Charger, electronic equipment and charging control method

Abstract

The invention relates to the technical field of electronic equipment charging, and relates to a charging control method, which comprises the following steps: sending a first verification signal which is used for detecting a physical connection state of a charger and to-be-charged electronic equipment; monitoring a connection request signal sent by the to-be-charged electronic equipment in response to the first verification signal; and when the connection request signal is monitored, sending out a safety verification request, carrying out protocol handshake with the electronic equipment, and adjusting the output state of the discharge port of the charger according to the protocol handshake. The invention also provides a charger and an electronic device. According to the invention, the safety of the charger in use can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic device charging, and in particular to a charger, an electronic device and a charging control method. Background Art

[0002] The magnetic probe charger utilizes the adsorption force of magnets. The magnetic probe charger attracts the magnetic parts on the device to be charged through the built-in magnet to achieve a tight fit, and forms a physical connection with the charging contacts on the device to be charged through the probe (Pogo Pin), thereby transmitting current for charging.

[0003] Magnetic probe chargers are usually equipped with two probes, one probe is positive and the other probe is negative. The magnetic probe charger charges the device by magnetically adsorbing the two probes to the charging contacts of the device. Usually, the two probes of the magnetic probe charger are directly exposed to the air. As long as the magnetic probe charger is plugged into the socket, the positive probe will be charged. It is very easy to burn out the magnetic probe charger when it encounters water or short circuit, and it may even cause a fire, posing a safety hazard. Summary of the invention

[0004] In order to improve the safety of a charger when in use, a charger, an electronic device and a charging control method are provided.

[0005] In order to achieve the above-mentioned object of the present invention, the present invention provides a charger.

[0006] The present invention provides a charger, comprising:

[0007] The charger body is provided with a discharge port;

[0008] A first sending module, used for sending a first verification signal;

[0009] A first monitoring module, used to monitor a connection request signal sent by the electronic device to be charged in response to the first verification signal;

[0010] The first processing module is used to send a safety verification request to the electronic device to be charged when the connection request signal is detected, and to perform a protocol handshake with the electronic device, and to adjust the output state of the discharge port according to the protocol handshake.

[0011] Optionally, it further includes a first switch unit, which is controlled by the first processing module and is used to adjust the connection state between the discharge port and the output port of the charger charging chip in the charger body.

[0012] Optionally, the first verification signal and the connection request signal are both electrical signals;

[0013] The discharge port includes a first connection end and a second connection end;

[0014] The signal output end of the first sending module is connected to the first connection end. When the charger body is powered on, the first sending module sends a first verification signal through the first connection end with a period of time T;

[0015] The signal input end of the first monitoring module is connected to the second connection end, and the first monitoring module receives a connection request signal sent by the electronic device through the second connection end;

[0016] The first connection end is connected to the VBUS end of the charger chip, and the second connection end is connected to the ground end of the charger chip; the VBUS end of the charger chip is used to provide the required power to the electronic device.

[0017] In order to solve the above problems, the present invention also provides an electronic device, an electronic device body, and the electronic device body is provided with a charging interface;

[0018] A second monitoring module, used to monitor a first verification signal sent by the charger;

[0019] A second sending module, used for sending a connection request signal when the first verification signal is detected;

[0020] A second receiving module, configured to receive a safety verification request sent by the charger in response to the connection request signal;

[0021] The second processing module is used to respond to the safety verification request and shake hands with the charger protocol, and adjust the input state of the charging interface according to the protocol handshake.

[0022] Optionally, a second switch unit is further included, which is controlled by the second processing module and is used to adjust the connection state between the charging interface and the input port of the electronic device charging chip in the electronic device body.

[0023] Optionally, the first verification signal and the connection request signal are both electrical signals;

[0024] The charging interface includes a third connection terminal and a fourth connection terminal.

[0025] The signal output end of the second sending module is connected to the fourth connection end, and the second sending module sends a connection request signal through the fourth connection end;

[0026] The signal input end of the second receiving module is connected to the third connection end, and the second receiving module receives the first verification signal through the third connection end;

[0027] The third connection terminal is connected to the VBUS terminal of the electronic device charging chip, and the fourth connection terminal is connected to the ground terminal of the electronic device charging chip; the VBUS terminal of the electronic device charging chip is used to distribute and transmit current.

