CN210822120U

CN210822120U - Vehicle-mounted bus system and automobile

Info

Publication number: CN210822120U
Application number: CN201921846415.5U
Authority: CN
Inventors: 王海波; 原诚寅
Original assignee: Beijing New Energy Vehicle Technology Innovation Center Co Ltd
Current assignee: Beijing New Energy Vehicle Technology Innovation Center Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-06-23
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a vehicle mounted bus system and car, include: the system comprises a vehicle controller and a plurality of different controller area networks, wherein each controller area network comprises a CAN bus which is connected with the vehicle controller; the vehicle control unit is integrated with a gateway module. The wiring harness connection is simplified, the load rate of the electric CAN is reduced, and the cost of the whole vehicle is reduced.

Description

Vehicle-mounted bus system and automobile

Technical Field

The utility model relates to an automobile control technical field, more specifically relates to a vehicle mounted bus system and car.

Background

The automobile bus widely uses a CAN (controller area network) bus architecture for communication, and the initial CAN network is developed into two, four or more at present. Each CAN bus is connected together by using an independent gateway, so that information interaction among different networks is realized.

As shown in fig. 1, an independent gateway is used in a Vehicle-mounted bus architecture of an existing plug-in hybrid electric Vehicle, a VCU (Vehicle controller) serving as a core component of a whole Vehicle is included in an electric CAN (electric Vehicle CAN) in the plug-in hybrid electric Vehicle, and the VCU is connected with the independent gateway through an electric CAN bus and needs to receive a large number of signals of the whole Vehicle, so that a load rate of the electric CAN is very large; and the independent gateway is connected with a plurality of CAN networks, so that the signal quantity of the route of the independent gateway is very large, higher requirements are put forward on the performance of the independent gateway, the cost of the independent gateway is higher, and meanwhile, the wiring harness connection of the traditional vehicle-mounted bus architecture is complicated.

Therefore, it is necessary to provide a vehicle-mounted bus system capable of simplifying the connection of the wire harness, reducing the load factor of the electric CAN, and reducing the cost of the entire vehicle.

The information disclosed in this background section of the invention is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vehicle bus system and car realizes simplifying the pencil and connects, reduces electronic CAN load factor and reduces whole car cost.

In order to achieve the above object, the utility model provides a vehicle-mounted bus system, include: the system comprises a vehicle controller and a plurality of different controller area networks, wherein each controller area network comprises a CAN bus, and the CAN bus is connected with the vehicle controller;

and the vehicle control unit is integrated with a gateway module.

Optionally, the plurality of controller area networks include an electric controller area network, a power controller area network, a chassis controller area network, a body controller area network, and an infotainment controller area network.

Optionally, the electric controller area network includes a vehicle-mounted charger, a battery management system, a DC/DC converter, and a first CAN bus;

the vehicle-mounted charger, the battery management system and the DC/DC converter are respectively connected with the first CAN bus, and the first CAN bus is connected with the whole vehicle controller.

Optionally, the power controller area network comprises an engine management system, a transmission control unit, an electronic shifter, and a second CAN bus;

the engine management system, the transmission control unit and the electronic gear shifter are respectively connected with the second CAN bus, and the second CAN bus is connected with the whole vehicle controller.

Optionally, the chassis controller area network comprises an electronic stability control system, an electronic power steering system, an airbag control unit and a third CAN bus;

the electronic stability control system, the electronic power steering system and the airbag control unit are respectively connected with a third CAN bus, and the third CAN bus is connected with the whole vehicle controller.

Optionally, the vehicle body controller area network comprises a vehicle body control module, a passive entry/passive start system, an air conditioner, and a fourth CAN bus;

the vehicle body control module, the passive entering/passive starting system and the air conditioner are respectively connected with a fourth CAN bus, and the fourth CAN bus is connected with the whole vehicle controller.

Optionally, the infotainment controller area network comprises an instrument panel, a human-computer interaction system, a remote communication system and a fifth CAN bus;

the instrument panel, the man-machine interaction system and the remote communication system are respectively connected with a fifth CAN bus, and the fifth CAN bus is connected with the whole vehicle controller.

Optionally, the vehicle control system further comprises at least one LIN bus, and the LIN bus is connected with the vehicle control unit.

Optionally, the vehicle control unit is integrated with a plurality of network interfaces, and the plurality of network interfaces include a CAN bus interface and a LIN bus interface.

The utility model discloses still provide an automobile, including above the vehicle mounted bus system.

