Vehicle-mounted network communication architecture and automobile

Abstract

The utility model discloses a vehicle-mounted network communication architecture, which comprises a main controller, a mixed wire harness, a power supply wire harness and a plurality of intelligent control terminals, the mixed wire harness comprises a communication wire for communication, and the plurality of intelligent control terminals are connected and communicated with the main controller through the mixed wire harness; the main controller is used for realizing a whole vehicle coordination control function; the intelligent control terminal is used for realizing a vehicle-mounted electronic appliance control function; the storage battery is connected to the main controller and each intelligent control terminal through a power supply wire harness to supply power to the main controller and each intelligent control terminal. The utility model has the advantages that the communication architecture is simple and reliable, the cost is low, the communication is efficient, and the delay is avoided.

Description

Technical Field

[0001] The utility model relates to the field of in - vehicle communication, and particularly to a vehicle - mounted network communication architecture and an automobile Background Technique

[0002] With the gradual enhancement of ECU computing power and the popularization of advanced technologies for autonomous driving, the requirements for the degree of vehicle intelligence are getting higher and higher. More and more electronic control systems are introduced, from engine control systems, airbags, anti - lock braking systems to tire pressure monitoring systems, keyless entry and start systems, electric seat heating and adjustment, etc. The number of automotive electronic control units (ECUs) has increased significantly, and the vehicle has become a micro - data center.

[0003] The existing automotive electronic architecture is distributed. Each ECU in the vehicle is connected through CAN and LIN buses. When the number of ECUs gradually increases to dozens or even hundreds with the introduction of various systems, the integration difficulty poses a huge challenge to both vehicle manufacturers and suppliers. To solve the above problems, the automotive electronic architecture has begun to transition from distributed to centralized. Through each domain controller, the vehicle functions are divided into several modules such as powertrain, body control, and autonomous driving. With a multi - core domain controller (MCU) with stronger processing power as the center, each domain is relatively centrally controlled, improving the information interaction ability between domain controllers, reducing the number of original ECUs, and lowering the difficulty of vehicle layout and the complexity of the electronic system. However, with the increase in the number of ECUs, whether it is a domain controller or a distributed controller, they all use the architecture of the existing technology for communication interaction, and the existing communication interaction cannot meet the requirements of high - efficiency communication and low cost.

[0004] For example, a vehicle - mounted communication network architecture with a streamlined structure, whose patent application number is CN201921220089.7, cannot solve the above - mentioned technical problems. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies of the existing technology and provide a vehicle - mounted network communication architecture and an automobile, which are used to connect a main controller with multiple intelligent control terminals only by using a hybrid wire harness and a power supply wire, so as to form a high - efficiency and low - cost vehicle - mounted network communication architecture.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a vehicle - mounted network communication architecture, including a main controller, a hybrid wire harness, a power supply wire harness, and several intelligent control terminals; the hybrid wire harness includes communication lines for communication, and several intelligent control terminals are all connected to the main controller through the hybrid wire harness for communication; the main controller is used to realize the overall vehicle coordination control function; the intelligent control terminal is used to realize the vehicle - mounted electronic and electrical control function; the storage battery is respectively connected to the main controller and each intelligent control terminal through the power supply wire harness to supply power to them.

[0007] The hybrid wire harness is composed of two communication lines that are closely attached to the outer wall of the power supply wire harness through insulating tape.

[0008] The hybrid wire harness includes a main hybrid wire harness and each branch hybrid wire harness. The branch hybrid wire harnesses are connected to the main hybrid wire harness by connectors, and the connectors connect the communication lines of the main hybrid wire harness and the branch hybrid wire harnesses correspondingly.

[0009] The power supply wire harness includes a main power supply wire harness and branch power supply wire harnesses. The branch power supply wire harnesses are connected to the main power supply wire harness by connectors.

[0010] The connector is composed of a power electrode pin, a communication pin, and a microcontroller.

