Wireless charging fault detection system

Abstract

The utility model relates to the technical field of wireless charging detection, in particular to a wireless charging fault detection system, which comprises a transmitting end detection module, a receiving end detection module, a magnetic field intensity detector and an upper computer, and is characterized in that the transmitting end detection module comprises a voltage detection module, an analog-to-digital converter and a communication module; the voltage detection module, the analog-to-digital converter and the communication module are electrically connected in sequence; the receiving end detection module comprises a photoelectric coupling module, an analog-to-digital converter and a communication module, the photoelectric coupling module is electrically connected with the input end of the analog-to-digital converter, and the output end of the analog-to-digital converter is electrically connected with the communication module; the magnetic field intensity detector is arranged between the magnetic field ranges of the wireless charging transmitter and the wireless charging receiver, and the transmitting end detection module, the receiving end detection module and the magnetic field intensity detector are respectively in communication connection with the upper computer. The fault position can be quickly determined, and all parts of the wireless charging system can be comprehensively monitored.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless charging detection, in particular to a wireless charging fault detection system. Background Art

[0002] Wireless charging technology can realize non-contact energy transmission between a charger and a device. With its characteristic of charging without cable connection, it meets consumers' pursuit of convenient charging and improves the flexibility and convenience of charging.

[0003] However, while wireless charging technology brings convenience, there are also some additional problems. Since a wireless charging system usually consists of multiple parts such as a charger, a receiver, and a battery management system, only when these parts work together can effective energy transmission be achieved. Once a fault occurs in the wireless charging system, because these parts are not integrated into one body, one part is installed on the charger device and the other part is integrated and installed together when the enterprise manufactures the product device, it is very difficult to quickly and accurately determine the specific location of the fault, and the charger device or the product device needs to be disassembled. Compared with the traditional wired charging system, where only the charger or the cable needs to be confirmed whether it is normal to confirm the fault location, the fault detection of wireless charging technology is more complex. Summary of the Utility Model

[0004] To solve the above problems, the utility model provides a wireless charging fault detection system, which is applied to a wireless charging transmitter and a wireless charging receiver. The system includes a transmitting end detection module, a receiving end detection module, a magnetic field intensity detector, and a host computer. The transmitting end detection module is arranged inside the wireless charging transmitter and includes a voltage detection module, an analog-to-digital converter, and a communication module, which are electrically connected in sequence; the receiving end detection module is arranged inside the wireless charging receiver and includes an opto-coupler module, an analog-to-digital converter, and a communication module. The opto-coupler module is electrically connected to the input end of the analog-to-digital converter, and the output end of the analog-to-digital converter is electrically connected to the communication module; the magnetic field intensity detector is arranged between the magnetic field ranges of the wireless charging transmitter and the wireless charging receiver, and the transmitting end detection module, the receiving end detection module, and the magnetic field intensity detector are respectively communicatively connected to the host computer.

[0005] Among them, the wireless charging transmitter includes a power adapter, an inverter, and a power output coil, and the output end of the inverter is electrically connected to the voltage detection module.

[0006] The wireless charging receiver includes a power receiving coil and a rectifying circuit, and the output end of the power receiving coil is connected in parallel with the opto-coupler module.

[0007] To prevent the reverse current transmission of the optoelectronic coupling module from affecting the detection result, the receiving end detection module further includes an isolation coupler, and the isolation coupler is electrically connected to the output end of the optoelectronic coupling module and the input end of the analog-to-digital converter respectively.

[0008] In a specific embodiment, the optoelectronic coupling module uses a TWS357C transistor optocoupler.

[0009] The analog-to-digital converter is an ADC-LTC2325.

[0010] To prompt and alarm the fault detection result, the upper computer is further provided with a buzzer.

[0011] When the buzzer sounds two short beeps and one long beep, it is a fault alarm for the wireless charging transmitter; when the buzzer sounds one long beep and one short beep, it is a fault alarm for the wireless charging receiver.

