CN114132226B

CN114132226B - Fuel cell automobile network architecture and fuel cell automobile

Info

Publication number: CN114132226B
Application number: CN202111163026.4A
Authority: CN
Inventors: 王明锐; 徐李瑶; 方伟; 宫熔; 王秋来
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-05-16
Anticipated expiration: 2041-09-30
Also published as: CN114132226A

Abstract

The invention discloses a fuel cell automobile network architecture and a fuel cell automobile, wherein the fuel cell automobile network architecture comprises: the system comprises a whole vehicle controller, a whole vehicle OBD, a low-voltage component and a high-voltage component, wherein the whole vehicle controller is connected with a vehicle body control network, a power control network and a diagnosis network; the low-voltage component is connected with the vehicle body control network, the high-voltage component is connected with the power control network, and the whole vehicle OBD is connected with the diagnosis network. The invention directly controls each part of the vehicle through the whole vehicle controller, and respectively accesses the parts into different networks based on the own characteristics of each part, thereby avoiding the signal analysis and forwarding process, simplifying the system architecture and improving the control response speed.

Description

Fuel cell automobile network architecture and fuel cell automobile

Technical Field

The invention relates to the technical field of new energy vehicles, in particular to a fuel cell automobile network architecture and a fuel cell automobile.

Background

The environmental protection development trend of the automobile is more obvious. From an energy point of view, more development of renewable energy sources is required. The hydrogen has the characteristics of source diversity, high driving efficiency, zero emission in operation and the like. Therefore, fuel cell automobiles can be more widely used in transportation, construction, industry and more efficient energy storage fields. In the development of fuel cell automobiles, network architecture design is a very important ring. The network architecture itself of either a conventional fuel-powered car or a new energy car is complex. The fuel cell system has a plurality of electric control elements, and the complexity of the network architecture of the fuel cell automobile is further increased.

However, the network architecture structure of the current fuel cell vehicle is relatively complex. In the existing solution, the fuel cell controller is used as a transit node, and the control requirement of the whole vehicle controller is firstly analyzed, and is decomposed into control commands for all parts, and the control commands are communicated to all the parts. Therefore, communication efficiency is low, and when each component is coordinated, there is a possibility that the response of the component is not synchronized.

Disclosure of Invention

In view of the above problems, the invention provides a fuel cell automobile network architecture and a fuel cell automobile, which directly control each component of the automobile through an overall automobile controller, and respectively access each component into different networks based on the characteristics of the component, so that the signal analysis and forwarding processes are avoided, the system architecture is simplified, and the control response speed is improved.

In a first aspect, the present application provides, by way of an embodiment, the following technical solutions:

a fuel cell automotive network architecture comprising: the vehicle control system comprises a vehicle controller, a vehicle OBD, a low-voltage component and a high-voltage component, wherein the vehicle controller is connected to a vehicle body control network, a power control network and a diagnosis network; the low-voltage component is connected with the vehicle body control network, the high-voltage component is connected with the power control network, and the whole vehicle OBD is connected with the diagnosis network.

Optionally, two nodes farthest from each other in the vehicle body control network are respectively connected with at least one first terminal resistor; two nodes which are farthest from each other in the power control network are respectively connected with at least one second terminal resistor; two nodes which are farthest from each other in the diagnosis network are respectively connected with at least one third terminal resistor.

Optionally, the two nodes that are farthest from each other in the vehicle body control network include: a whole vehicle controller and a hydrogen circulating pump controller; the two nodes farthest from each other in the power control network comprise: a whole vehicle controller and a driving motor controller; the two nodes farthest apart in the diagnostic network comprise: vehicle control unit and vehicle OBD.

Optionally, the control unit in the low-voltage component includes: the system comprises a hydrogen circulating pump controller, an infrared hydrogen adding module, a galvanic pile monolithic voltage patrol detector and an air conditioner controller; the hydrogen circulating pump controller, the infrared hydrogenation module, the galvanic pile single-chip voltage patrol detector and the air conditioner controller are all connected to the vehicle body control network.

