CN222464446U

CN222464446U - Starting circuits, functional modules, electronic devices and their accessories

Info

Publication number: CN222464446U
Application number: CN202420179136.2U
Authority: CN
Inventors: 梁帅
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2024-01-24
Filing date: 2024-01-24
Publication date: 2025-02-11
Anticipated expiration: 2034-01-24

Abstract

The present disclosure relates to a starting circuit, a functional module, an electronic device and its accessories, including: an isolation module, a trigger module; the trigger end of the isolation module is connected to the trigger output end of the trigger module; the isolation module is in a power supply circuit in which a power supply provides working power to a power consumption system; the trigger input end of the trigger module is used to couple with a charged device; the isolation module is used to selectively turn on or off the power supply circuit based on the coupling between the trigger input end of the trigger module and the charged device. The operation of providing power to the charged device without sensing can be realized, which improves the convenience and safety of use, and there is no risk of false triggering, thereby avoiding unnecessary power loss. The operation of providing charging power to the charged device without sensing can also be realized, and timely power off can also avoid additional unnecessary power loss.

Description

Start-up circuit, functional module, electronic equipment and accessory thereof

Technical Field

The disclosure relates to the field of charging technologies, and in particular relates to a starting circuit, a functional module, electronic equipment and accessories thereof.

Background

The mobile power supply is in an off state if the mobile power supply is in a state of not charging the terminal based on power consumption, and is in an on state if the mobile power supply is connected with a charging interface of the terminal, and then the mobile power supply is triggered to be switched to be in an on state by a manual key, so that the mobile power supply is awakened to charge the terminal, the convenience is low, the problem of false triggering exists, and the additional unnecessary electric quantity loss of the mobile power supply is caused.

Disclosure of utility model

In order to overcome the problems in the related art, the present disclosure provides a start circuit, a functional module, an electronic device and accessories thereof.

According to a first aspect of embodiments of the present disclosure, there is provided a start-up circuit comprising:

The device comprises an isolation module and a triggering module;

The triggering end of the isolation module is connected with the triggering output end of the triggering module;

The isolation module is positioned in a power supply loop for supplying working power to the power utilization system by the power supply;

The trigger input end of the trigger module is used for being coupled with the charged equipment;

The isolation module is used for selectively switching on or switching off the power supply loop based on the coupling condition of the trigger input end of the trigger module and the charged equipment.

Optionally, the isolation module comprises an isolation sub-circuit;

The first end of the isolation sub-circuit is configured as a voltage input end of the isolation module, and the voltage input end is used for being coupled with the positive electrode of the power supply;

The second end of the isolation sub-circuit is configured as a trigger end of the isolation module;

The third terminal of the isolation sub-circuit is configured as a voltage output of the isolation module for coupling with the power utilization system.

Optionally, the isolation subcircuit comprises a MOS tube Q1;

The source electrode of the MOS transistor Q1 is configured as a first end of the isolator circuit, the grid electrode of the MOS transistor Q1 is configured as a second end of the isolator circuit, and the drain electrode of the MOS transistor Q1 is configured as a third end of the isolator circuit.

Optionally, the triggering module comprises a voltage bias sub-circuit and a current bias sub-circuit;

The first end of the voltage bias sub-circuit is configured as a voltage input end of the trigger module, and the voltage input end of the trigger module is connected with the positive electrode of the power supply;

the second end of the voltage bias sub-circuit is connected with the first end of the current bias sub-circuit and then is configured as the trigger output end of the trigger module;

A second terminal of the current bias subcircuit is configured as the trigger input terminal of the trigger module.

Optionally, the trigger module comprises a trigger sub-circuit;

The signal input end of the trigger sub-circuit is coupled with the power key, and the signal output end of the trigger sub-circuit is connected with the second end of the current bias sub-circuit.

Optionally, the trigger sub-circuit comprises a triode Q2, a resistor R3 and a resistor R4;

The collector of the triode Q2 is configured as a signal output end of the trigger sub-circuit, the base of the triode Q2 is connected with the first end of the resistor R3 and the first end of the resistor R4, and the emitter of the triode Q2 and the second end of the resistor R4 are grounded;

The second terminal of the resistor R3 is configured as a signal input of the trigger sub-circuit.

Optionally, the voltage bias subcircuit includes a resistor R1;

The first end of the resistor R1 is configured as a first end of the voltage bias sub-circuit, and the second end of the resistor R1 is configured as a second end of the voltage bias sub-circuit.

Optionally, the current bias subcircuit includes a resistor R2;

The first end of the resistor R2 is configured as a first end of the current bias sub-circuit, and the second end of the resistor R2 is configured as a second end of the current bias sub-circuit.

