CN103457361A - A device that controls the synchronous rectification switch to transmit data in an inductive power supply - Google Patents

Abstract

The invention relates to a device for controlling a synchronous rectification switch to transmit data in an induction type power supply, which is characterized in that when power supply transmission is carried out between a power supply coil configured by a power supply module and a power receiving coil configured by a power receiving module, the power receiving module is controlled to cut off the operation of a rectification and signal feedback circuit electrically connected with the power receiving coil, so that the power receiving function of the power receiving coil is interrupted in a short time, and the power supply coil of the power supply module loses load effect, so that the amplitude of a power supply carrier signal on the power supply coil is changed, further, the purpose of feeding back a data signal to the power supply module by the power receiving module and transmitting data from the power receiving module to the power supply module in the induction type power supply is achieved, and the purposes of target identification, power setting and the like in power supply operation.

Description

A device that controls the synchronous rectification switch to transmit data in an inductive power supply

technical field

The invention provides a device for controlling the synchronous rectification switch in the inductive power supply to transmit data, especially for controlling the operation of the rectification and signal feedback circuit through the power receiving coil of the power receiving module, and interrupting in a short time The power receiving function enables the signal to be fed back from the power receiving coil to the power supply coil to complete the transmission of data for the purpose of target identification and power setting.

Background technique

In the electromagnetic induction power system, the most important technical problem is that it must be able to identify the object placed on the transmitting coil of the power supply end. When the inductive power supply end sends electric energy, it is the same as the induction cooker for cooking. If this energy is directly hit on the metal, it will generate heat and cause danger. In order to solve this problem, various manufacturers have developed the technology of identifying targets on the power supply end. The receiving coil feeds back the signal to the transmitting coil at the power supply end, and analyzing the signal for identification is the best solution. In order to complete the function of data transmission on the induction coil, it is the most important core technology in the system; however, the induction of power transmission On the coil, it is very difficult to transmit data stably. The main signal carrier is used in high-power power transmission, but this transmission method will be subject to various interference conditions in the use of power supply, and this is a frequency conversion control system , so the operating frequency of the main carrier will not be fixed; and in order to solve the problem of difficult data transmission, some manufacturers have introduced a wireless communication channel besides the original induction coil supply power, such as infrared, bluetooth, RFID tags, WiFi, etc., but due to the additional addition of these communication modules, it also leads to an increase in the manufacturing cost of the system, forming a burden on economic costs.

Furthermore, there are still some technical problems in using the coil of induction power to transmit data, that is, the principle of sending data and receiving data is similar to the data transmission method of RFID, and the main carrier wave is sent from the coil of the power supply end to the power receiving end On the coil, the load change on the control coil on the power receiving end circuit is used for feedback, so the current induction power design is one-way transmission, that is, the power energy (LC oscillation main carrier) is sent from the power supply end to the power receiving end , and then the power receiving end feeds back the data code to the power supply end, and the energy received by the power receiving end from the power supply end is only strong or weak, and does not contain communication components, and this kind of data code transmission mechanism, only the power receiving end is close to the power supply After receiving enough power energy from the terminal, it can feed back. When the power supply terminal does not provide energy to the power receiving terminal, data code transmission cannot be performed. Although it is only an incomplete communication mechanism, it is very important in the induction power system. It is practical and has met the functions required by the system; generally, after the power supply end recognizes the power receiving end as the correct target, it starts to send energy for power transmission, and the power status sent back by the power receiving end is adjusted by the power supply end.

At present, the power receiving end receives power and data feedback architecture, using resistive or capacitive design architecture respectively. The way of resistive modulation feedback signal is derived from passive RFID technology, using the impedance of the receiving coil to switch the feedback signal to the transmitting coil for reading. , and in the later period, in order to reduce the power loss of the feedback time under higher power transmission, the capacitive modulation feedback signal was developed, but these two methods will increase the power output on the power supply terminal during the signal modulation period, and the modulation times Or when the time increases, more power will be lost. The inductive power supply designed in this way is contrary to the basic principle of energy-saving demands of modern products. The aforementioned method will cause the circuit on the receiving end to generate current during the signal modulation period. Impact, resulting in damage to power conversion parts and unstable power supply.

Therefore, how to improve the current inductive power supply when the power supply end and the power receiving end are transmitting power, and at the same time use the induction coil to transmit data, which causes instability. The problems and deficiencies of the cost burden at the terminal end are the direction for the relevant manufacturers engaged in this industry to study and improve.

Contents of the invention

Therefore, in view of the above-mentioned problems and deficiencies, the inventor collected relevant data, evaluated and considered in many ways, and based on years of experience accumulated in this industry, through continuous trials and modifications, he developed the present invention.

The main purpose of the present invention is to provide a device for controlling a synchronous rectification switch to transmit data in an inductive power supply, which includes a power supply module and a power receiving module, and the power supply module includes a power supply microprocessor with a built-in program, and The power supply drive unit, signal analysis circuit, power supply coil voltage detection circuit, display unit, power supply unit and power supply resonant capacitor electrically connected to the power supply microprocessor, and the power supply resonant capacitor is electrically connected to the power supply coil for transmitting electric energy and receiving data signals , a power receiving coil for data signal transmission with the power supply coil is provided on the power receiving module relative to the power supply coil;

The power-receiving module is a power-receiving microprocessor including a built-in program, and the power-receiving microprocessor is electrically connected to a voltage detection circuit, a rectification and signal feedback circuit, an open circuit protection circuit, a voltage stabilizing circuit, and a power-receiving DC step-down circuit. The rectifier and the power receiving coil, and the rectification and signal feedback circuit includes a first resistor electrically connected to the electrodes at both ends of the power receiving coil, a first MOSFET component, a first diode and a second resistor, a second MOSFET component, The second diode is electrically connected to the third resistor and the third MOSFET component electrically connected to the powered microprocessor by the first resistor and the first MOSFET component, and the second resistor and the second MOSFET component are electrically connected to the second diode. The fourth resistor and the fourth MOSFET assembly are electrically connected to the powered microprocessor.

