CN102957181B - Vehicle Inductive Charging Method - Google Patents

Abstract

The invention relates to a vehicle induction charging method, which comprises a power supply device and a powered device, wherein the power supply device detects whether the powered device enters an induction range through a first variable frequency power supply module corresponding to a first powered module of the powered device, a power supply microprocessor compares whether the identification code from the powered device grants power supply, checks whether the data code of the powered state is a normal power supply state, marks the system state of the powered device as an error state by using the power supply microprocessor, closes power output by transmitting the state to other first variable frequency power supply modules through a signal control circuit, checks the received power and adjusts the output power through the data code of the power state of the powered device, improves the total voltage for charging the vehicle by using series connection of the powered modules, and performs operations such as identity identification, value storage or value reduction and the like by using a data transmission mode, thereby achieving the purposes of reducing cost, facilitating use, preventing electric leakage and preventing electric burglary.

Description

Vehicle Inductive Charging Method

technical field

The present invention provides a vehicle inductive charging method, in particular, the frequency conversion power supply module in the power supply device is connected to the signal control circuit and the power supply source, and the power receiving device connects the voltage dividing circuit and the power receiving output terminal with the power receiving module in series inside. Let the vehicle carry out charging, identification, voltage comparison, power adjustment and data transmission in an inductive way, so as to achieve the effects of convenient use, anti-leakage and anti-theft.

Background technique

Generally, most electric vehicles are equipped with batteries inside the vehicle. When the battery power is exhausted or not enough for use, the vehicle needs to be charged. However, since the charging method is to use a power cord and a plug to electrically connect the vehicle, when setting up a charging station When charging, not only is it easy for the power to leak out due to rainwater wetting the plug, resulting in electric shock or loss of power consumption, but it is also easy for criminals to use the plug to steal electricity. Therefore, with the development of inductive charging technology, the inductive transmission of power The operation mode of the system is to input DC power to the power supply end to drive the coil, transmit energy to the coil at the power receiving end through AC electromagnetic wave induction, and after rectification, filtering, and voltage stabilization procedures, output a DC power supply to the electromechanical system at the output end of the power receiving end. Therefore, some manufacturers want to apply inductive charging technology to electric vehicle charging.

However, because electromechanical equipment requires a high-voltage DC power supply to operate, the output voltage of the receiving end of the inductive charging technology has not been able to increase. There are two reasons for this:

(1) Because the voltage output by the receiving end is obtained by rectifying, filtering, and stabilizing the voltage on the receiving coil, these procedures will reduce the processed voltage, so the voltage on the receiving end If the demand for output voltage increases, the voltage obtained by the power receiving coil at the front end needs to be increased to a very large level, and the rectification element at the rear end must also be a high withstand voltage voltage element, because the high voltage withstand element is very expensive and difficult to produce, resulting in the actual It is very difficult and expensive to operate.

(2) The coil at the power receiving end needs to obtain high voltage, which means that the power supply end also needs to drive high voltage to the power supply coil to transmit power, and in this case, the driving element at the power supply end also needs to be a high voltage driving element, because the drive High-voltage components are expensive and difficult to produce, making implementation difficult and costly.

Therefore, how to solve the high cost and difficult problems and shortcomings caused by the increase of the output voltage of the receiving end of the existing inductive charging technology is the direction that relevant manufacturers engaged in this industry are eager to study and improve.

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 trial and modification, he designed this low-cost, convenient The invention patent of the vehicle inductive charging method that uses, prevents leakage and prevents electricity theft was born.

Contents of the invention

The main purpose of the present invention is to provide a vehicle inductive charging method, the power supply device wirelessly transmits the power through the frequency conversion power supply module, and receives the power in series with the power receiving module of the power receiving device, so that the total voltage can be increased to charge the vehicle charging, and use the circuit shunt and voltage divider circuit voltage division method, so that the power receiving microprocessor can receive the divided output total voltage for comparison, so there is no need to use high-voltage specification parts, because there is no need to connect the power line The water will not enter the socket, and the data transmission method can be used for identification, value storage or depreciation, etc., which can reduce costs, facilitate use, prevent leakage and prevent electricity theft.

The secondary purpose of the present invention is to provide a vehicle inductive charging method. The power supply microprocessors of each first variable frequency power supply module in the variable frequency power supply module perform variable frequency power adjustment mode through the coil voltage detection circuit, so that the output power is adjusted to be the same as The preset power value is used to prevent the voltage from being too low or too high, so that the power receiving module of the power receiving device cannot be charged or is dangerously missing after receiving power, so as to achieve the purpose of stable and smooth charging.

