circuit is in the charged mode, the control parameter controls the first control component and the second control component to switch the working state according to the charged mode.

4. The voltage conversion circuit of claim 3,

the communication control circuit is further electrically connected to the target interface for receiving the first message from the target device through the target interface, wherein the first message requests the voltage conversion circuit to be in the charging mode.

5. The voltage conversion circuit of claim 4, wherein the communication control circuit comprises:

the conversion circuit is electrically connected with the target interface and used for receiving a first message from the target equipment through the target interface and determining an electrical parameter according to the first message, wherein the electrical parameter is a charging parameter supported by the target equipment;

the application processor AP is electrically connected with the conversion circuit and used for receiving the electrical parameters from the conversion circuit and determining the control parameters according to the electrical parameters;

and the conversion driving circuit is electrically connected with the AP, the first control assembly and the second control assembly and is used for receiving the control parameters from the AP and controlling the working states of the first control assembly and the second control assembly according to the control parameters.

6. The voltage conversion circuit of claim 3,

the communication control circuit is also electrically connected with a display unit and used for receiving the first message from the display unit;

wherein the voltage conversion circuit further comprises the display unit.

7. A voltage conversion method is characterized by being applied to a voltage conversion circuit, wherein the voltage conversion circuit comprises a target interface, a battery, an energy storage circuit, a first control assembly and a second control assembly; the target interface is used for connecting target equipment;

when the voltage conversion circuit is in a charging mode, the method comprises:

the battery charges the energy storage circuit in a conducting state of the first control assembly so that the energy storage circuit stores first electric energy, wherein a first end of the energy storage circuit is electrically connected with a positive electrode of the battery, and a second end of the energy storage circuit is electrically connected with a negative electrode of the battery;

the tank circuit provides the first amount of electrical energy to the target device through the target interface in the on state of the second control assembly, and the battery charges the target device through the tank circuit and the target interface in the on state of the second control assembly, wherein the second control assembly is electrically connected to the second end of the tank circuit and the target interface;

when the voltage conversion circuit is in a charged mode, the method comprises:

the target device charges the battery through the target interface and the tank circuit in the on state of the second control component, and provides a second amount of electric energy to the tank circuit through the target interface;

the tank circuit provides the second amount of electrical energy to the battery in the on state of the first control component.

8. A voltage conversion method is applied to a voltage conversion circuit, wherein the voltage conversion circuit comprises a target interface, a battery, an energy storage circuit, a first control assembly and a second control assembly; the target interface is used for connecting target equipment;

the battery charges the energy storage circuit in the on state of the first control assembly so that the energy storage circuit stores first electric energy and charges the target equipment through the target interface, the second end of the energy storage circuit is electrically connected with the target interface, and the first control assembly is electrically connected with the first end of the energy storage circuit and the positive electrode of the battery;

the energy storage circuit provides the first electric energy for the target equipment through the target interface in a conducting state of the second control assembly, and the second control assembly is electrically connected with the first end of the energy storage circuit and the negative electrode of the battery;

when the voltage conversion circuit is in a charged mode, the method comprises:

the target device charges the energy storage circuit through the target interface in a conducting state of the second control assembly so that the energy storage circuit stores second electric energy;

the tank circuit provides the second amount of electrical energy to the battery in the on state of the first control assembly, and the target device charges the battery through the target interface and the tank circuit in the on state of the first control assembly.

9. The method according to claim 7 or 8, characterized in that the method further comprises:

the communication control circuit acquires a first message and determines a control parameter according to the first message;

the voltage conversion circuit further comprises the communication control circuit, and the communication control circuit is electrically connected with the first control assembly and the second control assembly respectively;

if the first message indicates that the voltage conversion circuit is in the charging mode, the control parameter controls the first control assembly and the second control assembly to switch working states according to the charging mode;

10. The method of claim 9, wherein the communication control circuit obtaining the first message comprises:

the communication control circuitry receives the first message from the target device through the target interface;

wherein the communication control circuit is further electrically connected to the target interface, and the first message requests the voltage conversion circuit to be in the charging mode.

11. The method of claim 10, wherein the communication control circuitry receives the first message from the target device through the target interface, comprising:

the conversion circuit receives the first message from the target device through the target interface, wherein the communication control circuit comprises the conversion circuit, and the conversion circuit is electrically connected with the target interface;

the communication control circuitry determines control parameters from the first message, including:

the conversion circuit determines an electrical parameter from the first message, wherein the electrical parameter is a charging parameter supported by the target device;

an application processor AP receives the electrical parameters from the conversion circuit and determines the control parameters according to the electrical parameters, wherein the communication control circuit further comprises the AP, and the AP is electrically connected with the conversion circuit;

the conversion driving circuit receives the control parameters from the AP and controls the working states of the first control assembly and the second control assembly according to the control parameters, wherein the communication control circuit further comprises the conversion driving circuit, and the conversion driving circuit is respectively and electrically connected with the AP, the first control assembly and the second control assembly.

12. The method of claim 11, wherein the AP determines the control parameter from the electrical parameter, comprising:

the AP determines the control parameters according to the electrical parameters and the reference factors;

wherein the reference factor comprises at least one of:

the current charge of the battery;

a target charge level of the battery;

the current electric quantity of the target equipment;

a target electrical quantity of the target device.

13. The method of claim 9, wherein the communication control circuit obtaining the first message comprises:

the communication control circuit receives the first message from a display unit, wherein the voltage conversion circuit further comprises the display unit, and the communication control circuit is further electrically connected with the display unit.

14. An electronic device comprising the voltage conversion circuit according to any one of claims 1 to 6.