WO2023015720A1 - Circuit et appareil de charge bidirectionnelle - Google Patents

Circuit et appareil de charge bidirectionnelle Download PDF

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Publication number
WO2023015720A1
WO2023015720A1 PCT/CN2021/124607 CN2021124607W WO2023015720A1 WO 2023015720 A1 WO2023015720 A1 WO 2023015720A1 CN 2021124607 W CN2021124607 W CN 2021124607W WO 2023015720 A1 WO2023015720 A1 WO 2023015720A1
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WIPO (PCT)
Prior art keywords
module
signal
resistor
main control
transmission module
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PCT/CN2021/124607
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English (en)
Chinese (zh)
Inventor
张水莎
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惠州Tcl云创科技有限公司
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Publication of WO2023015720A1 publication Critical patent/WO2023015720A1/fr

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    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0036—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using connection detecting circuits
    • 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
    • H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • H02J7/00045—Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
    • 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
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries

Definitions

  • the disclosure relates to the technical field of electronic circuits, in particular to a bidirectional charging circuit and device.
  • the purpose of the present disclosure is to provide a bidirectional charging circuit and device, which can realize bidirectional charging by adding a Type-C interface to the original AR host, thereby effectively reducing the waste of resources and platform upgrade fees.
  • the first aspect of the present disclosure relates to a bidirectional charging circuit, which is connected to a power adapter, an external power supply or an external electronic device, and the bidirectional charging circuit includes a first transmission module, a main control module, a power supply module, a logic control module, and a second transmission module and interface modules;
  • the main control module is respectively connected to the first transmission module and the power supply module, the logic control module is also connected to the power supply module, and the first transmission module is also connected to the logic control module and the power supply module module connection;
  • the logic control module is configured to output a first detection signal to the main control module when detecting that the first transmission module is connected to an external electronic device;
  • the first transmission module is used to connect an external electronic device or a power adapter, and output a second detection signal to the main control module when it is detected that the power adapter is connected;
  • the main control module is configured to output a first control signal to the power module according to the first detection signal, or output a second control signal to the power module according to the second detection signal;
  • the power supply module is used to provide electric energy for the external electronic device through the first transmission module according to the first control signal, or receive input from the power adapter through the first transmission module according to the second control signal electric energy;
  • the second transmission module is respectively connected with the first transmission module, the logic control module and the main control module; the second transmission module is used for all the output of the logic control module
  • the first detection signal is output to the main control module
  • the interface module is connected to the first transmission module, the power supply module and the logic control module, and the interface module is used to output the first current detection signal output by the logic control module and the The second current detection signal is output to the main control module.
  • the first transmission module includes a detection unit and a voltage transformation unit; the detection unit is connected to the voltage transformation unit and the logic control module; the detection unit is used for detecting the When the external electronic device is connected, output a first access signal to the logic control module, and when the power adapter is connected, output a second access signal to the main control module.
  • the logic control module includes a control unit and a pull-up unit; the control unit is connected to the first transmission module and the pull-up unit; the pull-up unit is also connected to a power module ; the control unit is used to output the first detection signal to the main control module according to the first access signal; the pull-up unit is used to provide a high level signal for the control unit.
  • the main control module includes a main control chip; the main control chip is connected to the detection unit, and is used to control the power supply according to the first detection signal output by the detection unit
  • the module provides electric energy for the external electronic equipment through the first transmission module, or is used to first generate a second detection signal according to the second access signal output by the detection unit, and then control according to the second detection signal
  • the power module receives the electric energy input by the power adapter through the first transmission module.
  • the power module includes a power control unit and a battery pack; the power control unit is connected to the main control module, the first transmission module and the battery pack; the battery control unit It is used to control the battery pack to provide reverse current according to the first control information, and to control the battery pack to receive charging current to charge the battery pack itself according to the second control information; the battery pack is used to provide current to external electronic equipment Or receive current from the power adapter.
  • the second aspect of the present disclosure relates to a bidirectional charging circuit, which is connected to a power adapter or an external electronic device.
  • the bidirectional charging circuit includes a first transmission module, a main control module, a power supply module and a logic control module;
  • the first transmission module is connected to the power module, the logic control module is also connected to the power module, and the first transmission module is also connected to the logic control module and the power module;
  • the logic control The module is used to output a first detection signal to the main control module when it detects that the first transmission module is connected to an external electronic device;
  • the first transmission module is used to connect an external electronic device or a power adapter, and when it detects output a second detection signal to the main control module when the power adapter is connected;
  • the main control module is used to output a first control signal to the power supply module according to the first detection signal, or
  • the signal outputs a second control signal to the power module;
  • the power module is used to provide power for the external electronic device through the first transmission module
  • the bidirectional charging circuit also includes a second transmission module; the second transmission module is respectively connected to the first transmission module, the logic control module and the main control module; the second transmission module is used to transfer the The first detection signal output by the logic control module is output to the main control module.