The secondary purpose of the present invention is to control the rectification circuit that the power receiving module is electrically connected to the power receiving coil when the power supply is transmitted between the power supply coil configured by the power supply module and the power receiving coil configured by the power receiving module Switch operation, so that the power receiving coil interrupts the power receiving function in a short time, and the power supply coil of the power supply module will lose the load effect, so that the amplitude of the power supply carrier signal on the power supply coil changes, and then the data signal is transmitted by the power receiving module To the power supply module, and transmit data from the power receiving module to the power supply module in the inductive power supply to complete the purpose of target identification and power setting in the power supply operation.

Another object of the present invention is that the power receiving module is a power receiving microprocessor including a built-in program, and the power receiving microprocessor is electrically connected to the voltage detection circuit, the rectification and signal feedback circuit, the circuit breaker protection circuit, the stabilization circuit, and the power receiving microprocessor respectively. The voltage circuit, the power receiving DC step-down device and the power receiving coil, and the rectification and signal feedback circuit include a first resistor electrically connected to the positive and negative electrodes of the power receiving coil, a first MOSFET component, a first diode and The second resistor, the second MOSFET component, and the second diode are electrically connected to the third resistor and the third MOSFET component that are electrically connected to the powered microprocessor by the first resistor and the first MOSFET component, and use The second resistor and the second MOSFET component are electrically connected to the fourth resistor and the fourth MOSFET component that are also electrically connected to the powered microprocessor.

Another object of the present invention is that in the inductive power supply, when the power supply coil and the power receiving coil inductively transmit power, the direction of current transmission is from the power supply module to the power receiving module, and the power receiving module is regarded as a load , and the current drawn by this load comes from the power supply coil, and the magnitude of the current will affect the amplitude change on the power supply coil. It is designed to set a control switch in the rectification and signal feedback circuit of the power receiving module, and use a very short time to cut off the rectification and signal feedback The operation of the circuit causes the power supply module to lose the load for a short time. When the power is transmitted during the power supply period, the amplitude on the power supply coil will cause idling due to the loss of the load effect, and the signal amplitude will be reduced. When the rectification and signal feedback circuit is turned on again , due to the interruption of power transmission in the previous period, the power of the rectification and signal feedback capacitor at the rear end has dropped. Large, using this effect, the power receiving module can feed back the signal to the power supply module to transmit data. During the feedback signal period, no excess power is lost, and the power receiving module only loses power supply for a short time, but no parts are needed. To withstand the impact of current, you can avoid damage to components.

To achieve the above object, the present invention discloses a device for controlling a synchronous rectification switch to transmit data in an inductive power supply, which includes a power supply module and a power receiving module, and the power supply module includes a power supply microprocessor with a built-in program, The power supply drive unit, signal analysis circuit, power supply coil voltage detection circuit, display unit, power supply unit and power supply resonant capacitor electrically connected with the power supply microprocessor, and the power supply resonant capacitor is electrically connected for power supply for transmitting electric energy and receiving data signals The coil is opposite to the power supply coil, and the power receiving module is provided with a power receiving coil for data signal transmission with the power supply coil;

The power-receiving module is a power-receiving microprocessor including a built-in program, and the power-receiving microprocessor is electrically connected to a voltage detection circuit, a rectification and signal feedback circuit, an open circuit protection circuit, a voltage stabilizing circuit, and a power-receiving DC step-down circuit. The rectifier and the power receiving coil, and the rectification and signal feedback circuit includes a first resistor electrically connected to the electrodes at both ends of the power receiving coil, a first MOSFET component, a first diode and a second resistor, a second MOSFET component, The second diode is electrically connected to the third resistor and the third MOSFET component electrically connected to the powered microprocessor by the first resistor and the first MOSFET component, and the second resistor and the second MOSFET component are electrically connected to the second diode. The fourth resistor and the fourth MOSFET assembly are electrically connected to the powered microprocessor.

The device for controlling a synchronous rectification switch to transmit data in the inductive power supply, wherein the first resistor, the second resistor, the first diode, and the second diode of the power receiving module are connected in parallel for rectification and signal feedback The capacitor is electrically connected to the power receiving resonant capacitor, the power receiving coil, and the voltage detection circuit.

The device for controlling a synchronous rectification switch to transmit data in the inductive power supply, wherein the third MOSFET component of the power receiving module is electrically connected to the second data signal pin and the fourth MOSFET of the power receiving microprocessor. The component is electrically connected to the first data signal pin of the powered microprocessor.

The device for controlling a synchronous rectification switch to transmit data in the inductive power supply, wherein the first MOSFET component and the second MOSFET component of the power receiving module are respectively N-channel MOSFET components used as rectifiers; the third The MOSFET component and the fourth MOSFET component are respectively N-channel MOSFET components used as switch components.

The device for controlling the synchronous rectification switch to transmit data in the inductive power supply, wherein the power supply microprocessor of the power supply module is electrically connected to the power supply drive unit, signal analysis circuit, power supply coil voltage detection circuit, display unit and The power supply unit is used to electrically connect the power supply resonant capacitor and the power supply coil with the power supply drive unit.

