Charging Circuit, Terminal Device, and Charging System

Abstract

An embodiment of the present application provides a charging circuit, a terminal device, and a charging system. The charging circuit includes: a circuit board, an AC-DC conversion circuit, and a connector; wherein, a first port of the circuit board is connected to a first end of the connector; the circuit board is configured to restart according to the level of the first port; a second port of the circuit board is connected to one end of the AC-DC conversion circuit; the AC-DC conversion circuit is configured to convert the alternating current input by the charger into direct current; the other end of the AC-DC conversion circuit is connected to the connector; and the connector is configured to be connected to the charger. The embodiment of the present application can not only complete the charging function, but also trigger the Reset pin to complete a restart under certain conditions.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of circuit technologies, and in particular, to a charging circuit, a terminal device, and a charging system. Background Art

[0002] In recent years, with the trend of product miniaturization, especially for some wearable devices such as smart bracelets, the physical buttons for power off or restart have been removed.

[0003] When software failures occur in the product, problems such as lag, freeze, and communication interruption may occur. The above problems can generally be solved by a hardware restart. Since there is no physical button for power off or restart, generally, only when the product battery runs out of power can the restart be completed. However, waiting for the product to run out of power will seriously affect the efficiency of problem-solving. Summary of the Invention

[0004] The embodiments of the present application provide a charging circuit, a terminal device, and a charging system to improve the efficiency of problem-solving.

[0005] In a first aspect, the embodiments of the present application provide a charging circuit, including:

[0006] A circuit board, an AC-DC conversion circuit, and a connector;

[0007] Wherein, a first port of the circuit board is connected to a first end of the connector;

[0008] The circuit board is configured to implement a restart according to the level of the first port;

[0009] A second port of the circuit board is connected to one end of the AC-DC conversion circuit; the AC-DC conversion circuit is configured to convert the alternating current input by the charger into direct current;

[0010] The other end of the AC-DC conversion circuit is connected to the connector; the connector is configured to be connected to the charger.

[0011] In a possible implementation manner, the AC-DC conversion circuit is a rectifier.

[0012] In a possible implementation manner, the rectifier includes: a first diode, a second diode, a third diode, and a fourth diode;

[0013] The positive electrode of the first diode is connected to the positive electrode of the connector, and the negative electrode of the first diode is connected to a first branch of the second port of the circuit board;

[0014] The positive electrode of the second diode is connected to the negative electrode of the connector, and the negative electrode of the second diode is connected to the negative electrode of the first diode;

[0015] The negative electrode of the third diode is connected to the positive electrode of the connector, and the positive electrode of the third diode is connected to the second branch of the second port of the circuit board;

[0016] The positive electrode of the fourth diode is connected to the positive electrode of the third diode, and the negative electrode of the fourth diode is connected to the positive electrode of the second diode.

[0017] In a possible implementation, the first port of the circuit board is a reset pin.

[0018] In a possible implementation, the other end of the AC-DC conversion circuit is respectively connected to the first end and the second end of the connector. In a possible implementation, the circuit board is a printed circuit board (PCB).

[0019] In a possible implementation, the connector is a spring pin.

[0020] In a possible implementation, the first end of the connector is the positive electrode; the second end of the connector is the negative electrode.

[0021] In a second aspect, an embodiment of the present application provides a terminal device, including:

[0022] The charging circuit as described in any one of the first aspect, and a housing;

[0023] Wherein, the charging circuit is arranged in the housing.

[0024] In a third aspect, an embodiment of the present application provides a charging system, including:

[0025] The terminal device as described in any one of the second aspect and a charging base;

[0026] Wherein, the charging base has a charging port, and the charging port is used to connect to the connector of the terminal device.

