High-pressure winch based on weak magnetic control

Abstract

The invention provides a high-pressure capstan based on weak magnetic control. The high-pressure capstan comprises a capstan body; the power output end of the winch motor is in transmission connection with the power input end of the winch body; the power supply input end of the driving module is connected with the power supply output end of the high-voltage power supply, and the power supply output end of the driving module is connected with the power supply input end of the winch motor; and the control module is used for controlling the flux weakening current of the capstan motor by using the driving module until the rotating speed of the capstan motor reaches the target rotating speed when the voltage of the capstan motor reaches the output voltage of the high-voltage power supply and the rotating speed of the capstan motor does not reach the target rotating speed. According to the high-voltage winch based on field weakening control, by means of field weakening control of the winch motor, the winch motor can achieve the high target rotating speed under the limited input voltage, and therefore the rope winding requirement of the high-voltage winch is met.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of winch, in particular to a high-voltage winch based on field weakening control. BACKGROUND

[0002] Winch is a mechanical device that uses a drum to wind a rope or cable to pull, lift or move heavy objects, and is widely used in engineering, navigation, off-road, rescue and other fields. Winch works in two states, the rope collecting state with high speed requirement and low torque requirement, and the load pulling state with low speed requirement and high torque requirement.

[0003] For the rope collecting state with high speed requirement, the speed of the winch motor needs to run to about 7000 rpm, but due to the limited input voltage of the vehicle carrier and different input voltages of different carriers, the speed of the winch motor is difficult to increase to the target speed, which cannot meet the winch's rope collecting requirement. SUMMARY

[0004] The present disclosure aims to at least solve one of the technical problems in the related art to some extent.

[0005] To this end, the purpose of the present disclosure is to provide a high-voltage winch based on field weakening control.

[0006] To achieve the above purpose, the present disclosure provides a high-voltage winch based on field weakening control, comprising: a winch body; a winch motor, the power output end of the winch motor and the power input end of the winch body are drivingly connected; a drive module, the power input end of the drive module and the power output end of the high-voltage power supply are connected, and the power output end of the drive module and the power input end of the winch motor are connected; a control module, the signal output end of the control module and the signal input end of the drive module are connected, and the control module is used to control the voltage of the winch motor by the drive module, so that the speed of the winch motor reaches the target speed, and when the voltage of the winch motor reaches the output voltage of the high-voltage power supply and the speed of the winch motor does not reach the target speed, the control module is also used to control the field weakening current of the winch motor by the drive module until the speed of the winch motor reaches the target speed.

[0007] Optionally, the high-voltage winch further comprises: a first acquisition module, the first acquisition module is used to acquire the running current of the winch motor; wherein the signal input end of the control module and the signal output end of the first acquisition module are connected, and the control module is used to increase the voltage of the winch motor by the drive module when the preset current is greater than the running current until the voltage of the winch motor reaches the output voltage of the high-voltage power supply.

[0008] Optionally, the high-voltage winch further comprises a second acquisition module, the second acquisition module being configured to acquire a running speed of the winch motor; wherein a signal input end of the control module is connected with a signal output end of the second acquisition module, and the control module is configured to control a voltage of the winch motor according to the running speed, and control a field weakening current of the winch motor according to the running speed, until the running speed of the winch motor reaches the target speed.

[0009] Optionally, the control module is further configured to fit a speed-torque mapping relationship of the winch motor according to a series motor characteristic, and control a torque of the winch motor based on the fitted speed-torque mapping relationship and according to the speed of the winch motor.

[0010] Optionally, the high-voltage winch further comprises a boost module, the boost module comprising: a first charge-discharge unit and a boost chip, a power input end of the first charge-discharge unit being connected with a power output end of a low-voltage power supply, and a control output end of the boost chip being connected with a control input end of the first charge-discharge unit, the boost chip being configured to control charge-discharge of the first charge-discharge unit, so that a voltage of a power output end of the first charge-discharge unit is not less than a fifth voltage; and a buck module, the buck module comprising: a second charge-discharge unit and a buck chip, a power input end of the second charge-discharge unit being connected with a power output end of the first charge-discharge unit, and a control output end of the buck chip being connected with a control input end of the second charge-discharge unit, the buck chip being configured to control charge-discharge of the second charge-discharge unit, so that a voltage of a power output end of the second charge-discharge unit is not greater than a first voltage; wherein the first voltage is less than the fifth voltage, and a power input end of the control module is connected with the power output end of the second charge-discharge unit.

[0011] Optionally, the high-voltage winch further comprises: a first conversion module, a power input end of the first conversion module is connected with a power output end of the high-voltage power supply, and the first conversion module is used for converting a power supply voltage of the power output end of the high-voltage power supply to output a first voltage at a first power output end and output a second voltage at a second power output end; a second conversion module, a power input end of the second conversion module is connected with the second power output end of the first conversion module, and the second conversion module is used for converting the second voltage of the second power output end of the first conversion module to output a third voltage at a power output end; a third conversion module, a power input end of the third conversion module is connected with the second power output end of the first conversion module, and the third conversion module is used for converting the second voltage of the second power output end of the first conversion module to output the third voltage and a fourth voltage at the first power output end, the second power output end and the third power output end respectively; wherein the first power output end of the first conversion module is connected with a power input end of the control module; the power output end of the second conversion module is connected with a first power input end of the driving module; the first power output end, the second power output end and the third power output end of the third conversion module are connected with the first power input end and a second power input end of the driving module respectively.

[0012] Optionally, the first conversion module comprises: a first transformer, a first switch unit, a first rectifier unit, a second rectifier unit and a first control unit; wherein a first end of a primary winding of the first transformer is connected with a power output end of the high-voltage power supply, and the first switch unit is connected in series between a second end of the primary winding of the first transformer and the ground; a power input end of the first rectifier unit is connected with a first secondary winding of the first transformer, a power output end of the first rectifier unit is connected with a power input end of the control module; a power input end of the second rectifier unit is connected with a second secondary winding of the first transformer, a power output end of the second rectifier unit is connected with a power input end of the second conversion module and a power input end of the third conversion module respectively; a power input end of the first control unit is connected with a third secondary winding of the first transformer, and a control output end of the first control unit is connected with a control input end of the first switch unit, the first control unit is used for controlling on-off of the first switch unit, so that the power output end of the first rectifier unit outputs the first voltage as the first power output end of the first conversion module, and the power output end of the second rectifier unit outputs the second voltage as the second power output end of the first conversion module.

[0013] Optionally, the first switch unit comprises a first MOS tube, the first MOS tube is N type, a drain of the first MOS tube is connected with a second end of a primary side winding of the first transformer, and a source of the first MOS tube is grounded; the first control unit comprises a first control chip, a seventh resistor, an eighth resistor and a tenth capacitor; wherein a power input pin of the first control chip is used as a power input end of the first control unit and is connected with a first end of a third secondary side winding of the first transformer, a second end of the third secondary side winding of the first transformer is grounded; a first end of the seventh resistor is connected with a driving output pin of the first control chip, a second end of the seventh resistor is used as a control output end of the first control unit and is connected with a gate of the first MOS tube; a first end of the eighth resistor is connected with a reference voltage output pin of the first control chip, a second end of the eighth resistor is connected with an oscillator timing resistor-capacitor pin of the first control chip; a first end of the tenth capacitor is connected with the second end of the eighth resistor, and a second end of the tenth capacitor is grounded.

[0014] Optionally, the third conversion module comprises a second transformer, a second switch unit, a third rectifier unit, a fourth rectifier unit, a fifth rectifier unit and a second control unit; wherein a first end of a primary winding of the second transformer is connected with the second power output end of the first conversion module, and the second switch unit is connected in series between a second end of the primary winding of the second transformer and the ground; a power input end of the third rectifier unit is connected with a first secondary winding of the second transformer, a first power output end of the third rectifier unit is connected with the first power input end of the driving module, and a second power output end of the third rectifier unit is connected with the second power input end of the driving module; a power input end of the fourth rectifier unit is connected with a second secondary winding of the first transformer, a first power output end of the fourth rectifier unit is connected with the first power input end of the driving module, and a second power output end of the fourth rectifier unit is connected with the second power input end of the driving module; a power input end of the fifth rectifier unit is connected with a third secondary winding of the second transformer, a first power output end of the fifth rectifier unit is connected with the first power input end of the driving module, and a second power output end of the fifth rectifier unit is connected with the second power input end of the driving module; a power input end of the second control unit is connected with the second power output end of the first conversion module, a control output end of the second control unit is connected with a control input end of the second switch unit, and the second control unit is used for controlling the on-off of the second switch unit, so that the first power output ends of the third rectifier unit, the fourth rectifier unit and the fifth rectifier unit output the third voltage respectively, and the second power output ends of the third rectifier unit, the fourth rectifier unit and the fifth rectifier unit output the fourth voltage respectively.

[0015] Optionally, the second switch unit comprises a second MOS tube, the second MOS tube is N type, and the drain of the second MOS tube is connected with the second end of the primary side winding of the second transformer, and the source of the second MOS tube is grounded; the second control unit comprises a second control chip, a twenty-fifth resistor, a twenty-sixth resistor and a thirtieth capacitor; wherein the power input pin of the second control chip is used as the power input end of the second control unit and is connected with the second power output end of the first conversion module; the first end of the twenty-fifth resistor is connected with the drive output pin of the second control chip, and the second end of the twenty-fifth resistor is used as the control output end of the second control unit and is connected with the gate of the second MOS tube; the first end of the twenty-sixth resistor is connected with the reference voltage output pin of the second control chip, and the second end of the twenty-sixth resistor is connected with the oscillator timing resistor capacitor pin of the second control chip; the first end of the thirtieth capacitor is connected with the second end of the twenty-sixth resistor, and the second end of the thirtieth capacitor is grounded.

[0016] The technical solutions provided by the present disclosure can include the following beneficial effects:

[0017] The control module first controls the voltage of the winch motor to reach the output voltage of the high-voltage power supply by using the driving module, and then controls the field weakening current of the winch motor by using the driving module until the rotating speed of the winch motor reaches the target rotating speed. In this way, the winch motor can achieve a higher target rotating speed under limited input voltage by using the field weakening control of the winch motor, thereby meeting the requirements of the high-voltage winch for rope winding.

[0018] Additional aspects and advantages of the present disclosure will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily appreciated from the following description of embodiments, taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 is a circuit schematic diagram of a high-voltage winch based on field weakening control according to an embodiment of the present disclosure;

[0021] Figure 2 is a circuit schematic diagram of a boost module in a high-voltage winch based on field weakening control according to an embodiment of the present disclosure;

[0022] Figure 3 is a circuit schematic diagram of a buck module in a high-voltage winch based on field weakening control according to an embodiment of the present disclosure;

[0023] Figure 4Is the circuit schematic diagram of the first conversion module in the high-voltage winch based on the field weakening control proposed by an embodiment of the disclosure.

[0024] Figure 5 Is the circuit schematic diagram of the third conversion module in the high-voltage winch based on the field weakening control proposed by an embodiment of the disclosure.

[0025] Figure 6 Is the circuit schematic diagram of the third rectifier unit in the high-voltage winch based on the field weakening control proposed by an embodiment of the disclosure.

[0026] Figure 7 Is the circuit schematic diagram of the second conversion module in the high-voltage winch based on the field weakening control proposed by an embodiment of the disclosure.

[0027] As shown in the figure: 1, control module, 2, drive module, 3, winch motor, 4, winch body, 5, first acquisition module, 6, second acquisition module, 7, boost module, 8, buck module;

[0028] 9, first conversion module, 901, first switch unit, 902, first rectifier unit, 903, second rectifier unit, 904, first control unit, 905, starting unit;

[0029] 10, second conversion module;

[0030] 11, third conversion module, 111, second switch unit, 112, third rectifier unit, 113, second control unit;

[0031] L1, first inductor, L2, second inductor, L3, third inductor, L4, fourth inductor, L5, fifth inductor;

[0032] R1, first resistor, R2, second resistor, R3, third resistor, R4, fourth resistor, R5, fifth resistor, R6, sixth resistor, R7, seventh resistor, R8, eighth resistor, R9, ninth resistor, R10, tenth resistor, R11, eleventh resistor, R12, twelfth resistor, R13, thirteenth resistor, R14, fourteenth resistor, R15, fifteenth resistor, R16, sixteenth resistor, R17, seventeenth resistor, R18, eighteenth resistor, R19, nineteenth resistor, R20, twentieth resistor, R21, twenty-first resistor, R22, twenty-second resistor, R23, twenty-third resistor, R24, twenty-fourth resistor, R25, twenty-fifth resistor, R26, twenty-sixth resistor, R27, twenty-seventh resistor, R28, twenty-eighth resistor, R29, twenty-ninth resistor, R30, thirtieth resistor, R31, thirty-first resistor, R32, thirty-second resistor, R33, thirty-third resistor, R34, thirty-fourth resistor, R35, thirty-fifth resistor, R36, thirty-sixth resistor, R37, thirty-seventh resistor, R38, thirty-eighth resistor;

[0033] C1, first capacitor, C2, second capacitor, C3, third capacitor, C4, fourth capacitor, C5, fifth capacitor, C6, sixth capacitor, C7, seventh capacitor, C8, eighth capacitor, C9, ninth capacitor, C10, tenth capacitor, C11, eleventh capacitor, C12, twelfth capacitor, C13, thirteenth capacitor, C14, fourteenth capacitor, C15, fifteenth capacitor, C16, sixteenth capacitor, C17, seventeenth capacitor, C18, eighteenth capacitor, C19, nineteenth capacitor, C20, twentieth capacitor, C21, twenty-first capacitor, C22, twenty-second capacitor, C23, twenty-third capacitor, C24, twenty-fourth capacitor, C25, twenty-fifth capacitor, C26, twenty-sixth capacitor, C27, twenty-seventh capacitor, C28, twenty-eighth capacitor, C29, twenty-ninth capacitor, C30, thirtieth capacitor, C31, thirty-first capacitor, C32, thirty-second capacitor, C33, thirty-third capacitor, C34, thirty-fourth capacitor, C35, thirty-fifth capacitor, C36, thirty-sixth capacitor, C37, thirty-seventh capacitor, C38, thirty-eighth capacitor, C39, thirty-ninth capacitor, C40, fortieth capacitor, C41, forty-first capacitor, C42, forty-second capacitor, C43, forty-third capacitor;

[0034] D1, first diode, D2, second diode, D3, third diode, D4, fourth diode, D5, fifth diode, D6, sixth diode, D7, seventh diode, D8, eighth diode, D9, ninth diode, D10, twelfth diode, D11, eleventh diode, D12, tenth diode, D13, thirteenth diode, D14, fourteenth diode, D15, fifteenth diode, D16, sixteenth diode;

[0035] U1, boost chip, U2, buck chip, U3, first control chip, U4, first voltage stabilizing chip, U5, second control chip, U6, second voltage stabilizing chip, U7, third control chip;

[0036] T1, first transformer, T2, second transformer;

[0037] Q1, first MOS tube, Q2, second MOS tube, Q3, triode;

[0038] P1, optocoupler. DETAILED DESCRIPTION

[0039] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure and cannot be understood as a limitation of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0040] As shown in Figure 1 The embodiment of the present disclosure proposes a high-voltage winch based on field weakening control, comprising: a winch body 4, a winch motor 3, a driving module 2 and a control module 1, the power output end of the winch motor 3 and the power input end of the winch body 4 are transmission connected, the power input end of the driving module 2 and the power output end of the high-voltage power supply are connected, and the power output end of the driving module 2 and the power input end of the winch motor 3 are connected, the signal output end of the control module 1 and the signal input end of the driving module 2 are connected, and the control module 1 is used to control the voltage of the winch motor 3 by the driving module 2, so that the speed of the winch motor 3 reaches the target speed, and when the voltage of the winch motor 3 reaches the output voltage of the high-voltage power supply, and the speed of the winch motor 3 does not reach the target speed, the control module 1 is also used to control the field weakening current of the winch motor 3 by the driving module 2 until the speed of the winch motor 3 reaches the target speed.