The device for controlling a synchronous rectification switch to transmit data in the inductive power supply, wherein the power supply drive unit includes a MOSFET driver electrically connected to the power supply microprocessor, and the MOSFET driver is electrically connected to the high-end MOSFET components, low The high-end MOSFET component is electrically connected to the power supply resonant capacitor and the power supply coil through the high-end MOSFET component and the low-side MOSFET component, and the high-end MOSFET component is electrically connected to the power supply unit.

In the device for controlling synchronous rectification switches to transmit data in the inductive power supply, the signal analysis circuit includes one or more power supply resistors, one or more power supply capacitors and rectifier diodes.

The device for controlling a synchronous rectification switch to transmit data in the inductive power supply, wherein one or more power supply resistors and one or more power supply capacitors of the signal analysis circuit are electrically connected in series or in parallel .

The device for controlling the synchronous rectification switch to transmit data in the inductive power supply, wherein the power supply coil voltage detection circuit includes a power supply coil voltage detection capacitor and a first power supply coil voltage detection resistor connected in parallel, and the parallel power supply coil The voltage detection capacitor and the first power supply coil voltage detection resistor are respectively electrically connected to the power supply microprocessor, the second power supply coil voltage detection resistor and the power supply coil voltage detection diode in series, and then use the series connection of the second resistor and the power supply coil voltage The detection diodes are respectively electrically connected to the power supply resonant capacitor and the signal analysis circuit.

The device for controlling a synchronous rectification switch to transmit data in the inductive power supply, wherein the power supply unit includes a power supply, a series-connected detection voltage dividing resistor and a power supply DC step-down device, and are electrically connected to the Power the microprocessor and power the drive unit.

In the device for controlling a synchronous rectification switch to transmit data in the inductive power supply, its power receiving module is operable to modulate the full-wave feedback signal or modulate the half-wave feedback signal.

The main technical effect of the present invention is to provide a device for controlling a synchronous rectification switch in an inductive power supply to transmit data, which includes a power supply module and a power receiving module, and the power supply module includes a power supply microprocessor with a built-in program, The power supply drive unit, signal analysis circuit, power supply coil voltage detection circuit, display unit, power supply unit and power supply resonant capacitor electrically connected with the power supply microprocessor, and the power supply resonant capacitor is electrically connected for power supply for transmitting electric energy and receiving data signals The coil is opposite to the power supply coil, and the power receiving module is provided with a power receiving coil for data signal transmission with the power supply coil;

The power-receiving module is a power-receiving microprocessor including a built-in program, and the power-receiving microprocessor is electrically connected to a voltage detection circuit, a rectification and signal feedback circuit, an open circuit protection circuit, a voltage stabilizing circuit, and a power-receiving DC step-down circuit. The rectifier and the power receiving coil, and the rectification and signal feedback circuit includes a first resistor electrically connected to the electrodes at both ends of the power receiving coil, a first MOSFET component, a first diode and a second resistor, a second MOSFET component, The second diode is electrically connected to the third resistor and the third MOSFET component electrically connected to the powered microprocessor by the first resistor and the first MOSFET component, and the second resistor and the second MOSFET component are electrically connected to the second diode. The fourth resistor and the fourth MOSFET assembly are electrically connected to the powered microprocessor.

The secondary beneficial effect of the present invention is that when power is supplied and transmitted between the power supply coil configured by the power supply module and the power receiving coil configured by the power receiving module, the rectification of the electrical connection between the power receiving module and the power receiving coil is controlled. The circuit switch operates, and the power receiving coil interrupts the power receiving function in a short period of time, which will cause the power supply coil of the power supply module to lose the load effect, so that the amplitude of the power supply carrier signal on the power supply coil changes, and then achieves data transmission by the power receiving module The signal is sent to the power supply module, and the data is transmitted from the power receiving module to the power supply module in the inductive power supply to complete the purpose of target identification and power setting in the power supply operation.

Another beneficial effect of the present invention is that the power receiving module is a power receiving microprocessor including a built-in program, and the power receiving microprocessor is electrically connected to the voltage detection circuit, rectification and signal feedback circuit, circuit breaker protection circuit, A voltage stabilizing circuit, a power-receiving DC step-down device, and a power-receiving coil, and a rectification and signal feedback circuit include a first resistor electrically connected to the positive and negative electrodes of the power-receiving coil, a first MOSFET component, and a first diode and the second resistor, the second MOSFET component, and the second diode, and then the first resistor and the first MOSFET component are electrically connected to the third resistor and the third MOSFET component that are electrically connected to the powered microprocessor, and The second resistor and the second MOSFET component are electrically connected to the fourth resistor and the fourth MOSFET component that are also electrically connected to the powered microprocessor.

Another beneficial effect of the present invention is that in the inductive power supply, when the power supply coil and the power receiving coil are inductively transmitting power, the direction of current transmission is from the power supply module to the power receiving module, and the power receiving module is regarded as a The load, and the current drawn by this load comes from the power supply coil, and the magnitude of the current will affect the amplitude change on the power supply coil. It is designed to set a control switch in the rectification and signal feedback circuit of the power receiving module, and use a very short time to cut off the rectification and signal The operation of the feedback circuit makes the power supply module lose the load for a short time. When the power is transmitted during the power supply period, the amplitude on the power supply coil will cause idling due to the loss of the load effect, and the signal amplitude will be reduced. When the rectification and signal feedback circuit is turned on again When the power transmission is interrupted in the previous period, the power of the rectification and signal feedback capacitor at the rear end drops. By using this effect, the power receiving module can feed back the signal to the power supply module to transmit data. During the feedback signal period, no excess power is lost, and the power receiving module only loses power supply in a short time, but there are no parts It needs to withstand the impact of current to avoid damage to components.