Another object of the present invention is to provide a vehicle inductive charging method. After the power receiving modules of the power receiving device receive power and are connected in series, the power receiving microprocessor of the first power receiving module is used for comparison through a voltage divider circuit. , if the total voltage after the voltage division is not equal to the predetermined multiple voltage, the first power receiving module will transmit the power supply status error data code, which is received by the corresponding first variable frequency power supply module, and then transmitted to the signal control circuit, the signal control The circuit will send a signal to the other first variable frequency power supply modules to stop the power supply, so that charging can be stopped immediately when the voltage is unstable, too high or too low, thereby achieving the purpose of protecting the system.

Description of drawings

Fig. 1 is a circuit block diagram of the present invention;

Fig. 2 is a circuit block diagram of the first frequency conversion power supply module of the present invention;

3 is a circuit block diagram of the first and third power receiving modules of the present invention;

4 is a circuit block diagram of a second power receiving module of the present invention;

Fig. 5 is the operation flowchart (1) of the power supply device of the present invention;

Fig. 6 is the operation flowchart (2) of the power supply device of the present invention;

FIG. 7 is a flowchart of the operation of the power receiving device of the present invention;

Fig. 8 is a perspective view of a preferred embodiment of the present invention.

Description of reference signs: 1-power supply device; 11-frequency conversion power supply module; 1101-first frequency conversion power supply module; 111-power supply microprocessor; 112-power supply drive unit; 1121-MOSFET driver; 1122-high-end MOSFET components; Low-end MOSFET components; 113-signal analysis circuit; 114-coil voltage detection circuit; 115-power supply unit; 116-resonant circuit; 1161-power supply coil; 12-signal control circuit; 13-power supply; 2-power receiving device; 21-power receiving module; 2101-first power receiving module; 2102-second power receiving module; 2103-third power receiving module; 211-power receiving microprocessor; 212-voltage detection circuit; 213-rectification filter circuit ; 214-AM carrier modulation circuit; 215-circuit protection circuit; 216-stabilizing circuit; 217-DC step-down device; 218-resonant circuit; .

Detailed ways

In order to achieve the above-mentioned purpose and effect, the technical means and structure adopted by the present invention are now illustrated in detail with respect to preferred embodiments of the present invention. The features and functions are as follows, so as to facilitate a complete understanding.

Please refer to Fig. 1 to Fig. 4 for the circuit block diagram of the present invention, the circuit block diagram of the first variable frequency power supply module, the circuit block diagram of the first and the third power receiving module and the circuit block diagram of the second power receiving module, from the figure It can be clearly seen from the illustration that the vehicle inductive charging method includes a power supply device 1 and a power receiving device 2; wherein:

The power supply device 1 is provided with two or more first variable frequency power supply modules 1101 connected in parallel in the variable frequency power supply module 11, and each first variable frequency power supply module 1101 has a power supply microprocessor 111 respectively. 111 is provided with relevant software programs such as operation program, control program, and data code analysis software, and each power supply microprocessor 111 is electrically connected to the power supply driving unit 112, the signal analysis circuit 113, the coil voltage detection circuit 114, and the power supply unit 115. , and the power supply driving unit 112 is provided with a MOSFET driver 1121, and the MOSFET driver 1121 is respectively connected to the power supply microprocessor 111, the high-side MOSFET element 1122, and the low-end MOSFET element 1123, so as to pass the high-end MOSFET element 1122, the low-end MOSFET element 1123 They are respectively connected to the resonant circuit 116, and then electrically connected to the power supply unit 115 through the high-end MOSFET element 1122; as for the signal analysis circuit 113 and the coil voltage detection circuit 114, they are electrically connected to the resonant circuit 116; 1. The power supply coil 1161 for transmitting data signals. Each first variable frequency power supply module 1101 is respectively connected in series with the signal control circuit 12 and the power supply 13. The signal control circuit 12 is a power supply microprocessor electrically connected to each first variable frequency power supply module 1101. 111 , and the power supply unit 115 and the power supply driving unit 112 of each first variable frequency power supply module 1101 are connected to the power supply source 13 in parallel.