Optionally, the trigger input terminal of the trigger module is used for being coupled with the charged device through a plurality of ports respectively.

According to a second aspect of embodiments of the present disclosure, there is provided a functional module comprising the start-up circuit of any one of the first aspects.

According to a third aspect of embodiments of the present disclosure, there is provided an electronic device, including the start-up circuit of any one of the first aspect, or the functional module of the second aspect.

According to a fourth aspect of embodiments of the present disclosure, there is provided an accessory for an electronic device, including the start-up circuit of any one of the first aspects, or the functional module of the second aspect.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

The power supply circuit comprises a starting circuit, a trigger module, an isolation module, a power supply circuit and a charging device, wherein the trigger end of the isolation module is connected with the trigger output end of the trigger module, the isolation module is arranged in the power supply circuit for supplying working power to the power supply system by a power supply, the trigger input end of the trigger module is used for being coupled with the charging device, the isolation module is used for selectively switching on or switching off the power supply circuit based on the coupling condition of the trigger input end of the trigger module and the charging device, and accordingly the isolation module switches on the power supply circuit to output the power supplied by the power supply to the main system, and therefore the power supply circuit is electrified to realize the automatic starting of supplying power to the charging device. The operation of supplying power to the charged equipment without sense can be realized, the convenience and the safety of use are improved, and the risk of false triggering can not exist, so that unnecessary electric quantity loss is avoided. The isolation module is connected with the power supply loop to stop providing the power provided by the power supply to the main system, and the power provided by the power supply cannot be output to the main system, so that the main system is powered off, enters a sleep mode, and automatically stops providing charging power to the charged equipment. The operation of supplying charging power to the charged equipment without inductance disconnection can be realized, and the additional unnecessary electric quantity loss can be avoided when the power is timely cut off.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a circuit diagram of a startup circuit, according to an example embodiment.

Fig. 2 is a circuit diagram of another startup circuit shown according to an exemplary embodiment.

Fig. 3 is a schematic diagram of a wire pin of a type-c interface, according to an example embodiment.

Fig. 4 is a block diagram of an electronic device, according to an example embodiment.

Reference numerals

100-Start-up circuit, 101-isolation module, 1011-isolation sub-circuit, 102-trigger module, 1021-voltage bias sub-circuit, 1022-current bias sub-circuit, 1023-trigger sub-circuit.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

It should be noted that, all actions for acquiring signals, information or data in the present disclosure are performed under the condition of conforming to the corresponding data protection rule policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.

In the embodiment of the disclosure, in order to achieve charging safety and convenience and avoid additional unnecessary power loss caused by false triggering, a starting circuit is provided, and as shown in fig. 1, the starting circuit 100 includes an isolation module 101 and a triggering module 102.

The trigger end of the isolation module 101 is connected with the trigger output end of the trigger module 102.

The isolation module 101 is in a power supply loop where the power supply provides operating power to the power system.

The trigger input of the trigger module 102 is configured to couple with a charged device.

The isolation module 101 is configured to selectively switch on or off the power supply loop based on a coupling condition of the trigger input terminal of the trigger module 102 and the charged device.

In the embodiment of the disclosure, the isolation module 101 is configured to, if the coupling between the trigger input end of the trigger module 102 and the charged device is successful, turn on a power supply loop that provides operating power to the power consumption system, so as to provide the power VBAT provided by the power supply to the power consumption system, where the power consumption system operates based on the power provided by the power supply.

If the trigger input terminal of the trigger module 102 is disconnected from the charged device, the power supply loop for providing working power to the power utilization system by the power supply is disconnected, so as to stop providing the power VBAT provided by the power supply to the power utilization system.

The power consumption system may be, for example, a main system VSYS of a mobile power supply, or may be, for example, a main system VSYS of a charger, or may be, for example, a main system of a charging gun.

In the embodiment of the disclosure, in a power supply loop for providing working power to a power utilization system by using a power supply of the isolation module 101, the power supply and the power utilization system may be isolated, and the triggering module 102 triggers the power supply loop between the power supply and the power utilization system to be turned on or off. In order to only when the coupling with the charged device is successful, the triggering module 102 may trigger the isolation module 101 to conduct the power supply loop between the power supply and the power utilization system, so as to start supplying power to the power utilization system, and the power utilization system provides power to the charged device, thereby improving charging safety.

Under the condition of being coupled with and disconnected from the charged equipment, the triggering module 102 can trigger the isolation module 101 to disconnect the power supply loop between the power supply and the power utilization system, so that the power utilization system stops working without power, and further, the power supply to the charged equipment is stopped, and the extra unnecessary power consumption is avoided.