Description of drawings

Fig. 1 is a simple circuit diagram of the power supply module of the present invention;

Fig. 2 is a simple circuit diagram of the power receiving module of the present invention;

Fig. 3 is a simple circuit diagram of the first embodiment of the power receiving module of the present invention;

Fig. 4 is a simple circuit diagram of the second embodiment of the power receiving module of the present invention;

Fig. 5 is a simplified circuit diagram of the third embodiment of the power receiving module of the present invention;

Fig. 6 is a simplified circuit diagram of the fourth embodiment of the power receiving module of the present invention;

Fig. 7 is a simplified circuit diagram of the fifth embodiment of the power receiving module of the present invention;

Fig. 8 is a simplified circuit diagram of the sixth embodiment of the power receiving module of the present invention;

Fig. 9 is the waveform diagram of the modulated full-wave feedback signal of the present invention;

Fig. 10 is a waveform diagram of the analysis and processing of the modulation feedback signal in the present invention.

Description of reference signs: 1-power supply module; 11-power supply microprocessor; 16-power supply unit; 12-power supply drive unit; 161-power supply; 121-MOSFET driver; 122-high-end MOSFET component; ;13-signal analysis circuit; 162-voltage dividing resistor for first power supply voltage detection; 131-power supply resistor; 163-voltage dividing resistor for second power supply voltage detection; 132-power supply capacitor; 164-power supply DC voltage drop 133-rectifier diode; 17-power supply resonant capacitor; 14-power supply coil voltage detection circuit; 171-power supply coil; 141a-first power supply coil voltage detection resistor; 141-second power supply coil voltage detection resistor; 142-power supply coil voltage Detection capacitor; 143-power supply coil voltage detection diode; 15-display unit; 2-power receiving module; 21-power receiving microprocessor; 237-fourth resistor; 211-first data signal pin; 238-fourth MOSFET Components; 212-second data signal pin; 239-rectification and signal feedback capacitor; 22-voltage detection circuit; 24-open circuit protection circuit; 221-voltage dividing resistor for receiving voltage detection; 241-open circuit protection resistor; 222-detection terminal; 242-P type MOSFET component; 23-rectification and signal feedback circuit; 243-N type MOSFET component; 231-first resistor; 25-stabilizing circuit; 2311-first diode; 251- Capacitor for buffering; 232-the first MOSFET component; 252-the first DC step-down device for receiving power; 233-the second resistor; 253-the output terminal for receiving power; 331-the second diode; 26-the second receiving DC voltage 234-the second MOSFET component; 27-the receiving resonant capacitor; 235-the third resistor; 271-the receiving coil; 236-the third MOSFET component.

Detailed ways

In order to achieve the above purpose and effect, the above and other technical means, structural features, functions and implementation methods of the present invention will be described in more detail below in conjunction with the accompanying drawings and preferred embodiments of the present invention.

Please refer to Figures 1 and 2, which are simple circuit diagrams of the power supply module and the simple circuit diagram of the power receiving module of the present invention. It can be clearly seen from the figures that the inductive power supply of the present invention includes a power supply module 1, a power receiving module Module 2, where:

The power supply module 1 has a power supply microprocessor 11, and related software programs such as operating procedures, control programs, signal analysis software with anti-noise function, etc. are built in the power supply microprocessor 11, and the power supply microprocessor 11 is electrically connected to Power supply driving unit 12, signal analysis circuit 13, power supply coil voltage detection circuit 14, display unit 15, power supply unit 16, and power supply driving unit 12 is provided with MOSFET driver 121, and MOSFET driver 121 is respectively connected to power supply microprocessor 11, high-end The MOSFET component 122 and the low-end MOSFET component 123 are connected to the power supply resonant capacitor 17 through the high-end MOSFET component 122 and the low-side MOSFET component 123, and then electrically connected to the power supply unit 16 through the high-end MOSFET component 122; A power supply resistor (the first power supply resistor, the second power supply resistor...) 131 in series and parallel connection, a power supply capacitor (the first power supply capacitor, the second power supply capacitor...) 132 and a rectifier diode 133 connected in series to pass the rectifier diode 133 Electrically connected to the power supply resonant capacitor 17; and the power supply unit 16 is respectively connected with a power supply 161, two power supply voltage detection voltage dividing resistors in series, the first power supply voltage detection voltage dividing resistor 162, the second power supply voltage detection A voltage dividing resistor 163 and a power supply DC step-down device 164 are used, and the power supply unit 16 is electrically connected to the power supply drive unit 12; and the power supply resonant capacitor 17 is electrically connected to a power supply coil 171 that can transmit electric energy and receive data signals; the power supply The coil voltage detection circuit 14 includes a power supply coil voltage detection capacitor 142 and a first power supply coil voltage detection resistor 141a connected in parallel, and the parallel power supply coil voltage detection capacitor 142 and the first power supply coil voltage detection resistor 141a are respectively electrically connected to the power supply The microprocessor 11, the second power supply coil voltage detection resistor 141 and the power supply coil voltage detection diode 143 in series are electrically connected to the power supply resonance Capacitor 17 and signal analyzing circuit 13 .