[0027] The charging circuit, the terminal device and the charging system provided by the embodiments of the present application connect an AC-DC conversion circuit between the circuit board and the connector, and connect the first port of the circuit board to the positive electrode of the connector. When the polarity of the connector is different from that of the charging base, the first port of the circuit board is connected to the positive electrode of the connector, and at this time, the positive electrode of the connector contacts the negative electrode of the charging base. Therefore, the first port of the circuit board is at a low level, and the reset and restart of the circuit board can be realized. Due to the existence of the AC-DC conversion circuit, the charging function can be realized whether the polarity of the connector is the same as or different from that of the charging base. Description of the Drawings

[0028] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0029] Figure 1 is a schematic diagram of a charging structure provided in the related art;

[0030] Figure 2 is a schematic diagram of the structure of a charging circuit provided in an embodiment of the present application;

[0031] Figure 3 is a schematic diagram of the principle of a charging circuit provided in an embodiment of the present application;

[0032] Figure 4 is a schematic diagram of the principle of a charging circuit provided in another embodiment of the present application;

[0033] Figure 5 is a schematic diagram of the principle of a charging circuit provided in yet another embodiment of the present application;

[0034] Figure 6 is a block diagram of a terminal device shown in an embodiment of the present application.

[0035] Through the above-mentioned accompanying drawings, specific embodiments of the present disclosure have been shown, and there will be more detailed descriptions hereinafter. These accompanying drawings and the written descriptions are not intended to limit the scope of the concept of the present disclosure in any way, but to illustrate the concept of the present disclosure to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0036] Exemplary embodiments will be described in detail here, and 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 disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0037] The terms "including" and "having" and any variations thereof in the specification, claims and drawings of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or devices.

[0038] In the description and claims of this application and the above-mentioned drawings, the terms "first", "second", etc. (if any) are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this application described herein, for example, can be implemented in an order other than those illustrated or described herein.

[0039] In the embodiments of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] First, the application scenarios involved in this application are introduced:

[0041] The charging circuit provided by the embodiments of this application is applied to a terminal device, and the device can be restarted without restarting the physical button.

[0042] The terminal device in the embodiments of this application may include, but is not limited to: terminal devices such as mobile phones, tablet computers, wearable devices, and wireless routers.

[0043] In the related art, in order to achieve product miniaturization, especially for some wearable devices, such as smart bracelets, the physical buttons for shutdown or restart are removed.

[0044] When a software failure occurs in the product, faults such as jamming, freezing, and communication interruption may occur. The above problems can generally be solved by a hardware restart. Since there is no physical button for shutdown or restart, the product can only be violently disassembled or waited for the product battery to run out of power to complete the restart. Violent disassembly will cause damage to the product, and waiting for the product to run out of power will seriously affect the efficiency of problem-solving.

[0045] Especially during the product development process, the initial software is not perfect enough, and it is very easy for a large number of devices to freeze during the testing process. Software restart is only applicable to the situation where the system is running normally and it is difficult to solve complex situations such as system crashes. Therefore, there is an urgent need for a hardware restart solution.

[0046] Figure 1 For the existing smart bracelet structure, only the charging electrodes are exposed on the product, there are no other physical buttons, and there is no physical structure for triggering a restart. However, generally, the circuit board has a Reset pin. For the convenience of analyzing the design principle, attach Figure 1Separate the positive and negative poles of the middle connector, as well as the Reset pin, from the PCB circuit board. In the charging circuit of the embodiment of the present application, an AC-DC conversion circuit is connected between the circuit board and the connector, and the Reset pin of the circuit board is connected to the positive pole of the connector. When the polarity of the connector is different from that of the charging base, Reset is connected to the positive pole of the connector, and at this time, the positive pole of the connector contacts the negative pole of the charging base. Therefore, Reset is at a low level to achieve reset and restart.

[0047] The technical solution of the present 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.

