Voltage-regulating pulse power supply circuit, circuit board, electronic control unit, device and vehicle

Abstract

The utility model provides a voltage-regulating pulse power supply circuit, a circuit board, an electronic control unit, a device and a vehicle. Wherein the voltage regulation pulse power supply circuit processes input alternating current through the full-bridge uncontrolled rectification circuit, the voltage regulation circuit and the pulse conversion circuit which are connected in sequence, and then outputs adjustable positive and negative pulses; wherein the full-bridge uncontrolled rectifying circuit can convert an alternating-current electric signal into a direct-current electric signal; the voltage regulation circuit is used for carrying out voltage regulation on the direct-current voltage output by the full-bridge uncontrolled rectification circuit to generate direct-current voltage with constant amplitude; the direct-current voltage is converted into a pulse signal with a constant frequency through the pulse conversion circuit, and stable pulse voltage is provided for bearing service life testing.

Description

Technical Field

[0001] The utility model belongs to the technical field of automatic control, and in particular relates to a voltage-regulated pulse power supply circuit, a circuit board, an electronic control unit, a device and a vehicle. Background Art

[0002] The high-frequency common-mode voltage output by the pulse power supply acts on the parasitic capacitance inside the motor to generate bearing current. This current can cause electrical corrosion of the bearing and lead to premature failure, resulting in economic losses and also bringing great safety hazards.

[0003] Bearing voltage is essentially a series of high du / dt square-wave voltage pulses. When the motor is operating, the bearing is equivalent to a small capacitor. When the bearing voltage is less than the oil film breakdown threshold, the bearing will generate a corresponding capacitive dv / dt bearing current. The magnitude of the bearing current is strongly correlated with the du / dt of the bearing voltage. When the bearing voltage exceeds the withstand voltage of the oil film inside the bearing, the lubricating grease is broken down, generating an EMD (Electrical Discharge Machining) discharge current. The current pulse creates very high local temperatures, causing the roller and raceway metal to melt, forming craters. The rough raceway contacts the roller, increasing heat and friction within the bearing. Over time, the bearing raceway develops grooves or washboard marks, shortening the bearing's service life.

[0004] Bearing life testing requires testing whether the protective oil film on the bearing is broken down under pulse signals of different frequencies. How to output a stable and adjustable pulse voltage is the key. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a voltage-regulated pulse power supply circuit, a circuit board, an electronic control unit, a device and a vehicle to output a stable and adjustable pulse voltage.

[0006] In a first aspect, the utility model provides a voltage-regulated pulse power supply circuit, comprising a full-bridge uncontrolled rectifier circuit, a voltage regulating circuit, and a pulse conversion circuit connected in sequence;

[0007] The full-bridge uncontrolled rectifier circuit includes a rectifier circuit composed of a first diode, a second diode, a third diode, and a fourth diode, and a filter circuit composed of a first resistor and a first capacitor;

[0008] The voltage regulating circuit includes an H-bridge voltage regulating circuit consisting of a first N-channel MOS transistor, a second N-channel MOS transistor, a third N-channel MOS transistor, a fourth N-channel MOS transistor, a first inductor, a second capacitor and a second resistor;

[0009] The pulse conversion circuit includes a Buck frequency modulation circuit composed of a fifth N-channel MOS tube, a fifth diode, a second inductor, a third capacitor, and a third resistor.

[0010] Preferably, in the rectifier circuit, the live wire and the neutral wire on the AC single-phase input side are respectively connected to the anode of the first diode and the cathode of the fourth diode, the first diode and the third diode are connected in series, and then connected in series with the second diode and the fourth diode and then in parallel; the DC side of the rectifier circuit is connected to a filter circuit composed of a first resistor and a first capacitor.

[0011] Preferably, in the filter circuit, one end of the first resistor is connected to the cathode end of the second diode, and two ends of the first capacitor are respectively connected to the other end of the resistor and the anode end of the fourth diode.

[0012] Preferably, in the voltage regulating circuit, the output end of the first inductor is respectively connected to the drain of the first N-channel MOS transistor and the source of the third N-channel MOS transistor; the first N-channel MOS transistor and the third N-channel MOS transistor are connected in series, and then connected in series with the second N-channel MOS transistor and the fourth N-channel MOS transistor, and then connected in parallel; the midpoint of the two series circuits is respectively connected to one end of the first inductor and one end of the second capacitor; the two ends of the second resistor are respectively connected to one end of the first inductor and one end of the second capacitor; and the other end of the first inductor is connected to the other end of the second capacitor.

[0013] Preferably, in the pulse conversion circuit, the drain of the fifth N-channel MOS transistor is connected to the other end of the second capacitor, the source of the fifth N-channel MOS transistor is respectively connected to the cathode of the fifth diode and one end of the second inductor, the other end of the second inductor is respectively connected to one end of the third capacitor and one end of the third resistor, and the anode of the fifth diode is respectively connected to one end of the second capacitor, the other end of the third capacitor, and the other end of the third resistor.