  • the first transmission module includes a detection unit and a voltage transformation unit; the detection unit is connected to the voltage transformation unit and the logic control module; the detection unit is used for when the external electronic When the device is connected, a first connection signal is output to the logic control module, and when the power adapter is connected, a second connection signal is output to the main control module.
  • the logic control module includes a control unit and a pull-up unit; the control unit is connected to the first transmission module and the pull-up unit; the pull-up unit is also connected to a power module; The control unit is used to output the first detection signal to the main control module according to the first access signal; the pull-up unit is used to provide a high level signal for the control unit.
  • the main control module includes a main control chip; the main control chip is connected to the detection unit, and is used to control the power module according to the first detection signal output by the detection unit Providing electric energy to the external electronic equipment through the first transmission module, or generating a second detection signal according to the second access signal output by the detection unit, and then controlling the external electronic device according to the second detection signal
  • the power supply module receives the electric energy input by the power adapter through the first transmission module.
  • the detection unit includes a first interface, a first resistor, a second resistor, a third resistor, a fourth resistor, a first electrostatic tube, a second electrostatic tube, a third electrostatic tube, and a fourth electrostatic tube.
  • one end of the first electrostatic tube is connected to the A8 signal port of the first interface, and the second electrostatic tube
  • One end and one end of the first resistor are both connected to the A5 signal end of the first interface, one end of the third electrostatic tube and one end of the second resistor are both connected to the B5 signal end of the first interface, and the The A5 signal end and the B5 signal end of the first interface are also connected to the logic control module, the other end of the first electrostatic tube, the other end of the second electrostatic tube, and the other end of the third electrostatic tube , the other end of the first resistor and the other end of the second resistor are both grounded; one end of the fourth electrostatic tube is connected to the A6 and B6 signal ends of the first interface, and the A6 and B6 of the first interface The signal end is also connected to the transformation unit, the other end of the fourth electrostatic tube is grounded;
  • the voltage transformation unit includes a fifth resistor, a sixth resistor and a transformer; the first pin of the transformer is connected to one end of the sixth resistor, and the fourth pin of the transformer is connected to one end of the sixth resistor.
  • the other end of the sixth resistor is connected to the second transmission module, the second pin of the transformer is connected to one end of the fifth resistor and the second transmission module, and the third pin of the transformer Connect with the other end of the fifth resistor.
  • the control unit includes a logic control chip, a seventh resistor, an eighth resistor, and a fourth capacitor, and the first pin and the second pin of the logic control chip are connected to the first transmission module , the 7th pin, the 8th pin, the 9th pin and the 11th pin of the logic control chip are all connected to the pull-up unit, and the 9th pin of the logic control chip is also connected to the second transmission module and the The pull-up unit is connected; one end of the seventh resistor is connected to the 6th pin of the logic control chip and one end of the fourth capacitor, and the other end of the seventh resistor is connected to the 12th pin of the logic control chip.
  • the pins are all connected to the power supply; the eighth resistor is connected to the 5th pin and the 12th pin of the logic control chip, and the 12th pin of the logic control chip is also connected to the power supply.
  • the pull-up unit includes a ninth resistor, a tenth resistor, an eleventh resistor, and a twelfth resistor, one end of the ninth resistor, one end of the tenth resistor, the first One end of the eleventh resistor and one end of the twelfth resistor are connected to the power port, the other end of the ninth resistor, the other end of the tenth resistor, the other end of the eleventh resistor and the The other ends of the twelfth resistors are both connected to the second transmission module.
  • the bidirectional charging circuit further includes an interface module, the interface module is connected with the first transmission module, the power supply module and the logic control module, and the interface module is used to connect the The first current detection signal and the second current detection signal output by the logic control module are output to the main control module.
  • the power module includes a power control unit and a battery pack; the power control unit is connected to the main control module, the first transmission module and the battery pack; the battery control unit It is used to control the battery pack to provide reverse current according to the first control information, and to control the battery pack to receive charging current to charge the battery pack itself according to the second control information; the battery pack is used to provide current to external electronic equipment Or receive current from the power adapter.
  • the power control unit is an RK816 chip.
  • the main control chip is an RK3229 chip.
  • the first detection information is a low-level signal, and the second detection information is a high-level signal;
  • the first control information is downlink port mode information or plug-and-play mode information ;
  • the second control information is uplink port mode information.
  • the third aspect of the present disclosure relates to a bidirectional charging device, which includes a PCB board, and the PCB board is provided with the above-mentioned bidirectional charging circuit.