[0041] It can be understood that, since the power output end of the winch motor 3 and the power input end of the winch body 4 are drivingly connected, the power input end of the driving module 2 and the power output end of the high-voltage power supply are connected, and the power output end of the driving module 2 and the power input end of the winch motor 3 are connected, and the signal output end of the control module 1 and the signal input end of the driving module 2 are connected, so that the control module 1 can control the operation of the winch motor 3 by using the driving module 2.

[0042] Specifically, the control module 1 controls the driving module 2 according to the preset target speed to adjust the voltage of the winch motor 3, so that the speed of the winch motor 3 reaches the target speed. However, when the target speed is too high, the voltage of the power output end of the high-voltage power supply is limited, so that the speed of the winch motor 3 is difficult to reach the target speed by using only the voltage adjustment. Therefore, the control module 1 first controls the voltage of the winch motor 3 to reach the output voltage of the high-voltage power supply by using the driving module 2, and then controls the field weakening current of the winch motor 3 by using the driving module 2 until the speed of the winch motor 3 reaches the target speed. Thus, by using the field weakening control of the winch motor 3, the winch motor 3 can achieve a higher target speed under a limited input voltage, thereby meeting the requirements of the high-voltage winch for winding.

[0043] It should be noted that the idea of field weakening control of the permanent magnet synchronous motor comes from the field control of the separately excited DC motor. When the terminal voltage of the separately excited DC motor reaches the maximum value, it cannot be further increased by voltage regulation and speed regulation. Only by reducing the excitation current of the motor can the excitation flux be reduced, so that the motor speed can be increased above the rated speed under the condition of ensuring voltage balance.

[0044] Under the rated condition, the armature voltage of the permanent magnet synchronous motor increases with the increase of the motor speed, and the spatial rotation speed of the armature reaction magnetic field also continuously increases. When the armature voltage reaches the limit value, the motor speed is limited and cannot be further increased. To continue to increase the speed, the back electromotive force in the motor cannot exceed the rated value. The back electromotive force is proportional to the product of the air gap flux in the motor. To keep the product of the speed and the flux unchanged, only the air gap flux can be reduced to ensure that the speed can be increased. This is the basic principle of field weakening control.

[0045] To reduce the air gap flux and keep the back electromotive force unchanged, the demagnetizing effect of the direct-axis armature current can be used to weaken the excitation flux of the rotor. Simply speaking, a part of the current in the coil is used to offset the magnetic field of the rotor, so that the induced electromotive force in the coil is reduced. Thus, under the same voltage, the speed of the motor after field weakening control can continue to increase.

[0046] The winch body 4 works in two states, a winding state with high speed requirement and low torque requirement, and a load pulling state with low speed requirement and high torque requirement.

[0047] Specifically, the rope collecting state: the speed of the winch motor 3 needs to run to about 7000 rpm, so that the rope drum can quickly collect the rope, but the motor torque output is very small in this state, and it is almost in a state of no power output; the load pulling state: the motor speed is in the range of 2000 rpm-4000 rpm, and the output torque is relatively large.

[0048] Based on the field weakening control mode of the embodiment, the winch motor 3 can achieve a higher target speed under limited input voltage. Meanwhile, for different voltage inputs, the control module 1 uses the adaptive field weakening algorithm of the embodiment to automatically adjust the field weakening current of the winch motor 3 when it is under no load, so as to achieve the target speed under no load.

[0049] For example, when the input voltage of the high-voltage power supply is 285V, the normal maximum speed of the winch motor 3 is about 2850 rpm. When there is no external load, the speed of the winch motor 3 will always rotate to 2850 rpm. At this time, the control module 1 obtains the sampling voltage of the winch motor 3 as 285V.

[0050] Since the induced electromotive force of the winch motor 3 has been consistent with the input voltage after the speed is increased, the current in the coil cannot be increased. The difference between the torque current set in the control module 1 and the feedback current will increase, which will cause the output voltage of the internal regulator of the control module 1 to be adjusted to the maximum value. In this state, the speed after the adjustment still does not reach the set target speed (for example, 7000 rpm). Therefore, the control module 1 increases the set value of the field weakening current until the field weakening current is adjusted to the maximum set value.

[0051] Through such an adaptive control mode, the winch motor 3 can automatically adjust the field weakening current under different voltage inputs in the no-load state, so as to achieve the purpose of finally reaching the target speed.

[0052] The high-voltage winch can be applied to different fields, and no limitation is made in this regard. For example, the high-voltage winch is applied to a new energy vehicle, and the high-voltage power supply is a power battery of the vehicle.

[0053] The winch motor 3 is used to drive the winch body 4. The specific type of the winch motor 3 can be set according to actual needs, and no limitation is made in this regard. For example, the winch motor 3 can be a permanent magnet synchronous motor.

[0054] The driving module 2 is used to drive the winch motor 3. The specific type of the driving module 2 can be set according to actual needs, and no limitation is made in this regard. For example, the driving module 2 includes an IGBT module and other devices.

[0055] The control module 1 is configured to control the driving module 2 to adjust the operating voltage or the field weakening current of the winch motor 3. The specific type of the control module 1 can be set according to actual needs, and the control module 1 can be a controller, for example.

[0056] Based on the input voltage of different carriers, the high-voltage winch can realize wide high-voltage input to be suitable for different high-voltage power supplies, and the devices in the high-voltage winch are all designed according to the highest voltage.

[0057] As shown in Figure 1 some embodiments, the high-voltage winch further comprises a first acquisition module 5 configured to acquire the operating current of the winch motor 3. The signal input end of the control module 1 is connected to the signal output end of the first acquisition module 5, and the control module 1 is configured to increase the voltage of the winch motor 3 by using the driving module 2 when the preset current is greater than the operating current, until the voltage of the winch motor 3 reaches the output voltage of the high-voltage power supply.

[0058] It can be understood that, since the signal input end of the control module 1 is connected to the signal output end of the first acquisition module 5, the control module 1 can acquire the operating current of the winch motor 3 by using the first acquisition module 5, and when the preset current is greater than the operating current, the control module 1 increases the voltage of the winch motor 3 by using the driving module 2, until the voltage of the winch motor 3 reaches the output voltage of the high-voltage power supply, so that the rotational speed of the winch motor 3 can reach the maximum rotational speed by using the voltage speed regulation mode, and when the maximum rotational speed of the winch motor 3 is still less than the target rotational speed, the control module 1 controls the field weakening current of the winch motor 3 by using the driving module 2, so that the rotational speed of the winch motor 3 reaches the target rotational speed by using the field weakening control mode.

[0059] It should be noted that the first acquisition module 5 is configured to acquire the operating current of the winch motor 3, and the specific type of the first acquisition module 5 can be set according to actual needs, and the first acquisition module 5 can be a current sensor, for example.

[0060] As shown in Figure 1 some embodiments, the high-voltage winch further comprises a second acquisition module 6 configured to acquire the operating rotational speed of the winch motor 3. The signal input end of the control module 1 is connected to the signal output end of the second acquisition module 6, and the control module 1 is configured to control the voltage of the winch motor 3 according to the operating rotational speed, and control the field weakening current of the winch motor 3 according to the operating rotational speed, until the operating rotational speed of the winch motor 3 reaches the target rotational speed.

[0061] It can be understood that, since the signal input end of the control module 1 is connected with the signal output end of the second acquisition module 6, the control module 1 can acquire the running speed of the winch motor 3 by using the second acquisition module 6, and the control module 1 controls the voltage of the winch motor 3 according to the running speed and controls the field weakening current of the winch motor 3 according to the running speed, so that the closed-loop control of the winch motor 3 is realized, and then the speed of the winch motor 3 can accurately reach the target speed.

[0062] It should be noted that the second acquisition module 6 is used to acquire the running speed of the winch motor 3, and the specific type of the second acquisition module 6 can be set according to actual needs, and no limitation is made thereto. For example, the second acquisition module 6 can be a speed sensor.

[0063] In some embodiments, the control module 1 is further configured to fit a speed-torque mapping relationship of the winch motor 3 according to the characteristics of the series motor, and control the torque of the winch motor 3 based on the fitted speed-torque mapping relationship and according to the speed of the winch motor 3.

[0064] It can be understood that, according to the fitted speed-torque mapping relationship and the speed of the winch motor 3, the control module 1 controls the torque of the winch motor 3, so as to simulate the characteristics of the series motor and meet the use requirements of the winch body 4.

[0065] It should be noted that the winch motor 3 is a power source of the high-voltage winch, for example, a permanent magnet synchronous motor. The torque characteristics of the motor within the rated speed are the same, and the output torque can reach 3 times the rated torque. The high-voltage winch requires that the output of the motor speed is inversely proportional to the torque, which is similar to the characteristics of the series motor.

[0066] When the winch motor 3 is in a low-speed state, the control module 1 sends a current instruction to the winch body 4 by using the driving module 2 to generate a maximum torque of 16 newton-meters. When the speed of the winch motor 3 increases, the torque instruction is set according to the speed and torque mapping relationship to set the torque (the torque corresponds to the current) of the winch motor 3.

[0067] The control method of the control module 1 for the winch motor 3 is vector control. Under this control method, the torque of the winch motor 3 is proportional to the set motor phase current.

[0068] The speed-torque mapping relationship can be expressed as a fitting curve, for example, a plurality of straight lines are used to fit the speed-torque curve.

[0069] For example, when the winch motor 3 is started at 0 speed, the torque of the winch motor 3 needs to be set to the maximum according to the curve. According to the conversion relationship between the current torque of the winch motor 3, it can be known that the corresponding current value is set. The control module 1 can control the current value of the winch motor 3.

[0070] When the winch motor 3 is powered on, the rotation speed immediately rises, the drive module 2 counts the rotation speed value of the winch motor 3, and immediately gives a corresponding current value according to the curve. With the rise of the rotation speed of the winch motor 3, the size of the internal current control is always set according to the torque current corresponding to the curve. Then the winch motor 3 can simulate the characteristics of a series motor.

[0071] The control power supply of the high-voltage winch needs to be connected to the low-voltage power supply in the vehicle carrier, but this low-voltage power supply is not always maintained at a fixed voltage, but will fluctuate within a certain range. During the fluctuation process, too low voltage is difficult to maintain the operation of the device, and too high voltage will cause abnormality or even damage to the device.

[0072] As shown in Figure 2 and Figure 3 In some embodiments, the high-voltage winch further comprises: a boost module 7 and a buck module 8, the boost module 7 comprises: a first charge-discharge unit and a boost chip U1, the power input end of the first charge-discharge unit is connected with the power output end of the low-voltage power supply, and the control output end of the boost chip U1 is connected with the control input end of the first charge-discharge unit, the boost chip U1 is used for controlling the charge-discharge of the first charge-discharge unit, so that the voltage of the power output end of the first charge-discharge unit is not less than the fifth voltage, the buck module 8 comprises: a second charge-discharge unit and a buck chip U2, the power input end of the second charge-discharge unit is connected with the power output end of the first charge-discharge unit, and the control output end of the buck chip U2 is connected with the control input end of the second charge-discharge unit, the buck chip U2 is used for controlling the charge-discharge of the second charge-discharge unit, so that the voltage of the power output end of the second charge-discharge unit is not greater than the first voltage;

[0073] Wherein, the first voltage is less than the fifth voltage, and the power input end of the control module 1 is connected with the power output end of the second charge-discharge unit.

[0074] It can be understood that, since the power input end of the first charge-discharge unit is connected with the power output end of the low-voltage power supply, and the control output end of the voltage boosting chip U1 is connected with the control input end of the first charge-discharge unit, the voltage boosting chip U1 can control the charge-discharge of the first charge-discharge unit, so that the voltage of the power output end of the first charge-discharge unit is boosted to be not less than the fifth voltage. In addition, since the power input end of the second charge-discharge unit is connected with the power output end of the first charge-discharge unit, and the control output end of the voltage reducing chip U2 is connected with the control input end of the second charge-discharge unit, the voltage reducing chip U2 can control the charge-discharge of the second charge-discharge unit, so that the voltage of the power output end of the second charge-discharge unit is reduced to be not greater than the first voltage. Thus, through the first voltage boosting of the voltage boosting module 7 and the second voltage reducing of the voltage reducing module 8, the input voltage can achieve a wide range, so that the stable power supply of the control module 1 can be realized when the voltage of the low-voltage power supply fluctuates, thereby ensuring the safe and stable operation of the high-voltage winch.

[0075] It should be noted that the low-voltage power supply, the fifth voltage and the first voltage can be set according to actual needs, and the present application is not limited in this regard. For example, the low-voltage power supply can be a 12V power supply on a vehicle. The 12V power supply is not always maintained at 12V, but will fluctuate between 9V and 18V, and in the extreme case, it will be above 24V. The voltage boosting module 7 and the voltage reducing module 8 of the present embodiment are connected in series. The voltage boosting module 7 makes the output voltage of the low-voltage power supply not less than the fifth voltage (12V), and the voltage reducing module 8 makes the first voltage (5V) of the voltage boosting module 7. Thus, the output voltage of the low-voltage power supply can work normally whether it is 6V or 40V.

[0076] For example, when the output voltage of the low-voltage power supply is greater than the fifth voltage, the voltage boosting module 7 continues to output the voltage, and the subsequent voltage reducing module 8 reduces the voltage to the first voltage. When the output voltage of the low-voltage power supply is not greater than the fifth voltage, the voltage boosting module 7 boosts the voltage to the fifth voltage, and the subsequent voltage reducing module 8 reduces the fifth voltage to the first voltage.

[0077] In the voltage boosting module 7, the voltage boosting chip U1 is used to control the charge-discharge of the first charge-discharge unit to achieve voltage boosting. The specific types of the voltage boosting chip U1 and the first charge-discharge unit can be set according to actual needs, and the present application is not limited in this regard. For example, the voltage boosting chip U1 can be an LGS6302 chip. The voltage boosting chip U1 has a first pin (feedback pin), a second pin (ground pin), a third pin (switch node pin), a fourth pin (switch node pin), a fifth pin (input pin), a sixth pin (empty pin), a seventh pin (empty pin) and an eighth pin (enable pin). The voltage boosting chip U1 is used to control the output of the third pin and the fourth pin for internal switch on-off control, thereby controlling the charge-discharge of the first charge-discharge unit.

[0078] In the step-down module 8, the step-down chip U2 is used to control the charging and discharging of the second charging and discharging unit to achieve step-down. The specific types of the step-down chip U2 and the second charging and discharging unit can be set according to actual needs and are not limited thereto. For example, the step-down chip U2 can be an LGS5145 chip. The step-down chip U2 has a first pin (bootstrap pin), a second pin (ground pin), a third pin (feedback pin), a fourth pin (enable pin), a fifth pin (input pin), and a sixth pin (switch node pin). The step-down chip U2 is used to control the on / off state of the internal switch to control the output of the sixth pin, thereby controlling the charging and discharging of the second charging and discharging unit.