In the power receiving device 2, a first power receiving module 2101 corresponding to the first frequency conversion power supply module 1101, a second power receiving module 2102, and one or more series connected to the first power receiving module 21 are arranged in series in the power receiving module 21. The third power receiving module 2103 between 2101 and the second power receiving module 2102, the first power receiving module 2101, the second power receiving module 2102 and each third power receiving module 2103 are respectively equipped with a power receiving microprocessor 211 The power receiving microprocessor 211 is provided with related software programs such as operating procedures and control programs. The power receiving microprocessor 211 is respectively connected to the voltage detection circuit 212, the AM carrier modulation circuit 214, the circuit breaker protection circuit 215, and the voltage stabilizing circuit 216. , DC step-down device 217; and voltage detection circuit 212, DC step-down device 217 are connected in parallel to rectification filter circuit 213, rectification filter circuit 213, open circuit protection circuit 215, voltage stabilizing circuit 216 are connected in series with resonant circuit 218 and receiving coil 2181, and the power-receiving microprocessor 211 and the AM carrier modulation circuit 214 are connected in series with the resonant circuit 218; and the circuit breaker protection circuit 215 is a series resistor, a P-type MOSFET element and an N-type MOSFET element, and the N-type MOSFET element is used to electrically connect In the power receiving microprocessor 211, the P-type MOSFET element is also electrically connected to the voltage stabilizing circuit 216; and the voltage detection circuit 212, the circuit breaker protection circuit 215 and the DC step-down circuit 217 are respectively electrically connected to the rectification filter circuit 213 , and then the rectification and filtering circuit 213, the amplitude modulation carrier modulation circuit 214 are electrically connected to the resonant circuit 218, that is, the resonant circuit 218 is electrically connected to the power receiving coil 2181, the first power receiving module 2101, the second power receiving module 2102 and the first power receiving module 2102. The three power receiving modules 2103 are connected in series with the voltage stabilizing circuit 216, and the second power receiving module 2102 is electrically connected to the power receiving output terminal 23 with the voltage stabilizing circuit 216, and the voltage stabilizing circuit 216 is divided and connected in series with the voltage dividing circuit 22. Then it is electrically connected to the power receiving microprocessor 211 of the first power receiving module 2101 .

The variable frequency power supply module 11 of the above-mentioned power supply device 1 can be provided with two, three, four, seven or twenty first variable frequency power supply modules 1101, and the variable frequency power supply module 11 has two first variable frequency power supply modules 1101. When the power supply module 1101 is used, the power receiving module 21 of the power receiving device 2 is provided with a first power receiving module 2101 and a second power receiving module 2102; when the frequency conversion power supply module 11 has three or more first frequency conversion power supply modules 1101 The power receiving module 21 of the power receiving device 2 is provided with a first power receiving module 2101, a second power receiving module 2102 and one or more third power receiving modules 2103, and the third power receiving module 2103 is The number of variable-frequency power supply modules 1101 is increased or decreased. The following is an example of four first variable-frequency power supply modules 1101 in the variable-frequency power supply module 11. It only has variable-frequency power supply modules 11 corresponding to power receiving modules 21. The functions of charging and data transmission are sufficient, and this does not limit the scope of the patent of the present invention. If other modifications and equivalent structural changes are used, they should be included in the scope of the patent of the present invention in the same way.

The power receiving microprocessor 211 of the power receiving module 21 is electrically connected to the AM carrier modulation circuit 214 and the circuit breaker protection circuit 215 to operate and control data signals, and the power receiving microprocessor 211 is electrically connected to the voltage stabilizing circuit 216 to control The data signal is transmitted stably through timing arrangement, and then through the data code analysis software built in the power supply microprocessor 111 of the frequency conversion power supply module 11, for the inductive power supply to transmit the power, and the data code of the data signal is also It can be transmitted stably to minimize the loss during power transmission, and when the load current of the power receiving module 21 of the inductive power supply changes rapidly, it will not affect the data code analysis of the power supply microprocessor 111, and the power receiving The power conversion circuit of the module 21 and the circuit used for data transmission are independent and separated, so that the maximum transmission power of the power supply system can be increased.

Please refer to Figures 1 to 7, which are the circuit block diagram of the present invention, the circuit block diagram of the first variable frequency power supply module, the circuit block diagrams of the first and third power receiving modules, and the circuit block diagram of the second power receiving module , the operation flowchart of power supply device (1), (two) and the operation flow diagram of power receiving device, can find out clearly by shown in the figure, the step during this power supply device 1 operation is to comprise:

(100) The power supply device 1 is on standby, and each first frequency conversion power supply module 1101 turns off the power output, and clears the system status flag in the power supply microprocessor 111 .