  • the bidirectional charging circuit includes a first transmission module, a main control module, a power supply module and a logic control module; the first transmission module is used to connect external electronic equipment or Power adapter; the logic control module is used to output the first detection signal to the main control module when it detects that the first transmission module is connected to an external electronic device, or output the second detection signal to the main control module when it detects that the first transmission module is connected to a power adapter
  • the main control module; the main control module is used to output the first control signal to the power module according to the first detection signal, or output the second control signal to the power module according to the second detection signal; the power module is used to output the first control signal to the power module according to the first control signal.
  • the transmission module provides electric energy for external electronic equipment, or receives electric energy input by the power adapter through the first transmission module according to the second control signal to provide electric energy for the main control module; the present disclosure provides bidirectional charging for the power supply module by adding the first transmission module, thereby reducing Waste of resources.
  • FIG. 1 is a structural block diagram of a bidirectional charging circuit provided by the present disclosure
  • FIG. 4 is a circuit diagram of a logic control module in a bidirectional charging circuit provided by the present disclosure
  • FIG. 5 is a circuit diagram of a second transmission module in the bidirectional charging circuit provided by the present disclosure.
  • FIG. 6 is a circuit diagram of an interface module in the bidirectional charging circuit provided by the present disclosure.
  • the bidirectional charging circuit and device provided in the present disclosure can implement bidirectional charging by adding a Type-C interface to the original AR host, thereby effectively reducing resource waste and platform upgrade costs.
  • radio frequency front-end circuit design scheme is described below through specific exemplary embodiments. It should be noted that the following embodiments are only used to explain the disclosed technical solutions and do not specifically limit them:
  • a bidirectional charging circuit 10 provided by the present disclosure is connected to a power adapter 20, an external power supply 30 or an external electronic device 40, and the bidirectional charging circuit includes a first transmission module 100, a logic control module 200, a main control module 300 and power module 400; the main control module 300 is connected to the first transmission module 100 and the power module 400 respectively, the logic control module 200 is also connected to the power module 400, and the first transmission
  • the module 100 is also connected to the logic control module 200 and the power supply module 400; the logic control module 200 is used to output a first detection signal to the first transmission module 100 when it detects that the external electronic device 40 is connected.
  • the main control module 300 is further configured to output a first current detection signal to the main control module 300 when detecting that the first transmission module 100 is connected to an external power supply 30 or to detect that the first transmission module 100 is connected output the second current detection signal to the main control module 300 when it is the power adapter 20;
  • the second detection signal is sent to the main control module 300;
  • the main control module 300 is used to output a first control signal to the power module 400 according to the first detection signal, or output a second control signal according to the second detection signal.
  • the control signal is sent to the power module 400, and the main control module 300 is also used to output a first current control signal to the power module 400 according to the first current detection signal or output a second current control signal according to the second current detection signal.
  • the current control signal is sent to the power supply module 400; the power supply module 400 is used to provide electric energy for the external electronic device 40 through the first transmission module 100 according to the first control signal, or to supply power to the external electronic device 40 according to the second control signal Receiving the power inputted by the power adapter 20 through the first transmission module 100, the power module 400 is also configured to provide power for itself in the first current mode according to the first current control information or configured according to the second current control information Powering itself for the second current mode.
  • the first detection information is a low-level signal; the second detection information is a high-level signal; the first control information is DFP (Downstream Facing Port: downstream port) mode information or OTG (OTG: On -The-Go: plug and play) mode information; the second control information is UFP (Upstream Facing Port: uplink port) mode information; the first current detection information is a small current signal; the second current information is a large current signal; the first control signal is a low current mode signal; the second control signal is a medium current mode signal or a high current mode signal; the first current mode is a low current mode; the second current mode is medium or high current mode.
  • the logic control module 200 when the first transmission module 100 is connected to the external electronic device 40, firstly, the logic control module 200 outputs the first detection signal to the main control module 300, and secondly, the main control module 300 outputs the first detection signal according to the first detection signal.
  • a control message is sent to the power supply module 400, and finally, the power supply module 400 provides electric energy for the external electronic device 40 through the first transmission module 100 according to the first control message.
  • the logic control module 200 When the first transmission module 100 is connected to the external power supply 30, the logic control module 200 outputs a first current detection signal to the main control module 300, and the main control module 300 outputs the first current detection signal according to the first current detection signal.
  • a current control information is sent to the power module 400, and the power module 400 is configured to provide electric energy for itself in the first current mode according to the first current control information.
  • the first transmission module 100 When the first transmission module 100 is connected to the power adapter 20, first, the first transmission module 100 outputs a second detection signal to the main control module 300, and at the same time, the logic control module 200 outputs a second current detection signal to the main control module 300; secondly, the main control module 300 outputs a second control signal to the power module 400 according to the second detection signal, and outputs a second current control signal according to the second current detection signal To the power module 400, finally, the power module 400 receives the electric energy input by the power adapter 20 through the first transmission module 100 according to the second control signal, and configures the second current control information according to the second current control information. Current mode supplies power to itself.