[0079] like Figure 2 As shown, in some embodiments, the first charging and discharging unit includes a first inductor L1 and a first capacitor C1, wherein the first end of the first inductor L1 serves as the power input terminal of the first charging and discharging unit and is connected to the power output terminal of the low-voltage power supply, and the first end of the first capacitor C1 serves as the power output terminal of the first charging and discharging unit and is connected to the second end of the first inductor L1, the second end of the first capacitor C1 is grounded, and the switching node pin of the boost chip U1 is connected to the second end of the first inductor L1.

[0080] It is understandable that, since the first terminal of the first inductor L1 is connected to the power output terminal of the low-voltage power supply, and the first terminal of the first capacitor C1 is connected to the second terminal of the first inductor L1, and the second terminal of the first capacitor C1 is grounded, the first inductor L1 and the first capacitor C1 form an LC charging and discharging structure. Furthermore, since the switching node pin of the boost chip U1 is connected to the second terminal of the first inductor L1, the boost chip U1 can use the output of the switching node pin to control the charging and discharging of the first inductor L1 and the first capacitor C1, thereby ensuring that the voltage at the first terminal of the first capacitor C1 is not less than the fifth voltage.

[0081] It should be noted that the specific type of the first inductor L1 can be set according to actual needs, and there are no restrictions on it.

[0082] The specific type of the first capacitor C1 can be set according to actual needs and there are no restrictions on it. For example, the first capacitor C1 can be 4.7μF.

[0083] The boost chip U1 adjusts the switching frequency to control the duty cycle of its switching node pins, thereby regulating the charging time of the first charging and discharging unit and controlling the voltage at the power output terminal of the first charging and discharging unit.

[0084] like Figure 2As shown, in some embodiments, the first charging and discharging unit further includes: a second capacitor C2 and a first diode D1. The first terminal of the second capacitor C2 is connected to the first terminal of the first capacitor C1, and the second terminal of the second capacitor C2 is connected to the second terminal of the first capacitor C1. The capacitance value of the second capacitor C2 is less than the capacitance value of the first capacitor C1. The anode of the first diode D1 is connected to the second terminal of the first inductor L1 and the switching node pin of the boost chip U1, respectively, and the cathode of the first diode D1 is connected to the first terminal of the first capacitor C1 and the first terminal of the second capacitor C2, respectively.

[0085] It is understandable that, since the first terminal of the second capacitor C2 is connected to the first terminal of the first capacitor C1, and the second terminal of the second capacitor C2 is connected to the second terminal of the first capacitor C1, the capacitance value of the second capacitor C2 is less than that of the first capacitor C1. This allows the first capacitor C1 to perform low-frequency filtering and energy storage functions, while the second capacitor C2 can also be used to perform high-frequency filtering and low ESL (equivalent series inductance) functions, thereby ensuring the high performance of the boost module 7.

[0086] Since the anode of the first diode D1 is connected to the second terminal of the first inductor L1 and the switching node pin of the boost chip U1 respectively, and the cathode of the first diode D1 is connected to the first terminal of the first capacitor C1 and the first terminal of the second capacitor C2 respectively, the first diode D1 can achieve unidirectional conduction from the first inductor L1 to the first capacitor C1, thereby ensuring the stable charging and discharging of the first charging and discharging unit.

[0087] It should be noted that the specific type of the second capacitor C2 can be set according to actual needs, and there is no restriction on it. For example, the first capacitor C1 can be 0.1μF.

[0088] The first diode D1 is used for unidirectional conduction along the direction from the second terminal of the first inductor L1 to the first terminal of the first capacitor C1. The specific type of the first diode D1 can be set according to actual needs and is not limited thereto.

[0089] like Figure 2 As shown, in some embodiments, the boost module 7 further includes a third capacitor C3 and a first resistor R1. The first terminal of the third capacitor C3 is connected to the second terminal of the first inductor L1, and the second terminal of the third capacitor C3 is connected to the first terminal of the first resistor R1, with the second terminal of the first resistor R1 grounded.

[0090] It is understandable that, since the first terminal of the third capacitor C3 is connected to the second terminal of the first inductor L1, and the second terminal of the third capacitor C3 is connected to the first terminal of the first resistor R1, and the second terminal of the first resistor R1 is grounded, the third capacitor C3 and the first resistor R1 work together to eliminate the oscillation of the boost chip U1 during the switching process, thereby reducing high-frequency radiation.

[0091] It should be noted that the specific type of the third capacitor C3 can be set according to actual needs, and there are no restrictions on it. For example, the third capacitor C3 can be 100pF.

[0092] The specific type of the first resistor R1 can be set according to actual needs and there are no restrictions on it. For example, the first resistor R1 can be 10R.

[0093] like Figure 2 As shown, in some embodiments, the boost module 7 further includes a second resistor R2 and a third resistor R3. The first end of the second resistor R2 is connected to the first end of the first capacitor C1 and the first end of the second capacitor C2, and the second end of the second resistor R2 is connected to the first end of the third resistor R3. The second end of the third resistor R3 is grounded, and the feedback pin of the boost chip U1 is connected to the second end of the second resistor R2.

[0094] It is understandable that, since the first end of the second resistor R2 is connected to the first end of the first capacitor C1 and the first end of the second capacitor C2 respectively, and the second end of the second resistor R2 is connected to the first end of the third resistor R3, and the second end of the third resistor R3 is grounded, the second resistor R2 and the third resistor R3 can perform voltage division sampling on the voltage at the power output terminal of the first charging and discharging unit. Furthermore, since the feedback pin of the boost chip U1 is connected to the second end of the second resistor R2, the boost chip U1 can use the sampled voltage of the second resistor R2 and the third resistor R3 to perform closed-loop charging and discharging control on the first charging and discharging unit, thereby ensuring the stable output of the power output terminal voltage of the first charging and discharging unit.

[0095] It should be noted that the second resistor R2 and the third resistor R3 are used for voltage division sampling. The specific types of the second resistor R2 and the third resistor R3 can be set according to actual needs and there are no restrictions. For example, the second resistor R2 can be 1K or 10K.

[0096] like Figure 2 As shown, in some embodiments, the boost module 7 further includes a fourth resistor R4, a fourth capacitor C4, and a fifth capacitor C5. The first terminal of the fourth resistor R4 is connected to the first terminal of the first inductor L1. The first terminals of the fourth capacitor C4 and the fifth capacitor C5 are respectively connected to the first terminals of the first inductor L1, and the second terminals of the fourth capacitor C4 and the fifth capacitor C5 are respectively grounded. The capacitance values ​​of the fourth capacitor C4 and the fifth capacitor C5 are equal. The enable pin of the boost chip U1 is connected to the second terminal of the fourth resistor R4, and the input pins of the boost chip U1 are respectively connected to the first terminals of the fourth capacitor C4 and the fifth capacitor C5.

[0097] It can be understood that, since the first end of the fourth resistor R4 and the first end of the first inductor L1 are connected, and the enable pin of the boost chip U1 is connected to the second end of the fourth resistor R4, the low-voltage power supply can supply power to the enable pin of the boost chip U1 through the fourth resistor R4, thereby ensuring the stable operation of the boost chip U1.

[0098] Since the first end of the fourth capacitor C4 and the first end of the fifth capacitor C5 are respectively connected to the first end of the first inductor L1, and the second end of the fourth capacitor C4 and the second end of the fifth capacitor C5 are respectively grounded, and the input pin of the boost chip U1 is connected to the first end of the fourth capacitor C4 and the first end of the fifth capacitor C5 respectively, the low-voltage power supply can supply power to the input pin of the boost chip U1, and at the same time, the fourth capacitor C4 and the fifth capacitor C5 are used to realize energy storage filtering of the input voltage of the boost chip U1, thereby reducing high-frequency radiation.

[0099] It should be noted that the specific type of the fourth resistor R4 can be set according to actual needs, and this is not limited, for example, the fourth resistor R4 can be 4.7K.

[0100] The specific type of the fourth capacitor C4 and the fifth capacitor C5 can be set according to actual needs, and this is not limited, for example, the fourth capacitor C4 can be 10μF, and the fifth capacitor C5 can be 10μF.

[0101] As shown in Figure 3 In some embodiments, the second charge-discharge unit includes a second inductor L2 and a sixth capacitor C6. Wherein, the first end of the second inductor L2 is connected to the switch node pin of the step-down chip U2, and the first end of the sixth capacitor C6 is connected to the second end of the second inductor L2 as a power output end of the second charge-discharge unit, and the second end of the sixth capacitor C6 is grounded.

[0102] It can be understood that, since the first end of the second inductor L2 is connected to the switch node pin of the step-down chip U2, and the first end of the sixth capacitor C6 is connected to the second end of the second inductor L2 as a power output end of the second charge-discharge unit, and the second end of the sixth capacitor C6 is grounded, the second inductor L2 and the sixth capacitor C6 constitute an LC charge-discharge structure, and the step-down chip U2 can control the charge-discharge of the second inductor L2 and the sixth capacitor C6 through the output of the switch node pin, thereby realizing that the voltage at the first end of the sixth capacitor C6 is not greater than the first voltage.

[0103] It should be noted that the specific type of the second inductor L2 can be set according to actual needs, and this is not limited, for example, the second inductor L2 can be 10μH.

[0104] The specific type of the sixth capacitor C6 can be set according to actual needs, and the specific type of the sixth capacitor C6 is not limited in this regard. For example, the sixth capacitor C6 can be 2.2 μF.

[0105] As shown in Figure 3 some embodiments, the voltage reduction module 8 further comprises a seventh capacitor C7, an eighth capacitor C8, and a second diode D2. The first end of the seventh capacitor C7 and the first end of the eighth capacitor C8 are respectively connected to the first end of the sixth capacitor C6, and the second end of the seventh capacitor C7 and the second end of the eighth capacitor C8 are respectively connected to the second end of the sixth capacitor C6. The anode of the second diode D2 is connected to the second end of the sixth capacitor C6, and the cathode of the second diode D2 is connected to the first end of the second inductor L2.

[0106] It can be understood that, since the first end of the seventh capacitor C7 and the first end of the eighth capacitor C8 are respectively connected to the first end of the sixth capacitor C6, and the second end of the seventh capacitor C7 and the second end of the eighth capacitor C8 are respectively connected to the second end of the sixth capacitor C6, the seventh capacitor C7 and the eighth capacitor C8 cooperate with the sixth capacitor C6 to achieve better energy storage filtering of the second charge and discharge unit. At the same time, since the anode of the second diode D2 is connected to the second end of the sixth capacitor C6, and the cathode of the second diode D2 is connected to the first end of the second inductor L2, the second end of the sixth capacitor C6 and the switch node pin of the voltage reduction chip U2 are connected in one direction by the second diode D2, thereby ensuring stable operation of the voltage reduction module 8.

[0107] It should be noted that the specific type of the seventh capacitor C7 and the eighth capacitor C8 can be set according to actual needs, and the specific type of the seventh capacitor C7 and the eighth capacitor C8 is not limited in this regard. For example, the seventh capacitor C7 can be 2.2 μF, and the eighth capacitor C8 can be 2.2 μF.

[0108] The second diode D2 is used for one-way conduction from the second end of the sixth capacitor C6 to the first end of the second inductor L2. The specific type of the second diode D2 can be set according to actual needs, and the specific type of the second diode D2 is not limited in this regard.

[0109] As shown in Figure 3 some embodiments, the voltage reduction module 8 further comprises a fifth resistor R5, a sixth resistor R6, and a ninth capacitor C9. The first end of the fifth resistor R5 is grounded, and the second end of the fifth resistor R5 is connected to the first end of the sixth resistor R6 and the feedback pin of the voltage reduction chip U2. The second end of the sixth resistor R6 is connected to the first end of the sixth capacitor C6. The first end of the ninth capacitor C9 is connected to the bootstrap pin of the voltage reduction chip U2, and the second end of the ninth capacitor C9 is connected to the first end of the second inductor L2.

[0110] It can be understood that, since the first end of the fifth resistor R5 is grounded, and the second end of the fifth resistor R5 is connected with the first end of the sixth resistor R6 and the feedback pin of the voltage reduction chip U2 respectively, and the second end of the sixth resistor R6 is connected with the first end of the sixth capacitor C6, the fifth resistor R5 and the sixth resistor R6 can sample the voltage of the second charge-discharge unit power output end, and the voltage reduction chip U2 can use the sampling voltage of the fifth resistor R5 and the sixth resistor R6 to control the closed-loop charge-discharge of the second charge-discharge unit, thereby ensuring the stable output of the second charge-discharge unit power output end voltage.

[0111] Since the first end of the ninth capacitor C9 is connected with the bootstrap pin of the voltage reduction chip U2, and the second end of the ninth capacitor C9 is connected with the first end of the second inductor L2, the ninth capacitor C9 can use energy storage and discharge to realize the power supply of the internal devices of the voltage reduction chip U2, thereby ensuring the stable operation of the voltage reduction chip U2.

[0112] It should be noted that the specific types of the fifth resistor R5 and the sixth resistor R6 can be set according to actual needs, and are not limited, for example, the fifth resistor R5 can be 1K, and the sixth resistor R6 can be 5.1K.

[0113] The specific type of the ninth capacitor C9 can be set according to actual needs, and is not limited, for example, the ninth capacitor C9 can be 0.1μF.

[0114] The control power supply of the high-voltage winch needs to be connected to the low-voltage power supply in the vehicle carrier, and cannot directly use the high-voltage power supply in the carrier, which leads to the need to configure more voltage conversion devices and connection lines between the high-voltage power supply and the low-voltage power supply, causing the increase of winch power supply cost and the rise of failure rate, affecting the safe and stable operation of the winch.

[0115] As Figure 4 , Figure 5 and Figure 7As shown, as another power supply mode of the embodiment, the high-voltage winch further comprises: a first conversion module 9, a second conversion module 10 and a third conversion module 11. The power input end of the first conversion module 9 is connected with the power output end of the high-voltage power supply, and the first conversion module 9 is used to convert the power supply voltage of the power output end of the high-voltage power supply to output a first voltage at the first power output end and a second voltage at the second power output end. The power input end of the second conversion module 10 is connected with the second power output end of the first conversion module 9, and the second conversion module 10 is used to convert the second voltage of the second power output end of the first conversion module 9 to output a third voltage at the power output end. The power input end of the third conversion module 11 is connected with the second power output end of the first conversion module 9, and the third conversion module 11 is used to convert the second voltage of the second power output end of the first conversion module 9 to output a third voltage and a fourth voltage at the first power output end, the second power output end and the third power output end, respectively. The first power output end of the first conversion module 9 is connected with the power input end of the control module 1, the power output end of the second conversion module 10 is connected with the first power input end of the driving module 2, and the first power output end, the second power output end and the third power output end of the third conversion module 11 are connected with the first power input end and the second power input end of the driving module 2, respectively.

[0116] It can be understood that, since the power input end of the first conversion module 9 is connected with the power output end of the high-voltage power supply, and the power input end of the second conversion module 10 is connected with the second power output end of the first conversion module 9, and the power input end of the third conversion module 11 is connected with the second power output end of the first conversion module 9, the voltage of the power output end of the high-voltage power supply can be converted to the first voltage and the second voltage by the first conversion module 9, and the second voltage can be converted to the third voltage by the second conversion module 10, and the second voltage can be converted to the third voltage and the fourth voltage by the third conversion module 11.

