WO2020088388A1 - 充电控制电路、充电电路及充电控制方法 - Google Patents

充电控制电路、充电电路及充电控制方法 Download PDF

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Publication number
WO2020088388A1
WO2020088388A1 PCT/CN2019/113593 CN2019113593W WO2020088388A1 WO 2020088388 A1 WO2020088388 A1 WO 2020088388A1 CN 2019113593 W CN2019113593 W CN 2019113593W WO 2020088388 A1 WO2020088388 A1 WO 2020088388A1
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WO
WIPO (PCT)
Prior art keywords
voltage
communication interface
control
charging
circuit
Prior art date
Application number
PCT/CN2019/113593
Other languages
English (en)
French (fr)
Inventor
尹云鹏
Original Assignee
维沃移动通信有限公司
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
Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to EP19880248.0A priority Critical patent/EP3876382A4/en
Publication of WO2020088388A1 publication Critical patent/WO2020088388A1/zh
Priority to US17/241,939 priority patent/US11742684B2/en

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Classifications

    • 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
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • 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
    • 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
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/30—Charge provided using DC bus or data bus of a computer
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/10—The network having a local or delimited stationary reach
    • H02J2310/20—The network being internal to a load
    • H02J2310/22—The load being a portable electronic device

Definitions

  • the present disclosure relates to the field of communication technology, and in particular, to a charging control circuit, a charging circuit, and a charging control method.
  • the charging control circuit of the mobile power supply includes an automatic charging control circuit and a manual charging control circuit.
  • the manual charging control circuit is generally provided with a switch, and the user manually controls the closing of the switch, so that the power output is manually turned on.
  • the automatic charging control circuit can automatically detect the load and start the power supply output after the mobile power supply is inserted into the charging device.
  • the implementation method of the automatic charging control circuit includes an integrated circuit (Integrated Circuit), and a detection circuit built by a discrete device. Due to the complexity of the related charge control circuit built by integrated circuit IC and discrete device, the reliability of the related charge control circuit is relatively poor.
  • the related charging control circuit has a problem of poor reliability.
  • Some embodiments of the present disclosure provide a charging control circuit, a charging circuit, and a charging control method to solve the problem of poor reliability of related charging control circuits.
  • some embodiments of the present disclosure provide a charging control circuit, including:
  • the communication interface housing includes a first conductive portion, a second conductive portion, and an insulating portion, and the insulating portion is disposed between the first conductive portion and the second conductive portion;
  • the first conductive portion is connected to a first voltage terminal; the first voltage terminal is used to access the first voltage;
  • the second conductive portion is connected to a second voltage terminal; the second voltage terminal is used to access a second voltage, and the first voltage is greater than the second voltage;
  • the control sub-circuit is respectively connected to the first conductive part and the communication interface, and is used to control to start communication with the first voltage when the voltage of the first conductive part is changed from the first voltage to the second voltage
  • a power supply device electrically connected to the interface so that the power supply device provides a charging voltage for the communication interface.
  • some embodiments of the present disclosure also provide a charging circuit, including:
  • the above charging control circuit and the power supply device electrically connected to the communication interface of the charging control circuit.
  • some embodiments of the present disclosure also provide an electronic device, including the above charging circuit.
  • some embodiments of the present disclosure also provide a charging control method, which is applied to the above charging circuit, and the method includes:
  • the power supply device electrically connected to the communication interface is controlled to start so that the power supply device provides the charging voltage to the communication interface.
  • the charging control circuit includes: a communication interface housing, a communication interface, and a control sub-circuit; the communication interface housing includes a first conductive portion, a second conductive portion, and an insulating portion, and the insulating portion is provided on the Between the first conductive portion and the second conductive portion; the first conductive portion is connected to the first voltage terminal; the first voltage terminal is used to access the first voltage; the second conductive portion and the second The voltage terminal is connected; the second voltage terminal is used to access a second voltage, the first voltage is greater than the second voltage; the control subcircuit is connected to the first conductive portion and the communication interface, When the voltage of the first conductive part is detected to be changed from the first voltage to the second voltage, control to start the power supply device electrically connected to the communication interface, so that the power supply device provides charging for the communication interface Voltage.
  • the communication interface housing includes a first conductive portion, a second conductive portion, and an insulating portion, and the insulating portion is provided on the Between the first conductive portion and the
  • FIG. 1 is one of the principle diagrams of the charging control circuit provided by some embodiments of the present disclosure
  • FIG. 2 is a second schematic diagram of a charging control circuit provided by some embodiments of the present disclosure.
  • FIG 3 is one of the structural diagrams of the communication interface housing provided by some embodiments of the present disclosure.
  • FIG. 4 is a second structural diagram of a communication interface housing provided by some embodiments of the present disclosure.
  • FIG. 5 is a schematic diagram of a charging circuit provided by some embodiments of the present disclosure.
  • FIG. 8 is the third charging control method provided by some embodiments of the present disclosure.
  • FIG. 1 is a schematic diagram of a charging control circuit provided by some embodiments of the present disclosure.
  • the charging control circuit 100 includes a communication interface housing 102, a communication interface 103, and a control sub-circuit 101;
  • the interface housing 102 includes a first conductive portion 1021, a second conductive portion 1023, and an insulating portion 1022, the insulating portion 1022 is disposed between the first conductive portion 1021 and the second conductive portion 1023; the first conductive The portion 1021 is connected to a first voltage terminal; the first voltage terminal is used to access a first voltage; the second conductive portion 1023 is connected to a second voltage terminal; the second voltage terminal is used to input a second voltage;
  • the control sub-circuit 101 is respectively connected to the first conductive portion 1021 and the communication interface 103, and is used to control the start when the voltage of the first conductive portion 1021 is changed from the first voltage to the second voltage
  • a power supply device (not shown) electrically connected to the communication interface
  • the power supply device may be a mobile power supply device including a power supply control chip and a charging power supply.
  • the communication interface may include a universal serial bus (Universal Serial Bus, USB) interface, and the communication interface housing may be a USB interface housing.
  • USB Universal Serial Bus
  • the voltage connected to the first conductive part 1021 is the first voltage.
  • the connected load can connect the first conductive part 1021 and the second conductive
  • the portion 1023 is turned on so that the voltage of the first conductive portion 1021 changes from the first voltage to the second voltage.
  • the load connected can be mobile terminals such as mobile phones and tablet computers.
  • control sub-circuit 101 When the control sub-circuit 101 detects that the voltage of the first conductive portion 1021 changes from the first voltage to the second voltage, it means that a charging wire for charging the load is connected to the communication interface 103, and the communication interface 103 needs to be provided The charging voltage, so when the control sub-circuit 101 detects that the voltage of the first conductive portion 1021 changes from the first voltage to the second voltage, it controls to activate the power supply device so that the power supply device provides charging for the communication interface 103 Voltage.
  • the charging control circuit of some embodiments of the present disclosure includes a communication interface housing, a communication interface, and a control sub-circuit;
  • the communication interface housing includes a first conductive portion, a second conductive portion, and an insulating portion, the insulating portion is provided on the Between the first conductive portion and the second conductive portion;
  • the first conductive portion is connected to the first voltage terminal;
  • the first voltage terminal is used to access the first voltage;
  • the second conductive portion and the second The voltage terminal is connected;
  • the second voltage terminal is used to access a second voltage, the first voltage is greater than the second voltage;
  • the control subcircuit is connected to the first conductive portion and the communication interface,
  • FIG. 2 is a schematic diagram of a charging control circuit provided by some embodiments of the present disclosure.
