Eddy current integrated circuit, power system and extended-range new energy automobile

Abstract

The utility model discloses an eddy current integrated circuit, a power system and a range-extended new energy automobile, and the eddy current integrated circuit comprises an integrated chip which is electrically connected with an eddy current sensor, a fuel engine processing unit and a motor controller processing unit. A magnetic induction signal generated when the eddy current sensor detects rotation of a rotating shaft of a generator is converted into a serial peripheral interface signal, a pseudo square wave signal and an analog resolver signal, the pseudo square wave signal is sent to the fuel engine processing unit, and the serial peripheral interface signal and the analog resolver signal are sent to the motor controller processing unit. The magnetic induction signals are converted into the serial peripheral interface signals, the pseudo square wave signals and the analog rotary transformer signals through the integrated chip, the magnetic induction signals carrying information are converted into various types of signals, other structures can conveniently obtain the information carried by the magnetic induction signals, and the overall structure is further simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive control circuits, and more specifically, to an eddy current integrated circuit, a power system, and an extended-range new energy vehicle. Background Art

[0002] There are three classifications of power systems for new energy electric vehicles. One is a pure electric vehicle, one is a hybrid electric vehicle, and one is an extended-range electric vehicle. When the power battery of the extended-range electric vehicle is insufficient, a traditional fuel engine is used to generate electricity to supplement the power, which combines the economy of daily driving and also solves the mileage anxiety of users during long-distance driving.

[0003] When the fuel injection of the fuel engine of the extended-range electric vehicle is carried out, a crankshaft position sensor (CPS) is required to obtain the engine position and speed, so as to control the injection sequence. Usually, the crankshaft of the fuel engine is connected to a flywheel, and a tooth position is set on the flywheel, and the crankshaft position sensor is connected through the tooth position. However, setting the crankshaft position sensor and machining the outer contour of the flywheel to have a tooth position for installing the crankshaft position sensor not only makes the overall structure more complex, but also increases the overall cost, and the position and speed signals output by the crankshaft position sensor can only be acquired and processed by the fuel engine control unit (ECU), which is not convenient for other structures to obtain information such as the engine position and speed.

[0004] In the prior art, the patent document with the application publication number CN118074436A discloses a method for obtaining the motor speed signal of an extended-range electric drive system. By installing the Hall sensor of the motor on the engine and transmitting the signal to the motor controller through a wire harness, the motor control is realized by processing the speed signal through the motor controller.

[0005] The patent document with the application publication number CN116353366A discloses a signal input module in an extended-range integrated controller and its control method, which is used to receive signals transmitted by a speed sensor, a camshaft position sensor, an air flow meter, an intake pressure sensor, a throttle position sensor, a water temperature sensor, a knock sensor, an oxygen sensor, a voltage sensor, a current sensor, etc. and the battery SOC value, and transmit the processed signals to the main control chip.

[0006] In the prior art, methods for obtaining speed signals, position signals, etc. and transmitting them to the fuel engine control unit are provided, but there is no technical solution involving signal conversion for other structures to obtain.

[0007] Therefore, the utility model provides an eddy current integrated circuit, a power system, and an extended-range new energy vehicle. Summary of the Utility Model

[0008] In view of this, the present utility model provides an eddy current integrated circuit, a power system and an extended-range new energy vehicle to achieve structural simplification and signal conversion.

[0009] On the one hand, the present utility model provides an eddy current integrated circuit, including:

[0010] An eddy current sensor for detecting the rotation of the generator shaft of the power system and generating a magnetic induction signal;

[0011] An integrated chip electrically connected to the eddy current sensor for converting the magnetic induction signal into a serial peripheral interface signal, a pseudo-square wave signal and an analog resolver signal;

[0012] The integrated chip is also electrically connected to the fuel engine processing unit and the motor controller processing unit of the power system respectively;

[0013] The integrated chip sends the pseudo-square wave signal to the fuel engine processing unit so that the fuel engine processing unit controls the ignition sequence of the fuel engine based on the pseudo-square wave signal;

[0014] The integrated chip sends the serial peripheral interface signal and the analog resolver signal to the motor controller processing unit so that the motor controller processing unit controls the operation of the generator based on the serial peripheral interface signal and the analog resolver signal.

[0015] Optionally, the integrated chip includes a signal extraction unit and a signal conversion unit;

[0016] The input end of the signal extraction unit is electrically connected to the output end of the eddy current sensor for extracting an effective signal from the magnetic induction signal;

[0017] The input end of the signal conversion unit is electrically connected to the output end of the signal extraction unit. The first output end of the signal conversion unit is electrically connected to the input end of the fuel engine processing unit. The second output end of the signal conversion unit is electrically connected to the motor controller processing unit. The third output end of the signal conversion unit is electrically connected to the motor controller processing unit;

[0018] The signal conversion unit converts the effective signal into the serial peripheral interface signal, the pseudo-square wave signal and the analog resolver signal; wherein, the first output end is used for outputting the pseudo-square wave signal, the second output end is used for outputting the serial peripheral interface signal, and the third output end is used for outputting the analog resolver signal.