[0117] Therefore, by the cooperation of the first conversion module 9, the second conversion module 10 and the third conversion module 11, the high voltage of the power output end of the high-voltage power supply can be converted to the first voltage, the third voltage and the third voltage and the fourth voltage required for the operation of the winch, so as to realize the direct power supply of the winch by the high-voltage power supply, and meanwhile, the devices and the circuit arranged between the high-voltage power supply and the low-voltage power supply are omitted, thereby reducing the cost and the failure rate of the power supply of the winch and ensuring the safe and stable operation of the winch.

[0118] It should be noted that the first conversion module 9 is used to convert the power supply voltage of the power output end of the high-voltage power supply to output the first voltage at the first power output end and the second voltage at the second power output end. The specific type of the first conversion module 9 can be set according to actual needs, and no limitation is made thereto.

[0119] The first voltage can be 5V, used to power the control module 1 of the winch motor 3, and the second voltage can be 24V.

[0120] The second conversion module 10 is used to convert the second voltage at the second power output terminal of the first conversion module 9 to output a third voltage at the power output terminal. The specific type of the second conversion module 10 can be set according to actual needs and is not limited thereto.

[0121] The third voltage can be -5V, which is used to power the drive module 2 of the winch motor 3. Specifically, the third voltage is used for the three low-side IGBTs in the drive module 2.

[0122] The third conversion module 11 is used to convert the second voltage at the second power output terminal of the first conversion module 9, so as to output the third voltage and the fourth voltage at the first power output terminal, the second power output terminal and the third power output terminal respectively. The specific type of the third conversion module 11 can be set according to actual needs and there is no restriction on it.

[0123] The fourth voltage can be 15V, used to power the drive module 2 of the winch motor 3. Specifically, the fourth voltage is used for the IGBT module in the drive module 2.

[0124] The specific type of high-voltage power supply can be set according to actual needs and there are no restrictions on it. For example, the high-voltage power supply can be a vehicle power battery.

[0125] like Figure 4 As shown, in some embodiments, the first conversion module 9 includes: a first transformer T1, a first switching unit 901, a first rectifier unit 902, a second rectifier unit 903, and a first control unit 904.

[0126] The first end of the primary side winding of the first transformer T1 is connected with the power output end of the high-voltage power supply, and the first switch unit 901 is connected in series between the second end of the primary side winding of the first transformer T1 and the ground; the power input end of the first rectifier unit 902 is connected with the first secondary side winding of the first transformer T1, and the power output end of the first rectifier unit 902 is connected with the power input end of the control module 1; the power input end of the second rectifier unit 903 is connected with the second secondary side winding of the first transformer T1, and the power output end of the second rectifier unit 903 is connected with the power input end of the second conversion module 10 and the power input end of the third conversion module 11 respectively; the power input end of the first control unit 904 is connected with the third secondary side winding of the first transformer T1, and the control output end of the first control unit 904 is connected with the control input end of the first switch unit 901; the first control unit 904 is used for controlling the on-off of the first switch unit 901, so that the power output end of the first rectifier unit 902 outputs the first voltage as the first power output end of the first conversion module 9, and the power output end of the second rectifier unit 903 outputs the second voltage as the second power output end of the first conversion module 9.

[0127] It can be understood that, since the first end of the primary side winding of the first transformer T1 is connected with the power output end of the high-voltage power supply, and the first switch unit 901 is connected in series between the second end of the primary side winding of the first transformer T1 and the ground, the first switch unit 901 can control the on-off of the path between the power output end of the high-voltage power supply and the primary side winding of the first transformer T1; and since the power input end of the first control unit 904 is connected with the third secondary side winding of the first transformer T1, and the control output end of the first control unit 904 is connected with the control input end of the first switch unit 901, the first control unit 904 can control the on-off of the first switch unit 901 under the power supply of the third secondary side winding of the first transformer T1, so as to realize the high-frequency alternating current output of the first secondary side winding and the second secondary side winding of the first transformer T1; and since the power input end of the first rectifier unit 902 is connected with the first secondary side winding of the first transformer T1, and the power input end of the second rectifier unit 903 is connected with the second secondary side winding of the first transformer T1, the first rectifier unit 902 can rectify the high-frequency alternating current output by the first secondary side winding of the first transformer T1, so as to output the first voltage; and the second rectifier unit 903 can rectify the high-frequency alternating current output by the second secondary side winding of the first transformer T1, so as to output the second voltage.

[0128] The first switch unit 901 is used for controlling the on-off of the path between the high-voltage power supply output end and the primary winding of the first transformer T1. Through the on-off control, the high-frequency alternating current output of the secondary winding of the first transformer T1 is realized. The specific type of the first switch unit 901 can be set according to actual needs, and no limitation is made thereto. For example, the first switch unit 901 can be a MOS tube or the like.

[0129] It should be noted that the first transformer T1 is used for voltage conversion, and the first transformer T1 has a primary winding, a first secondary winding, a second secondary winding and a third secondary winding. When the primary winding is powered, the first secondary winding, the second secondary winding and the third secondary winding respectively output three groups of isolated power supplies. The specific type of the first transformer T1 can be set according to actual needs, and no limitation is made thereto.

[0130] The first switch unit 901 is used for controlling the on-off of the path between the high-voltage power supply output end and the primary winding of the first transformer T1. Through the on-off control, the high-frequency alternating current output of the secondary winding of the first transformer T1 is realized. The specific type of the first switch unit 901 can be set according to actual needs, and no limitation is made thereto. For example, the first switch unit 901 can be a MOS tube or the like.

[0131] The first rectifier unit 902 is used for rectifying the electric energy output by the first secondary winding of the first transformer T1, so as to output the first voltage required by the winch motor 3 control module 1. The specific type of the first rectifier unit 902 can be set according to actual needs, and no limitation is made thereto.

[0132] The second rectifier unit 903 is used for rectifying the electric energy output by the second secondary winding of the first transformer T1, so as to output the second voltage required by the second conversion module 10 and the third conversion module 11. The specific type of the second rectifier unit 903 can be set according to actual needs, and no limitation is made thereto.

[0133] The first control unit 904 is used for controlling the on-off of the first switch unit 901, so that the power supply output end of the first rectifier unit 902 outputs the first voltage, and the power supply output end of the second rectifier unit 903 outputs the second voltage. The specific type of the first control unit 904 can be set according to actual needs, and no limitation is made thereto.

[0134] As shown in FIG. 1, the winch motor 3 control module 1 is connected to the first voltage output end of the first rectifier unit 902, and the second voltage output end of the second rectifier unit 903 is connected to the second conversion module 10 and the third conversion module 11. Figure 4As shown, in some embodiments, the first switch unit 901 comprises: a first MOS tube Q1, the first MOS tube Q1 is N type, and the drain of the first MOS tube Q1 is connected with the second end of the primary side winding of the first transformer T1, and the source of the first MOS tube Q1 is grounded; the first control unit 904 comprises: a first control chip U3, a seventh resistor R7, an eighth resistor R8 and a tenth capacitor C10. Wherein, the power input pin of the first control chip U3 is used as the power input end of the first control unit 904 and is connected with the first end of the third secondary side winding of the first transformer T1, and the second end of the third secondary side winding of the first transformer T1 is grounded; the first end of the seventh resistor R7 is connected with the drive output pin of the first control chip U3, and the second end of the seventh resistor R7 is used as the control output end of the first control unit 904 and is connected with the gate of the first MOS tube Q1; the first end of the eighth resistor R8 is connected with the reference voltage output pin of the first control chip U3, and the second end of the eighth resistor R8 is connected with the oscillator timing resistor capacitor pin of the first control chip U3; the first end of the tenth capacitor C10 is connected with the second end of the eighth resistor R8, and the second end of the tenth capacitor C10 is grounded.

[0135] It can be understood that, since the power input pin of the first control chip U3 is connected with the first end of the third secondary side winding of the first transformer T1, the third secondary side winding of the first transformer T1 can supply power for the first control chip U3, thereby ensuring the stable operation of the first control chip U3.

[0136] Since the first end of the seventh resistor R7 is connected with the drive output pin of the first control chip U3, and the second end of the seventh resistor R7 is used as the control output end of the first control unit 904 and is connected with the gate of the first MOS tube Q1, the first control chip U3 can control the gate voltage of the first MOS tube Q1 by using the seventh resistor R7, thereby controlling the on-off of the drain and source of the first MOS tube Q1, and since the drain of the first MOS tube Q1 is connected with the second end of the primary side winding of the first transformer T1, and the source of the first MOS tube Q1 is grounded, under the control of the first control chip U3, the high-frequency alternating current output of the first secondary side winding, the second secondary side winding and the third secondary side winding of the first transformer T1 can be realized.

[0137] Since the first end of the eighth resistor R8 is connected with the reference voltage pin of the first control chip U3, and the second end of the eighth resistor R8 is connected with the oscillator timing resistor capacitor pin of the first control chip U3, and the first end of the tenth capacitor C10 is connected with the second end of the eighth resistor R8, and the second end of the tenth capacitor C10 is grounded, the eighth resistor R8 and the tenth capacitor C10 constitute an oscillation circuit under the switching control of the first control chip U3, thereby ensuring the accurate control of the first control chip U3 on the first MOS tube Q1.

[0138] It should be noted that the first control chip U3 is used to control the on-off of the first MOS tube Q1, and the specific type of the first control chip U3 can be set according to actual needs, and no limitation is made to this, for example, the first control chip U3 can be a UC3842 chip, and the first control chip U3 has a first pin (a compensation pin), a second pin (a feedback pin), a third pin (a current detection pin), a fourth pin (an oscillator timing resistor capacitor pin), a fifth pin (a ground pin), a sixth pin (a driving output pin), a seventh pin (a power input pin), and an eighth pin (a reference voltage pin).

[0139] The first MOS tube Q1 is used as a switching device, and is turned on and off under the control of the first control unit 904, so as to realize high-frequency alternating current output of the first transformer T1, and the specific type of the first MOS tube Q1 can be set according to actual needs, and no limitation is made to this.

[0140] A MOS tube (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) is a kind of semiconductor device for controlling current by using electric field effect, the gate (Gate, G) of the MOS tube is controlled by applying voltage to turn on the channel, the source (Source, S) is the input end of the carrier (electron or hole) by applying current, and the drain (Drain, D) is the output end of the carrier.

[0141] The specific type of the seventh resistor R7 can be set according to actual needs, and no limitation is made to this.

[0142] The specific type of the eighth resistor R8 can be set according to actual needs, and no limitation is made to this, for example, the eighth resistor R8 can be 10K.

[0143] The specific type of the tenth capacitor C10 can be set according to actual needs, and no limitation is made to this, for example, the tenth capacitor C10 can be 2200pF.

[0144] As shown in Figure 4 In some embodiments, the first control unit 904 further includes an eleventh capacitor C11, a third diode D3, a twelfth capacitor C12, a thirteenth capacitor C13, a ninth resistor R9, a fourteenth capacitor C14, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, and a fifteenth resistor R15.

[0145] The first end of the eleventh capacitor C11 is connected with the power input pin of the first control chip U3, and the second end of the eleventh capacitor C11 is grounded. The third diode D3 is connected in series between the power input pin of the first control chip U3 and the first end of the third secondary side winding of the first transformer T1. The anode of the third diode D3 is connected with the first end of the third secondary side winding of the first transformer T1, and the cathode of the third diode D3 is connected with the power input pin of the first control chip U3. The first end of the twelfth capacitor C12 is connected with the reference voltage pin of the first control chip U3, and the second end of the twelfth capacitor C12 is grounded. The first end of the thirteenth capacitor C13 is connected with the compensation pin of the first control chip U3, and the second end of the thirteenth capacitor C13 is connected with the feedback pin of the first control chip U3. The first end of the ninth resistor R9 is connected with the first end of the thirteenth capacitor C13, and the second end of the ninth resistor R9 is connected with the second end of the thirteenth capacitor C13. The tenth resistor R10 and the eleventh resistor R11 are connected in series between the source of the first MOS Q1 and the ground, and the first end of the tenth resistor R10 is connected with the source of the first MOS Q1. The first end of the eleventh resistor R11 is connected with the second end of the tenth resistor R10, and the second end of the eleventh resistor R11 is grounded. The first end of the fourteenth capacitor C14 is connected with the current detection pin of the first control chip U3, and the second end of the fourteenth capacitor C14 is grounded. The first end of the twelfth resistor R12 is connected with the current detection pin of the first control chip U3, and the second end of the twelfth resistor R12 is connected with the source of the first MOS Q1. The first end of the thirteenth resistor R13 is connected with the power output end of the second rectifier unit 903, and the second end of the thirteenth resistor R13 is connected with the feedback pin of the first control chip U3. The first end of the fourteenth resistor R14 is connected with the second end of the thirteenth resistor R13, and the first end of the fifteenth resistor R15 is connected with the second end of the fourteenth resistor R14. The second end of the fifteenth resistor R15 is grounded.

[0146] It can be understood that, since the first end of the eleventh capacitor C11 is connected with the power input pin of the first control chip U3, and the second end of the eleventh capacitor C11 is grounded, the power input pin of the first control chip U3 can realize voltage stabilization filtering by using the eleventh capacitor C11, thereby ensuring the stable operation of the first control chip U3.

[0147] Since the anode of the third diode D3 is connected with the first end of the third secondary side winding of the first transformer T1, and the cathode of the third diode D3 is connected with the power input pin of the first control chip U3, the first end of the third secondary side winding of the first transformer T1 and the power input pin of the first control chip U3 can realize unidirectional conduction by using the third diode D3, thereby ensuring the stable power supply of the first transformer T1 to the first control chip U3.

[0148] Since the first end of the twelfth capacitor C12 is connected with the reference voltage pin of the first control chip U3, and the second end of the twelfth capacitor C12 is grounded, the reference voltage pin of the first control chip U3 can be stabilized by the twelfth capacitor C12, so as to ensure the stable operation of the first control chip U3.

[0149] Since the first end of the thirteenth capacitor C13 is connected with the compensation pin of the first control chip U3, and the second end of the thirteenth capacitor C13 is connected with the feedback pin of the first control chip U3, the first end of the ninth resistor R9 is connected with the first end of the thirteenth capacitor C13, and the second end of the ninth resistor R9 is connected with the second end of the thirteenth capacitor C13, so that the thirteenth capacitor C13 and the ninth resistor R9 cooperate to stabilize the voltage of the feedback pin of the first control chip U3, and improve the dynamic response and anti-interference ability of the first control chip U3.

[0150] Since the tenth resistor R10 and the eleventh resistor R11 are connected in series between the source of the first MOS Q1 and the ground, and the first end of the fourteenth capacitor C14 is connected with the current detection pin of the first control chip U3, the second end of the fourteenth capacitor C14 is grounded, the first end of the twelfth resistor R12 is connected with the current detection pin of the first control chip U3, and the second end of the twelfth resistor R12 is connected with the source of the first MOS Q1, so that the current detection pin of the first control chip U3 can collect the current of the first MOS Q1 by cooperation of the fourteenth capacitor C14, the tenth resistor R10, the eleventh resistor R11 and the twelfth resistor R12, so as to realize overcurrent protection of the first MOS Q1 based on the collected current of the first MOS Q1, and ensure the stable operation of the power conversion module.