  • the charging control circuit 100 includes a communication interface housing 102, a communication interface 103, a control sub-circuit 101, and a load detector Circuit 104;
  • the communication interface housing 102 includes a first conductive portion 1021, a second conductive portion 1023, and an insulating portion 1022, the insulating portion 1022 is disposed between the first conductive portion 1021 and the second conductive portion 1023
  • the first conductive portion 1021 is connected to a first voltage terminal; the first voltage terminal is used to access a first voltage; the second conductive portion 1023 is connected to a second voltage terminal; the second voltage terminal is used For inputting a second voltage;
  • the control sub-circuit 101 is respectively connected to the first conductive portion 1021 and the communication interface 103 for detecting that the voltage of the first conductive portion 1021 changes from the first voltage to the second When the voltage is two, the power supply device (not shown) electrically connected to
  • the load detection sub-circuit 104 is connected to the control sub-circuit 101 and the communication interface 103 respectively; the control sub-circuit 101 is also used to detect that the voltage of the first conductive portion 1021 changes from the first voltage to After the second voltage, a load detection control signal is sent to the load detection sub-circuit 104; the load detection sub-circuit 104 is used to detect whether the communication interface 103 is electrically connected to the load when receiving the load detection control signal, And when it is detected that the communication interface 103 is not electrically connected to the load, it sends a non-access load indication signal to the control sub-circuit 101; the control sub-circuit 101 is also used to receive the non-access load indication signal After that, the power supply device is controlled to stop providing the communication interface 103 with a charging voltage.
  • the load detection control signal is used to trigger the load detection sub-circuit 104 to detect whether the communication interface 103 is electrically connected to the load. For example, after receiving the load detection control signal, the load detection sub-circuit 104 can complete the detection of whether the communication interface 103 is electrically connected to the load by detecting whether there is current on the communication interface 103. If the current exceeds the first preset current threshold, it is determined that the communication interface 103 is electrically connected to the load. If the current on the communication interface 103 is less than the first preset current threshold, it is determined that the communication interface 103 is not electrically connected to the load.
  • the control sub-circuit 101 controls the power supply device to stop as The communication interface 103 provides a charging voltage.
  • the charging control circuit shown in FIG. 2 further includes a current limiting resistor 106, the first conductive portion 1021 is electrically connected to the current limiting resistor 106, and one end of the current limiting resistor 106 is connected to the first conductive portion 1021
  • the first voltage when the first conductive portion 1021 and the second conductive portion 1023 are in a disconnected state, the second conductive portion 1023 is connected to a second voltage, the first voltage is higher than the second voltage, In special cases, the second conductive portion 1023 may be grounded, and the second voltage is 0 at this time.
  • the charging wire is connected to the communication interface 103, the first conductive portion 1021 and the second conductive portion 1023 are in a conducting state.
  • the resistance of the current limiting resistor 106 Since the resistance of the current limiting resistor 106 is relatively large, it can play a role in current limiting. At this time, the first The voltage of the conductive portion 1021 changes from the first voltage to the second voltage, and the control sub-circuit 101 can detect that the voltage of the first conductive portion 1021 changes from the first voltage to the second voltage.
  • the power supply device can be controlled to stop supplying the charging voltage to the communication interface, which can reduce the risk of short circuit of the charging control circuit.
  • control sub-circuit 101 is further configured to control and start the power supply device at a preset time interval after receiving the load-indicating instruction, so that the power supply device provides charging for the communication interface 103 Voltage and send a load detection control signal to the load detection sub-circuit 104.
  • the voltage device is restarted at a preset time to provide the charging voltage for the communication interface, and a load detection control signal is sent to the load detection subcircuit, which can detect that the load is not connected After that, it automatically re-detects whether there is a load access at a preset time, while ensuring the safety of the charging process, reducing power consumption and ensuring the duration of use of the power supply device.
  • control sub-circuit 101 includes a control unit 1011 and a switch unit 1012, the control unit 1011 is connected to the first conductive portion 1021 and the control terminal of the switch unit 1012, and the switch unit 1012 The first output terminal is connected to the communication interface 103, and the second output terminal of the switch unit 1012 is connected to the load detection sub-circuit 104; wherein, the control unit 1011 is configured to receive After the load instruction signal, a high-level signal is input to the control terminal of the switch unit 1012, the switch unit 1012 is turned on, and a power-off control signal is sent to the power supply device through the communication interface 103, and the power-off control The signal is used to control the power supply device to stop providing the communication interface 103 with a charging voltage.
  • control terminal of the switch unit 1012 is also connected to the pull-down resistor 105, which can prevent the high voltage damage to the switch unit 1012.
  • control unit 1011 controls the on-off switch unit 1012 and sends the power-off control signal to the power supply device, which can control the power supply device to stop supplying the charging voltage to the communication interface 103, which can reduce the risk of a short circuit in the charging control circuit.
  • the switching unit 1012 includes a switching transistor, the first pole of the switching transistor is connected to the control unit 1011, the second pole of the switching transistor is connected to the communication interface 103, and the The third pole is connected to the load detection sub-circuit 104.
  • the switching transistor includes a metal oxide MOS field effect transistor.
  • the MOS field effect transistor may be an N-type metal oxide semiconductor (Negative channel-Metal-Oxide-Semiconductor, NMOS) field effect transistor.
  • NMOS N-type metal oxide semiconductor
  • the switching transistor is an NMOS field effect transistor, the gate of the NMOS field effect transistor is connected to the control unit 1011, the source of the NMOS field effect transistor is connected to the load detection sub-circuit 104, and the drain of the NMOS field effect transistor is connected to The communication interface 103 is connected.
  • the NMOS field effect transistor has the advantages of low cost and simple circuit structure.
  • the contacts of the communication interface 103 may include a power line VBUS contact, a ground line GND contact, a positive data line contact D +, and a negative data line contact D-.
  • the NMOS field effect transistor ’s The drain is connected to the power line VBUS contact of the communication interface 103.
  • the load detection sub-circuit 104 includes a load detection unit 1041, a jumper resistor 1042, a current detection resistor 1043, and a filter capacitor 1044, the load detection unit 1041 is connected to the control unit 1011, and the load The detection unit 1041 is connected to the first end of the jumper resistor 1042, and the second end of the jumper resistor 1042 and the first end of the current detection resistor 1043 are respectively connected to the third electrode of the switching transistor.
  • the first end of the filter capacitor 1044 is connected to the first end of the jumper resistor 1042, the second end of the filter capacitor 1044 is connected to the second end of the current detection resistor 1043, and the current detection resistor 1043
  • the second end of the terminal is grounded;
  • the load detection unit 1041 is configured to detect whether the communication interface 103 is electrically connected to the load after receiving the load detection control signal input by the control unit 1011, and detect the communication interface When 103 is not electrically connected to the load, a signal indicating that the load is not connected is sent to the control unit 1011.
  • the load detection unit 1041 can complete the detection of whether the communication interface 103 is electrically connected to the load by detecting whether there is a current on the communication interface 103, and if the current on the communication interface 103 If the first preset current threshold is exceeded, it is determined that the communication interface 103 is electrically connected to the load. If the current on the communication interface 103 is less than the first preset current threshold, it is determined that the communication interface 103 is not electrically connected to the load.
  • control unit 1011 and the load detection unit 1041 may be different logic circuits integrated in the micro control unit, so that the circuit can be simplified.
  • the jumper resistor 1042 may be a zero-ohm resistor. The zero-ohm resistor can improve the protection function and be easily connected during debugging.
  • the communication interface housing 300 includes a first conductive portion 301, a second conductive portion 302, and an insulating portion.