[0028] In order to solve the above problem, the present invention further provides a charging control method, which is applied to the above charger, and the method comprises:

[0029] Sending a first verification signal, where the first verification signal is used to detect a physical connection state between the charger and the electronic device to be charged;

[0030] monitoring a connection request signal sent by the electronic device to be charged in response to the first verification signal;

[0031] When the connection request signal is detected, a safety verification request is issued, a protocol handshake is performed with the electronic device, and the output state of the charger discharge port is adjusted according to the protocol handshake.

[0032] Optionally, when the connection request signal is detected, the charger establishes a connection bus with the electronic device to be charged through the discharge port;

[0033] The connection bus includes the serial bus and the ground line.

[0034] One end of the serial bus is used to connect to the VBUS end of the charger chip, and the other end is used to connect to the VBUS end of the charging chip of the electronic device to be charged;

[0035] One end of the ground wire is used to connect to the ground terminal of the charging chip of the charger, and the other end is connected to the ground terminal of the charging chip of the electronic device to be charged;

[0036] The steps of the charger and electronic device protocol handshake include:

[0037] Monitoring a second verification signal sent by the electronic device in response to a security verification request:

[0038] If the second verification signal is detected, the circuit between the ground wire and the ground terminal of the charger chip is connected, and a first connection signal is sent;

[0039] The monitoring electronic device sends a third verification signal after connecting the electronic device charging chip with the serial bus in response to the first connection signal:

[0040] If the third verification signal is detected, the protocol handshake between the charger and the electronic device is successful, the VBUS end of the charger chip is connected to the serial bus, and a connected loop is formed between the charger, the connection bus and the electronic device;

[0041] If the third verification signal is not detected, the protocol handshake fails, and the circuit between the ground wire and the ground terminal of the charger chip is disconnected.

[0042] In order to solve the above problem, the present invention further provides a charging control method, which is applied to the above electronic device, and the method comprises:

[0043] Monitoring a first verification signal sent by the charger;

[0044] sending a connection request signal when a first verification signal is detected;

[0045] receiving a safety verification request sent by the charger in response to the connection request signal;

[0046] Respond to the safety verification request and handshake with the charger protocol, and adjust the input state of the charging interface according to the protocol handshake.

[0047] Optionally, when the charger detects the connection request signal, the electronic device establishes a connection bus with the charger through the charging interface;

[0048] The connection bus includes the serial bus and the ground line.

[0049] One end of the serial bus is used to connect to the VBUS end of the charger chip, and the other end is used to connect to the VBUS end of the charging chip of the electronic device to be charged.

[0050] One end of the ground wire is used to connect to the ground terminal of the charging chip of the charger, and the other end is connected to the ground terminal of the charging chip of the electronic device to be charged;

[0051] The steps of the electronic device and charger protocol handshake include:

[0052] Outputting a second verification signal when receiving a safety verification request, and monitoring a first connection signal sent by the charger after connecting the ground wire with the charging chip of the charger in response to the second verification signal;

[0053] If the first connection signal is detected, the VBUS terminal of the electronic device charging chip is connected to the serial bus, and a third verification signal is sent;

[0054] If the first connection signal is not detected, the protocol handshake fails, and the connection circuit between the ground wire and the electronic device is disconnected.

[0055] In summary, this application includes the following beneficial technical effects:

[0056] Verify that the charger is transmitting power to the electronic device. Verify the physical connection status between the charger and the electronic device in advance to determine whether the charger's discharge port is short-circuited or poorly connected, thereby reducing the possibility of charging safety accidents caused by poorly connected discharge of the charger.

[0057] After the electronic device is successfully connected to the charging part of the charger body, it can receive the first verification signal. When the electronic device to be charged receives the first verification signal, it indicates that the electronic device is successfully connected to the charger body and the charger can normally power the electronic device. At this time, the electronic device to be charged will send a connection request signal to inform the charger that the physical connection with the electronic device to be charged is successful;

[0058] Before supplying power to the electronic device, the charger is controlled to perform a protocol handshake with the electronic device, and the current value of the charger main body output current and the on-off of the power supply circuit between the electronic device, the connection bus and the charger are controlled according to the result of the protocol handshake, thereby reducing the possibility of charging accidents caused by abnormal status of the charger or the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 This is a schematic diagram of the structure of the charger and electronic device in this application;

[0060] Figure 2 A schematic diagram of the charging control method provided in this application.