(101) The power supply device 1 detects whether a power receiving device 2 enters the sensing range through the first frequency conversion power supply module 1101 corresponding to the first power receiving module 2101 of the power receiving device 2 . If the activation code sent by the power receiving device 2 is received, go to step (102); if not, go to step (100).

(102) The power supply microprocessor 111 of the first variable frequency power supply module 1101 corresponding to the first power receiving module 2101 checks the identity code from the power receiving device 2 and compares whether it is on the list of authorized power supply identities? If yes, go to step (103); if no, go to step (107).

(103) The power supply microprocessor 111 of the first variable frequency power supply module 1101 corresponding to the first power receiving module 2101 checks whether the power receiving state data code from the power receiving device 2 is in a normal power supply state? If yes, go to step (106); if no, go to step (104).

(104) Mark the system state of the power receiving device 2 in the power supply microprocessor 111 of the first variable frequency power supply module 1101 corresponding to the first power receiving module 2101 as an error state.

(105) Transfer the system error status in the power supply microprocessor 111 of each first variable frequency power supply module 1101 to the power supply microprocessor 111 in other first variable frequency power supply modules 1101 through the signal control circuit 12 for processing.

(106) Check the system status flag transmitted from the signal control circuit 12 in the power supply microprocessor 111 of the other first variable frequency power supply modules 1101, and confirm whether each first variable frequency power supply module 1101 supplies power normally? If yes, go to step (108); if no, go to step (107).

(107) Turn off the power output of each first variable frequency power supply module 1101, and then proceed to step (100).

(108) The power supply microprocessor 111 of each first frequency conversion power supply module 1101 checks the power received at present and compares it with the predetermined power through the power state data code from the power receiving device 2 respectively. If the power received at present is higher than the predetermined power, Then proceed to step (109); if the currently received power is lower than the predetermined power, proceed to step (110); if the currently received power is equal to the predetermined power, proceed to step (111).

(109) Increase the operating frequency corresponding to the need to adjust the output of the power supply microprocessor 111 to the power supply drive unit 112, reduce the output power by frequency conversion, and then proceed to step (111).

(110) Decrease the operating frequency of the power supply microprocessor 111 output to the power supply driving unit 112 according to the need to adjust, and increase the output power by means of frequency conversion.

(111) Each power supply microprocessor 111 checks whether the output power of each first variable frequency power supply module 1101 has reached a predetermined upper limit, if yes, then proceed to step (112); if not, then proceed to step (113).

(112) The output power has reached the predetermined upper limit. The power supply microprocessor 111 of each first variable frequency power supply module 1101 marks the system state of the power supply device 1 as an error state, and then proceeds to step (105).

(113) Each power supply microprocessor 111 continues to supply power, and then proceeds to step (102).

In addition, the operation steps of the power receiving device 2 include:

(200) The first power receiving module 2101 in the power receiving device 2 receives the detection signal sent by the power supply device 1 , and sends back the activation code to the corresponding first variable frequency power supply module 1101 in the power supply device 1 .

(201) The above-mentioned first power receiving module 2101 transmits the identification code to the corresponding first frequency conversion power supply module 1101 in the power supply device 1 .

(202) The first power receiving module 2101 transmits the power supply status data code to the corresponding first variable frequency power supply module 1101 in the power supply device 1 .

(203) Each of the first power receiving module 2101 , the second power receiving module 2102 and the third power receiving module 2103 transmits the power state data code of power reception to the corresponding first variable frequency power supply module 1101 in the power supply device 1 .

(204) The first power receiving module 2101 checks whether the voltage at the power receiving output terminal 23 is equal to a predetermined voltage through the voltage divider circuit 22 . If yes, go to step (205), if not, mark an error state, and then go to step (202).

(205) The first power receiving module 2101, the second power receiving module 2102 and each third power receiving module 2103 of the power receiving device 2 continue to receive power, and then proceed to step (201).

When the above-mentioned power receiving device 2 enters the sensing range of the power supply device 1, because the direction of the power receiving device 2 can be rotated, only the first power receiving module 2101 of the power receiving device 2 is required to supply power to any first frequency conversion of the adjacent power supply device 1 Module 1101 can carry out subsequent processing. The first power receiving module 2101 of the power receiving device 2 receives the detection signal and sends back the activation code, and then sends the identification code, because the identification code can include user information, stored value, etc. Information, so the corresponding first frequency conversion power supply module 1101 in the power supply device 1 will start the power supply after receiving the identification code and will compare whether it is on the list of payment-approved power-supply identities, and judge that it is a user who has paid the fee. It can prevent illegal persons from stealing electricity.

