[go: up one dir, main page]

WO2018166449A1 - Circuit de protection contre les courts-circuits, adaptateur d'alimentation et terminal mobile - Google Patents

Circuit de protection contre les courts-circuits, adaptateur d'alimentation et terminal mobile Download PDF

Info

Publication number
WO2018166449A1
WO2018166449A1 PCT/CN2018/078872 CN2018078872W WO2018166449A1 WO 2018166449 A1 WO2018166449 A1 WO 2018166449A1 CN 2018078872 W CN2018078872 W CN 2018078872W WO 2018166449 A1 WO2018166449 A1 WO 2018166449A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
power adapter
voltage
current
output
Prior art date
Application number
PCT/CN2018/078872
Other languages
English (en)
Chinese (zh)
Inventor
杨波
Original Assignee
广东欧珀移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201720247000.0U external-priority patent/CN206595696U/zh
Priority claimed from CN201710151543.7A external-priority patent/CN106849000B/zh
Application filed by 广东欧珀移动通信有限公司 filed Critical 广东欧珀移动通信有限公司
Publication of WO2018166449A1 publication Critical patent/WO2018166449A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for DC applications
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a short circuit protection circuit, a power adapter, and a mobile terminal.
  • the application of mobile terminals such as smart phones is becoming more and more widespread, and people in modern life are basically a mobile phone.
  • a power adapter At present, the outer casing of most mobile phones is a metal casing, and the metal casing is generally connected to the reference ground of the mobile phone.
  • the reference ground of the low voltage side inside the power adapter is connected with the reference ground of the mobile phone, that is, the inside of the power adapter is low.
  • the voltage side is connected to the metal casing of the mobile phone, and there is a high potential difference between the reference ground of the low voltage side inside the power adapter and the earth.
  • the embodiment of the invention provides a short circuit protection circuit, a power adapter and a mobile terminal, which can prevent the risk of electric shock when the power adapter charges the mobile terminal.
  • a first aspect of the embodiment of the present invention discloses a short circuit protection circuit, which is applied to a power adapter, and the short circuit protection circuit includes a switching device, a control circuit, an acquisition circuit, a reference circuit, and a current transformer, wherein:
  • a first end of the switching device is connected to a high voltage reference ground of the power adapter, and a second end of the switching device is connected to a first end of a first capacitor of the power adapter through an input coil of the current transformer
  • the second end of the first capacitor is connected to the low voltage reference ground of the power adapter or the low voltage positive pole
  • the third end of the switching device is connected to the control end of the control circuit
  • the first detecting end of the control circuit Connecting an output end of the acquisition circuit, a first input end of the acquisition circuit is connected to one end of an output coil of the current transformer, and a second input end of the acquisition circuit is connected to an output coil of the current transformer One end, the second detecting end of the control circuit is connected to the output end of the reference circuit;
  • the control circuit is configured to compare a current of an output coil of the current transformer collected by the acquisition circuit with an operating current of the reference circuit, and a current of an output coil of the current transformer is greater than a reference circuit
  • a shutdown signal is output to the switching device when the current is applied to disconnect the switching device.
  • a second aspect of the embodiments of the present invention discloses a power adapter for charging a mobile terminal, where the power adapter includes a rectifier circuit, a high voltage circuit, a transformer, a low voltage circuit, and the first aspect of the embodiment of the present invention.
  • Short circuit protection circuit where:
  • the rectifier circuit is configured to convert the input alternating current into a direct current output to the high voltage circuit
  • the high voltage circuit is configured to process the direct current output by the rectifier circuit and control an input high voltage of the transformer
  • the transformer converts the input high voltage into an output low voltage output to the low voltage circuit for voltage stabilization processing and rectification processing, and outputs the result to the mobile terminal.
  • a third aspect of the embodiments of the present invention discloses a mobile terminal, including a charging chip, a battery, and a main board.
  • the charging chip When charging the mobile terminal by using a power adapter, the charging chip is configured to receive a voltage input by the power adapter and The battery is charged.
  • the short circuit protection circuit in the embodiment of the invention comprises a switching device, a control circuit, an acquisition circuit, a reference circuit and a current transformer.