In one possible implementation, the triggering module 102 triggers the isolation module 101 to turn on or off the power supply loop by detecting whether it is coupled to the ground of the charged device. If it is detected that the ground wire of the charged device is successfully coupled, i.e. for example, the charger is plugged into the charging port of the charged device, or the plug of the mobile power source is plugged into the charging port of the mobile phone, the conductive power supply loop of the isolation module 101 is triggered. If the disconnection of the ground connection of the charged device is detected, i.e. the charger pulls out the charging port of the charged device or the plug of the mobile power source pulls out the charging port of the mobile phone, the disconnection of the power supply loop of the isolation module 101 is triggered.

In one possible implementation, the trigger input of the trigger module 102 is connected to a power output for coupling to a ground in the power input of the charged device. Thus, the triggering module 102 may identify whether the charged device has been properly connected to the charged device by detecting a voltage change between the power output and ground. When a voltage change is detected, the trigger module 102 generates a corresponding trigger signal and sends it to the trigger terminal of the isolation module 101. The trigger signal is used to indicate that the charged device has been properly connected to the charged device, at which time the isolation module 101 should conduct a power supply loop that provides operating power to the power system. If the trigger signal is not sent or a disconnect signal is received, indicating that the charged device is not properly connected, the isolation module 101 should remain in an off state, preventing the power supply from providing power to the host system.

In the embodiment of the disclosure, if the electronic device is a charger of a personal computer, a tablet computer, a wearable device, a mobile terminal, or the like, the power supply may be a power supply formed by converting ac mains supply into dc after being connected with the mains supply. If the electronic device is a mobile power supply, the power supply may be a battery of the mobile power supply. Similarly, if the electronic device is a high voltage electronic device on a vehicle, the power source may be a power cell, a fuel cell, or the like of the high voltage electronic device.

The power supply system comprises a trigger module, an isolation module, a power supply circuit, a charging device and a charging device, wherein the trigger end of the isolation module is connected with the trigger output end of the trigger module, the isolation module is positioned in the power supply circuit for supplying working power to the power supply system by a power supply, the trigger input end of the trigger module is used for being coupled with the charging device, the isolation module is used for selectively switching on or switching off the power supply circuit based on the coupling condition of the trigger input end of the trigger module and the charging device, and accordingly the isolation module switches on the power supply circuit to output the power supplied by the power supply to the main system, and therefore the main system is electrified, and the power supply to the charging device is automatically started. The operation of supplying power to the charged equipment without sense can be realized, the convenience and the safety of use are improved, and the risk of false triggering can not exist, so that unnecessary electric quantity loss is avoided. The isolation module is connected with the power supply loop to stop providing the power provided by the power supply to the main system, and the power provided by the power supply cannot be output to the main system, so that the main system is powered off, enters a sleep mode, and automatically stops providing charging power to the charged equipment. The operation of supplying charging power to the charged equipment without inductance disconnection can be realized, and the additional unnecessary electric quantity loss can be avoided when the power is timely cut off.

Optionally, with continued reference to FIG. 1 or FIG. 2, the isolation module 101 includes an isolation subcircuit 1011;

A first end of the isolation sub-circuit 1011 is configured as a voltage input of the isolation module 101 for coupling with the positive pole of the power supply;

a second end of the isolation sub-circuit 1011 is configured as a trigger end of the isolation module 101;

The third terminal of the isolator sub-circuit 1011 is configured as a voltage output of the isolator module 101 for coupling with the power consuming system.

The voltage output end can be directly connected with the power input end of the power utilization system, or can be indirectly connected with the power utilization system through a safety circuit, a step-up and step-down circuit and the like.

In the embodiment of the disclosure, a relay may be configured in the isolation sub-circuit 1011, and further, a first end of a relay contact switch and a first end of a coil may be configured as a voltage input end of the isolation module 101, and connected to a power source. The second end of the relay contact switch is configured as the voltage output end of the isolation module 101, connected to the electrical system, and the second end of the coil may be configured as the trigger end of the isolation module 101. And if the power output end is connected with the ground wire in the power input end of the charged equipment, the coil of the relay forms current, under the action of a magnetic field formed by the current, the contact switch of the relay is closed, the power supply loop for supplying power to the power utilization system by the power supply is conducted, the power supplied by the power supply is supplied to the power utilization system, and the power utilization system works based on the power supplied by the power supply.

If the power output end is disconnected with the ground wire in the power input end of the charged equipment, the coil of the relay cannot form a closed loop, no current flows, the contact switch of the relay is disconnected, and the power supply loop for supplying power to the power utilization system by the power supply is disconnected so as to stop supplying the power supplied by the power supply to the power utilization system.

