Charging circuit and intelligent terminal

Abstract

The invention discloses a charging circuit and an intelligent terminal. The charging circuit comprises a switching module, a control module and a battery. The switching module comprises a first input end and a second input end, the first input end is used for receiving wireless power supply voltage, and the second input end is used for receiving wired power supply voltage; the battery is connected with the switching module; the control module is connected with the switching module and is used for controlling the switching module to enter a corresponding charging mode according to the current charging mode so as to charge the battery; wherein the charging mode comprises a wired mode and a wireless mode. According to the technical scheme, peripheral devices can be reduced, and the cost is reduced.

Description

Technical Field

[0001] This application relates to the field of charging technologies, and in particular, to a charging circuit and an intelligent terminal. Background Art

[0002] In recent years, wireless charging technology has gradually emerged. It uses the principles of electromagnetic induction or magnetic resonance to charge devices without physical connection, greatly improving the convenience of use. To meet the dual demands of users for charging efficiency and convenience, multi-mode charging technology has emerged. This technology allows intelligent terminals to support both wired charging and wireless charging, and has both fast charging and slow charging modes. Users can flexibly select the charging method according to the actual scenario.

[0003] In the process of conceiving and implementing this application, the inventors found at least the following problems: The charging system of intelligent terminals usually adopts a split design, that is, the wired charging module, the wireless charging module, and the related power management module each independently implement functions. Although this design can meet the basic requirements in terms of function, it has many limitations. For example, the split modules occupy a large circuit board area, and there are many additional peripheral components, resulting in a relatively high cost.

[0004] The foregoing description is for the purpose of providing general background information and does not necessarily constitute prior art. Summary of the Invention

[0005] This application provides a charging circuit and an intelligent terminal to reduce peripheral components and lower costs.

[0006] This application provides a charging circuit, including a switching module, a control module, and a battery; the switching module includes a first input terminal and a second input terminal, the first input terminal is used to receive a wireless power supply voltage, and the second input terminal is used to receive a wired power supply voltage; the battery is connected to the switching module; the control module is connected to the switching module and is used to control the switching module to enter the corresponding charging mode according to the current charging mode to charge the battery; wherein, the charging modes include a wired mode and a wireless mode.

[0007] Optionally, the switching module includes: a wireless unit, a charging unit, and a first switching tube; the input terminal of the wireless unit is connected to the first input terminal; the input terminal of the charging unit is connected to the second input terminal; one end of the first switching tube is connected to the wireless unit, the other end of the first switching tube is connected to the charging unit, and the control terminal of the first switching tube is connected to the control module; the control module is further used to control the first switching tube to be turned off in the wired mode; and / or, control the first switching tube to be turned on in the wireless mode.

[0008] Optionally, the charging unit includes: a boost circuit and a buck circuit; the input end of the boost circuit is connected to the second input end and the other end of the first switching tube, and the output end of the boost circuit is connected to the battery; the input end of the buck circuit is connected to the second input end, the boost circuit, and the other end of the first switching tube, and the output end of the buck circuit is connected to the battery.

[0009] Optionally, the wired mode includes a wired fast charging mode and a wired slow charging mode; the wireless mode includes a wireless fast charging mode and a wireless slow charging mode. The control module is further configured to include at least one of the following: in the wired fast charging mode, control the boost circuit to conduct, and control the buck circuit and the first switching tube to disconnect, so as to enter the wired fast charging mode; in the wired slow charging mode, control the buck circuit to conduct, and control the boost circuit and the first switching tube to disconnect, so as to enter the wired slow charging mode; in the wireless fast charging mode, control the first switching tube and the boost circuit to conduct, and control the buck circuit to disconnect, so as to enter the wireless fast charging mode; in the wireless slow charging mode, control the first switching tube and the buck circuit to conduct, and control the boost circuit to disconnect, so as to enter the wireless slow charging mode.

[0010] Optionally, the boost circuit includes a second switching tube, a third switching tube, a fourth switching tube, and a fifth switching tube connected in series; one end of the second switching tube is connected to the second input end and the other end of the first switching tube, the other end of the fifth switching tube is grounded, and the connection point between the third switching tube and the fourth switching tube is connected to the battery; the control ends of the second switching tube, the third switching tube, the fourth switching tube, and the fifth switching tube are connected to the control module.

[0011] Optionally, the boost circuit further includes: a first capacitor; one end of the first capacitor is connected to the connection point between the second switching tube and the third switching tube, and the other end of the first capacitor is connected to the connection point between the fourth switching tube and the fifth switching tube, for storing the corresponding power supply voltage to charge the battery; and / or, the buck circuit includes: a sixth switching tube, a seventh switching tube, and an eighth switching tube; one end of the sixth switching tube is connected to the second input end, the boost circuit, and the other end of the first switching tube, the other end of the sixth switching tube is connected to one end of the seventh switching tube and one end of the eighth switching tube; the other end of the seventh switching tube is grounded; the other end of the eighth switching tube is connected to the battery; the control ends of the sixth switching tube, the seventh switching tube, and the eighth switching tube are connected to the control module.

[0012] Optionally, the wireless unit includes: a low dropout regulator and a rectifier circuit; the rectifier circuit is connected to the first input end and the low dropout regulator, the output end of the low dropout regulator is connected to one end of the first switching tube, and the other end of the low dropout regulator is grounded; the rectifier circuit is configured to convert the wireless power supply voltage into a DC power supply voltage and transmit it to the low dropout regulator, and the low dropout regulator is configured to regulate the DC power supply voltage.

[0013] Optionally, the wireless unit further includes: a second capacitor; the second capacitor is connected in parallel with the rectification circuit and the low-dropout regulator, and is used to protect the circuit.

[0014] Optionally, the charging circuit further includes: an inductor; one end of the inductor is connected to the switching module, and the other end of the inductor is connected to the battery, and is used to store the corresponding power supply voltage to charge the battery.

[0015] This application also provides an intelligent terminal, including the charging circuit as described in any one of the above.

[0016] Optionally, the intelligent terminal further includes: a charging coil, a magnetic induction wireless circuit, a magnetic resonance wireless circuit, and a radio wave type circuit; the magnetic induction wireless circuit, the magnetic resonance wireless circuit, and the radio wave type circuit are connected in parallel to the charging coil and the switching module, and are used for wireless charging.

[0017] Optionally, the intelligent terminal further includes: a charging electrode and an electric field coupling type wireless circuit; the electric field coupling type wireless circuit is connected to the charging electrode and the switching module, and is used for wireless charging.