[0019] Optionally, the input end of the signal extraction unit is electrically connected to the output end of the eddy current sensor, including:

[0020] The integrated chip further includes a filter and an amplifier connected to each other. The input end of the filter is electrically connected to the output end of the eddy current sensor, the output end of the filter is electrically connected to the input end of the amplifier, and the output end of the amplifier is electrically connected to the input end of the signal extraction unit.

[0021] Optionally, the input end of the signal conversion unit is electrically connected to the output end of the signal extraction unit, and includes:

[0022] The integrated chip further includes an analog-to-digital conversion unit. The input end of the analog-to-digital conversion unit is electrically connected to the output end of the signal extraction unit, and the output end of the analog-to-digital conversion unit is electrically connected to the input end of the signal conversion unit;

[0023] The analog-to-digital conversion unit converts the valid signal into a digital signal for the signal conversion unit to obtain.

[0024] Optionally, the signal conversion unit includes:

[0025] A decoding sub-unit. The first signal input end of the decoding sub-unit is electrically connected to the output end of the analog-to-digital conversion unit. The first signal output end of the decoding sub-unit is respectively electrically connected to the input end of the pseudo-square wave analog sub-unit, the input end of the serial peripheral interface, and the input end of the digital-to-analog conversion sub-unit. The decoding sub-unit interprets the digital signal to generate position information;

[0026] The output end of the pseudo-square wave analog sub-unit is electrically connected to the first output end. The pseudo-square wave analog sub-unit converts the position information into the pseudo-square wave signal;

[0027] The output end of the serial peripheral interface is electrically connected to the second output end. The serial peripheral interface converts the position information into the serial peripheral interface signal;

[0028] The output end of the digital-to-analog conversion sub-unit is electrically connected to the third output end. The digital-to-analog conversion sub-unit converts the position information into the analog resolver signal.

[0029] Optionally, the pseudo-square wave analog sub-unit includes:

[0030] A second resistor. The input end of the second resistor is electrically connected to the first signal output end of the decoding sub-unit;

[0031] A transistor. The gate of the transistor is electrically connected to the output end of the second resistor. The source of the transistor is electrically connected to the reference voltage signal terminal. The drain of the transistor is electrically connected to the first output end;

[0032] A first resistor, an output end of the first resistor is electrically connected to a drain of the transistor, and an input end of the first resistor is electrically connected to a power supply voltage terminal;

[0033] A voltage stabilizing diode, a negative electrode of the voltage stabilizing diode is electrically connected to the power supply voltage terminal;

[0034] A capacitor, one plate of the capacitor is electrically connected to a positive electrode of the voltage stabilizing diode, and the other plate of the capacitor is electrically connected to the input end of the first resistor.

[0035] Optionally, the integrated chip further includes:

[0036] A crystal oscillator circuit, an output end of the crystal oscillator circuit is electrically connected to a second signal input end of the decoding sub-unit; the crystal oscillator circuit provides a first oscillation to the decoding sub-unit, so that the decoding sub-unit controls the excitation unit according to the first oscillation;

[0037] The excitation unit, an input end of the excitation unit is electrically connected to a second signal output end of the decoding sub-unit, and an output end of the excitation unit is electrically connected to an input end of the eddy current sensor; the excitation unit generates an excitation signal according to the control of the decoding sub-unit, so that the eddy current sensor generates a second oscillation according to the excitation signal.

[0038] On the other hand, the present invention further provides a power system, including: a fuel engine, a generator, and an eddy current integrated circuit, the eddy current integrated circuit is the eddy current integrated circuit described in any one of the above, wherein,

[0039] The fuel engine includes a cylinder, the generator includes a rotor, one end of the generator shaft is connected to the cylinder, and the other end is connected to the rotor, and the eddy current sensor of the eddy current integrated circuit is fixed on the side wall of the generator shaft.

[0040] Optionally, the fuel engine further includes a flywheel, the flywheel is sleeved outside the generator shaft and fixedly connected to the generator shaft, along the extending direction of the generator shaft, the projection of the flywheel is circular, and the center line of the flywheel coincides with the center line of the rotor;

[0041] Along the extending direction of the generator shaft, the eddy current sensor is located between the flywheel and the rotor.

[0042] On yet another aspect, the present invention further provides an extended-range new energy vehicle, including the eddy current integrated circuit described in any one of the above.

[0043] Compared with the prior art, the eddy current integrated circuit, the power system, and the extended-range new energy vehicle provided by the present invention at least achieve the following beneficial effects:

[0044] In the eddy current integrated circuit, power system and range-extended new energy vehicle provided by the present utility model, the integrated chip is electrically connected to the eddy current sensor, the fuel engine processing unit and the motor controller processing unit respectively. The integrated chip converts the magnetic induction signal generated by detecting the rotation of the generator shaft by the eddy current sensor into a serial peripheral interface signal, a pseudo-square wave signal and an analog resolver signal, and sends the pseudo-square wave signal to the fuel engine processing unit, so that the fuel engine processing unit controls the ignition sequence of the fuel engine based on the pseudo-square wave signal, and sends the serial peripheral interface signal and the analog resolver signal to the motor controller processing unit, so that the motor controller processing unit controls the operation of the generator based on the serial peripheral interface signal and the analog resolver signal. The eddy current sensor generates a magnetic induction signal by detecting the rotation of the generator shaft. The eddy current sensor does not need to be specifically installed on the flywheel, so there is no need to modify the flywheel, thus simplifying the structure. The integrated chip converts the magnetic induction signal into a serial peripheral interface signal, a pseudo-square wave signal and an analog resolver signal, realizing the conversion of the magnetic induction signal carrying information into various types of signals, facilitating other structures to obtain the information carried by the magnetic induction signal, and further simplifying the overall structure.