[0048] Figure 2 is a schematic structural diagram of the charging circuit provided by an embodiment of the present application. As Figure 2 、 Figure 3 shown, the charging circuit provided in this embodiment includes:

[0049] a circuit board, an AC-DC conversion circuit, and a connector;

[0050] Among them, the first port of the circuit board is connected to the first end of the connector;

[0051] The circuit board is used to achieve restart according to the level of the first port;

[0052] The second port of the circuit board is connected to one end of the AC-DC conversion circuit; the AC-DC conversion circuit is used to convert the alternating current input by the charger into direct current;

[0053] The other end of the AC-DC conversion circuit is connected to the connector; the connector is used to connect to the charger.

[0054] Specifically, in the embodiment of the present application, the exposed connector is utilized, and the first end of the connector is connected to the first port of the circuit board. Restart is achieved according to the level of the first port of the circuit board, which can not only complete the charging function but also trigger the first port, that is, the Reset pin, to complete restart under certain conditions.

[0055] As shown in the appendix Figure 2As shown, an AC-DC converter is inserted between the second end of the circuit board and the connector. For charging, the connector does not need to distinguish between polarities at this time, and can supply power to the circuit board normally. And, the first port of the circuit board is connected to the positive pole of the connector. When the polarity of the connector is the same as that of the charging base, since the first port of the circuit board is at a high level, it has no effect on the circuit board; when the polarity of the connector is opposite to that of the charging base, that is, when the charging base and the connector are reversely connected, since the first port of the circuit board is at a low level, the circuit board is restarted.

[0056] In a possible implementation, the first port of the circuit board is a reset pin, that is, a Reset pin.

[0057] Among them, the connection between the first port of the circuit board and the first end of the connector can be a direct connection or an indirect connection through some devices, and the embodiments of the present application do not limit this.

[0058] The charging circuit of this embodiment connects an AC-DC conversion circuit between the circuit board and the connector, and connects the first port of the circuit board to the positive pole of the connector. When the polarity of the connector is different from that of the charging base, the first port of the circuit board is connected to the positive pole of the connector, and at this time, the positive pole of the connector contacts the negative pole of the charging base, so the first port of the circuit board is at a low level, and the reset and restart of the circuit board can be realized. Due to the AC-DC conversion circuit, the charging function can be realized whether the polarity of the connector is the same as or different from that of the charging base.

[0059] In a possible implementation, the connector is a spring pin Pogo Pin.

[0060] Pogo Pin is a precision connector applied to electronic products and plays a connecting role.

[0061] Optionally, Pogo Pin is a spring-type probe formed by riveting and pre-pressing three basic components, namely a needle shaft, a spring, and a needle tube, through a precision instrument, and it has a precision spring structure inside. The tip of the needle has a sharp needle, a grab needle, a round head needle, a knife-shaped needle, etc. Pogo Pin is generally applied to precision connections in electronic products such as mobile phones, portable electronic devices, communications, automobiles, medical treatment, and aerospace, which can improve the corrosion resistance, stability, and durability of these connectors. Since Pogo Pin is a very delicate probe, it can reduce the weight and the appearance volume of the connector when applied to precision connectors, and make the connector more delicate and beautiful.

[0062] Based on the above embodiments, as Figure 4 shown, in a possible implementation, the AC-DC conversion circuit is a rectifier.

[0063] Specifically, an alternating current can be converted into a direct current through a rectifier, thereby realizing the charging function for the circuit board. The rectifier can be a full-wave rectifier, a half-wave rectifier, or a bridge rectifier, and the embodiments of the present application do not limit this.

[0064] In a possible implementation manner, as Figure 5 shown, the rectifier includes: a first diode P1, a second diode P2, a third diode P3, and a fourth diode P4;

[0065] The positive electrode of the first diode P1 is connected to the positive electrode of the connector, and the negative electrode of the first diode P1 is connected to the first branch a of the second port of the circuit board;

[0066] The positive electrode of the second diode P2 is connected to the negative electrode of the connector, and the negative electrode of the second diode P2 is connected to the negative electrode of the first diode P1;

[0067] The negative electrode of the third diode P3 is connected to the positive electrode of the connector, and the positive electrode of the third diode P3 is connected to the second branch b of the second port of the circuit board;

[0068] The positive electrode of the fourth diode P4 is connected to the positive electrode of the third diode P3, and the negative electrode of the fourth diode P4 is connected to the positive electrode of the second diode P2.