[0061] Figure numerals: 11, first connection terminal; 12, second connection terminal; 13, third connection terminal; 14, fourth connection terminal.

[0062] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0063] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0064] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0065] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0066] Example 1

[0067] Reference Figure 1Embodiment 1 of the present application discloses a charger, which includes a charger body, which includes a charger charging chip and its peripheral circuits. The charger body is connected to an electronic device to be charged through a discharge port and provides electrical energy to the electronic device; the discharge port of the charger body and the charging interface of the electronic device can be connected and fixed by magnetic attraction and / or plug-in.

[0068] Reference Figure 1 and Figure 2 The charger further includes a first sending module, a first monitoring module and a first processing module, wherein:

[0069] The first sending module is capable of sending a first verification signal, where the first verification signal is used to detect the physical connection state between the charger and the electronic device to be charged;

[0070] The first monitoring module is capable of monitoring a connection request signal sent by the electronic device to be charged in response to the first verification signal;

[0071] The first processing module can issue a security verification request when detecting a connection request signal, perform a protocol handshake with the electronic device, and control the connection between the connection bus, the charger body and the electronic device according to the result of the protocol handshake.

[0072] When the charger body is connected to the power source, the first sending module sends a first verification signal with a period of time T, and the first verification signal is used to notify the electronic device of the status of the charger;

[0073] After the electronic device is successfully connected to the charging part of the charger body, it can receive the first verification signal. When the electronic device to be charged receives the first verification signal, it indicates that the electronic device is successfully connected to the charger body and the charger can normally power the electronic device. At this time, the electronic device to be charged will send a connection request signal, and the connection request signal is used to inform the charger that the charger is physically connected to the electronic device to be charged successfully;

[0074] After completing the verification of the connection status between the charger and the electronic device, a protocol handshake is performed with the electronic device before powering the electronic device, and the current value of the charger body output current is controlled according to the result of the protocol handshake: if the protocol handshake between the charger and the electronic device is successful, it proves that there is no abnormality in the status of the charger and the electronic device, the circuit between the charger and the connection bus is connected, and the circuit between the electronic device and the connection bus is connected, and the current output by the charger can charge the electronic device through the connection bus; if the protocol handshake between the charger and the electronic device fails, it indicates that there is an abnormality in the charger and / or the electronic device, disconnect all connections between the electronic device and the connection bus, and disconnect all connections between the charger and the connection bus, so that the circuits of the electronic device, the connection bus and the charger are in a disconnected state, reducing the possibility of charging accidents caused by abnormal status of the charger or the electronic device.

[0075] The charger also includes a first switch unit, which is controlled by the first processing module and is used to adjust the connection state between the discharge port and the output port of the charger charging chip in the charger body.

[0076] The discharge port includes a first connection terminal 11 and a second connection terminal 12, and the first connection terminal 11 and the second connection terminal 12 are made of conductive metal; the signal output terminal of the first sending module is connected to the first connection terminal 11; the first connection terminal 11 is connected to the VBUS terminal of the charger charging chip, and the second connection terminal 12 is connected to the ground terminal of the charger charging chip; the VBUS terminal of the charger charging chip is used to provide the required power for the electronic device.

[0077] When the charger body is powered on, the first sending module sends a first verification signal through the first connection terminal 11 with a period of time T; the signal input terminal of the first monitoring module is connected to the second connection terminal 12, and the first monitoring module receives a connection request signal sent by the electronic device through the second connection terminal 12; when the connection request signal is detected, the charger establishes a connection bus with the electronic device to be charged through the discharge port.