  • the control circuit is used for comparing the working current of the current transformer collected by the acquisition circuit with the working current of the reference circuit, and When the operating current of the current transformer is greater than the operating current of the reference circuit, the output is turned off to the switching device to disconnect the switching device.
  • the embodiment of the invention provides a short circuit protection circuit inside the power adapter, the short circuit protection circuit is used for detecting the current of the output coil of the current transformer, when the current transformer is detected When the current of the output coil is greater than the preset current value, the high voltage reference ground is disconnected from the low voltage reference ground or the low voltage positive pole to avoid the risk of electric shock to the mobile terminal.
  • FIG. 1 is a schematic structural diagram of a short circuit protection circuit according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of another short circuit protection circuit disclosed in an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a power adapter according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of still another mobile terminal disclosed in the implementation of the present invention.
  • references to "an embodiment” herein mean that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the invention.
  • the appearances of the phrases in various places in the specification are not necessarily referring to the same embodiments, and are not exclusive or alternative embodiments that are mutually exclusive. Those skilled in the art will understand and implicitly understand that the embodiments described herein can be combined with other embodiments.
  • the mobile terminal involved in the embodiments of the present invention may include various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to the wireless modem, and various forms of user equipment (User Equipment, UE), mobile station (MS), terminal device, and the like.
  • UE User Equipment
  • MS mobile station
  • terminal device and the like.
  • the devices mentioned above are collectively referred to as mobile terminals.
  • FIG. 1 is a schematic structural diagram of a short circuit protection circuit according to an embodiment of the present invention.
  • the short circuit protection circuit 10 includes a switching device 11, a control circuit 12, an acquisition circuit 13, and a reference circuit 14. And a current transformer 15, wherein:
  • the first end 111 of the switching device 11 is connected to the high voltage reference ground of the power adapter, and the second end 112 of the switching device 11 is connected to the first end of the first capacitor C1 of the power adapter through the input coil 51 of the current transformer 15, first The second end of the capacitor C1 is connected to the low voltage reference ground of the power adapter or the low voltage positive pole.
  • the third end 113 of the switching device 11 is connected to the control end 123 of the control circuit 12, and the first detecting end 121 of the control circuit 12 is connected to the output of the collecting circuit 13.
  • the first input end 131 of the collecting circuit 13 is connected to one end of the output coil 52 of the current transformer 15, and the second input end 133 of the collecting circuit 13 is connected to the other end of the output coil 52 of the current transformer 15.
  • the control circuit 12 is The second detecting end 122 is connected to the output end 141 of the reference circuit 14;
  • the control circuit 12 is configured to compare the current of the output coil 52 of the current transformer 15 collected by the acquisition circuit 13 with the operating current of the reference circuit 14, and output when the current of the output coil 52 of the current transformer 15 is greater than the operating current of the reference circuit 14. The signal is turned off to the switching device 11 to turn off the switching device 11.
  • the high-voltage reference ground refers to the neutral line of the mains connected to the power adapter.
  • the low-voltage reference ground refers to the reference ground of the DC voltage that is output to the mobile terminal after passing through the transformer.
  • the low voltage positive pole refers to the positive pole of the DC voltage that is output to the mobile terminal after passing through the transformer.
  • the current transformer 15 is used for current change, and can convert a large current (current of the input coil 51) into a small current (current of the output coil 52) according to a certain ratio, and is suitable for measuring an unknown large current scene, and the current transformer 15 is also Used for electrical isolation to protect other components in the power adapter from large currents.
  • the current of the output coil 52 of the current transformer 15 is the induced current generated by the output coil 52 measured by the current transformer 15 during operation.