[0018] In the charging circuit and the intelligent terminal provided by this application, the charging circuit includes a switching module, a control module, and a battery; the switching module includes a first input terminal and a second input terminal, the first input terminal is used to receive a wireless power supply voltage, and the second input terminal is used to receive a wired power supply voltage; the battery is connected to the switching module; the control module is connected to the switching module, and is used to control the switching module to enter the corresponding charging mode according to the current charging mode to charge the battery; wherein, the charging modes include a wired mode and a wireless mode. In the solution of this application, by integrating the wired charging mode and the wireless charging mode into the same switching module, seamless switching and collaborative work of different charging methods are realized. This integrated design reduces the number of peripheral devices required for the traditional separate design, significantly saves the circuit board area, and reduces the hardware cost. Description of the Drawings

[0019] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings required to be used in the description of the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of an intelligent terminal charging system integrating wired and wireless charging functions;

[0021] Figure 2 It is a block diagram of the architecture of an exemplary charge pump charging IC;

[0022] Figure 3 A schematic structural diagram of a charging circuit provided in the first embodiment of the present application;

[0023] Figure 4 A schematic structural diagram of a charging circuit provided in an example of the present application;

[0024] Figure 5 A schematic structural diagram of a charging circuit provided in this example;

[0025] Figure 6 A schematic structural diagram of a smart terminal in an example;

[0026] Figure 7 A schematic hardware structure diagram of a mobile terminal in each embodiment of the present application.

[0027] The implementation, functional features, and advantages of the present application will be further described in conjunction with the embodiments with reference to the accompanying drawings. Through the above-mentioned accompanying drawings, the clear embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Specific embodiments

[0028] Here, the exemplary embodiments will be described in detail, and their examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0029] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including one..." does not exclude the existence of other identical elements in the process, method, article or device including the element. Optionally, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or different meanings, and their specific meanings need to be determined by their explanations in the specific embodiments or further in combination with the context in the specific embodiments.

[0030] It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this document, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to determining". Furthermore, as used herein, the singular forms "a", "an", and "the" are also intended to include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising", "including" indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or at least two other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or", "and / or", "including at least one of the following" used in this application may be interpreted inclusively, or mean any one or any combination. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C", and again, "A, B or C" or "A, B and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C". An exception to this definition only occurs when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0031] Depending on the context, the words "if", "when" as used herein may be interpreted as "when" or "while" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)".

[0032] It should be understood that the embodiments described herein are only used to explain this application and are not used to limit this application.

[0033] In the following description, the suffixes such as "module", "component", or "unit" used to represent elements are only for the convenience of explaining this application and have no specific meaning in themselves. Therefore, "module", "component", or "unit" can be used interchangeably.

[0034] In today's digital age, smart terminals have become indispensable tools in people's lives, and their battery life and charging efficiency are directly related to the user experience and the practicality of the device. Wired charging technology, with its mature technology and efficient energy transmission, has always been the mainstream way to charge smart terminals. As users' requirements for device portability and usage flexibility continue to increase, wireless charging technology, as an emerging technology, with its untethered and contactless features, brings a brand-new charging experience to users. It realizes wireless energy transmission through electromagnetic induction or magnetic field resonance, breaking the spatial limitation of traditional charging methods and enabling users to charge their devices without plugging and unplugging cables.

[0035] To balance charging efficiency and usage convenience and at the same time solve the limitations of a single charging mode, multi-mode charging technology has emerged. This technology allows smart terminals to seamlessly switch between wired and wireless charging. Through the power management unit processor, the device can automatically select the optimal charging method according to the current charging requirements and environmental conditions to achieve higher charging efficiency and a better user experience.

[0036] Figure 1 Schematic diagram of a smart terminal charging system integrating wired and wireless charging functions. As Figure 1 shown, the system includes a charger, which contains an AC-DC (alternating current - direct current) converter and a control protocol module inside, used to convert alternating current into direct current and manage the charging process. Through a C TO C cable, the charger is connected to the TYPE C interface of the smart terminal, and this interface supports bidirectional data and power transmission. Inside the smart terminal, a switch charging IC and a charge pump charging IC are integrated, which are responsible for the slow charging and fast charging functions of the battery respectively. Figure 2 Block diagram of the architecture of an example charge pump charging IC. An OVP (overvoltage protection module) is also set between the charge pump charging IC and the TYPE C interface to provide protection when the voltage is too high. The system also includes a magnetic induction wireless charging IC, which realizes the wireless charging function through cooperation with the magnetic induction charging coil. Optionally, the system includes a power management unit processor, which is responsible for controlling the switching between the switch charging IC, the charge pump charging IC, and the magnetic induction wireless charging IC to enter the corresponding charging mode.

[0037] Optionally, when using wired charging, the charger provides DC power to the smart terminal through a C TO C cable. The power first passes through the OVP (Over-Voltage Protection Module) to ensure that the voltage is within a safe range, and then charges the battery through the switching charging IC and the charge pump charging IC. The switching charging IC is responsible for basic charging control (i.e., slow charging), while the charge pump charging IC achieves fast charging (i.e., quick charging) through efficient charge pump technology. In the wireless charging mode, the magnetic induction charging coil generates a magnetic field that interacts with the magnetic induction wireless charging IC inside the smart terminal to wirelessly transmit electrical energy to the battery.

[0038] In the above charging system, the switching charging IC is responsible for slow charging in wired charging, the charge pump charging IC is responsible for fast charging in wired charging, and the magnetic induction wireless charging IC is responsible for wireless charging. Since the wired charging and wireless charging functions are implemented by independent ICs respectively, this design results in more peripheral devices. Each IC requires a supporting peripheral circuit to ensure its normal operation, including capacitors, inductors, diodes, transistors, etc. These peripheral devices not only increase the area occupied by the circuit board but also significantly increase the overall material cost. Optionally, more peripheral devices also mean more complex circuit design and higher assembly costs, which directly affect the final cost of the device.

[0039] The technical content provided in this application aims to solve the above technical problems in the related art. In the embodiments of this application, the charging circuit includes a switching module, a control module, and a battery; the switching module includes a first input terminal and a second input terminal, the first input terminal is used to receive the wireless power supply voltage, and the second input terminal is used to receive the wired power supply voltage; the battery is connected to the switching module; the control module is connected to the switching module and is used to control the switching module to enter the corresponding charging mode according to the current charging mode to charge the battery; optionally, the charging mode includes a wired mode and a wireless mode. In the solution of this application, by integrating the wired charging mode and the wireless charging mode into the same switching module, seamless switching and collaborative work of different charging methods are achieved. This integrated design reduces the number of peripheral devices required for the traditional separate design, significantly saves the circuit board area, and reduces the hardware cost.

[0040] The technical solutions of this application will be described in detail below with specific embodiments. These specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. In the description of this application, unless otherwise clearly specified and limited, each term should be understood in a broad sense in the art. The embodiments of this application will be described below with reference to the accompanying drawings.

[0041] The First Embodiment

[0042] Figure 3The following is a schematic structural diagram of a charging circuit provided by the first embodiment of the present application. As Figure 3 shown, the charging circuit includes a switching module 30, a control module 31, and a battery 32;

[0043] The switching module 30 includes a first input terminal and a second input terminal. The first input terminal is used to receive a wireless power supply voltage, and the second input terminal is used to receive a wired power supply voltage;

[0044] The battery 32 is connected to the switching module 30;

[0045] The control module 31 is connected to the switching module 30 and is used to control the switching module 30 to enter the corresponding charging mode according to the current charging mode to charge the battery 32; wherein, the charging modes include a wired mode and a wireless mode.

