Vehicle control system and passenger vehicle

Abstract

The invention discloses a vehicle control system and a passenger vehicle, and relates to the technical field of passenger car electronic and electrical systems. The vehicle control system is applied to the passenger vehicle and comprises a vehicle controller and a vehicle heat dissipation device. The vehicle controller is used for monitoring a temperature value of a driving device of the passenger vehicle, determining a fan rotation value based on the temperature value and sending the fan rotation value to the vehicle heat dissipation device; the vehicle heat dissipation device comprises a heat dissipation actuator and a heat dissipation fan, and the heat dissipation actuator is used for receiving the fan revolution value and driving the heat dissipation fan to rotate at the revolution number of the fan revolution value so as to conduct heat dissipation work on the driving device. According to the technical scheme, the heat dissipation capacity of the driving device of the passenger vehicle can be remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of passenger vehicle electronic and electrical systems, and in particular to a vehicle control system and a passenger vehicle. Background Art

[0002] With the gradual expansion of passenger transport business and the continuous improvement of the technical level of passenger vehicles, especially after passenger vehicles entered the new energy era, the operating power of the drive device of passenger vehicles is getting higher and higher, which makes the heat dissipation requirements of the drive device also increase accordingly.

[0003] Currently, a method for dissipating heat from a driving device of a passenger vehicle is to provide a cooling fan in the passenger vehicle. When the driving device of the passenger vehicle is running, the cooling fan rotates at a specific number of revolutions to dissipate heat from the driving device.

[0004] However, when the driving device of a passenger vehicle is running at different loads, the driving device has different requirements for heat dissipation. For example, when the driving device is running at a high load, the heat generated by the driving device is large, and the heat dissipation intensity of the driving device needs to be enhanced. In the existing heat dissipation solution, the cooling fan rotates at a fixed speed, and the heat dissipation intensity of the cooling fan to the driving device cannot be changed according to the load of the driving device, which may cause the driving device to overheat. Therefore, the current method of cooling the driving device of a passenger vehicle has a low heat dissipation capacity for the driving device. Summary of the invention

[0005] In view of this, the present application provides a vehicle control system and a passenger vehicle, the main purpose of which is to solve the technical problem of low heat dissipation capacity for the driving device of the passenger vehicle.

[0006] According to a first aspect of the present invention, there is provided a vehicle control system for use in a passenger vehicle, the vehicle control system comprising a vehicle controller and a vehicle heat dissipation device;

[0007] The vehicle controller is used to monitor the temperature value of the driving device of the passenger vehicle, determine the fan speed value based on the temperature value, and send the fan speed value to the vehicle cooling device;

[0008] The vehicle cooling device includes a cooling actuator and a cooling fan. The cooling actuator is used to receive the fan speed value and drive the cooling fan to rotate at the fan speed value to cool the driving device.

[0009] In an optional embodiment, the vehicle controller determines the fan speed value based on the temperature value, including: the vehicle controller compares the temperature value with multiple preset temperature intervals, wherein each preset temperature interval corresponds to a fan speed value to be selected; determines the preset temperature interval containing the temperature value, and determines the preset temperature interval as a target preset temperature interval, and determines the fan speed value to be selected corresponding to the target preset temperature interval as the fan speed value.

[0010] In an optional embodiment, the vehicle controller is connected to the vehicle cooling device via a controller area network bus.

[0011] In an optional embodiment, the vehicle control system also includes a temperature sensor, which is arranged at the driving device and is used to collect the temperature value of the driving device; the vehicle controller is connected to the temperature sensor so that the vehicle controller obtains the temperature value from the temperature sensor.

[0012] In an optional embodiment, the vehicle controller is connected to the temperature sensor via a controller area network bus.

[0013] In an optional embodiment, the vehicle control system further includes an instrument cluster, which is disposed in a cab of the passenger vehicle; the vehicle controller is connected to the instrument cluster via a controller area network bus.