  • the insulating portion includes a first strip-shaped insulating portion 3031 and a second strip-shaped insulating portion 3032.
  • the first side of a conductive portion 301 is connected to the first side of the second conductive portion 302 through the first strip-shaped insulating portion 3031, and the second side of the first conductive portion 301 is connected to the second The second side of the conductive portion 302 is connected through the second strip-shaped insulating portion 3032.
  • FIG. 4 is one of the structural diagrams of the communication interface housing provided by some embodiments of the present disclosure.
  • the communication interface housing 400 includes a housing body, a spring piece 403 and an insulating base 402 independent of the housing body, the housing body includes a first spring piece 4012, a connecting portion 4013 and a base 4011, The first elastic piece 4012 is connected to the base portion 4011 through the connecting portion 4013.
  • the first elastic piece 4012, the connecting portion 4013, the base portion 4011, and the elastic piece 403 are made of a conductive material, and the elastic piece 403 is used as the first conductive Part, the housing body is used as the second conductive portion, and the insulating medium between the housing body and the elastic sheet is used as the insulating portion.
  • the housing body may be made of metal
  • the elastic piece 403 may be made of metal
  • FIG. 5 is a schematic diagram of a charging circuit provided by some embodiments of the present disclosure.
  • the charging circuit includes a charging control circuit 500 and a power supply device 504.
  • the charging control circuit 500 includes a communication interface housing 502, a communication interface 503, and a control subcircuit 501;
  • the communication interface housing 502 includes a first conductive portion 5021 and a second conductive portion 5023 and an insulating portion 5022, the insulating portion 5022 is provided between the first conductive portion 5021 and the second conductive portion 5023;
  • the first conductive portion 5021 is connected to the first voltage terminal; the first voltage The terminal is used to access the first voltage;
  • the second conductive portion 5023 is connected to the second voltage terminal;
  • the second voltage terminal is used to input a second voltage;
  • the control sub-circuit 501 is respectively connected to the first conductive portion 5021 is connected to the communication interface 503, and is used to control and start the power supply device 504 electrically connected to the communication interface 503 when the voltage of the first
  • the power supply device includes a charging power supply and a power supply control chip; the control subcircuit 501 is used to detect when the voltage of the first conductive portion 5021 changes from the first voltage to the second voltage
  • the communication interface 503 sends a power-on control signal to the power control chip 5042 to control the first power control chip 5042 to activate the charging power supply 5041 so that the charging power supply 5041 provides the communication interface 503 with a charging voltage.
  • the charging control circuit 500 provided in this embodiment has the same function as the charging control circuit 100 shown in FIGS. 1 and 2. To avoid repetition, details are not described here.
  • the devices required for the charging control circuit can be reduced, the charging control circuit can be simplified, and the reliability of the charging control process can be improved.
  • Some embodiments of the present disclosure also provide an electronic device including the above-mentioned charging circuit.
  • the electronic device may be any terminal device including dual cameras, such as a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (Personal Digital Assistant) , Referred to as PDA), mobile Internet device (Mobile Internet Device, MID) or wearable device (Wearable Device), etc.
  • the electronic device can reduce the components required for the charging control circuit, simplify the charging control circuit, and improve the reliability of the charging control process.
  • FIG. 6 is a flowchart of a charging control method provided by some embodiments of the present disclosure. As shown in FIG. 6, the method is applied to the charging circuit in the above embodiment, and the method includes:
  • Step 601 When it is detected that the voltage of the first conductive part changes from the first voltage to the second voltage, control to start a power supply device electrically connected to the communication interface, so that the power supply device provides the communication interface Charging voltage.
  • the power supply device may be a mobile charging device including a power supply control chip and a charging power supply.
  • the communication interface may include a universal serial bus (Universal Serial Bus, USB) interface, and the communication interface housing may be a USB interface housing.
  • USB Universal Serial Bus
  • the voltage connected to the first conductive part is the first voltage.
  • the connected load can conduct the first conductive part and the second conductive part, so that the first The voltage of the conductive portion changes from the first voltage to the second voltage.
  • the control sub-circuit When the control sub-circuit detects that the voltage of the first conductive part changes from the first voltage to the second voltage, it means that the charging wire is connected to the communication interface, and the charging voltage needs to be provided to the communication interface, so when the control sub-circuit detects the first When a conductive part is connected to the first voltage, the power supply device is controlled to be activated so that the power supply device provides a charging voltage for the communication interface.
  • the control sub-circuit controls to start the power supply device so that the power supply The device provides a charging voltage for the communication interface.
  • the components required for the charging control circuit can be reduced, the charging control circuit can be simplified, and the reliability of the charging process can be improved.
  • FIG. 7 is a flowchart of a charging control method provided by some embodiments of the present disclosure. As shown in FIG. 7, the method is applied to the charging circuit in the above embodiment; the method includes:
  • Step 701 When it is detected that the voltage of the first conductive part changes from the first voltage to the second voltage, control to start the power supply device electrically connected to the communication interface, so that the power supply device provides the communication interface Charging voltage.
  • step 601 The implementation process and beneficial effects of this step can be referred to the description in step 601, and will not be repeated here.
  • Step 702 After detecting that the voltage of the first conductive portion changes from the first voltage to the second voltage, the control sub-circuit sends a load detection control signal to the load detection sub-circuit.
  • the load detection control signal is used to trigger the load detection sub-circuit 104 to detect whether the communication interface 103 is electrically connected to the load.
  • Step 703 When receiving the load detection control signal, the load detection sub-circuit detects whether the communication interface is electrically connected to the load, and when it is detected that the communication interface is not electrically connected to the load, sends the control The sub-circuit sends a signal indicating that the load is not connected.
  • the load detection sub-circuit 104 can complete the detection of whether the communication interface 103 is electrically connected to the load by detecting whether there is current on the communication interface 103. If the current exceeds the first preset current threshold, it is determined that the communication interface 103 is electrically connected to the load. If the current on the communication interface 103 is less than the first preset current threshold, it is determined that the communication interface 103 is not electrically connected to the load.
  • Step 704 After receiving the load disconnection indication signal, control the power supply device to stop providing a charging voltage for the communication interface.
  • the control sub-circuit 101 sends The power control chip sends a power off control signal to control the power control chip to turn off the charging power.
  • step 704 the following steps may also be included:
  • control sub-circuit After receiving the non-access load indication signal, the control sub-circuit controls to start the power supply device at a preset time interval, so that the power supply device provides a charging voltage to the communication interface and detects the load The sub-circuit sends a load detection control signal.
  • the power supply device is restarted at a preset time to provide the charging voltage for the communication interface, and a load detection control signal is sent to the load detection sub-circuit, which is automatically re-detected according to the load detection control signal Whether there is a load access, while ensuring the safety of the charging process, reduce power consumption and ensure the duration of the charging power supply.
  • the power supply device electrically connected to the communication interface when it is detected that the voltage of the first conductive portion changes from the first voltage to the second voltage, the power supply device electrically connected to the communication interface is controlled to start so that all The power supply device provides a charging voltage for the communication interface; after detecting that the voltage of the first conductive portion changes from the first voltage to the second voltage, the control sub-circuit sends a load detection control to the load detection sub-circuit Signal; when receiving the load detection control signal, the load detection sub-circuit detects whether the communication interface is electrically connected to the load, and when it is detected that the communication interface is not electrically connected to the load, to the control sub The circuit sends a signal indicating that the load is not connected; after receiving the signal indicating that the load is not connected, the power supply device is controlled to stop providing a charging voltage to the communication interface.