[0046] In one embodiment, the charging circuit includes three parts, namely a switching module 30, a control module 31, and a battery 32. The core design of this charging circuit lies in the switching module 30, which allows the smart terminal to switch between the wired charging mode and the wireless charging mode. This module includes two input terminals, namely a first input terminal and a second input terminal. The first input terminal is used to receive the power supply voltage from a wireless charging base or a wireless charging device, while the second input terminal is used to receive the wired power supply voltage transmitted through a charging cable. This design enables the smart terminal to adapt to different charging environments, whether it is directly placed on a wireless charging base or a wireless charging device, or connected to a power source through a traditional charging cable.

[0047] Optionally, the battery 32, as an energy storage component, is directly connected to the switching module 30, and the other end is grounded to ensure efficient transmission and storage of electric energy. The function of the control module 31 is to intelligently control the switching module 30 according to the current charging requirements and environmental conditions, so that it enters the corresponding charging mode. Optionally, when the user places the device on a wireless charging base, the control module 31 will detect this behavior and control the switching module 30 to switch to the wireless charging mode, conduct the corresponding transmission path, and wirelessly charge the device. Optionally, if the user connects the device through a charging cable, the control module 31 will switch to the wired charging mode, conduct the corresponding transmission path, and charge the device by wire.

[0048] In the above example, the integrated charging circuit design significantly improves the utilization rate of the circuit board and reduces costs by combining the wired charging and wireless charging functions into a single switching module. Optionally, the switching module can be a charging mode switching IC. This charging mode switching IC integrates both the wired charging mode and the wireless charging mode. By integrating these two charging modes into one module, the number of required independent components, such as ICs, inductors, capacitors, and connectors, can be reduced, thereby reducing the material cost and manufacturing cost.

[0049] In one embodiment, Figure 4 FIG. 1 is a schematic structural diagram of a charging circuit provided for an example of the present application. As Figure 4 shown, the switching module 30 includes: a wireless unit 301, a charging unit 302, and a first switching transistor Q1; an input end of the wireless unit 301 is connected to a first input end; an input end of the charging unit 302 is connected to a second input end; one end of the first switching transistor Q1 is connected to the wireless unit 301, the other end of the first switching transistor Q1 is connected to the charging unit 302, and a control end of the first switching transistor Q1 is connected to the control module 31; the control module 31 is further configured to control the first switching transistor Q1 to be turned off in the wired mode; and / or control the first switching transistor Q1 to be turned on in the wireless mode.

[0050] Optionally, the design of the switching module 30 is the key to realizing the switching between the wired charging mode and the wireless charging mode. The module includes three main parts: a wireless unit 301, a charging unit 302, and a first switching transistor Q1. The wireless unit 301 is responsible for processing the power reception and conversion in the wireless charging mode, and its input end is connected to the first input end of the switching module 30 for receiving the voltage from the wireless power source. The charging unit 302 is responsible for the power management in the wired charging mode, and its input end is connected to the second input end of the switching module 30 for receiving the wired power supply voltage.

[0051] Optionally, the first switching transistor Q1 operates under the instruction of the control module 31. One end of it is connected to the wireless unit 301, the other end is connected to the charging unit 302, and the control end is connected to the control module 31. In the wired charging mode, the control module 31 issues an instruction to turn off the first switching transistor Q1, thereby cutting off the connection between the wireless unit 301 and the battery 32 to ensure that the electric energy only flows to the battery 32 through the charging unit 302. On the contrary, in the wireless charging mode, the control module 31 issues another instruction to control the first switching transistor Q1 to be turned on, connecting the wireless unit 301 to the battery 32, thereby realizing wireless charging. Among them, the first switching transistor Q1 can be a controllable switching device such as a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) or an Insulate-Gate Bipolar Transistor (IGBT), which is not limited herein.

[0052] Through the solution of this example, the intelligent terminal is allowed to flexibly switch between the wired charging mode and the wireless charging mode according to the current charging environment and user requirements, improving the convenience and efficiency of charging. At the same time, by precisely controlling the conduction and disconnection of the first switching transistor, interference between the two charging modes can be avoided, ensuring the stability and safety of the charging process.

[0053] In one embodiment, the charging unit 302 includes: a boost circuit and a buck circuit; the input end of the boost circuit is connected to the second input end and the other end of the first switching transistor Q1, and the output end of the boost circuit is connected to the battery 32; the input end of the buck circuit is connected to the second input end, the boost circuit, and the other end of the first switching transistor Q1, and the output end of the buck circuit is connected to the battery 32.

[0054] Optionally, the charging unit 302 is designed to adapt to different charging requirements, including two parts: a boost circuit and a buck circuit. The input ends of the boost circuit and the buck circuit are both connected to the second input end and the other end of the first switching transistor Q2. Such a design allows for flexibly selecting the boost circuit or the buck circuit to charge the battery 32 according to the voltage requirement of the battery 32 in the wired charging mode and the wireless charging mode.

[0055] Optionally, the main function of the boost circuit is to raise the input lower voltage to the required charging voltage when the battery 32 needs a charging voltage higher than the input voltage, and then charge the battery 32 through its output end, that is, enter the fast charging mode. This process is crucial for supporting fast charging and meeting the voltage requirements of the battery 32 at different charging stages. Optionally, when the battery 32 has a low power level, a higher charging voltage may be required to speed up the charging speed; while when the battery 32 is nearly full, the charging voltage may need to be reduced to protect the battery.

[0056] Optionally, the buck circuit functions when the input voltage is higher than the charging voltage required by the battery 32. It reduces the higher input voltage to a voltage suitable for charging the battery 32, and then charges the battery 32 through its output end, that is, enters the slow charging mode. This design is very important for ensuring the safety and efficiency of the charging process, because it can prevent the battery 32 from being damaged by excessive voltage.

[0057] Optionally, in the charging unit 302, the output ends of the boost circuit and the buck circuit are both connected to the battery 32, which means that the control module 31 can intelligently select to use the boost circuit or the buck circuit to charge the battery 32 according to the real-time voltage and charging state of the battery 32. Optionally, when the battery 32 has a low power level and fast charging is required, the control module 31 will then select to turn on the boost circuit and turn off the buck circuit at this time; while when the battery 32 has a high power level and a lower voltage charging is required to extend the battery life, the control module 31 will then select to turn on the buck circuit and turn off the boost circuit at this time.

[0058] Through the solution of this example, the charging unit can adapt to different charging scenarios and battery states, realizing a more flexible and efficient charging process. At the same time, this also helps to extend the service life of the battery and improve the overall performance and user experience of the intelligent terminal.

