Low-pressure control system, control method of low-pressure control system, and vehicle

Abstract

The embodiment of the application provides a low-voltage control system, a control method of the low-voltage control system and a vehicle, and the low-voltage control system comprises: a low-voltage power supply module; a controller module comprising a control board and a low-voltage connection board, the low-voltage connection board is electrically connected with the low-voltage power supply module, and the low-voltage power supply module is used for providing a first voltage for the low-voltage connection board; the low-voltage connection board is electrically connected with the control board, and the low-voltage connection board is used for providing the first voltage for the control board; a sensor module, the sensor module is electrically connected with the control board, and the control board is used for providing a second voltage for the sensor module; a load module, the load module is electrically connected with the low-voltage connection board, the low-voltage connection board is used for providing the first voltage for the load module and sending a load control signal to the load module; and a solenoid valve module, the solenoid valve module is electrically connected with the low-voltage connection board, and the low-voltage connection board is used for selectively providing the second voltage for the solenoid valve module, thereby controlling conduction or disconnection of the solenoid valve module.

Description

Technical Field

[0001] This application relates to the field of autonomous driving technology, specifically to a low-voltage control system, a control method for the low-voltage control system, and a vehicle. Background Technology

[0002] The vehicle's low-voltage system is powered by a low-voltage battery, and the low-voltage components are controlled separately by the motor controller and the transmission controller. See also Figure 1 This is a schematic diagram of a low-voltage control architecture in related technologies. For example... Figure 1 As shown, the system includes a 12V low-voltage power supply, a motor controller, a gearbox controller, a lubrication electronic oil pump, a pressure electronic oil pump, a parking motor, a shift motor, a first eddy current sensor, a second eddy current sensor, a pressure sensor, a first solenoid valve, and a second solenoid valve.

[0003] The 12V low-voltage power supply is electrically connected to the motor controller, transmission controller, lubrication electronic oil pump, pressure electronic oil pump, parking motor, and shift motor, and provides 12V power to these components. The motor controller is electrically connected to the lubrication electronic oil pump, the first eddy current sensor, and the second eddy current sensor, and controls the lubrication electronic oil pump via signals to provide 5V power to the first and second eddy current sensors and receive analog signals from them. The transmission controller is electrically connected to the pressure electronic oil pump, parking motor, shift motor, pressure sensor, first solenoid valve, and second solenoid valve, and controls these components via signals to provide 5V power to the pressure sensor and receive analog signals from it. It selectively provides 5V power to the first and second solenoid valves to control their opening and closing.

[0004] However, the aforementioned low-voltage control system has at least the following problems:

[0005] 1) The motor controller and the gearbox controller are separate, which is not conducive to the overall vehicle layout and space utilization, and the wiring harness is complicated;

[0006] 2) The control and power supply of the lubrication electronic oil pump, pressure electronic oil pump, parking motor and shift motor are separated, resulting in complex wiring harnesses;

[0007] 3) The first and second eddy current sensors are controlled and powered by the motor controller, while the pressure sensor is controlled and powered by the gearbox controller, which is not conducive to cost control;

[0008] 4) The analog signal sent by the pressure sensor may be interfered with by the solenoid valve control circuit.

[0009] It should be noted that the information disclosed in the background section of this application is intended only to enhance the understanding of the general background of this application, and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0010] In view of this, this application provides a low-pressure control system, method, and vehicle to address the problems of the prior art where the motor controller and transmission controller are separate, which is not conducive to the overall vehicle layout and space utilization, and the wiring harness is complex; the control and power supply of the lubrication electronic oil pump, pressure electronic oil pump, parking motor, and shift motor are separated, resulting in complex wiring harnesses; the first eddy current sensor and the second eddy current sensor are powered and controlled by the motor controller, while the pressure sensor is powered and controlled by the transmission controller, which is not conducive to cost control; and the analog signal sent by the pressure sensor may be interfered with by the solenoid valve control circuit.

[0011] In a first aspect, embodiments of this application provide a low-voltage control system, including:

[0012] Low-voltage power supply module;

[0013] The controller module includes a control board and a low-voltage connection board. The low-voltage connection board is electrically connected to the low-voltage power supply module, which provides a first voltage to the low-voltage connection board. The low-voltage connection board is also electrically connected to the control board, providing the first voltage to the control board.

[0014] A sensor module, which is electrically connected to the control board, wherein the control board is used to provide a second voltage to the sensor module;

[0015] A load module is electrically connected to the low-voltage connection board, which provides a first voltage to the load module and sends a load control signal to the load module.

