Integrated oil pump motor controller
Through the design of integrated precharge unit, power unit and main control board, the problem of large space demand and high cost of oil pump control system is solved, and the effect of reducing costs and improving electromagnetic compatibility is achieved.
Patent Information
- Application Number
- CN202510357422.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2025-07-29
AI Technical Summary
In the prior art, there are problems of large space demand and high cost of oil pump control systems.
Design an integrated oil pump motor controller, including a precharge unit, a power unit and a main control board, limiting the inrush current through a precharge contactor and a precharge resistor, and the integrated design reduces the connection cable and external plug-ins, avoids damage to the power unit and the oil pump motor by the inrush current, and achieves precise control through the main control board.
It reduces material and assembly costs, saves installation space, improves electromagnetic compatibility, and ensures the stable operation of the controller in various electromagnetic environments.
Smart Images
Figure CN120389664A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of oil pump motor controllers, and in particular to an integrated oil pump motor controller. Background Art
[0002] A motor controller is an electronic device used to control the operating state of a motor, including starting, stopping, speed, torque, and direction, etc., and is widely used in industrial automation, electric vehicles, household appliances, robots and other fields. Generally, in complex motor drive systems (such as electric vehicles and industrial automation systems), the motor controller usually needs to work in cooperation with the PDU (Power Distribution Unit). The PDU is a device for power distribution and management, mainly used to distribute the input electric energy to multiple output terminals, and at the same time provide power monitoring, protection and management functions. In the motor drive system, the PDU is responsible for distributing the electric energy of the high-voltage battery or the power grid to the motor controller and other devices (such as air-conditioning compressors, DC-DC converters, etc.), and the motor controller is responsible for converting the distributed electric energy into a voltage and current suitable for the operation of the motor and controlling the operating state of the motor.
[0003] However, in the field of construction machinery, such as applications like mining trucks, hydraulic oil pumps are often used to drive the hydraulic system to achieve functions such as suspension adjustment, steering control, or providing hydraulic transmission. In order to reduce the overall weight and design cost of the equipment, the size design of the oil pump control system is required to be as compact as possible. Compared with a single motor controller system, introducing the PDU will significantly increase the space requirement of the system, thereby bringing a higher cost burden and subsequent maintenance costs. Summary of the Invention
[0004] The purpose of this application is to provide an integrated oil pump motor controller to solve the problems of large space requirement and high cost in the existing oil pump control system.
[0005] To solve the above technical problems, the following technical solutions are adopted in this application:
[0006] This application provides an integrated oil pump motor controller, including: a pre-charge unit, a power unit, and a main control board;
[0007] The first input terminal of the pre-charge unit is used to connect to the output terminal of the high-voltage battery, the second output terminal of the pre-charge unit is connected to the first input terminal of the power unit, and the pre-charge unit is used to limit the inrush current generated when the high-voltage battery is powered on and transfer the limited current to the power unit;
[0008] The second output terminal of the power unit is used to connect to the input terminal of the oil pump motor;
[0009] The first input terminal of the main control board is used to connect to the output terminal of the low-voltage battery. The second output terminal of the main control board is connected to the third input terminal of the power unit. The third output terminal of the main control board is connected to the third input terminal of the pre-charge unit.
[0010] The integrated oil pump motor controller of this solution integrates a pre-charge unit, a power unit, and a main control board. Among them, the pre-charge unit uses components such as a pre-charge contactor and a pre-charge resistor to limit the generation of inrush current, avoiding damage to the power unit and the oil pump motor caused by the inrush current generated when the high-voltage battery is powered on. The power unit receives the current from the pre-charge unit and can adjust the operating state of the oil pump motor according to the instructions of the main control board. The main control board is powered by the low-voltage battery and can send control instructions to the power unit according to the preset program and the information fed back by the sensors, thereby achieving precise control of the operating state of the oil pump motor.