The beneficial effects of the utility model reside in that:

through at vehicle control unit integration gateway module, a plurality of different controller LAN are connected with vehicle control unit respectively, vehicle control unit CAN carry out relevant calculation to whole vehicle data acquisition, through sending control command to other controllers, realize the control to whole vehicle power, system such as chassis, vehicle control unit CAN also replace traditional independent gateway simultaneously, with a plurality of CAN bus information route between a plurality of different controller LANs, compare in traditional vehicle bus framework, the connection of pencil has been simplified, reduce electronic CAN load factor and reduce whole vehicle cost.

The automobile adopting the vehicle-mounted bus system CAN simplify the connection of the whole automobile wire harness, reduce the load rate of the electric CAN and reduce the cost of the whole automobile.

The apparatus of the present invention has other features and advantages which will be apparent from or are set forth in more detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention with reference to the attached drawings, in which like reference numerals generally represent like parts.

Fig. 1 shows a schematic diagram of a vehicle bus system in the prior art.

Fig. 2 shows a schematic diagram of a vehicle bus system according to an embodiment of the invention.

Description of reference numerals:

1. an electric controller area network; 2. a power controller area network; 3. a chassis controller local area network; 4. a body controller local area network; 5. an infotainment controller local area network; 6. a vehicle control unit; 7. a LIN bus; 8. the electronic control unit 101 and the vehicle-mounted charger; 102. a battery management system; 103. a DC/DC converter; 104. a first CAN bus; 201. an engine management system; 202. a transmission control unit; 203. an electronic shifter; 204. a second CAN bus; 301. an electronic stability control system; 302. an electronic power steering system; 303. an airbag control unit; 304. a third CAN bus; 401. a vehicle body control module; 402. passive entry/passive start systems; 403. an air conditioner; 404. a fourth CAN bus; 501. an instrument panel; 502. a human-computer interaction system; 503. A telecommunications system; 504. and a fifth CAN bus.

Detailed Description

The invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention have been illustrated in the accompanying drawings, it is to be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Fig. 2 shows a schematic diagram of a vehicle bus system according to an embodiment of the present invention, as shown in fig. 2, according to the present invention, a vehicle bus system includes:

the system comprises a vehicle controller 6 and a plurality of different controller area networks, wherein each controller area network comprises a CAN bus, and the CAN bus is connected with the vehicle controller 6; the vehicle control unit 6 is integrated with a gateway module.

Specifically, through at vehicle control unit 6 integration gateway module, a plurality of different controller LANs are connected with vehicle control unit 6 respectively, vehicle control unit 6 CAN carry out relevant calculation to vehicle data collection, through sending control command to other controllers, realize the control to systems such as whole car power, chassis, vehicle control unit 6 CAN also replace traditional independent gateway simultaneously, with a plurality of CAN bus information route between a plurality of different controller LANs, compare in traditional vehicle-mounted bus framework, the relation of connection of pencil has been simplified and CAN effectively reduce electronic CAN load rate. Furthermore, the existing vehicle-mounted summary architecture uses independent gateways, the types of interfaces required to be configured by the independent gateways are more, the development cost is high, and meanwhile, the vehicle-mounted bus system needs to be configured with one independent gateway independently, so that the cost and the wiring harness complexity are increased. The scheme of the invention can reduce the hardware cost of the independent gateway and effectively reduce the development cost of the vehicle-mounted bus system by integrating the gateway module in the normal controller to replace the routing function of the independent gateway. In the specific implementation process, a gateway module is integrated in the existing VCU, related network interfaces of the VCU (vehicle control unit 6) are expanded, the gateway module and the VCU share the original processing chip in the VCU, and related software programs are developed at the same time, so that the VCU can add related gateway routing functions on the basis of the original control functions, and the overall development cost of the vehicle-mounted bus system is effectively reduced. In this embodiment, the vehicle control unit 6 is integrated with a plurality of network interfaces such as a CAN bus interface and a LIN bus interface.

In this embodiment, the plurality of controller lans include an electric controller lan 1, a power controller lan 2, a chassis controller lan 3, a body controller lan 4, and an infotainment controller lan 5.

The electric controller local area network 1 comprises a vehicle-mounted charger 101, a battery management system 102, a DC/DC converter 103 and a first CAN bus 104; the vehicle-mounted charger 101, the battery management system 102 and the DC/DC converter 103 are respectively connected with a first CAN bus 104, and the first CAN bus 104 is connected with the vehicle control unit 6.

The power controller area network 2 comprises an engine management system 201, a transmission control unit 202, an electronic gear shifter 203 and a second CAN bus 204; the engine management system 201, the transmission control unit 202, and the electronic shifter 203 are connected to a second CAN bus 204, and the second CAN bus 204 is connected to the vehicle control unit 6.

The chassis controller local area network 3 comprises an electronic stability control system 301, an electronic power steering system 302, an airbag control unit 303 and a third CAN bus 304; the electronic stability control system 301, the electronic power steering system 302 and the airbag control unit 303 are respectively connected with a third CAN bus 304, and the third CAN bus 304 is connected with the vehicle control unit 6.