[0151] Since the first end of the thirteenth resistor R13 is connected with the power output end of the second rectifier unit 903, and the second end of the thirteenth resistor R13 is connected with the feedback pin of the first control chip U3, the first end of the fourteenth resistor R14 is connected with the second end of the thirteenth resistor R13, the first end of the fifteenth resistor R15 is connected with the second end of the fourteenth resistor R14, and the second end of the fifteenth resistor R15 is grounded, so that the feedback pin of the first control chip U3 can obtain the voltage of the power output end of the second rectifier unit 903 by voltage division sampling of the thirteenth resistor R13, the fourteenth resistor R14 and the fifteenth resistor R15, so as to facilitate the closed-loop control of the first MOS Q1, and then realize the precise output of the voltage.

[0152] It should be noted that the specific types of the eleventh capacitor C11 and the twelfth capacitor C12 can be set according to actual needs, and this is not limited, for example, the eleventh capacitor C11 can be 0.1 μF, and the twelfth capacitor C12 can be 0.1 μF.

[0153] The third diode D3 is used for unidirectional conduction along the first end of the third secondary winding of the first transformer T1 to the power input pin of the first control chip U3. The specific type of the third diode D3 can be set according to actual needs and there is no restriction on it.

[0154] The specific type of the thirteenth capacitor C13 can be set according to actual needs and there are no restrictions on it. For example, the thirteenth capacitor C13 can be 100pF.

[0155] The specific type of the ninth resistor R9 can be set according to actual needs and there are no restrictions on it. For example, the ninth resistor R9 can be 100K.

[0156] The specific type of the fourteenth capacitor C14 can be set according to actual needs and there are no restrictions on it. For example, the thirteenth capacitor C13 can be 470pF.

[0157] The specific types of the tenth resistor R10, the eleventh resistor R11, and the twelfth resistor R12 can be set according to actual needs and there are no restrictions on them. For example, the tenth resistor R10 can be 0.22R, the eleventh resistor R11 can be 0.22R, and the twelfth resistor R12 can be 1K.

[0158] The specific types of the thirteenth resistor R13, the fourteenth resistor R14, and the fifteenth resistor R15 can be set according to actual needs and there are no restrictions on this. For example, the thirteenth resistor R13 can be 20K, the fourteenth resistor R14 can be 470R, and the fifteenth resistor R15 can be 2K.

[0159] like Figure 4 As shown, in some embodiments, the first conversion module 9 further includes a startup unit 905, which includes: a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-fifth capacitor C25, a twenty-sixth capacitor C26, a twenty-seventh capacitor C27, a twenty-eighth capacitor C28, a twenty-ninth capacitor C29, a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a thirtieth capacitor C30, a seventh diode D7, and an eighth diode D8.

[0160] The first end of the seventeenth resistor R17 is connected with the power output end of the high-voltage power supply, and the first end of the eighteenth resistor R18 is connected with the power input end of the first control unit 904, the first end of the nineteenth resistor R19 is connected with the second end of the eighteenth resistor R18, the first end of the twentieth resistor R20 is connected with the second end of the nineteenth resistor R19, the first end of the twenty-first resistor R21 is connected with the second end of the twentieth resistor R20, and the second end of the twenty-first resistor R21 is connected with the second end of the seventeenth resistor R17; the first end of the twenty-fifth capacitor C25 is connected with the power output end of the high-voltage power supply, and the second end of the twenty-fifth capacitor C25 is grounded, the first end of the twenty-sixth capacitor C26 is connected with the second end of the twenty-fifth capacitor C25, the second end of the twenty-sixth capacitor C26 is grounded, the first end of the twenty-seventh capacitor C27 is connected with the second end of the twenty-sixth capacitor C26, and the second end of the twenty-seventh capacitor C27 is connected with the power input end of the first control unit 904; the first end of the twenty-eighth capacitor C28 is connected with the power output end of the high-voltage power supply, and the first end of the twenty-ninth capacitor C29 is connected with the second end of the twenty-eighth capacitor C28, the second end of the twenty-ninth capacitor C29 is connected with the second end of the twenty-sixth capacitor C26, the first end of the twenty-second resistor R22 is connected with the first end of the twenty-eighth capacitor C28, the second end of the twenty-second resistor R22 is connected with the second end of the twenty-eighth capacitor C28, the first end of the twenty-third resistor R23 is connected with the first end of the twenty-ninth capacitor C29, and the second end of the twenty-third resistor R23 is connected with the second end of the twenty-ninth capacitor C29; the first end of the twenty-fourth resistor R24 is connected with the second end of the seventeenth resistor R17, and the first end of the thirtieth capacitor C30 is connected with the first end of the twenty-fourth resistor R24, the second end of the thirtieth capacitor C30 is connected with the second end of the twenty-fourth resistor R24, the anode of the seventh diode D7 is connected with the second end of the primary side winding of the first transformer T1, the cathode of the seventh diode D7 is connected with the second end of the thirtieth capacitor C30, the anode of the eighth diode D8 is connected with the cathode of the seventh diode D7, and the cathode of the eighth diode D8 is connected with the first end of the primary side winding of the first transformer T1.

[0161] It can be understood that, since the first end of the seventeenth resistor R17 is connected with the power output end of the high-voltage power supply, the first end of the eighteenth resistor R18 is connected with the power input end of the first control unit 904, the first end of the nineteenth resistor R19 is connected with the second end of the eighteenth resistor R18, the first end of the twentieth resistor R20 is connected with the second end of the nineteenth resistor R19, the first end of the twenty-first resistor R21 is connected with the second end of the twentieth resistor R20, the second end of the twenty-first resistor R21 is connected with the second end of the seventeenth resistor R17, the first end of the twenty-seventh capacitor C27 is connected with the second end of the twenty-sixth capacitor C26, and the second end of the twenty-seventh capacitor C27 is connected with the power input end of the first control unit 904, the high-voltage power supply can charge the twenty-seventh capacitor C27 by using the seventeenth resistor R17, the eighteenth resistor R18, the nineteenth resistor R19, the twentieth resistor R20 and the twenty-first resistor R21, so that the first control unit 904 is started by using the electric energy stored in the twenty-seventh capacitor C27, and the safe and stable operation of the first control unit 904 is ensured.

[0162] Since the first end of the twenty-fifth capacitor C25 is connected with the power output end of the high-voltage power supply, and the second end of the twenty-fifth capacitor C25 is grounded, the first end of the twenty-sixth capacitor C26 is connected with the second end of the twenty-fifth capacitor C25, and the second end of the twenty-sixth capacitor C26 is grounded, the power output end of the high-voltage power supply can be filtered by using the twenty-fifth capacitor C25 and the twenty-sixth capacitor C26, so that the stable output of the voltage is ensured.

[0163] Since the first end of the twenty-eighth capacitor C28 is connected with the power output end of the high-voltage power supply, the first end of the twenty-ninth capacitor C29 is connected with the second end of the twenty-eighth capacitor C28, and the second end of the twenty-ninth capacitor C29 is connected with the second end of the twenty-sixth capacitor C26, the twenty-eighth capacitor C28 and the twenty-ninth capacitor C29 can improve the voltage resistance of the starting unit 905, and can store energy and filter, and since the first end of the twenty-second resistor R22 is connected with the first end of the twenty-eighth capacitor C28, the second end of the twenty-second resistor R22 is connected with the second end of the twenty-eighth capacitor C28, the first end of the twenty-third resistor R23 is connected with the first end of the twenty-ninth capacitor C29, and the second end of the twenty-third resistor R23 is connected with the second end of the twenty-ninth capacitor C29, the voltage balance between the twenty-eighth capacitor C28 and the twenty-ninth capacitor C29 can be realized by using the twenty-second resistor R22 and the twenty-third resistor R23. Therefore, the safe and stable starting of the first control unit 904 is ensured.

[0164] The first end of the twenty-fourth resistor R24 is connected with the second end of the seventeenth resistor R17, the first end of the thirtieth capacitor C30 is connected with the first end of the twenty-fourth resistor R24, the second end of the thirtieth capacitor C30 is connected with the second end of the twenty-fourth resistor R24, the anode of the seventh diode D7 is connected with the second end of the primary side winding of the first transformer T1, and the cathode of the seventh diode D7 is connected with the second end of the thirtieth capacitor C30, so that the twenty-fourth resistor R24, the thirtieth capacitor C30 and the seventh diode D7 form an absorption circuit, thereby being capable of absorbing voltage spikes, ensuring stable operation of the first transformer T1, and because the anode of the eighth diode D8 is connected with the cathode of the seventh diode D7, and the cathode of the eighth diode D8 is connected with the first end of the primary side winding of the first transformer T1, the eighth diode D8 can play a role in limiting voltage, avoiding damage to devices caused by excessively high voltage.

[0165] It should be noted that the specific types of the seventeenth resistor R17, the eighteenth resistor R18, the nineteenth resistor R19, the twentieth resistor R20, the twenty-first resistor R21, the twenty-second resistor R22, the twenty-third resistor R23 and the twenty-fourth resistor R24 can be set according to actual needs, and are not limited, for example, the eighteenth resistor R18 can be 100K, the nineteenth resistor R19 can be 100K, the twentieth resistor R20 can be 100K, the twenty-first resistor R21 can be 100K, the twenty-second resistor R22 can be 68K, the twenty-third resistor R23 can be 68K, and the twenty-fourth resistor R24 can be 68K.

[0166] The specific types of the twenty-fifth capacitor C25, the twenty-sixth capacitor C26, the twenty-seventh capacitor C27, the twenty-eighth capacitor C28, the twenty-ninth capacitor C29 and the thirtieth capacitor C30 can be set according to actual needs, and are not limited, for example, the twenty-fifth capacitor C25 can be 22nF, the twenty-sixth capacitor C26 can be 22nF, the twenty-seventh capacitor C27 can be 100μF, the twenty-eighth capacitor C28 can be 150μF, the twenty-ninth capacitor C29 can be 150μF, and the thirtieth capacitor C30 can be 22nF.

[0167] The seventh diode D7 is used for conduction in the direction from the second end of the primary side winding of the first transformer T1 to the second end of the thirtieth capacitor C30, and the eighth diode D8 is used for reverse conduction in the direction from the cathode of the seventh diode D7 to the first end of the primary side winding of the first transformer T1, and the specific types of the seventh diode D7 and the eighth diode D8 can be set according to actual needs, and are not limited.

[0168] As Figure 5As shown, in some embodiments, the third conversion module 11 comprises: a second transformer T2, a second switch unit 111, a third rectifier unit 112, a fourth rectifier unit, a fifth rectifier unit and a second control unit 113.

[0169] The first end of the primary winding of the second transformer T2 is connected to the second power output end of the first conversion module 9, and the second switch unit 111 is connected in series between the second end of the primary winding of the second transformer T2 and the ground. The power input end of the third rectifier unit 112 is connected to the first secondary winding of the second transformer T2, the first power output end of the third rectifier unit 112 is connected to the first power input end of the driving module 2, and the second power output end of the third rectifier unit 112 is connected to the second power input end of the driving module 2. The power input end of the fourth rectifier unit is connected to the second secondary winding of the first transformer T1, the first power output end of the fourth rectifier unit is connected to the first power input end of the driving module 2, and the second power output end of the fourth rectifier unit is connected to the second power input end of the driving module 2. The power input end of the fifth rectifier unit is connected to the third secondary winding of the second transformer T2, the first power output end of the fifth rectifier unit is connected to the first power input end of the driving module 2, and the second power output end of the fifth rectifier unit is connected to the second power input end of the driving module 2. The power input end of the second control unit 113 is connected to the second power output end of the first conversion module 9, the control output end of the second control unit 113 is connected to the control input end of the second switch unit 111, and the second control unit 113 is used to control the on-off of the second switch unit 111, so that the first power output ends of the third rectifier unit 112, the fourth rectifier unit and the fifth rectifier unit output the third voltage respectively, and the second power output ends of the third rectifier unit 112, the fourth rectifier unit and the fifth rectifier unit output the fourth voltage respectively.

[0170] It can be understood that, since the first end of the primary side winding of the second transformer T2 is connected with the second power output end of the first conversion module 9, and the second switch unit 111 is connected in series between the second end of the primary side winding of the second transformer T2 and the ground, the second switch unit 111 can control the on-off of the path between the second power output end of the first conversion module 9 and the primary side winding of the second transformer T2, and since the power input end of the second control unit 113 is connected with the second power output end of the first conversion module 9, and the control output end of the second control unit 113 is connected with the control input end of the second switch unit 111, the second control unit 113 can control the on-off of the second switch unit 111 under the power supply of the first conversion module 9, so as to realize the high-frequency alternating current output of the first secondary winding, the second secondary winding and the third secondary winding of the second transformer T2. At the same time, since the power input end of the third rectifier unit 112 is connected with the first secondary winding of the second transformer T2, the power input end of the fourth rectifier unit is connected with the second secondary winding of the first transformer T1, and the power input end of the fifth rectifier unit is connected with the third secondary winding of the second transformer T2, the third rectifier unit 112 can rectify the high-frequency alternating current output by the first secondary winding of the second transformer T2, so as to output the third voltage and the fourth voltage, the fourth rectifier unit can rectify the high-frequency alternating current output by the second secondary winding of the second transformer T2, so as to output the third voltage and the fourth voltage, and the fifth rectifier unit can rectify the high-frequency alternating current output by the third secondary winding of the second transformer T2, so as to output the third voltage and the fourth voltage.

[0171] Through the on-off control of the second switch unit 111 by the second control unit 113, and the rectification of the third rectifier unit 112, the fourth rectifier unit and the fifth rectifier unit, voltage conversion is realized. Therefore, the third conversion module 11 can realize the direct power supply of the high-voltage power supply to the winch in cooperation with the first conversion module 9 and the second conversion module 10, so as to eliminate the devices and lines arranged between the high-voltage power supply and the low-voltage power supply, thereby reducing the cost and failure rate of the power supply of the winch, and ensuring the safe and stable operation of the winch.

[0172] It should be noted that the second transformer T2 is used for voltage conversion, and the second transformer T2 has a primary side winding, a first secondary winding, a second secondary winding and a third secondary winding. When the primary side winding is powered, the first secondary winding, the second secondary winding and the third secondary winding respectively output three groups of isolated power supplies. The specific type of the second transformer T2 can be set according to actual needs, and no limitation is made thereto.

[0173] The second switch unit 111 is used for controlling the on-off of the passage between the second power output end of the first conversion module 9 and the primary side winding of the second transformer T2. Through the on-off control, the high-frequency alternating current output of the secondary side winding of the second transformer T2 is realized. The specific type of the second switch unit 111 can be set according to actual needs, and no limitation is made to this. For example, the second switch unit 111 can be a MOS tube or the like.

[0174] The third rectifier unit 112 is used for rectifying the electric energy output by the first secondary side winding of the second transformer T2, so as to output the third voltage and the fourth voltage required by the winch motor 3 driving module 2. The specific type of the third rectifier unit 112 can be set according to actual needs, and no limitation is made to this.

[0175] The fourth rectifier unit is used for rectifying the electric energy output by the second secondary side winding of the second transformer T2, so as to output the third voltage and the fourth voltage required by the winch motor 3 driving module 2. The specific type of the fourth rectifier unit can be set according to actual needs, and no limitation is made to this.