[0014] Preferably, the gates of the first N-channel MOS transistor, the second N-channel MOS transistor, the third N-channel MOS transistor, the fourth N-channel MOS transistor, and the fifth N-channel MOS transistor are respectively connected to the first output pin, the second output pin, the third output pin, the fourth output pin, and the fifth output pin of the controller.

[0015] In a second aspect, the present invention further provides a circuit board comprising the above-mentioned voltage-regulated pulse power supply circuit.

[0016] In a third aspect, the present invention further provides an electronic control unit comprising the above-mentioned circuit board.

[0017] In a fourth aspect, the present invention further provides a device comprising the above-mentioned electronic control unit.

[0018] In a fifth aspect, the present invention provides a vehicle comprising the above-mentioned device.

[0019] The beneficial effects of the utility model are:

[0020] The utility model processes the input alternating current through a full-bridge uncontrolled rectifier circuit, a voltage regulating circuit and a pulse conversion circuit connected in sequence, and outputs adjustable positive and negative pulses; wherein, the full-bridge uncontrolled rectifier circuit can convert the alternating current signal into a direct current signal; the voltage regulating circuit adjusts the DC voltage output by the full-bridge uncontrolled rectifier circuit to generate a DC voltage of constant amplitude; the pulse conversion circuit converts the DC voltage into a pulse signal of constant frequency, thereby providing a stable pulse voltage for bearing life testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a connection diagram of the voltage-regulated pulse power supply circuit in the utility model;

[0022] Figure 2 This is the circuit principle diagram of the voltage-regulated pulse power supply circuit in this utility model. DETAILED DESCRIPTION

[0023] like Figure 1 As shown, the voltage-regulated pulse power supply circuit provided by the present invention includes a full-bridge uncontrolled rectifier circuit 101, a voltage regulating circuit 102 and a pulse conversion circuit 103 connected in sequence.

[0024] The following describes each circuit in the voltage-regulated pulse power supply circuit.

[0025] like Figure 2 As shown, the full-bridge uncontrolled rectifier circuit 201 includes a rectifier circuit consisting of a first diode D1, a second diode D2, a third diode D3, and a fourth diode D4, and a filter circuit consisting of a first resistor R1 and a first capacitor C1. In the rectifier circuit, the live wire and the neutral wire on the AC single-phase input side are connected to the anode of the first diode D1 and the cathode of the fourth diode D4, respectively. The first diode D1 and the third diode D3 are connected in series, and then connected in series with the second diode D2 and the fourth diode D4, and then connected in parallel. The DC side of the rectifier circuit is connected to the filter circuit consisting of the first resistor R1 and the first capacitor C1. In the filter circuit, one end of the first resistor R1 is connected to the cathode end of the second diode D2, and the two ends of the first capacitor C1 are connected to the other end of the first resistor R1 and the anode end of the fourth diode D4, respectively.

[0026] like Figure 2As shown, the voltage regulating circuit 202 includes an H-bridge voltage regulating circuit consisting of a first N-channel MOS transistor N1, a second N-channel MOS transistor N2, a third N-channel MOS transistor N3, a fourth N-channel MOS transistor N4, a first inductor L1, a second capacitor C2 and a second resistor R2. The output end of the first inductor L1 is connected to the drain of the first N-channel MOS transistor N1 and the source of the third N-channel MOS transistor N3, respectively. The first N-channel MOS transistor N1 and the third N-channel MOS transistor N3 are connected in series, then connected in series with the second N-channel MOS transistor N2 and the fourth N-channel MOS transistor N4, and then connected in parallel. The midpoint of the two series circuits is connected to one end of the first inductor L1 and one end of the second capacitor C2, respectively. The two ends of the second resistor R2 are connected to one end of the first inductor L1 and one end of the second capacitor C2, respectively. The other end of the first inductor L1 is connected to the other end of the second capacitor C2. The gates of the first N-channel MOS transistor N1, the second N-channel MOS transistor N2, the third N-channel MOS transistor N3, and the fourth N-channel MOS transistor N4 are connected to the first output pin F1, the second output pin F2, the third output pin F3, and the fourth output pin F4 of the external controller, respectively.

[0027] like Figure 2 As shown, the pulse conversion circuit 203 includes a buck frequency modulation circuit consisting of a fifth N-channel MOS transistor N5, a fifth diode D5, a second inductor L2, a third capacitor C3, and a third resistor R3. In the pulse conversion circuit, the drain of the fifth N-channel MOS transistor N5 is connected to the other end of the second capacitor, the source of the fifth N-channel MOS transistor N5 is respectively connected to the cathode of the fifth diode D5 and one end of the second inductor L2, the other end of the second inductor L2 is respectively connected to one end of the third capacitor C3 and one end of the third resistor R3, and the anode of the fifth diode D5 is respectively connected to one end of the second capacitor, the other end of the third capacitor C3, and the other end of the third resistor R3. The gate of the fifth N-channel MOS transistor N5 is connected to the fifth output pin F5 of the external controller.