Optionally, with continued reference to fig. 1 or fig. 2, the isolation module 101 includes a MOS transistor Q1;

The source of the MOS transistor Q1 is configured as a first end of the isolation sub-circuit 1011, the gate of the MOS transistor Q1 is configured as a second end of the isolation sub-circuit 1011, and the drain of the MOS transistor Q1 is configured as a third end of the isolation sub-circuit 1011.

In one possible implementation, with continued reference to FIG. 1, the trigger module 102 includes a voltage bias subcircuit 1021 and a current bias subcircuit 1022.

The first terminal of the voltage bias sub-circuit 1021 is configured as a voltage input terminal of the trigger module 102, and the voltage input terminal of the trigger module 102 is connected to the positive electrode of the power supply.

A second terminal of the voltage bias sub-circuit 1021 is connected to a first terminal of the current bias sub-circuit 1022 and is configured as the trigger output terminal of the trigger module 102.

A second terminal of the current bias subcircuit 1022 is configured as the trigger input terminal of the trigger module 102.

The voltage bias sub-circuit 1021 can provide bias voltage required by the isolation module 101, limit current flowing through the isolation module 101, and prevent damage to circuit elements due to excessive current. The current bias subcircuit 1022 may provide the required bias current for triggering the isolation module 101 to turn on or off the power supply to the power loop of the main system.

When the power output terminal is physically connected to the ground line in the power input terminal of the charged device, the voltage at the second terminal of the current bias sub-circuit 1022 changes, that is, the voltage decreases, and the voltage decreases of the triggering module 102 trigger the isolation module 101 to conduct the power supply to the power circuit of the main system. Meanwhile, the voltage bias subcircuit 1021 provides bias voltage required by the isolation module 101 to prevent damage to circuit elements due to excessive current. When the power output terminal is physically disconnected from the ground line in the power input terminal of the charged device, the voltage at the second terminal of the current bias sub-circuit 1022 is recovered, that is, the voltage rises, the voltage of the triggering module 102 is recovered, the isolating module 101 is not triggered, and the power circuit of the power supply to the main system is disconnected. At the same time, the voltage bias subcircuit 1021 also returns to the previous voltage.

In the embodiment of the present disclosure, the voltage bias sub-circuit 1021 generates a stable voltage signal, and the current bias sub-circuit 1022 is mainly responsible for converting the voltage signal into a current signal, so as to implement the trigger control of the isolation module 101.

In an exemplary embodiment, the first terminal of the voltage bias subcircuit 1021 is configured to be coupled to a voltage input terminal of the trigger module 102 for receiving a power supply voltage. The voltage bias subcircuit 1021 may use a constant voltage source circuit to achieve generation of a stable voltage signal, for example, may use zener diode and resistor components. When the power supply voltage is normal, the voltage stabilizing diode distributes the voltage to the resistor to generate a stable voltage signal. This stabilized voltage signal will be sent to the current bias subcircuit 1022. A second terminal of the voltage bias sub-circuit 1021 is coupled to a first terminal of the current bias sub-circuit 1022 and is configured as a trigger output terminal of the trigger module 102. The current bias sub-circuit can adopt a current switch circuit to realize conversion and control of voltage signals, and can be composed of a MOS tube or other controllable switch devices. When the electronic device is in communication with the charged device, current flows through the current biasing subcircuit. This current flows through the second terminal of the current bias subcircuit, the trigger input terminal of the trigger module 102, forming a current loop, such that the second terminal of the current bias subcircuit generates a current signal. This current signal will cause the current switching device to remain on, so that the trigger end of the isolation module 101 receives the trigger signal, and thus turns on the loop provided by the power supply to the main system. If the power output end of the electronic device is disconnected from the ground wire of the power input end of the charged device, the current loop is cut off, so that the current switching device is closed, the trigger end of the isolation module 101 loses the trigger signal, and the loop provided by the power supply to the main system is cut off.

In summary, the voltage bias sub-circuit 1021 and the current bias sub-circuit 1022 of the trigger module 102 together realize detection and control of the connection state between the electronic device and the charged device, so as to ensure that the electronic device only provides power to the main system when the electronic device is correctly connected with the charging device, and improve charging safety.

In one possible implementation, referring to fig. 2, the trigger module 102 includes a trigger sub-circuit 1023.

The signal input end of the trigger sub-circuit 1023 is coupled to the power key of the electronic device, and the signal output end of the trigger sub-circuit 1023 is connected to the second end of the current bias sub-circuit 1022.