The vehicle body controller area network 4 includes a vehicle body control module 401, a passive entry/passive start system 402, an air conditioner 403, and a fourth CAN bus 404; the vehicle body control module 401, the passive entry/passive start system 402, and the air conditioner 403 are respectively connected to a fourth CAN bus 404, and the fourth CAN bus 404 is connected to the vehicle control unit 6.

The infotainment controller area network 5 comprises an instrument panel, a man-machine interaction system, a remote communication system 503 and a fifth CAN bus 504; the instrument panel, the human-computer interaction system and the remote communication system 503 are respectively connected with a fifth CAN bus 504, and the fifth CAN bus 504 is connected with the whole vehicle controller 6.

Specifically, the relevant systems and functional units in the vehicle-mounted charger 101, the battery management system 102, the DC/DC converter 103, the plurality of Electronic Control Units (ECUs), and the like in the power controller lan 2, the chassis controller lan 3, the body controller lan 4, and the infotainment controller lan 5 are all the prior art, and the functions and the relevant working principles thereof are well known to those skilled in the art, and are not described herein again.

In this embodiment, the vehicle control system further comprises two LIN buses 7, and the two LIN buses 7 are respectively connected with the vehicle control unit 6.

Specifically, LIN (local Interconnect network) is a low-cost serial communication network, is used for realizing control of a distributed electronic system in an automobile, CAN provide an auxiliary function for a CAN bus, and reserves two LIN buses 7 for later expansion of an internal interconnection network.

In this embodiment, each controller lan includes an electronic control unit 8, i.e., an ECU (also called a vehicle-mounted computer), which is extended later, and those skilled in the art can extend the controller lan according to actual situations.

According to the utility model discloses an automobile, including above vehicle mounted bus system.

Specifically, the automobile adopting the vehicle-mounted bus system CAN simplify the connection of the wire harness and the electric CAN load rate, and reduce the cost of the whole automobile.

Further, the utility model discloses a technical scheme not only is applicable to and inserts electric formula hybrid vehicle, is applicable to pure electric vehicles equally, and the field personnel can be easy will the utility model discloses a technical scheme is applied to pure electric vehicles, and here is no longer repeated.

Simultaneously the technical scheme of the utility model can also use in the project of reforming into traditional gasoline car and inserting electric formula and thoughtlessly moving the car. In the specific implementation process, the bus architecture of the traditional vehicle is kept unchanged, an electric CAN (including a VCU) is added, and the independent gateway is replaced by the VCU. The VCU is connected with the electric CAN, the power CAN, the chassis CAN, the vehicle body CAN and the infotainment CAN, and routes bus information among different networks; meanwhile, the VCU is used as a whole vehicle controller 6 of the plug-in hybrid electric vehicle, the whole vehicle data is collected, relevant calculation is carried out, control commands are sent to other controllers, control over the whole vehicle power system, the chassis system and other systems is achieved, and two LIN buses are reserved for later network expansion.

While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. An on-board bus system, comprising: the system comprises a vehicle controller and a plurality of different controller area networks, wherein each controller area network comprises a CAN bus, and the CAN bus is connected with the vehicle controller;

and the vehicle control unit is integrated with a gateway module.

2. The vehicle bus system as set forth in claim 1, wherein said plurality of controller area networks comprise an electric controller area network, a power controller area network, a chassis controller area network, a body controller area network, and an infotainment controller area network.

3. The vehicle bus system of claim 2, wherein the electric controller area network comprises a vehicle charger, a battery management system, a DC/DC converter, and a first CAN bus;

4. The on-board bus system of claim 2, wherein the power controller area network comprises an engine management system, a transmission control unit, an electronic shifter, and a second CAN bus;

5. The on-board bus system of claim 2, wherein the chassis controller area network comprises an electronic stability control system, an electronic power steering system, an airbag control unit, and a third CAN bus;

6. The on-board bus system of claim 2, wherein the body controller area network comprises a body control module, a passive entry/passive start system, an air conditioner, and a fourth CAN bus;

7. The vehicle bus system of claim 1, wherein the infotainment controller area network comprises an instrument panel, a human-machine interaction system, a telecommunications system, and a fifth CAN bus;

8. The vehicle bus system as defined in claim 1, further comprising at least one LIN bus connected to the vehicle control unit.

9. The vehicle bus system as set forth in claim 1, wherein the vehicle control unit is integrated with a plurality of network interfaces, the plurality of network interfaces including a CAN bus interface and a LIN bus interface.

10. An automobile, characterized in that it comprises a vehicle bus system according to any one of claims 1 to 9.