[0045] Of course, it is not necessary for any product implementing the present utility model to simultaneously achieve all the above-described technical effects.

[0046] Other features and advantages of the present utility model will become clear from the following detailed description of the exemplary embodiments of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0047] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present utility model and, together with the description thereof, are used to explain the principles of the present utility model.

[0048] Figure 1 It is a schematic structural diagram of an eddy current integrated circuit provided by the present utility model.

[0049] Figure 2 It is a circuit diagram of a pseudo-square wave simulation sub-unit provided by the present utility model.

[0050] Figure 3 It is a schematic structural diagram of a power system.

[0051] Figure 4 It is a schematic structural diagram of a range-extended new energy vehicle provided by the present utility model.

[0052] In the figure: 000, eddy current integrated circuit; 1, eddy current sensor; 2, integrated chip; 3, fuel engine processing unit; 4, motor controller processing unit; 5, signal extraction unit; 6, signal conversion unit; 7, filter; 8, amplifier; 9, analog-to-digital conversion unit; 10, decoding subunit; 11, pseudo-square wave simulation subunit; 12, serial peripheral interface; 13, digital-to-analog conversion subunit; 14, second resistor; 15, transistor; 16, first resistor; 17, voltage regulator diode; 18, capacitor; 19, crystal oscillator circuit; 20, excitation unit; 100, power system; 21, fuel engine; 22, generator; 23, cylinder; 24, rotor; 25, generator shaft; 26, flywheel; 200, range-extended new energy vehicle. Detailed implementation manners

[0053] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present invention.

[0054] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way limits the present invention, its application or use.

[0055] Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the specification.

[0056] In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0057] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0058] Embodiment 1

[0059] Combined with Figure 1 , Figure 1 is a schematic structural diagram of an eddy current integrated circuit provided by the present invention, to illustrate a specific embodiment of the eddy current integrated circuit 000 provided by the present invention, including:

[0060] An eddy current sensor 1, configured to detect the rotation of the generator shaft of the power system and generate a magnetic induction signal;

[0061] An integrated chip 2, electrically connected to the eddy current sensor 1, is used to convert the magnetic induction signal into a serial peripheral interface signal, a pseudo-square wave signal, and an analog resolver signal;

[0062] The integrated chip 2 is also electrically connected to the fuel engine processing unit 3 and the motor controller processing unit 4 of the power system respectively;

[0063] The integrated chip 2 sends a pseudo-square wave signal to the fuel engine processing unit 3, so that the fuel engine processing unit 3 controls the ignition sequence of the fuel engine based on the pseudo-square wave signal;

[0064] The integrated chip 2 sends a serial peripheral interface signal and an analog resolver signal to the motor controller processing unit 4, so that the motor controller processing unit 4 controls the operation of the generator based on the serial peripheral interface signal and the analog resolver signal.

[0065] It should be noted that the eddy current sensor 1, the fuel engine processing unit 3 (Electronic Control Unit, ECU), and the motor controller processing unit 4 (Motor control unit, MCU) are all existing structures. The integrated chip 2 realizes the function of signal conversion by integrating a pseudo-square wave circuit on the existing chip MX90510.

[0066] It can be understood that the integrated chip 2 is electrically connected to the eddy current sensor 1, the fuel engine processing unit 3, and the motor controller processing unit 4 respectively, converts the magnetic induction signal detected by the eddy current sensor 1 when the generator shaft rotates into a serial peripheral interface signal, a pseudo-square wave signal, and an analog resolver signal, sends the pseudo-square wave signal to the fuel engine processing unit 3, so that the fuel engine processing unit 3 controls the ignition sequence of the fuel engine based on the pseudo-square wave signal, and sends the serial peripheral interface signal and the analog resolver signal to the motor controller processing unit 4, so that the motor controller processing unit 4 controls the operation of the generator based on the serial peripheral interface signal and the analog resolver signal. The magnetic induction signal is generated by detecting the rotation of the generator shaft through the eddy current sensor 1. The eddy current sensor 1 does not need to be specifically installed on the flywheel, so there is no need to modify the flywheel, thus simplifying the structure; the integrated chip 2 converts the magnetic induction signal into a serial peripheral interface signal, a pseudo-square wave signal, and an analog resolver signal, realizing the conversion of the magnetic induction signal carrying information into multiple types of signals, facilitating other structures to obtain the information carried by the magnetic induction signal, and further simplifying the overall structure.