[0011] Through the integrated design of this solution, the number of connecting cables and external plugins used is reduced. There is no need to configure an additional PDU (Power Distribution Unit), reducing material and assembly costs. At the same time, the integrated design helps to reduce electromagnetic interference, improves electromagnetic compatibility, and ensures the stable operation of the controller in various electromagnetic environments. In addition, the integrated design also reduces the number of independent components and saves installation space.
[0012] Optionally, the pre-charge unit includes a pre-charge contactor, a pre-charge resistor, and a main contactor. The pre-charge contactor is connected in series with the pre-charge resistor, the main contactor is connected in parallel with the pre-charge resistor, and the pre-charge contactor and the main contactor are respectively connected to the main control board for signal connection.
[0013] When the high-voltage battery is powered on, the pre-charge contactor closes, connecting the pre-charge resistor to the circuit to limit the current. When the power unit reaches the target voltage, the pre-charge contactor disconnects and the main contactor closes to complete the normal circuit connection.
[0014] Optionally, the power unit includes a DC bus capacitor, a drive board, and a power module. The DC bus capacitor is connected to the second output terminal of the pre-charge unit as the first input terminal of the power unit. The first input terminal of the drive board is connected to the second output terminal of the main control board as the third input terminal of the power unit. The power module is used to connect to the input terminal of the oil pump motor as the second output terminal of the power unit.
[0015] In this solution, a current-limiting resistor is used to pre-charge the DC bus capacitor. When the voltage of the DC bus capacitor reaches the target value, the pre-charge contactor disconnects and the main contactor closes to complete the normal circuit connection. The main control board controls the oil pump motor by controlling the drive board to output three-phase current, thereby realizing the adjustment of the operating state of the oil pump motor. The drive board receives command signals from the main control board, and these command signals include pulse width modulation signals for adjusting the motor speed, direction signals for controlling the motor rotation direction, torque setting signals, etc. The drive board can adjust and drive the power module according to these signals. The power module can convert the input high-voltage direct current into three-phase alternating current to drive the oil pump motor. In addition, the drive board can also transmit the IGBT fault signal detected by itself to the main control board.
[0016] Optionally, it further includes a monitoring component. The monitoring component is powered by the main control board and is signal-connected to the main control board. The monitoring component is powered by the main control board and establishes a signal connection with the main control board to achieve data transmission and receipt of control instructions.
[0017] Optionally, the monitoring component includes: a first voltage sensor for sampling the voltage at the first input end of the pre-charge unit, a first current sensor for sampling the current at the first input end of the pre-charge unit, a second voltage sensor for sampling the voltage at the second output end of the pre-charge unit, and a second current sensor for sampling the current at the second output end of the power unit.
[0018] In this solution, the main control board samples the voltages at the first input end and the second output end of the pre-charge unit through the first voltage sensor and the second voltage sensor. The current input at the first input end of the pre-charge unit is detected by the first current sensor. The output current of the power unit is detected by the second current sensor, thereby realizing the real-time monitoring of the operating state of the motor. Among them, as an optional implementation manner, the first voltage sensor and the second voltage sensor are integrated in the main control board.
[0019] Optionally, the monitoring component includes a temperature sensor for detecting the temperature of the power unit.
[0020] Heat may be generated during the operation of the drive board. If the temperature is too high, it will not only affect its performance but also may damage the surrounding electronic components. By using the temperature sensor to monitor the temperature of the power unit in real time, the main control board can timely detect potential overheating problems and take corresponding heat dissipation measures or shut down the motor to protect the system.
[0021] Optionally, the monitoring component includes a resolver, and the resolver is used to detect the operating state of the oil pump motor.
[0022] The resolver can accurately measure the absolute position of the rotor of the oil pump motor. By continuously monitoring the change in the position of the rotor, the resolver can calculate the rotational speed of the motor. According to the changing trend of the rotor position, the resolver can determine the rotation direction of the motor. In this solution, the main control board can obtain real-time data such as the rotational speed and direction of the oil pump motor through the resolver. When it is found that the data is abnormal, the main control board can take corresponding actions according to the preset fault handling strategy, such as stopping the motor operation, switching to the standby circuit, etc., to avoid damage to the motor.