Optionally, the working unit in the low-voltage component includes: a vehicle lamp and PCT heater; and the car lamp and the PCT heater are connected to the car body control network.

Optionally, the high voltage component comprises: a driving motor controller, a power battery controller, an air compressor controller and a boosting DCDC controller; the driving motor controller, the power battery controller, the air compressor controller and the boosting DCDC controller are connected to the power control network.

Optionally, the vehicle body control network, the power control network and the diagnostic network are all CAN FD networks.

Optionally, the vehicle body control network is a LIN network.

Optionally, the vehicle body control network, the power control network and the diagnostic network are all CAN networks.

In a second aspect, based on the same inventive concept, the present application provides, by way of an embodiment, the following technical solutions:

a fuel cell vehicle comprising the fuel cell vehicle network architecture of any one of the first aspects above.

The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. In the drawings:

fig. 1 is a structural view showing a network architecture of a fuel cell automobile according to a first embodiment of the present invention;

fig. 2 is a schematic diagram showing a specific structure of a fuel cell automobile network architecture according to a first embodiment of the present invention;

fig. 3 is a schematic diagram showing another specific structure of a fuel cell automobile network architecture according to the first embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or interpretation of that item is required in the following figures.

The fuel cell automobile network architecture provided by the embodiment of the invention can be applied to fuel cell vehicles to replace the control network architecture in the existing fuel cell vehicles. Therefore, in the prior art, the fuel cell controller is prevented from being used as a transit node, so that the control requirement of the whole vehicle controller is prevented from being analyzed, the control requirement is decomposed into control commands for all parts, and the control commands are communicated to all the parts; the structure of the network architecture is simplified, and the communication efficiency is provided. In addition, the fuel cell automobile network architecture of the embodiment also avoids setting private network or gateway isolation, effectively improves response speed and ensures synchronization of control and response. In the present invention, the idea of the present invention will be illustrated and described by the following specific examples.

First embodiment

Referring to fig. 1, a schematic structure diagram of a fuel cell automobile network architecture 100 according to a first embodiment of the present invention is shown. The fuel cell automobile network architecture 100 includes: the vehicle control unit 10, the vehicle OBD20 (On Board Diagnostics, on-board automatic diagnostic system), the low voltage component 30 and the high voltage component 40 of the drive motor controller 41.

Specifically, the whole vehicle controller 10 is connected to a vehicle body control network, a power control network and a diagnosis network; the low-voltage component 30 is connected with a vehicle body control network, the high-voltage component 40 is connected with a power control network, and the whole vehicle OBD20 is connected with a diagnosis network. The vehicle controller 10 can directly control various components of the fuel cell system, such as an air compressor, a hydrogen circulating pump, an infrared hydrogen adding module 32, a single-chip voltage inspection device and the like.

Therefore, the fuel cell controller, the fuel cell system OBD and the hydrogen storage controller are completely omitted in the fuel cell vehicle network architecture 100, and the functions of the above components can be all controlled by the whole vehicle controller 10, thereby simplifying the network structure. Meanwhile, when connecting each vehicle body part and controller, the parts and controller are divided into a low-voltage part 30 and a high-voltage part 40 according to the functional characteristics of the parts and controller, and the low-voltage part 30 and the high-voltage part 40 are connected into different control networks without mutual interference, so that the stability and response speed of controlling each part are improved, and the control through a private network or a gateway is avoided.

Further, in some embodiments, two nodes that are farthest from each other in the vehicle body control network are each connected to at least one first termination resistor; two nodes which are farthest from each other in the power control network are respectively connected with at least one second terminal resistor; the two nodes which are farthest from each other in the diagnosis network are respectively connected with at least one third terminal resistor. The first termination resistor, the second termination resistor and the third termination resistor may be composed of one resistor or a plurality of resistors, without limitation.