[0011] The intelligent control terminals are divided into connected intelligent control terminals and multi - intelligent control terminals. The connected intelligent control terminal includes a local electronic appliance and a connector for connecting to the hybrid wire harness. The multi - intelligent control terminal includes multiple local electronic appliances and a connector for connecting to the hybrid wire harness. The local electronic appliances are connected to the hybrid wire harness through corresponding connectors.

[0012] A vehicle uses the on - vehicle network communication architecture described above for network communication.

[0013] The advantages of the present utility model are as follows: the communication architecture is simple and reliable, with low cost, high communication efficiency, avoiding delays; it is suitable for the development of vehicle electrification and meets the needs of in - vehicle electronic appliance control; the wire harness connection is reliable and does not generate interference. Brief Description of the Drawings

[0014] The following briefly describes the content expressed in each drawing of the present invention specification and the marks in the drawings:

[0015] Figure 1 It is a schematic diagram of the principle of the communication network architecture of the present utility model;

[0016] Figure 2 It is an implementation schematic diagram of the communication network architecture of the present utility model. Detailed Embodiment

[0017] The following further details the specific implementation of the present invention by describing the optimal embodiment with reference to the drawings.

[0018] In this embodiment, a main controller is connected to several intelligent control terminals by using a hybrid wire harness and a power cord to form an efficient and low - cost on - vehicle network communication architecture. The specific network architecture is as Figure 1As shown in the figure, a vehicle-mounted communication architecture includes a main controller, a hybrid harness, a power supply harness, and several intelligent control terminals. The hybrid harness includes communication lines for communication, and several intelligent control terminals are all connected to the main controller through the hybrid harness for communication. The hybrid harness includes a main hybrid harness and each branch hybrid harness, and the connection between each branch hybrid harness and the main hybrid harness depends on a connector, and the connector correspondingly connects the communication lines of the main hybrid harness and the branch hybrid harness. The power supply harness includes a main power supply harness and branch power supply harnesses, and the connection between the branch power supply harnesses and the main power supply harness depends on a connector. The input power source of the power supply harness is a storage battery. The connector is composed of a power electrode pin, a communication pin, and a microcontroller, and the local electronic appliances that need to be controlled are connected to the microcontroller of the connector on the hybrid harness.

[0019] The hybrid harness is composed of two communication lines that are closely attached to the outer wall of the power supply harness through an insulating tape. The hybrid harness is independent of the power supply harness, as Figure 2 shown in the figure. The communication lines are divided into CAN communication lines and Ethernet communication lines. The power supply harness includes a control power line and an input power line. The input power line is connected to the input power ports of each controller, and the control power line is connected to the working power ports of each controller, as Figure 1 .

[0020] In this embodiment, the main controller CMC mainly realizes the coordinated control function of the whole vehicle, and each intelligent control terminal is used to drive and control specific electronic appliances; specifically, the main controller includes a power management unit, a logic control unit, a power interface, a connector, a bus interface, and corresponding sensors and power protection components. The power interface is connected to the positive pole of the storage battery, and corresponding sensors and power protection components are connected between the power interface and the power port of the connector. The bus interface, the power management unit, and the signal port of the connector are all connected to the logic control unit, and the sensor signal terminal and the power protection component are connected to the power management unit.

[0021] The several intelligent control terminals are divided into connected intelligent control terminals and multi-functional intelligent control terminals. The connected intelligent control terminal is formed by connecting a local electronic appliance to a connector on the hybrid harness, and the multi-functional intelligent control terminal is formed by connecting multiple local electronic appliances to a connector on the hybrid harness. The local electronic appliances are connected to the hybrid harness through corresponding connectors. Figure 1 In [figure], ST1, ST2, ST3, and ST4 are all intelligent control terminals, and the intelligent control terminals are respectively connected to the hybrid harness and the power supply harness through connectors 1, 2, 3, and 4.