[0023] Optionally, the main control board includes: an input control circuit, a filtering circuit, a power supply protection circuit, and a power supply control circuit;
[0024] The first input terminal of the input control circuit serves as the first input terminal of the main control board and is used to connect to the output terminal of the vehicle low-voltage battery. The second output terminal of the input control circuit is connected to the first input of the filtering circuit. The second output terminal of the filtering circuit is connected to the first input terminal of the power supply protection circuit. The second output terminal of the power supply protection circuit is connected to the first input terminal of the power supply control circuit. The second output terminal of the power supply control circuit serves as the second output terminal of the main control board and is connected to the drive board. The power supply control circuit supplies power to the monitoring components.
[0025] Among them, the input control circuit is used to access the vehicle low-voltage battery and is responsible for introducing the electrical energy of the low-voltage battery into the interior of the main control board to provide power for the subsequent circuits. The filtering circuit is used for low-voltage filtering to eliminate noise, harmonics, or other interferences to ensure stable power supply to the main control board. The power supply protection circuit is used to ensure the safety of the main control board in case of abnormal situations. When an abnormal situation occurs, the power supply protection circuit can take corresponding measures to prevent damage to the main control board. The power supply control circuit is used to provide different types of external power supplies.
[0026] Optionally, the main control board further includes a main control circuit. The first output terminal of the main control circuit is used to connect to the vehicle communication system;
[0027] The second input terminal of the main control circuit is connected to the third output terminal of the power supply protection circuit;
[0028] The main control circuit is signal-connected to the monitoring components.
[0029] The first output terminal of the main control circuit is connected to the communication system of the vehicle, which can enable the main control board to communicate with other parts of the vehicle to realize information exchange and sharing. In addition, by being signal-connected to the monitoring components, the main control circuit can monitor the motor controller circuit. When the main control circuit detects an abnormal circuit, the main control circuit can take corresponding measures through the connected power supply protection circuit to prevent damage to the main control board. Thus, ensuring the safety and stability of the oil pump motor controller.
[0030] Optionally, the control board further includes a wake-up circuit. The first input terminal of the wake-up circuit is used to connect to the vehicle controller, and the wake-up circuit is used to receive the start signal sent by the vehicle controller;
[0031] The second input terminal of the wake-up circuit is connected to the third output terminal of the input control circuit.
[0032] The wake-up circuit is used to detect external signals and trigger the system to wake up from the low-power standby mode to the normal operating mode. In this solution, the first input terminal of the wake-up circuit is connected to the vehicle controller to receive the start signal sent by the vehicle controller.
[0033] Compared with the prior art, the beneficial effects achieved by this application are as follows: The integrated oil pump motor controller of this application integrates a pre-charge unit, a power unit, and a main control board. Among them, the pre-charge unit uses components such as a pre-charge contactor and a pre-charge resistor to limit the generation of inrush current. This avoids damage to the power unit and the oil pump motor caused by the inrush current generated when the high-voltage battery is powered on. The power unit receives the current from the pre-charge unit and can adjust the operating state of the oil pump motor according to the instructions of the main control board. The main control board is powered by a low-voltage battery and can send control instructions to the power unit according to the preset program and the information fed back by the sensors, thereby realizing precise control of the operating state of the oil pump motor.
