CN114454830B - Fuel cell automobile network architecture and fuel cell automobile - Google Patents
Fuel cell automobile network architecture and fuel cell automobile Download PDFInfo
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- CN114454830B CN114454830B CN202210057494.1A CN202210057494A CN114454830B CN 114454830 B CN114454830 B CN 114454830B CN 202210057494 A CN202210057494 A CN 202210057494A CN 114454830 B CN114454830 B CN 114454830B
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- 239000000446 fuel Substances 0.000 title claims abstract description 85
- 238000003745 diagnosis Methods 0.000 claims abstract description 20
- 238000002592 echocardiography Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 208000035139 partial with pericentral spikes epilepsy Diseases 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a fuel cell automobile network architecture and a fuel cell automobile, wherein the operation of all electronic devices in each device group of the fuel cell automobile network architecture can be uniformly managed by a single domain controller, so that the fuel cell automobile network architecture only needs four domain controllers, the quantity of wire harnesses needed between a vehicle-mounted diagnosis system and the electronic devices and between the domain controllers and the corresponding domain controllers is small, the network architecture is greatly simplified, the complexity of the network architecture is reduced, and the network communication efficiency is improved.
Description
Technical Field
The invention relates to the technical field of fuel cell automobiles, in particular to a fuel cell automobile network architecture and a fuel cell automobile.
Background
With the increase of the electronic degree of the fuel cell automobile, more and more controllers are arranged on the fuel cell automobile, and the electronic devices and the controllers on the automobile and the controllers are required to be communicated with each other. In order to construct a complete communication network, a large number of wire harnesses are used in a traditional fuel cell automobile network architecture to realize connection between devices, so that the whole network architecture is particularly complex.
Disclosure of Invention
The invention solves the technical problems of large wire harness quantity and complex structure used by the fuel cell automobile network architecture in the prior art by providing the fuel cell automobile network architecture and the fuel cell automobile.
On one hand, the embodiment of the invention provides the following technical scheme:
a fuel cell automobile network architecture comprises a first domain controller, a second domain controller, a third domain controller, a fourth domain controller, a first device group, a second device group, a third device group, a fourth device group and an on-vehicle diagnosis system;
the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected through a communication bus;
the first device group comprises all electronic devices related to power and all electronic devices of the fuel cell system, the first domain controller is connected with all electronic devices in the first device group and the first domain controller is connected with the vehicle-mounted diagnosis system through a communication bus, and the first domain controller is used for controlling all electronic devices in the first device group and the vehicle-mounted diagnosis system to operate;
the second device group comprises all electronic devices related to vehicle body control and chassis electric control, the second domain controller is connected with all electronic devices in the second device group through a communication bus, and the second domain controller is used for controlling all electronic devices in the second device group to operate;
the third device group comprises all electronic devices related to automatic driving, the third domain controller is connected with all electronic devices in the third device group through a communication bus, and the third domain controller is used for controlling all electronic devices in the third device group to operate;
the fourth device group comprises all electronic devices related to video entertainment, the fourth domain controller is connected with all electronic devices in the fourth device group through a communication bus, and the fourth domain controller is used for controlling all electronic devices in the fourth device group to operate;
the terminal resistor is used for absorbing the reflected signals and echoes;
when the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected at least through a CAN bus, a terminal resistor is respectively arranged on two nodes with the farthest connection distance in an independent CAN network formed by elements connected through the CAN bus;
or (b)
When the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected at least through a CAN FD bus, a terminal resistor is respectively arranged on two nodes with the farthest connection distance in an independent CAN FD network formed by elements connected through the CAN FD bus;
the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected through one or more modes of a CAN bus, a CAN FD bus and an Ethernet.
Preferably, the first domain controller is connected to all electronic devices in the first device group, the first domain controller is connected to the on-board diagnostic system, the second domain controller is connected to all electronic devices in the second device group, the third domain controller is connected to all electronic devices in the third device group, or the fourth domain controller is connected to all electronic devices in the fourth device group through one of a CAN bus, a CAN FD bus, and an ethernet.
Preferably, all electronic devices in the first device group, all electronic devices in the second device group, all electronic devices in the third device group, all electronic devices in the fourth device group, or all electronic devices in the fourth device group are connected by a CAN bus or a CAN FD bus.