[0016] The solenoid valve module is electrically connected to the low-voltage connection plate, which is used to selectively provide the second voltage to the solenoid valve module, thereby controlling the solenoid valve module to be turned on or off.

[0017] In one possible implementation, the sensor module includes:

[0018] An eddy current sensor is electrically connected to the control board, which provides a second voltage to the eddy current sensor. The eddy current sensor is used to detect the speed and angle of the motor.

[0019] A pressure sensor is electrically connected to the control board, which provides a second voltage to the pressure sensor and is used to detect the oil pressure in the DHT system.

[0020] In one possible implementation, the eddy current sensor includes:

[0021] A first eddy current sensor is electrically connected to the control board, which provides a second voltage to the first eddy current sensor. The first eddy current sensor is used to detect the speed and angle of the parking motor.

[0022] The second eddy current sensor is electrically connected to the control board, which provides a second voltage to the second eddy current sensor. The second eddy current sensor is used to detect the speed and angle of the shift motor.

[0023] In one possible implementation, the load module includes:

[0024] The motor is electrically connected to the low-voltage connection plate, which provides a first voltage to the motor and sends a motor control signal to the motor.

[0025] A pressure electronic oil pump is electrically connected to the low-voltage connection plate, which provides a first voltage to the pressure electronic oil pump and sends a pressure electronic oil pump control signal to the pressure electronic oil pump.

[0026] A lubricating electronic oil pump is electrically connected to the low-voltage connecting plate, which provides a first voltage to the lubricating electronic oil pump and sends a lubricating electronic oil pump control signal to the lubricating electronic oil pump.

[0027] In one possible implementation, the motor includes:

[0028] A parking motor is electrically connected to the low-voltage connection plate, which provides a first voltage to the parking motor and sends a parking motor control signal to the parking motor.

[0029] A shift motor is electrically connected to the low-voltage connecting plate, which provides a first voltage to the shift motor and sends a shift motor control signal to the shift motor.

[0030] In one possible implementation, the solenoid valve module includes:

[0031] A first solenoid valve is electrically connected to the low-pressure connecting plate, and the low-pressure connecting plate is used to selectively supply the second voltage to the first solenoid valve, thereby controlling the opening or closing of the first solenoid valve.

[0032] The second solenoid valve is electrically connected to the low-voltage connecting plate, which is used to selectively supply the second voltage to the second solenoid valve, thereby controlling the opening or closing of the second solenoid valve.

[0033] Secondly, embodiments of this application provide a control method for a low-voltage control system, applied to the system described in the first aspect, the method comprising:

[0034] The control board receives the detection signal sent by the sensor module and generates a load control signal based on the detection signal;

[0035] The control board sends the load control signal to the low-voltage connection board;

[0036] The low-voltage connection board sends the load control signal to the load module;

[0037] The load module performs corresponding operations based on the load control signal.

[0038] In one possible implementation, the method further includes:

[0039] The control board sends a solenoid valve control signal to the low-voltage connection board;

[0040] The low-voltage connection plate selectively provides a second voltage to the solenoid valve module according to the solenoid valve control signal, thereby controlling the solenoid valve module to be turned on or off.

[0041] In one possible implementation, when the sensor module includes an eddy current sensor and the load module includes a motor,

[0042] The control board receives detection signals sent by the sensor module and generates load control signals based on the detection signals, including: the control board receives eddy current detection signals sent by the eddy current sensor and generates motor control signals based on the eddy current detection signals;

[0043] The control board sends the load control signal to the low-voltage connection board, including: the control board sends the motor control signal to the low-voltage connection board;

[0044] The low-voltage connection board sends the load control signal to the load module, including: the low-voltage connection board sends the motor control signal to the motor;

[0045] The load module performs corresponding operations according to the load control signal, including: the motor performs corresponding operations according to the motor control signal.

[0046] In one possible implementation, when the eddy current sensor includes a first eddy current sensor and a second eddy current sensor, and when the motor includes a parking motor and a shift motor...

[0047] The control board receives eddy current detection signals from the eddy current sensor and generates motor control signals based on the eddy current detection signals, including:

[0048] The control board receives a first eddy current detection signal sent by the first eddy current sensor and generates a parking motor control signal based on the first eddy current detection signal.

[0049] The control board receives the second eddy current detection signal sent by the second eddy current sensor, and generates a shift motor control signal based on the second eddy current detection signal.