[0067] Embodiment 2

[0068] Refer to Figure 1 and Figure 2 , Figure 2 which is a circuit diagram of a pseudo-square wave simulation sub-unit provided by the present invention, to illustrate another specific embodiment of the eddy current integrated circuit 000 provided by the present invention, including:

[0069] An eddy current sensor 1 is used to detect the rotation of the generator shaft of the power system and generate a magnetic induction signal;

[0070] The integrated chip 2 includes a signal extraction unit 5. The input end of the signal extraction unit 5 is electrically connected to the output end of the eddy current sensor 1 and is used to extract an effective signal from the magnetic induction signal;

[0071] Specifically, the input end of the signal extraction unit 5 is electrically connected to the output end of the eddy current sensor 1, including:

[0072] The integrated chip 2 further includes a connected filter 7 and amplifier 8. The input end of the filter 7 is electrically connected to the output end of the eddy current sensor 1. The output end of the filter 7 is electrically connected to the input end of the amplifier 8. The output end of the amplifier 8 is electrically connected to the input end of the signal extraction unit 5.

[0073] The integrated chip 2 further includes a signal conversion unit 6. The input end of the signal conversion unit 6 is electrically connected to the output end of the signal extraction unit 5. The first output end of the signal conversion unit 6 is electrically connected to the input end of the fuel engine processing unit 3. The second output end of the signal conversion unit 6 is electrically connected to the motor controller processing unit 4. The third output end of the signal conversion unit 6 is electrically connected to the motor controller processing unit 4; The signal conversion unit 6 converts the effective signal into a serial peripheral interface signal, a pseudo-square wave signal, and an analog resolver signal; wherein, the first output end is used to output the pseudo-square wave signal so that the fuel engine processing unit 3 controls the ignition sequence of the fuel engine based on the pseudo-square wave signal; The second output end is used to output the serial peripheral interface signal, and the third output end is used to output the analog resolver signal so that the motor controller processing unit 4 controls the operation of the generator based on the serial peripheral interface signal and the analog resolver signal.

[0074] Specifically, the input end of the signal conversion unit 6 is electrically connected to the output end of the signal extraction unit 5, including:

[0075] The integrated chip 2 further includes an analog-to-digital conversion unit 9. The input end of the analog-to-digital conversion unit 9 is electrically connected to the output end of the signal extraction unit 5. The output end of the analog-to-digital conversion unit 9 is electrically connected to the input end of the signal conversion unit 6;

[0076] The analog-to-digital conversion unit 9 converts the effective signal into a digital signal for the signal conversion unit 6 to obtain.

[0077] Specifically, the signal conversion unit 6 includes:

[0078] The decoding subunit 10, the first signal input end of the decoding subunit 10 is electrically connected to the output end of the analog-to-digital conversion unit 9, and the first signal output end of the decoding subunit 10 is respectively electrically connected to the input end of the pseudo-square wave analog subunit 11, the input end of the serial peripheral interface 12, and the input end of the digital-to-analog conversion subunit 13; the decoding subunit 10 interprets the digital signal to generate position information;

[0079] The output end of the pseudo-square wave analog subunit 11 is electrically connected to the first output end, and the pseudo-square wave analog subunit 11 converts the position information into a pseudo-square wave signal;

[0080] The output end of the serial peripheral interface 12 is electrically connected to the second output end, and the serial peripheral interface 12 converts the position information into a serial peripheral interface signal;

[0081] The output end of the digital-to-analog conversion subunit 13 is electrically connected to the third output end, and the digital-to-analog conversion subunit 13 converts the position information into an analog resolver signal.

[0082] Specifically, the pseudo-square wave analog subunit 11 includes:

[0083] The second resistor 14, the input end of the second resistor 14 is electrically connected to the first signal output end of the decoding subunit 10;

[0084] The transistor 15, the gate of the transistor 15 is electrically connected to the output end of the second resistor 14, the source of the transistor 15 is electrically connected to the reference voltage signal terminal, and the drain of the transistor 15 is electrically connected to the first output end;

[0085] The first resistor 16, the output end of the first resistor 16 is electrically connected to the drain of the transistor 15, and the input end of the first resistor 16 is electrically connected to the supply voltage terminal;

[0086] The voltage regulator diode 17, the negative electrode of the voltage regulator diode 17 is electrically connected to the supply voltage terminal;

[0087] The capacitor 18, one plate of the capacitor 18 is electrically connected to the positive electrode of the voltage regulator diode 17, and the other plate of the capacitor 18 is electrically connected to the input end of the first resistor 16.

[0088] The integrated chip 2 further includes a crystal oscillator circuit 19, the output end of the crystal oscillator circuit 19 is electrically connected to the second signal input end of the decoding subunit 10; the crystal oscillator circuit 19 provides a first oscillation to the decoding subunit 10, so that the decoding subunit 10 controls the excitation unit 20 according to the first oscillation;

[0089] The excitation unit 20, the input end of the excitation unit 20 is electrically connected to the second signal output end of the decoding subunit 10, and the output end of the excitation unit 20 is electrically connected to the input end of the eddy current sensor 1; the excitation unit 20 generates an excitation signal according to the control of the decoding subunit 10, so that the eddy current sensor 1 generates a second oscillation according to the excitation signal.