Preferably, when all electronic devices in the first domain controller and the first device group, between the first domain controller and the vehicle-mounted diagnostic system, between the second domain controller and all electronic devices in the second device group, between the third domain controller and all electronic devices in the third device group or between the fourth domain controller and all electronic devices in the fourth device group are connected through a CAN bus, a terminal resistor is respectively arranged on two nodes which are furthest connected in at least one independent CAN network formed by elements connected through the CAN bus;
or (b)
When all electronic devices in the first domain controller and the first device group, between the first domain controller and the vehicle-mounted diagnostic system, between the second domain controller and all electronic devices in the second device group, between the third domain controller and all electronic devices in the third device group or between the fourth domain controller and all electronic devices in the fourth device group are connected through a CAN FD bus, a terminal resistor is respectively arranged on two nodes which are furthest connected in at least one independent CAN FD network formed by elements connected through the CAN FD bus.
Preferably, the first domain controller comprises a power domain controller and a fuel cell domain controller, and the first device group comprises a first device group and a second device group; the second domain controller comprises a vehicle body domain controller and a chassis domain controller, and the second device group comprises a third device group and a fourth device group;
the power domain controller, the fuel cell domain controller, the vehicle body domain controller, the chassis domain controller, the third domain controller and the fourth domain controller are connected through a communication bus;
the power domain controller is used for controlling the operation of all the electronic devices in the first device group and the vehicle-mounted diagnosis system;
the second device group comprises all electronic devices of the fuel cell system, the fuel cell domain controller is connected with all electronic devices in the second device group through a communication bus, and the fuel cell domain controller is used for controlling all electronic devices in the second device group to operate;
the third device group comprises all electronic devices related to vehicle body control, the vehicle body domain controller is connected with all electronic devices in the third device group through a communication bus, and the vehicle body domain controller is used for controlling all electronic devices in the third device group to operate;
the fourth device group comprises all electronic devices related to chassis electric control, the chassis domain controller is connected with all electronic devices in the fourth device group through a communication bus, and the chassis domain controller is used for controlling all electronic devices in the fourth device group to operate.
Preferably, the power domain controller, the fuel cell domain controller, the vehicle body domain controller, the chassis domain controller, the third domain controller and the fourth domain controller are connected with each other through a CAN bus, and the power domain controller, the fuel cell domain controller, the third domain controller and the fourth domain controller are also connected with each other through a CAN FD bus and an ethernet.
On the other hand, the embodiment of the invention also provides the following technical scheme:
a fuel cell vehicle comprising any of the fuel cell vehicle network architectures described herein.
The one or more technical schemes provided by the invention have at least the following technical effects or advantages:
the operation of all electronic devices in each device group of the fuel cell automobile network architecture can be uniformly managed by a single domain controller, so that the fuel cell automobile network architecture only needs four domain controllers, the quantity of wire harnesses needed between an on-board diagnosis system and the electronic device and between the domain controller and the corresponding domain controller is small, the network architecture is greatly simplified, the complexity of the network architecture is reduced, and the network communication efficiency is improved.
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.
FIG. 1 is a schematic diagram of a fuel cell vehicle network architecture in accordance with an embodiment of the present invention;
fig. 2 is another schematic diagram of a fuel cell vehicle network architecture according to an embodiment of the invention.
Detailed Description
The embodiment of the invention solves the technical problems of large wire harness quantity and complex structure used by the fuel cell automobile network architecture in the prior art by providing the fuel cell automobile network architecture and the fuel cell automobile.
In order to better understand the technical scheme of the present invention, the following detailed description will refer to the accompanying drawings and specific embodiments.