[0050] The control board sends the motor control signal to the low-voltage connection board, including:

[0051] The control board sends the parking motor control signal to the low-voltage connection board;

[0052] The control board sends the shift motor control signal to the low-voltage connection board;

[0053] The low-voltage connection board sends the motor control signal to the motor, including:

[0054] The low-voltage connecting plate sends the motor control signal to the parking motor;

[0055] The low-voltage connecting plate sends the motor control signal to the shift motor;

[0056] The motor performs corresponding operations according to the motor control signal, including:

[0057] The parking motor performs corresponding operations according to the parking motor control signal;

[0058] The shift motor performs corresponding operations according to the shift motor control signal.

[0059] In one possible implementation, when the sensor module includes a pressure sensor and the load module includes a pressure electronic oil pump,

[0060] The control board receives detection signals sent by the sensor module and generates load control signals based on the detection signals, including: the control board receives pressure detection signals sent by the pressure sensor and generates pressure electronic oil pump control signals based on the pressure detection signals;

[0061] The control board sends the load control signal to the low-voltage connection board, including: the control board sends the pressure electronic oil pump control signal to the low-voltage connection board;

[0062] The low-voltage connection board sends the load control signal to the load module, including: the low-voltage connection board sends the pressure electronic oil pump control signal to the pressure electronic oil pump;

[0063] The load module performs corresponding operations according to the load control signal, including: the pressure electronic oil pump performs corresponding operations according to the pressure electronic oil pump control signal.

[0064] In one possible implementation, when the load module includes a lubricating electronic oil pump,

[0065] The control board sends the load control signal to the low-voltage connection board, including: the control board sends a lubrication electronic oil pump control signal to the low-voltage connection board;

[0066] The low-voltage connection board sends the load control signal to the load module, including: the low-voltage connection board sends the low-voltage electronic oil pump control signal to the lubrication electronic oil pump;

[0067] The load module performs corresponding operations according to the load control signal, including: the lubrication electronic oil pump performs corresponding operations according to the lubrication electronic oil pump control signal.

[0068] Thirdly, embodiments of this application provide a vehicle including the low-pressure control system described in the first aspect.

[0069] The technical solutions provided in the embodiments of this application have at least the following technical effects:

[0070] 1) The combination of the motor controller and the gearbox controller is beneficial to the overall vehicle layout and space utilization, and the wiring harness is simple;

[0071] 2) The lubrication electronic oil pump, pressure electronic oil pump, parking motor, and shift motor are all controlled and powered by the low-voltage connection board in the controller, and the wiring harness is simple;

[0072] 3) The first eddy current sensor, the second eddy current sensor, and the pressure sensor are all controlled and powered by the control board in the controller, which helps to control costs;

[0073] 4) The sensor is controlled by the control board in the controller, and the solenoid valve is controlled by the low-pressure connection board in the controller. That is, the sensor and the solenoid valve control circuit are separated, and the analog signal sent by the sensor is not easily interfered with by the solenoid valve control circuit. Attached Figure Description

[0074] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0075] Figure 1 This is a schematic diagram of a low-voltage control architecture in related technologies;

[0076] Figure 2 A schematic diagram of a low-voltage control system provided in an embodiment of this application;

[0077] Figure 3 This is a schematic diagram of another low-voltage control system provided in an embodiment of this application;

[0078] Figure 4 This is a schematic diagram of a control method for a low-voltage control system provided in an embodiment of this application;

[0079] Figure 5 This is a schematic diagram of a vehicle provided in an embodiment of this application. Detailed Implementation

[0080] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0081] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0082] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0083] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0084] In existing low-voltage control systems, the motor controller and transmission controller are separate, which is detrimental to the overall vehicle layout and space utilization, and results in complex wiring harnesses. Furthermore, the control and power supply of the lubrication electronic oil pump, pressure electronic oil pump, parking motor, and shift motor are separated, leading to complex wiring harnesses. Additionally, the first and second eddy current sensors are powered and controlled by the motor controller, while the pressure sensor is powered and controlled by the transmission controller, which is detrimental to cost control. Moreover, the analog signals transmitted by the pressure sensor are susceptible to interference from the solenoid valve control circuit. This application provides a low-voltage control system, method, and vehicle. The technical solution provided by this application has at least the following technical advantages:

[0085] 1) The combination of the motor controller and the gearbox controller is beneficial to the overall vehicle layout and space utilization, and the wiring harness is simple;

[0086] 2) The lubrication electronic oil pump, pressure electronic oil pump, parking motor, and shift motor are all controlled and powered by the low-voltage connection board in the controller, and the wiring harness is simple;

[0087] 3) The first eddy current sensor, the second eddy current sensor, and the pressure sensor are all controlled and powered by the control board in the controller, which helps to control costs;

[0088] 4) The sensor is controlled by the control board in the controller, and the solenoid valve is controlled by the low-pressure connection board in the controller. That is, the sensor and the solenoid valve control circuit are separated, and the analog signal sent by the sensor is not easily interfered with by the solenoid valve control circuit.