During the standby time of the variable frequency power supply module 11 of the above power supply device 1, due to the difference in the manufacturing of the power supply coil 1161, there will be a slight inductance error and the power output will be different. However, the above method can be adjusted to make the output power the same as the preset The power value is set to avoid the situation that the power receiving device 2 cannot be charged or is dangerous because the power output is too low or too high.

Since the first variable frequency power supply modules 1101 of the power supply device 1 have power supply coils 1161 respectively, each power supply coil 1161 can generate the same predetermined energy output after the power output is adjusted by each first variable frequency power supply module 1101, which is used in the power receiving device When each power receiving coil 2181 of 2 aligns with each power supply coil 1161, each power receiving coil 2181 can receive the energy input of the same predetermined power, and the total voltage generated after series connection will be the same as the predetermined multiple voltage; if each second receiving coil 2181 When the power receiving coils 2181 of the electric module 2102 and the third power receiving module 2103 are deflected and do not align with the power supply coils 1161, the power receiving coils 2181 of the second power receiving module 2102 and the third power receiving module 2103 will receive If the energy input is lower than the predetermined power, the total voltage output after series connection will be lower than the predetermined multiple voltage. The voltage circuit 22 performs voltage division processing, and then outputs the divided total voltage to the power receiving microprocessor 211 of the first power receiving module 2101, and the power receiving microprocessor 211 of the first power receiving module 2101 then outputs the received The total voltage after voltage division is compared with the predetermined multiple voltage. If they are the same, no action will be taken. When the total voltage after voltage division is not equal to the predetermined multiple voltage, the power receiving microprocessor 211 of the first power receiving module 2101 will pass through the amplitude modulation carrier modulation circuit. 214 and the power receiving coil 2181 transmit a power receiving state error code to the corresponding first variable frequency power supply module 1101 in the power supply device 1 .

When the first variable frequency power supply module 1101 corresponding to the first power receiving module 2101 on the power supply device 1 receives the error code through the power supply coil 1161, it is analyzed by the signal analysis circuit 113 and processed by the power supply microprocessor 111, and the error code corresponding to the first The power supply microprocessor 111 of the first variable frequency power supply module 1101 of the power receiving module 2101 transmits the error signal to the signal control circuit 12, and the signal control circuit 12 transmits the system status signal to other first power receiving modules after receiving the error signal 2101. Mark the system state of the power receiving device 2 as an error, and stop the power supply of each frequency conversion power supply module 11, so as to stop charging immediately when the voltage is unstable, too high or too low, thereby achieving the purpose of protecting the system.

In addition, after each of the first power receiving module 2101, the second power receiving module 2102 and the third power receiving module 2103 transmits the power status data code of power reception to the corresponding first variable frequency power supply module 1101 in the power supply device 1, each first The power supply microprocessor 111 of the variable frequency power supply module 1101 respectively checks the power currently received by the power receiving end and compares it with the predetermined power. If the current received power is higher than the predetermined power, then increase the corresponding operating frequency of the power supply drive unit 112 that needs to be adjusted. Use frequency conversion to reduce the output power; if the current received power is lower than the predetermined power, then reduce the corresponding operating frequency of the power supply drive unit 112 to be adjusted, and use frequency conversion to increase the output power; if the current received power is equal to the predetermined power, then do not Adjustment, so the adjustment method can make the power received by the power receiving module 2 equal to the predetermined power; and it can also check whether the output power has reached the predetermined upper limit of the power supply device 1, and continue to supply power when the predetermined upper limit of the power supply device 1 is not reached. When the power supply device 1 has a predetermined upper limit, each first variable frequency power supply module 1101 whose output power has reached the predetermined upper limit marks the system status of the power supply device 1 as an error, and then transmits the status to other first variable frequency power supply modules 1101 through the signal control circuit 12 The power supply microprocessor 111 performs processing to make the power supply device 1 stop supplying power.

The plurality of power supply coils 1161 of the power supply device 1 and the plurality of power receiving coils 2181 of the power receiving device 2 can be arranged in different shapes such as rectangle, triangle, straight line or cross, and only have a plurality of power supply coils 1161 and receiving coils 2181. The electric coils 2181 are respectively aligned to perform mutual induction and transmission functions, which does not limit the patent scope of the present invention. If other modifications and equivalent structural changes are used, they should be included in the patent scope of the present invention in the same way. Together with Chen Ming.