[0176] The fifth rectifier unit is used for rectifying the electric energy output by the third secondary side winding of the second transformer T2, so as to output the third voltage and the fourth voltage required by the winch motor 3 driving module 2. The specific type of the fifth rectifier unit can be set according to actual needs, and no limitation is made to this.

[0177] The second control unit 113 is used for controlling the on-off of the second switch unit 111, so as to make the power output ends of the third rectifier unit 112, the fourth rectifier unit and the fifth rectifier unit output the third voltage and the fourth voltage respectively. The specific type of the second control unit 113 can be set according to actual needs, and no limitation is made to this.

[0178] As shown in FIG. Figure 5 In some embodiments, the second switch unit 111 includes a second MOS tube Q2, the second MOS tube Q2 is N type, the drain of the second MOS tube Q2 is connected with the second end of the primary side winding of the second transformer T2, and the source of the second MOS tube Q2 is grounded. The second control unit 113 includes a second control chip U5, a twenty-fifth resistor R25, a twenty-sixth resistor R26 and a thirtieth capacitor C30.

[0179] The first end of the twenty-fifth resistor R25 is connected with the driving output pin of the second control chip U5, and the second end of the twenty-fifth resistor R25 is connected with the gate of the second MOS tube Q2 as the control output end of the second control unit 113.

[0180] It can be understood that, since the power input pin of the second control chip U5 is connected with the second power output end of the first conversion module 9 as the power input end of the second control unit 113, the first conversion module 9 can supply power for the second control chip U5, thereby ensuring the stable operation of the second control chip U5.

[0181] Since the first end of the twenty-fifth resistor R25 is connected with the driving output pin of the second control chip U5, and the second end of the twenty-fifth resistor R25 is connected with the gate of the second MOS tube Q2 as the control output end of the second control unit 113, the second control chip U5 can control the gate voltage of the second MOS tube Q2 by using the twenty-fifth resistor R25, thereby controlling the on-off of the drain and source of the second MOS tube Q2. In addition, since the drain of the second MOS tube Q2 is connected with the second end of the primary side winding of the second transformer T2, and the source of the second MOS tube Q2 is grounded, under the control of the second control chip U5, the high-frequency alternating current output of the first secondary side winding, the second secondary side winding and the third secondary side winding of the second transformer T2 can be realized.

[0182] Since the first end of the twenty-sixth resistor R26 is connected with the reference voltage pin of the second control chip U5, and the second end of the twenty-sixth resistor R26 is connected with the oscillator timing resistor capacitor pin of the second control chip U5, and the first end of the thirtieth capacitor C30 is connected with the second end of the twenty-sixth resistor R26, and the second end of the thirtieth capacitor C30 is grounded, the twenty-sixth resistor R26 and the thirtieth capacitor C30 constitute an oscillation circuit under the switching control of the second control chip U5, thereby ensuring the accurate control of the second control chip U5 on the second MOS tube Q2.

[0183] It should be noted that the second control chip U5 is used to control the on-off of the second MOS tube Q2, the specific type of the second control chip U5 can be set according to actual needs, which is not limited, for example, the second control chip U5 can be a UC3842 chip, the second control chip U5 has a first pin (a compensation pin), a second pin (a feedback pin), a third pin (a current detection pin), a fourth pin (an oscillator timing resistor capacitor pin), a fifth pin (a ground pin), a sixth pin (a driving output pin), a seventh pin (a power input pin) and an eighth pin (a reference voltage pin).

[0184] The second MOS tube Q2 is used as a switching device, which is turned on and off under the control of the second control unit 113, so as to realize the high-frequency alternating current output of the second transformer T2, and the specific type of the second MOS tube Q2 can be set according to actual needs, which is not limited.

[0185] The specific type of the twenty-fifth resistor R25 can be set according to actual needs, which is not limited.

[0186] The specific type of the twenty-sixth resistor R26 can be set according to actual needs, which is not limited, for example, the twenty-sixth resistor R26 can be 10K.

[0187] The specific type of the thirtieth capacitor C30 can be set according to actual needs, which is not limited, for example, the thirtieth capacitor C30 can be 2200pF.

[0188] As Figure 4As shown, in some embodiments, the first rectifier unit 902 comprises a fourth diode D4, a third inductor L3, a fifteenth capacitor C15, a first voltage stabilizing chip U4, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18, a nineteenth capacitor C19 and a twenty-fourth capacitor C24, wherein the anode of the fourth diode D4 is connected to the first end of the first secondary side winding of the first transformer T1, the first end of the third inductor L3 is connected to the cathode of the fourth diode D4, the first end of the third inductor L3 is connected to the second end of the fourth diode D4, the first end of the fifteenth capacitor C15 is connected to the second end of the third inductor L3, the second end of the fifteenth capacitor C15 is connected to the second end of the first secondary side winding of the first transformer T1 and grounded, the input end of the first voltage stabilizing chip U4 is connected to the first end of the fifteenth capacitor C15, the ground end of the first voltage stabilizing chip U4 is connected to the second end of the fifteenth capacitor C15, the output end of the first voltage stabilizing chip U4 outputs the first voltage as the power output end of the first rectifier unit 902, the first end of the sixteenth capacitor C16 is connected to the first end of the third inductor L3, the second end of the sixteenth capacitor C16 is connected to the second end of the first secondary side winding of the first transformer T1, the first end of the seventeenth capacitor C17 is connected to the second end of the third inductor L3, the second end of the seventeenth capacitor C17 is connected to the second end of the sixteenth capacitor C16, the first end of the eighteenth capacitor C18 is connected to the output end of the first voltage stabilizing chip U4, the second end of the eighteenth capacitor C18 is connected to the ground end of the first voltage stabilizing chip U4, the first end of the nineteenth capacitor C19 is connected to the first end of the eighteenth capacitor C18, the second end of the nineteenth capacitor C19 is connected to the second end of the eighteenth capacitor C18, the first end of the twenty-fourth capacitor C24 is connected to the first end of the primary side winding of the first transformer T1, and the second end of the twenty-fourth capacitor C24 is connected to the second end of the first secondary side winding of the first transformer T1.

[0189] It can be understood that, due to the anode of the fourth diode D4 being connected to the first end of the first secondary side winding of the first transformer T1, the first end of the third inductor L3 being connected to the cathode of the fourth diode D4, the first end of the third inductor L3 being connected to the second end of the fourth diode D4, and the first end of the fifteenth capacitor C15 being connected to the second end of the third inductor L3, the second end of the fifteenth capacitor C15 being connected to the second end of the first secondary side winding of the first transformer T1 and grounded, the fourth diode D4 can rectify the high-frequency alternating current output by the first secondary side winding of the first transformer T1, and cooperate with the energy storage and filtering of the third inductor L3 and the fifteenth capacitor C15 to realize stable output of the first voltage.

[0190] Since the input end of the first voltage stabilizing chip U4 is connected with the first end of the fifteenth capacitor C15, and the grounding end of the first voltage stabilizing chip U4 is connected with the second end of the fifteenth capacitor C15, the output end of the first voltage stabilizing chip U4 outputs the first voltage as the power output end of the first rectifying unit 902, so that the first voltage stabilizing chip U4 can stabilize the rectified direct current, thereby ensuring the stable output of the first voltage.

[0191] Meanwhile, based on the arrangement of the sixteenth capacitor C16, the seventeenth capacitor C17, the eighteenth capacitor C18, the nineteenth capacitor C19 and the twenty-fourth capacitor C24, the power output end of the first rectifying unit 902 can realize energy storage filtering by using the sixteenth capacitor C16, the seventeenth capacitor C17, the eighteenth capacitor C18, the nineteenth capacitor C19 and the twenty-fourth capacitor C24, thereby further ensuring the stable output of the first voltage.

[0192] It should be noted that the fourth diode D4 is used to conduct in the direction from the first end of the first secondary side winding of the first transformer T1 to the first end of the third inductor L3, and the specific type of the fourth diode D4 can be set according to actual needs, which is not limited.

[0193] The specific type of the third inductor L3 can be set according to actual needs, which is not limited. For example, the third inductor L3 can be 100μH.

[0194] The specific types of the fifteenth capacitor C15, the sixteenth capacitor C16, the seventeenth capacitor C17, the eighteenth capacitor C18, the nineteenth capacitor C19 and the twenty-fourth capacitor C24 can be set according to actual needs, which are not limited. For example, the fifteenth capacitor C15 can be 0.1μF, the sixteenth capacitor C16 can be 100μF, the seventeenth capacitor C17 can be 100μF, the eighteenth capacitor C18 can be 100μF, the nineteenth capacitor C19 can be 0.1μF, and the twenty-fourth capacitor C24 can be 2200P.

[0195] The specific type of the first voltage stabilizing chip U4 can be set according to actual needs, which is not limited. For example, the first voltage stabilizing chip U4 can be a 7815 chip, and the first voltage stabilizing chip U4 has a first pin (input pin), a second pin (grounding pin) and a third pin (output pin).

[0196] As shown in FIG. 1, the first rectifying unit 902 includes a first transformer T1, a second transformer T2, a third inductor L3, a fourth diode D4, a fifth diode D5, a sixth diode D6, a seventh diode D7, an eighth diode D8, a ninth diode D9, a tenth diode D10, an eleventh diode D11, a twelfth diode D12, a thirteenth diode D13, a fourteenth diode D14, a fifteenth capacitor C15, a sixteenth capacitor C16, a seventeenth capacitor C17, an eighteenth capacitor C18, a nineteenth capacitor C19, a twentieth capacitor C20, a twenty-first capacitor C21, a twenty-second capacitor C22, a twenty-third capacitor C23 and a twenty-fourth capacitor C24. Figure 4As shown, in some embodiments, the second rectifying unit 903 comprises a fifth diode D5, a fourth inductor L4, a twentieth capacitor C20, a twenty-first capacitor C21, a twenty-second capacitor C22, a twenty-third capacitor C23, a sixth diode D6 and a sixteenth resistor R16, wherein an anode of the fifth diode D5 is connected with a first end of the second secondary winding of the first transformer T1, a first end of the fourth inductor L4 is connected with a cathode of the fifth diode D5, a first end of the twentieth capacitor C20 is connected with a second end of the fourth inductor L4, a second end of the twentieth capacitor C20 is connected with a second end of the second secondary winding of the first transformer T1 and grounded, the first end of the twentieth capacitor C20 outputs a second voltage as a power output end of the second rectifying unit 903, a first end of the twenty-first capacitor C21 is connected with the cathode of the fifth diode D5, and a second end of the twenty-first capacitor C21 is connected with the second end of the second secondary winding of the first transformer T1, a first end of the twenty-second capacitor C22 is connected with the first end of the twenty-first capacitor C21, a second end of the twenty-second capacitor C22 is connected with the second end of the twenty-first capacitor C21, a first end of the twenty-third capacitor C23 is connected with the first end of the twentieth capacitor C20, a second end of the twenty-third capacitor C23 is connected with the second end of the twentieth capacitor C20, the sixth diode D6 is a light emitting diode, an anode of the sixth diode D6 is connected with the first end of the twentieth capacitor C20, a first end of the sixteenth resistor R16 is connected with a cathode of the sixth diode D6, and a second end of the sixteenth resistor R16 is connected with the second end of the twentieth capacitor C20.

[0197] It can be understood that, since the anode of the fifth diode D5 is connected with the first end of the second secondary winding of the first transformer T1, the first end of the fourth inductor L4 is connected with the cathode of the fifth diode D5, the first end of the twentieth capacitor C20 is connected with the second end of the fourth inductor L4, the second end of the twentieth capacitor C20 is connected with the second end of the second secondary winding of the first transformer T1 and grounded, and the first end of the twentieth capacitor C20 outputs the second voltage as the power output end of the second rectifying unit 903, the fifth diode D5 can rectify the high-frequency alternating current output by the second secondary winding of the first transformer T1, and the energy storage and filtering of the fourth inductor L4 and the twentieth capacitor C20 are cooperated to realize the stable output of the second voltage.

[0198] Since the first terminal of the twenty-first capacitor C21 is connected to the cathode of the fifth diode D5, and the second terminal of the twenty-first capacitor C21 is connected to the second terminal of the second secondary winding of the first transformer T1, the first terminal of the twenty-second capacitor C22 is connected to the first terminal of the twenty-first capacitor C21, the second terminal of the twenty-second capacitor C22 is connected to the second terminal of the twenty-first capacitor C21, the first terminal of the twenty-third capacitor C23 is connected to the first terminal of the twentieth capacitor C20, and the second terminal of the twenty-third capacitor C23 is connected to the second terminal of the twentieth capacitor C20, the power output terminal of the second rectifier unit 903 can utilize the twenty-first capacitor C21, the twenty-second capacitor C22, and the twenty-third capacitor C23 to achieve energy storage and filtering, thereby further ensuring the stable output of the second voltage.

[0199] Since the sixth diode D6 is a light-emitting diode, and the anode of the sixth diode D6 is connected to the first terminal of the twentieth capacitor C20, the first terminal of the sixteenth resistor R16 is connected to the cathode of the sixth diode D6, and the second terminal of the sixteenth resistor R16 is connected to the second terminal of the twentieth capacitor C20, the sixth diode D6 and the sixteenth resistor R16 can work together to achieve light-emitting indication when the power output terminal of the second rectifier unit 903 outputs the second voltage, thus making the power conversion module more convenient to use.

[0200] It should be noted that the fifth diode D5 is used for unidirectional conduction along the direction from the first end of the second secondary winding of the first transformer T1 to the first end of the fourth inductor L4. The specific type of the fifth diode D5 can be set according to actual needs and there are no restrictions on it.

[0201] The specific type of the fourth inductor L4 can be set according to actual needs and there are no restrictions on it. For example, the fourth inductor L4 can be 100μH.

[0202] The specific types of the twentieth capacitor C20, the twenty-first capacitor C21, the twenty-second capacitor C22, and the twenty-third capacitor C23 can be set according to actual needs and are not restricted. For example, the twentieth capacitor C20 can be 0.1μF, the twenty-first capacitor C21 can be 100μF, the twenty-second capacitor C22 can be 0.1μF, and the twenty-third capacitor C23 can be 100μF.

[0203] The sixth diode D6 is used to conduct and emit light unidirectionally along the direction from the first terminal of the twentieth capacitor C20 to the first terminal of the sixteenth resistor R16. The specific type of the sixth diode D6 can be set according to actual needs and there is no restriction on it.

[0204] The specific type of the sixteenth resistor R16 can be set according to actual needs and there are no restrictions on it. For example, the sixteenth resistor R16 can be 10K.

[0205] Among them, the first end of the thirteenth resistor R13 can be connected to the first end of the fourth inductor L4.

[0206] like Figure 5 As shown, in some embodiments, the second control unit 113 further includes: a ninth diode D9, a tenth diode D10, a twenty-seventh resistor R27, a thirty-first capacitor C31, a thirty-second capacitor C32, a thirty-third capacitor C33, a thirty-fourth capacitor C34, a twenty-eighth resistor R28, an eleventh diode D11, a twenty-ninth resistor R29, a thirtieth resistor R30, a thirty-first resistor R31, a thirty-fifth capacitor C35, a thirty-second resistor R32, a thirty-sixth capacitor C36, a transistor Q3, a thirty-third resistor R33, a thirty-fourth resistor R34, an optocoupler P1, a twelfth diode D12, a thirteenth diode D13, and a thirty-fifth resistor R35.