[0089] The following is a detailed explanation.

[0090] See Figure 2 This is a schematic diagram of a low-voltage control system provided in an embodiment of this application. Figure 2 As shown, the low-voltage control system includes a low-voltage power supply module 201, a controller module 202, a sensor module 203, a load module 204, and a solenoid valve module 205.

[0091] The low-voltage power supply module 201 is electrically connected to the low-voltage connection board of the controller module 202. The low-voltage power supply module 201 provides a first voltage to the low-voltage connection board, which is typically 12V. In some possible implementations, the low-voltage power supply module can be KL30 in the vehicle's DC / DC converter, where KL30 represents the positive terminal of the battery, used to provide low-voltage power to the automotive electronic control unit (ECU). Of course, the specific voltage value of this first voltage may differ in different application scenarios, and this application embodiment does not impose specific limitations on it.

[0092] The controller module 202 includes a control board 2021 and a low-voltage connection board 2022. The low-voltage connection board 2022 is electrically connected to a low-voltage power supply module 201, which provides a first voltage to the low-voltage connection board 2022. The low-voltage connection board 2022 is also electrically connected to the control board 2021, providing the first voltage to the control board 2021. The control board 2021 converts the first voltage provided by the low-voltage connection board 2022 into a second voltage and provides the second voltage to the sensor module 203. It is understood that the magnitude of the second voltage depends on the operating voltage of the sensor module 203, and is typically lower than the first voltage. For example, the second voltage is 5V. Of course, the specific value of the second voltage may differ in different application scenarios, and this embodiment does not impose specific limitations on this. Additionally, the control board 2021 also receives detection signals sent by the sensor module 203, generates load control signals based on the detection signals, and sends the load control signals to the low-voltage connection board 2022. The specific details regarding the detection signals and load control signals are described in detail below.

[0093] In one possible implementation, the control board 2021 is also used to generate a valve control signal and send the valve control signal to the low-pressure connection board 2022. The valve control signal is used to control the solenoid valve to open or close.

[0094] Since the controller needs to use a chip to convert the first voltage to the second voltage, if the sensors in the sensor module 203 are controlled by different controllers, the number of chips used will increase. In this embodiment, the second voltage is provided by the control board 2021 for all sensors, which can reduce the number of chips used and help control costs.

[0095] Sensor module 203 is electrically connected to control board 2021, which provides a second voltage to sensor module 203. Additionally, sensor module 203 generates a detection signal and sends it to control board 2021. Specifically, sensor module 203 detects the measured information, converts the detected information into an electrical signal, generates a detection signal, and sends the detection signal to control board 2021.

[0096] See Figure 3 This is a schematic diagram of another low-voltage control system provided in an embodiment of this application. Figure 3As shown in this embodiment, the sensor module 203 includes an eddy current sensor and a pressure sensor. The eddy current sensor is electrically connected to the control board 2021, which provides a second voltage to the eddy current sensor. The eddy current sensor detects the motor's speed and angle. The pressure sensor is also electrically connected to the control board 2021, which provides a second voltage to the pressure sensor. The pressure sensor detects the oil pressure in the dedicated hybrid transmission (DHT) system. Specifically, the eddy current sensor determines the motor's speed and angle by measuring the intensity of the eddy currents around the motor. When the motor rotates, the eddy current sensor detects an electromagnetic signal and generates a corresponding current signal. The motor's speed and angle are determined based on the intensity and changes of the current signal. The pressure sensor detects the oil pressure in the DHT, converts the oil pressure into a voltage value, and obtains the corresponding pressure value by looking up a table. Of course, the sensor module 203 may also include other sensors, such as an accelerator pedal position sensor; this embodiment does not limit this.