The terminal resistor is connected with the two farthest nodes in the power control network, the vehicle body control network and the diagnosis network respectively, so that signal reflection and echo can be effectively absorbed, the anti-interference capability of a bus is improved, and the communication quality of signals is improved.

Specifically, two nodes that are farthest apart in the vehicle body control network include: a vehicle control unit 10 and a hydrogen circulation pump control unit 31; the two nodes furthest apart in the power control network comprise: a vehicle controller 10 and a drive motor controller; the two nodes furthest apart in the diagnostic network comprise: a whole vehicle controller 10 and a whole vehicle OBD20. That is, the first termination resistor may be connected to the vehicle body controller 10 and the hydrogen circulation pump controller 31 in the vehicle body control network; the second termination resistor may be provided on the whole vehicle controller 10 and the driving motor controller 41 in the power control network; the third termination resistor may be disposed on the vehicle controller 10 and the vehicle OBD20 in the diagnostic network. For example, the network type is a CAN (Controller Area Network ) network, and when the termination resistors are connected, the termination resistors CAN be connected between CAN-H and CAN-L.

Low pressure component 30 is typically a component of the non-powered system part involved. In the present embodiment, the control unit of the low-voltage part 30 includes, but is not limited to: a hydrogen circulation pump controller 31, an infrared hydrogen adding module 32, a pile monolithic voltage patrol 33 and an air conditioner controller 34. The hydrogen circulating pump controller 31, the infrared hydrogen adding module 32, the electric pile monolithic voltage patrol 33 and the air conditioner controller 34 are all connected to a vehicle body control network, and as shown in fig. 2, the components controlled by the vehicle body control network can be guaranteed to be low-voltage parts and are not influenced by the components of the high-voltage parts. Further, the working units in the low-voltage component 30 include, but are not limited to: a lamp 35 and PCT heater 36, etc.; the car lamp 35 and the PCT heater 36 are connected to a car body control network, and can be isolated from the high-voltage part by controlling the car body control network, so that the working safety of parts is ensured.

The high-pressure component 40 is typically a component related to the powertrain portion of the vehicle. In the present embodiment, the high-voltage component 40 includes, but is not limited to: a driving motor controller 41, a power battery controller 42, an air compressor controller 43, and a boost DCDC controller 44. The driving motor controller 41, the power battery controller 42, the air compressor controller 43 and the boost DCDC controller 44 are all connected to a power control network, as shown in fig. 2. The high-voltage components 40 are connected into a power control network to isolate the low-voltage components 30, so that the influence on control signals of the low-voltage components 30 is avoided, and quick response and stability are ensured.

In the fuel cell vehicle, components such as an air compressor and a hydrogen circulation pump constitute a fuel cell system, but physically they belong to the components of the whole vehicle, and the level thereof is the same as that of a power cell or an air conditioner. In this embodiment, control connection is realized through three independent networks, so that a private network of the fuel cell system is no longer present, a node of the fuel cell controller is omitted, the speed of signal communication of the fuel cell automobile network is improved, and the design of the fuel cell automobile is simplified.

It should also be noted that some components in a fuel cell vehicle may be at high pressure or at low pressure, such as a hydrogen circulation pump. Thus, the above-described implementations of the present application are as one possible example. In other implementations, the hydrogen circulation pump controller 31 may be connected to a corresponding network depending on the specific type of hydrogen circulation pump.

In this embodiment, the vehicle body control network to which the low-voltage component 30 is connected may be implemented by using a LIN (Local Interconnect Network ) network, where the communication rate of the LIN network is generally 10-125Kbps, so that the requirement can be better satisfied. The required communication rate of the components of this section is low and the control signals of the whole vehicle to them will not change frequently due to the change of the working conditions, such as the headlight, air conditioner and PCT heater 36, etc., which can reduce the cost. In addition, CAN network or CAN FD (CAN with Flexible Data rate) network CAN be used.