[0207] The ninth diode D9 is a voltage stabilizing diode, the cathode of the ninth diode D9 is connected with the second power output end of the first conversion module 9, the twelfth diode D10 is a voltage stabilizing diode, the cathode of the twelfth diode D10 is connected with the anode of the ninth diode D9, the first end of the twenty-seventh resistor R27 is connected with the anode of the ninth diode D9, the first end of the thirty-first capacitor C31 is connected with the second end of the twenty-seventh resistor R27, the second end of the thirty-first capacitor C31 is grounded, the first end of the thirty-second capacitor C32 is connected with the first end of the thirty-first capacitor C31 and the power input pin of the second control chip U5 respectively, the second end of the thirty-second capacitor C32 is grounded; the first end of the thirty-third capacitor C33 is connected with the reference voltage pin of the second control chip U5, and the second end of the thirty-third capacitor C33 is grounded; the first end of the thirty-fourth capacitor C34 is connected with the second power output end of the first conversion module 9, the first end of the twenty-eighth resistor R28 is connected with the first end of the thirty-fourth capacitor C34, the second end of the twenty-eighth resistor R28 is connected with the second end of the thirty-fourth capacitor C34, the cathode of the eleventh diode D11 is connected with the second end of the twenty-eighth resistor R28, the anode of the eleventh diode D11 is connected with the drain of the second MOS Q2; the second end of the twenty-ninth resistor R29 is grounded, the first end of the thirtieth resistor R30 is connected with the first end of the twenty-ninth resistor R29, the second end of the thirtieth resistor R30 is connected with the second end of the twenty-ninth resistor R29, the first end of the thirty-first resistor R31 is connected with the source of the second MOS Q2, the second end of the thirty-first resistor R31 is connected with the current detection pin of the second control chip U5, the first end of the thirty-fifth capacitor C35 is connected with the second end of the thirty-first resistor R31, the second end of the thirty-fifth capacitor C35 is grounded; the first end of the thirty-second resistor R32 is connected with the reference voltage pin of the second control chip U5, and the second end of the thirty-second resistor R32 is connected with the feedback pin of the second control chip U5, the first end of the thirty-sixth capacitor C36 is connected with the second end of the thirty-second resistor R32, the second end of the thirty-sixth capacitor C36 is grounded, the transistor Q3 is NPN type, the collector of the transistor Q3 is connected with the second end of the thirty-second resistor R32, the emitter of the transistor Q3 is connected with the second end of the thirty-sixth capacitor C36.The first end of the thirty-third resistor R33 is connected with the first end of the power output end of the third rectifier unit 112, and the first end of the thirty-fourth resistor R34 is connected with the first end of the thirty-third resistor R33. The input side anode of the photo-coupler P1 is connected with the second end of the thirty-fourth resistor R34, and the input side cathode of the photo-coupler P1 is connected with the second end of the thirty-third resistor R33. The anode of the tenth diode D12 is connected with the second end of the power output end of the third rectifier unit 112, the anode of the thirteenth diode D13 is connected with the cathode of the tenth diode D12, and the cathode of the thirteenth diode D13 is connected with the input side cathode of the photo-coupler P1. The output side collector of the photo-coupler P1 is connected with the compensation pin of the second control chip U5, the output side emitter of the photo-coupler P1 is connected with the base of the triode Q3, the first end of the thirty-fifth resistor R35 is connected with the base of the triode Q3, and the second end of the thirty-fifth resistor R35 is grounded.

[0208] It can be understood that, since the cathode of the ninth diode D9 is connected with the second power output end of the first conversion module 9, the cathode of the twelfth diode D10 is connected with the anode of the ninth diode D9, and the first end of the twenty-seventh resistor R27 is connected with the anode of the ninth diode D9, the second power output end of the first conversion module 9 can realize voltage clamping by cooperation of the ninth diode D9 and the twelfth diode D10, and realize stable power supply to the second control chip U5 by the twenty-seventh resistor R27.

[0209] Since the first end of the thirty-first capacitor C31 is connected with the second end of the twenty-seventh resistor R27, and the second end of the thirty-first capacitor C31 is grounded, the first end of the thirty-second capacitor C32 is connected with the first end of the thirty-first capacitor C31 and the power input pin of the second control chip U5 respectively, and the second end of the thirty-second capacitor C32 is grounded, the power input pin of the second control chip U5 can realize voltage stabilization filtering by the thirty-first capacitor C31 and the thirty-second capacitor C32, thereby ensuring stable operation of the second control chip U5.

[0210] Since the first end of the thirty-third capacitor C33 is connected with the reference voltage pin of the second control chip U5, and the second end of the thirty-third capacitor C33 is grounded, the reference voltage pin of the second control chip U5 can realize voltage stabilization filtering by the thirty-third capacitor C33, thereby ensuring stable operation of the second control chip U5.

[0211] Since the first end of the thirty-fourth capacitor C34 is connected with the second power output end of the first conversion module 9, and the first end of the twenty-eighth resistor R28 is connected with the first end of the thirty-fourth capacitor C34, the second end of the twenty-eighth resistor R28 is connected with the second end of the thirty-fourth capacitor C34, the cathode of the eleventh diode D11 is connected with the second end of the twenty-eighth resistor R28, and the anode of the eleventh diode D11 is connected with the drain of the second MOS Q2, the thirty-fourth capacitor C34, the twenty-eighth resistor R28 and the eleventh diode D11 form an absorption circuit, so as to absorb voltage spikes and ensure stable operation of the second transformer T2.

[0212] Since the twenty-ninth resistor R29 is connected in series between the source of the second MOS Q2 and the ground, the first end of the thirtieth resistor R30 is connected with the first end of the twenty-ninth resistor R29, the second end of the thirtieth resistor R30 is connected with the second end of the twenty-ninth resistor R29, the first end of the thirty-first resistor R31 is connected with the source of the second MOS Q2, the second end of the thirty-first resistor R31 is connected with the current detection pin of the second control chip U5, the first end of the thirty-fifth capacitor C35 is connected with the second end of the thirty-first resistor R31, and the second end of the thirty-fifth capacitor C35 is grounded, so that the current detection pin of the second control chip U5 can collect the current of the second MOS Q2 by cooperation of the twenty-ninth resistor R29, the thirtieth resistor R30, the thirty-first resistor R31 and the thirty-fifth capacitor C35, so as to realize overcurrent protection of the second MOS Q2 based on the collected current of the second MOS Q2, and ensure stable operation of the power conversion module.

[0213] The power output end of the third rectifier unit 112 supplies power to the input end of the optocoupler P1 by cooperation of the thirty-third resistor R33 and the thirty-fourth resistor R34, and the tenth diode D12 and the thirteenth diode D13, and when the input end voltage of the optocoupler P1 rises to a preset voltage, the output end of the optocoupler P1 is turned on, so as to realize feedback to the compensation pin of the second control chip U5, and then the second control chip U5 can control the duty cycle of the output pin according to the voltage of the compensation pin, so as to realize precise output of voltage.

[0214] When the output end of the optocoupler P1 is turned on, the emitter and the collector of the transistor Q3 are turned on and the thirty-sixth capacitor C36 is short-circuited, and when the output end of the optocoupler P1 cannot be turned on all the time, the transistor Q3 is turned off, and then the reference voltage pin of the second control chip U5 charges the thirty-sixth capacitor C36 by the thirty-second resistor R32, until the voltage of the feedback pin of the second control chip U5 rises to a critical voltage, the output pin of the second control chip U5 stops outputting, so as to realize device protection and avoid damage.

[0215] It should be noted that the ninth diode D9 and the twelfth diode D10 are respectively voltage stabilizing diodes for voltage clamping between the second power output end of the first conversion module 9 and the power input pin of the second control chip U5, and the specific types of the ninth diode D9 and the twelfth diode D10 can be set according to actual needs, and no limitation is made to this.

[0216] The specific type of the twenty-seventh resistor R27 can be set according to actual needs, and no limitation is made to this.

[0217] The specific types of the thirty-first capacitor C31, the thirty-second capacitor C32 and the thirty-third capacitor C33 can be set according to actual needs, and no limitation is made to this. For example, the thirty-first capacitor C31 can be 100 μF, the thirty-second capacitor C32 can be 0.1 μF, and the thirty-third capacitor C33 can be 0.1 μF.

[0218] The specific type of the thirty-fourth capacitor C34 can be set according to actual needs, and no limitation is made to this. For example, the thirty-fourth capacitor C34 can be 4700 pF.

[0219] The specific type of the twenty-eighth resistor R28 can be set according to actual needs, and no limitation is made to this. For example, the twenty-eighth resistor R28 can be 1K.

[0220] The eleventh diode D11 is used for unidirectional conduction in the direction from the drain of the second MOS tube Q2 to the second end of the twenty-eighth resistor R28, and the specific type of the eleventh diode D11 can be set according to actual needs, and no limitation is made to this.

[0221] The specific type of the thirty-fifth capacitor C35 can be set according to actual needs, and no limitation is made to this. For example, the thirty-fifth capacitor C35 can be 470 pF.

[0222] The specific types of the twenty-ninth resistor R29 and the thirtieth resistor R30 can be set according to actual needs, and no limitation is made to this.

[0223] The specific type of the thirty-first resistor R31 can be set according to actual needs, and no limitation is made to this. For example, the thirty-first resistor R31 can be 1K.

[0224] The specific types of the thirty-second resistor R32, the thirty-third resistor R33, the thirty-fourth resistor R34 and the thirty-fifth resistor R35 can be set according to actual needs, and no limitation is made to this. For example, the thirty-second resistor R32 can be 47K, the thirty-third resistor R33 can be 1K, the thirty-fourth resistor R34 can be 2K, and the thirty-fifth resistor R35 can be 1K.

[0225] The specific type of the thirty-sixth capacitor C36 can be set according to actual needs and there are no restrictions on it. For example, the thirty-sixth capacitor C36 can be 0.1μF.

[0226] Transistor Q3 is used in conjunction with capacitor C36 to achieve linkage with optocoupler P1, thereby protecting the second control chip U5. The specific type of transistor Q3 can be set according to actual needs and is not restricted.

[0227] Optocoupler P1 is used for isolation and voltage feedback between the second control chip U5 and the third rectifier unit 112. The specific type of optocoupler P1 can be set according to actual needs and there are no restrictions on it.

[0228] The twelfth diode D12 is used for unidirectional conduction along the direction from the second terminal of the power output terminal of the third rectifier unit 112 to the anode of the thirteenth diode D13. The thirteenth diode D13 is used for unidirectional conduction along the direction from the cathode of the twelfth diode D12 to the cathode of the input side of the optocoupler P1. The specific types of the twelfth diode D12 and the thirteenth diode D13 can be set according to actual needs and there are no restrictions on them.

[0229] like Figure 6 As shown, in some embodiments, the third rectifier unit 112, the fourth rectifier unit, and the fifth rectifier unit respectively include: the fourteenth diode D14, the thirty-seventh capacitor C37, the second voltage regulator chip U6, the thirty-eighth capacitor C38, the thirty-ninth capacitor C39, the fortieth capacitor C40, the forty-first capacitor C41, and the fifteenth diode D15.

[0230] The anode of the fourteenth diode D14 in the third rectifying unit 112 is connected with the first end of the first secondary side winding of the second transformer T2, the anode of the fourteenth diode D14 in the fourth rectifying unit is connected with the first end of the second secondary side winding of the second transformer T2, and the anode of the fourteenth diode D14 in the fifth rectifying unit is connected with the first end of the third secondary side winding of the second transformer T2; the first end of the thirty-seventh capacitor C37 is connected with the cathode of the fourteenth diode D14, and the second end of the thirty-seventh capacitor C37 in the third rectifying unit 112 is connected with the second end of the first secondary side winding of the second transformer T2 and grounded, the second end of the thirty-seventh capacitor C37 in the fourth rectifying unit is connected with the second end of the second secondary side winding of the second transformer T2 and grounded, and the second end of the thirty-seventh capacitor C37 in the fifth rectifying unit is connected with the second end of the third secondary side winding of the second transformer T2 and grounded; the input end of the second voltage stabilizing chip U6 is connected with the first end of the thirty-seventh capacitor C37, the grounding end of the second voltage stabilizing chip U6 is grounded, and the output end of the second voltage stabilizing chip U6 outputs the fourth voltage as the first power output end of the rectifying unit; the first end of the thirty-eighth capacitor C38 is connected with the output end of the second voltage stabilizing chip U6, the second end of the thirty-eighth capacitor C38 is connected with the grounding end of the second voltage stabilizing chip U6, the first end of the thirty-ninth capacitor C39 is connected with the grounding end of the second voltage stabilizing chip U6, the second end of the thirty-ninth capacitor C39 is connected with the second end of the thirty-seventh capacitor C37, the first end of the fourth zero capacitor C40 is connected with the first end of the thirty-eighth capacitor C38, the second end of the fourth zero capacitor C40 is connected with the second end of the thirty-eighth capacitor C38, the first end of the fourth one capacitor C41 is connected with the first end of the thirty-ninth capacitor C39, and the second end of the fourth one capacitor C41 is connected with the second end of the thirty-ninth capacitor C39; the anode of the fifteenth diode D15 is a voltage stabilizing diode, the anode of the fifteenth diode D15 is connected with the second end of the fourth one capacitor C41, the cathode of the fifteenth diode D15 is connected with the first end of the fourth one capacitor C41, and the anode of the fifteenth diode D15 outputs the third voltage as the second power output end of the rectifying unit.

[0231] It can be understood that, for the third rectifying unit 112, the high-frequency alternating current output by the first secondary side winding of the first transformer T1 is rectified by the fourth diode D4, and in cooperation with the thirty-seventh capacitor C37, the second voltage stabilizing chip U6, the thirty-eighth capacitor C38, the thirty-ninth capacitor C39, the fourth zero capacitor C40, the fourth one capacitor C41 and the fifteenth diode D15, the output of the third voltage and the fourth voltage is realized, thereby meeting the power demand of the capstan motor 3 driving module 2.

[0232] For the fourth rectifying unit, the high-frequency alternating current output by the second secondary winding of the first transformer T1 is rectified by the fourth diode D4, and the third voltage and the fourth voltage are output by cooperating the thirty-seventh capacitor C37, the second voltage stabilizing chip U6, the thirty-eighth capacitor C38, the thirty-ninth capacitor C39, the fortieth capacitor C40, the forty-first capacitor C41 and the fifteenth diode D15, so as to meet the power demand of the winch motor 3 driving module 2.

[0233] For the fifth rectifying unit, the high-frequency alternating current output by the third secondary winding of the first transformer T1 is rectified by the fourth diode D4, and the third voltage and the fourth voltage are output by cooperating the thirty-seventh capacitor C37, the second voltage stabilizing chip U6, the thirty-eighth capacitor C38, the thirty-ninth capacitor C39, the fortieth capacitor C40, the forty-first capacitor C41 and the fifteenth diode D15, so as to meet the power demand of the winch motor 3 driving module 2.

[0234] Among them, by cooperating the voltage conversion of the second transformer T2 and the third rectifying unit 112, the fourth rectifying unit and the fifth rectifying unit, three groups of isolated third voltage and fourth voltage are realized, so as to ensure the safe and stable operation of the winch motor 3 driving module 2.

