Electric vehicle CAN bus control system

Abstract

The utility model relates to the technical field of electric vehicles, and discloses an electric vehicle CAN bus control system which comprises a whole vehicle controller, a vehicle lighting system, a warning system, a power-assisted steering system, a braking system, a driving system, a parking system and a CAN bus. The vehicle lighting system, the warning system, the power-assisted steering system, the braking system, the driving system and the parking system are all in communication connection with the whole vehicle controller through a CAN bus, the CAN bus comprises a CAN controller and a CAN receiving and transmitting end, and the CAN controller is in signal connection with the CAN receiving and transmitting end; according to the arrangement, the complexity of the whole vehicle wire harness is simplified, the overall reliability of the system is remarkably improved, and the electrical cost of the whole vehicle is effectively reduced; meanwhile, the safety and the accuracy of the system in the data sending, transmitting and receiving processes are greatly enhanced, and a powerful guarantee is provided for stable operation of the electric automobile.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a CAN bus control system for an electric vehicle. Background Art

[0002] As society's requirements for automobile quality continue to increase, microprocessors and electronic control technologies are widely used in modern automobile design, which covers many key components such as controllers, actuators and sensors to achieve more accurate and efficient vehicle control; in order to meet the needs of real-time monitoring of vehicle operating status, corresponding display instruments and displays are installed on the car dashboard to intuitively display the values ​​and status information transmitted by these controllers, actuators and sensors. This setting not only requires the instrument assembly to achieve a perfect combination of analog and digital signals, but also to ensure the accuracy and stability of signal transmission.

[0003] In practical applications, controllers, actuators, sensors, and display instruments and displays need to be closely connected through wires or cables to achieve high-speed data exchange. As the amount of data transmission continues to increase, the number of wiring harnesses and connectors required also increases accordingly, which not only increases the complexity of the vehicle's electrical system, but also has an adverse effect on its aesthetics and reliability. In addition, the increase in wiring harnesses and connectors has also led to an increase in the electrical cost of the vehicle, bringing additional economic pressure to automakers. Therefore, how to reduce the complexity and cost of the electrical system while ensuring data transmission efficiency and accuracy has become a problem that needs to be solved in the current automotive design field. Utility Model Content

[0004] In order to solve the technical problems of low efficiency and accuracy of existing CAN bus data transmission, and high complexity and cost of electrical systems, the present application provides an electric vehicle CAN bus control system.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A CAN bus control system for an electric vehicle comprises a vehicle controller, a vehicle lighting system, a warning system, a steering assist system, a braking system, a drive system, a parking system and a CAN bus. The vehicle lighting system, the warning system, the steering assist system, the braking system, the drive system and the parking system are all communicatively connected with the vehicle controller via the CAN bus. The CAN bus comprises a CAN controller and a CAN transceiver, and the CAN controller and the CAN transceiver are signal-connected.

[0007] As one of the optimized implementation schemes of the utility model, the CAN bus is used to receive data information of the vehicle lighting system, warning system, power steering system, braking system, drive system and parking system and perform protocol conversion, and send the converted data to the vehicle controller for processing; and / or convert the data sent by the vehicle controller and send it to the vehicle lighting system, warning system, power steering system, braking system, drive system and parking system.

[0008] As one of the optimized implementation schemes of the utility model, the CAN controller and the CAN transceiver communicate based on the CAN_HIGH signal line and the CAN_LOW signal line for transmitting data signals.

[0009] As one of the optimized implementation schemes of the utility model, the electric vehicle CAN bus control system also includes a dashboard, and the CAN transceiver is communicatively connected to a dashboard signal receiving end.

[0010] As one of the optimized implementation schemes of the utility model, the warning system includes a tire pressure monitoring system and a vehicle status monitoring system.

[0011] Compared with the prior art, the advantages of the utility model are: the utility model realizes communication connection with the vehicle controller through the CAN bus through the vehicle lighting system, warning system, steering power system, braking system, drive system and parking system of the electric vehicle, and relies on the CAN bus for signal processing transmission mechanism. This setting not only simplifies the complexity of the vehicle wiring harness, but also significantly improves the overall reliability of the system and effectively reduces the electrical cost of the vehicle; at the same time, it also greatly enhances the safety and accuracy of the system in the process of data sending, transmission and receiving, providing a strong guarantee for the stable operation of electric vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0013] Figure 1 It is a structural block diagram of an electric vehicle CAN bus control system provided by the first embodiment of the utility model.

[0014] Figure 2 It is a schematic diagram of the connection between the CAN bus of the electric vehicle CAN bus control system and the vehicle lighting system provided by the first embodiment of the utility model.