[0014] In an optional embodiment, the vehicle controller is disposed in a hard shell; the vehicle controller is connected to the vehicle cooling device, the temperature sensor and the instrument cluster via an interface device on the hard shell.

[0015] In an optional embodiment, the heat dissipation actuator receives the fan speed value and drives the heat dissipation fan to rotate at the speed of the fan speed value, including: the heat dissipation actuator receives the fan speed value and determines a preset pulse width modulation signal corresponding to the fan speed value; sends the preset pulse width modulation signal to the heat dissipation fan to drive the heat dissipation fan to rotate at the speed of the fan speed value through the preset pulse width modulation signal.

[0016] According to a second aspect of the present invention, there is provided a passenger vehicle, the passenger vehicle comprising the above-mentioned vehicle control system.

[0017] In an optional embodiment, the driving device of the passenger vehicle includes at least one of an engine and an electric motor.

[0018] The present invention provides a vehicle control system and a passenger vehicle, which monitor the temperature value of the driving device of the passenger vehicle through a vehicle controller, and determine the fan speed value of the vehicle cooling device based on the temperature value of the driving device. Furthermore, the vehicle controller sends the fan speed value to the cooling actuator in the vehicle cooling device, so that the cooling actuator controls the cooling fan in the vehicle cooling device to rotate at the fan speed value to dissipate heat from the driving device. The technical solution provided by the present application can change the speed of the cooling fan based on the temperature value of the driving device of the passenger vehicle to adjust the heat dissipation capacity of the driving device. Compared with the current solution of dissipating heat to the driving device by a cooling fan rotating at a fixed speed, the technical solution of the present application can significantly improve the heat dissipation capacity of the driving device of the passenger vehicle.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of a vehicle control system provided by an embodiment of the present invention is shown;

[0022] Figure 2 A schematic diagram showing the structure of another vehicle control system provided by an embodiment of the present invention is shown;

[0023] Figure 3 A structural schematic diagram of a hard shell provided by an embodiment of the present invention is shown;

[0024] Figure 4 A schematic structural diagram of another hard shell provided by an embodiment of the present invention is shown;

[0025] Figure 5 A system schematic diagram of a control system for a passenger vehicle provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0027] In one embodiment, Figure 1As shown, a vehicle control system is provided, and the system is applied to a passenger vehicle as an example for explanation. The vehicle control system includes a vehicle controller 100 and a vehicle heat dissipation device 200, wherein the vehicle controller 100 may be provided with a temperature control module, the vehicle controller 100 may be a control center of the entire passenger vehicle, and the temperature control module may be a pre-configured software module in the vehicle controller 100, which is used to perform a heat dissipation control function. Further, the vehicle heat dissipation device 200 is used to dissipate heat from the drive device, and the vehicle heat dissipation device 200 is connected to the vehicle controller 100 to establish signal communication with the temperature control module in the vehicle controller 100.

[0028] Further, the vehicle controller 100 can monitor the temperature value of the driving device of the passenger vehicle through the temperature control module, determine the fan speed value based on the temperature value, and send the fan speed value to the vehicle cooling device 200. Here, the vehicle control system may also include a temperature sensor (not shown in the figure), which is arranged at the driving device and is used to collect the temperature value of the driving device. Further, the vehicle controller 100 is connected to the temperature sensor so that the vehicle controller 100 can obtain the temperature value from the temperature sensor.

[0029] Furthermore, the vehicle cooling device 200 includes a cooling actuator 210 and a cooling fan 220. The cooling actuator 210 is an actuator device for controlling the cooling fan 220 to rotate at a specific number of revolutions, and is used to send a control signal to the cooling fan 220 to control the operation of the cooling fan 220. Furthermore, the cooling fan 220 is used to dissipate the coolant flowing out of the drive device. The cooling fan 220 can also be set at the drive device to directly dissipate the heat of the drive device by stirring the airflow. Here, the cooling actuator 210 is used to receive the fan speed value and drive the cooling fan 220 to rotate at the number of revolutions of the fan speed value to dissipate the heat of the drive device.