  • the logic control module 200 outputs different level signals to the main control module 300 according to whether the first transmission module 100 is connected to the external electronic device 40 or the power adapter 20, and the main control module 300 then According to the level signal, when the first transmission module 100 is connected to the external electronic device 40, control the power supply module 400 to reversely provide power for the external electronic device 40 through the first transmission module 100; and When the first transmission module 100 is connected to the power adapter 20, the power adapter 20 is controlled to charge the power module 400 through the first transmission module 100, thereby realizing bidirectional charging of the first transmission module 100 simply and efficiently; Also, the logic control module 200 outputs different current detection signals to the main control module 300 according to whether the first transmission module 100 is connected to the external power supply 30 or the power adapter 20, and the main control module 300 outputs a different current detection signal to the main control module 300 according to the current detection signal, when the first transmission module 100 is connected to the external power supply 30 or the power adapter 20, control the power supply module 400 to configure the corresponding current mode according to different current control information to provide
  • the bidirectional charging circuit further includes a second transmission module 500; the second transmission module 500 is connected with the first transmission module 100, the logic control module 200, the power supply module 400 and the The module 300 is connected; the second transmission module 500 is configured to output the first detection signal output by the logic control module 200 to the main control module 300 .
  • the logic control module 200 outputs the first detection signal to the second transmission module 500, and the second transmission module 500 transmits the first detection signal to the main control module 300, so that the main control module 300 performs the next step;
  • the second transmission module 500 is mainly used to transmit the first detection signal to the main control module 300, so as to notify the main control module 300 that there is an external electronic device 40 access.
  • the bidirectional charging circuit further includes an interface module 600, the interface module 600 is connected with the first transmission module 100, the power supply module 400 and the logic control module 200, and the interface module 600 is used to connect The first current detection signal and the second current detection signal output by the logic control module 200 are output to the main control module 300 .
  • the logic control module 200 when the first transmission module 100 is connected to the external power supply 30, firstly, the logic control module 200 outputs a first current detection signal to the interface module 600, and secondly, the interface module 600 sends the first The current detection signal is transmitted to the main control module 300, and then, the main control module 300 outputs a first current control signal to the power module 400 according to the first current detection signal, and finally, the power module 400 A current control information is configured for the first current mode to provide electric energy for itself.
  • the logic control module 200 When the first transmission module 100 is connected to the power adapter 20, first, the logic control module 200 outputs the second current detection signal to the interface module 600, and secondly, the interface module 600 outputs the second current detection signal Then, the main control module 300 outputs a second current control signal to the power module 400 according to the second current detection signal, and finally, the power module 400 controls the current according to the second current
  • the information is configured such that the second current mode provides power for itself.
  • the interface module 600 outputs the first current detection signal and the second current detection signal to the main control module 300 to notify the main control module 300 that an external power supply 30 or a power adapter 20 is connected.
  • the first transmission module 100 includes a detection unit 110 and a voltage transformation unit 120; the detection unit 110 is connected to the voltage transformation unit 120 and the logic control module 200; The detection unit 110 is used for outputting a first access signal to the logic control module 200 when the external electronic device 40 is connected, and outputting a second access signal to the logic control module 200 when the power adapter 20 is connected.
  • Main control module 300 Main control module 300.
  • the detection unit 110 when the detection unit 110 is connected to the external electronic device 40, the detection unit 110 outputs the first access signal to the logic control module 200, so that the logic control module 200 performs the next operation; similarly, when the detection unit 110 When the power adapter 20 is connected, the detection unit 110 outputs a second access signal to the main control module 300 so that the main control module 300 can perform the next operation.
  • the detection unit 110 is used to output different access signals when it is detected that the external electronic device 40 or the power adapter 20 is connected to it, so as to effectively generate a circuit-connected external electronic device 40 or the power adapter 20 that matches the circuit. access signal.
  • the logic control module 200 includes a control unit 210 and a pull-up unit 220;
  • the pull-up unit 220 is connected; the pull-up unit 220 is also connected to the second transmission module 500 and the power supply module 400; the control unit 210 is configured to output the first detection signal according to the first access signal The signal is sent to the main control module 300; the pull-up unit 220 is used to provide the control unit 210 with a second detection signal.
  • the detection unit 110 when the detection unit 110 is connected to the external electronic device 40, the detection unit 110 outputs the first access signal to the control unit 210, and the control unit 210 controls the pull-up unit 220 to output the first access signal according to the first access signal.
  • a detection signal is sent to the second transmission module 500, and the second transmission module 500 transmits the first detection signal to the main control module 300, and the main control module 300 outputs according to the first detection signal.