First, the term "and/or" appearing herein is merely an association relationship describing associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
As shown in fig. 1, the fuel cell automobile network architecture of the present embodiment includes a first domain controller, a second domain controller, a third domain controller, a fourth domain controller, a first device group, a second device group, a third device group, a fourth device group, and an on-board diagnostic system;
the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected through a communication bus;
the first device group comprises all electronic devices related to power and all electronic devices of the fuel cell system, the first domain controller is connected with all electronic devices in the first device group and the first domain controller is connected with the vehicle-mounted diagnosis system through a communication bus, and the first domain controller is used for controlling all electronic devices in the first device group and the vehicle-mounted diagnosis system to operate;
the second device group comprises all electronic devices related to vehicle body control and chassis electric control, the second domain controller is connected with all electronic devices in the second device group through a communication bus, and the second domain controller is used for controlling all electronic devices in the second device group to operate;
the third device group comprises all electronic devices related to automatic driving, the third domain controller is connected with all electronic devices in the third device group through a communication bus, and the third domain controller is used for controlling all electronic devices in the third device group to operate;
the fourth device group comprises all electronic devices related to video entertainment, the fourth domain controller is connected with all electronic devices in the fourth device group through a communication bus, and the fourth domain controller is used for controlling all electronic devices in the fourth device group to operate.
In the traditional fuel cell automobile network architecture, all electronic devices in a first device group are controlled by a plurality of controllers, all electronic devices in a second device group are controlled by a plurality of controllers, all electronic devices in a third device group are controlled by a plurality of controllers, and all electronic devices in a fourth device group are controlled by a plurality of controllers, so that more controllers are needed, and the quantity of wire harnesses needed between the electronic devices and the corresponding controllers and between the controllers is large, so that the network architecture has large wire harness quantity and complex structure.
In this embodiment, the first device group includes driving motor controller, power battery controller, on-vehicle machine that charges, air compressor machine controller, hydrogen circulating pump controller, step up direct current converter, infrared hydrogen module, monolithic voltage inspection ware etc. the second device group includes air conditioner controller, tire pressure monitor, PEPS, ESC, EPS, EPB etc. the third device group includes camera, ultrasonic radar, laser radar etc. the fourth device group includes instrument, well accuse amusement screen, HUD etc.. The driving motor controller, the power battery controller, the vehicle-mounted charger and the like belong to the power domain, and the hydrogen circulating pump controller, the boosting direct current converter, the infrared hydrogen adding module, the single-chip voltage inspection device and the like belong to the fuel cell domain. An air conditioner controller, a tire pressure monitor, PEPS and the like belong to a vehicle body domain, and ESC, EPS, EPB and the like belong to a chassis domain. The camera, the ultrasonic radar, the laser radar and the like belong to an autopilot domain, the instrument, the central control entertainment screen, the HUD and the like belong to an audio-visual entertainment domain, so that the third domain controller can also be called an autopilot domain controller, and the fourth controller can also be called an audio-visual entertainment domain controller.
In this embodiment, since functions of all electronic devices and the vehicle-mounted diagnostic system in the first device group are related and similar, operations of all electronic devices and the vehicle-mounted diagnostic system in the first device group may be managed by the first domain controller; because the functions of all the electronic devices in the second device group are related and similar, the operation of all the electronic devices in the second device group can be uniformly managed by the second domain controller; because the functions of all the electronic devices in the third device group are related and similar, the operation of all the electronic devices in the third device group can be uniformly managed by the third domain controller; because the functions of all the electronic devices in the fourth device group are related and similar, the operation of all the electronic devices in the fourth device group can be uniformly managed by the fourth domain controller; therefore, the network architecture of the fuel cell automobile only needs four domain controllers, the quantity of wire harnesses needed between the vehicle-mounted diagnosis system and the electronic device and between the domain controllers is small, the network architecture is greatly simplified, the complexity of the network architecture is reduced, and the network communication efficiency is improved.
In this embodiment, the first domain controller, the second domain controller, the third domain controller, and the fourth domain controller may be connected by one or more of a CAN bus, a CAN FD bus, and an ethernet. The first domain controller may be connected to all electronic devices in the first device group, the first domain controller may be connected to the on-board diagnostic system, the second domain controller may be connected to all electronic devices in the second device group, the third domain controller may be connected to all electronic devices in the third device group, or the fourth domain controller may be connected to all electronic devices in the fourth device group via one of a CAN bus, a CAN FD bus, and an ethernet network.