In the embodiment of the disclosure, when the power key is pressed, the trigger sub-circuit 1023 triggers the current bias sub-circuit 1022 to generate a current, which causes the current switching device in the current bias sub-circuit 1022 to maintain a conductive state, so that the trigger end of the isolation module 101 receives the trigger signal, and thus turns on the loop provided by the power supply to the main system. If the power output end of the electronic equipment is disconnected with the ground wire of the power input end of the charged equipment or the power key is reset, the current loop is cut off, so that the current switching device is closed, the triggering end of the isolation module 101 loses the triggering signal, and the loop provided by the power supply to the main system is cut off.

Thus, when the power output terminal of the electronic device is connected to the charging port of the charged device, the starting circuit 100 detects the connection state and automatically starts charging. The power key can be pressed to start charging under manual operation.

In one possible implementation, with continued reference to FIG. 2, the trigger sub-circuit 1023 includes a transistor Q2, a resistor R3, and a resistor R4.

The collector of the triode Q2 is configured as a signal output end of the trigger sub-circuit 1023, the base of the triode Q2 is connected with the first end of the resistor R3 and the first end of the resistor R4, and the emitter of the triode Q2 and the second end of the resistor R4 are grounded.

The second terminal of the resistor R3 is configured as a signal input of the trigger sub-circuit 1023.

In the embodiment of the disclosure, the triode Q2 may be an NPN triode, which has a current amplifying function. Resistor R3 and resistor R4 are two voltage dividing resistors for providing the appropriate bias voltage for transistor Q2.

Referring to fig. 2, the second end of the resistor R3 is connected to a PS HOLDPower Supply Hold pin in a power key of the mobile power supply. When the mobile power is not on, if the power button PS HOLDPower Supply Hold is in the off state, that is, the power button is not pressed, the second end of the resistor R3 has no voltage. At this time, the base voltage of the transistor Q2 is low, resulting in the transistor Q2 being turned off. With transistor Q2 off, current bias subcircuit 1022 does not form a current loop, thereby allowing isolation module 101 to remain off, disconnecting the loop from the power supply providing power to the main system.

Further, when the power button is pressed, the second terminal of the resistor R3 obtains a voltage. The voltage is divided by a resistor R3 and a resistor R4 and then is added to the base electrode of the triode Q2. When the base voltage is high enough, transistor Q2 turns on and current bias subcircuit 1022 forms a current loop, thereby maintaining isolation module 101 in an on state, turning on the loop where the power supply provides power to the main system.

In one possible implementation, with continued reference to FIG. 1 or FIG. 2, the voltage bias subcircuit 1021 includes a resistor R1.

The first terminal of the resistor R1 is configured as a first terminal of the voltage bias subcircuit 1021, and the second terminal of the resistor R1 is configured as a second terminal of the voltage bias subcircuit 1021.

In one possible implementation, with continued reference to FIG. 1 or FIG. 2, the current biasing subcircuit 1022 includes a resistor R2.

The first end of the resistor R2 is configured as a first end of the current bias sub-circuit 1022, and the second end of the resistor R2 is configured as a second end of the current bias sub-circuit 1022.

In one possible implementation, the trigger input of the trigger module 102 is connected to a portion of the ground in the power output of the electronic device.

In this disclosure, referring to fig. 2, a gate of a MOS transistor Q1 is connected to a first end of the resistor R2, a source of the MOS transistor Q1 may be connected to a battery positive electrode of the mobile power supply, and a drain of the MOS transistor Q1 may be coupled to an electrical system.

The drain electrode of the MOS tube Q1 is connected with the pin of the input voltage VSYS of the power utilization system, and the source electrode of the MOS tube Q1 can be connected with the battery anode VBAT of the mobile power supply.

The grid electrode of the MOS tube Q1 is connected with the source electrode of the MOS tube Q1 through the resistor R1.

The second end of the resistor R2 is connected with a part of the grounding component in the power output end, and the grounding component connected with the second end of the resistor R2 can be connected with the ground wire in the charging port when being coupled with the charging port of the charged device.

In the disclosed embodiment, the second end of the resistor R2 is connected to a part of the ground members in the power output terminals, not to all of the ground members in the power output terminals. A part of the grounding component in the power output end is connected with the second end of the resistor R2, and the other part of the grounding component in the power output end is connected with the negative electrode or the common grounding end of the battery, so that the grounding component connected with the second end of the resistor R2 can be well grounded when being coupled with a charging port of a charged device.

In the embodiment of the disclosure, the gate voltage of the MOS transistor Q1 is adjusted by coupling with the charging port of the charged device, so that the MOS transistor Q1 can be turned on and off, and the power supply loop is selectively turned on or off.

The resistor R1 and the resistor R2 respectively provide bias voltage and current for the MOS transistor Q1. The resistor R1 is connected between the gate and the source of the MOS transistor Q1, and can be used to provide a bias voltage required by the gate. The resistor R2 is connected between the grid electrode of the MOS tube Q1 and a part of the grounding component of the power output end and is used for providing bias current required by the grid electrode.