[0059] In one embodiment, the wired mode includes a wired fast charging mode and a wired slow charging mode; the wireless mode includes a wireless fast charging mode and a wireless slow charging mode. Optionally, in the wired fast charging mode, the boost circuit is controlled to conduct, and the buck circuit and the first switching transistor Q1 are controlled to disconnect, so as to enter the wired fast charging mode; optionally, in the wired slow charging mode, the buck circuit is controlled to conduct, and the boost circuit and the first switching transistor Q1 are controlled to disconnect, so as to enter the wired slow charging mode; optionally, in the wireless fast charging mode, the first switching transistor Q1 and the boost circuit are controlled to conduct, and the buck circuit is controlled to disconnect, so as to enter the wireless fast charging mode; optionally, in the wireless slow charging mode, the first switching transistor Q1 and the buck circuit are controlled to conduct, and the boost circuit is controlled to disconnect, so as to enter the wireless slow charging mode.

[0060] Optionally, the control module 31 intelligently controls the boost circuit and the buck circuit in the charging unit 302, as well as the state of the first switching transistor Q1 according to the current charging requirements and conditions, so as to implement different charging modes. The charging modes include four types, namely the wired fast charging mode, the wired slow charging mode, the wireless fast charging mode and the wireless slow charging mode.

[0061] Optionally, in the wired fast charging mode, the control module 31 will conduct the boost circuit, and at the same time ensure that the buck circuit and the first switching transistor Q1 are in the off state. The purpose of this is to raise the input voltage to a voltage level suitable for fast charging, and at the same time avoid the intervention of the buck circuit, ensuring that electrical energy is transmitted to the battery 32 with the highest efficiency. This mode is suitable for scenarios where rapid charging of the battery is required, such as when the user needs to use the device in a short period of time.

[0062] Optionally, in the wired slow charging mode, the control module 31 will choose to conduct the buck circuit, and at the same time disconnect the boost circuit and the first switching transistor Q1. This mode is suitable for situations where the battery is fully charged or the user is not in a hurry to use the device. It can charge the battery 32 at a lower voltage, thereby reducing the heat generated during the charging process and extending the service life of the battery 32.

[0063] Optionally, in the wireless charging mode, the control module 31 also plays a key role. In the wireless fast charging mode, the control module 31 will conduct the first switching transistor Q1 and the boost circuit at the same time, and disconnect the buck circuit. This configuration allows the voltage received by the wireless unit 301 to be raised to a level suitable for fast charging, while ensuring that electrical energy is directly and efficiently transmitted to the battery 32. This mode is suitable for situations where the user hopes to quickly charge the battery while using wireless charging.

[0064] Optionally, in the wireless slow charging mode, the control module 31 turns on the first switching transistor Q1 and the buck circuit, and at the same time turns off the boost circuit. This mode is suitable for users to use wireless charging when fast charging is not required. It can charge the battery 32 at a lower voltage, reduce heat generation during charging, help protect the battery 32 and extend its service life.

[0065] Through the solution of this example, the charging circuit can flexibly switch between different charging modes according to different charging requirements and conditions, so as to achieve an efficient, safe and highly adaptable charging process. This design not only improves the charging flexibility and user experience, but also helps to optimize the charging efficiency of the battery and extend its service life.

[0066] In one embodiment, the boost circuit includes a second switching transistor, a third switching transistor, a fourth switching transistor and a fifth switching transistor connected in series; one end of the second switching transistor is connected to the second input terminal and the other end of the first switching transistor Q1, the other end of the fifth switching transistor is grounded, and the connection point between the third switching transistor and the fourth switching transistor is connected to the battery 32; the control terminals of the second switching transistor, the third switching transistor, the fourth switching transistor and the fifth switching transistor are connected to the control module 31.

[0067] Optionally, in the boost circuit design of the charging unit 302, the second switching transistor, the third switching transistor, the fourth switching transistor and the fifth switching transistor connected in series work to achieve voltage boost to meet the requirement of the battery 32 for a higher voltage in the fast charging mode. This series configuration of switching transistors is a typical structure of a boost converter and can effectively raise the input lower voltage to the charging voltage required by the battery 32. Optionally, the second switching transistor, the third switching transistor, the fourth switching transistor and the fifth switching transistor can be controllable switching devices such as Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) or Insulate-Gate Bipolar Transistor (IGBT), which are not limited here.

[0068] Optionally, one end of the second switching transistor is connected to the second input terminal and the other end of the first switching transistor Q1, and the other end of the fifth switching transistor is grounded, providing a stable reference point for the circuit. The connection point between the third switching transistor and the fourth switching transistor is connected to the battery 32, and this connection point is the output end of the boost circuit, responsible for delivering the boosted voltage to the battery 32.

[0069] Optionally, the control module 31 adjusts the operating state of the boost circuit by controlling the conduction and disconnection of these switching tubes. By precisely controlling the switching frequency and duty cycle of these switching tubes, precise regulation of the output voltage is achieved to adapt to the charging requirements of the battery 32. Optionally, when the battery 32 needs to be quickly charged, the control module 31 increases the switching frequency of the switching tubes to provide a higher output voltage. When the battery 32 is nearly full or needs to be charged with a lower current, the control module 31 reduces the switching frequency to reduce heat generation and protect the battery 32. In addition, the control module 31 can also monitor the entire charging process to prevent overcharging, over-discharging, and overheating, ensuring the safety of charging.

[0070] In the above example, the boost circuit can not only adapt to different charging requirements but also achieve intelligent charging management. This integrated charging solution provides an efficient, flexible, and safe charging method for smart terminals, meeting the user's needs for fast charging and battery health protection.

[0071] In one embodiment, the boost circuit further includes: a first capacitor; one end of the first capacitor is connected to the connection point between the second switching tube and the third switching tube, and the other end of the first capacitor is connected to the connection point between the fourth switching tube and the fifth switching tube, for storing the corresponding power supply voltage to charge the battery 32.

[0072] Optionally, in the design of the boost circuit, the first capacitor plays a crucial role. It is connected to the connection point between the second switching tube and the third switching tube and the connection point between the fourth switching tube and the fifth switching tube. Such a configuration enables the first capacitor to store electrical energy when the boost circuit is operating. When the second switching tube and the fifth switching tube are conducting, electrical energy flows into the first capacitor for storage; when the third switching tube and the fourth switching tube are conducting, the electrical energy stored in the first capacitor is released and a required high voltage is provided to the battery 32 through the output terminal of the boost circuit.

[0073] Optionally, this charging and discharging process of the first capacitor is the key mechanism for the boost circuit to achieve voltage increase. It enables the input lower voltage to be accumulated in the capacitor and raised to a higher voltage level, and then delivered to the battery 32. The role of the first capacitor in the boost circuit is not only to store and release electrical energy, but it also helps to smooth the output voltage, reduce voltage fluctuations, and ensure that the electrical energy delivered to the battery 32 is both stable and efficient. This is crucial for protecting the battery 32 from voltage spikes and noise, and also helps to improve the efficiency and reliability of the entire charging system.

[0074] By precisely controlling the conduction and disconnection timing of the switching transistor, the control module 31 can adjust the charge and discharge rate of the first capacitor, thereby controlling the output voltage of the boost circuit. In one example, the first capacitor can be a flying capacitor. This control mechanism allows the charging system to dynamically adjust the charging strategy according to different charging requirements and battery states, realizing a more intelligent and personalized charging process.