[0034] While meeting the requirements of the hydraulic oil pump control system, this application reduces the number of connection cables and external plugs through an integrated design, eliminates the need for additional PDU configuration, and reduces material and assembly costs. At the same time, the integrated design also reduces the number of independent components and saves installation space. In addition, the integrated design helps to reduce electromagnetic interference, improves electromagnetic compatibility, and ensures the stable operation of the controller in various electromagnetic environments. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0036] Figure 1 It is a schematic diagram of the connection between the pre-charge unit and the power unit in some embodiments provided by this application;
[0037] Figure 2 It is a schematic diagram of the connection of the main control board in some embodiments provided by this application;
[0038] Figure 3It is the circuit diagram of the pre-charge unit of some embodiments provided by this application;
[0039] Figure 4 It is the overall connection schematic diagram of some embodiments provided by this application;
[0040] Figure 5 It is the schematic diagram of the main control board structure of some embodiments provided by this application.
[0041] Explanation of reference numerals: 100 - pre-charge unit; 200 - power unit; 300 - main control board; 400 - monitoring element; 110 - pre-charge contactor; 120 - pre-charge resistor; 130 - main contactor; 210 - DC bus capacitor; 220 - drive board; 230 - power module; 310 - control circuit; 320 - filter circuit; 330 - power supply protection circuit; 340 - power supply control circuit; 350 - main control circuit; 360 - wake-up circuit; 410 - first voltage sensor; 420 - first current sensor; 430 - second voltage sensor; 440 - second current sensor; 450 - temperature sensor; 460 - resolver. Detailed implementation manners
[0042] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this disclosure / this application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation on this application and its application or use.
[0043] Embodiment 1
[0044] This embodiment introduces an integrated oil pump motor controller device. Refer to Figure 1 and Figure 2 , the integrated oil pump motor controller in this embodiment includes a pre-charge unit 100, a power unit 200, and a main control board 300. Among them, the first input end of the pre-charge unit 100 is used to connect to the output end of the high-voltage battery, the second output end of the pre-charge unit 100 is connected to the first input end of the power unit 200, and the pre-charge unit 100 is used to limit the inrush current generated when the high-voltage battery is powered on and transmit the limited current to the power unit 200. Specifically, refer to Figure 3, the pre-charge unit 100 includes: a pre-charge contactor 110, a pre-charge resistor 120, and a main contactor 130. Among them, the pre-charge contactor 110 is connected in series with the pre-charge resistor 120, and the main contactor 130 is connected in parallel with the pre-charge resistor 120. Further, the second output terminal of the power unit 200 is used to connect to the input terminal of the oil pump motor, and the power unit 200 is used to control the output power of the oil pump motor. Specifically, the power unit 200 includes a DC bus capacitor 210, and the DC bus capacitor 210 is connected to the second output terminal of the pre-charge unit 100 as the first input terminal of the power unit 200.
[0045] Reference Figure 3 , when the high-voltage battery is powered on, the pre-charge contactor 110 closes, enabling the pre-charge resistor 120 to be connected to the circuit, and pre-charging the DC bus capacitor 210 through the current-limiting resistor. When the voltage of the DC bus capacitor 210 reaches the target value, the pre-charge contactor 110 disconnects, and the main contactor 130 closes to complete the normal circuit connection. Further, the pre-charge contactor 110 and the main contactor 130 are respectively signal-connected to the main control board 300, and the main control board 300 controls the opening and closing states of the pre-charge contactor 110 and the main contactor 130.
[0046] Further, the first input terminal of the main control board 300 is used to connect to the output terminal of the low-voltage battery, the second output terminal of the main control board 300 is connected to the third input terminal of the power unit 200, and the third output terminal of the main control board 300 is connected to the third input terminal of the pre-charge unit 100.
[0047] The integrated oil pump motor controller in this embodiment integrates the pre-charge unit 100, the power unit 200, and the main control board 300. Among them, the pre-charge unit 100 restricts the generation of inrush current through the pre-charge contactor 110, the main contactor 130, and the pre-charge resistor 120, avoiding damage to the power unit 200 and the oil pump motor caused by the inrush current generated when the high-voltage battery is powered on. The power unit 200 receives the current from the pre-charge unit 100 and can adjust the operating state of the oil pump motor according to the instructions of the main control board 300. The main control board 300 is powered by the low-voltage battery and can send control instructions to the power unit 200 according to the preset program and the information fed back by the sensors, thereby achieving precise control of the operating state of the oil pump motor.