[0078] Reference Figure 1 The connection bus includes a serial bus and a ground wire. One end of the serial bus is used to connect to the first connection terminal 11, and the other end is used to connect to the VBUS terminal of the charging chip of the electronic device to be charged. The VBUS terminal of the electronic device charging chip is used to distribute and transmit current; one end of the ground wire is used to connect to the second connection terminal 12, and the other end is used to connect to the ground terminal of the charging chip of the electronic device to be charged.

[0079] It should be noted that the charger chip is a chip built into the charger. In some embodiments, the charger chip may be composed of an integrated circuit, for example, a single packaged integrated circuit, or a plurality of integrated circuits with the same or different functions, including one or more central processing units (CPU), microprocessors, digital processing chips, graphics processors, and combinations of various control chips. In this embodiment, the charger chip may be a variety of models such as IP5389, IP6808, IP3254, and CM1003-SBD, which are not limited in this embodiment.

[0080] The first switch unit includes a first VBUS switch circuit and a first GND switch circuit. The first VBUS switch circuit is used to control the on-off between the serial bus and the VBUS end of the charger charging chip, and the first GND switch circuit is used to control the on-off between the ground line and the ground end of the charger charging chip; the first VBUS switch circuit can be designed by an ordinary single-pole double-throw switch, or it can be designed based on an NMOS tube or a PMOS tube. The input voltage is adjusted by controlling the first VBUS switch unit, thereby adjusting the output state of the charger discharge port.

[0081] Reference Figure 1 The electronic device to be charged is provided with a charging interface adapted to the discharge port, the charging interface includes a third connection terminal 13 and a fourth connection terminal 14, the third connection terminal 13 is matched with the first connection terminal 11 by magnetic attraction, and the fourth connection terminal 14 is matched with the second connection terminal 12 by magnetic attraction.

[0082] In one example of this embodiment, the first connection end 11 and the second connection end 12 are made of ferromagnetic metal, and the third connection end 13 and the fourth connection end 14 are made of magnets; in another example of this embodiment, the first connection end 11 and the second connection end 12 are made of magnets, and the third connection end 13 and the fourth connection end 14 are made of ferromagnetic metal.

[0083] When the discharge port is connected to the charging interface, the third connection end 13 and the first connection end 11 are tightly fitted by magnetic force, and the fourth connection end 14 and the second connection end 12 are tightly fitted by magnetic force, thereby reducing the possibility of disconnection of the connection between the charger and the electronic device due to external force during the charging process of the electronic device, reducing the possibility of false connection between the charging interface and the discharge port, and improving the safety of the electronic device when charging.

[0084] Reference Figure 1 and Figure 2The signal output end of the first sending module is connected to the first connection end 11. When the charger body is powered on, the first sending module sends a first verification signal through the first connection end 11 with a period of time T; the signal input end of the first monitoring module is connected to the second connection end 12. The first monitoring module receives a connection request signal sent by the electronic device through the second connection end 12;

[0085] The first verification signal and the connection request signal can be optical signals or electrical signals. When the first verification signal and the connection request signal are optical signals, an optical signal receiver is provided at the charging interface of the electronic device and the discharge port of the charger body. The optical signal receiver determines the signal type by the energy carried by the received signal to control the connection and disconnection between the charger and the electronic device.

[0086] In the scheme in which the first verification signal and the connection request signal are electrical signals, the first verification signal and the connection request signal are represented by different voltage values. After the physical interface between the electronic device and the charger is successfully connected, the electrical signal emitted by the electronic device can be transmitted to the charger chip through the second connection terminal 12 to realize the reception of the connection request signal.

[0087] The charger further includes an analysis module, which is used to determine the type of the received signal according to the voltage value of the electrical signal received by the second connection terminal 12;

[0088] To facilitate understanding by those skilled in the art, the working process of the analysis module is described below with reference to specific examples:

[0089] The voltage value corresponding to the first verification signal is set to V1, the voltage value corresponding to the connection request signal is set to V2 (V1≠V2), and the voltage value of the electrical signal received by the second connection terminal 12 is monitored in real time:

[0090] If the voltage value received by the second connection terminal 12 is V2, it indicates that the model received by the second connection terminal 12 is a connection request signal, indicating that the physical connection between the charger and the electronic device is normal;

[0091] If the voltage value received by the second connection terminal 12 is V1, the voltage value received by the second connection terminal 12 is the first verification signal sent by the first connection terminal 11, and there is a risk of short circuit between the first connection terminal 11 and the second connection terminal 12 of the discharge port; the analysis module is communicatively connected to the early warning module, and when the voltage value received by the second connection terminal 12 is V1, the analysis module sends a warning signal to the early warning module to control the early warning module to disconnect the fuse of the charger body and send out an alarm to remind the user to check the status of the charger in time.