[0030] Specifically, the vehicle controller 100 determines the fan speed value based on the temperature value, including: first, the vehicle controller 100 compares the temperature value with a plurality of preset temperature intervals, wherein each preset temperature interval corresponds to a preset fan speed value to be selected; as an example, the number of preset temperature intervals may be 3, namely 80 degrees Celsius to 90 degrees Celsius, 91 degrees Celsius to 100 degrees Celsius, and 101 degrees Celsius to 110 degrees Celsius, the preset temperature interval of 80 degrees Celsius to 90 degrees Celsius corresponds to a fan speed value to be selected of 200 revolutions per minute, the preset temperature interval of 91 degrees Celsius to 100 degrees Celsius corresponds to a fan speed value to be selected of 300 revolutions per minute, and the preset temperature interval of 101 degrees Celsius to 110 degrees Celsius corresponds to a fan speed value to be selected of 400 revolutions per minute. The higher the temperature corresponding to the preset temperature interval, the higher the fan speed value to be selected corresponding to the preset temperature interval. Here, if the temperature value of the driving unit is 103 degrees Celsius, the temperature value is within the preset temperature range of 101 degrees Celsius to 110 degrees Celsius.

[0031] Then, the preset temperature interval containing the temperature value is determined, and the preset temperature interval is determined as the target preset temperature interval, and the fan speed value to be selected corresponding to the target preset temperature interval is determined as the fan speed value. Here, if the temperature value of the drive unit is 103 degrees Celsius, which is within the preset temperature interval of 101 degrees Celsius to 110 degrees Celsius, the preset temperature interval of 101 degrees Celsius to 110 degrees Celsius is determined as the target preset temperature interval, and the fan speed value to be selected corresponding to the target preset temperature interval is 400 revolutions per minute. The fan 220 is controlled to rotate at 400 revolutions per minute. Here, the number of preset temperature intervals, the numerical range of the preset temperature interval, and the fan speed value to be selected corresponding to the preset temperature interval can be determined according to actual conditions. Here, for new energy passenger vehicles with strong computing power and control capabilities, if enough preset temperature intervals are set, the numerical range of the preset temperature interval is small, and the difference between the fan speed values ​​to be selected of adjacent preset temperature intervals is small, then stepless speed cooling of the drive device can be achieved.

[0032] The vehicle control system provided in this embodiment monitors the temperature value of the driving device of a passenger vehicle through a vehicle controller, and determines the fan rotation speed value of the vehicle cooling device based on the temperature value of the driving device. Further, the vehicle controller sends the fan rotation speed value to a heat dissipation actuator in the vehicle cooling device, so that the heat dissipation actuator controls the cooling fan in the vehicle cooling device to rotate at the rotation speed of the fan rotation speed value to dissipate heat from the driving device. The technical solution provided in this application can change the rotation speed of the cooling fan based on the temperature value of the driving device of the passenger vehicle to adjust the heat dissipation capacity of the driving device. Compared with the current solution of using a cooling fan rotating at a fixed speed to dissipate heat from the driving device, the technical solution of this application can significantly improve the heat dissipation capacity of the driving device of the passenger vehicle.

[0033] In an alternative embodiment, as Figure 2 shown, the vehicle control system further includes a combination instrument 300, and the combination instrument 300 is arranged in the cab of the passenger vehicle; wherein, the combination instrument 300 can be arranged at the console in the cab to facilitate the driver to read and operate the combination instrument 300.

[0034] Specifically, the vehicle controller 100 is connected to the combination instrument 300 through a Controller Area Network (CAN) bus. The vehicle controller 100 can collect vehicle information such as the speed value of the passenger vehicle and send the vehicle information to the combination instrument 300, so that the combination instrument 300 displays the vehicle information. At the same time, the driver can control the passenger vehicle through the combination instrument 300, improving the operation convenience of the passenger vehicle. The embodiment provided in this application enables the driver of the passenger vehicle to know the vehicle state of the passenger vehicle through the combination instrument and can control the passenger vehicle accordingly based on the combination instrument, improving the functionality of the vehicle control system.