  • the first control information is sent to the power supply module 400, and the power supply module 400 provides electric energy for the external electronic device 40 through the first transmission module 100 according to the first control information; through the control unit 210 according to the first access signal
  • the pull-up unit 220 outputs the first detection signal to the second transmission module 500, thereby effectively converting the first access signal into a first detection signal that can be transmitted by the second transmission module 500, that is, to connect the external electronic device 40
  • the information is converted into a low-level signal that can be transmitted by the USB interface.
  • the main control module 300 includes a main control chip; the main control chip is connected to the detection unit 110 for controlling the power supply module 400 according to the first detection signal output by the detection unit 110 Provide electric energy for the external electronic device 40 via the first transmission module 100, or for generating a second detection signal according to the second access signal output by the detection unit 110, and then generate a second detection signal according to the second detection
  • the signal controls the power module 400 to receive the electric energy input by the power adapter 20 through the first transmission module 100, and the main control chip is also used to control the configuration of the power module 400 according to the first current detection signal. Provide electric energy for itself in the first current mode, or control the power module 400 to be configured to provide electric energy for itself in the second current mode according to the second current detection signal.
  • the main control chip when the second transmission module 500 transmits the first detection signal to the main control chip, the main control chip outputs first control information to the power supply module 400 according to the first detection signal, so The power supply module 400 provides power to the external electronic device 40 through the first transmission module 100 according to the first control information.
  • the main control chip When the control unit 210 outputs the first current detection signal to the main control chip, the main control chip outputs the first current control information to the power module 400 according to the first current detection signal, and the power module 400 according to the first current detection signal A current control information is configured for the first current mode to provide electric energy for itself.
  • the detection unit 110 When the detection unit 110 is connected to the power adapter 20, the detection unit 110 outputs a second access signal to the main control chip, and the main control chip generates a second detection signal according to the second access signal, and then according to the first The second detection signal outputs a second control signal to the power module 400 , and the power module 400 receives the electric energy input by the power adapter 20 through the first transmission module 100 according to the second control information.
  • the main control chip controls the power adapter 20 to supply power to the power module 400 through the first transmission module 100, or controls the power module 400 to supply power to the external electronic device 40 through the first transmission module 100. Charging, thereby effectively realizing the bidirectional charging of the first transmission module 100 .
  • the main control chip is RK3229 chip, which is a high-performance quad-core application processor, mainly used in smart TV boxes.
  • the power module 400 includes a power control unit and a battery pack; the power control unit is connected to the main control module 300, the first transmission module 100 and the battery pack; the battery control unit 210 is used to Control the battery pack to provide reverse current according to the first control information, and control the battery pack to receive charging current to charge the battery pack itself according to the second control information; the battery pack is used to provide current to the external electronic device 40 Or receive the current of the power adapter 20 .
  • the power control unit controls the battery pack to pass through the first transmission module 100 according to the first control information.
  • the external electronic device 40 provides electric energy.
  • the power control unit When the main control chip generates a second detection signal according to the second access signal, and then outputs a second control signal to the power control unit according to the second detection signal, the power control unit The battery pack is controlled to receive the electric energy input by the power adapter 20 via the first transmission module 100 .
  • the power control unit When the main control chip outputs first current control information to the power control unit according to the first current detection signal, the power control unit is configured to provide the battery pack with the first current mode according to the first current control information. electrical energy.
  • the power control unit When the main control module 300 outputs a second current control signal to the power control unit according to the second current detection signal, the power control unit is configured to provide electric energy for the battery pack in the second current mode according to the second current control information .
  • the power supply control unit correspondingly controls whether the battery pack charges itself or reversely supplies power, thereby effectively controlling the charging and discharging state of the battery pack according to different control information. Moreover, the power supply control unit correspondingly controls the battery pack to match different charging current modes according to different current control information, thereby effectively realizing the control of the charging current mode of the battery pack according to different current control information.
  • the power control unit is RK816 chip, which is a kind of power management chip, mainly used in conjunction with RK3229 chip.
  • the detection unit 110 includes a first interface J1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first electrostatic tube D1, a second Two electrostatic tubes D2, the third electrostatic tube D3, the fourth electrostatic tube D4, the fifth electrostatic tube D5, the transient diode TVS, the first capacitor C1, the second capacitor C2 and the third capacitor C3; the first electrostatic tube D1 One end of the first interface J1 is connected to the A8 signal port, one end of the second electrostatic tube D2 and one end of the first resistor R1 are both connected to the A5 signal end of the first interface J1, and the third One end of the electrostatic tube D3 and one end of the second resistor R2 are both connected to the B5 signal end of the first interface J1, and both the A5 signal end and the B5 signal end of the first interface J1 are also connected to the logic control module 200 , the other end of the first electrostatic tube D
  • the first interface J1 passes the A5 signal of the first interface J1
  • the terminal and the B5 signal terminal output the first access signal to the control unit 210, so that the control unit 210 can perform the next operation.