A preferred bus connection scheme is presented here: as shown in fig. 1, the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected with each other through a CAN FD bus, and the first domain controller, the third domain controller and the fourth domain controller are also connected with each other through an ethernet; all the electronic devices in the first domain controller and the first device group, all the electronic devices in the first domain controller and the vehicle-mounted diagnosis system, all the electronic devices in the second domain controller and the second device group are connected through a CAN FD bus, all the electronic devices in the third domain controller and the third device group, and all the electronic devices in the fourth domain controller and the fourth device group are connected through Ethernet. In the bus connection scheme, the cost of the CAN FD network is lower than that of the Ethernet, and the communication rate of the CAN FD network is lower than that of the Ethernet. Considering that the partial communication among the first domain controller, the third domain controller and the fourth domain controller has high requirement on the communication rate, the Ethernet communication is increased, and high-speed communication can be provided; considering that the communication between the second domain controller and other controllers has low requirements on the communication rate, only CAN FD communication is provided, and the cost is saved while the communication requirements are met; the communication between the first domain controller and all the electronic devices in the first device group, between the first domain controller and the on-board diagnosis system, and between the second domain controller and all the electronic devices in the second device group has low requirements on the communication rate, so that CAN FD network communication is provided; communication between the third domain controller and all electronic devices within the third device group and between the fourth domain controller and all electronic devices within the fourth device group is demanding on the communication rate, thus providing ethernet communication.
Generally, when elements are connected through a CAN bus or a CAN FD bus, two nodes with the farthest connection distance in an independent CAN network or a CAN FD network should be added with a terminal resistor respectively to absorb reflected signals and echoes, improve the anti-interference capability of the bus and improve the communication quality of signals.
Therefore, when there is a connection between the components through the CAN bus or the CAN FD bus, the fuel cell automobile network architecture further includes a termination resistor for absorbing the reflected signal and the echo.
When the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected at least through a CAN bus, a terminal resistor is respectively arranged on two nodes with the farthest connection distance in an independent CAN network formed by elements connected through the CAN bus; when the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected at least through a CAN FD bus, a terminal resistor is respectively arranged on two nodes which are furthest connected in an independent CAN FD network formed by elements connected through the CAN FD bus.
When all electronic devices in the first domain controller and the first device group, between the first domain controller and the vehicle-mounted diagnosis system, between the second domain controller and all electronic devices in the second device group, between the third domain controller and all electronic devices in the third device group or between the fourth domain controller and all electronic devices in the fourth device group are connected through a CAN bus, a terminal resistor is respectively arranged on two nodes with the farthest connection distance in at least one independent CAN network formed by elements connected through the CAN bus; when all electronic devices in the first domain controller and the first device group, between the first domain controller and the vehicle-mounted diagnostic system, between the second domain controller and all electronic devices in the second device group, between the third domain controller and all electronic devices in the third device group or between the fourth domain controller and all electronic devices in the fourth device group are connected through a CAN FD bus, a terminal resistor is respectively arranged on two nodes which are furthest connected in at least one independent CAN FD network formed by elements connected through the CAN FD bus.
The anti-interference function of the Ethernet is completed by the respective chips, so that no termination resistor is arranged on the element.
In fig. 1, the first domain controller, the second domain controller, the third domain controller, and the fourth domain controller together form an independent CAN FD network, the first domain controller and all electronic devices in the first device group together form an independent CAN FD network, the first domain controller and the vehicle-mounted diagnostic system together form an independent CAN FD network, and the second domain controller and all electronic devices in the second device group together form an independent CAN FD network.
In this embodiment, the first device group actually includes a power domain and a fuel cell domain, the second device group actually includes a vehicle body domain and a chassis domain, the first domain controller needs to uniformly manage the operations of the power domain and the fuel cell domain, the second domain controller needs to uniformly manage the operations of the vehicle body domain and the chassis domain, and the first domain controller and the second domain controller have high integration level, high calculation power, rich resources and high cost. Considering that the functions of all the electronic devices of the power domain are more relevant and similar, the functions of all the electronic devices of the fuel cell domain are more relevant and similar, the functions of all the electronic devices of the vehicle body domain are more relevant and similar, and the functions of all the electronic devices of the chassis domain are more relevant and similar, the power domain, the fuel cell domain, the vehicle body domain and the chassis domain can be uniformly managed through one controller, so that the requirements on the integration level, calculation power and resources of a single first domain controller and a single second domain controller can be reduced, and the cost is reduced.