  • the components required for the charging control circuit can be reduced, the charging control circuit can be simplified, and the reliability and safety of the charging control process can be
  • FIG. 8 is a flowchart of a charging control method provided by some embodiments of the present disclosure.
  • the method is applied to the charging circuit in the above embodiment.
  • the communication interface in the charging circuit is specifically a USB interface
  • the communication interface housing is specifically a USB interface housing
  • the USB interface housing includes A first conductive portion, a second conductive portion, and an insulating portion, the insulating portion is provided between the first conductive portion and the second conductive portion
  • the first conductive portion is connected to the first voltage terminal;
  • the first voltage terminal is used to access the first voltage;
  • the second conductive portion is connected to the second voltage terminal;
  • the second voltage terminal is used to access the second voltage;
  • the first voltage is greater than the second voltage
  • the charging power supply is connected to the communication interface through the power control chip;
  • the control sub-circuit is connected to the first conductive part and the communication interface respectively;
  • the load detection sub-circuit is connected to the control sub-circuit respectively Circuit and the USB interface connection;
  • the method includes
  • Step 801 the load is inserted into the USB interface.
  • the load may be a mobile terminal such as a mobile phone or a tablet computer.
  • a load such as a mobile phone can be connected to a USB interface through a USB cable.
  • Step 802 Provide a charging voltage to the USB interface and check the flow of the USB interface.
  • This step 802 may include the following steps: when it is detected that the voltage of the first conductive portion changes from the first voltage to the second voltage, the control sub-circuit controls to start the power supply device so that the power supply device is the USB The charging voltage is provided by the interface, and the USB interface is detected by the load detection sub-circuit.
  • Step 803 The detected current value exceeds the second preset current threshold.
  • a second preset current threshold may be set, and when the detected current value exceeds the second preset current threshold, it is determined that the detected current value is overcurrent.
  • Step 804 Stop providing the charging voltage to the USB interface.
  • This step 804 may include the following steps:
  • the control sub-circuit sends a power-off control signal to the power control chip to control the power control chip to turn off the charging power and stop supplying the charging voltage to the USB interface.
  • Step 805 The detected current value is a normal current value.
  • a normal current value may be set in advance, and the normal current value is a current value when the USB interface charges the load normally, which may be a range of current values.
  • Step 806 Continuously monitor the current of the USB interface, and stop providing the charging voltage to the USB interface after the load charging is completed.
  • Step 807 The detected current value is lower than the third preset current threshold.
  • a third preset current threshold may be set in advance, the third preset current threshold may be a relatively small current value, or may be 0, if the detected current value is lower than the third preset The current threshold indicates that the USB interface is not connected to the load.
  • Step 808 Stop providing the charging voltage to the USB interface, provide the charging voltage to the USB interface at a preset time interval, and detect the current value of the USB interface.
  • This step 808 may include the following steps: the control sub-circuit sends a power-off control signal to the power control chip to control the power control chip to turn off the charging power supply, and the charging voltage can be stopped when the USB is stopped.
  • the sub-circuit sends a power-on control signal to the power control chip through the USB interface at a preset time to control the power control chip to start the charging power source so that the charging power source provides the charging voltage for the communication interface And send a load detection control signal to the load detection sub-circuit, and detect the current value of the USB interface through the load detection sub-circuit.