[0090] It should be noted that the analog-to-digital conversion unit 9 is also called the ADC unit, the serial peripheral interface 12 is also called the SPI communication interface, and the digital-to-analog conversion unit is also called the resolver signal analog unit DAC. The integrated chip 2 further includes power support, which is respectively connected to and supplies power to the signal extraction unit 5, the filter 7, the amplifier 8, the analog-to-digital conversion unit 9, the decoding subunit 10, the pseudo-square wave analog subunit 11, the serial peripheral interface 12, the digital-to-analog conversion subunit 13, the crystal oscillator circuit 19, and the excitation unit 20. For the pseudo-square wave analog subunit 11, the positive pole of the power support can be electrically connected to the power supply voltage terminal, and the negative pole of the power support can be electrically connected to the reference voltage signal terminal. The signal extraction unit 5, the filter 7, the amplifier 8, the analog-to-digital conversion unit 9, the decoding subunit 10, the serial peripheral interface 12, the digital-to-analog conversion subunit 13, the crystal oscillator circuit 19, and the excitation unit 20 are all existing units of the existing chip MX90510, and the pseudo-square wave analog subunit 11 is the pseudo-square wave analog circuit.

[0091] It can be understood that the crystal oscillator circuit 19 provides oscillation to the decoding subunit 10, enabling the decoding subunit 10 to control the excitation unit 20 to emit a high-frequency excitation signal. The eddy current sensor 1 receives the high-frequency excitation signal and starts to oscillate. At this time, the generator shaft 25 rotates, and a three-phase magnetic induction signal carrying information can be generated. The information includes one or both of the engine position and speed, and of course, it is not limited to this; the filter 7 performs filtering processing on the three-phase magnetic induction signal, the amplifier 8 performs amplification processing on the filtered three-phase magnetic induction signal, and the signal extraction unit 5 extracts the effective signal from the amplified three-phase magnetic induction signal. The effective signal can be defined as a signal with a frequency lower than the threshold, and of course, it is not limited to this; the analog-to-digital conversion unit 9 converts the effective signal into a digital signal and transmits it to the decoding subunit 10; the decoding subunit 10 interprets and tracks the effective signal to generate position information in the form of a multi-bit counter; the pseudo-square wave analog subunit 11 obtains the position information from the decoding subunit 10 and converts it into a pseudo-square wave signal, and the serial peripheral interface 12 obtains the position information from the decoding subunit 10 and converts it into a serial peripheral interface signal. The serial peripheral interface signal can also be called an SPI signal, and the digital-to-analog conversion subunit 13 obtains the position information from the decoding subunit 10 and converts it into a sin signal or a cos signal to simulate a resolver signal. By detecting the rotation of the generator shaft by the eddy current sensor 1, a magnetic induction signal is generated. The eddy current sensor 1 does not need to be specifically installed on the flywheel, so there is no need to modify the flywheel, thus simplifying the structure; the integrated chip 2 converts the magnetic induction signal into a serial peripheral interface signal, a pseudo-square wave signal, and an analog resolver signal, realizing the conversion of the magnetic induction signal carrying information into multiple types of signals, facilitating other structures to obtain the information carried by the magnetic induction signal, and further simplifying the overall structure.

[0092] Embodiment 3

[0093] Continue to refer to Figure 1 and Figure 2 , to illustrate another specific embodiment of the eddy current integrated circuit 000 provided by the present utility model, including:

[0094] Eddy current sensor 1, used to detect the rotation of the generator shaft of the power system and generate a magnetic induction signal;

[0095] The integrated chip 2 includes a signal extraction unit 5. The input end of the signal extraction unit 5 is electrically connected to the output end of the eddy current sensor 1, and is used to extract an effective signal from the magnetic induction signal;

[0096] Specifically, the input end of the signal extraction unit 5 is electrically connected to the output end of the eddy current sensor 1, including: The integrated chip 2 also includes a connected filter 7 and amplifier 8. The input end of the filter 7 is electrically connected to the output end of the eddy current sensor 1, the output end of the filter 7 is electrically connected to the input end of the amplifier 8, and the output end of the amplifier 8 is electrically connected to the input end of the signal extraction unit 5.

[0097] The integrated chip 2 also includes a signal conversion unit 6. The input end of the signal conversion unit 6 is electrically connected to the output end of the signal extraction unit 5. The first output end of the signal conversion unit 6 is electrically connected to the input end of the fuel engine processing unit 3, the second output end of the signal conversion unit 6 is electrically connected to the motor controller processing unit 4, and the third output end of the signal conversion unit 6 is electrically connected to the motor controller processing unit 4; The signal conversion unit 6 converts the effective signal into a serial peripheral interface signal, a pseudo square wave signal, and an analog resolver signal; Among them, the first output end is used to output the pseudo square wave signal so that the fuel engine processing unit 3 controls the ignition sequence of the fuel engine based on the pseudo square wave signal; The second output end is used to output the serial peripheral interface signal, and the third output end is used to output the analog resolver signal so that the motor controller processing unit 4 controls the operation of the generator based on the serial peripheral interface signal and the analog resolver signal.