[0097] In one possible implementation, the eddy current sensor includes a first eddy current sensor and a second eddy current sensor. The first eddy current sensor is electrically connected to a control board 2021, which provides a second voltage to the first eddy current sensor. The first eddy current sensor is used to detect the speed and angle of the parking motor. The second eddy current sensor is also electrically connected to the control board 2021, which provides a second voltage to the second eddy current sensor. The second eddy current sensor is used to detect the speed and angle of the shift motor. Specifically, when the parking motor rotates, the first eddy current sensor detects a first electromagnetic signal and generates a corresponding first current signal. The speed and angle of the parking motor are determined based on the intensity and changes of the first current signal. When the shift motor rotates, the second eddy current sensor detects a second electromagnetic signal and generates a corresponding second current signal. The speed and angle of the parking motor are determined based on the intensity and changes of the second current signal.

[0098] Since the detection signal generated by the sensor module is an analog signal, there is an electromagnetic compatibility (EMC) risk. If the control board 2021 corresponding to the sensor module has high-current circuits, the detection signal sent by the sensor module may be subject to electromagnetic interference. Therefore, only the sensor module is arranged on the control board 2021, and the high-current circuits are all connected to the low-voltage control board 2021 to ensure that the detection signal sent by the sensor module is not easily subject to electromagnetic interference.

[0099] Please continue reading. Figure 2 The load module 204 is electrically connected to the low-voltage connection board 2022, which provides a first voltage to the load module and sends a load control signal to it. Specifically, the low-voltage connection board 2022 receives the load control signal sent by the control board 2021 and sends the load control signal to the load module while providing the first voltage. The load control signal is an electrical signal generated by the control board 2021 based on the detection signal sent by the sensor module, used to control the load module. In one possible implementation, the load control signal includes a lubrication electronic oil pump control signal, a pressure electronic oil pump control signal, and a motor control signal. After receiving the load control signal, the load module performs corresponding operations according to the load control signal. Of course, the load module may also include other loads, such as lighting loads; this embodiment does not limit this.

[0100] Since the load control signal is not easily affected by electromagnetic interference, it can be transmitted along the same line as the first voltage, thereby simplifying the circuit and reducing costs.

[0101] Please continue reading. Figure 3 In this embodiment, the load module includes a lubrication electronic oil pump, a pressure electronic oil pump, and a motor. The lubrication electronic oil pump is electrically connected to a low-voltage connection board 2022, which provides a first voltage to the lubrication electronic oil pump and sends a lubrication electronic oil pump control signal to it. The pressure electronic oil pump is also electrically connected to the low-voltage connection board 2022, which provides a first voltage to the pressure electronic oil pump and sends a pressure electronic oil pump control signal to it. The motor is also electrically connected to the low-voltage connection board 2022, which provides a first voltage to the motor and sends a motor control signal to it.

[0102] Specifically, the lubrication electronic oil pump is used to provide lubrication for the entire DHT system. After receiving the lubrication electronic oil pump control signal, the lubrication electronic oil pump delivers lubricating oil to various friction parts in the DHT system according to the control signal. The pressure electronic oil pump is used to provide pressure for the DHT hydraulic system. After receiving the pressure electronic oil pump control signal, the pressure electronic oil pump performs corresponding pressurization or depressurization operations according to the control signal. After receiving the motor control signal, the motor performs corresponding operations according to the control signal.

[0103] In one possible implementation, the motor includes a parking motor and a shift motor. The parking motor is electrically connected to a low-voltage connection board 2022, which provides a first voltage to the parking motor and sends a parking motor control signal to it. Upon receiving the parking motor control signal, the parking motor performs a parking or de-parking operation according to the signal. The shift motor is also electrically connected to the low-voltage connection board 2022, which provides a first voltage to the shift motor and sends a shift motor control signal to it. Upon receiving the shift motor control signal, the shift motor performs a shifting operation according to the signal.

[0104] Please continue reading. Figure 2 The solenoid valve module 205 is electrically connected to the low-voltage connection board 2022. The low-voltage connection board 2022 is used to selectively provide a second voltage to the solenoid valve module, thereby controlling the solenoid valve module to turn on or off. Specifically, the low-voltage connection board 2022 receives the valve control signal sent by the control board 2021, and selectively provides the second voltage to the solenoid valve module according to the valve control signal, thereby controlling the solenoid valve module to turn on or off.