  • the operating current of the reference circuit 14 is the current of the reference circuit 14 during operation.
  • the operating current of the reference circuit 14 can be set in advance.
  • the operating current of the reference circuit 14 is used as a reference current, and once set, it is generally a fixed value.
  • the short circuit protection circuit 10 in the embodiment of the present invention is for detecting the current between the high voltage reference ground of the power adapter and the low voltage reference ground.
  • a Y capacitor ie, the first capacitor C1 in FIG. 1
  • the Y capacitor is also called a safety capacitor for suppressing common mode interference. If there is a problem with the first capacitor C1, such as when the C1 is broken down, when the power adapter is used to charge the mobile terminal (such as a mobile phone), a short circuit occurs between the high voltage reference ground of the power adapter and the low voltage reference ground.
  • the embodiment of the present invention provides a short circuit protection circuit 10 between the high voltage reference ground of the power adapter and the low voltage reference ground for detecting the current between the low voltage reference ground inside the power adapter and the high voltage reference ground inside the power adapter (That is, the operating current of the current transformer 15), when it is detected that the operating current of the current transformer 15 is greater than the operating current of the reference circuit 14, disconnect the high voltage reference ground from the low voltage reference ground or the low voltage positive electrode to avoid electric shock from the mobile terminal. Danger. When using the power adapter to charge the mobile terminal, when detecting a large current inside the power adapter, disconnect the power supply in time to avoid the risk of electric shock and protect the user's personal safety.
  • the current transformer 15 is used for current change, and can convert a large current into a small current according to a certain ratio, and is suitable for measuring an unknown high current scene.
  • the current transformer 15 is also used for electrical isolation, and can protect other components in the power adapter. Not damaged by large currents.
  • the operating current of the current transformer 15 is the induced current measured during the operation of the current transformer 15.
  • the operating current of the reference circuit 14 is the current of the reference circuit 14 during operation.
  • the operating current of the reference circuit 14 can be set in advance.
  • the operating current of the reference circuit 14 is used as a reference current, and once set, it is generally a fixed value.
  • FIG. 2 is a schematic structural diagram of another short circuit protection circuit according to an embodiment of the present invention.
  • the short circuit protection circuit 10 includes a switching device 11, a control circuit 12, an acquisition circuit 13, and a reference. Circuit 14 and current transformer 15.
  • the first end 111 of the switching device 11 is connected to the high voltage reference ground of the power adapter, and the second end 112 of the switching device 11 is connected to the first end of the first capacitor C1 of the power adapter through the input coil 51 of the current transformer 15, the first capacitor The second end of the C1 is connected to the low voltage reference ground of the power adapter or the low voltage positive pole.
  • the third end 113 of the switching device 11 is connected to the control end 123 of the control circuit 12.
  • the first detecting end 121 of the control circuit 12 is connected to the output end of the collecting circuit 13.
  • the first input end 131 of the acquisition circuit 13 is connected to one end of the output coil 52 of the current transformer 15, and the second input end 133 of the acquisition circuit 13 is connected to the other end of the output coil 52 of the current transformer 15, the control circuit 12
  • the second detecting end 122 is connected to the output end 141 of the reference circuit 14;
  • the control circuit 12 is configured to compare the current of the output coil 52 of the current transformer 15 collected by the acquisition circuit 13 with the operating current of the reference circuit 14, and output when the current of the output coil 52 of the current transformer 15 is greater than the operating current of the reference circuit 14. The signal is turned off to the switching device 11 to turn off the switching device 11.
  • the control circuit 12 includes a voltage comparator U1.
  • the non-inverting input terminal of the voltage comparator U1 is connected to the output terminal 132 of the acquisition circuit 13.
  • the inverting input terminal of the voltage comparator U1 is connected to the output terminal 141 of the reference circuit 14, and the voltage comparator U1.
  • the output terminal 123 is connected to the third end 113 of the switching device 11.
  • the power supply terminal of the voltage comparator U1 is VDD, and the ground terminal of the voltage comparator U1 is connected to the ground terminal of the output coil 52 of the current transformer 15.