Further, when the trigger input terminal of the trigger module 102 is successfully coupled to the charged device, the grounding component connected to the second terminal of the resistor R2 is connected to the ground line in the charging port. Thus, the second end of the resistor R2 is grounded, so as to provide bias current for the gate of the MOS transistor Q1, and turn on the MOS transistor Q1. Therefore, a power supply loop between the power supply and the power utilization system is conducted, the power supply provides working power for the power utilization system, a main system of the mobile power supply can control the mobile power supply to provide charging power for charged equipment under the condition that the starting circuit is applied to the mobile power supply, and a main system of the charger can control the mains supply to be converted and provided as power for the charged equipment under the condition that the starting circuit is applied to the charger.

Further, when the trigger input of the trigger module 102 is decoupled from the charged device, the ground element connected to the second end of the resistor R2 is disconnected from the ground connection in the charging port. In this way, the second end of the resistor R2 is disconnected and grounded, so that bias current is provided for the gate of the MOS transistor Q1 to cut off, so that the power supply loop between the power supply and the power consumption system is disconnected, and when the starting circuit is applied to a mobile power supply, for example, the main system of the mobile power supply is powered off and stops supplying charging power to the charged device, and when the starting circuit is applied to a charger, for example, the main system of the charger is powered off and can stop converting mains supply to supply the charging power to the charged device as power.

When the MOS transistor Q1 is turned on, the resistor R1 may limit the current flowing through the MOS transistor Q1 to prevent the circuit element from being damaged due to the excessive current.

Optionally, the trigger input of the trigger module 102 is configured to be coupled to a charged device through a plurality of ports, respectively.

In the embodiment of the disclosure, the starting circuit 100 may be connected to a plurality of power output terminals of the same or partially the same or completely different connector types, and the plurality of power output terminals may be coupled to the charged device, so as to adapt to different interface types and different brands of charged devices, thereby providing a wider application range.

In the embodiment of the disclosure, the second end of the resistor R2 in the starting circuit is respectively connected with a part of grounding components in the power output end of each connector type. Therefore, no matter which type of connector is used for establishing physical connection with the charged equipment, the second end of the resistor R2 can be grounded, so that bias current is provided for the grid electrode of the MOS tube Q1, the MOS tube Q1 is conducted, and the stable starting of the mobile power supply is realized.

For example, when a Type-C connector Type power output terminal is used, the second terminal of the resistor R2 is connected to a part of the ground line in the USB Type-C connector. When using the Micro USB joint type power output terminal, the second end of the resistor R2 is connected with the metal shell in the Micro USB joint. Likewise, when a lighting connector type power output terminal is used, the second terminal of the resistor R2 is connected to the metal case or one of the ground lines in the lighting connector.

The technical scheme can realize the compatibility of the power output ends of a plurality of connector types, provides a wider application range for the mobile power supply, and ensures the stable starting and running of the mobile power supply.

Alternatively, when a type-C connector type power output is used, the second terminal of the resistor R2 is connected to a part of the ground pin 1012 in the type-C type power output.

Optionally, the second end of the resistor R2 is connected to any one of the ground pins 1012 of the type-c power output.

Referring to fig. 3, a second end of the resistor R2 is connected to the A1 ground pin 1012 in the type-c power output terminal, or a second end of the resistor R2 is connected to the a12 ground pin 1012 in the type-c power output terminal, or a second end of the resistor R2 is connected to the B1 ground pin 1012 in the type-c power output terminal, or a second end of the resistor R2 is connected to the B12 ground pin 1012 in the type-c power output terminal. In this way, the second end of the resistor R2 is connected with any one of the ground pins 1012 of the type-c power output ends, so that the MOS transistor Q1 can be triggered to be turned on without sense, the mobile power supply provides charging power for the charged equipment, and the other ground ends of the charged equipment can be normally grounded.

Optionally, the second end of the resistor R2 is connected to any two of the ground pins 1012 in the type-c power output.

With continued reference to fig. 3, the second end of resistor R2 is connected to the A1 and a12 ground pins 1012 in the type-c power output, or the second end of resistor R2 is connected to the A1 and B1 ground pins 1012 in the type-c power output, or the second end of resistor R2 is connected to the B1 and B12 ground pins 1012 in the type-c power output, or the second end of resistor R2 is connected to the a12 and B12 ground pins 1012 in the type-c power output, or the second end of resistor R2 is connected to the A1 and B12 ground pins 1012 in the type-c power output, or the second end of resistor R2 is connected to the B1 and a12 ground pins 1012 in the type-c power output. In this way, the second end of the resistor R2 is connected with any two of the ground pins 1012 in the type-c power output end, so that the MOS transistor Q1 can be triggered to be turned on without inductance, the mobile power supply provides charging power for the charged device, and the other ground ends of the charged device can be ensured to be grounded normally.