[0105] The on / off state of the solenoid valve is determined by the on / off state of the voltage. In one possible implementation, when the valve control signal received by the low-voltage connection board 2022 is on, the low-voltage connection board 2022 provides a second voltage to the solenoid valve module. The solenoid valve module is turned on upon receiving the second voltage, thereby controlling the solenoid valve to be on. When the valve control signal received by the low-voltage connection board 2022 is off, the low-voltage connection board 2022 stops providing the second voltage to the solenoid valve module. The solenoid valve module is de-energized and thus disconnected, thereby controlling the solenoid valve to be off.

[0106] Please continue reading. Figure 3 In one possible implementation, the solenoid valve module includes a first solenoid valve and a second solenoid valve. The first solenoid valve is used to switch gears by controlling the opening or closing of the oil circuit, and the second solenoid valve is used to control the opening or closing of the clutch by controlling the opening or closing of the oil circuit. Of course, the solenoid valve module may also include other solenoid valves, and this application embodiment does not limit this.

[0107] See Figure 4 This is a schematic diagram of a control method for a low-voltage control system provided in an embodiment of this application. This method can be applied to... Figure 2 The low-voltage control system shown mainly includes the following steps.

[0108] Step S401: The control board receives the detection signal sent by the sensor module and generates a load control signal based on the detection signal.

[0109] Specifically, the sensor module generates a detection signal based on the detected content and sends the detection signal to the control board. The control board receives the detection signal sent by the sensor module and generates a load control signal based on the detection signal.

[0110] In one possible implementation, when the sensor module includes an eddy current sensor and the load module includes a motor, the control board receives the eddy current detection signal and generates a motor control signal.

[0111] In one possible implementation, when the eddy current sensor includes a first eddy current sensor and the motor includes a parking motor, the control board receives the first eddy current detection signal and generates a parking motor control signal; when the eddy current sensor includes a second eddy current sensor and the motor includes a shift motor, the control board receives the second eddy current detection signal and generates a shift motor control signal.

[0112] In one possible implementation, when the sensor module includes a pressure sensor and the load module includes a pressure electronic oil pump, the control board receives the pressure detection signal and generates a pressure electronic oil pump control signal.

[0113] In one possible implementation, when the load module includes a lubrication electronic oil pump, the control board generates a lubrication electronic oil pump control signal.

[0114] Since the detection signal generated by the sensor module is an analog signal, there is an EMC risk. If the control board corresponding to the sensor module has a high-current circuit, the detection signal sent by the sensor module may be subject to electromagnetic interference. Therefore, the control board only has the sensor module, so as to ensure that the detection signal sent by the sensor module is not easily affected by electromagnetic interference.

[0115] Step S402: The control board sends a load control signal to the low-voltage connection board.

[0116] Specifically, the control board sends the load control signal generated by the control board to the low-voltage connection board.

[0117] In one possible implementation, when the sensor module includes an eddy current sensor and the load module includes a motor, the control board sends a motor control signal to the low-voltage connection board.

[0118] In one possible implementation, when the eddy current sensor includes a first eddy current sensor and the motor includes a parking motor, the control board sends a parking motor control signal to the low-voltage connection board; when the eddy current sensor includes a second eddy current sensor and the motor includes a shift motor, the control board sends a shift motor control signal to the low-voltage connection board.

[0119] In one possible implementation, when the sensor module includes a pressure sensor and the load module includes a pressure electronic oil pump, the control board sends a pressure electronic oil pump control signal to the low-pressure connection board.

[0120] In one possible implementation, when the load module includes a lubrication electronic oil pump, the control board sends a lubrication electronic oil pump control signal to the low-voltage connection board.

[0121] Step S403: The low-voltage connection board sends a load control signal to the load module.

[0122] In one possible implementation, when the sensor module includes an eddy current sensor and the load module includes a motor, the low-voltage connection board sends a motor control signal to the motor.

[0123] In one possible implementation, when the eddy current sensor includes a first eddy current sensor and the motor includes a parking motor, the low-voltage connection board sends a parking motor control signal to the parking motor; when the eddy current sensor includes a second eddy current sensor and the motor includes a shift motor, the low-voltage connection board sends a shift motor control signal to the shift motor.

[0124] In one possible implementation, when the sensor module includes a pressure sensor and the load module includes a pressure electronic oil pump, the low-pressure connection board sends a pressure electronic oil pump control signal to the pressure electronic oil pump.

[0125] In one possible implementation, when the load module includes a lubrication electronic oil pump, the low-voltage connection board sends a lubrication electronic oil pump control signal to the lubrication electronic oil pump.

[0126] Since the load control signal is not easily affected by electromagnetic interference, it can be transmitted along the same line as the first voltage, thereby simplifying the circuit and reducing costs.