In this embodiment, the power control network of the high voltage component 40 and the entire OBD20 access the diagnostic network may be implemented using a CAN network. The communication rate of the CAN network is generally 125K-1Mbps, so that the data volume requirement CAN be better met, and the better response speed is ensured. In addition, the power control network and the diagnosis network CAN be realized by adopting a CAN FD network, the communication speed of the CAN FD network CAN reach 5Mbps, the data volume requirements of the power control network and the diagnosis network CAN be better met, and the response speed is ensured, as shown in figure 3.

In summary, the fuel cell vehicle network architecture 100 provided in the present embodiment completely eliminates the fuel cell controller, the fuel cell system OBD and the hydrogen storage controller, and the functions of the above components can be all controlled by the vehicle controller 10, so that the network structure is simplified. Meanwhile, when connecting each vehicle body part and controller, the parts and controller are divided into a low-voltage part 30 and a high-voltage part 40 according to the functional characteristics of the parts and controller, and the low-voltage part 30 and the high-voltage part 40 are connected into different control networks without mutual interference, so that the stability and response speed of controlling each part are improved, and the control through a private network or a gateway is avoided.

Second embodiment

Based on the same inventive concept, in the present embodiment, there is provided a fuel cell vehicle including the fuel cell vehicle network architecture in the first embodiment described above.

It should be noted that, in the fuel cell vehicle provided by the embodiment of the present invention, the specific implementation and the technical effects of the connection structure of each component are the same as those of the foregoing fuel cell vehicle network architecture embodiment, and for brevity, the details of the foregoing method embodiment may be referred to for brevity.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, or those conventionally put in use, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in detail by those skilled in the art.

Claims

1. A fuel cell automotive network architecture, comprising: the vehicle control system comprises a vehicle controller, a vehicle OBD, a low-voltage component and a high-voltage component, wherein the vehicle controller is connected to a vehicle body control network, a power control network and a diagnosis network; the low-voltage component is connected with the vehicle body control network, the high-voltage component is connected with the power control network, and the whole vehicle OBD is connected with the diagnosis network;

the control unit in the low-voltage component includes: the system comprises a hydrogen circulating pump controller, an infrared hydrogen adding module, a galvanic pile monolithic voltage patrol detector and an air conditioner controller; the hydrogen circulating pump controller, the infrared hydrogen adding module, the galvanic pile single-chip voltage patrol detector and the air conditioner controller are all connected to the vehicle body control network;

the high-voltage component includes: a driving motor controller, a power battery controller, an air compressor controller and a boosting DCDC controller; the driving motor controller, the power battery controller, the air compressor controller and the boosting DCDC controller are all connected to the power control network;

the method is characterized in that two nodes which are farthest from each other in the vehicle body control network are respectively connected with at least one first terminal resistor; two nodes which are farthest from each other in the power control network are respectively connected with at least one second terminal resistor; two nodes which are farthest from each other in the diagnosis network are respectively connected with at least one third terminal resistor;

the two nodes farthest from each other in the vehicle body control network comprise: a whole vehicle controller and a hydrogen circulating pump controller; the two nodes farthest from each other in the power control network comprise: a whole vehicle controller and a driving motor controller; the two nodes farthest apart in the diagnostic network comprise: whole car controller and whole car OBD.

2. The fuel cell automotive network architecture of claim 1, wherein the unit of operation in the low voltage component comprises: a vehicle lamp and PCT heater; and the car lamp and the PCT heater are connected to the car body control network.

3. The fuel cell automotive network architecture of claim 1, wherein the body control network, the power control network, and the diagnostic network are CANFD networks.

4. The fuel cell automotive network architecture of claim 1, wherein the body control network is a LIN network.

5. The fuel cell automotive network architecture of claim 1, wherein the body control network, the power control network, and the diagnostic network are CAN networks.

6. A fuel cell vehicle, characterized in that it comprises the fuel cell vehicle network architecture of any one of claims 1-5.