  • the switching device 11 includes a MOS transistor.
  • the gate of the MOS transistor is connected to the output end of the voltage comparator.
  • the first end of the MOS transistor is connected to the high voltage reference ground of the power adapter, and the second end of the MOS transistor.
  • One end of the input coil 51 of the current transformer 15 is connected, and the other end of the input coil 51 is connected to the first end of the first capacitor C1.
  • the MOS transistor is a PMOS transistor.
  • the collecting circuit 13 includes a sampling resistor R1.
  • the first end 132 of the sampling resistor R1 is connected to one end of the output coil 52 of the current transformer 15.
  • the second end 131 of the sampling resistor R1 is connected to the voltage comparator.
  • the output coil 52 of the current transformer 15 and the sampling resistor R1 form a closed loop.
  • the magnitude of the sampling resistor R1 can be set. For example, under normal conditions, the switching device 11 is in an on state, the induced current of the output coil 52 measured by the current transformer 15 is generally less than 0.5 mA, and the voltage of the reference circuit 14 is 1 V. , you can set the resistance R1 to 2000 ⁇ . When the induced current of the output coil 52 of the current transformer 15 is greater than 0.5 mA, the voltage comparator U1 controls the switching device 11 to be turned off to prevent an electric shock.
  • the voltage across the sampling resistor R1 is much larger than the voltage of the reference circuit 14, and the voltage comparator U1 outputs a high level.
  • the switching device PMOS transistor
  • control circuit 12 includes a voltage comparator.
  • control circuit may also include a current comparator for comparing the current on the sampling resistor R1 with the reference circuit 14 (eg, The current level of the reference current source).
  • the MOS transistor can also be an NMOS transistor.
  • the control circuit 12 includes a voltage comparator U1, the inverting input terminal 121 of the voltage comparator U1 is connected to the output terminal 132 of the acquisition circuit 13, and the non-inverting input terminal 122 of the voltage comparator U1 is connected to the reference circuit 14.
  • the output terminal 123 of the voltage comparator U1 is connected to the third terminal 113 of the switching device 11.
  • the switching device 11 includes a MOS transistor.
  • the gate of the MOS transistor is connected to the output terminal 123 of the voltage comparator.
  • the first end of the MOS transistor is connected to the high voltage reference ground of the power adapter, and the second end of the MOS transistor is connected to the input terminal of the current transformer.
  • the current transformer 15 includes a core 53, and the input coil 51 and the output coil 52 are wound around the iron core 53, respectively.
  • the number of turns of the input coil 51 is smaller than the number of turns of the output coil 52.
  • the output coil 52 when a current is generated in the input coil 51, the output coil 52 generates an induced current.
  • the current of the input coil 51 is smaller than the induced current of the output coil 52.
  • the current transformer 15 is used to isolate the high voltage reference ground from the low voltage reference ground or the low voltage positive pole.
  • the reference circuit 14 includes a reference voltage source.
  • the reference circuit 14 can include a reference current source and a reference resistor.
  • the voltage comparator U1 is configured to compare the voltage of R1 across the sampling resistor with the voltage of the reference voltage source, and output a shutdown signal to the switching device 11 when the voltage across the sampling resistor R1 is greater than the voltage of the reference voltage source, so that the switch Device 11 is disconnected.
  • the acquisition circuit 13 detects that the operating current of the current transformer 15 exceeds a certain value, the voltage input by the non-inverting input terminal 122 of the voltage comparator U1 is greater than the input of the inverting input terminal 121.
  • the output terminal 123 of the voltage and voltage comparator U1 outputs a high level to the gate of the PMOS transistor 113 to turn off the PMOS transistor, disconnecting the high voltage reference ground from the low voltage reference ground or the low voltage positive electrode, thereby preventing the electric shock. .
  • FIG. 3 is a schematic structural diagram of a power adapter according to an embodiment of the present invention.
  • the power adapter 100 is used to charge the mobile terminal 200.
  • the power adapter 100 includes a rectifier circuit 20 and a high voltage circuit 30.
  • the rectifier circuit 20 is for converting the input alternating current into a direct current output to the high voltage circuit 30, and the high voltage circuit 30 is for processing the direct current output from the rectifier circuit 20 and controlling the input high voltage of the transformer 40.