The power receiving module 2 is provided with a power receiving microprocessor 21, and the power receiving microprocessor 21 is provided with relevant software programs such as an operation program and a control program, and the power receiving microprocessor 21 is electrically connected to the voltage detection circuit 22, Rectification and signal feedback circuit 23, circuit breaker protection circuit 24, voltage stabilizing circuit 25, the second receiving DC step-down device 26; A voltage-dividing resistor for receiving voltage detection, a second voltage-dividing resistor for receiving voltage detection, ...) 221, and electrically connected to the power-receiving microprocessor 21, and utilizes a series-type power-receiving voltage detection The voltage dividing resistor 221 is connected in series with the detection terminal 222, the rectification and signal feedback circuit 23, the circuit breaker protection circuit 24, and the second DC step-down device 26; and the rectification and signal feedback circuit 23 includes a first resistor 231, a first MOSFET The component 232, the first diode 2311 and the second resistor 233, the second MOSFET component 234, the second diode 2331, and the first diode 2311 and the second diode 2331 are connected in parallel to the voltage detection circuit 22 , and then the first resistor 231 and the first MOSFET component 232 are electrically connected to the third resistor 235 and the third MOSFET component 236, and the third MOSFET component 236 is electrically connected to the second data signal lead of the powered microprocessor 21 Pin 212, and use the second resistor 233, the second MOSFET assembly 234 to electrically connect the fourth resistor 237, the fourth MOSFET assembly 238, the fourth MOSFET assembly 238, and then electrically connect to the first data of the powered microprocessor 21 The signal pin 211, the first diode 2311, the second diode 2331 are connected in parallel for rectification and the signal feedback capacitor 239, respectively using the first resistor 231, the second resistor 233, the first diode 2311, and the second diode 2331 is electrically connected to the power receiving resonant capacitor 27, the power receiving coil 271, and the voltage detection circuit 22; and the circuit breaker protection circuit 24 is connected in series with the circuit breaker protection resistor 241, the P-type MOSFET component 242 and the N-type MOSFET component 243, and the N-type MOSFET component 242 is used. The MOSFET assembly 243 is electrically connected to the power receiving microprocessor 21, and the P-type MOSFET assembly 242 is electrically connected to the buffer capacitor 251 of the voltage stabilizing circuit 25 and the first power receiving DC step-down device 252, then the first power receiving DC step-down device 252 is used. A power-receiving DC step-down device 252 is electrically connected to the power-receiving output terminal 253; and the voltage detection circuit 22, the circuit breaker protection circuit 24, the voltage stabilizing circuit 25 and the second power-receiving DC step-down device 26 are electrically connected to the receiving Electric microprocessor 21, and use voltage detection circuit 22, circuit breaker protection circuit 24 and second DC step-down device 26 to receive power, respectively electrically connected to rectification and signal feedback circuit 23, then rectification and signal feedback circuit 23 The first diode 2311 and the second diode 2331 are electrically connected to the power receiving resonant capacitor 27, that is, the power receiving resonant capacitor 27 is electrically connected to the power receiving coil 271; the first MOSFET component 232, The second MOSFET assembly 234 is an N-channel MOSFET assembly used as a rectifier; the third MOSFET assembly 236 and the fourth MOSFET assembly 238 are respectively an N-channel MOSFET assembly used as a switch assembly; the power receiving module 2 is operable It can be used to modulate the full-wave feedback signal or modulate the half-wave feedback signal.

The above-mentioned inductive power supply of the present invention uses the power supply coil 171 of the power supply module 1 and the power receiving coil 281 of the power receiving module 2. During the transmission of electric energy, the power receiving module 2 can also feed back signals to the power supply module 1 for transmission. Data, regardless of the power of the transmitted power, will not affect the stable transmission of data signals; during the induction transmission of power between the power supply coil 171 and the power receiving coil 281, the direction of current transmission is from the power supply module 1 to the power receiving module 2 , the power receiving module 2 is regarded as a load, and the current drawn by this load comes from the power supply coil 171, and the magnitude of the current will affect the amplitude change on the power supply coil 171, which is designed in the rectification and signal feedback circuit 23 of the power receiving module 2 The control switch is set, and the first data signal pin 211 and the second data signal pin 212 of the powered microprocessor 21 are used to control the third MOSFET component 236 and the fourth MOSFET component 238 to perform rectification and signal feedback circuit 23 The switching function of the power supply module 1 is cut off and rectified and the signal feedback circuit 23 is operated in a very short time, so that the power supply module 1 loses the load for a short time, and when the power is transmitted during the power supply period, the amplitude on the power supply coil 171 will cause idling due to the loss of the load effect , the signal amplitude is reduced. When the rectification and signal feedback circuit 23 is turned on again, the power of the rectification and signal feedback capacitor 239 at the rear end is reduced due to the interruption of power transmission in the previous period. After the rectification and signal feedback circuit 23 is turned on, the rectification And the signal feedback capacitor 239 draws more current due to the charging effect, which increases the amplitude of the power supply coil 171. Using this effect, the signal can be fed back from the power receiving module 2 to the power supply module 1 for data transmission. During the feedback signal period There is no excess power loss, and the power receiving module 2 only loses power supply for a short period of time, but no parts need to withstand the current impact, which can avoid damage to components.

Please refer to Figures 1, 2, 3, and 4, which are the simple circuit diagram of the power supply module, the simple circuit diagram of the power receiving module, the simple circuit diagram of the first embodiment of the power receiving module, and the simple circuit diagram of the second embodiment of the power receiving module of the present invention. , wherein the power receiving module 2 of the present invention adopts a half-bridge synchronous rectification method, using two diodes of the first diode 2311 and the second diode 2331 to match the two N-channels of the first MOSFET assembly 232 and the second MOSFET assembly 234 One-channel MOSFET for rectification work, and two N-channel MOSFET components at the low end can reduce the conduction loss and do not require additional integrated circuits for control, and only one current needs to pass through the first diode in each rectification cycle 2311, the second diode 2331, the loss of the forward voltage difference of the two diodes, and the current passing through the first MOSFET assembly 232, the second MOSFET assembly 234, the extremely low on-resistance loss of the two N-channel MOSFET assemblies, and the traditional four Compared with diode rectification, the rectification energy loss is reduced by about half; and in the rectification and signal feedback circuit 23, two N-channel third MOSFET assemblies 236 and fourth MOSFET assemblies 238 are added as switches for controlling the operation of the rectification circuit. The operation of the synchronous rectification in the control rectification and signal feedback circuit 23, when the power receiving module 2 operates in the normal power receiving mode, the switches of the third MOSFET component 236 and the fourth MOSFET component 238 of the two N-channels are all in the The open state does not affect the synchronous rectification operation of the rectification and signal feedback circuit 23 .