[0235] It should be noted that the fourteenth diode D14 is used for unidirectional conduction from the first end of the secondary winding of the second transformer T2 to the first end of the thirty-seventh capacitor C37, and the fifteenth diode D15 is used for unidirectional conduction from the second end of the forty-first capacitor C41 to the first end of the forty-first capacitor C41. The specific types of the fourteenth diode D14 and the fifteenth diode D15 can be set according to actual needs, and this is not limited.

[0236] The specific types of the thirty-seventh capacitor C37, the thirty-eighth capacitor C38, the thirty-ninth capacitor C39, the fortieth capacitor C40 and the forty-first capacitor C41 can be set according to actual needs, and this is not limited. For example, the thirty-seventh capacitor C37 can be 100μF, the thirty-eighth capacitor C38 can be 100μF, the thirty-ninth capacitor C39 can be 100μF, the fortieth capacitor C40 can be 0.1μF, and the forty-first capacitor C41 can be 0.1μF.

[0237] The specific type of the second voltage stabilizing chip U6 can be set according to actual needs, and this is not limited. For example, the second voltage stabilizing chip U6 can be a 7815 chip, and the second voltage stabilizing chip U6 has a first pin (input pin), a second pin (ground pin) and a third pin (output pin).

[0238] The first end of the thirty-third resistor R33 can be connected with the input end of the second voltage stabilizing chip U6, and the anode of the tenth diode D12 can be connected with the second end of the thirty-seventh capacitor C37.

[0239] As shown in FIG. 13, in some embodiments, the second conversion module 10 comprises a third control chip U7, a thirty-sixth resistor R36, a fifth inductor L5, a forty-second capacitor C42, a sixteenth diode D16, a forty-third capacitor C43, a thirty-seventh resistor R37 and a thirty-eighth resistor R38. Figure 7

[0240] The power input pin of the third control chip U7 is connected with the second power output end of the first conversion module 9, and the first end of the thirty-sixth resistor R36 is connected with the power input pin of the third control chip U7. The second end of the thirty-sixth resistor R36 is connected with the soft start capacitor pin of the third control chip U7, the peak current limit pin of the third control chip U7 and the duty ratio control pin of the third control chip U7 respectively. The first end of the fifth inductor L5 is connected with the feedback pin of the third control chip U7, and the second end of the fifth inductor L5 is grounded. The first end of the forty-second capacitor C42 is connected with the timing capacitor pin of the third control chip U7, and the second end of the forty-second capacitor C42 is connected with the ground pin of the third control chip U7. The sixteenth diode D16 is a voltage stabilizing diode. The cathode of the sixteenth diode D16 is connected with the first end of the fifth inductor L5. The first end of the forty-third capacitor C43 is connected with the anode of the sixteenth diode D16 and the second end of the forty-second capacitor C42 respectively. The second end of the forty-third capacitor C43 is connected with the second end of the fifth inductor L5. The first end of the forty-third capacitor C43 is used as the power output end of the second conversion module 10 to output the third voltage. The first end of the thirty-seventh resistor R37 is connected with the current detection input pin of the third control chip U7, and the second end of the thirty-seventh resistor R37 is connected with the second end of the fifth inductor L5. The first end of the thirty-eighth resistor R38 is connected with the first end of the thirty-seventh resistor R37, and the second end of the thirty-eighth resistor R38 is connected with the ground pin of the third control chip U7.

[0241] It can be understood that, since the power input pin of the third control chip U7 is connected with the second power output end of the first conversion module 9, the first conversion module 9 can supply power to the third control chip U7, thereby ensuring the stable operation of the third control chip U7.

[0242] ​The second end of the thirty-sixth resistor R36 is connected with the soft start capacitor pin of the third control chip U7, the peak current limiting pin of the third control chip U7 and the duty cycle control pin of the third control chip U7 respectively, so that the first conversion module 9 can supply power to the soft start capacitor pin of the third control chip U7, the peak current limiting pin of the third control chip U7 and the duty cycle control pin of the third control chip U7 by using the thirty-sixth resistor R36, thereby ensuring the stable operation of the third control chip U7.

[0243] The third control chip U7 realizes the output of the third voltage by using the cooperation of the fifth inductor L5, the forty-second capacitor C42, the sixteenth diode D16 and the forty-third capacitor C43, thereby meeting the power demand of the winch motor 3 driving module 2.

[0244] The first end of the thirty-seventh resistor R37 is connected with the current detection input pin of the third control chip U7, the second end of the thirty-seventh resistor R37 is connected with the second end of the fifth inductor L5, the first end of the thirty-eighth resistor R38 is connected with the first end of the thirty-seventh resistor R37, and the second end of the thirty-eighth resistor R38 is connected with the ground pin of the third control chip U7, so that the third control chip U7 can realize the sampling of the output voltage by using the voltage division of the thirty-seventh resistor R37 and the thirty-eighth resistor R38, thereby facilitating the realization of closed-loop control and ensuring the accurate output of voltage.

[0245] It should be noted that the third control chip U7 is used to control the charging and discharging of the fifth inductor L5, the forty-second capacitor C42 and the forty-third capacitor C43, and realize the conversion of the voltage of the second power output end of the first conversion module 9 to the third voltage. The specific type of the third control chip U7 can be set according to actual needs, which is not limited, for example, the third control chip U7 can be an MC33063 chip, and the third control chip U7 has a first pin (soft start capacitor pin), a second pin (feedback pin), a third pin (timing capacitor pin), a fourth pin (ground pin), a fifth pin (current detection input pin), a sixth pin (power input pin), a seventh pin (peak current limiting pin) and an eighth pin (duty cycle control pin).

[0246] The specific type of the thirty-sixth resistor R36 can be set according to actual needs, which is not limited, for example, the thirty-sixth resistor R36 can be 1R.

[0247] The specific type of the fifth inductor L5 can be set according to actual needs, which is not limited, for example, the fifth inductor L5 can be 22μH.

[0248] The specific types of the forty-second capacitor C42 and the forty-third capacitor C43 can be set according to actual needs, and are not limited, for example, the forty-second capacitor C42 can be 1000 pF, and the forty-third capacitor C43 can be 100 pF.

[0249] The sixteenth diode D16 is used for unidirectional conduction in the direction from the first end of the forty-third capacitor C43 to the first end of the fifth inductor L5, and the specific type of the sixteenth diode D16 can be set according to actual needs, and is not limited.

[0250] The specific types of the thirty-seventh resistor R37 and the thirty-eighth resistor R38 can be set according to actual needs, and are not limited, for example, the thirty-seventh resistor R37 can be 4.7K, and the thirty-eighth resistor R38 can be 1K.

[0251] It should be noted that in the description of the present disclosure, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0252] Any process or method descriptions in flow charts or described elsewhere herein can be understood as representing code modules, segments, or portions of code that include one or more executable instructions for implementing specific logic functions or other processes, and the various embodiments of the present disclosure include additional implementations in which the functions described with or without reference to flow charts are implemented with less than all of the steps shown or discussed, in a different order, with additional steps, or with fewer steps, and the like.

[0253] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0254] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present disclosure, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A high pressure winch based on field weakening control, characterized in that, The high-voltage winch comprises: a winch body; a winch motor, a power output end of the winch motor and a power input end of the winch body are in transmission connection; a driving module, a power input end of the driving module and a power output end of a high-voltage power supply are connected, and a power output end of the driving module and a power input end of the winch motor are connected; a control module, a signal output end of the control module and a signal input end of the driving module are connected, and the control module is used for controlling a voltage of the winch motor by using the driving module, so that a rotating speed of the winch motor reaches a target rotating speed, and when the voltage of the winch motor reaches an output voltage of the high-voltage power supply and the rotating speed of the winch motor does not reach the target rotating speed, the control module is further used for controlling a field weakening current of the winch motor by using the driving module until the rotating speed of the winch motor reaches the target rotating speed.

2. The high pressure winch based on the flux weakening control according to claim 1, characterized in that, The high-voltage winch further comprises: a first acquisition module, the first acquisition module is used for acquiring a running current of the winch motor; wherein, a signal input end of the control module and a signal output end of the first acquisition module are connected, and the control module is used for increasing the voltage of the winch motor by using the driving module until the voltage of the winch motor reaches the output voltage of the high-voltage power supply when a preset current is greater than the running current.

3. The high pressure winch based on the flux weakening control according to claim 1, characterized in that, The high-voltage winch further comprises: a second acquisition module, the second acquisition module is used for acquiring a running rotating speed of the winch motor; wherein, a signal input end of the control module and a signal output end of the second acquisition module are connected, and the control module is used for controlling the voltage of the winch motor according to the running rotating speed, and controlling the field weakening current of the winch motor according to the running rotating speed until the running rotating speed of the winch motor reaches the target rotating speed.

4. The high pressure winch based on field weakening control according to claim 1, characterized in that, The control module is further used for fitting a rotating speed and torque mapping relationship of the winch motor according to a series excited motor characteristic, and controlling the torque of the winch motor based on the fitted rotating speed and torque mapping relationship and according to the rotating speed of the winch motor.

5. The high pressure winch based on the flux weakening control according to claim 1, characterized in that, The high-voltage winch further comprises: a boost module, the boost module comprises: a first charge-discharge unit and a boost chip, a power input end of the first charge-discharge unit and a power output end of a low-voltage power supply are connected, and a control output end of the boost chip and a control input end of the first charge-discharge unit are connected, the boost chip is used for controlling charge-discharge of the first charge-discharge unit, so that a voltage of a power output end of the first charge-discharge unit is not less than a fifth voltage; a buck module, the buck module comprises: a second charge-discharge unit and a buck chip, a power input end of the second charge-discharge unit and a power output end of the first charge-discharge unit are connected, and a control output end of the buck chip and a control input end of the second charge-discharge unit are connected, the buck chip is used for controlling charge-discharge of the second charge-discharge unit, so that a voltage of a power output end of the second charge-discharge unit is not greater than a first voltage; wherein, the first voltage is less than the fifth voltage, and a power input end of the control module and a power output end of the second charge-discharge unit are connected.

6. The high pressure winch based on field weakening control according to claim 1, characterized in that The high-voltage winch further comprises: a first conversion module, a power input end of the first conversion module is connected with a power output end of the high-voltage power supply, and the first conversion module is used for converting a power supply voltage of the power output end of the high-voltage power supply to output a first voltage at a first power output end and output a second voltage at a second power output end; a second conversion module, a power input end of the second conversion module is connected with the second power output end of the first conversion module, and the second conversion module is used for converting the second voltage of the second power output end of the first conversion module to output a third voltage at a power output end; a third conversion module, a power input end of the third conversion module is connected with the second power output end of the first conversion module, and the third conversion module is used for converting the second voltage of the second power output end of the first conversion module to output the third voltage and a fourth voltage at the first power output end, the second power output end and the third power output end respectively; wherein the first power output end of the first conversion module is connected with a power input end of the control module; the power output end of the second conversion module is connected with a first power input end of the driving module; the first power output end, the second power output end and the third power output end of the third conversion module are connected with the first power input end and a second power input end of the driving module respectively.

7. A high pressure capstan based on field weakening control according to claim 6, characterized in that The first conversion module comprises: a first transformer, a first switch unit, a first rectifier unit, a second rectifier unit and a first control unit; wherein a first end of a primary side winding of the first transformer is connected with the power output end of the high-voltage power supply, and the first switch unit is connected in series between a second end of the primary side winding of the first transformer and the ground; a power input end of the first rectifier unit is connected with a first secondary side winding of the first transformer, and a power output end of the first rectifier unit is connected with the power input end of the control module; a power input end of the second rectifier unit is connected with a second secondary side winding of the first transformer, and a power output end of the second rectifier unit is connected with the power input end of the second conversion module and the power input end of the third conversion module respectively; a power input end of the first control unit is connected with a third secondary side winding of the first transformer, and a control output end of the first control unit is connected with a control input end of the first switch unit, and the first control unit is used for controlling the on-off of the first switch unit to make the power output end of the first rectifier unit output the first voltage as the first power output end of the first conversion module, and make the power output end of the second rectifier unit output the second voltage as the second power output end of the first conversion module.

8. The high-voltage winch based on the flux weakening control according to claim 7, wherein the first switch unit comprises a first MOS tube, the first MOS tube is N-type, a drain of the first MOS tube is connected with the second end of the primary side winding of the first transformer, and a source of the first MOS tube is grounded. The first control unit comprises a first control chip, a seventh resistor, an eighth resistor and a tenth capacitor; The power input pin of the first control chip is connected to the third secondary side winding first end of the first transformer as the power input end of the first control unit, and the third secondary side winding second end of the first transformer is grounded. The first end of the seventh resistor is connected to the drive output pin of the first control chip, and the second end of the seventh resistor is connected to the gate of the first MOS tube as the control output end of the first control unit. The first end of the eighth resistor is connected to the reference voltage output pin of the first control chip, and the second end of the eighth resistor is connected to the oscillator timing resistor capacitor pin of the first control chip. The first end of the tenth capacitor is connected to the second end of the eighth resistor, and the second end of the tenth capacitor is grounded.

9. The high pressure winch based on the flux weakening control according to claim 6, characterized in that, The third conversion module comprises: a second transformer, a second switch unit, a third rectifier unit, a fourth rectifier unit, a fifth rectifier unit and a second control unit; The primary side winding first end of the second transformer is connected to the second power output end of the first conversion module, and the second switch unit is connected in series between the primary side winding second end of the second transformer and the ground. The power input end of the third rectifier unit is connected to the first secondary side winding of the second transformer, the first power output end of the third rectifier unit is connected to the first power input end of the drive module, and the second power output end of the third rectifier unit is connected to the second power input end of the drive module. The power input end of the fourth rectifier unit is connected to the second secondary side winding of the first transformer, the first power output end of the fourth rectifier unit is connected to the first power input end of the drive module, and the second power output end of the fourth rectifier unit is connected to the second power input end of the drive module. The power input end of the fifth rectifier unit is connected to the third secondary side winding of the second transformer, the first power output end of the fifth rectifier unit is connected to the first power input end of the drive module, and the second power output end of the fifth rectifier unit is connected to the second power input end of the drive module. The power input end of the second control unit is connected to the second power output end of the first conversion module, and the control output end of the second control unit is connected to the control input end of the second switch unit. The second control unit is used to control the on-off of the second switch unit, so that the first power output ends of the third rectifier unit, the fourth rectifier unit and the fifth rectifier unit output the third voltage respectively, and the second power output ends of the third rectifier unit, the fourth rectifier unit and the fifth rectifier unit output the fourth voltage respectively.

10. The high-voltage capstan based on the flux weakening control according to claim 9, characterized in that, The second switch unit comprises a second MOS tube, the second MOS tube is N type, and the drain of the second MOS tube is connected with a primary side winding second end of the second transformer, and the source of the second MOS tube is grounded; The second control unit comprises a second control chip, a twenty-fifth resistor, a twenty-sixth resistor and a thirtieth capacitor; The power input pin of the second control chip is used as the power input end of the second control unit and is connected with the second power output end of the first conversion module; The first end of the twenty-fifth resistor is connected with the drive output pin of the second control chip, the second end of the twenty-fifth resistor is used as the control output end of the second control unit and is connected with the gate of the second MOS tube; The first end of the twenty-sixth resistor is connected with the reference voltage output pin of the second control chip, and the second end of the twenty-sixth resistor is connected with the oscillator timing resistor capacitor pin of the second control chip; The first end of the thirtieth capacitor is connected with the second end of the twenty-sixth resistor, and the second end of the thirtieth capacitor is grounded.

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