  • the transformer 40 converts the input high voltage into an output low voltage output to the low voltage circuit 50 for voltage stabilization processing and rectification processing, and outputs it to the mobile terminal 200.
  • the short circuit protection circuit 10 is configured to detect whether the power adapter 100 is short-circuited, and when the circuit adapter 100 is short-circuited, the short circuit in the power adapter 100 is controlled to be disconnected.
  • the short circuit in the power adapter 100 can include a short circuit between the high voltage reference ground and the low voltage reference ground or the low voltage positive pole.
  • the high voltage circuit 30 includes an inductor filter, a second capacitor, a power chip, and a switch tube.
  • the high voltage circuit is used to control the input of the transformer 40 to be a high voltage.
  • the transformer 40 is for converting a voltage from a high voltage to a multi-winding device of a low voltage output while supplying power to the short circuit protection circuit 10.
  • the low voltage circuit 50 may include a rectifying and filtering circuit, and the rectifying and filtering circuit may include a capacitor, a rectifying device, and the like.
  • the short circuit protection circuit 10 when the power adapter 100 is used to charge the mobile terminal 200, when the short circuit protection circuit 10 detects the short circuit phenomenon, the short circuit protection circuit 10 is turned off, and the power adapter 100 stops supplying power to the mobile terminal 200 to prevent electric shock. effect.
  • FIG. 4 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention.
  • the mobile terminal 200 includes a charging chip 21, a battery 22, and a main board 23, and is moved when the power adapter 100 is used.
  • the charging chip 21 is for receiving the voltage input by the power adapter 100 and charging the battery 22.
  • the power adapter 100 includes the rectifier circuit 20, the high voltage circuit 30, the transformer 40, the low voltage circuit 50, and the short circuit protection circuit 10 shown in FIG.
  • the power adapter 100 when the power adapter 100 is used to charge the mobile terminal 200, when the power adapter 100 detects the short circuit phenomenon, the power adapter 100 is disconnected from the mobile terminal 200, and the power adapter 100 stops supplying power to the mobile terminal 200. Prevent the effects of electric shock.
  • FIG. 5 is a schematic structural diagram of still another mobile terminal disclosed in the implementation of the present invention.
  • the mobile terminal can be any terminal device including a mobile phone, a tablet computer, a PDA (Personal Digital Assistant), a POS (Point of Sales), an in-vehicle computer, and the mobile terminal is used as a mobile phone as an example:
  • FIG. 5 is a block diagram showing a partial structure of a mobile phone related to a mobile terminal provided by an embodiment of the present invention.
  • the mobile phone includes: a radio frequency (RF) circuit 910, a memory 920, an input unit 930, a display unit 940, a sensor 950, an audio circuit 960, a wireless fidelity (WiFi) module 970, and a processor 980. And power supply 990 and other components.
  • RF radio frequency
  • the RF circuit 910 can be used for receiving and transmitting information.
  • RF circuit 910 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like.
  • LNA Low Noise Amplifier
  • RF circuitry 910 can also communicate with the network and other devices via wireless communication.
  • the above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • E-mail Short Messaging Service
  • the memory 920 can be used to store software programs and modules, and the processor 980 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory 920.
  • the memory 920 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function, and the like; the storage data area may store data created according to usage of the mobile phone, and the like.
  • memory 920 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the input unit 930 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset.
  • the input unit 930 can include a fingerprint identification module 931 and other input devices 932.
  • the fingerprint identification module 931 can collect fingerprint data of the user.
  • the input unit 930 may also include other input devices 932.
  • other input devices 932 may include, but are not limited to, one or more of a touch screen, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.
  • the display unit 940 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone.
  • the display unit 940 can include a display screen 941.
  • the display screen 941 can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the fingerprint recognition module 931 and the display screen 941 are used as two separate components to implement the input and input functions of the mobile phone, in some embodiments, the fingerprint recognition module 931 and the display screen 941 may be Integrated to achieve the input and playback functions of the phone.