Thus, as shown in fig. 2, the first domain controller of the present embodiment preferably includes a power domain controller and a fuel cell domain controller, and the first device group includes a first device group and a second device group; the second domain controller comprises a vehicle body domain controller and a chassis domain controller, and the second device group comprises a third device group and a fourth device group;
the power domain controller, the fuel cell domain controller, the vehicle body domain controller, the chassis domain controller, the third domain controller and the fourth domain controller are connected through a communication bus;
the power domain controller is used for controlling the operation of all the electronic devices in the first device group and the vehicle-mounted diagnosis system;
the second device group comprises all electronic devices of the fuel cell system, the fuel cell domain controller is connected with all electronic devices in the second device group through a communication bus, and the fuel cell domain controller is used for controlling all electronic devices in the second device group to operate;
the third device group comprises all electronic devices related to vehicle body control, the vehicle body domain controller is connected with all electronic devices in the third device group through a communication bus, and the vehicle body domain controller is used for controlling all electronic devices in the third device group to operate;
the fourth device group comprises all electronic devices related to chassis electric control, the chassis domain controller is connected with all electronic devices in the fourth device group through a communication bus, and the chassis domain controller is used for controlling all electronic devices in the fourth device group to operate.
Here, the first domain controller is divided into a power domain controller and a fuel cell domain controller, the second domain controller is divided into a body domain controller and a chassis domain controller, the first device group is divided into a first device group and a second device group, and the second device group is divided into a third device group and a fourth device group. The first device group comprises a driving motor controller, a power battery controller, a vehicle-mounted charger and the like, the second device group comprises a hydrogen circulating pump controller, a boosting direct current converter, an infrared hydrogen module, a single-chip voltage inspection device and the like, the third device group comprises an air conditioner controller, a tire pressure monitor, PEPS and the like, and the fourth device group comprises ESC, EPS, EPB and the like.
Of course, the power domain controller, the fuel cell domain controller, the vehicle body domain controller, the chassis domain controller, the third domain controller and the fourth domain controller CAN be connected by one or more modes of a CAN bus, a CAN FD bus and an Ethernet; the power domain controller may be connected to all electronic devices in the first device group, the power domain controller may be connected to an on-board diagnostic system, the fuel cell domain controller may be connected to all electronic devices in the second device group, the vehicle body domain controller may be connected to all electronic devices in the third device group, or the chassis domain controller may be connected to all electronic devices in the fourth device group via one of a CAN bus, a CAN FD bus, and an ethernet network.
As shown in fig. 2, the present embodiment provides a preferred bus connection scheme: the power domain controller, the fuel cell domain controller, the vehicle body domain controller, the chassis domain controller, the third domain controller and the fourth domain controller are mutually connected through a CAN bus, and the power domain controller, the fuel cell domain controller, the third domain controller and the fourth domain controller are mutually connected through a CAN FD bus and an Ethernet; all electronic devices in the power domain controller and the first device group, all electronic devices in the power domain controller and the vehicle-mounted diagnostic system, all electronic devices in the fuel cell domain controller and the second device group are connected through a CAN FD bus, all electronic devices in the vehicle body domain controller and the third device group, all electronic devices in the chassis domain controller and the fourth device group are connected through a CAN bus, and all electronic devices in the third domain controller and the third device group, and all electronic devices in the fourth domain controller and the fourth device group are connected through Ethernet. In the bus connection scheme, the cost of the CAN network is lower than that of the CAN FD network, and the communication rate of the CAN network is lower than that of the CAN FD network. Considering that the requirements of partial communication among the power domain controller, the fuel cell domain controller, the third domain controller and the fourth domain controller on the communication rate are high, CAN FD network communication and Ethernet communication are provided in addition to CAN network communication, and high-speed communication CAN be provided; considering that the communication between the vehicle body domain controller, the chassis domain controller and other controllers has low requirements on the communication rate, only CAN network communication is provided, and the cost is saved while the communication requirements are met; the communication between the vehicle body domain controller and all the electronic devices in the third device group and the communication between the chassis domain controller and all the electronic devices in the fourth device group have the minimum requirement on the communication rate, so that CAN network communication is provided; communication between the power domain controller and all electronics within the first device group, between the power domain controller and the on-board diagnostic system, and between the fuel cell domain controller and all electronics within the second device group is less demanding of communication rate, thus providing CAN FD network communication; communication between the third domain controller and all electronic devices within the third device group and between the fourth domain controller and all electronic devices within the fourth device group is demanding on the communication rate, thus providing ethernet communication.