Please refer to Figures 1, 2, 3, and 4, which are the simple circuit diagram of the power supply module, the simple circuit diagram of the power receiving module, the simple circuit diagram of the first embodiment of the power receiving module, and the simple circuit diagram of the second embodiment of the power receiving module of the present invention. , wherein the power receiving microprocessor 21 of the power receiving module 2 of the present invention sets the first data signal pin 211 and the second data signal pin 212 to maintain a low potential state, so that the third MOSFET assembly 236 and the fourth MOSFET assembly 238 are kept in an open state. When the power receiving coil 271 receives the electric energy transmitted by the power supply coil 171 of the power supply module 1, when the positive current enters from the power receiving coil 271 during the positive half cycle, it is then subjected to the electric resonant capacitor 27 (please also refer to Fig. 3), the positive current loop passes through the first diode 2311, the voltage detection circuit 22, the circuit breaker protection circuit 24 to the power receiving output terminal 253 of the voltage stabilizing circuit 25 in sequence, and the power receiving coil 271 will be turned on during the positive half cycle. A high potential is generated and connected to the gate G pin of the first MOSFET component 232 through the first resistor 231 to conduct it, so that the ground current is derived from the ground terminal of the first MOSFET component 232 and then flows to the power receiving coil 271 to form a complete power supply circuit .

Moreover, after the power receiving coil 271 receives the electric energy transmitted by the power supply coil 171 of the power supply module 1, when the positive current enters from the power receiving coil 271 during the negative half cycle (please refer to FIG. 4 at the same time), the positive current loop passes through the second The diode 2331, the voltage detection circuit 22, the circuit breaker protection circuit 24 are connected to the receiving output terminal 253 of the voltage stabilizing circuit 25, and the receiving coil 271 will generate a high potential during the negative half cycle through the second resistor 233, which is connected to the second The gate G pin of the MOSFET component 234 turns it on, so that the ground current is derived from the ground terminal of the second MOSFET component 234 , and then flows to the power receiving coil 271 through the power receiving resonant capacitor 27 to form a complete power supply circuit. 3 and 4 above illustrate the power supply operation mode of the rectification and signal feedback circuit 23 in the non-modulation feedback state during the inductive power supply.

Please refer to Figures 1, 2, 5, and 6, which are the simplified circuit diagram of the power supply module, the simplified circuit diagram of the power receiving module, the simplified circuit diagram of the third embodiment of the power receiving module, and the simplified circuit diagram of the fourth embodiment of the power receiving module of the present invention. , wherein the rectification and signal feedback circuit 23 of the power receiving module 2, during the operation of modulating the half-wave feedback signal, the power receiving microprocessor 21 will set the output of the first data signal 211 to a high potential (usually the power receiving micro The operating voltage of the processor 21 is 5V (volts)) and after the high potential is input to the gate G pin of the fourth N-channel MOSFET assembly 238, the switch of the fourth MOSFET assembly 238 is turned on, even if the second MOSFET assembly for synchronous rectification The gate G pin of the MOSFET component 234 is kept at a low potential; the second data signal 212 is kept at a low potential state, and after being input to the gate G pin of the N-channel third MOSFET component 236, the third MOSFET component 236 is kept in an open state. . After the power receiving coil 271 receives the electric energy transmitted by the power supply coil 171 of the power supply module 1, the positive current enters from the power receiving coil 271 during the positive half cycle, and then undergoes the electric resonance capacitor 27 (please also refer to FIG. 5 ), the positive current The loop passes through the first diode 2311, the voltage detection circuit 22, the circuit breaker protection circuit 24 to the power receiving output terminal 253 of the voltage stabilizing circuit 25 in sequence, and the power receiving coil 271 will generate a high potential during the positive half cycle through the first resistor 231 . Connect to the gate G pin of the first MOSFET component 232 to turn it on, so that the ground current is derived from the ground terminal of the first MOSFET component 232 and then flows to the power receiving coil 271 to form a complete power supply circuit.

Moreover, after the power receiving coil 271 receives the electric energy transmitted by the power supply coil 171 of the power supply module 1, a positive current enters from the power receiving coil 271 during the negative half cycle (please also refer to FIG. 6 ), and the power receiving coil 271 During this period, a high potential will be generated and connected to the gate G pin of the second MOSFET component 234 via the second resistor 233, but because the switch of the fourth MOSFET component 238 is turned on in this control state, this terminal will maintain a low potential state , so that the second MOSFET component 234 is in an open state, and cannot conduct the ground current to form a loop, so it cannot supply power to the power receiving output terminal 253 during this rectification cycle. At this time, the power receiving module 2 only draws half of the normal power supply energy. The above FIGS. 5 and 6 illustrate the power supply operation mode of the rectification and signal feedback circuit 23 during the operation of modulating the half-wave feedback signal during the inductive power supply period.