  • the handset may also include at least one type of sensor 950, such as a light sensor, motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen 941 according to the brightness of the ambient light, and the proximity sensor may turn off the display screen 941 and/or when the mobile phone moves to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity.
  • the mobile phone can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.
  • the gesture of the mobile phone such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration
  • vibration recognition related functions such as pedometer, tapping
  • the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.
  • An audio circuit 960, a speaker 961, and a microphone 962 can provide an audio interface between the user and the handset.
  • the audio circuit 960 can transmit the converted electrical data of the received audio data to the speaker 961 for conversion to the sound signal by the speaker 961; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal by the audio circuit 960. After receiving, it is converted into audio data, and then processed by the audio data playback processor 980, sent to the other mobile phone via the RF circuit 910, or played back to the memory 920 for further processing.
  • WiFi is a short-range wireless transmission technology
  • the mobile phone can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 970, which provides users with wireless broadband Internet access.
  • FIG. 5 shows the WiFi module 970, it can be understood that it does not belong to the essential configuration of the mobile phone, and may be omitted as needed within the scope of not changing the essence of the invention.
  • the processor 980 is the control center of the handset, which connects various portions of the entire handset using various interfaces and lines, by executing or executing software programs and/or modules stored in the memory 920, and invoking data stored in the memory 920, executing The phone's various functions and processing data, so that the overall monitoring of the phone.
  • the processor 980 may include one or more processing units; preferably, the processor 980 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like.
  • the modem processor primarily handles wireless communications. It will be appreciated that the above described modem processor may also not be integrated into the processor 980.
  • the handset also includes a power source 990 (such as a battery) that supplies power to the various components.
  • a power source 990 such as a battery
  • the power source can be logically coupled to the processor 980 through a power management system to manage functions such as charging, discharging, and power management through the power management system.
  • the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.
  • the disclosed apparatus may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un circuit de protection contre les courts-circuits (10), un adaptateur d'alimentation et un terminal mobile. Le circuit de protection contre les courts-circuits comprend un dispositif de commutation (11), un circuit de commande (12), un circuit d'acquisition (13), un circuit de référence (14) et un transformateur de courant (15). Une première extrémité (111) du dispositif de commutation (11) est connectée à une extrémité de masse de référence haute tension de l'adaptateur d'alimentation ; une deuxième extrémité (112) du dispositif de commutation (11) est connectée à une première extrémité d'un premier condensateur (C1) de l'adaptateur d'alimentation au moyen d'une bobine d'entrée (51) du transformateur de courant (15) ; une deuxième extrémité du premier condensateur (C1) est connectée à une extrémité de masse de référence basse tension ou à une électrode positive basse tension de l'adaptateur d'alimentation ; une troisième extrémité (113) du dispositif de commutation (11) est connectée à une extrémité de commande (123) du circuit de commande (12) ; une première extrémité de détection (121) du circuit de commande (12) est connectée à une extrémité de sortie (132) du circuit d'acquisition (13) ; une première extrémité d'entrée (131) du circuit d'acquisition (13) est connectée à une extrémité d'une bobine de sortie (52) du transformateur de courant (15) ; une seconde extrémité d'entrée (133) du circuit d'acquisition (13) est connectée à l'autre extrémité de la bobine de sortie (52) du transformateur de courant (15) ; une seconde extrémité de détection (122) du circuit de commande (12) est connectée à une extrémité de sortie (141) du circuit de référence (14). Le présent circuit de protection contre les courts-circuits, l'adaptateur d'alimentation et le terminal mobile peuvent être utilisés pour empêcher le danger d'un choc électrique lorsqu'un adaptateur d'alimentation charge un terminal mobile.
PCT/CN2018/078872 2017-03-14 2018-03-13 Circuit de protection contre les courts-circuits, adaptateur d'alimentation et terminal mobile WO2018166449A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN201710151543.7 2017-03-14
CN201720247000.0U CN206595696U (zh) 2017-03-14 2017-03-14 一种短路保护电路、电源适配器及移动终端
CN201720247000.0 2017-03-14
CN201710151543.7A CN106849000B (zh) 2017-03-14 2017-03-14 一种短路保护电路、电源适配器及移动终端