[0012] Beneficial effects: The present utility model is a wireless charging fault detection system. By using the transmitting end detection module and the receiving end detection module to respectively detect the faults of the wireless charging transmitter and the wireless charging receiver, comprehensive monitoring of each part of the wireless charging system is realized, and the accuracy and efficiency of fault detection are improved. Once a fault occurs, the fault location can be quickly determined, avoiding the cumbersome steps of disassembling the charger device or the product device, and reducing the maintenance cost and time cost. At the same time, the magnetic field intensity between the wireless charging transmitter and the wireless charging receiver is real-time detected by a magnetic field intensity detector to judge the wireless charging fault caused by external magnetic field interference. The upper computer is also provided with a buzzer, and different alarm sounds can be used to distinguish the fault types of the wireless charging transmitter and the wireless charging receiver, further improving the intuitiveness and convenience of fault detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the wireless charging fault detection system. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the drawings.

[0015] This embodiment provides a wireless charging fault detection system. Refer to Figure 1, including a transmitting - end detection module, a receiving - end detection module, a magnetic - field intensity detector, and a host computer. The wireless charging fault detection system is applied to a wireless charging transmitter and a wireless charging receiver, and can detect faults in the operation and transmission of the wireless charging transmitter and the wireless charging receiver. By setting the transmitting - end detection module inside the wireless charging transmitter, it can detect faults in the working voltage when the wireless charging transmitter is operating, and detect the working voltage value to determine whether the voltage of the wireless charging transmitter is too low; by setting the receiving - end detection module inside the wireless charging receiver, it can detect faults in the induced current of the wireless charging receiver, and detect and judge whether the wireless charging receiver generates an induced current under the action of a magnetic field; by setting the magnetic - field intensity detector between the magnetic - field ranges of the wireless charging transmitter and the wireless charging receiver, it is used to detect its magnetic - field intensity to determine whether it is affected by an external magnetic field. The transmitting - end detection module, the receiving - end detection module, and the magnetic - field intensity detector are respectively communicatively connected to the host computer.

[0016] Specifically, the transmitting - end detection module includes a voltage - detection module, an analog - to - digital converter, and a communication module. The voltage - detection module, the analog - to - digital converter, and the communication module are electrically connected in sequence; the receiving - end detection module includes an opto - coupling module, an analog - to - digital converter, and a communication module. The opto - coupling module is electrically connected to the input end of the analog - to - digital converter, and the output end of the analog - to - digital converter is electrically connected to the communication module. The opto - coupling module uses a TWS357C transistor opto - coupler. The analog - to - digital converter can use an ADC - LTC2325.

[0017] To achieve fault detection of the wireless charging transmitter, the wireless charging transmitter includes a power adapter, an inverter, and a power - output coil. The voltage - detection module of the transmitting - end detection module is electrically connected to the output end of the inverter. The wireless charging transmitter is powered through the power adapter and delivers electrical energy to the inverter. After being frequency - converted by the inverter, the electrical energy is transmitted to the power - output coil, and the power - output coil generates a magnetic field through electromagnetic induction. The voltage - detection module detects the working voltage at the output end of the inverter in real - time and transmits the detected electrical signal to the analog - to - digital converter. The analog - to - digital converter converts the electrical signal into a digital signal, and the digital signal is transmitted to the host computer through the communication module. It can detect the working voltage of the wireless charging transmitter through the transmitting - end detection module to determine whether the wireless charging transmitter cannot perform wireless charging due to low voltage.

[0018] In order to implement fault detection for a wireless charging receiver, the wireless charging receiver includes a power receiving coil and a rectifier circuit. The power receiving coil can sense the magnetic field signal transmitted by the power output coil, generate an electrical signal through electromagnetic induction, and transmit the electrical signal to the rectifier circuit for rectification and conversion into direct current to directly charge the battery. The opto-coupler module of the receiving-end detection module is connected in parallel with the output end of the power output coil. The opto-coupler module is used to detect the induced current of the power receiving coil. Compared with traditional current transformers, it can avoid the influence of the magnetic field of the power output coil on the current transformer, resulting in inaccurate detection results and inability to confirm whether the detection signal of the current transformer is the output signal of the power receiving coil, thus unable to judge the fault of the wireless charging receiver. The opto-coupler module can collect the electrical signal of the power receiving coil, and by converting the electrical signal into an optical signal and then converting the optical signal back into an electrical signal, it realizes the detection of the electrical signal of the power receiving coil and avoids the influence of the magnetic field on the detection result.