  • the control unit 210 When the A5 signal terminal and B5 signal terminal of the first interface J1 are connected to the external power supply 30, the control unit 210 outputs the first current detection signal to the interface module 600, and the interface module 600 outputs the first current detection signal It is transmitted to the main control chip, so that the main control chip can perform the next operation.
  • the first interface J1 When the A5 signal terminal and B5 signal terminal of the first interface J1 are connected to the power adapter 20, the first interface J1 outputs the second detection signal and the At the same time, the control unit 210 outputs the second current detection signal to the interface module 600, and the interface module 600 transmits the second current detection signal to the main control chip, so that the main control chip Proceed to the next step; wherein, the first interface J1 is a Type-C interface.
  • the transient diode TVS is used to reduce various surge pulses;
  • the electrostatic tube is used to weaken the influence of ESD (Electro-Static discharge: electrostatic discharge).
  • the transformation unit 120 includes a fifth resistor R5, a sixth resistor R6 and a transformer; the first pin of the transformer is connected to one end of the sixth resistor R6, and the fourth pin of the transformer The other end of the sixth resistor R6 is connected to the second transmission module 500, the second pin of the transformer is connected to one end of the fifth resistor R5 and the second transmission module 500, and the transformer The third pin is connected to the other end of the fifth resistor R5.
  • the control unit 210 includes a logic control chip U1, a seventh resistor R7, an eighth resistor R8, and a fourth capacitor C4, and the first pin and the second pin of the logic control chip U1 are both Connected to the first transmission module 100, the 7th pin, 8th pin, 9th pin and 11th pin of the logic control chip U1 are all connected to the pull-up unit 220, the 1st pin of the logic control chip U1 Pin 9 is also connected to the second transmission module 500 and the pull-up unit 220; one end of the seventh resistor R7 is connected to the sixth pin of the logic control chip U1 and one end of the fourth capacitor C4, The other end of the seventh resistor R7 and the 12th pin of the logic control chip U1 are connected to the power supply; the eighth resistor R8 is connected to the 5th pin and the 12th pin of the logic control chip U1, and the The 12th pin of the logic control chip U1 is also connected to the power supply.
  • the first interface J1 when the first interface J1 is connected to the external electronic device 40, the first interface J1 outputs a first access signal to the logic control chip U1, and the logic control chip U1 controls the pull-up signal according to the first access signal.
  • the unit 220 outputs the first detection signal to the second transmission module 500 via the 9th pin of the logic control chip U1 (OTG_ID port in this embodiment), so that the second transmission module 500 can perform the next operation.
  • pins 7 and 8 of the logic control chip U1 When the first interface J1 is connected to the external power supply 30, pins 7 and 8 of the logic control chip U1 output a first current detection signal to the interface module 600, so that the interface module 600 can perform the next operation.
  • the 7th and 8th pins of the logic control chip U1 output a second current detection signal to the interface module 600, so that the interface module 600 can proceed to the next step. operate.
  • the pull-up unit 220 includes a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11 and a twelfth resistor R12, one end of the ninth resistor R9, one end of the tenth resistor R10 , one end of the eleventh resistor R11 and one end of the twelfth resistor R12 are both connected to the power module 400, the other end of the ninth resistor R9, the other end of the tenth resistor R10, the second The other end of the eleventh resistor R11 and the other end of the twelfth resistor R12 are both connected to the second transmission module 500 .
  • the second transmission module 500 includes a second interface J2, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a fifth capacitor C5, a sixth capacitor C6 and a Seventh capacitor C7; one end of the thirteenth resistor R13 is connected to the V11 signal end of the second interface J2, one end of the fourteenth resistor R14 is connected to the V10 signal end of the second interface J2, and the One end of the fifth capacitor C5 is connected to the T10 signal end of the second interface J2 and the power module 400, the other end of the thirteenth resistor R13, the other end of the fourteenth resistor R14 are connected to the fifth capacitor The other ends of C5 are both grounded; one end of the fifteenth resistor R15 is connected to one end of the sixth capacitor C6 and the T11 signal end of the second interface J2, and the other end of the fifteenth resistor R15 is connected to the T11 signal end of the second interface J2. One end of the seventh capacitor C7 is connected to
  • the logic control chip U1 controls the pull-up unit 220 to output the first detection signal according to the first access signal
  • the first detection signal is transmitted to the The second interface J2
  • the second interface J2 transmits the first detection signal to the main control chip, so that the main control chip can perform the next operation.
  • the first detection signal output by the logic control chip U1 is effectively and stably transmitted to the main control chip through the second interface J2, thereby notifying the main control chip that an external electronic device 40 is connected; wherein, the second interface J2 is USB interface.