In this embodiment, since the functions of all the electronic devices and the vehicle-mounted diagnostic system in the first device group are more relevant and similar, the operations of all the electronic devices and the vehicle-mounted diagnostic system in the first device group can be managed by the power domain controller; because the functions of all the electronic devices in the second device group are more relevant and similar, the operation of all the electronic devices in the second device group can be uniformly managed by the power battery domain controller; because the functions of all the electronic devices in the third device group are more relevant and similar, the operation of all the electronic devices in the third device group can be uniformly managed by the vehicle body domain controller; because the functions of all the electronic devices in the fourth device group are more relevant and similar, the operation of all the electronic devices in the fourth device group can be uniformly managed by the chassis domain controller; therefore, the fuel cell automobile network architecture only needs six domain controllers, the requirements on the integration level, calculation power and resources of the controllers are reduced, and the cost is saved while the complexity of the network architecture is reduced to a certain extent.
In fig. 2, the power domain controller, the fuel cell domain controller, the vehicle body domain controller, the chassis domain controller, the third domain controller and the fourth domain controller together form an independent CAN network, the power domain controller, the fuel cell domain controller, the third domain controller and the fourth domain controller together form an independent CAN FD network, the power domain controller and all electronic devices in the first device group together form an independent CAN FD network, the power domain controller and the vehicle-mounted diagnostic system together form an independent CAN FD network, the fuel cell domain controller and all electronic devices in the second device group together form an independent CAN FD network, the vehicle body domain controller and all electronic devices in the third device group together form an independent CAN network, and the chassis domain controller and all electronic devices in the fourth device group together form an independent CAN network. In each of the independent CAN network and the CAN FD network, a termination resistor may be respectively disposed on two nodes that are farthest from each other. If in a certain car, the terminal resistor of the power domain is arranged on the power domain controller and the driving motor controller, the terminal resistor of the fuel cell domain is arranged on the fuel cell domain controller and the air compressor controller, the terminal resistor of the car body domain is arranged on the car body domain controller and the air compressor controller, the terminal resistor of the chassis domain is arranged on the chassis domain controller and the ESC, the terminal resistor of the whole car diagnosis network is arranged on the power domain controller and the car diagnosis system, and the terminal resistors of a CAN (controller area network) and a CAN FD (controller formed between the domain controllers are respectively arranged on the power domain controller and the fuel cell domain controller.
The present embodiment also provides a fuel cell automobile including any of the above fuel cell automobile network architectures. In the fuel cell vehicle of the embodiment, the operation of all electronic devices in each device group can be uniformly managed by a single domain controller, so that the network architecture of the fuel cell vehicle only needs four domain controllers, the number of wire harnesses needed between a vehicle-mounted diagnosis system and the electronic device and between the corresponding domain controllers and between the domain controllers is small, the network architecture is greatly simplified, the complexity of the network architecture is reduced, and the network communication efficiency is improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. The fuel cell automobile network architecture is characterized by comprising a first domain controller, a second domain controller, a third domain controller, a fourth domain controller, a first device group, a second device group, a third device group, a fourth device group and an on-vehicle diagnosis system;
the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected through a communication bus;
the first device group comprises all electronic devices related to power and all electronic devices of the fuel cell system, the first domain controller is connected with all electronic devices in the first device group and the first domain controller is connected with the vehicle-mounted diagnosis system through a communication bus, and the first domain controller is used for controlling all electronic devices in the first device group and the vehicle-mounted diagnosis system to operate;
the second device group comprises all electronic devices related to vehicle body control and chassis electric control, the second domain controller is connected with all electronic devices in the second device group through a communication bus, and the second domain controller is used for controlling all electronic devices in the second device group to operate;
the third device group comprises all electronic devices related to automatic driving, the third domain controller is connected with all electronic devices in the third device group through a communication bus, and the third domain controller is used for controlling all electronic devices in the third device group to operate;
the fourth device group comprises all electronic devices related to video entertainment, the fourth domain controller is connected with all electronic devices in the fourth device group through a communication bus, and the fourth domain controller is used for controlling all electronic devices in the fourth device group to operate;
the terminal resistor is used for absorbing the reflected signals and echoes;
when the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected at least through a CAN bus, a terminal resistor is respectively arranged on two nodes with the farthest connection distance in an independent CAN network formed by elements connected through the CAN bus;
or (b)
When the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected at least through a CAN FD bus, a terminal resistor is respectively arranged on two nodes with the farthest connection distance in an independent CAN FD network formed by elements connected through the CAN FD bus;
the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected through one or more modes of a CAN bus, a CAN FD bus and an Ethernet.