[0019] At the same time, the receiving-end detection module further includes an isolation coupler. The isolation coupler is electrically connected to the output end of the opto-coupler module and the input end of the analog-to-digital converter respectively. The opto-coupler module transmits the detection signal to the analog-to-digital converter through the isolation coupler for analog signal digital conversion. The isolation coupler can isolate the detection signal of the opto-coupler module to prevent the reverse transmission of the current of the analog-to-digital converter from affecting the accuracy of the detection signal of the opto-coupler module. The analog-to-digital converter transmits the digital signal to the communication module and sends it to the host computer through the communication module. The receiving-end detection module detects the induced current signal of the wireless charging receiver to determine whether the wireless charging receiver cannot be charged due to the absence of an induced current.

[0020] The host computer obtains the detection signals of the transmitting-end detection module, the receiving-end detection module, and the magnetic field intensity detector respectively. The host computer is also provided with a buzzer. By setting the alarm sound of the buzzer, two short beeps and one long beep of the buzzer indicate a fault alarm of the wireless charging transmitter; one long beep and one short beep indicate a fault alarm of the wireless charging receiver. The buzzer is used to prompt the fault detection result of the wireless charging system. When the magnetic field intensity detector detects that the magnetic field intensity between the wireless charging transmitter and the wireless charging receiver is weak, and the opto-coupler module of the receiving-end detection module does not detect an electrical signal, and the voltage detection module of the transmitting-end detection module detects that the working voltage is normal, it is an external magnetic field interference; when the detection result of the voltage detection module is lower than the standard working voltage, it is a fault of the wireless charging transmitter, and the buzzer alarms two short beeps and one long beep. When the magnetic field intensity detector detects a strong magnetic field intensity and the transmitting-end detection module detects that the working voltage is normal, and the opto-coupler module of the receiving-end detection module detects that the current signal is absent or less than the standard current threshold, it is a fault of the wireless charging receiver, and the buzzer alarms one long beep and one short beep.

Claims

1. A wireless charging fault detection system, applied to a wireless charging transmitter and a wireless charging receiver, characterized in that It includes a transmitting-end detection module, a receiving-end detection module, a magnetic field intensity detector and a host computer. The transmitting-end detection module is arranged inside the wireless charging transmitter and includes a voltage detection module, an analog-to-digital converter and a communication module. The voltage detection module, the analog-to-digital converter and the communication module are electrically connected in sequence. The receiving-end detection module is arranged inside the wireless charging receiver and includes an optocoupler module, an analog-to-digital converter and a communication module. The input end of the analog-to-digital converter is electrically connected to the optocoupler module, and the output end of the analog-to-digital converter is electrically connected to the communication module. The magnetic field intensity detector is arranged between the magnetic field ranges of the wireless charging transmitter and the wireless charging receiver. The transmitting-end detection module, the receiving-end detection module and the magnetic field intensity detector are respectively communicatively connected to the host computer.

2. The wireless charging fault detection system according to claim 1, wherein The wireless charging transmitter includes a power adapter, a frequency converter and a power output coil. The output end of the frequency converter is electrically connected to the voltage detection module.

3. The wireless charging fault detection system according to claim 1, characterized in that, The wireless charging receiver includes a power receiving coil and a rectifying circuit. The output end of the power receiving coil is connected in parallel with the optocoupler module.

4. The wireless charging fault detection system according to claim 1, wherein The receiving-end detection module further includes an isolation coupler. The isolation coupler is respectively electrically connected to the output end of the optocoupler module and the input end of the analog-to-digital converter.

5. The wireless charging fault detection system according to claim 1, wherein The optocoupler module uses a TWS357C transistor optocoupler.

6. The wireless charging fault detection system according to claim 1, characterized in that The analog-to-digital converter is an ADC-LTC2325.

7. The wireless charging fault detection system according to claim 1, wherein, The host computer is also provided with a buzzer.

8. The wireless charging fault detection system according to claim 7, wherein When the buzzer sounds two short beeps and one long beep, it is a fault alarm for the wireless charging transmitter; when the buzzer sounds one long beep and one short beep, it is a fault alarm for the wireless charging receiver.

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