[0048] Through the integrated design in this embodiment, the number of connecting cables and external plugs used is reduced, there is no need to configure an additional PDU (Power Distribution Unit), reducing the material and assembly costs. At the same time, the integrated design helps to reduce electromagnetic interference, improves electromagnetic compatibility, and ensures the stable operation of the controller in various electromagnetic environments. In addition, the integrated design also reduces the number of independent components and saves installation space.
[0049] Further, the power unit 200 further includes a drive board 220 and a power module 230. The first input terminal of the drive board 220 serves as the third input terminal of the power unit 200 and is connected to the second output terminal of the main control board 300. The power module 230 serves as the second output terminal of the power unit 200 and is used to connect to the input terminal of the oil pump motor.
[0050] The drive board 220 receives instruction signals from the main control board 300. These instruction signals include pulse width modulation signals for adjusting the motor speed, direction signals for controlling the motor rotation direction, and torque setting signals, etc. The drive board 220 can adjust and drive the power module 230 according to these signals. In addition, the drive board 220 can also transmit the power module fault signals detected by itself to the main control board. In this embodiment, the power module 230 is an IGBT module, and the power module 230 can convert the input high-voltage direct current into three-phase alternating current to drive the oil pump motor.
[0051] The main control board 300 controls the drive board 220, and then controls the power module 230 to output three-phase current to control the oil pump motor, so as to realize the adjustment of the operating state of the oil pump motor (such as: speed, rotation direction, and torque, etc.). In this embodiment, the drive board 220 is powered by the main control board 300.
[0052] Embodiment 2:
[0053] Based on the same inventive concept as Embodiment 1, referring to Figure 4 This integrated oil pump motor controller in this embodiment further includes a monitoring element 400. The monitoring element 400 is powered by the main control board 300 and is signal-connected to the main control board 300. The monitoring element 400 is powered by the main control board 300 and establishes a signal connection with the main control board 300 to realize data transmission and receipt of control instructions.
[0054] Specifically, the monitoring component 400 includes a first voltage sensor 410 for sampling the voltage of the first input terminal of the pre-charging unit 100, a first current sensor 420 for sampling the current of the first input terminal of the pre-charging unit 100, a second voltage sensor 430 for sampling the voltage of the second output terminal of the pre-charging unit 100, and a second current sensor 440 for sampling the current of the second output terminal of the power unit 200. Among them, the main control board 300 samples the voltages of the first input terminal and the second output terminal of the pre-charging unit 100 through the first voltage sensor 410 and the second voltage sensor 430. The current input to the first input terminal of the pre-charging unit 100, that is, the bus input current, is detected by the first current sensor. The output current of the power unit 200 is detected by the second current sensor 440, so as to realize the real-time monitoring of the working state of the motor. Among them, as an optional implementation manner, the first voltage sensor 410 and the second voltage sensor 430 are integrated in the main control board 300.
[0055] Furthermore, the monitoring component 400 further includes a temperature sensor 450 for detecting the temperature of the power unit 200. The drive board 220 may generate heat during operation. If the temperature is too high, it will not only affect its performance, but may also damage the surrounding electronic components. By continuously monitoring the temperature of the power unit 200 through the temperature sensor 450, the main control board 300 can timely discover potential overheating problems and take corresponding heat dissipation measures or shut down the motor to protect the system.