  • the interface module 600 includes a third interface J3, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor, a nineteenth resistor, a twentieth resistor R20, an eighth capacitor C8, the ninth capacitor C9, the tenth capacitor C10, the sixth electrostatic tube D6 and the first switch S1; the N20 signal end of the third interface J3 is connected to one end of the eighth capacitor C8, and the third interface J3
  • the U10 signal end of the U10 is connected to one end of the ninth capacitor C9, one end of the sixteenth resistor R16, one end of the seventeenth resistor R17 and the first transmission module 100, and the third interface J3
  • the G14 signal terminal and one end of the tenth capacitor C10 are both connected to the power module 400, the K19 signal terminal of the third interface J3 is connected to one end of the eighteenth resistor, and the L20 signal terminal of the third interface J3 connected to one end of the nineteenth resistor, the H16 signal end of the third
  • the logic control chip U1 when the first interface J1 is connected to the external power supply 30, the logic control chip U1 outputs the first current detection signal to the third interface J3, and the third interface J3 transmits the first current detection signal to the the main control chip, so that the main control chip can perform the next operation.
  • the logic control chip U1 When the first interface J1 is connected to the power adapter 20, the logic control chip U1 outputs the second current detection signal to the third interface J3, and the third interface J3 transmits the second current detection signal to the main control chip, so that the main control chip can perform the next operation.
  • the different detection signals output by the logic control chip U1 are effectively and stably transmitted to the main control chip, thereby notifying the first interface J1 that different charging devices are connected; wherein, the third interface J3 is GPIO interface.
  • the Type-C interface When the TYPE_CC1 and TYPE_CC2 ports of the Type-C interface are connected to the external electronic device 40, first, the Type-C interface outputs the first access signal to the logic control chip through the first pin and the second pin of the logic control chip U1 U1, the logic control chip U1 outputs a low-level signal to the USB interface through the OTG_ID port of the logic control chip U1 according to the first access signal, and secondly, the USB interface transmits the low-level signal to Main control chip, the main control chip outputs DFP mode information to the power control unit according to the low-level signal, and finally, the power control unit controls the battery pack through the Type-C interface according to the DFP mode information providing electric energy for the external electronic device 40;
  • the Type-C interface When the TYPE_CC1 and TYPE_CC2 ports of the Type-C interface are connected to the power adapter 20, first, the Type-C interface outputs a second access signal to the main control chip, and the main control chip generates a high Level signal, and then output UFP mode information to the power control unit according to the high level signal, and finally, the power control unit controls the battery pack to receive the power input from the power adapter 20 through the Type-C interface according to the UFP mode information electrical energy.
  • the logic control chip U1 when the Type-C interface is connected to an external electronic device 40, the logic control chip U1 outputs a low-level signal and transmits it to the main control chip through the USB interface to notify the main control chip that an external electronic device 40 is connected, and the main control chip outputs DFP mode Information to the power control unit, at this time, the power control unit controls the battery pack to provide power for the external electronic device 40 through the Type-C interface; when the Type-C interface is connected to the power adapter 20, the main control chip outputs UFP The mode information is sent to the power control unit. At this time, the power control unit controls the battery pack to receive the electric energy input by the power adapter 20 through the Type-C interface.
  • the logic control chip U1 When the TYPE_CC1 and TYPE_CC2 ports of the Type-C interface are connected to the external power supply 30, first, the logic control chip U1 outputs a small current signal to the GPIO interface, and the GPIO interface transmits the small current signal to the main control chip, secondly, the main control chip outputs a low current mode signal to the power control unit according to the small current signal, and finally, the power control unit is configured to receive the external power supply 30 in a low current mode according to the low current mode signal Provides power to the battery pack.
  • the logic control chip U1 When the TYPE_CC1 and TYPE_CC2 ports of the Type-C interface are connected to the power adapter 20, first, the logic control chip U1 outputs a high-current signal to the GPIO interface, and the GPIO interface transmits the high-current signal to the main control Chip, secondly, if it is connected to a low-power power adapter 20, the main control chip outputs a medium current mode signal to the power control unit according to the high-current signal; if it is connected to a high-power power adapter 20, the The main control chip outputs a high current mode signal to the power control unit according to the high current signal; finally, the power control unit is configured as a medium current mode or a high current mode according to the medium current mode signal or the high current mode signal Mode reception
  • the power adapter 20 provides power for the battery pack.
  • the logic control chip U1 when the Type-C interface is connected to the external power supply 30, the logic control chip U1 outputs a small current signal and transmits it to the main control chip through the GPIO interface, and the main control chip outputs a low current mode signal to the power control chip according to the small current signal. unit, at this time, the power control unit is configured to receive the external power supply 30 in low current mode according to the low current mode signal to provide electric energy for the battery pack.