[0069] Specifically, a full-wave rectifier is realized through four diodes, namely the first diode P1, the second diode P2, the third diode P3, and the fourth diode P4.

[0070] For charging, the rectifier enables the connector and the charging base to be non-polarity-sensitive. Whether the positive electrode of the connector is connected to the positive electrode of the charging base and the negative electrode of the connector is connected to the negative electrode of the charging base, or the positive electrode of the connector is connected to the negative electrode of the charging base and the negative electrode of the connector is connected to the positive electrode of the charging base, the circuit board PCB can be normally powered. That is, regardless of whether the polarity of the connector Pogo Pin is the same as that of the charging base, the voltage polarity reaching the circuit board PCB remains unchanged, and the circuit board PCB can be normally powered.

[0071] In the above embodiment, only a rectifier is added to the charging circuit. The rectifier can be composed of four diodes, for example, and the cost is relatively low. This solution will greatly improve the efficiency of R & D debugging and production testing, avoid the additional consumption of human and material resources caused by time waiting and forced disassembly, and save costs.

[0072] In a possible implementation manner, the other end of the AC-DC conversion circuit is respectively connected to the first end and the second end of the connector.

[0073] Further, one end of the rectifier is connected to the circuit board, and the other end is respectively connected to the first end and the second end of the connector.

[0074] In a possible implementation, the circuit board is a Printed Circuit Board (PCB).

[0075] In a possible implementation, the first end of the connector is the positive electrode; the second end of the connector is the negative electrode.

[0076] In the embodiment of the present application, an AC-DC conversion circuit is connected between the circuit board and the connector, and the Reset pin of the circuit board is connected to the positive electrode of the connector. When the polarity of the connector is different from that of the charging base, Reset is connected to the positive electrode of the connector, and at this time, the positive electrode of the connector contacts the negative electrode of the charging base. Therefore, Reset is at a low level to achieve reset and restart. Due to the existence of the AC-DC conversion circuit, the charging function can be realized regardless of whether the polarity of the connector is the same as or different from that of the charging base.

[0077] The embodiment of the present application also provides a terminal device, including:

[0078] The charging circuit as described in any one of the foregoing embodiments, and a housing;

[0079] Wherein, the charging circuit is arranged in the housing.

[0080] For the terminal device in the embodiment of the present application, its implementation principle and technical effects are similar to the solutions in the embodiments of the foregoing charging circuit, and will not be elaborated here.

[0081] The embodiment of the present application provides a charging system, including:

[0082] The terminal device and the charging base as described in any one of the first aspect;

[0083] Wherein, the charging base has a charging port for connecting to the connector of the terminal device.

[0084] For the charging system in the embodiment of the present application, its implementation principle and technical effects are similar to the solutions in the embodiments of the foregoing charging circuit, and will not be elaborated here.

[0085] Figure 6 It is a block diagram of a terminal device shown in the embodiment of the present application. For example, the terminal device can be a smart phone, a computer, a tablet device, a wearable device, etc.

[0086] Refer to Figure 6, the terminal device may further include one or more of the following components: a processing component 602, a memory 604, a power component 606, a multimedia component 608, an audio component 610, an input / output (I / O) interface 612, a sensor component 614, and a communication component 616.

[0087] The processing component 602 generally controls the overall operation of the terminal device, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to complete all or part of the steps of the above methods. In addition, the processing component 602 may include one or more modules to facilitate the interaction between the processing component 602 and other components. For example, the processing component 602 may include a multimedia module to facilitate the interaction between the multimedia component 608 and the processing component 602.

[0088] The memory 604 is configured to store various types of data to support the operation of the terminal device. Examples of these data include instructions for any application or method operating on the terminal device, contact data, phone book data, messages, pictures, videos, etc. The memory 604 may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, a magnetic disk, or an optical disk.