[0075] Optionally, the introduction of the first capacitor also helps to reduce energy loss during the charging process because it can reduce the switching loss caused by the frequent switching of the switching transistor. By optimizing the design of the boost circuit, including reasonably selecting the capacitance and type of the first capacitor, the charging efficiency can be further improved, the charging time can be shortened, and the service life of the battery 32 can be extended.

[0076] In one embodiment, the buck circuit includes: a sixth switching transistor, a seventh switching transistor, and an eighth switching transistor; one end of the sixth switching transistor is connected to the second input terminal, the boost circuit, and the other end of the first switching transistor Q1, and the other end of the sixth switching transistor is connected to one end of the seventh switching transistor and one end of the eighth switching transistor; the other end of the seventh switching transistor is grounded; the other end of the eighth switching transistor is connected to the battery 32; the control terminals of the sixth switching transistor, the seventh switching transistor, and the eighth switching transistor are connected to the control module 31.

[0077] Optionally, the buck circuit includes a sixth switching transistor, a seventh switching transistor, and an eighth switching transistor, which work to achieve voltage reduction. One end of the sixth switching transistor is connected to the second input terminal, the boost circuit, and the other end of the first switching transistor Q1, which means that when the first switching transistor Q1 conducts, the voltage can go from the first input terminal to the buck circuit. The other end of the sixth switching transistor is connected to one end of the seventh switching transistor and the eighth switching transistor, forming a switching network. Optionally, the sixth switching transistor, the seventh switching transistor, and the eighth switching transistor can be controllable switching devices such as Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) or Insulate-Gate Bipolar Transistor (IGBT), which are not limited herein.

[0078] Optionally, the other end of the seventh switching transistor is grounded, providing a stable reference point for the circuit, while the other end of the eighth switching transistor is directly connected to the battery 32, responsible for delivering the reduced voltage to the battery 32. The control terminals of these three switching transistors are all connected to the control module 31, enabling the control module 31 to dynamically adjust the working mode of the switching transistors according to the voltage and charging state of the battery 32 to achieve the best charging effect.

[0079] Optionally, the control module 31 adjusts the operating state of the buck circuit by controlling the conduction and disconnection of the sixth, seventh, and eighth switching transistors. In the slow charging mode, the control module 31 turns on the buck circuit and precisely controls the switching frequency and duty cycle of the switching transistors to achieve precise regulation of the output voltage to meet the charging requirements of the battery. Optionally, when the battery 32 needs to be charged at a lower voltage, the control module 31 can reduce the switching frequency of the switching transistors to reduce heat generation and protect the battery 32.

[0080] In the above example, the buck circuit can not only adapt to different charging requirements but also achieve intelligent charging management. This integrated charging solution provides an efficient, flexible, and safe charging method for smart terminals, meeting the user's needs for fast charging and battery health protection.

[0081] In one embodiment, the wireless unit 301 includes: a low-dropout regulator and a rectifier circuit; the rectifier circuit is connected to the first input terminal and the low-dropout regulator, the output terminal of the low-dropout regulator is connected to one end of the first switching transistor Q1, and the other end of the low-dropout regulator is grounded; the rectifier circuit is used to convert the wireless power supply voltage into a DC power supply voltage and transmit it to the low-dropout regulator, and the low-dropout regulator is used to regulate the DC power supply voltage.

[0082] Optionally, the wireless unit 301 is designed to adapt to the wireless charging mode and includes two key parts: a low-dropout regulator and a rectifier circuit. The function of the rectifier circuit is to convert the wireless power supply voltage received from the first input terminal (usually an AC or high-frequency pulse signal) into a DC power supply voltage. Optionally, the rectifier circuit includes four diodes, and the unidirectional conductivity of the diodes is used to convert the positive and negative alternating voltage into a DC voltage. This step is necessary because wireless charging technology usually relies on the principle of electromagnetic induction, which may generate non-DC power signals. The rectified DC voltage is then transmitted to the low-dropout regulator.

[0083] Optionally, the low-dropout regulator is a special linear regulator that can operate at a very low input-output voltage difference and provide a stable output voltage. The output terminal of the low-dropout regulator is connected to one end of the first switching transistor Q1, which means that the stable voltage regulated by the low-dropout regulator can be effectively transmitted to the battery 32. The other end of the low-dropout regulator is grounded, providing a stable reference voltage for the circuit. This design ensures that even when the input voltage fluctuates, the voltage output to the battery 32 can remain stable, thereby protecting the battery 32 and optimizing the charging efficiency.

[0084] Optionally, in the wireless charging mode, the control module 31 controls the first switching transistor Q1 to conduct, allowing the DC power supply voltage regulated by the low dropout regulator to flow to the battery 32, thereby achieving wireless charging. The combination of the rectifier circuit and the low dropout regulator not only ensures voltage stability but also improves the charging efficiency and reliability of the entire system.

[0085] Optionally, the rectifier circuit converts the wireless power supply voltage into a DC voltage, and the low dropout regulator further regulates this voltage to ensure it is suitable for charging the battery 32. This two-stage regulation mechanism helps reduce voltage fluctuations and noise, improving charging safety. In addition, the low noise characteristic of the low dropout regulator is particularly important for maintaining voltage stability during the charging process, which helps extend the service life of the battery 32.

[0086] Through the solution of this example, the wireless unit can adapt to different wireless charging environments and provide a stable and reliable charging voltage. The intelligent control of the control module further optimizes the charging process, ensuring charging efficiency and battery safety. This integrated wireless charging solution provides a flexible, efficient, and safe wireless charging method for smart terminals, meeting users' needs for wireless charging.

[0087] In one embodiment, the wireless unit 301 further includes: a second capacitor; the second capacitor is connected in parallel with the rectifier circuit and the low dropout regulator for protecting the circuit.

[0088] Optionally, in the design of the wireless unit 301, the introduction of the second capacitor is to enhance the stability and reliability of the circuit. The second capacitor is connected in parallel with the rectifier circuit and the low dropout regulator, playing multiple roles. The second capacitor helps smooth the DC voltage output by the rectifier circuit, reducing voltage ripple and transient fluctuations. These fluctuations may be caused by the instability of the wireless power supply or switching actions during the rectification process, and the second capacitor suppresses these fluctuations by storing and releasing charges, thereby providing a more stable voltage to the low dropout regulator.

[0089] Optionally, the second capacitor helps improve the anti-interference ability of the circuit, reduces the impact of external electromagnetic interference on the charging circuit, and protects the circuit from damage. In the above example, the second capacitor can improve the stability and charging efficiency of the circuit, ensuring the safety and reliability of the wireless charging process.

[0090] In one embodiment, the charging circuit further includes: an inductor; one end of the inductor is connected to the switching module 30, and the other end of the inductor is connected to the battery 32 for storing the corresponding power supply voltage to charge the battery 32.