In addition, please refer to FIG. 8, which is a three-dimensional appearance view of a preferred embodiment of the present invention. It can be clearly seen from the figure that the power supply device 1 can be installed in a columnar body, and the power receiving device 2 can be installed in a cylindrical body. Installed around the steering handle of the locomotive, when the locomotive is parked, the steering handle is brought close to the column, so that the power supply device 1 can supply power to the power receiving device 2 for charging.

The above-mentioned vehicle inductive charging method of the present invention can have the following advantages in actual use, such as:

(1) The power supply device 1 wirelessly transmits power through the frequency conversion power supply module 11, and receives power through the power receiving module 21 of the power receiving device 2, and uses the first power receiving module 2101 and the second power receiving module 2102 or the first power receiving module 2101 The power receiving module 2101, the second power receiving module 2102, and one or more third power receiving modules 2103 are connected in series so that the total voltage can be increased to charge the vehicle, and there is no need for a charging socket to prevent water from entering There is no power leakage in the socket, and there is no need to connect the power cord, and the data transmission method can be used to first identify the identity and then perform the charging operation, and can also perform operations such as value storage and depreciation.

(2) The power supply microprocessor 111 of each first frequency conversion power supply module 1101 in the frequency conversion power supply module 11 performs frequency conversion power adjustment mode through the power state data code from the power receiving device 2, so that the output power is adjusted to be the same as the preset power value In order to avoid the situation that the voltage is too low or too high, resulting in failure to charge or dangerous loss.

(3) After the power receiving module 21 of the power receiving device 2 receives power and connects it in series, use the power receiving microprocessor 211 of the first power receiving module 2101 to compare with the voltage divider circuit 22, if the divided total voltage is not When it is equal to the predetermined multiple voltage, the first power receiving module 2101 will transmit a power receiving status error data code and transmit it to the signal control circuit 12 through the corresponding first variable frequency power supply module 1101, and the signal control circuit 12 will send a signal to other first The variable frequency power supply module 1101 can stop the power supply, that is, it can stop charging immediately when the voltage is unstable, too high or too low.

(4) Use the power receiving module 21 in series to increase the total voltage to charge the vehicle, and use the circuit shunt and voltage divider circuit 22 to divide the voltage so that the power receiving microprocessor 211 of the first power receiving module 2101 can receive The total output voltage after voltage division is compared, so there is no need to use parts with high voltage specifications.

Therefore, the present invention is mainly aimed at the vehicle inductive charging method, and each first variable frequency power supply module 1101 in the power supply device 1 variable frequency power supply module 11 can be connected in parallel to the signal control circuit 12 and the power supply source 13, and the power receiving device 2 is powered by The first power receiving module 2101 and the second power receiving module 2102 of the module 21 or the first power receiving module 2101, the second power receiving module 2102 and one or more third power receiving modules 2103 are connected in series, and the second power receiving module 2102 In order to electrically connect the voltage stabilizing circuit 216 to the power receiving output terminal 23, the voltage stabilizing circuit 216 is shunted and connected in series with the voltage dividing circuit 22, and then electrically connected to the power receiving microprocessor 211 of the first power receiving module 2101, by This allows the vehicle to be charged wirelessly to prevent water from entering the socket to cause power leakage or criminals to use the charging socket to steal electricity. There is no need to plug in the power cord, and the data transmission method can be used for identification first. Then carry out charging operations or carry out operations such as value storage and depreciation, so as to achieve convenient use, anti-leakage and anti-theft as the main protection points.

The above description is only 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.

Claims (7)