[0092] By analyzing and monitoring the voltage value of the electrical signal received by the second connection terminal 12, when a short circuit occurs at the discharge port of the charger, the current transmitted by the power supply can be cut off in time and a prompt can be given to the user, thereby reducing the possibility of the charger being burned out due to a short circuit and further improving the safety of the charger during use.

[0093] Reference Figure 1 In order to facilitate the understanding of those skilled in the art, the following describes the protocol handshake process between the charger and the electronic device in combination with a specific example:

[0094] The first connection terminal 11 is connected to the ground line (S-GND), and the second connection terminal 12 is connected to the serial bus (S-BUS); the S-BUS line is a serial communication protocol proposed by Futaba, the full name is Serial Bus, S-BUS is a digital serial communication interface; S-BUS can connect multiple devices, each device is connected to S-BUS through a HUB to obtain its own control information. S-BUS can transmit 16 proportional channels and 2 digital channels; GND is the abbreviation of Ground, and the GND line represents the ground line or 0 line. In electronic equipment, GND usually refers to the common reference point, which is the ground line in the circuit. Its main function is to provide a common voltage reference point to ensure the normal operation of the circuit. GND plays a vital role in the circuit,

[0095] When the charger is connected to the power source, the first sending module is controlled to output an electrical signal with a voltage value of V1 through the first connection terminal 11 with a period of time T;

[0096] The charger chip monitors the voltage value of the electrical signal received by the first monitoring module; if the voltage value of the electrical signal received by the first monitoring module through the second connection terminal 12 is V1, the connection between the charger chip and the power output terminal is interrupted and an alarm is issued;

[0097] After the charger is connected to the electronic device, when the second monitoring module receives the electrical signal with a voltage value of V1 (the first verification signal), the second sending module sends an electrical signal with a voltage value of V2 (the connection request signal). After the first monitoring module receives the electrical signal with a voltage value of V2, it determines that the physical connection state between the charger and the electronic device to be charged is normal; at this time, the charger chip establishes a connection between the ground terminal of the charger chip and the ground wire time;

[0098] The ground terminal of the electronic device charging chip is connected to the end of the ground wire away from the charger. When the ground terminal of the electronic device charging chip is connected to the ground wire, the ground terminal of the electronic device charging chip can read GND; when the ground terminal of the electronic device charging chip reads GND, the first VBUS switch tube between the VBUS terminal of the charger charging chip and the serial bus is adjusted to a conducting state, so that the circuit between the VBUS terminal of the electronic device charging chip and the serial bus is connected; after the circuit between the VBUS terminal of the electronic device charging chip and the serial bus is connected, an electrical signal (recorded as a third verification signal) is output on the serial bus;

[0099] The third verification signal is transmitted to the charger chip through the second connection terminal 12. After receiving the third verification signal, the charger chip adjusts the first VBUS switch tube between the VBUS terminal of the charger chip and the serial bus to the on state, thereby connecting the circuit between the VBUS terminal of the charger chip and the serial bus, completing the entire pre-charging protocol handshake, and connecting the circuits between the charger, the connection bus and the electronic device. The charger transmits the power of the power supply to the electronic device to charge the battery of the electronic device.

[0100] In order to improve the safety of electronic devices when charging, if any abnormality is found during charging of the electronic device (using the environment temperature being too high, the environment temperature being too low, overcharging, etc.), the serial bus (S-BUS) can be grounded at the fourth connection terminal 14. After the first monitoring module detects that the connection bus is grounded, the charger chip automatically disconnects the power supply and stops charging. Subsequently, the first sending module is controlled to intermittently output the first verification signal, waiting for the charger to reconnect and verify with the electronic device.