[0028] The utility model processes the input alternating current through a full-bridge uncontrolled rectifier circuit, a voltage regulating circuit and a pulse conversion circuit connected in sequence, and outputs adjustable positive and negative pulses; wherein, the full-bridge uncontrolled rectifier circuit can convert the alternating current signal into a direct current signal; the voltage regulating circuit adjusts the DC voltage output by the full-bridge uncontrolled rectifier circuit to generate a DC voltage of constant amplitude; the pulse conversion circuit converts the DC voltage into a pulse signal of constant frequency, thereby providing a stable pulse voltage for bearing life testing.

[0029] On the other hand, the present invention also provides a circuit board, which may include the above-mentioned Figure 2 Voltage regulated pulse power supply circuit.

[0030] On the other hand, an embodiment of the present invention further provides an electronic control unit, which includes the circuit board described in the above technical solution.

[0031] On the other hand, an embodiment of the present invention further provides a device comprising the above-mentioned electronic control unit.

[0032] On the other hand, an embodiment of the present invention further provides a vehicle, which includes the device described in the above technical solution.

[0033] The beneficial effects of the circuit board, electronic control unit, device and vehicle are the same as those of the voltage-regulated pulse power supply circuit, and will not be repeated here.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0035] The one or more embodiments of this application are intended to encompass all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this application should be included in the scope of protection of this application.

Claims

1. A voltage-regulated pulse power supply circuit, characterized in that: It includes a full-bridge uncontrolled rectifier circuit, a voltage regulating circuit and a pulse conversion circuit connected in sequence; The full-bridge uncontrolled rectifier circuit includes a rectifier circuit composed of a first diode, a second diode, a third diode, and a fourth diode, and a filter circuit composed of a first resistor and a first capacitor; The voltage regulating circuit includes an H-bridge voltage regulating circuit consisting of a first N-channel MOS transistor, a second N-channel MOS transistor, a third N-channel MOS transistor, a fourth N-channel MOS transistor, a first inductor, a second capacitor and a second resistor; The pulse conversion circuit includes a Buck frequency modulation circuit composed of a fifth N-channel MOS transistor, a fifth diode, a second inductor, a third capacitor, and a third resistor.

2. The voltage-regulated pulse power supply circuit according to claim 1, characterized in that: In the rectifier circuit, the live wire and the neutral wire on the AC single-phase input side are respectively connected to the anode of the first diode and the cathode of the fourth diode. The first diode and the third diode are connected in series, and then connected in parallel with the second diode and the fourth diode. The DC side of the rectifier circuit is connected to the filter circuit composed of the first resistor and the first capacitor.

3. The voltage-regulated pulse power supply circuit according to claim 2, characterized in that: In the filtering circuit, one end of the first resistor is connected to the cathode end of the second diode, and two ends of the first capacitor are respectively connected to the other end of the resistor and the anode end of the fourth diode.

4. The voltage-regulated pulse power supply circuit according to claim 3, characterized in that: In the voltage regulating circuit, the output end of the first inductor is respectively connected to the drain of the first N-channel MOS transistor and the source of the third N-channel MOS transistor; the first N-channel MOS transistor and the third N-channel MOS transistor are connected in series, then connected in series with the second N-channel MOS transistor and the fourth N-channel MOS transistor, and then connected in parallel; the midpoint of the two series circuits is respectively connected to one end of the first inductor and one end of the second capacitor; the two ends of the second resistor are respectively connected to one end of the first inductor and one end of the second capacitor; and the other end of the first inductor is connected to the other end of the second capacitor.

5. The voltage-regulated pulse power supply circuit according to claim 4, characterized in that: In the pulse conversion circuit, the drain of the fifth N-channel MOS transistor is connected to the other end of the second capacitor, the source of the fifth N-channel MOS transistor is respectively connected to the cathode of the fifth diode and one end of the second inductor, the other end of the second inductor is respectively connected to one end of the third capacitor and one end of the third resistor, and the anode of the fifth diode is respectively connected to one end of the second capacitor, the other end of the third capacitor, and the other end of the third resistor.

6. The voltage-regulated pulse power supply circuit according to claim 5, characterized in that: The gates of the first N-channel MOS transistor, the second N-channel MOS transistor, the third N-channel MOS transistor, the fourth N-channel MOS transistor, and the fifth N-channel MOS transistor are respectively connected to the first output pin, the second output pin, the third output pin, the fourth output pin, and the fifth output pin of the controller.

7. A circuit board, characterized in that: The invention comprises a voltage-regulated pulse power supply circuit as claimed in any one of claims 1 to 6.

8. An electronic control unit, characterized in that: Comprising the circuit board as claimed in claim 7.

9. A device, characterized in that: Comprising the electronic control unit as claimed in claim 8.

10. A vehicle, characterized in that: Comprising the apparatus as claimed in claim 9.

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