[0091] Optionally, the charging circuit further includes an inductor, which is connected to the switching module 30 and the battery 32, forming an efficient energy transmission and conversion system. One end of the inductor is connected to the switching module 30, which is responsible for controlling the flow of electrical energy according to the current charging mode, and the other end of the inductor is directly connected to the battery 32.

[0092] Optionally, the main function of the inductor is to store the power supply voltage and release this energy when needed. During the charging process, the inductor stores energy through electromagnetic induction. When the battery 32 needs to be charged, this stored energy is converted into current and delivered to the battery 32. This energy storage and release process helps to smooth the charging current, reduce voltage fluctuations, thereby improving the charging efficiency and protecting the battery 32 from being affected.

[0093] Through the solution of this example, the entire charging system can manage electrical energy more efficiently, improve the charging speed, and at the same time ensure the safety and reliability of the charging process.

[0094] In the charging circuit provided in this embodiment, the charging circuit includes a switching module, a control module, and a battery; the switching module includes a first input terminal and a second input terminal, the first input terminal is used to receive a wireless power supply voltage, and the second input terminal is used to receive a wired power supply voltage; the battery is connected to the switching module; the control module is connected to the switching module and is used to control the switching module to enter the corresponding charging mode according to the current charging mode to charge the battery; wherein, the charging modes include a wired mode and a wireless mode. In the solution of this application, by integrating the wired charging mode and the wireless charging mode into the same switching module, seamless switching and collaborative work of different charging methods are realized. This integrated design reduces the number of peripheral devices required for the traditional separate design, significantly saves the circuit board area, and reduces the hardware cost.

[0095] Second Embodiment

[0096] Figure 5 It is a schematic structural diagram of a charging circuit provided for this example. As Figure 5 shown, the charging circuit includes: a switching module 30 (i.e., a charging mode switching IC), a control module 31, a battery 32, and an inductor L; the charging modes include: a wired fast charging mode, a wired slow charging mode, a wireless fast charging mode, and a wireless slow charging mode;

[0097] Optionally, the switching module 30 includes a first input terminal and a second input terminal. The first input terminal receives a wireless power supply voltage, and the second input terminal receives a wired power supply voltage. The switching module 30 includes: a wireless unit, a charging unit, and a first switching transistor Q1. Among them, the charging unit includes a boost circuit and a buck circuit. The boost circuit includes a second switching transistor Q2, a third switching transistor Q3, a fourth switching transistor Q4, a fifth switching transistor Q5, and a first capacitor (flying capacitor) CFLY connected in series in sequence. The buck circuit includes a sixth switching transistor Q6, a seventh switching transistor Q7, and an eighth switching transistor Q8. The wireless unit includes a rectification circuit 3011 (i.e., four diodes), a low dropout regulator 3012, and a second capacitor C2.

[0098] In one embodiment, in the wired fast charging mode, the control module 31 controls the first switching transistor Q1 to be turned off, the sixth switching transistor Q6, the seventh switching transistor Q7, and the eighth switching transistor Q8 are all turned off. First, the second switching transistor Q2 and the fifth switching transistor Q5 are turned on, and the wired power supply voltage is input from the second input terminal to the first capacitor (flying capacitor) CFLY for charging. After completion, the second switching transistor Q2 and the fifth switching transistor Q5 are turned off, and the third switching transistor Q3 and the fourth switching transistor Q4 are turned on to transfer the electrical energy in the first capacitor (flying capacitor) CFLY to the battery 32 for charging.

[0099] In one embodiment, in the wired slow charging mode, the control module 31 controls the first switching transistor Q1 to be turned off, the second switching transistor Q2, the third switching transistor Q3, the fourth switching transistor Q4, and the fifth switching transistor Q5 are all turned off. The sixth switching transistor Q6 and the seventh switching transistor Q7 are alternately turned on, and the eighth switching transistor Q8 is turned on. The wired power supply voltage is input from the second input terminal to the inductor L for charging, and after completion, it is transferred to the battery 32 for charging.

[0100] In one embodiment, in the wireless fast charging mode, the control module 31 controls the first switching transistor Q1 to be turned on, the sixth switching transistor Q6, the seventh switching transistor Q7, and the eighth switching transistor Q8 are all turned off. The wireless power supply voltage input from the first input terminal passes through the rectification circuit 3011, the second capacitor C2, and the low dropout regulator 3012. First, the second switching transistor Q2 and the fifth switching transistor Q5 are turned on to transfer the electrical energy to the first capacitor (flying capacitor) CFLY for charging. After completion, the second switching transistor Q2 and the fifth switching transistor Q5 are turned off, and the third switching transistor Q3 and the fourth switching transistor Q4 are turned on to transfer the electrical energy in the first capacitor (flying capacitor) CFLY to the battery 32 for charging.

[0101] In one embodiment, in the wireless slow charging mode, the control module 31 controls the first switching transistor Q1 to conduct, and the second switching transistor Q2, the third switching transistor Q3, the fourth switching transistor Q4, and the fifth switching transistor Q5 are all turned off. The wireless power supply voltage input at the first input terminal passes through the rectifier circuit 3011, the second capacitor C2, and the low-dropout regulator 3012. The sixth switching transistor Q6 and the seventh switching transistor Q7 conduct alternately, and the eighth switching transistor Q8 conducts to transmit electrical energy to the inductor L for charging, and then transmits it to the battery 32 for charging after completion.

[0102] Optionally, for the charging circuit, reference can be made to the content of the foregoing embodiment. In summary, the charging circuit provided in this example integrates the wired charging mode and the wireless charging mode into the same switching module, achieving seamless switching and collaborative work of different charging methods. This integrated design reduces the number of peripheral devices required for the traditional separate design, significantly saves the circuit board area, and reduces the hardware cost.

[0103] Third Embodiment

[0104] This application also provides an intelligent terminal, which includes the charging circuit in any of the foregoing embodiments. The charging circuit has been described in detail in the foregoing embodiments and will not be elaborated herein.

[0105] Figure 6 For a schematic diagram of the structure of an example intelligent terminal, as Figure 6 shown, in one embodiment, the intelligent terminal further includes: a charging coil, a magnetic induction wireless circuit, a magnetic resonance wireless circuit, and a radio wave type circuit; the magnetic induction wireless circuit, the magnetic resonance wireless circuit, and the radio wave type circuit are connected in parallel to the charging coil and the switching module 30 for wireless charging.

[0106] Optionally, in the intelligent terminal, in order to achieve an efficient wireless charging function, the design includes a charging coil and multiple wireless circuits, including a magnetic induction wireless circuit, a magnetic resonance wireless circuit, and a radio wave type circuit. These circuits are coupled in parallel to the charging coil and the switching module 30, jointly constituting the core part of the wireless charging system.

[0107] Optionally, the charging coil is responsible for electromagnetic coupling with the transmitting coil of the wireless charging base during wireless charging, thereby receiving the electromagnetic energy transmitted by the base. The magnetic induction wireless circuit uses the principle of electromagnetic induction to transmit energy, and it is suitable for short-distance and high-efficiency wireless charging scenarios. The magnetic resonance wireless circuit enhances the energy transmission efficiency through the resonance phenomenon, and it can provide more stable wireless charging within a certain distance. The radio wave type circuit realizes wireless energy transmission by transmitting and receiving radio waves, and this method is suitable for wireless charging applications over longer distances.