[0015] Among them: 1. Vehicle controller; 2. Vehicle lighting system; 3. Warning system; 4. Power steering system; 5. Braking system; 6. Drive system; 7. Parking system; 8. CAN bus; 9. CAN controller; 10. CAN transceiver; 11. Instrument panel; 12. Tire pressure monitoring system; 13. Vehicle status monitoring system. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0018] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0019] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0020] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0021] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] Example:

[0023] Please combine Figure 1 and Figure 2 A CAN bus 8 control system for an electric vehicle provided in the first embodiment of the utility model includes a vehicle controller 1, a vehicle lighting system 2, a warning system 3, a steering assist system 4, a braking system 5, a drive system 6, a parking system 7 and a CAN bus 8. The vehicle lighting system 2, the warning system 3, the steering assist system 4, the braking system 5, the drive system 6, and the parking system 7 are all connected to the vehicle controller 1 through the CAN bus 8. The CAN bus 8 includes a CAN controller 9 and a CAN transceiver 10. The CAN controller 9 and the CAN transceiver 10 are connected by signals.

[0024] It is explained that the vehicle lighting system 2, warning system 3, power steering system 4, brake system 5, drive system 6 and parking system 7 of the electric vehicle are all connected to the vehicle controller 1 through the CAN bus 8. The transmission after signal processing based on the CAN bus 8 can simplify the vehicle wiring harness, improve system reliability, reduce the electrical cost of the vehicle, and improve the safety and accuracy of the data sending, transmission and receiving processes of the system.

[0025] Furthermore, the CAN bus 8 is used to receive data information from the vehicle lighting system 2, warning system 3, power steering system 4, braking system 5, drive system 6 and parking system 7 and perform protocol conversion, and send the converted data to the vehicle controller 1 for processing; and / or convert the data sent by the vehicle controller 1 and send it to the vehicle lighting system 2, warning system 3, power steering system 4, braking system 5, drive system 6 and parking system 7.

[0026] Furthermore, the CAN controller 9 and the CAN transceiver 10 communicate based on the CAN_HIGH signal line and the CAN_LOW signal line to transmit data signals.

[0027] Furthermore, the electric vehicle CAN bus 8 control system also includes a dashboard 11 , and the CAN transceiver 10 is communicatively connected to a signal receiving end of the dashboard 11 .

[0028] It is explained that, via the transceiver of the CAN bus 8, the status data can be transmitted to the instrument panel 11 for display. This setting can realize the accurate, intuitive and clear presentation of the running status of the car at any time; the storage function of dynamic data provides accurate information support for the driving of the car.

[0029] As an optional implementation, the instrument panel 11 uses liquid crystal or LED display technology to improve the effect of data display.

[0030] Furthermore, the warning system 3 includes a tire pressure monitoring system 12 and a vehicle state monitoring system 13 .

[0031] It is explained that the relevant monitoring data of various controllers, actuators and sensors such as the tire pressure monitoring system 12 and the door status monitoring system are accurately and stably transmitted to the instrument panel 11 through the CAN bus 8; when the system detects an erroneous operation or a fault, it will automatically trigger the corresponding warning mechanism and provide timely and clear feedback to the driver by issuing a real voice prompt. This setting improves the intelligence level of the vehicle and greatly meets people's pursuit of safety, convenience and humanization needs of modern automobiles.

[0032] It can be understood that the utility model realizes communication connection with the vehicle controller 1 through the CAN bus 8 through the vehicle lighting system 2, warning system 3, steering assist system 4, braking system 5, drive system 6 and parking system 7 of the electric vehicle, and relies on the CAN bus 8 for signal processing. This setting not only simplifies the complexity of the vehicle wiring harness, but also significantly improves the overall reliability of the system and effectively reduces the electrical cost of the vehicle; at the same time, it also greatly enhances the safety and accuracy of the system in the process of data sending, transmission and receiving, and provides a strong guarantee for the stable operation of the electric vehicle.

[0033] Specific examples are used in this article to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method of the utility model and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scope. Changes and improvements to the utility model will be possible without exceeding the concept and scope specified in the attached claims. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. An electric vehicle CAN bus control system, characterized in that: It includes a vehicle controller, a vehicle lighting system, a warning system, a steering power system, a braking system, a driving system, a parking system and a CAN bus. The vehicle lighting system, the warning system, the steering power system, the braking system, the driving system and the parking system are all communicatively connected with the vehicle controller via the CAN bus. The CAN bus includes a CAN controller and a CAN transceiver. The CAN controller and the CAN transceiver are signal-connected.

2. The electric vehicle CAN bus control system according to claim 1, characterized in that: The CAN bus is used to receive data information from the vehicle's lighting system, warning system, power steering system, brake system, drive system and parking system and perform protocol conversion, and send the converted data to the vehicle controller for processing; and / or convert the data sent by the vehicle controller and send it to the vehicle's lighting system, warning system, power steering system, brake system, drive system and parking system.

3. The electric vehicle CAN bus control system according to claim 2, characterized in that: The CAN controller and the CAN transceiver communicate based on a CAN_HIGH signal line and a CAN_LOW signal line for transmitting data signals.

4. The electric vehicle CAN bus control system according to claim 3, characterized in that: The electric vehicle CAN bus control system also includes a dashboard, and the CAN transceiver is communicatively connected with a dashboard signal receiving end.

5. The electric vehicle CAN bus control system according to claim 1, characterized in that: The warning system includes a tire pressure monitoring system and a vehicle status monitoring system.

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