[0022] As Figure 1Shown is a vehicle-mounted network communication architecture, including a main controller, a hybrid harness, a power supply harness, and several intelligent control terminals. The hybrid harness includes communication lines for communication, and several intelligent control terminals are all connected to the main controller through the hybrid harness for communication. The power supply harness has a battery as its input power source. The hybrid harness includes a main hybrid harness and various branch hybrid harnesses, and the various branch hybrid harnesses are connected to the main hybrid harness by connectors. The main controller includes a power management unit, a logic control unit, a power interface, a connector, a bus interface, and corresponding sensors and power protection components. The power interface is connected to the positive electrode of the battery, and corresponding sensors and power protection components are connected between the power interface and the power port of the connector. The bus interface, the power management unit, and the signal port of the connector are all connected to the logic control unit, and the sensor signal terminal and the power protection component are connected to the power management unit.

[0023] As Figure 2 shown, it is a vehicle electrical network topology diagram designed with the Figure 1 communication architecture. The vehicle electrical network system includes a main controller, 9 multi-functional intelligent control terminals, 9 connectors, and several connected intelligent control terminals. Among them, there are 2 main controllers CMC, which are simplified in the figure. The battery provides power for the main controller CMC. The main controller mainly coordinates and controls the functions of the whole vehicle. It mainly replaces the original VCU, BMS, TBOX, DCDC to implement software functions, that is, the main controller realizes the vehicle coordination control functions such as VCU, BMS, TBOX, DCDC. The instrument panel, OBD port, etc. are connected to the CMC through the CAN line. The CMC is connected to the multi-functional intelligent control terminals ST1, ST2, ST3, ST4, ST9 through the Ethernet cable NEC1 and the connectors on it, and then controls the electronic appliances on the vehicle such as windows, wipers, left and right turn signals, etc. The CMC is connected to the multi-functional intelligent control terminals ST5, ST6, ST7, ST8 through the Ethernet cable NEC2 and the connectors on it, and then controls the chassis domain electronic appliances such as door lock motors, radar sensors, camera lights, hand brakes, etc. Due to the adoption of the above communication architecture, the architecture is simpler and more reliable, the communication is more efficient and the cost is low. Only one hybrid harness and several connectors are needed to achieve this.

[0024] Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A vehicle-mounted network communication architecture, characterized in that: It includes a main controller, a hybrid wire harness, a power supply wire harness, and several intelligent control terminals; the hybrid wire harness includes communication lines for communication, and the several intelligent control terminals are all connected to the main controller through the hybrid wire harness for communication; the main controller is used to implement the overall vehicle coordination control function; the intelligent control terminal is used to implement the in-vehicle electronic and electrical control function; the battery is respectively connected to the main controller and each intelligent control terminal through the power supply wire harness to supply power to them.

2. The in-vehicle network communication architecture according to claim 1, wherein: The hybrid wire harness is composed of two communication lines closely attached to the outer wall of the power supply wire harness through insulating tape.

3. The vehicle-mounted network communication architecture according to claim 1, wherein: The hybrid wire harness includes a main hybrid wire harness and each branch hybrid wire harness. The branch hybrid wire harnesses are connected to the main hybrid wire harness by connectors, and the connectors connect the communication lines of the main hybrid wire harness and the branch hybrid wire harnesses correspondingly.

4. The in-vehicle network communication architecture according to claim 1, characterized in that: The power supply wire harness includes a main power supply wire harness and branch power supply wire harnesses, and the branch power supply wire harnesses are connected to the main power supply wire harness by connectors.

5. The in-vehicle network communication architecture according to claim 2 or 3, characterized in that: The connector is composed of a power electrode pin, a communication pin, and a microcontroller.

6. A vehicle-mounted network communication architecture according to any one of claims 1-4, characterized in that: The intelligent control terminals are divided into connected intelligent control terminals and multi-functional intelligent control terminals. The connected intelligent control terminal includes a local electronic and electrical device and a connecting member for connecting to the hybrid wire harness. The multi-functional intelligent control terminal includes multiple local electronic and electrical devices and a connecting member for connecting to the hybrid wire harness; the local electronic and electrical devices are connected to the hybrid wire harness through corresponding connectors.

7. A vehicle, characterized in that: The vehicle uses the in-vehicle network communication architecture as described in any one of claims 1-6 for network communication.

Images