[0108] Optionally, the parallel design of these radio circuits enables the smart terminal to flexibly select the most suitable wireless charging mode according to different charging environments and requirements. Optionally, the internal circuit structures of the magnetic induction wireless circuit, the magnetic resonance wireless circuit, and the radio wave type circuit are the same as those in the prior art and will not be elaborated herein.

[0109] Through this diversified radio circuit design, the wireless charging system of the smart terminal not only improves the charging flexibility and adaptability but also optimizes the charging efficiency and user experience.

[0110] In one embodiment, still as Figure 6 shown, the smart terminal further includes: a charging electrode and an electric field coupling type wireless circuit; the electric field coupling type wireless circuit is coupled to the charging electrode and the switching module 30 for wireless charging.

[0111] Optionally, the electric field coupling type wireless charging technology integrated in the smart terminal is implemented through the charging electrode and the electric field coupling type wireless circuit, providing a non-contact charging solution. As a key component of electric field coupling, the design and layout of the charging electrode are crucial for wireless charging efficiency and compatibility. The electric field coupling type wireless circuit is coupled to the charging electrode and the switching module 30, enabling the device to transfer energy from the charging base to the smart terminal through the electric field without physical connection.

[0112] In the above example, the advantage of the electric field coupling type wireless charging technology lies in its relatively loose alignment requirement, which means that users do not need to align the charging area very precisely when placing the device, thus providing greater convenience and flexibility.

[0113] Optionally, the smart terminal can be implemented in various forms. For example, the smart terminal described in this application can include mobile terminals such as mobile phones, tablet computers, laptop computers, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc.

[0114] In the subsequent description, mobile terminals will be taken as examples for illustration. Those skilled in the art will understand that, except for components specifically for mobile purposes, the structure according to the embodiments of this application can also be applied to fixed-type terminals.

[0115] Please refer to Figure 7, which is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application. The mobile terminal 700 may include: an RF (Radio Frequency) unit 701, a WiFi module 702, an audio output unit 703, an A / V (audio / video) input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, and a power supply 711, etc. Those skilled in the art can understand that Figure 7 the mobile terminal structure shown in

[0116] does not limit the mobile terminal. The mobile terminal may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements. Figure 7 The following specifically introduces each component of the mobile terminal:

[0117] The RF unit 701 can be used for receiving and sending signals during information reception or call processes. Specifically, after receiving the downlink information of the base station, it is given to the processor 710 for processing; in addition, the uplink data is sent to the base station. Generally, the RF unit 701 includes but is not limited to antennas, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. In addition, the RF unit 701 can also communicate with the network and other devices through wireless communication. The above wireless communication can use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (CodeDivision Multiple Access 2000), WCDMA (Wideband Code DivisionMultiple Access), TD-SCDMA (Time Division-Synchronous CodeDivision Multiple Access), FDD-LTE (Frequency DivisionDuplexing - Long Term Evolution), TDD-LTE (Time DivisionDuplexing-Long Term Evolution), 5G, and 6G, etc.

[0118] WiFi belongs to short - range wireless transmission technology. The mobile terminal can help users send and receive emails, browse the web, and access streaming media through the WiFi module 702. It provides users with wireless broadband Internet access. Although Figure 7 the WiFi module 702 is shown, it can be understood that it does not belong to the essential components of the mobile terminal and can be completely omitted within the scope of not changing the essence of this application as needed.

[0119] The audio output unit 703 can convert the audio data received by the radio frequency unit 701 or the WiFi module 702 or stored in the memory 709 into an audio signal and output it as sound when the mobile terminal 700 is in call signal reception mode, call mode, recording mode, voice recognition mode, broadcast reception mode, etc. Moreover, the audio output unit 703 can also provide audio output related to specific functions executed by the mobile terminal 700 (such as call signal reception sound, message reception sound, etc.). The audio output unit 703 can include a speaker, a receiver, a buzzer, etc.

[0120] The A / V input unit 704 is used to receive audio or video signals. The A / V input unit 704 can include a Graphics Processing Unit (GPU) 7041 and a microphone 7042. The graphics processor 7041 processes the image data of still pictures or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 706. The image frames processed by the graphics processor 7041 can be stored in the memory 709 (or other storage media) or transmitted via the radio frequency unit 701 or the WiFi module 702. The microphone 7042 can receive sounds (audio data) via the microphone 7042 in call mode, recording mode, voice recognition mode, etc., and can process such sounds into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to the mobile communication base station via the radio frequency unit 701 in the case of call mode. The microphone 7042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) the noise or interference generated during the reception and transmission of audio signals.

[0121] The mobile terminal 700 further includes at least one sensor 705, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 7061 according to the brightness of the ambient light, and the proximity sensor can turn off the display panel 7061 and / or the backlight when the mobile terminal 700 is moved to the ear. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary, and can be used in applications for identifying the posture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for other sensors that the mobile phone can also be configured with, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., they will not be elaborated here.

[0122] The display unit 706 is used to display information input by the user or information provided to the user. The display unit 706 may include a display panel 7061, and the display panel 7061 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.

[0123] The user input unit 707 can be used to receive input digital or character information, and generate key signal inputs related to the user settings and function controls of the mobile terminal. Optionally, the user input unit 707 may include a touch panel 7071 and other input devices 7072. The touch panel 7071, also known as a touch screen, can collect touch operations of the user on or near it (such as operations of the user using a finger, a stylus, or any suitable object or accessory on or near the touch panel 7071), and drive the corresponding connection device according to a pre-set program. The touch panel 7071 can include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the touch position of the user and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the processor 710, and can receive commands sent by the processor 710 and execute them. In addition, at least two types such as resistive, capacitive, infrared, and surface acoustic wave can be used to implement the touch panel 7071. In addition to the touch panel 7071, the user input unit 707 may further include other input devices 7072. Optionally, the other input devices 7072 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, power on / off keys, etc.), a trackball, a mouse, a joystick, etc., and specific details are not limited here.

[0124] Optionally, the touch panel 7071 may cover the display panel 7061. After the touch panel 7071 detects a touch operation on or near it, it is transmitted to the processor 710 to determine the type of touch event. Subsequently, the processor 710 provides a corresponding visual output on the display panel 7061 according to the type of touch event. Although in Figure 7 , the touch panel 7071 and the display panel 7061 are implemented as two independent components to realize the input and output functions of the mobile terminal, but in some embodiments, the touch panel 7071 and the display panel 7061 may be integrated to realize the input and output functions of the mobile terminal, and the specific details are not limited here.

[0125] The interface unit 708 serves as an interface through which at least one external device can be connected to the mobile terminal 700. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headset port, and so on. The interface unit 708 can be used to receive inputs from external devices (such as data information, power, etc.) and transmit the received inputs to one or more components within the mobile terminal 700 or can be used to transmit data between the mobile terminal 700 and external devices.