Please refer to Figures 1, 2, 7, and 8, which are the simplified circuit diagram of the power supply module, the simplified circuit diagram of the power receiving module, the simplified circuit diagram of the fifth embodiment of the power receiving module, and the simplified circuit diagram of the sixth embodiment of the power receiving module of the present invention. , wherein the power receiving microprocessor 21 of the power receiving module 2 of the present invention, during the operation of modulating the full-wave feedback signal, sets the first data signal pin 211 and the second data signal pin 212 to maintain a high potential state ( Usually, the operating voltage 5V (volts) of the powered microprocessor 21 is output to the third MOSFET component 236 and the fourth MOSFET component 238 respectively, so that the switches of these two components are kept in a conducting state, and then the first MOSFET assembly 232, second MOSFET assembly 234, the gate G feet of the two N-channel MOSFETs keep low potential, when the power receiving coil 271 receives the electric energy transmitted by the power supply coil 171 of the power supply module 1, when the positive half cycle and the negative half cycle During this period, the power supply loop cannot be formed even if the positive current enters through the power receiving coil 271 . At this time, the power receiving coil 271 of the power receiving module 2 is in the no-load condition of the power supply coil 171 and does not draw energy. The above FIGS. 7 and 8 illustrate the power supply operation mode of the rectification and signal feedback circuit 23 during the operation of modulating the full-wave feedback signal during the inductive power supply period.

Please refer to Figures 1, 2, 9, and 10, which are the simple circuit diagram of the power supply module of the present invention, the simple circuit diagram of the power receiving module, the modulated full-wave feedback signal waveform diagram, and the modulated feedback signal analysis and processing waveform diagram, as shown in the figure It can be clearly seen that when the synchronous rectification circuit composed of the first MOSFET component 232 and the second MOSFET component 234 in the rectification and signal feedback circuit 23 of the power receiving module 2, the first data signal pin 211 and the second data signal pin 211 When the signal pins 212 are both kept at a high potential state, the gate G pins of the two N-channel MOSFETs of the first MOSFET component 232 and the second MOSFET component 234 are kept at a low potential, so that the circuit appears to be disconnected (please also refer to the fourth and seventh , as shown in Figure 8), the amplitude on the power supply coil 171 of the power supply module 1 will drop slightly, and after the synchronous rectifiers of the first MOSFET component 232 and the second MOSFET component 234 are turned on, due to the previous period of interruption The power transmission reduces the power of the rectification and signal feedback capacitor 239 at the rear end. After the rectification and signal feedback circuit 23 is turned on, the rectification and signal feedback capacitor 239 draws more current due to the charging effect and increases the amplitude of the power supply coil 171. Utilizing this effect, the data signal can be fed back to the power supply coil 171 by the power receiving coil 271, and in the modulation operation of the feedback data by the power receiving coil 271, energy loss will not be caused, and the power supply coil 171 and the power receiving coil can be improved. 271 power conversion efficiency, while the rectification and signal feedback circuit 23 modulates the feedback signal, the amplitude on the power supply coil 171 is first reduced and then enlarged, so that the data signal fed back by the power receiving coil 271 can be fed back to the power supply coil 171 , can make the power supply microprocessor 11 easier to identify, the data code transmission of the data signal fed back by the power receiving coil 271 is also more stable, and the effect of improving the power transmission efficiency is achieved. It is illustrated in Fig. 10 that after the signal on the power supply coil 171 is processed by the signal analysis circuit 13, a clear amplitude change is produced, and this signal enters the power supply microprocessor 11 again, and can be completed by processing the signal analysis software with anti-noise function Function to receive data signal.

Therefore, the above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. The device for controlling the synchronous rectification switch to transmit data in the inductive power supply of the present invention is powered by the power supply module 1 The microprocessor 11 supplies power to the power receiving coil 281 of the power receiving module 2 through the power supply coil 171, and the rectification and signal feedback circuit 23 of the power receiving module 2, through the switches of the third MOSFET component 236 and the fourth MOSFET component 238 Disconnect the rectification and signal feedback circuit 23 in a short time to change the load characteristics of the power receiving coil 271, so that the power receiving coil 271 feeds back the data signal to the power supply coil 171 of the power supply module 1, and makes the power supply microprocessor 11 easy to identify The data code of the data signal, when the power supply module 1 can transmit power between the power supply coil 171 and the power receiving coil 271 of the power receiving module 2, the rectification and signal feedback circuit 23 is used to disconnect the current for a short time, and the data can be transmitted simultaneously. The purpose of stable signal transmission and reducing the loss of data signal transmission is not to increase the power loss between the power supply module 1 and the power receiving module 2 during the modulation feedback signal period, and can increase the maximum transmission power of the inductive power supply. Therefore, all processes, implementation methods, etc. that can achieve the aforementioned effects, as well as related equipment and devices, should be covered by the present invention. Such simple modifications and equivalent structural changes should be included in the patent scope of the present invention. , together with Chen Ming.

The above-mentioned device for controlling the synchronous rectification switch to transmit data in the inductive power supply of the present invention can have the following advantages when actually implementing manufacturing operations, such as:

(1) The power supply coil 171 of the power supply module 1 and the power receiving coil 271 of the power receiving module 2 use the rectification and signal feedback circuit 23 of the power receiving module 2 to cut off the current in a short time and change the power receiving coil 271 load characteristics, so that the power receiving module 271 feeds back the data signal to the power supply coil 171, and it is easy to identify the transmitted data code, so as to achieve the purpose of stably transmitting the data signal and improving the efficiency of power transmission.

(2) When the power receiving coil 271 of the power receiving module 2 modulates the feedback signal to the power supply coil 171 , it will not increase the loss of power transmitted by the power supply coil 171 , and can improve the efficiency of power conversion.