[0127] Step S404: The load module performs the corresponding operation according to the load control signal.

[0128] In one possible implementation, when the load module includes a motor, the motor performs corresponding operations according to the motor control signal.

[0129] In one possible implementation, when the motor includes a parking motor, the parking motor performs parking or stops parking operations according to a parking motor control signal; when the motor includes a shift motor, the shift motor performs shifting operations according to a shift motor control signal.

[0130] In one possible implementation, when the load module includes a pressure electronic oil pump, the pressure electronic oil pump performs corresponding operations according to the pressure electronic oil pump control signal.

[0131] In one possible implementation, when the load module includes a lubrication electronic oil pump, the lubrication electronic oil pump performs corresponding operations according to the lubrication electronic oil pump control signal.

[0132] In one possible implementation, Figure 4 The control method of the low-voltage control system shown also includes:

[0133] The control board sends a solenoid valve control signal to the low-voltage connection board; the low-voltage connection board selectively provides a second voltage to the solenoid valve module according to the solenoid valve control signal, thereby controlling the solenoid valve module to turn on or off.

[0134] For specific details regarding the embodiments of this application, please refer to the above. Figure 2 and Figure 3 The descriptions in the illustrated embodiments are omitted for brevity.

[0135] Corresponding to the above embodiments, this application also provides a vehicle 500.

[0136] See Figure 5 This is a schematic diagram of a vehicle provided in an embodiment of this application. Figure 5 As shown, vehicle 500 includes Figure 2 The low-voltage control system shown is described in detail in the above embodiments, and will not be repeated here for the sake of brevity.

[0137] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent the existence of A alone, the simultaneous existence of A and B, or the existence of B alone. A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0138] Those skilled in the art will recognize that the units and algorithm steps described in the embodiments disclosed herein can be implemented using electronic hardware, computer software, or a combination of electronic hardware and software. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0139] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0140] In the several embodiments provided in this application, any function, if implemented as a software functional unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0141] The same or similar parts between the various embodiments in this specification can be referred to mutually. In particular, the device embodiments and terminal embodiments are basically similar to the method embodiments, so the description is relatively simple, and the relevant parts can be referred to the description in the method embodiments.

Claims

1. A low-voltage control system, characterized in that, include: Low-voltage power supply module; The controller module includes a control board and a low-voltage connection board. The low-voltage connection board is electrically connected to the low-voltage power supply module, which provides a first voltage to the low-voltage connection board. The low-voltage connection board is also electrically connected to the control board, providing the first voltage to the control board. A sensor module, which is electrically connected to the control board, wherein the control board is used to provide a second voltage to the sensor module; A load module is electrically connected to the low-voltage connection board, which provides a first voltage to the load module and sends a load control signal to the load module. The solenoid valve module is electrically connected to the low-voltage connection plate, which is used to selectively provide the second voltage to the solenoid valve module, thereby controlling the solenoid valve module to be turned on or off.

2. The system according to claim 1, characterized in that, The sensor module includes: An eddy current sensor is electrically connected to the control board, which provides a second voltage to the eddy current sensor. The eddy current sensor is used to detect the speed and angle of the motor. A pressure sensor is electrically connected to the control board, which provides a second voltage to the pressure sensor and is used to detect the oil pressure in the DHT system.

3. The system according to claim 2, characterized in that, The eddy current sensor includes: A first eddy current sensor is electrically connected to the control board, which provides a second voltage to the first eddy current sensor. The first eddy current sensor is used to detect the speed and angle of the parking motor. The second eddy current sensor is electrically connected to the control board, which provides a second voltage to the second eddy current sensor. The second eddy current sensor is used to detect the speed and angle of the shift motor.

4. The system according to claim 1, characterized in that, The load module includes: The motor is electrically connected to the low-voltage connection plate, which provides a first voltage to the motor and sends a motor control signal to the motor. A pressure electronic oil pump is electrically connected to the low-voltage connection plate, which provides a first voltage to the pressure electronic oil pump and sends a pressure electronic oil pump control signal to the pressure electronic oil pump. A lubricating electronic oil pump is electrically connected to the low-voltage connecting plate, which provides a first voltage to the lubricating electronic oil pump and sends a lubricating electronic oil pump control signal to the lubricating electronic oil pump.