[0101] Example 2

[0102] Reference Figure 1 Based on the same inventive concept, the present application also discloses an electronic device, which is compatible with the charger in Example 1. The electronic device includes an electronic device body, which is provided with a charging interface. The electronic device body is connected to the charger through the charging interface to receive electric energy provided by the charger.

[0103] Reference Figure 1 and Figure 2 The electronic device further includes a second monitoring module, a second sending module, a second receiving module and a second processing module, wherein:

[0104] The second monitoring module is capable of monitoring the first verification signal;

[0105] The second sending module can send a connection request signal when detecting the first verification signal;

[0106] The second receiving module is capable of receiving a safety verification request sent by the charger in response to the connection request signal;

[0107] The second processing module can respond to the safety verification request and shake hands with the charger protocol to control the connection and disconnection between the electronic device body, the charger and the connection bus.

[0108] The electronic device also includes a second switch unit, which is controlled by the second processing module and is used to adjust the connection state between the charging interface and the input port of the electronic device charging chip in the electronic device body.

[0109] Reference Figure 1 and Figure 2 The charging interface includes a third connection terminal 13 and a fourth connection terminal 14, the third connection terminal 13 is connected to the VBUS terminal of the electronic device charging chip, and the fourth connection terminal 14 is connected to the ground terminal of the electronic device charging chip; the VBUS terminal of the electronic device charging chip is used to distribute and transmit current; the electronic device charging chip is a chip built into the electronic device, and the electronic device charging chip can adopt multiple models such as IP5389, IP6808, IP3254 or CM1003-SBD, which is not limited in this embodiment.

[0110] The third connection terminal 13 can be connected to the VBUS terminal of the charger charging chip through a serial bus, the fourth connection terminal 14 can be connected to the ground terminal of the charger charging chip through a ground wire, the signal output terminal of the second sending module is connected to the fourth connection terminal 14, and the second sending module sends a connection request signal through the fourth connection terminal 14; the signal input terminal of the second receiving module is connected to the third connection terminal 13, and the second receiving module receives the first verification signal through the third connection terminal 13.

[0111] The second switch unit includes a second VBUS switch circuit and a second GND switch circuit. The second VBUS switch circuit is used to control the on-off between the serial bus and the VBUS end of the electronic device charging chip, and the second GND switch circuit is used to control the on-off between the ground wire and the ground end of the electronic device charging chip; the second VBUS switch circuit can be designed by an ordinary single-pole double-throw switch, or it can be designed based on an NMOS tube or a PMOS tube, and the output state of the electronic device charging interface is controlled by controlling the second VBUS switch unit.

[0112] Since the electronic device of this embodiment and the above charger are used in combination, Embodiment 1 describes the process of the electronic device and the charger cooperating when introducing the usage scenario of the charger, which will not be repeated here for the sake of simplicity of the specification.

[0113] Reference Figure 1 and Figure 2Based on the above charger, the present invention provides a charging control method. Specifically, the charging control method includes:

[0114] S101. Send a first verification signal.

[0115] When the charger body is powered on, the first sending module sends the first verification signal with a period of time T. The duration of the sending period T and the voltage value V1 corresponding to the first verification signal can be set according to actual needs, and this embodiment does not limit this.

[0116] S102: Monitor a connection request signal sent by the electronic device to be charged in response to the first verification signal.

[0117] The first verification signal and the connection request signal are used together to verify the physical connection state between the charger and the electronic device to be charged; when the discharge port of the charger is engaged with the charging interface of the charging device to be charged, the first connection terminal 11 is connected to the third connection terminal 13, and the second connection terminal 12 is connected to the fourth connection terminal 14;

[0118] When the electronic device detects the first verification signal, it indicates that the first connection terminal 11 and the third connection terminal 13 are in contact, and the verification of the physical connection state of the first connection terminal 11 and the third connection terminal 13 is completed; the electronic device sends a connection request signal when receiving the first verification signal. If the charger receives the connection request signal, it indicates that the second connection terminal 12 and the fourth connection terminal 14 are in contact, and the verification of the physical connection state of the second connection terminal 12 and the fourth connection terminal 14 is completed, thereby realizing the verification of the physical connection state of the charger and the electronic device.