  • Step 809 After the load charging is completed, stop supplying the charging voltage to the USB interface.
  • this step 809 may include the following steps: the control sub-circuit sends a power-off control signal to the power control chip to control the power control chip to turn off the charging power, and stop charging to the USB to provide charging Voltage.
  • the charging control method of some embodiments of the present disclosure restarts the charging power supply at a preset time to provide the charging voltage for the USB interface, and detects the current of the USB interface, and can automatically re-detect whether a load is connected to the USB interface to ensure the safety of the charging process At the same time, reduce power consumption and ensure the duration of charging power supply.
  • Some embodiments of the present disclosure also provide a computer-readable storage medium that stores a computer program on the computer-readable storage medium.
  • the computer program When the computer program is executed by a processor, the processes of the foregoing charging control method embodiments are implemented, and the same can be achieved. In order to avoid repetition, we will not repeat them here.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk or optical disk, etc.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • 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, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present disclosure essentially or part of the contribution to the existing technology or part of the technical solution may be embodied in the form of a software product, the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present disclosure.
  • the foregoing storage media include various media that can store program codes, such as a U disk, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.
  • the embodiments described in the embodiments of the present disclosure may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing device (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general-purpose processor, controller, microcontroller, microprocessor, others for performing the functions described in this disclosure Electronic unit or its combination.
  • ASIC Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing device
  • DPD digital signal processing device
  • PLD programmable Logic Device
  • FPGA field programmable gate array
  • controller microcontroller, microprocessor, others for performing the functions described in this disclosure Electronic unit or its combination.
  • the technology described in the embodiments of the present disclosure may be implemented through modules (eg, procedures, functions, etc.) that perform the functions described in the embodiments of the present disclosure.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory may be implemented in the processor or external to the processor.

Abstract

一种充电控制电路、充电电路及充电控制方法，该充电控制电路（100、500）包括：通信接口外壳（102、502）、通信接口（103、503）及控制子电路（101、501）；通信接口外壳（102、502）包括第一导电部（1021、5021）、第二导电部（1023、5023）以及绝缘部（1022、5022），绝缘部（1022、5022）设置于第一导电部（1021、5021）与第二导电部（1023、5023）之间；第一导电部（1021、5021）与第一电压端连接；第二导电部（1023、5023）与第二电压端连接；第一电压端接入的第一电压大于第二电压端接入的第二电压；以及控制子电路（101、501）分别与第一导电部（1021、5021）和通信接口（103、503）连接，用于检测到第一导电部（1021、5021）的电压由第一电压变为第二电压时，控制启动与通信接口（103、503）电连接的电源装置（504），以使得电源装置（504）为通信接口（103、503）提供充电电压。

Description

充电控制电路、充电电路及充电控制方法
相关申请的交叉引用
本申请主张在2018年10月31日在中国提交的中国专利申请号No.201811284768.0的优先权，其全部内容通过引用包含于此。
技术领域
本公开涉及通信技术领域，尤其涉及一种充电控制电路、充电电路及充电控制方法。
背景技术
目前移动电源的充电控制电路包括自动充电控制电路及手动充电控制电路。手动充电控制电路一般设有开关，通过用户手动控制开关的闭合，从而实现手动开启电源输出。自动充电控制电路则在移动电源插入充电设备后，能自动检测负载并启动电源输出。自动充电控制电路的实现方式包括通过集成电路(Integrated Circuit，IC)实现，及通过分立器件搭建的检测电路实现。由于相关的通过集成电路IC、及通过分立器件搭建的充电控制电路比较复杂，导致相关的充电控制电路的可靠性比较差。
可见，相关的充电控制电路存在可靠性比较差的问题。
发明内容
本公开的一些实施例提供一种充电控制电路、充电电路及充电控制方法，以解决相关的充电控制电路存在可靠性比较差的问题。
为解决上述技术问题，本公开是这样实现的：
第一方面，本公开的一些实施例提供了一种充电控制电路，包括：
通信接口外壳、通信接口及控制子电路；
所述通信接口外壳包括第一导电部、第二导电部以及绝缘部，所 述绝缘部设置于所述第一导电部与所述第二导电部之间；
所述第一导电部与第一电压端连接；所述第一电压端用于接入第一电压；
所述第二导电部与第二电压端连接；所述第二电压端用于接入第二电压，所述第一电压大于所述第二电压；以及
所述控制子电路分别与所述第一导电部和所述通信接口连接，用于当检测到所述第一导电部的电压由第一电压变为第二电压时，控制启动与所述通信接口电连接的电源装置，以使得所述电源装置为所述通信接口提供充电电压。
第二方面，本公开的一些实施例还提供一种充电电路，包括：
上述的充电控制电路，及与所述充电控制电路的所述通信接口电连接的电源装置。
第三方面，本公开的一些实施例还提供一种电子设备，包括上述的充电电路。
第四方面，本公开的一些实施例还提供一种充电控制方法，应用于上述的充电电路，所述方法包括：