[0056] Furthermore, the monitoring component 400 further includes a resolver 460, and the resolver 460 is used to detect the operating state of the oil pump motor. The resolver 460 can accurately measure the absolute position of the rotor of the oil pump motor. By continuously monitoring the position change of the rotor, the resolver 460 can calculate the rotational speed of the motor. According to the change trend of the rotor position, the resolver 460 can judge the rotation direction of the motor. In this embodiment, the main control board 300 can obtain data such as the rotational speed and direction of the oil pump motor in real time through the resolver 460. When it is found that the data is abnormal, the main control board 300 can take corresponding actions according to the preset fault handling strategy, such as stopping the motor operation, switching to the standby circuit, etc., to avoid damage to the motor.
[0057] In some embodiments, the resolver 460 can also be replaced by a Hall effect sensor, and Hall sensors are widely used to identify the relative position between the stator and rotor of the motor. When the motor rotates, the Hall effect sensor detects the magnetic field change of the rotor and outputs a corresponding electrical signal to the main control board 300, thereby controlling the operation of the motor. Compared with the resolver 460, the Hall effect sensor has higher accuracy.
[0058] Embodiment 3:
[0059] Based on the same inventive concept as in the first and second embodiments, with reference to Figure 5 In this embodiment, the main control board 300 includes: an input control circuit 310, a filtering circuit 320, a power supply protection circuit 330, a power control circuit 340, and a wake-up circuit 360. Among them, the first input terminal of the input control circuit 310 serves as the first input terminal of the main control board 300 and is used to connect to the output terminal of the vehicle low-voltage battery. The second output terminal of the input control circuit 310 is connected to the first input terminal of the filtering circuit 320. The second output terminal of the filtering circuit 320 is connected to the first input terminal of the power supply protection circuit 330. The second output terminal of the power supply protection circuit 330 is connected to the first input terminal of the power control circuit 340. The second output terminal of the power control circuit 340 serves as the second output terminal of the main control board 300 and is connected to the drive board 220. The power control circuit 340 supplies power to the monitoring component 400. The first input terminal of the wake-up circuit 360 is used to connect to the vehicle controller. The wake-up circuit 360 is used to receive the start signal sent by the vehicle controller. The second input terminal of the wake-up circuit 360 is connected to the third output terminal of the input control circuit 310.
[0060] Among them, the input control circuit 310 is used to connect to the vehicle low-voltage battery and is responsible for introducing the electrical energy of the low-voltage battery into the interior of the main control board 300 to provide power for subsequent circuits. The filtering circuit 320 is used for low-voltage filtering to eliminate noise, harmonics or other interferences to ensure stable power supply of the main control board 300. The power supply protection circuit 330 is used to ensure the safety of the main control board 300 under abnormal conditions (such as overvoltage, undervoltage, overcurrent, reverse connection, etc.). When an abnormal situation occurs, the power supply protection circuit 330 can take corresponding measures (such as cutting off the power supply) to prevent the main control board 300 from being damaged. The power control circuit 340 is used to provide different types of external power supply. The wake-up circuit 360 is used to detect external signals and trigger the system to wake up from the low-power standby mode to the normal working mode. In this embodiment, the first input terminal of the wake-up circuit 360 is connected to the vehicle controller to receive the start signal sent by the vehicle controller.
[0061] In this embodiment, the main control board 300 further includes a main control circuit 350. The first output terminal of the main control circuit 350 is used to connect to the vehicle communication system, which can realize communication between the main control board 300 and other parts of the vehicle to achieve information exchange and sharing. The second input terminal of the main control circuit 350 is connected to the third output terminal of the power supply protection circuit 330. The main control circuit 350 is signal-connected to the monitoring component 400. Thus, the monitoring and protection of the motor controller circuit are realized. When the main control circuit 350 detects an abnormal circuit, the main control circuit 350 can take corresponding measures through the power supply protection circuit 330 connected thereto to prevent the main control board 300 from being damaged. Thus, the safety and stability of the oil pump motor controller are ensured.
[0062] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the technical principles of the present disclosure / the present application, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present disclosure / the present application.