[0119] S103: When a connection request signal is detected, a security verification request is issued, a protocol handshake is performed with the electronic device, and an output state of the discharge interface is adjusted according to the result of the protocol handshake.

[0120] Specifically, when a connection request signal is detected, the charger establishes a connection bus with the electronic device to be charged through the discharge port, and the steps of the protocol handshake between the charger and the electronic device include:

[0121] S111, monitoring a second verification signal sent by the electronic device in response to a security verification request:

[0122] If the second verification signal is detected, a connection is established between the ground wire and the ground terminal of the charging chip, and a first connection signal is sent;

[0123] If the second verification signal is not detected within the preset time T1, the handshake between the charger and the electronic device fails, and then the charger is controlled to continue to send the first verification signal to enter a new round of verification.

[0124] S112, monitoring the third verification signal sent by the electronic device after the electronic device connects the charging chip of the electronic device with the serial bus in response to the first connection signal:

[0125] If the third verification signal is detected, the protocol handshake between the charger and the electronic device is successful, and the VBUS end of the charger chip is connected to the serial bus, so that a connected loop is formed between the charger, the connection bus and the electronic device;

[0126] If the third verification signal is not detected within the preset time T2, the protocol handshake fails, the connection between the ground wire and the charger chip is disconnected, and then the charger is controlled to continue to send the first verification signal to enter a new round of verification.

[0127] Embodiment 4:

[0128] Reference Figure 1 and Figure 2 Based on the same inventive concept, an embodiment of the present invention provides a charging control method, which is applicable to the electronic device described in Embodiment 2. Specifically, the charging control method includes:

[0129] S201. Monitor a first verification signal.

[0130] S202: Send a connection request signal when a first verification signal is detected.

[0131] S203: Receive a safety verification request sent by the charger in response to the connection request signal.

[0132] S204 , responding to the safety verification request and handshaking with the charger protocol, and adjusting the input state of the charging interface according to the protocol handshake.

[0133] The steps of the electronic device and charger protocol handshake include:

[0134] S211, outputting a second verification signal upon receiving a safety verification request, and monitoring a first connection signal sent by the charger after the charger connects the ground wire with the charging chip of the charger in response to the second verification signal;

[0135] If the first connection signal is detected, the first VBUS switch circuit between the VBUS end of the charger chip and the serial bus is set to a conducting state, the VBUS end of the electronic device charging chip is connected to the serial bus, and a third verification signal is sent;

[0136] If the first connection signal is not detected within the preset time T3, the protocol handshake fails, the connection between the ground wire and the electronic device is disconnected, and then the charger is controlled to continuously send the first verification signal to enter a new round of verification.

[0137] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "an implementation", "a preferred implementation" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0138] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A charger, characterized in that: include: The charger body is provided with a discharge port; A first sending module, used for sending a first verification signal; A first monitoring module, used to monitor a connection request signal sent by the electronic device to be charged in response to the first verification signal; The first processing module is used to send a safety verification request to the electronic device to be charged when the connection request signal is detected, and to perform a protocol handshake with the electronic device, and to adjust the output state of the discharge port according to the protocol handshake.

2. The charger according to claim 1, characterized in that: It also includes a first switch unit, which is controlled by the first processing module and is used to adjust the connection state between the discharge port and the output port of the charger charging chip in the charger body.

3. The charger according to claim 1 or 2, characterized in that: The first verification signal and the connection request signal are both electrical signals; The discharge port comprises a first connection end (11) and a second connection end (12); The signal output end of the first sending module is connected to the first connection end (11), and when the charger body is powered on, the first sending module sends a first verification signal through the first connection end (11) with a period of time T; The signal input end of the first monitoring module is connected to the second connection end (12), and the first monitoring module receives a connection request signal sent by the electronic device through the second connection end (12); The first connection end (11) is connected to the VBUS end of the charger chip, and the second connection end (12) is connected to the ground end of the charger chip; the VBUS end of the charger chip is used to provide the required electric energy for the electronic device.