Optionally, the second end of the resistor R2 is connected to any three of the ground pins 1012 in the type-c power output.

With continued reference to FIG. 3, the second end of resistor R2 is connected to the A1, B1, and A12 ground pins 1012 in the type-c power output, or the second end of resistor R2 is connected to the A1, B12, and B1 ground pins 1012 in the type-c power output, or the second end of resistor R2 is connected to the B1, A12, and B12 ground pins 1012 in the type-c power output, or the second end of resistor R2 is connected to the A1, B1, and B12 ground pins 1012 in the type-c power output, or the second end of resistor R2 is connected to the A1, A12, and B12 ground pins 1012 in the type-c power output. In this way, the second end of the resistor R2 is connected with any three of the ground pins 1012 in the type-c power output ends, so that the MOS transistor Q1 can be triggered to be turned on without sense, the mobile power supply provides charging power for the charged device, and the remaining ground ends ensure that other ground ends of the charged device can be grounded normally.

Alternatively, when a lighting connector type power output terminal is used, the second terminal of the resistor R2 is connected to a metal case in the lighting type power output terminal.

In the above technical solution, the second end of the resistor R2 is connected with the metal casing in the Lighting type power output end, and the Lighting socket defined in the standard design is used as the grounding end of the charged device to perform grounding treatment, when the Lighting type power output end is physically connected with the Lighting type charging port of the charged device, the power output end connected with the second end of the resistor R2 in the power output end is connected with the ground wire in the charging port. Thus, the second end of the resistor R2 is grounded, so as to provide bias current for the gate of the MOS transistor Q1, and turn on the MOS transistor Q1. Therefore, the battery of the mobile power supply is electrically connected with the main system, the battery provides working power for the main system, and the main system controls the mobile power supply to provide charging power for the charged equipment.

Alternatively, when a Micro USB connector type power output terminal is used, the second terminal of the resistor R2 is connected to a metal case in the Micro USB type power output terminal.

In the above technical solution, the second end of the resistor R2 is connected with the metal shell in the Micro USB type power output end, and the female socket of the Micro USB defined in the standard design is used as the grounding end of the charged device to perform grounding treatment, when the Micro USB type power output end is physically connected with the Micro USB type charging port of the charged device, the power output end connected with the second end of the resistor R2 in the power output end is connected with the ground wire in the charging port. Thus, the second end of the resistor R2 is grounded, so as to provide bias current for the gate of the MOS transistor Q1, and turn on the MOS transistor Q1. Therefore, the battery of the mobile power supply is electrically connected with the main system, the battery provides working power for the main system, and the main system controls the mobile power supply to provide charging power for the charged equipment.

Embodiments of the present disclosure also provide a functional module including the start-up circuit 100 as described in any of the foregoing embodiments.

It may be noted that the functional module may be configured as a chip, a circuit board module, or the like, in which the start circuit 100 is integrated.

The embodiment of the present disclosure further provides an electronic device, including the start circuit 100 according to any one of the foregoing embodiments, or a functional module according to the foregoing embodiment.

It may be noted that the electronic device may be configured as a charger of a computer, a mobile phone, an electric car, or the like, or may be a mobile power source.

The embodiment of the present disclosure further provides an accessory of an electronic device, including the start circuit 100 of any one of the foregoing embodiments, or the functional module of the foregoing embodiment.

It may be noted that the accessory of the electronic device may be configured as an external charger, a protective case with a charging function, or a keyboard protective case, for example.

Fig. 4 is a block diagram of an electronic device 800, according to an example embodiment. Referring to FIG. 4, the electronic device 800 can include one or more of a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output interface 812, a sensor component 814, and a communication component 816.

The processing component 802 generally controls overall operation of the electronic device 800, such as operation in data communication with a display. The processing component 802 may include one or more processors 820 to execute instructions to accomplish providing charging power externally or accepting charging power provided by an external storage cabinet, an external charging device. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the electronic device 800. Examples of such data include instructions for any application or method of operation on electronic device 800, and memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices, 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, magnetic or optical disk.

The power supply component 806 provides power to the various components of the electronic device 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the electronic device 800.

The multimedia component 808 includes a screen between the electronic device 800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD).

The input/output interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be power buttons or the like. These buttons may include, but are not limited to, physical keys or touch keys.