[0089] The power component 606 provides power to various components of the terminal device. The power component 606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the terminal device.

[0090] The multimedia component 608 includes a screen that provides an output interface between the terminal device and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can not only sense the boundaries of touch or swipe actions, but also detect the duration and pressure associated with the touch or swipe operation. In some embodiments, the multimedia component 608 includes a front camera and / or a rear camera. When the terminal device is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0091] The audio component 610 is configured to output and / or input audio signals. For example, the audio component 610 includes a microphone (MIC), which is configured to receive external audio signals when the terminal device is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 604 or transmitted via the communication component 616. In some embodiments, the audio component 610 further includes a speaker for outputting audio signals.

[0092] The I / O interface 612 provides an interface between the processing component 602 and a peripheral interface module, and the peripheral interface module may be a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

[0093] The sensor component 614 includes one or more sensors for providing status assessments of various aspects of the terminal device. For example, the sensor component 614 can detect the on / off state of the terminal device, the relative positioning of components, such as the display and keypad of the terminal device. The sensor component 614 can also detect a change in the position of the terminal device or a component of the terminal device, the presence or absence of user contact with the terminal device, the orientation or acceleration / deceleration of the terminal device, and the temperature change of the terminal device. The sensor component 614 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 614 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 614 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0094] The communication component 616 is configured to facilitate communication between the terminal device and other devices in a wired or wireless manner. The terminal device can access a wireless network based on communication standards, such as WiFi, 2G, 3G, 4G, or 5G, or a combination thereof. In an exemplary embodiment, the communication component 616 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 616 further includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0095] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known or customary techniques in the art not disclosed herein. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0096] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A charging circuit, characterized in that, Comprising: A circuit board, an AC-DC conversion circuit, and a connector, wherein the connector is a spring pin; Wherein, a first port of the circuit board is connected to a first end of the connector, the first end of the connector is the positive electrode, the second end of the connector is the negative electrode, and the first port of the circuit board is a reset pin; The circuit board is configured to restart according to the level of the first port. Wherein, when the polarity of the connector is different from the polarity of the charging base, the positive electrode of the connector contacts the negative electrode of the charging base. At this time, the first port of the circuit board is at a low level, and the reset restart of the circuit board can be achieved; A second port of the circuit board is connected to a first end of the AC-DC conversion circuit; the AC-DC conversion circuit is configured to convert the alternating current input by the charger into direct current; A second end of the AC-DC conversion circuit is connected to the connector; the connector is configured to be connected to the charger; The other end of the AC-DC conversion circuit is respectively connected to the first end and the second end of the connector.

2. The circuit according to claim 1, wherein The AC-DC conversion circuit is a rectifier.

3. The circuit according to claim 2, wherein, The rectifier comprises: a first diode, a second diode, a third diode, and a fourth diode; The positive electrode of the first diode is connected to the positive electrode of the connector, and the negative electrode of the first diode is connected to a first branch of the second port of the circuit board; The positive electrode of the second diode is connected to the negative electrode of the connector, and the negative electrode of the second diode is connected to the negative electrode of the first diode; The negative electrode of the third diode is connected to the positive electrode of the connector, and the positive electrode of the third diode is connected to a second branch of the second port of the circuit board; The positive electrode of the fourth diode is connected to the positive electrode of the third diode, and the negative electrode of the fourth diode is connected to the positive electrode of the second diode.

4. The circuit according to any one of claims 1-3, wherein The circuit board is a printed circuit board (PCB).

5. A terminal device, characterized in that, Comprising: The charging circuit according to any one of claims 1-4, and a housing; Wherein, the charging circuit is disposed in the housing.

6. A charging system, characterized in that, Comprising: The terminal device and the charging base according to claim 5; Wherein, the charging base has a charging port, and the charging port is configured to be connected to the connector of the terminal device.

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