当检测到所述第一导电部的电压由第一电压变为第二电压时，控制启动与所述通信接口电连接的电源装置，以使得所述电源装置为所述通信接口提供充电电压。
在本公开实施例中，充电控制电路包括：通信接口外壳、通信接口及控制子电路；所述通信接口外壳包括第一导电部、第二导电部以及绝缘部，所述绝缘部设置于所述第一导电部与所述第二导电部之间；所述第一导电部与第一电压端连接；所述第一电压端用于接入第一电压；所述第二导电部与第二电压端连接；所述第二电压端用于接入第二电压，所述第一电压大于所述第二电压；所述控制子电路分别与所述第一导电部和所述通信接口连接，用于当检测到所述第一导电部的电压由第一电压变为第二电压时，控制启动与所述通信接口电连接的电源装置，以使得所述电源装置为所述通信接口提供充电电压。这样，通过利用通信接口外壳，可以减少充电控制电路所需要的器件，简化 充电控制电路，提高充电控制过程的可靠性。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对本公开实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是本公开的一些实施例提供的充电控制电路的原理图之一；
图2是本公开的一些实施例提供的充电控制电路的原理图之二；
图3是本公开的一些实施例提供的通信接口外壳的结构图之一；
图4是本公开的一些实施例提供的通信接口外壳的结构图之二；
图5是本公开的一些实施例提供的充电电路的原理图；
图6是本公开的一些实施例提供的充电控制方法的流程图之一；
图7是本公开的一些实施例提供的充电控制方法之二；以及
图8是本公开的一些实施例提供的充电控制方法之三。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
参见图1，图1是本公开的一些实施例提供的充电控制电路的原理图，如图1所示，充电控制电路100包括通信接口外壳102、通信接口103及控制子电路101；所述通信接口外壳102包括第一导电部1021、第二导电部1023以及绝缘部1022，所述绝缘部1022设置于所述第一导电部1021与所述第二导电部1023之间；所述第一导电部1021与第一电压端连接；所述第一电压端用于接入第一电压；所述 第二导电部1023与第二电压端连接；所述第二电压端用于输入第二电压；所述控制子电路101分别与所述第一导电部1021和所述通信接口103连接，用于当检测到所述第一导电部1021的电压由第一电压变为第二电压时，控制启动与所述通信接口103电连接的电源装置(图未画出)，以使得所述电源装置为所述通信接口103提供充电电压。
在本实施例中，所述电源装置可以为包括电源控制芯片及充电电源的移动电源装置。所述通信接口可以包括通用串行总线(Universal Serial Bus，USB)接口，所述通信接口外壳可以为USB接口外壳。
由于所述绝缘部1022设置于所述第一导电部1021与所述第二导电部1023之间，在没有其他物体的辅助作用下，第一导电部1021与所述第二导电部1023之间处于断开状态，此时，第一导电部1021接入的电压为第一电压，在所述通信接口103接入负载的情况下，接入的负载可以将第一导电部1021与第二导电部1023进行导通，使得第一导电部1021的电压由第一电压变为第二电压。接入的负载可以为手机、平板电脑等移动终端。
在控制子电路101检测到第一导电部1021的电压由第一电压变为第二电压时，说明在通信接口103上接入了用于对负载进行充电的充电导线，需要向通信接口103提供充电电压，故控制子电路101当检测到第一导电部1021的电压由第一电压变为第二电压时，控制启动所述电源装置，以使得所述电源装置为所述通信接口103提供充电电压。
本公开的一些实施例的充电控制电路，包括通信接口外壳、通信接口及控制子电路；所述通信接口外壳包括第一导电部、第二导电部以及绝缘部，所述绝缘部设置于所述第一导电部与所述第二导电部之间；所述第一导电部与第一电压端连接；所述第一电压端用于接入第一电压；所述第二导电部与第二电压端连接；所述第二电压端用于接入第二电压，所述第一电压大于所述第二电压；所述控制子电路分别与所述第一导电部和所述通信接口连接，用于当检测到所述第一导电 部的电压由第一电压变为第二电压时，控制启动与所述通信接口电连接的电源装置，以使得所述电源装置为所述通信接口提供充电电压。这样，通过利用通信接口外壳，可以减少充电控制电路所需要的器件，简化充电控制电路，提高充电控制过程的可靠性。
参见图2，图2是本公开的一些实施例提供的充电控制电路的原理图，如图2所示，充电控制电路100包括通信接口外壳102、通信接口103、控制子电路101及负载检测子电路104；所述通信接口外壳102包括第一导电部1021、第二导电部1023以及绝缘部1022，所述绝缘部1022设置于所述第一导电部1021与所述第二导电部1023之间；所述第一导电部1021与第一电压端连接；所述第一电压端用于接入第一电压；所述第二导电部1023与第二电压端连接；所述第二电压端用于输入第二电压；所述控制子电路101分别与所述第一导电部1021和所述通信接口103连接，用于当检测到所述第一导电部1021的电压由第一电压变为第二电压时，控制启动与所述通信接口103电连接的电源装置(图未画出)，以使得所述电源装置为所述通信接口103提供充电电压。
所述负载检测子电路104分别与所述控制子电路101及所述通信接口103连接；所述控制子电路101还用于在检测到所述第一导电部1021的电压由第一电压变为第二电压后向所述负载检测子电路104发送负载检测控制信号；所述负载检测子电路104用于在接收到所述负载检测控制信号时，检测所述通信接口103是否与负载电连接，并在检测到所述通信接口103不与负载电连接时向所述控制子电路101发送未接入负载指示信号；所述控制子电路101还用于在接收到所述未接入负载指示信号后，控制所述电源装置停止为所述通信接口103提供充电电压。
在本实施例中，所述负载检测控制信号用于触发所述负载检测子电路104对通信接口103是否与负载电连接进行检测。举例来说，负载检测子电路104在接收到所述负载检测控制信号后，可以通过检测通信接口103上是否有电流，完成对通信接口103是否与负载电连接 的检测，若通信接口103上的电流超过第一预设电流阈值，则确定通信接口103与负载电连接，若通信接口103上的电流小于第一预设电流阈值，则确定通信接口103未与负载电连接。在通信接口103未与负载电连接时，说明不需要提供充电电压，需要关闭充电电压，故所述控制子电路101在接收到所述未接入负载指示信号后，控制所述电源装置停止为所述通信接口103提供充电电压。
补充说明的是，图2所示的充电控制电路还包括限流电阻106，第一导电部1021与所述限流电阻106电连接，通过限流电阻106的一端向第一导电部1021接入第一电压，在所述第一导电部1021与所述第二导电部1023处于断开状态时，第二导电部1023接入第二电压，所述第一电压高于所述第二电压，特殊情况下，第二导电部1023可以接地，此时第二电压为0。在通信接口103接入充电导线时，第一导电部1021与第二导电部1023处于导通状态，由于限流电阻106的阻值比较大，能够起到限流的作用，此时，第一导电部1021的电压由第一电压变为第二电压，控制子电路101可以检测到第一导电部1021的电压由第一电压变为第二电压。
这样，在通信接口不与负载电连接时，可以控制电源装置停止为通信接口提供充电电压，能够降低充电控制电路短路的风险。
可选的，所述控制子电路101，还用于在接收到所述未接入负载指示信号后，间隔预设时间控制启动电源装置，以使得所述电源装置为所述通信接口103提供充电电压，并向所述负载检测子电路104发送负载检测控制信号。
这样，在接收到未接入负载指示信号后，间隔预设时间重新启动电压装置为通信接口提供充电电压，并向所述负载检测子电路发送负载检测控制信号，可以在检测到未接入负载后，自动间隔预设时间重新检测是否有负载接入，在保障充电过程安全性的同时，降低功耗，保障电源装置的使用时长。
可选的，所述控制子电路101包括控制单元1011及开关单元1012，所述控制单元1011分别与所述第一导电部1021及所述开关单元1012 的控制端连接，所述开关单元1012的第一输出端与所述通信接口103连接，所述开关单元1012的第二输出端与所述负载检测子电路104连接；其中，所述控制单元1011，用于在接收到所述未接入负载指示信号后，向所述开关单元1012的控制端输入高电平信号，导通所述开关单元1012，通过所述通信接口103向所述电源装置发送电源关闭控制信号，所述电源关闭控制信号，用于控制所述电源装置停止为所述通信接口103提供充电电压。
补充说明的是，所述开关单元1012的控制端还与下拉电阻105连接，下拉电阻105可以防止开关单元1012出现高压损害。
这样，控制单元1011控制导通开关单元1012，并向所述电源装置发送所述电源关闭控制信号，可以控制电源装置停止为所述通信接口103提供充电电压，能够降低充电控制电路短路的风险。
可选的，所述开关单元1012包括开关晶体管，所述开关晶体管的第一极与所述控制单元1011连接，所述开关晶体管的第二极与所述通信接口103连接，所述开关晶体管的第三极与所述负载检测子电路104连接。
在本实施例中，所述开关晶体管包括金属氧化物MOS场效应管，例如MOS场效应管可以为N型金属氧化物半导体(Negative channel-Metal-Oxide-Semiconductor，NMOS)场效应管。举例来说，若开关晶体管为NMOS场效应管时，NMOS场效应管的栅极与控制单元1011连接，NMOS场效应管的源极与负载检测子电路104连接，NMOS场效应管的漏极与通信接口103连接。NMOS场效应管作为开关晶体管，具有成本低及电路结构简单的优点。
具体来说，通信接口103的触点可以包括电源线VBUS触点、接地线GND触点、正数据线触点D+及负数据线触点D-，在本实施例中，NMOS场效应管的漏极与通信接口103的电源线VBUS触点连接。