The sensor assembly 814 includes one or more sensors for providing status assessment of various aspects of the electronic device 800. For example, the sensor assembly 814 may detect an on/off state of the electronic device 800, a relative positioning of the components, such as a display of the electronic device 800, and the sensor assembly 814 may also detect a temperature change of the electronic device 800 or a component of the electronic device 800. In some embodiments, the sensor assembly 814 may also include a pressure sensor or a temperature sensor.

The communication component 816 is configured to facilitate wired communications between the electronic device 800 and other devices. For example, to communicate with a charged device or an external electronic device in compliance with a charging protocol.

In an exemplary embodiment, the electronic device 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing or receiving externally provided charging power from an external storage cabinet, an external charging device.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including instructions executable by processor 820 of electronic device 800 to perform providing charging power externally or accepting charging power provided by an external storage cabinet, an external charging device. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A starting circuit (100) is characterized by comprising an isolation module (101) and a trigger module (102);

the trigger end of the isolation module (101) is connected with the trigger output end of the trigger module (102);

The isolation module (101) is positioned in a power supply loop for supplying working power to the power utilization system by a power supply;

The trigger input end of the trigger module (102) is used for being coupled with the charged equipment;

The isolation module (101) is used for selectively switching on or switching off the power supply loop based on the coupling condition of the trigger input end of the trigger module (102) and the charged equipment.

2. The start-up circuit (100) of claim 1, wherein the isolation module (101) comprises an isolator sub-circuit (1011);

A first end of the isolation sub-circuit (1011) is configured as a voltage input of the isolation module (101) for coupling with a positive pole of the power supply;

a second end of the isolation sub-circuit (1011) is configured as a trigger end of the isolation module (101);

The third end of the isolation sub-circuit (1011) is configured as a voltage output of the isolation module (101) for coupling with the power utilization system.

3. The starting circuit (100) according to claim 2, wherein the isolation subcircuit (1011) comprises a MOS transistor Q1;

The source of the MOS transistor Q1 is configured as a first end of the isolation sub-circuit (1011), the gate of the MOS transistor Q1 is configured as a second end of the isolation sub-circuit (1011), and the drain of the MOS transistor Q1 is configured as a third end of the isolation sub-circuit (1011).

4. The start-up circuit (100) of claim 3, wherein the trigger module (102) comprises a voltage bias subcircuit (1021) and a current bias subcircuit (1022);

The first end of the voltage bias sub-circuit (1021) is configured as a voltage input end of the trigger module (102), and the voltage input end of the trigger module (102) is connected with the positive electrode of the power supply;

A second end of the voltage bias sub-circuit (1021) is connected with a first end of the current bias sub-circuit (1022) and is configured as the trigger output end of the trigger module (102);

A second terminal of the current bias subcircuit (1022) is configured as the trigger input terminal of the trigger module (102).

5. The start-up circuit (100) of claim 4, wherein the trigger module (102) comprises a trigger sub-circuit (1023);

The signal input end of the trigger sub-circuit (1023) is coupled with the power key, and the signal output end of the trigger sub-circuit (1023) is connected with the second end of the current bias sub-circuit (1022).

6. The start-up circuit (100) of claim 5, wherein the trigger sub-circuit (1023) comprises a transistor Q2, a resistor R3, and a resistor R4;

the collector of the triode Q2 is configured as a signal output end of the trigger sub-circuit (1023), the base of the triode Q2 is connected with the first end of the resistor R3 and the first end of the resistor R4, and the emitter of the triode Q2 and the second end of the resistor R4 are grounded;

The second terminal of the resistor R3 is configured as a signal input of the triggering sub-circuit (1023).

7. The start-up circuit (100) of claim 4, wherein the voltage bias subcircuit (1021) includes a resistor R1;

The first end of the resistor R1 is configured as a first end of the voltage bias subcircuit (1021), and the second end of the resistor R1 is configured as a second end of the voltage bias subcircuit (1021).

8. The start-up circuit (100) as set forth in claim 4, wherein the current bias subcircuit (1022) includes a resistor R2;

The first end of the resistor R2 is configured as a first end of the current bias sub-circuit (1022), and the second end of the resistor R2 is configured as a second end of the current bias sub-circuit (1022).

9. The start-up circuit (100) of any one of claims 1-8, wherein the trigger input of the trigger module (102) is configured to be coupled to a charged device via a plurality of ports, respectively.

10. Functional module, characterized in that it comprises a start-up circuit (100) according to any one of claims 1 to 9.

11. An electronic device comprising the start-up circuit (100) of any one of claims 1-9, or the functional module of claim 10.

12. An accessory for an electronic device, characterized by comprising a start-up circuit (100) according to any of claims 1-9, or a functional module according to claim 10.