[0098] Specifically, the input end of the signal conversion unit 6 is electrically connected to the output end of the signal extraction unit 5, including:

[0099] The integrated chip 2 also includes an analog-to-digital conversion unit 9. The input end of the analog-to-digital conversion unit 9 is electrically connected to the output end of the signal extraction unit 5, and the output end of the analog-to-digital conversion unit 9 is electrically connected to the input end of the signal conversion unit 6;

[0100] The analog-to-digital conversion unit 9 converts the effective signal into a digital signal for the signal conversion unit 6 to obtain.

[0101] Specifically, the signal conversion unit 6 includes:

[0102] The decoding subunit 10, the first signal input end of the decoding subunit 10 is electrically connected to the output end of the analog-to-digital conversion unit 9, and the first signal output end of the decoding subunit 10 is respectively electrically connected to the input end of the pseudo-square wave analog subunit 11, the input end of the serial peripheral interface 12, and the input end of the digital-to-analog conversion subunit 13; the decoding subunit 10 interprets the digital signal to generate position information;

[0103] The output end of the pseudo-square wave analog subunit 11 is electrically connected to the first output end, and the pseudo-square wave analog subunit 11 converts the position information into a pseudo-square wave signal;

[0104] The output end of the serial peripheral interface 12 is electrically connected to the second output end, and the serial peripheral interface 12 converts the position information into a serial peripheral interface signal;

[0105] The output end of the digital-to-analog conversion subunit 13 is electrically connected to the third output end, and the digital-to-analog conversion subunit 13 converts the position information into an analog resolver signal.

[0106] Specifically, the pseudo-square wave analog subunit 11 includes:

[0107] The second resistor 14, the input end of the second resistor 14 is electrically connected to the first signal output end of the decoding subunit 10;

[0108] The transistor 15, the gate of the transistor 15 is electrically connected to the output end of the second resistor 14, the source of the transistor 15 is electrically connected to the reference voltage signal terminal, and the drain of the transistor 15 is electrically connected to the first output end;

[0109] The first resistor 16, the output end of the first resistor 16 is electrically connected to the drain of the transistor 15, and the input end of the first resistor 16 is electrically connected to the power supply voltage terminal;

[0110] The zener diode 17, the negative electrode of the zener diode 17 is electrically connected to the power supply voltage terminal;

[0111] The capacitor 18, one plate of the capacitor 18 is electrically connected to the positive electrode of the zener diode 17, and the other plate of the capacitor 18 is electrically connected to the input end of the first resistor 16.

[0112] The integrated chip 2 further includes a crystal oscillator circuit 19, the output end of the crystal oscillator circuit 19 is electrically connected to the second signal input end of the decoding subunit 10; the crystal oscillator circuit 19 provides a first oscillation to the decoding subunit 10, so that the decoding subunit 10 controls the excitation unit 20 according to the first oscillation;

[0113] The excitation unit 20, the input end of the excitation unit 20 is electrically connected to the second signal output end of the decoding subunit 10, and the output end of the excitation unit 20 is electrically connected to the input end of the eddy current sensor 1; the excitation unit 20 generates an excitation signal according to the control of the decoding subunit 10, so that the eddy current sensor 1 generates a second oscillation according to the excitation signal.

[0114] It can be understood that the crystal oscillator circuit 19 provides oscillation to the decoding subunit 10, enabling the decoding subunit 10 to control the excitation unit 20 to emit a high-frequency excitation signal. The eddy current sensor 1 receives the high-frequency excitation signal and starts to oscillate. At this time, the generator shaft rotates, and a three-phase magnetic induction signal with information can be generated. The information includes one or both of the engine position and speed. Of course, it is not limited to this; the filter 7 performs filtering processing on the three-phase magnetic induction signal, the amplifier 8 performs amplification processing on the filtered three-phase magnetic induction signal, and the signal extraction unit 5 extracts an effective signal from the amplified three-phase magnetic induction signal. The effective signal can be defined as a signal with a frequency lower than a threshold. Of course, it is not limited to this; the analog-to-digital conversion unit 9 converts the effective signal into a digital signal and transmits it to the decoding subunit 10; the decoding subunit 10 interprets and tracks the effective signal to generate position information in the form of a multi-bit counter; the pseudo-square wave simulation subunit 11 obtains the position information from the decoding subunit 10 and converts it into a pseudo-square wave signal, the serial peripheral interface 12 obtains the position information from the decoding subunit 10 and converts it into a serial peripheral interface signal. The serial peripheral interface signal can also be called an SPI signal. The digital-to-analog conversion subunit 13 obtains the position information from the decoding subunit 10 and converts it into a sin signal or a cos signal to simulate a resolver signal. The pseudo-square wave simulation subunit 11 obtains the position information from the decoding subunit 10 and converts it into a pseudo-square wave signal, including: the pseudo-square wave simulation subunit 11 periodically receives the position information in the form of a multi-bit counter, and in real time, it is transmitted to the gate of the transistor 15 through the second resistor 14, causing the transistor 15 to conduct periodically. A pseudo-square wave signal is periodically generated at the drain of the transistor 15 for output. In this embodiment, the generated pseudo-square wave signal is 58 50% square waves, with 2 square waves missing. Of course, it is not limited to this. During the process of the pseudo-square wave simulation subunit 11 converting the position information in the form of a multi-bit counter into a pseudo-square wave signal, the transistor 15 is used to amplify the voltage. The first resistor 16 is a pull-up resistor, the voltage stabilizing diode 17 protects the port voltage of the positive electrode connected to the power supply, and the capacitor 18 filters the power supply. To further protect the pseudo-square wave simulation subunit 11, the source of the transistor 15 and the positive electrode of the voltage stabilizing diode 17 are grounded.

