CN114454830A - 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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- CN114454830A CN114454830A CN202210057494.1A CN202210057494A CN114454830A CN 114454830 A CN114454830 A CN 114454830A CN 202210057494 A CN202210057494 A CN 202210057494A CN 114454830 A CN114454830 A CN 114454830A
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- 239000000446 fuel Substances 0.000 title claims abstract description 90
- 238000003745 diagnosis Methods 0.000 claims abstract description 35
- 238000002592 echocardiography Methods 0.000 claims 2
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000005984 hydrogenation reaction Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
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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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- Electric Propulsion And Braking For Vehicles (AREA)
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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 wiring harness quantity between a vehicle-mounted diagnosis system and the electronic devices and 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.
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
Along with the improvement of the electronization degree of the fuel cell automobile, the controllers on the fuel cell automobile are more and more, and the electronic devices on the automobile need to be communicated with the controllers, and the controllers need 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 wiring harness amount 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 a vehicle-mounted 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 communication buses, 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 the electronic devices in the second device group through a communication bus, and the second domain controller is used for controlling all the 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 the electronic devices in the third device group through a communication bus, and the third domain controller is used for controlling all the electronic devices in the third device group to operate;
the fourth device group comprises all electronic devices related to audio-visual entertainment, the fourth domain controller is connected with all the electronic devices in the fourth device group through a communication bus, and the fourth domain controller is used for controlling all the electronic devices in the fourth device group to operate.
Preferably, the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected by one or more of a CAN bus, a CAN FD bus and an ethernet.
Preferably, 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 or a CAN FD bus.
Preferably, the fuel cell automobile network architecture further comprises a terminal 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 the CAN bus, two nodes with the farthest connection distance are respectively provided with a terminal resistor in an independent CAN network formed by elements connected through the CAN bus;
or
When the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected at least through the CAN FD bus, two nodes which are farthest from each other in connection are respectively provided with a terminal resistor in an independent CAN FD network formed by elements connected through the CAN FD bus.
Preferably, the connection between the first domain controller and all electronic devices in 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 is performed through one 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 vehicle-mounted 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 a CAN bus or a CAN FD bus.
Preferably, the fuel cell automobile network architecture further comprises a terminal resistor for absorbing the reflected signal and the echo;
when a first domain controller is connected with all electronic devices in a first device group, a first domain controller is connected with a vehicle-mounted diagnosis system, a second domain controller is connected with all electronic devices in a second device group, a third domain controller is connected with all electronic devices in a third device group or a fourth domain controller is connected with all electronic devices in a fourth device group through a CAN bus, two nodes which are farthest from the connection are respectively provided with a terminal resistor in at least one independent CAN network formed by elements connected through the CAN bus;
or
When the first domain controller is connected with all electronic devices in the first device group, the first domain controller is connected with the vehicle-mounted diagnosis system, the second domain controller is connected with all electronic devices in the second device group, the third domain controller is connected with all electronic devices in the third device group or the fourth domain controller is connected with all electronic devices in the fourth device group through the CAN FD buses, two nodes which are farthest away from each other in connection are respectively provided with a terminal resistor in at least one independent CAN FD network formed by the elements connected through the CAN FD buses.
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 first device group comprises all electronic devices related to power, the power domain controller is connected with all the electronic devices in the first device group and the vehicle-mounted diagnosis system through a communication bus, and the power domain controller is used for controlling all the electronic devices in the first device group and the vehicle-mounted diagnosis system to operate;
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 the electronic devices in the third device group through a communication bus, and the vehicle body domain controller is used for controlling all the 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.
One or more technical schemes provided by the invention at least have 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 wiring harness quantity between the vehicle-mounted diagnosis system and the electronic devices and 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.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic diagram of a network architecture of a fuel cell vehicle according to an embodiment of the present invention;
fig. 2 is another schematic diagram of a network architecture of a fuel cell vehicle according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a fuel cell automobile network architecture and a fuel cell automobile, and solves the technical problems of large wiring harness amount and complex structure of the fuel cell automobile network architecture in the prior art.
In order to better understand the technical scheme of the invention, the technical scheme of the invention is described in detail in the following with the accompanying drawings and specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
As shown in fig. 1, the network architecture of the fuel cell vehicle 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 communication buses, 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 the electronic devices in the second device group through a communication bus, and the second domain controller is used for controlling all the 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 the electronic devices in the third device group through a communication bus, and the third domain controller is used for controlling all the electronic devices in the third device group to operate;
the fourth device group comprises all electronic devices related to audio-visual entertainment, the fourth domain controller is connected with all the electronic devices in the fourth device group through a communication bus, and the fourth domain controller is used for controlling all the electronic devices in the fourth device group to operate.
In a traditional fuel cell automobile network architecture, all electronic devices in a first device group need to be controlled through a plurality of controllers, all electronic devices in a second device group need to be controlled through a plurality of controllers, all electronic devices in a third device group need to be controlled through a plurality of controllers, and all electronic devices in a fourth device group need to be controlled through a plurality of controllers, so that a plurality of controllers are needed, and the wiring harness quantity needed between the electronic devices and the corresponding controllers and between the controllers is large, so that the wiring harness quantity used by the network architecture is large, and the structure is complex.