[0126] The memory 709 can be used to store software programs and various data. The memory 709 mainly includes a program storage area and a data storage area. Optionally, the program storage area can store an operating system, applications required for at least one function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the mobile phone (such as audio data, phone book, etc.). In addition, the memory 709 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices.

[0127] The processor 710 is the control center of the mobile terminal, connecting various parts of the entire mobile terminal using various interfaces and lines. By running or executing software programs and / or modules stored in the memory 709, and by calling data stored in the memory 709, it performs various functions of the mobile terminal and processes data, thereby monitoring the mobile terminal as a whole. The processor 710 may include one or more processing units; preferably, the processor 710 may integrate an application processor and a modem processor. Optionally, the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor may not be integrated into the processor 710 either.

[0128] The mobile terminal 700 may further include a power source 711 (such as a battery) for powering each component. Preferably, the power source 711 may be logically connected to the processor 710 through a power management system, so as to manage functions such as charging, discharging, and power consumption management through the power management system.

[0129] Although Figure 7 not shown, the mobile terminal 700 may further include a Bluetooth module, etc., which will not be elaborated here. It can be understood that the above scenarios are only examples and do not constitute a limitation on the application scenarios of the technical solutions provided by the embodiments of the present application. The technical solutions of the present application can also be applied to other scenarios. For example, as known to those of ordinary skill in the art, with the evolution of the system architecture and the emergence of new service scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0130] The serial numbers of the embodiments of the present application are only for description and do not represent the superiority or inferiority of the embodiments.

[0131] The units in the devices of the embodiments of the present application can be combined, divided, and deleted according to actual needs.

[0132] In the present application, for the description of the same or similar term concepts, technical solutions, and / or application scenarios, generally only the first occurrence is described in detail. When it appears repeatedly later, for the sake of brevity, it is generally not described again. When understanding the technical solutions and other contents of the present application, for the same or similar term concepts, technical solutions, and / or application scenarios that are not described in detail later, reference can be made to the relevant detailed descriptions before.

[0133] In the present application, the descriptions of the various embodiments have their own emphases. For the parts not elaborated or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0134] The technical features of the technical solutions of the present application can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope recorded in the present application.

[0135] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present application, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A charging circuit, characterized in that: include: Switching module, control module and battery; The switching module comprises a first input terminal and a second input terminal, the first input terminal is used to receive a wireless power supply voltage, and the second input terminal is used to receive a wired power supply voltage; The battery is connected to the switching module; The control module is connected to the switching module and is used to control the switching module to enter a corresponding charging mode according to a current charging mode so as to charge the battery; wherein the charging mode includes a wired mode and a wireless mode.

2. The charging circuit according to claim 1, characterized in that: The switching module includes a wireless unit, a charging unit and a first switch tube; The input end of the wireless unit is connected to the first input end, and the input end of the charging unit is connected to the second input end; One end of the first switch tube is connected to the wireless unit, the other end of the first switch tube is connected to the charging unit, and the control end of the first switch tube is connected to the control module; The control module is further used to control the first switch tube to be disconnected in the wired mode; and / or to control the first switch tube to be turned on in the wireless mode.

3. The charging circuit according to claim 2, characterized in that: The charging unit includes a boost circuit and a buck circuit; The input end of the boost circuit is connected to the second input end and the other end of the first switch tube, and the output end of the boost circuit is connected to the battery; The input end of the step-down circuit is connected to the second input end, the step-up circuit, and the other end of the first switch tube, and the output end of the step-down circuit is connected to the battery.

4. The charging circuit according to claim 3, characterized in that: The wired mode includes a wired fast charging mode and a wired slow charging mode; the wireless mode includes a wireless fast charging mode and a wireless slow charging mode, and the control module is further configured to include at least one of the following: In the wired fast charging mode, controlling the boost circuit to be turned on, and controlling the buck circuit and the first switch tube to be turned off, so as to enter the wired fast charging mode; In the wired slow charging mode, controlling the step-down circuit to be turned on, and controlling the step-up circuit and the first switch tube to be turned off, so as to enter the wired slow charging mode; In the wireless fast charging mode, controlling the first switch tube and the boost circuit to be turned on, and controlling the buck circuit to be turned off, so as to enter the wireless fast charging mode; In the wireless slow charging mode, the first switch tube and the buck circuit are controlled to be turned on, and the boost circuit is controlled to be turned off to enter the wireless slow charging mode.

5. The charging circuit according to claim 3, characterized in that: The boost circuit comprises a second switch tube, a third switch tube, a fourth switch tube and a fifth switch tube connected in series; One end of the second switch tube is connected to the second input end and the other end of the first switch tube, the other end of the fifth switch tube is grounded, and the connection point between the third switch tube and the fourth switch tube is connected to the battery; Control ends of the second switch tube, the third switch tube, the fourth switch tube and the fifth switch tube are connected to the control module.

6. The charging circuit according to claim 5, characterized in that: The boost circuit further includes a first capacitor; One end of the first capacitor is connected to the connection point between the second switch tube and the third switch tube, and the other end of the first capacitor is connected to the connection point between the fourth switch tube and the fifth switch tube, and is used to store the corresponding power supply voltage to charge the battery; and / or, The step-down circuit includes a sixth switch tube, a seventh switch tube and an eighth switch tube; One end of the sixth switch tube is connected to the second input end, the boost circuit and the other end of the first switch tube, and the other end of the sixth switch tube is connected to one end of the seventh switch tube and one end of the eighth switch tube; the other end of the seventh switch tube is grounded; and the other end of the eighth switch tube is connected to the battery; The control ends of the sixth switch tube, the seventh switch tube, and the eighth switch tube are connected to the control module.

7. The charging circuit according to any one of claims 2 to 6, characterized in that: The wireless unit includes a low voltage dropout regulator and a rectifier circuit; The rectifier circuit is connected to the first input terminal and the low voltage dropout regulator, the output terminal of the low voltage dropout regulator is connected to one terminal of the first switch tube, and the other terminal of the low voltage dropout regulator is grounded; The rectifier circuit is used to convert the wireless power supply voltage into a DC power supply voltage and transmit it to the low voltage dropout regulator, and the low voltage dropout regulator is used to regulate the DC power supply voltage.

8. An intelligent terminal, characterized in that: The charging circuit comprises the charging circuit as claimed in any one of claims 1 to 7.

9. The intelligent terminal according to claim 8, characterized in that: The intelligent terminal further comprises: a charging coil, a magnetic induction wireless circuit, a magnetic co-broadcast wireless circuit and a radio wave circuit; The magnetic induction wireless circuit, the magnetic co-casting wireless circuit and the radio wave circuit are coupled in parallel to the charging coil and the switching module for wireless charging.

10. The intelligent terminal according to claim 8, characterized in that: The intelligent terminal further comprises: a charging electrode and an electric field coupling type wireless circuit; The electric field coupling type wireless circuit is coupled to the charging electrode and the switching module for wireless charging.

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