5. The system according to claim 4, characterized in that, The motor includes: A parking motor is electrically connected to the low-voltage connection plate, which provides a first voltage to the parking motor and sends a parking motor control signal to the parking motor. A shift motor is electrically connected to the low-voltage connecting plate, which provides a first voltage to the shift motor and sends a shift motor control signal to the shift motor.

6. The system according to claim 1, characterized in that, The solenoid valve module includes: A first solenoid valve is electrically connected to the low-pressure connecting plate, and the low-pressure connecting plate is used to selectively supply the second voltage to the first solenoid valve, thereby controlling the opening or closing of the first solenoid valve. The second solenoid valve is electrically connected to the low-voltage connecting plate, which is used to selectively supply the second voltage to the second solenoid valve, thereby controlling the opening or closing of the second solenoid valve.

7. A control method for a low-voltage control system, characterized in that, Applied to the system according to any one of claims 1-6, the method comprises: The control board receives the detection signal sent by the sensor module and generates a load control signal based on the detection signal; The control board sends the load control signal to the low-voltage connection board; The low-voltage connection board sends the load control signal to the load module; The load module performs corresponding operations based on the load control signal.

8. The method according to claim 7, characterized in that, Also includes: The control board sends a solenoid valve control signal to the low-voltage connection board; The low-voltage connection plate selectively provides a second voltage to the solenoid valve module according to the solenoid valve control signal, thereby controlling the solenoid valve module to be turned on or off.

9. The method according to claim 7, characterized in that, When the sensor module includes an eddy current sensor and the load module includes a motor. The control board receives detection signals sent by the sensor module and generates load control signals based on the detection signals, including: the control board receives eddy current detection signals sent by the eddy current sensor and generates motor control signals based on the eddy current detection signals; The control board sends the load control signal to the low-voltage connection board, including: the control board sends the motor control signal to the low-voltage connection board; The low-voltage connection board sends the load control signal to the load module, including: the low-voltage connection board sends the motor control signal to the motor; The load module performs corresponding operations according to the load control signal, including: the motor performs corresponding operations according to the motor control signal.

10. The method according to claim 9, characterized in that, When the eddy current sensor includes a first eddy current sensor and a second eddy current sensor, and when the motor includes a parking motor and a shift motor... The control board receives an eddy current detection signal from an eddy current sensor and generates a motor control signal based on the eddy current detection signal, including: the control board receives a first eddy current detection signal from a first eddy current sensor and generates a parking motor control signal based on the first eddy current detection signal; the control board receives a second eddy current detection signal from a second eddy current sensor and generates a shift motor control signal based on the second eddy current detection signal. The control board sends the motor control signal to the low-voltage connection board, including: the control board sending the parking motor control signal to the low-voltage connection board; the control board sending the shift motor control signal to the low-voltage connection board; The low-voltage connecting plate sends the motor control signal to the motor, including: the low-voltage connecting plate sending the motor control signal to the parking motor; the low-voltage connecting plate sending the motor control signal to the shift motor; The motor performs corresponding operations according to the motor control signal, including: the parking motor performing corresponding operations according to the parking motor control signal; and the shift motor performing corresponding operations according to the shift motor control signal.

11. The method according to claim 7, characterized in that, When the sensor module includes a pressure sensor and the load module includes a pressure electronic oil pump... The control board receives detection signals sent by the sensor module and generates load control signals based on the detection signals, including: the control board receives pressure detection signals sent by the pressure sensor and generates pressure electronic oil pump control signals based on the pressure detection signals; The control board sends the load control signal to the low-voltage connection board, including: the control board sends the pressure electronic oil pump control signal to the low-voltage connection board; The low-voltage connection board sends the load control signal to the load module, including: the low-voltage connection board sends the pressure electronic oil pump control signal to the pressure electronic oil pump; The load module performs corresponding operations according to the load control signal, including: the pressure electronic oil pump performs corresponding operations according to the pressure electronic oil pump control signal.

12. The method according to claim 7, characterized in that, When the load module includes a lubricating electronic oil pump The control board sends the load control signal to the low-voltage connection board, including: the control board sends a lubrication electronic oil pump control signal to the low-voltage connection board; The low-voltage connection board sends the load control signal to the load module, including: the low-voltage connection board sends the lubrication electronic oil pump control signal to the lubrication electronic oil pump; The load module performs corresponding operations according to the load control signal, including: the lubrication electronic oil pump performs corresponding operations according to the lubrication electronic oil pump control signal.

13. A vehicle, characterized in that, Includes the low-voltage control system as described in any one of claims 1-6.

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