[0115] Embodiment 4

[0116] Combined with Figure 3 , Figure 3 FIG.

[0117] The fuel engine 21 includes a cylinder 23, the generator 22 includes a rotor 24, one end of the generator rotating shaft 25 is connected to the cylinder 23, and the other end is connected to the rotor 24. The eddy current sensor 1 of the eddy current integrated circuit is fixed to the side wall of the generator rotating shaft 25.

[0118] The fuel engine 21 further includes a flywheel 26. The flywheel 26 is sleeved outside the generator rotating shaft 25 and fixedly connected to the generator rotating shaft 25. Along the extending direction of the generator rotating shaft 25, the projection of the flywheel 26 is circular, and the center line of the flywheel 26 coincides with the center line of the rotor 24.

[0119] Along the extending direction of the generator rotating shaft 25, the eddy current sensor 1 is located between the flywheel 26 and the rotor 24.

[0120] It can be understood that the cylinder 23 includes a cylinder assembly, a crankshaft, an ignition device, etc. Among them, the ignition device is controlled by the fuel engine processing unit 3 to form the stroke process of the fuel engine 21. The rotor 24 is a rotating body composed of permanent magnets. The rotor 24 is used in cooperation with the stator. The stator is composed of a coil iron core and can induce electromotive force. The generator rotating shaft 25 is a rigid body connecting the cylinder 23 and the rotor 24. The flywheel 26 is an inertial component of the internal combustion engine. The conventional flywheel 26 is provided with 60 tooth positions, 58 teeth are installed, and the remaining 2 positions are used as the origin. The crankshaft position sensor is installed on the teeth. However, the eddy current sensor 1 of the eddy current integrated circuit of the power system 100 provided by the present invention is fixed to the side wall of the generator rotating shaft 25, and there is no need to improve the flywheel 26, thus simplifying the structure. And the integrated chip 2 converts the magnetic induction signal into a serial peripheral interface signal, a pseudo-square wave signal and an analog resolver signal, realizing the conversion of the magnetic induction signal carrying information into various types of signals, facilitating other structures to obtain the information carried by the magnetic induction signal, and further simplifying the overall structure.

[0121] Embodiment 5

[0122] Based on the same idea, referring to Figure 4 , Figure 4 which is a schematic structural diagram of an extended-range new energy vehicle provided by the present invention, to illustrate an extended-range new energy vehicle 200 provided by the present invention, including the eddy current integrated circuit 000 described in any one of the above embodiments.

[0123] Through the above embodiments, it can be seen that the eddy current integrated circuit, the power system and the extended-range new energy vehicle provided by the present invention at least achieve the following beneficial effects:

[0124] In the eddy current integrated circuit, power system and range-extended new energy vehicle provided by the present utility model, the integrated chip is electrically connected to the eddy current sensor, fuel engine processing unit and motor controller processing unit respectively. The integrated chip converts the magnetic induction signal generated by detecting the rotation of the generator shaft by the eddy current sensor into a serial peripheral interface signal, a pseudo-square wave signal and an analog resolver signal, and sends the pseudo-square wave signal to the fuel engine processing unit, so that the fuel engine processing unit controls the ignition sequence of the fuel engine based on the pseudo-square wave signal, and sends the serial peripheral interface signal and the analog resolver signal to the motor controller processing unit, so that the motor controller processing unit controls the operation of the generator based on the serial peripheral interface signal and the analog resolver signal. The magnetic induction signal is generated by detecting the rotation of the generator shaft through the eddy current sensor. The eddy current sensor does not need to be specifically installed on the flywheel, so there is no need to improve the flywheel, thus simplifying the structure. The integrated chip converts the magnetic induction signal into a serial peripheral interface signal, a pseudo-square wave signal and an analog resolver signal, realizing the conversion of the magnetic induction signal carrying information into various types of signals, facilitating other structures to obtain the information carried by the magnetic induction signal, and further simplifying the overall structure.

[0125] Although some specific embodiments of the present utility model have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present utility model. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present utility model. The scope of the present utility model is defined by the appended claims.

Claims

1. An eddy current integrated circuit, characterized in that, Including: An eddy current sensor for detecting the rotation of the generator shaft of the power system and generating a magnetic induction signal; An integrated chip electrically connected to the eddy current sensor for converting the magnetic induction signal into a serial peripheral interface signal, a pseudo-square wave signal, and an analog resolver signal; The integrated chip is also electrically connected to the fuel engine processing unit and the motor controller processing unit of the power system respectively; The integrated chip sends the pseudo-square wave signal to the fuel engine processing unit so that the fuel engine processing unit controls the ignition sequence of the fuel engine based on the pseudo-square wave signal; The integrated chip sends the serial peripheral interface signal and the analog resolver signal to the motor controller processing unit so that the motor controller processing unit controls the operation of the generator based on the serial peripheral interface signal and the analog resolver signal.