[0035] In an alternative embodiment, as Figure 3 shown, the vehicle controller (not shown in the figure) is arranged in a rigid housing 400, and the rigid housing 400 is provided with a plurality of interface devices 410. Further, the vehicle controller is connected to the vehicle cooling device (not shown in the figure), the temperature sensor (not shown in the figure), and the combination instrument (not shown in the figure) through the interface device 410 on the rigid housing 400.

[0036] Specifically, the vehicle controller in the hard shell 400 can be connected to an interface device 410, and connected to the vehicle cooling device through the controller area network bus via the interface device 410. Further, the vehicle controller can also be connected to another interface device 410, and connected to the temperature sensor through the controller area network bus via the interface device 410. Further, the vehicle controller can also be connected to another interface device 410, and connected to the combination meter through the controller area network bus via the interface device 410.

[0037] Here, the hard shell 400 of the conventional fuel passenger vehicle is in the form of Figure 3 As shown, the form of the hard shell 400 of the new energy vehicle is as follows Figure 4 As shown, the vehicle controller (not shown in the figure) is arranged in the hard shell 400, and the hard shell 400 also has a plurality of interface devices 410. The vehicle controller is connected to the vehicle cooling device (not shown in the figure), the temperature sensor (not shown in the figure) and the combination meter (not shown in the figure) through the interface devices 410 on the hard shell 400.

[0038] The technical solution provided by the present application integrates the control functions of a passenger vehicle into a vehicle controller, and sets the vehicle controller in a hard shell, so that the vehicle controller can be easily transplanted. The vehicle controller can be transplanted to different passenger vehicles according to actual conditions, thereby improving the versatility of the vehicle control system.

[0039] In an optional embodiment, the heat dissipation actuator receives the fan speed value and drives the heat dissipation fan to rotate at the fan speed value, including:

[0040] First, the heat dissipation actuator receives the fan speed value and determines a preset pulse width modulation signal (Pulse Width Modulation, PWM) corresponding to the fan speed value; wherein each fan speed value corresponds to a preset pulse width modulation signal, and each fan speed value corresponds to a preset pulse width modulation signal with a different duty cycle and pulse frequency, and each preset pulse width modulation signal is used to drive the heat dissipation fan to rotate at a specific speed. Specifically, the preset pulse width modulation signal corresponding to the fan speed value can be determined based on the fan speed value.

[0041] Then, the preset pulse width modulation signal is sent to the heat dissipation fan, so as to drive the heat dissipation fan to rotate at the fan speed value through the preset pulse width modulation signal.

[0042] Here, specific duty cycle parameters and pulse frequency parameters can also be pre-set for each fan speed value. When the heat dissipation actuator receives the fan speed value, it can determine the duty cycle parameters and pulse frequency parameters corresponding to the fan speed value, and generate a pulse width modulation signal with the duty cycle parameters and pulse frequency parameters, and send the pulse width modulation signal to the heat dissipation fan to drive the heat dissipation fan to rotate at the speed of the fan speed value.

[0043] In the embodiment provided by the present application, the heat dissipation actuator can control the number of revolutions of the cooling fan through a pulse width modulation signal to control the heat dissipation intensity of the cooling fan, and can control the cooling fan more accurately, thereby improving the heat dissipation capacity of the vehicle control system for the drive device of the passenger vehicle.

[0044] The vehicle control system provided in the present application has control devices such as a combination instrument and a vehicle controller, which can monitor the temperature of the drive device and adjust the heat dissipation intensity of the vehicle heat dissipation device to the drive device based on the temperature of the drive device, thereby improving the heat dissipation capacity of the drive device of passenger vehicles.