  • the logic control chip U1 When the Type-C interface is connected to the power adapter 20, the logic control chip U1 outputs a large current signal and transmits it to the main control chip through the GPIO interface. At this time, the main control chip will give priority to judging the power of the power adapter 20.
  • the medium current mode signal is sent to the power control unit, and the power control unit is configured according to the medium current mode signal to receive the external power supply 30 in the medium current mode to provide electric energy for the battery pack; if it is high-power, then output the high current mode signal to the power control unit, The power control unit is configured to receive the external power supply 30 in high current mode according to the high current mode signal to provide electric energy for the battery pack;
  • the present disclosure also provides a bidirectional charging device, including a PCB board, on which the bidirectional charging circuit 10 as described above is provided. Since the circuit has been described in detail above, details will not be repeated here. .
  • the present disclosure provides a bidirectional charging circuit and device.
  • the bidirectional charging circuit includes a first transmission module, a main control module, a power supply module, and a logic control module; the logic control module is used to detect that the first transmission module Output the first detection signal to the main control module when the external electronic device is connected; the first transmission module is used to connect the external electronic device or power adapter, and output the second detection signal to the main control module when it is detected that the power adapter is connected ;
  • the main control module is used to output the first control signal to the power module according to the first detection signal, or output the second control signal to the power module according to the second detection signal;
  • the external electronic equipment provides electric energy, or receives the electric energy input by the power adapter through the first transmission module according to the second control signal to provide electric energy to the main control module; the present disclosure reduces the waste of resources by adding the first transmission module to bidirectionally charge the power supply module.

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

Abstract

La présente divulgation concerne un circuit et un appareil de charge bidirectionnelle. Le circuit de charge bidirectionnelle comprend un premier module de transmission, un module de commande principal, un module de source d'alimentation et un module de commande de logique, le module de commande de logique étant utilisé pour délivrer un premier signal de détection au module de commande principal lorsqu'il est détecté que le premier module de transmission est connecté à un dispositif électronique externe ; le premier module de transmission est utilisé pour être connecté au dispositif électronique externe ou à un adaptateur de puissance, et pour délivrer un second signal de détection au module de commande principal lorsqu'il est détecté que le premier module de transmission est connecté à l'adaptateur d'alimentation ; le module de commande principal est utilisé pour délivrer un premier signal de commande au module de source d'alimentation en fonction du premier signal de détection, ou pour délivrer un second signal de commande au module de source d'alimentation en fonction du second signal de détection ; et le module de source d'alimentation est utilisé pour alimenter le dispositif électronique externe par l'intermédiaire du premier module de transmission selon le premier signal de commande, ou pour recevoir, selon le second signal de commande, une énergie électrique entrée par l'adaptateur d'alimentation par l'intermédiaire du premier module de transmission de façon à alimenter le module de commande principal. Dans la présente divulgation, un premier module de transmission est ajouté pour effectuer une charge bidirectionnelle sur un module de source d'alimentation, ce qui permet de réduire le gaspillage de ressources.
PCT/CN2021/124607 2021-08-12 2021-10-19 Circuit et appareil de charge bidirectionnelle WO2023015720A1 (fr)

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CN202110926408.1 2021-08-12

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090021965A1 (en) * 2007-07-20 2009-01-22 Samsung Sdi Co., Ltd. Electronic device capable of supplying power bi-directionally through port and method of operating the same
CN202798027U (zh) * 2012-05-17 2013-03-13 兰家林 一种单usb接口的双向供电电路
CN104182020A (zh) * 2013-05-23 2014-12-03 中兴通讯股份有限公司 一种基于单端口实现双向供电的装置及方法
CN111342508A (zh) * 2020-01-20 2020-06-26 广州裕芯电子科技有限公司 单口双向的移动电源管理芯片及移动电源
CN211427334U (zh) * 2020-08-03 2020-09-04 武汉精立电子技术有限公司 接口设备、接口转换设备及图形信号发生器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090021965A1 (en) * 2007-07-20 2009-01-22 Samsung Sdi Co., Ltd. Electronic device capable of supplying power bi-directionally through port and method of operating the same
CN202798027U (zh) * 2012-05-17 2013-03-13 兰家林 一种单usb接口的双向供电电路
CN104182020A (zh) * 2013-05-23 2014-12-03 中兴通讯股份有限公司 一种基于单端口实现双向供电的装置及方法
CN111342508A (zh) * 2020-01-20 2020-06-26 广州裕芯电子科技有限公司 单口双向的移动电源管理芯片及移动电源
CN211427334U (zh) * 2020-08-03 2020-09-04 武汉精立电子技术有限公司 接口设备、接口转换设备及图形信号发生器

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