1. A vehicle inductive charging method, characterized in that it includes a power supply device and a power receiving device, wherein the power supply device has a first variable frequency power supply module connected in parallel in the frequency conversion power supply module, and each of the first variable frequency power supply modules is connected in parallel The power supply microprocessor is electrically connected to the power supply driving unit that drives the power supply module to operate, the signal analysis circuit that detects and analyzes the coil data signal, the coil voltage detection circuit that detects the voltage of the power supply coil, and the power supply unit that supplies the required power, and The power supply drive unit is electrically connected to the resonant circuit, and the resonant circuit, coil voltage detection circuit and signal analysis circuit are respectively electrically connected to the power supply coils that can send power and transmit data signals to the outside. The device is connected in series to the signal control circuit that controls each of the first frequency conversion power supply modules to stop power supply, and the power supply unit and the power supply drive unit are respectively connected in parallel to the power supply source. A power receiving module, a second power receiving module, the operation steps of the power supply device include: Step A01: the power supply device is on standby, each first variable frequency power supply module shuts off the power output, and clears the system status flag in the power supply microprocessor; Step A02: The power supply device detects whether a power receiving device enters the sensing range through the first variable frequency power supply module corresponding to the first power receiving module of the power receiving device, and if the activation code transmitted by the power receiving device is received, proceed to step A03; If not, proceed to step A01; Step A03: The power supply microprocessor of the first variable frequency power supply module corresponding to the first power receiving module checks the identification code from the power receiving device and compares whether it is on the list of approved power supply identities, if yes, proceed to step A04 ; If not, proceed to step A08; Step A04: The power supply microprocessor of the first frequency conversion power supply module corresponding to the first power receiving module checks whether the power receiving status data code from the power receiving device is in a normal power supply state, if yes, proceed to step A07; if yes If not, proceed to step A05; Step A05: Mark the system state of the power receiving device in the power supply microprocessor of the first variable frequency power supply module corresponding to the first power receiving module as an error state; Step A06: transfer the system error state in the power supply microprocessor of each first variable frequency power supply module to the power supply microprocessor in other first variable frequency power supply modules through the signal control circuit for processing, and then proceed to step A08; Step A07: Check the system status flags transmitted from the signal control circuit in the power supply microprocessors of other first variable frequency power supply modules, and confirm whether each first variable frequency power supply module is normally powered, if yes, go to step A09; if not, Then proceed to step A08; Step A08: Turn off the power output of each first variable frequency power supply module, and then proceed to Step A01; Step A09: The power supply microprocessors of each first variable frequency power supply module respectively check the current received power through the power state data code from the power receiving device and compare it with the predetermined power. If the currently received power is higher than the predetermined power, proceed to step A09. A10; if the currently received power is lower than the predetermined power, proceed to step A11; if the currently received power is equal to the predetermined power, proceed to step A12; Step A10: Increase the operating frequency corresponding to the output of the power supply microprocessor to the power supply drive unit, reduce the output power by frequency conversion, and then proceed to step A12; Step A11: reduce the operating frequency corresponding to the output of the power supply microprocessor to the power supply drive unit, and increase the output power by frequency conversion; Step A12: Each power supply microprocessor checks whether the output power of the corresponding first frequency conversion power supply modules has reached a predetermined upper limit, if yes, proceed to step A13; if no, proceed to step A14; Step A13: The output power has reached the predetermined upper limit. The power supply microprocessors of the first frequency conversion power supply modules mark the system status of the power supply device as an error state, and then proceed to step A06; Step A14: each power supply microprocessor continues to supply power, and then proceed to step A03. 2. The vehicle inductive charging method according to claim 1, wherein the power supply driving unit of each first variable frequency power supply module of the power supply device is electrically connected to the power supply microprocessor, the resonant circuit and the power supply unit, as for signal analysis The circuit and the coil voltage detection circuit are connected to the resonant circuit in parallel, and the power supply unit and the power supply drive unit are connected to the power supply in parallel. 3. The vehicle inductive charging method according to claim 1, wherein the first power receiving module and the second power receiving module of the power receiving device are respectively provided with power receiving microprocessors, and the power receiving microprocessors are respectively connected to The voltage detection circuit for detecting the voltage of the power supply, the amplitude modulation carrier modulation circuit for data signal encoding, the circuit breaker protection circuit for switch control during operation, the voltage stabilizer circuit and the DC step-down device for stabilizing the voltage of the power supply source, and the circuit breaker protection The circuit is electrically connected to the power-receiving microprocessor and the voltage stabilizing circuit, and is electrically connected to the rectifying and filtering circuit for filtering and rectifying the power signal by using the voltage detection circuit, the circuit breaker protection circuit and the DC voltage dropper, and then rectifying and filtering The circuit and the AM carrier modulation circuit are electrically connected to the resonant circuit, that is, each resonant circuit is electrically connected to each power supply coil of the positive power supply module to transmit the power receiving coil for inductive signal transmission, and the second power receiving module is powered by a voltage stabilizing circuit. It is electrically connected to the power receiving output terminal, and its voltage stabilizing circuit is shunted and connected in series with a voltage dividing circuit for dividing the total voltage, and then electrically connected to the power receiving microprocessor of the first power receiving module, the first power receiving module and the second power receiving module are connected in series with a voltage stabilizing circuit, so that the voltages can be added to form a total voltage, which is compared with the power receiving microprocessor. 