Publications (1)

Publication Number Publication Date
WO2018166449A1 true WO2018166449A1 (fr) 2018-09-20

Family

ID=63521706

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/078872 WO2018166449A1 (fr) 2017-03-14 2018-03-13 Circuit de protection contre les courts-circuits, adaptateur d'alimentation et terminal mobile

Country Status (1)

Country Link
WO (1) WO2018166449A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201766400U (zh) * 2010-01-30 2011-03-16 西北师范大学 大功率智能开关电源充电机控制电路
US20110163604A1 (en) * 2010-01-06 2011-07-07 Samsung Electronics Co. Ltd. Power supply circuit of terminal and method for supplying power using the same
CN105375754A (zh) * 2015-11-03 2016-03-02 丹阳奇烨科技有限公司 一种电源适配器
CN105634092A (zh) * 2016-02-26 2016-06-01 北京小米移动软件有限公司 充电电路、带usb端口的充电器和充电系统
CN106849000A (zh) * 2017-03-14 2017-06-13 广东欧珀移动通信有限公司 一种短路保护电路、电源适配器及移动终端
CN206595696U (zh) * 2017-03-14 2017-10-27 广东欧珀移动通信有限公司 一种短路保护电路、电源适配器及移动终端

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110163604A1 (en) * 2010-01-06 2011-07-07 Samsung Electronics Co. Ltd. Power supply circuit of terminal and method for supplying power using the same
CN201766400U (zh) * 2010-01-30 2011-03-16 西北师范大学 大功率智能开关电源充电机控制电路
CN105375754A (zh) * 2015-11-03 2016-03-02 丹阳奇烨科技有限公司 一种电源适配器
CN105634092A (zh) * 2016-02-26 2016-06-01 北京小米移动软件有限公司 充电电路、带usb端口的充电器和充电系统
CN106849000A (zh) * 2017-03-14 2017-06-13 广东欧珀移动通信有限公司 一种短路保护电路、电源适配器及移动终端
CN206595696U (zh) * 2017-03-14 2017-10-27 广东欧珀移动通信有限公司 一种短路保护电路、电源适配器及移动终端

Similar Documents

Publication Publication Date Title
CN107546808B (zh) 一种充电识别电路、识别方法及终端设备
CN107947825B (zh) 天线选择电路以及移动终端
CN107547755B (zh) Usb接口保护方法、移动终端及计算机可读存储介质
CN206595696U (zh) 一种短路保护电路、电源适配器及移动终端
WO2018103191A1 (fr) Procédé et dispositif de charge sans fil
CN106845422B (zh) 一种指纹识别模组、指纹识别方法及移动终端
CN106655381B (zh) 无线充电方法及装置
CN107678989B (zh) Uart与usb复用电路以及移动终端
WO2017161587A1 (fr) Circuit d'alimentation électrique destiné à une charge, et terminal
CN107785961B (zh) 一种串联电池充电方法、移动终端及计算机可读介质
CN107635069A (zh) Uart与usb复用电路以及移动终端
WO2019052291A1 (fr) Procédés de déverrouillage et produits associés
CN106454805A (zh) 一种数据迁移方法及移动终端
KR102831062B1 (ko) 전자기기
CN106786907A (zh) 一种充电电路、方法以及终端
CN106455027A (zh) 一种网络制式调整方法及移动终端
CN106413070A (zh) 一种功率调整方法及移动终端
CN106532876A (zh) 供电控制方法、装置和计算机设备
CN108009116B (zh) MicroUSB接口电路及其移动终端
CN106849000B (zh) 一种短路保护电路、电源适配器及移动终端
CN108415549B (zh) 提高移动终端续航能力的方法、移动终端及可读存储介质
CN118362903A (zh) 电池识别模块、电池识别方法及智能终端
WO2018166449A1 (fr) Circuit de protection contre les courts-circuits, adaptateur d'alimentation et terminal mobile
WO2018166453A1 (fr) Circuit de prise, prise et terminal mobile
CN110620602A (zh) 反向充电与数据传输共用系统、复用数据线和电子装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18767197

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18767197

Country of ref document: EP

Kind code of ref document: A1