在本实施例中，所述负载检测子电路104包括负载检测单元1041、跨接电阻1042、检流电阻1043及滤波电容1044，所述负载检测单元 1041与所述控制单元1011连接，所述负载检测单元1041与所述跨接电阻1042的第一端连接，所述跨接电阻1042的第二端及所述检流电阻1043的第一端分别与所述开关晶体管的第三极连接，所述滤波电容1044的第一端与所述跨接电阻1042的第一端连接，所述滤波电容1044的第二端与所述检流电阻1043的第二端连接，且所述检流电阻1043的第二端接地；所述负载检测单元1041，用于在接收到所控制单元1011输入的负载检测控制信号后，检测所述通信接口103是否与负载电连接，并在检测到所述通信接口103不与负载电连接时，向所述控制单元1011发送未接入负载指示信号。举例来说，负载检测单元1041在接收到所述负载检测控制信号后，可以通过检测通信接口103上是否有电流，完成对通信接口103是否与负载电连接的检测，若通信接口103上的电流超过第一预设电流阈值，则确定通信接口103与负载电连接，若通信接口103上的电流小于第一预设电流阈值，则确定通信接口103未与负载电连接。
在本实施例中，所述控制单元1011及所述负载检测单元1041可以为集成在微控制单元中的不同逻辑电路，这样，可以简化电路。所述跨接电阻1042可以为零欧姆电阻，零欧姆电阻能够提高保护功能，在调试过程中容易进行连接。
请参阅图3，图3所示为本公开的一些实施例提供的通信接口外壳的结构图之一。如图3所示，通信接口外壳300包括第一导电部301、第二导电部302及绝缘部，所述绝缘部包括第一条形绝缘部3031及第二条形绝缘部3032，所述第一导电部301的第一侧边与所第二导电部302的第一侧边通过所述第一条形绝缘部3031连接，所述第一导电部301的第二侧边与所述第二导电部302的第二侧边通过所述第二条形绝缘部3032连接。
这样，可以区别于相关的通信接口外壳，提供绝缘部设置在第一导电部与第二导电部之间的通信接口外壳。
请参阅图4，图4所示为本公开的一些实施例提供的通信接口外壳的结构图之一。
如图4所示，所述通信接口外壳400包括外壳本体、独立于所述外壳本体之外的弹片403及绝缘基座402，所述外壳本体包括第一弹片4012、连接部4013及基部4011，所述第一弹片4012通过所述连接部4013与所述基部4011连接，所述第一弹片4012、连接部4013、基部4011及弹片403由导电材料制成，将所述弹片403作为第一导电部，将所述外壳本体作为第二导电部，将所述外壳本体与所述弹片之间的绝缘介质作为所述绝缘部。
举例来说，所述外壳本体可以由金属制成，所述弹片403可以由金属制成。
这样，可以区别于相关的通信接口外壳，提供绝缘部设置在第一导电部与第二导电部之间的通信接口外壳。
参见图5，图5是本公开的一些实施例提供的充电电路的原理图。所述充电电路包括充电控制电路500及电源装置504，充电控制电路500包括通信接口外壳502、通信接口503及控制子电路501；所述通信接口外壳502包括第一导电部5021、第二导电部5023以及绝缘部5022，所述绝缘部5022设置于所述第一导电部5021与所述第二导电部5023之间；所述第一导电部5021与第一电压端连接；所述第一电压端用于接入第一电压；所述第二导电部5023与第二电压端连接；所述第二电压端用于输入第二电压；所述控制子电路501分别与所述第一导电部5021和所述通信接口503连接，用于当检测到所述第一导电部5021的电压由第一电压变为第二电压时，控制启动与所述通信接口503电连接的电源装置504，以使得所述电源装置504为所述通信接口503提供充电电压。
可选的，所述电源装置包括充电电源和电源控制芯片；所述控制子电路501用于当检测到所述第一导电部5021的电压由第一电压变为第二电压时，通过所述通信接口503向所述电源控制芯片5042发送电源开启控制信号，以控制所述第一电源控制芯片5042启动所述充电电源5041，以使得所述充电电源5041为所述通信接口503提供充电电压。
在本实施例提供的所述充电控制电路500与图1及图2所示的充电控制电路100具有相同的功能，为避免重复，在此不再赘述。
本实施例中，通过利用通信接口外壳，可以减少充电控制电路所需要的器件，简化充电控制电路，提高充电控制过程的可靠性。
本公开的一些实施例还提供一种电子设备，所述电子设备包括上述的充电电路。
在本公开的一些实施例中，上述电子设备可以为任何包括双摄像头的终端设备，例如：手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、个人数字助理(Personal Digital Assistant，简称PDA)、移动上网装置(Mobile Internet Device，MID)或可穿戴式设备(Wearable Device)等。
本实施例中，电子设备通过利用通信接口外壳，可以减少充电控制电路所需要的器件，简化充电控制电路，提高充电控制过程的可靠性。
请参阅图6，图6所示为本公开的一些实施例提供的充电控制方法的流程图。如图6所示，所述方法应用于上述实施例中的充电电路，所述方法包括：
步骤601、当检测到所述第一导电部的电压由第一电压变为第二电压时，控制启动与所述通信接口电连接的电源装置，以使得所述电源装置为所述通信接口提供充电电压。
在本实施例中，所述电源装置可以为包括电源控制芯片及充电电源的移动充电装置。所述通信接口可以包括通用串行总线(Universal Serial Bus，USB)接口，所述通信接口外壳可以为USB接口外壳。
由于所述绝缘部设置于所述第一导电部与所述第二导电部之间，在没有其他物体的辅助作用下，第一导电部与所述第二导电部之间处于断开状态，此时，第一导电部接入的电压为第一电压，在所述通信接口接入负载的情况下，接入的负载可以将第一导电部与第二导电部进行导通，使得第一导电部的电压由第一电压变为第二电压。
在控制子电路检测到第一导电部的电压由第一电压变为第二电 压时，说明在通信接口上接入了充电导线，需要向通信接口提供充电电压，故控制子电路当检测到第一导电部接入所述第一电压时，控制启动所述电源装置，以使得所述电源装置为所述通信接口提供充电电压。
本公开的一些实施例的充电控制方法，当检测到所述第一导电部的电压由第一电压变为第二电压时，所述控制子电路控制启动所述电源装置，以使得所述电源装置为所述通信接口提供充电电压。这样，通过利用通信接口外壳，可以减少充电控制电路所需要的器件，简化充电控制电路，提高充电过程的可靠性。
请参阅图7，图7所示为本公开的一些实施例提供的充电控制方法的流程图。如图7所示，所述方法应用于上述实施例中的充电电路；所述方法包括：
步骤701、当检测到所述第一导电部的电压由第一电压变为第二电压时，控制启动与所述通信接口电连接的电源装置，以使得所述电源装置为所述通信接口提供充电电压。
此步骤的实现过程和有益效果可以参见步骤601中的描述，此处不再赘述。
步骤702、在检测到所述第一导电部的电压由第一电压变为第二电压后，所述控制子电路向所述负载检测子电路发送负载检测控制信号。
在本实施例中，所述负载检测控制信号用于触发所述负载检测子电路104对通信接口103是否与负载电连接进行检测。
步骤703、在接收到所述负载检测控制信号时，所述负载检测子电路检测所述通信接口是否与负载电连接，并在检测到所述通信接口不与负载电连接时，向所述控制子电路发送未接入负载指示信号。
举例来说，负载检测子电路104在接收到所述负载检测控制信号后，可以通过检测通信接口103上是否有电流，完成对通信接口103是否与负载电连接的检测，若通信接口103上的电流超过第一预设电流阈值，则确定通信接口103与负载电连接，若通信接口103上的电 流小于第一预设电流阈值，则确定通信接口103未与负载电连接。
步骤704、在接收到所述未接入负载指示信号后，控制所述电源装置停止为所述通信接口提供充电电压。
在本实施例中，在通信接口103未与负载电连接时，说明不需要提供充电电压，需要关闭充电电压，故所述控制子电路101在接收到所述未接入负载指示信号后，向所述电源控制芯片发送电源关闭控制信号，以控制所述电源控制芯片关闭所述充电电源。
补充说明的是，在步骤704之后，还可以包括以下步骤:
在接收到所述未接入负载指示信号后，所述控制子电路间隔预设时间控制启动所述电源装置，以使得所述电源装置为所述通信接口提供充电电压，并向所述负载检测子电路发送负载检测控制信号。
这样，在接收到未接入负载指示信号后，间隔预设时间重新启动电源装置为通信接口提供充电电压，并向所述负载检测子电路发送负载检测控制信号，根据负载检测控制信号自动重新检测是否有负载接入，在保障充电过程安全性的同时，降低功耗，保障充电电源的使用时长。
在本公开的一些实施例的充电控制方法，当检测到所述第一导电部的电压由第一电压变为第二电压时，控制启动与所述通信接口电连接的电源装置，以使得所述电源装置为所述通信接口提供充电电压；在检测到所述第一导电部的电压由第一电压变为第二电压后，所述控制子电路向所述负载检测子电路发送负载检测控制信号；在接收到所述负载检测控制信号时，所述负载检测子电路检测所述通信接口是否与负载电连接，并在检测到所述通信接口不与负载电连接时，向所述控制子电路发送未接入负载指示信号；在接收到所述未接入负载指示信号后，控制所述电源装置停止为所述通信接口提供充电电压。这样，通过利用通信接口外壳，可以减少充电控制电路所需要的器件，简化充电控制电路，提高充电控制过程的可靠性及安全性。
请参阅图8，图8所示为本公开的一些实施例提供的充电控制方法的流程图。如图8所示，所述方法应用于上述实施例中的充电电路， 补充说明的是，充电电路中的通信接口具体为USB接口，通信接口外壳具体为USB接口外壳；所述USB接口外壳包括第一导电部、第二导电部以及绝缘部，所述绝缘部设置于所述第一导电部与所述第二导电部之间；所述第一导电部与第一电压端连接；所述第一电压端用于接入第一电压；所述第二导电部与第二电压端连接；所述第二电压端用于接入第二电压；所述第一电压大于所述第二电压；所述充电电源通过所述电源控制芯片与所述通信接口连接；所述控制子电路分别与所述第一导电部和所述通信接口连接；所述负载检测子电路分别与所述控制子电路及所述USB接口连接；所述方法包括：
步骤801、负载插入USB接口。
在本实施例中，所述负载可以为手机、平板电脑等移动终端。举例来说，可以通过USB线将手机等负载接入USB接口。
步骤802、向USB接口提供充电电压，对USB接口检流。
该步骤802可以包括以下步骤：当检测到所述第一导电部的电压由第一电压变为第二电压时，控制子电路控制启动所述电源装置，以使得所述电源装置为所述USB接口提供充电电压，通过所述负载检测子电路对USB接口检流。
步骤803、检测到的电流值超过第二预设电流阈值。
在本实施例中，可以设置第二预设电流阈值，当检测到的电流值超过第二预设电流阈值时，确定检测到的电流值过流。