2. The fuel cell automotive network architecture of claim 1, wherein between the first domain controller and all of the electronics within the first device group, between the first domain controller and the on-board diagnostic system, between the second domain controller and all of the electronics within the second device group, between the third domain controller and all of the electronics within the third device group, or between the fourth domain controller and all of the electronics within the fourth device group are connected by one of a CAN bus, a CAN FD bus, and an ethernet.
3. The fuel cell automotive network architecture of claim 1, wherein between the first domain controller and all of the electronics within the first device group, between the first domain controller and the on-board diagnostic system, between the second domain controller and all of the electronics within the second device group, between the third domain controller and all of the electronics within the third device group, or between the fourth domain controller and all of the electronics within the fourth device group are connected by a CAN bus or a CAN FD bus.
4. The fuel cell automobile network architecture according to claim 3, wherein when all electronic devices in the first device group, the first domain controller and the on-board diagnostic system, the second domain controller and all electronic devices in the second device group, the third domain controller and all electronic devices in the third device group, or the fourth domain controller and all electronic devices in the fourth device group are connected by a CAN bus, a termination resistor is provided at each of two nodes which are farthest in connection distance in at least one independent CAN network formed by components connected by the CAN bus;
or (b)
When all electronic devices in the first domain controller and the first device group, between the first domain controller and the vehicle-mounted diagnostic system, between the second domain controller and all electronic devices in the second device group, between the third domain controller and all electronic devices in the third device group or between the fourth domain controller and all electronic devices in the fourth device group are connected through a CAN FD bus, a terminal resistor is respectively arranged on two nodes which are furthest connected in at least one independent CAN FD network formed by elements connected through the CAN FD bus.
5. The fuel cell automotive network architecture of claim 1, wherein the first domain controller comprises a power domain controller and a fuel cell domain controller, the first device group comprising a first device group and a second device group; the second domain controller comprises a vehicle body domain controller and a chassis domain controller, and the second device group comprises a third device group and a fourth device group;
the power domain controller, the fuel cell domain controller, the vehicle body domain controller, the chassis domain controller, the third domain controller and the fourth domain controller are connected through a communication bus;
the power domain controller is used for controlling the operation of all the electronic devices in the first device group and the vehicle-mounted diagnosis system;
the second device group comprises all electronic devices of the fuel cell system, the fuel cell domain controller is connected with all electronic devices in the second device group through a communication bus, and the fuel cell domain controller is used for controlling all electronic devices in the second device group to operate;
the third device group comprises all electronic devices related to vehicle body control, the vehicle body domain controller is connected with all electronic devices in the third device group through a communication bus, and the vehicle body domain controller is used for controlling all electronic devices in the third device group to operate;
the fourth device group comprises all electronic devices related to chassis electric control, the chassis domain controller is connected with all electronic devices in the fourth device group through a communication bus, and the chassis domain controller is used for controlling all electronic devices in the fourth device group to operate.
6. The fuel cell vehicle network architecture of claim 5, wherein the power domain controller, the fuel cell domain controller, the body domain controller, the chassis domain controller, the third domain controller, and the fourth domain controller are coupled to each other via a CAN bus, and the power domain controller, the fuel cell domain controller, the third domain controller, and the fourth domain controller are further coupled to each other via a CAN FD bus and an ethernet network.
7. A fuel cell vehicle comprising the fuel cell vehicle network architecture of any one of claims 1-6.
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