[0045] On the other hand, an embodiment of the present invention provides a passenger vehicle, wherein the passenger vehicle comprises the vehicle control system as described above. Here, the driving device of the passenger vehicle comprises at least one of an engine and an electric motor.

[0046] Further, such as Figure 5 As shown, the vehicle controller 100 and the heat dissipation actuator 210 in the passenger vehicle are connected via a CAN bus to communicate information based on the CAN bus; further, the heat dissipation actuator 210 communicates with the heat dissipation fan 220 via a PWM signal to control the heat dissipation intensity of the heat dissipation fan 220. The vehicle controller 100 and the engine 600, as well as the vehicle controller 100 and the motor 500 are connected via a CAN bus to communicate information based on the CAN bus to achieve the integration of the control system. Here, if the passenger vehicle is a traditional fuel vehicle, the vehicle controller 100 is a multi-domain controller (Multi-Domain Controller, MDC), and if the passenger vehicle is a new energy vehicle, the vehicle controller 100 is a vehicle controller. The control system of the passenger vehicle provided in this embodiment is highly integrated, eliminating redundant control devices such as the engine intelligent cooling system (Auto Temperature Control System Of Engine, ATS), and significantly reducing the vehicle cost of the passenger vehicle.

[0047] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. A vehicle control system, characterized in that: Applied in passenger vehicles, the vehicle control system includes a vehicle controller and a vehicle cooling device; The vehicle controller is used to monitor the temperature value of the driving device of the passenger vehicle, determine the fan speed value based on the temperature value, and send the fan speed value to the vehicle cooling device; The vehicle cooling device includes a cooling actuator and a cooling fan. The cooling actuator is used to receive the fan speed value and drive the cooling fan to rotate at the fan speed value to cool the driving device.

2. The vehicle control system according to claim 1, characterized in that: The vehicle controller determines the fan speed value based on the temperature value, including: The vehicle controller compares the temperature value with a plurality of preset temperature intervals, wherein each of the preset temperature intervals corresponds to a fan speed value to be selected; The preset temperature interval including the temperature value is determined, and the preset temperature interval is determined as a target preset temperature interval, and the to-be-selected fan speed value corresponding to the target preset temperature interval is determined as the fan speed value.

3. The vehicle control system according to claim 1, characterized in that: The vehicle controller is connected to the vehicle heat dissipation device via a controller area network bus.

4. The vehicle control system according to claim 2, characterized in that: The vehicle control system further comprises a temperature sensor, which is disposed at the driving device and is used to collect a temperature value of the driving device; The vehicle controller is connected to the temperature sensor so that the vehicle controller obtains the temperature value from the temperature sensor.

5. The vehicle control system according to claim 4, characterized in that: The vehicle controller is connected to the temperature sensor via a controller area network bus.

6. The vehicle control system according to claim 4, characterized in that: The vehicle control system further comprises a combination instrument, which is arranged in the driving cab of the passenger vehicle; The vehicle controller is connected to the combination meter via a controller area network bus.

7. The vehicle control system according to claim 6, characterized in that: The vehicle controller is disposed in a hard housing; The vehicle controller is connected to the vehicle cooling device, the temperature sensor and the combined instrument through an interface device on the hard shell.

8. The vehicle control system according to claim 1, characterized in that: The method in which the heat dissipation actuator receives the fan speed value and drives the heat dissipation fan to rotate at the speed of the fan speed value includes: The heat dissipation actuator receives the fan speed value and determines a preset pulse width modulation signal corresponding to the fan speed value; The preset pulse width modulation signal is sent to the heat dissipation fan, so as to drive the heat dissipation fan to rotate at the fan speed value through the preset pulse width modulation signal.

9. A passenger vehicle, characterized in that: The passenger vehicle comprises a vehicle control system as claimed in any one of claims 1 to 8.

10. The passenger vehicle according to claim 9, characterized in that: The driving device of the passenger vehicle includes at least one of an engine and an electric motor.

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