4. The vehicle inductive charging method according to claim 3, wherein one or more third power receiving modules are connected in series between the first power receiving module and the second power receiving module of the power receiving device , and the internal circuit and components of the third power receiving module are the same as those of the first power receiving module and the second power receiving module, and the first power receiving module, the second power receiving module and the third power receiving module are formed by voltage stabilizing circuits in series. 5. A vehicle inductive charging method, characterized in that it includes a power supply device and a power receiving device, wherein the power supply device has two first variable frequency power supply modules connected in parallel in the frequency conversion power supply module, and the power receiving device is in the The power receiving module is provided with a first power receiving module and a second power receiving module in series, the first power receiving module and the second power receiving module are respectively equipped with power receiving microprocessors, and the power receiving microprocessors are respectively connected to Voltage detection circuit for detecting the voltage of power supply, AM carrier modulation circuit for data signal encoding, open circuit protection circuit for switch control during operation, voltage stabilizing circuit and DC step-down circuit for stabilizing the voltage of power supply, and circuit breaker protection circuit It is electrically connected to the power receiving microprocessor and the voltage stabilizing circuit, and is electrically connected to the rectification and filtering circuit for filtering and rectifying the power signal by using the voltage detection circuit, the circuit breaker protection circuit and the DC voltage reducer, and then the rectification and filtering circuit , The amplitude modulation carrier modulation circuit is electrically connected to the resonant circuit, that is, each resonant circuit is electrically connected to each power supply coil of the positive power supply module to transmit the power receiving coil for inductive signal transmission, and the second power receiving module is electrically connected to the voltage stabilizing circuit Connected to the power receiving output terminal, its voltage stabilizing circuit is shunted and connected in series with a voltage dividing circuit for dividing the total voltage, and then electrically connected to the power receiving microprocessor of the first power receiving module, the first power receiving module and The second power receiving module uses a voltage stabilizing circuit to form a series connection, so that the voltages can be added to form a total voltage, and compared with the power receiving microprocessor. The steps for the operation of the power receiving device include: Step B01: the first power receiving module in the power receiving device receives the detection signal sent by the power supply device, and sends back the activation code to the corresponding first frequency conversion power supply module in the power supply device; Step B02: The above-mentioned first power receiving module transmits the identification code to the corresponding first variable frequency power supply module in the power supply device; Step B03: The above-mentioned first power receiving module transmits the power supply status data code to the corresponding first variable frequency power supply module in the power supply device; Step B04: Each of the first power receiving module, the second power receiving module, and the third power receiving module transmits the power state data code of power reception to the corresponding first variable frequency power supply module in the power supply device; Step B05: The first power receiving module checks whether the voltage of the power receiving output terminal is equal to the predetermined voltage through the voltage divider circuit, if yes, proceed to step B06, if not, mark an error state, and then proceed to step B03; Step B06: The first power receiving module and the second power receiving module of the power receiving device continue to receive power, and then proceed to step B02. 6. The vehicle inductive charging method according to claim 5, characterized in that each first variable frequency power supply module of the power supply device is respectively electrically connected to the power supply drive unit, the detection and The signal analysis circuit for analyzing the coil data signal, the coil voltage detection circuit for detecting the voltage of the power supply coil, the power supply unit for supplying the required power, and the power supply driving unit is electrically connected to the resonant circuit, the resonant circuit, the coil voltage detection circuit and the signal analysis The circuits are then electrically connected to the power supply coils that can send power and transmit data signals to the outside. Each first frequency conversion power supply module is a signal control circuit that uses a power supply microprocessor in series to control each first frequency conversion power supply module to stop power supply, and The power supply unit and the power supply driving unit are respectively connected in parallel to the power supply source. 7. The vehicle inductive charging method according to claim 5, characterized in that, the variable frequency power supply module can be further added to have three or more first variable frequency power supply modules connected in parallel, and the power receiving device In the module, one or more third power receiving modules are connected in series between the first power receiving module and the second power receiving module. The internal circuit and components of the third power receiving module are the same as those of the first power receiving module and the second power receiving module. Two power receiving modules, the first power receiving module, the second power receiving module and the third power receiving module are connected in series with a voltage stabilizing circuit, and in step B06, the power receiving device is based on the first power receiving module, the second power receiving module The module and each third power receiving module continue to receive power.