2. The eddy current integrated circuit according to claim 1, wherein The integrated chip includes a signal extraction unit and a signal conversion unit; The input end of the signal extraction unit is electrically connected to the output end of the eddy current sensor for extracting an effective signal from the magnetic induction signal; The input end of the signal conversion unit is electrically connected to the output end of the signal extraction unit. The first output end of the signal conversion unit is electrically connected to the input end of the fuel engine processing unit. The second output end of the signal conversion unit is electrically connected to the motor controller processing unit. The third output end of the signal conversion unit is electrically connected to the motor controller processing unit; The signal conversion unit converts the effective signal into the serial peripheral interface signal, the pseudo-square wave signal, and the analog resolver signal; wherein, the first output end is used for outputting the pseudo-square wave signal, the second output end is used for outputting the serial peripheral interface signal, and the third output end is used for outputting the analog resolver signal.

3. The eddy current integrated circuit according to claim 2, wherein, The input end of the signal extraction unit is electrically connected to the output end of the eddy current sensor, including: The integrated chip further includes a filter and an amplifier connected to each other. The input end of the filter is electrically connected to the output end of the eddy current sensor. The output end of the filter is electrically connected to the input end of the amplifier. The output end of the amplifier is electrically connected to the input end of the signal extraction unit.

4. The eddy current integrated circuit according to claim 2, wherein The input end of the signal conversion unit is electrically connected to the output end of the signal extraction unit, including: The integrated chip further includes an analog-to-digital conversion unit. The input end of the analog-to-digital conversion unit is electrically connected to the output end of the signal extraction unit. The output end of the analog-to-digital conversion unit is electrically connected to the input end of the signal conversion unit; The analog-to-digital conversion unit converts the effective signal into a digital signal for the signal conversion unit to obtain.

5. The eddy current integrated circuit according to claim 4, characterized in that, The signal conversion unit includes: A decoding sub-unit. The first signal input end of the decoding sub-unit is electrically connected to the output end of the analog-to-digital conversion unit. The first signal output end of the decoding sub-unit is electrically connected to the input ends of a pseudo-square wave analog sub-unit, a serial peripheral interface, and a digital-to-analog conversion sub-unit respectively; the decoding sub-unit interprets the digital signal to generate position information; The output end of the pseudo-square wave simulation subunit is electrically connected to the first output end, and the pseudo-square wave simulation subunit converts the position information into the pseudo-square wave signal; The output end of the serial peripheral interface is electrically connected to the second output end, and the serial peripheral interface converts the position information into the serial peripheral interface signal; The output end of the digital-to-analog conversion subunit is electrically connected to the third output end, and the digital-to-analog conversion subunit converts the position information into the analog resolver signal.

6. The eddy current integrated circuit according to claim 5, wherein The pseudo-square wave simulation subunit includes: A second resistor, the input end of the second resistor is electrically connected to the first signal output end of the decoding subunit; A transistor, the gate of the transistor is electrically connected to the output end of the second resistor, the source of the transistor is electrically connected to the reference voltage signal terminal, and the drain of the transistor is electrically connected to the first output end; A first resistor, the output end of the first resistor is electrically connected to the drain of the transistor, and the input end of the first resistor is electrically connected to the power supply voltage terminal; A zener diode, the negative electrode of the zener diode is electrically connected to the power supply voltage terminal; A capacitor, one plate of the capacitor is electrically connected to the positive electrode of the zener diode, and the other plate of the capacitor is electrically connected to the input end of the first resistor.

7. The eddy current integrated circuit according to claim 5, wherein The integrated chip further includes: A crystal oscillator circuit, the output end of the crystal oscillator circuit is electrically connected to the second signal input end of the decoding subunit; the crystal oscillator circuit provides a first oscillation to the decoding subunit, so that the decoding subunit controls the excitation unit according to the first oscillation; The excitation unit, the input end of the excitation unit is electrically connected to the second signal output end of the decoding subunit, and the output end of the excitation unit is electrically connected to the input end of the eddy current sensor; the excitation unit generates an excitation signal according to the control of the decoding subunit, so that the eddy current sensor generates a second oscillation according to the excitation signal.

8. A power system, characterized in that, Including: A fuel engine, a generator and an eddy current integrated circuit, the eddy current integrated circuit is the eddy current integrated circuit according to any one of the above claims 1-7, wherein, The fuel engine includes a cylinder, the generator includes a rotor, one end of the generator shaft is connected to the cylinder, the other end is connected to the rotor, and the eddy current sensor of the eddy current integrated circuit is fixed on the side wall of the generator shaft.

9. The power system according to claim 8, characterized in that, The fuel engine further includes a flywheel, the flywheel is sleeved outside the generator shaft and fixedly connected to the generator shaft. Along the extending direction of the generator shaft, the projection of the flywheel is circular, and the center line of the flywheel coincides with the center line of the rotor; Along the extending direction of the generator shaft, the eddy current sensor is located between the flywheel and the rotor.

10. A range-extended new energy vehicle, characterized in that, Including the eddy current integrated circuit according to any one of the above claims 1-7.

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