Therefore, the present invention is mainly aimed at the device design for controlling the synchronous rectification switch to transmit data in the inductive power supply, and transmits electric energy between the power supply coil and the power receiving coil of the power supply module through the synchronous rectification and signal feedback circuit of the power receiving module When using the synchronous rectification and signal feedback circuit to disconnect the operation in a short time, change the amplitude of the power supply coil, so that the power receiving coil feeds back the data signal to the power supply coil, so as to achieve the power transmission from the power supply module to the power receiving module. Stabilizing the feedback data signal is the main protection point, and improving the efficiency of power conversion, and making the data code of the feedback transmission data signal easy to identify, improving the efficiency of power transmission, but the above is only a preferred embodiment of the present invention Rather, it is illustrative rather than restrictive to the present invention. Those of ordinary skill in the art understand that many modifications and changes can be made without departing from the spirit and scope defined by the following appended claims. Or equivalent, but all will fall within the protection scope of the present invention.

To sum up, in the actual implementation and application of the device for controlling the synchronous rectification switch to transmit data in the above-mentioned inductive power supply of the present invention, in order to achieve its efficacy and purpose, the present invention is a research and development with excellent practicability. , in order to meet the requirements of the invention patent application, so the application is filed according to the law. I hope that the review committee will approve the case as soon as possible to protect the inventor's hard work. , I really feel that virtue is convenient.

Claims (11)

1. A device for controlling a synchronous rectification switch to transmit data in an inductive power supply, characterized in that: it includes a power supply module and a power receiving module, and the power supply module includes a power supply microprocessor with a built-in program, and a power supply microprocessor The power supply drive unit, signal analysis circuit, power supply coil voltage detection circuit, display unit, power supply unit, and power supply resonant capacitor electrically connected to the device, and the power supply resonant capacitor is electrically connected to the power supply coil for transmitting electric energy and receiving data signals. The power supply coil is provided with a power receiving coil for data signal transmission with the power supply coil in the power receiving module; The power-receiving module is a power-receiving microprocessor including a built-in program, and the power-receiving microprocessor is electrically connected to a voltage detection circuit, a rectification and signal feedback circuit, an open circuit protection circuit, a voltage stabilizing circuit, and a power-receiving DC step-down circuit. The rectifier and the power receiving coil, and the rectification and signal feedback circuit includes a first resistor electrically connected to the electrodes at both ends of the power receiving coil, a first MOSFET component, a first diode and a second resistor, a second MOSFET component, The second diode is electrically connected to the third resistor and the third MOSFET component electrically connected to the powered microprocessor by the first resistor and the first MOSFET component, and the second resistor and the second MOSFET component are electrically connected to the second diode. The fourth resistor and the fourth MOSFET assembly are electrically connected to the powered microprocessor. 2. The device for controlling a synchronous rectification switch to transmit data in an inductive power supply according to claim 1, wherein the first resistor, the second resistor, the first diode, and the second resistor of the power receiving module The diode is connected in parallel with the rectifier and the signal feedback capacitor, and then electrically connected to the power receiving resonant capacitor, the power receiving coil, and the voltage detection circuit. 3. The device for controlling a synchronous rectification switch to transmit data in an inductive power supply according to claim 1, wherein the third MOSFET component of the power receiving module is electrically connected to the second MOSFET component of the power receiving microprocessor. The data signal pin and the fourth MOSFET component are electrically connected to the first data signal pin of the powered microprocessor. 4. The device for controlling a synchronous rectification switch to transmit data in an inductive power supply according to claim 1, wherein the first MOSFET component and the second MOSFET component of the power receiving module are respectively used as rectifiers N-channel MOSFET components; the third MOSFET component and the fourth MOSFET component are respectively N-channel MOSFET components used as switch components. 5. The device for controlling a synchronous rectification switch to transmit data in an inductive power supply as claimed in claim 1, wherein the power supply microprocessor of the power supply module is electrically connected to the power supply drive unit, the signal analysis circuit, and the power supply unit respectively. The coil voltage detection circuit, the display unit and the power supply unit are electrically connected to the power supply resonant capacitor and the power supply coil by the power supply driving unit. 6. The device for controlling a synchronous rectification switch to transmit data in an inductive power supply as claimed in claim 5, wherein the power supply driving unit includes a MOSFET driver electrically connected to a power supply microprocessor, and the MOSFET driver and The high-end MOSFET component and the low-end MOSFET component are electrically connected, and then the power supply resonant capacitor and the power supply coil are electrically connected through the high-end MOSFET component and the low-end MOSFET component, and the high-end MOSFET component is electrically connected to the power supply unit. 7. The device for controlling a synchronous rectification switch to transmit data in an inductive power supply as claimed in claim 5, wherein the signal analysis circuit includes one or more power supply resistors, one or more power supply capacitors and rectifier diode. 8. The device for controlling a synchronous rectification switch to transmit data in an inductive power supply as claimed in claim 7, wherein one or more power supply resistors and one or more power supply capacitors of the signal analysis circuit, Electrically connected in series or in parallel. 9. The device for controlling a synchronous rectification switch to transmit data in an inductive power supply as claimed in claim 5, wherein the power supply coil voltage detection circuit includes a power supply coil voltage detection capacitor connected in parallel with the first power supply coil voltage The detection resistor, and the parallel connection of the power supply coil voltage detection capacitor and the first power supply coil voltage detection resistor are respectively electrically connected to the power supply microprocessor, the second power supply coil voltage detection resistor and the power supply coil voltage detection diode in series, and then used in series The second resistor and the power supply coil voltage detection diode are electrically connected to the power supply resonant capacitor and the signal analysis circuit respectively. 10. The device for controlling a synchronous rectification switch to transmit data in an inductive power supply as claimed in claim 5, wherein the power supply unit includes a power supply, a voltage dividing resistor for detection in series and a DC step-down voltage for power supply and are electrically connected to the power supply microprocessor and the power supply driving unit respectively. 11. The device for controlling a synchronous rectification switch to transmit data in an inductive power supply as claimed in claim 1, wherein the power receiving module is operable to modulate a full-wave feedback signal or a half-wave feedback signal.

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