Claims
1. An integrated oil pump motor controller, characterized in that, Comprising: A pre-charge unit (100), a power unit (200), and a main control board (300); The first input end of the pre-charge unit (100) is used to connect to the output end of a high-voltage battery. The second output end of the pre-charge unit (100) is connected to the first input end of the power unit (200). The pre-charge unit (100) is used to limit the inrush current generated when the high-voltage battery is powered on and transfer the limited current to the power unit (200); The second output end of the power unit (200) is used to connect to the input end of an oil pump motor; The first input end of the main control board (300) is used to connect to the output end of a low-voltage battery. The second output end of the main control board (300) is connected to the third input end of the power unit (200). The third output end of the main control board (300) is connected to the third input end of the pre-charge unit (100).
2. The integrated oil pump motor controller according to claim 1, wherein The pre-charge unit (100) includes a pre-charge contactor (110), a pre-charge resistor (120), and a main contactor (130); The pre-charge contactor (110) is in series with the pre-charge resistor (120). The main contactor (130) is in parallel with the pre-charge resistor (120). The pre-charge contactor (110) and the main contactor (130) are respectively signal-connected to the main control board (300).
3. The integrated oil pump motor controller according to claim 2, wherein, The power unit (200) includes a DC bus capacitor (210), a drive board (220), and a power module (230). The DC bus capacitor (210) serves as the first input end of the power unit (200) and is connected to the second output end of the pre-charge unit (100). The first input end of the drive board (220) serves as the third input end of the power unit (200) and is connected to the second output end of the main control board (300). The power module (230) serves as the second output end of the power unit (200) and is used to connect to the input end of the oil pump motor.
4. The integrated oil pump motor controller according to claim 3, characterized in that, It further includes a monitoring element (400). The monitoring element (400) is powered by the main control board (300) and is signal-connected to the main control board (300).
5. The integrated oil pump motor controller according to claim 4, wherein The monitoring element (400) includes: a first voltage sensor (410) for sampling the voltage at the first input end of the pre-charge unit (100), a first current sensor (420) for sampling the current at the first input end of the pre-charge unit (100), a second voltage sensor (430) for sampling the voltage at the second output end of the pre-charge unit (100), and a second current sensor (440) for sampling the current at the second output end of the power unit (200).
6. The integrated oil pump motor controller according to claim 4, wherein The monitoring element (400) includes a temperature sensor (450) for detecting the temperature of the power unit (200).
7. The integrated oil pump motor controller according to claim 4, wherein, The monitoring element (400) includes a resolver (460). The resolver (460) is used to detect the operating state of the oil pump motor.
8. The integrated oil pump motor controller according to claim 4, wherein The main control board (300) includes: an input control circuit (310), a filtering circuit (320), a power supply protection circuit (330), and a power control circuit (340); The first input end of the input control circuit (310) serves as the first input end of the main control board (300) and is used to be connected to the output end of the low-voltage battery of the whole vehicle. The second output end of the input control circuit (310) is connected to the first input end of the filtering circuit (320). The second output end of the filtering circuit (320) is connected to the first input end of the power supply protection circuit (330). The second output end of the power supply protection circuit (330) is connected to the first input end of the power control circuit (340). The second output end of the power control circuit (340) serves as the second output end of the main control board (300) and is connected to the drive board (220). The power control circuit (340) supplies power to the monitoring component (400).
9. The integrated oil pump motor controller according to claim 8, wherein, The main control board (300) further includes a main control circuit (350). The first output end of the main control circuit (350) is used to be connected to the vehicle communication system; The second input end of the main control circuit (350) is connected to the third output end of the power supply protection circuit (330); The main control circuit (350) is signal-connected to the monitoring component (400).
10. The integrated oil pump motor controller according to claim 9, characterized in that, The control board further includes a wake-up circuit (360). The first input end of the wake-up circuit (360) is used to be connected to the vehicle controller. The wake-up circuit (360) is used to receive the start signal sent by the vehicle controller; The second input end of the wake-up circuit (360) is connected to the third output end of the input control circuit (310).