步骤804、停止向USB接口提供充电电压。
该步骤804可以包括以下步骤：
所述控制子电路向所述电源控制芯片发送电源关闭控制信号，以控制所述电源控制芯片关闭所述充电电源，停止向所述USB接口提供充电电压。
步骤805、检测到的电流值为正常电流值。
在本实施例中，可以预先对正常电流值进行设置，所述正常电流值为USB接口正常向负载进行充电时的电流数值，可以为一个电流值范围。
步骤806、持续监测USB接口电流，在负载充电完成后停止向USB接口提供充电电压。
这样，可以确保充电过程中的安全性，减少功耗。
步骤807、检测到的电流值低于第三预设电流阈值。
在本实施例中，可以预先对第三预设电流阈值进行设置，该第三预设电流阈值可以为比较小的电流值，也可以为0，若检测到的电流值低于第三预设电流阈值，则说明USB接口未接入负载。
步骤808、停止向USB接口提供充电电压，间隔预设时间向USB接口提供充电电压，并检测USB接口的电流值。
该步骤808可以包括以下步骤：所述控制子电路向所述电源控制芯片发送电源关闭控制信号，以控制所述电源控制芯片关闭所述充电电源，停止向USB即可提供充电电压，所述控制子电路间隔预设时间通过所述USB接口向所述电源控制芯片发送电源开启控制信号，以控制所述电源控制芯片启动所述充电电源，以使得所述充电电源为所述通信接口提供充电电压，并向所述负载检测子电路发送负载检测控制信号，通过所述负载检测子电路检测USB接口的电流值。
步骤809、在负载充电完成后，停止向USB接口提供充电电压。
本实施例中，该步骤809可以包括以下步骤：所述控制子电路向所述电源控制芯片发送电源关闭控制信号，以控制所述电源控制芯片关闭所述充电电源，停止向USB即可提供充电电压。
本公开的一些实施例的充电控制方法，间隔预设时间重新启动充电电源为USB接口提供充电电压，并检测USB接口的电流，可以自动重新检测是否有负载接入USB接口，在保障充电过程安全性的同时，降低功耗，保障充电电源的使用时长。
本公开的一些实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述充电控制方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，简称ROM)、随机存取存储器(Random  Access Memory，简称RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本公开的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以 集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本公开各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本公开各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来控制相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
可以理解的是，本公开实施例描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现，处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits，ASIC)、数字信号处理器(Digital Signal Processing，DSP)、 数字信号处理设备(DSP Device，DSPD)、可编程逻辑设备(Programmable Logic Device，PLD)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本公开所述功能的其它电子单元或其组合中。
对于软件实现，可通过执行本公开实施例所述功能的模块(例如过程、函数等)来实现本公开实施例所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护之内。

Claims (14)

  1. 一种充电控制电路，包括：通信接口外壳、通信接口及控制子电路；
    所述通信接口外壳包括第一导电部、第二导电部以及绝缘部，所述绝缘部设置于所述第一导电部与所述第二导电部之间；
    所述第一导电部与第一电压端连接；所述第一电压端用于接入第一电压；
    所述第二导电部与第二电压端连接；所述第二电压端用于接入第二电压，所述第一电压大于所述第二电压；以及
    所述控制子电路分别与所述第一导电部和所述通信接口连接，用于当检测到所述第一导电部的电压由第一电压变为第二电压时，控制启动与所述通信接口电连接的电源装置，以使得所述电源装置为所述通信接口提供充电电压。
  2. 如权利要求1所述的充电控制电路，其中，还包括负载检测子电路；所述负载检测子电路分别与所述控制子电路及所述通信接口连接；
    所述控制子电路还用于在检测到所述第一导电部的电压由第一电压变为第二电压后向所述负载检测子电路发送负载检测控制信号；
    所述负载检测子电路用于在接收到所述负载检测控制信号时，检测所述通信接口是否与负载电连接，并在检测到所述通信接口不与负载电连接时向所述控制子电路发送未接入负载指示信号；以及
    所述控制子电路还用于在接收到所述未接入负载指示信号后，控制所述电源装置停止为所述通信接口提供充电电压。
  3. 如权利要求2所述的充电控制电路，其中，所述控制子电路，还用于在接收到所述未接入负载指示信号后，间隔预设时间控制启动所述电源装置，以使得所述电源装置为所述通信接口提供充电电压，并向所述负载检测子电路发送负载检测控制信号。
  4. 根据权利要求2所述的充电控制电路，其中，所述控制子电 路包括控制单元及开关单元，所述控制单元分别与所述第一导电部及所述开关单元的控制端连接，所述开关单元的第一输出端与所述通信接口连接，所述开关单元的第二输出端与所述负载检测子电路连接；
    其中，所述控制单元，用于在接收到所述未接入负载指示信号后，向所述开关单元的控制端输入高电平信号，导通所述开关单元，通过所述通信接口向所述电源装置发送电源关闭控制信号，所述电源关闭控制信号，用于控制所述电源装置停止为所述通信接口提供充电电压。
  5. 如权利要求4所述的充电控制电路，其中，所述开关单元包括开关晶体管，所述开关晶体管的第一极与所述控制单元连接，所述开关晶体管的第二极与所述通信接口连接，所述开关晶体管的第三极与所述负载检测子电路连接。
  6. 根据权利要求5所述的充电控制电路，其中，所述负载检测子电路包括负载检测单元、跨接电阻、检流电阻及滤波电容，所述负载检测单元与所述控制单元连接，所述负载检测单元还与所述跨接电阻的第一端连接，所述跨接电阻的第二端及所述检流电阻的第一端分别与所述开关晶体管的第三极连接，所述滤波电容的第一端与所述跨接电阻的第一端连接，所述滤波电容的第二端与所述检流电阻的第二端连接，且所述检流电阻的第二端接地；以及
    所述负载检测单元，用于在接收到所控制单元输入的负载检测控制信号后，检测所述通信接口是否与负载电连接，并在检测到所述通信接口不与负载电连接时，向所述控制单元发送未接入负载指示信号。
  7. 根据权利要求1所述的充电控制电路，其中，所述绝缘部包括第一条形绝缘部及第二条形绝缘部，所述第一导电部的第一侧边与所第二导电部的第一侧边通过所述第一条形绝缘部连接，所述第一导电部的第二侧边与所述第二导电部的第二侧边通过所述第二条形绝缘部连接。
  8. 根据权利要求1所述的充电控制电路，其中，所述通信接口外壳包括外壳本体及独立于所述外壳本体之外的弹片，将所述弹片作为所述第一导电部，将所述外壳本体作为所述第二导电部，将所述外 壳本体与所述弹片之间的绝缘介质作为所述绝缘部。
  9. 一种充电电路，包括如权利要求1至8中任一项权利要求所述的充电控制电路，及与所述充电控制电路的所述通信接口电连接的电源装置。
  10. 根据权利要求9所述的充电电路，其中，所述电源装置包括充电电源和电源控制芯片；
    所述充电电源通过所述电源控制芯片与所述通信接口电连接；以及
    所述控制子电路，用于当检测到所述第一导电部的电压由第一电压变为第二电压时，通过所述通信接口向所述电源控制芯片发送电源开启控制信号，以控制所述电源控制芯片启动所述充电电源，以使得所述充电电源为所述通信接口提供充电电压。
  11. 一种电子设备，包括如权利要求9或10所述的充电电路。
  12. 一种充电控制方法，应用于如权利要求9所述的充电电路，包括：
    当检测到所述第一导电部的电压由第一电压变为第二电压时，控制启动与所述通信接口电连接的电源装置，以使得所述电源装置为所述通信接口提供充电电压。
  13. 如权利要求12所述的充电控制方法，还包括：
    在检测到所述第一导电部的电压由第一电压变为第二电压后，所述控制子电路向所述负载检测子电路发送负载检测控制信号；
    在接收到所述负载检测控制信号时，所述负载检测子电路检测所述通信接口是否与负载电连接，并在检测到所述通信接口不与负载电连接时，向所述控制子电路发送未接入负载指示信号；以及
    在接收到所述未接入负载指示信号后，控制所述电源装置停止为所述通信接口提供充电电压。
  14. 如权利要求13所述的充电控制方法，还包括：
    在接收到所述未接入负载指示信号后，所述控制子电路间隔预设时间控制启动所述电源装置，以使得所述电源装置为所述通信接口提 供充电电压，并向所述负载检测子电路发送负载检测控制信号。
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CN207705816U (zh) * 2017-10-30 2018-08-07 深圳市鑫嘉恒科技有限公司 一种改进型移动电源充电接口
CN109167420A (zh) * 2018-10-31 2019-01-08 维沃移动通信有限公司 一种充电控制电路、充电电路及充电控制方法

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EP3876382A4 (en) 2021-12-01
CN109167420B (zh) 2020-11-03

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