4. An electronic device, characterized in that: include: The electronic device body is provided with a charging interface; A second monitoring module, used to monitor a first verification signal sent by the charger; A second sending module, used for sending a connection request signal when the first verification signal is detected; A second receiving module, configured to receive a safety verification request sent by the charger in response to the connection request signal; The second processing module is used to respond to the safety verification request and shake hands with the charger protocol, and adjust the input state of the charging interface according to the protocol handshake.

5. The electronic device according to claim 4, characterized in that: It also includes a second switch unit, which is controlled by the second processing module and is used to adjust the connection state between the charging interface and the input port of the electronic device charging chip in the electronic device body.

6. The electronic device according to claim 4 or 5, characterized in that: The first verification signal and the connection request signal are both electrical signals; The charging interface comprises a third connection terminal (13) and a fourth connection terminal (14), The signal output end of the second sending module is connected to a fourth connection end (14), and the second sending module sends a connection request signal via the fourth connection end (14); The signal input end of the second receiving module is connected to the third connection end (13), and the second receiving module receives the first verification signal through the third connection end (13); The third connection terminal (13) is connected to the VBUS terminal of the electronic device charging chip, and the fourth connection terminal (14) is connected to the ground terminal of the electronic device charging chip; the VBUS terminal of the electronic device charging chip is used to distribute and transmit current.

7. A charging control method, applied to the charger according to claim 1, 2 or 3, characterized in that: The method comprises: Sending a first verification signal, where the first verification signal is used to detect a physical connection state between the charger and the electronic device to be charged; monitoring a connection request signal sent by the electronic device to be charged in response to the first verification signal; When the connection request signal is detected, a safety verification request is issued, a protocol handshake is performed with the electronic device, and the output state of the charger discharge port is adjusted according to the protocol handshake.

8. The charging control method according to claim 7, characterized in that: When the connection request signal is detected, the charger establishes a connection bus with the electronic device to be charged through the discharge port; The connection bus includes the serial bus and the ground line. One end of the serial bus is used to connect to the VBUS end of the charger chip, and the other end is used to connect to the VBUS end of the charging chip of the electronic device to be charged; One end of the ground wire is used to connect to the ground terminal of the charging chip of the charger, and the other end is connected to the ground terminal of the charging chip of the electronic device to be charged; The steps of the charger and electronic device protocol handshake include: Monitoring a second verification signal sent by the electronic device in response to a security verification request: If the second verification signal is detected, the circuit between the ground wire and the ground terminal of the charger chip is connected, and a first connection signal is sent; The monitoring electronic device sends a third verification signal after connecting the electronic device charging chip with the serial bus in response to the first connection signal: If the third verification signal is detected, the protocol handshake between the charger and the electronic device is successful, the VBUS end of the charger chip is connected to the serial bus, and a connected loop is formed between the charger, the connection bus and the electronic device; If the third verification signal is not detected, the protocol handshake fails, and the circuit between the ground wire and the ground terminal of the charger chip is disconnected.

9. A charging control method, applied to the electronic device according to claim 4, 5 or 6, characterized in that: The method comprises: Monitoring a first verification signal sent by the charger; sending a connection request signal when a first verification signal is detected; receiving a safety verification request sent by the charger in response to the connection request signal; Respond to the safety verification request and handshake with the charger protocol, and adjust the input state of the charging interface according to the protocol handshake.

10. The charging control method according to claim 9, characterized in that: When the charger detects the connection request signal, the electronic device establishes a connection bus with the charger through the charging interface; The connection bus includes the serial bus and the ground line. One end of the serial bus is used to connect to the VBUS end of the charger chip, and the other end is used to connect to the VBUS end of the charging chip of the electronic device to be charged. One end of the ground wire is used to connect to the ground terminal of the charging chip of the charger, and the other end is connected to the ground terminal of the charging chip of the electronic device to be charged; The steps of the electronic device and charger protocol handshake include: Outputting a second verification signal when receiving a safety verification request, and monitoring a first connection signal sent by the charger after connecting the ground wire with the charging chip of the charger in response to the second verification signal; If the first connection signal is detected, the VBUS terminal of the electronic device charging chip is connected to the serial bus, and a third verification signal is sent; If the first connection signal is not detected, the protocol handshake fails, and the connection circuit between the ground wire and the electronic device is disconnected.

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