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, the dc converter that steps up, infrared hydrogenation module, monolithic voltage patrol and examine ware etc. and the second device group includes air conditioner controller, tire pressure monitor, PEPS, ESC, EPS, EPB etc. and the third device group includes camera, ultrasonic radar, laser radar etc. and the fourth device group includes instrument, well accuse amusement screen, HUD etc.. The hydrogen circulating pump controller, the boosting direct-current converter, the infrared hydrogenation module, the single-chip voltage polling device and the like belong to a fuel cell domain. The air conditioner controller, the tire pressure monitor, the PEPS and the like belong to a vehicle body domain, and the ESC, the EPS, the EPB and the like belong to a chassis domain. Camera, ultrasonic radar, laser radar etc. belong to the autopilot territory, and instrument, well accuse amusement screen, HUD etc. belong to audio-visual amusement territory, therefore the autopilot territory controller also can be called as to the third territory controller, and audio-visual amusement territory controller also can be called as to the fourth controller.
In this embodiment, since the functions of all the electronic devices in the first device group and the vehicle-mounted diagnosis system are related and close, the operations of all the electronic devices in the first device group and the vehicle-mounted diagnosis system can be uniformly managed by the first domain controller; because the functions of all the electronic devices in the second device group are related and close, 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 close, 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 close, 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 wiring harness quantity between the vehicle-mounted diagnosis system and the electronic device and the corresponding domain controller and between the domain controller and the 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.
In this embodiment, the first domain controller, the second domain controller, the third domain controller, and the fourth domain controller may be connected to each other by one or more of a CAN bus, a CAN FD bus, and an ethernet. The connection between the first domain controller and all electronic devices in 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 CAN be realized through one of a CAN bus, a CAN FD bus and an Ethernet.
A preferred bus connection scheme is given here: as shown in fig. 1, a first domain controller, a second domain controller, a third domain controller and a fourth domain controller are connected to each other through a CAN FD bus, and the first domain controller, the third domain controller and the fourth domain controller are also connected to each other through an ethernet; the first domain controller is connected with all electronic devices in the first device group, the first domain controller is connected with the vehicle-mounted diagnosis system, the second domain controller is connected with all electronic devices in the second device group through CAN FD buses, and the third domain controller is connected with all electronic devices in the third device group and the fourth domain controller is connected with all electronic devices in the fourth device group 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 requirement of partial communication among the first domain controller, the third domain controller and the fourth domain controller on the communication rate is high, the Ethernet communication is increased, and high-speed communication can be provided; in consideration of low communication speed requirement of communication between the second domain controller and other controllers, only CAN FD communication is provided, and the cost is saved while the communication requirement is met; the communication between the first domain controller and all electronic devices in the first device group, between the first domain controller and the vehicle-mounted diagnosis system, and between the second domain controller and all electronic devices in the second device group has low requirement on the communication speed, so that CAN FD network communication is provided; communication between the third domain controller and all electronic devices in the third device group and communication between the fourth domain controller and all electronic devices in the fourth device group have high requirements on communication rate, and therefore ethernet communication is provided.
Generally, when there is connection between components through a CAN bus or a CAN FD bus, in an independent CAN network or CAN FD network, two nodes that are farthest from each other should be added with a termination resistor respectively to absorb a reflected signal and an echo, improve the anti-interference capability of the bus, and improve the communication quality of the signal.
Therefore, in this embodiment, when there is a connection between the components through the CAN bus or the CAN FD bus, the network architecture of the fuel cell vehicle 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 the CAN bus, two nodes with the farthest connection distance are respectively provided with a terminal resistor 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 the CAN FD bus, two nodes which are farthest from each other in connection are respectively provided with a terminal resistor in an independent CAN FD network formed by elements connected through the CAN FD bus.
When a first domain controller is connected with all electronic devices in a first device group, a first domain controller is connected with a vehicle-mounted diagnosis system, a second domain controller is connected with all electronic devices in a second device group, a third domain controller is connected with all electronic devices in a third device group or a fourth domain controller is connected with all electronic devices in a fourth device group through a CAN bus, two nodes which are farthest from the connection are respectively provided with a terminal resistor in at least one independent CAN network formed by elements connected through the CAN bus; when the first domain controller is connected with all electronic devices in the first device group, the first domain controller is connected with the vehicle-mounted diagnosis system, the second domain controller is connected with all electronic devices in the second device group, the third domain controller is connected with all electronic devices in the third device group or the fourth domain controller is connected with all electronic devices in the fourth device group through the CAN FD buses, two nodes which are farthest away from each other in connection are respectively provided with a terminal resistor in at least one independent CAN FD network formed by the elements connected through the CAN FD buses.
The anti-interference function of the Ethernet is completed by respective chips, so that no terminal resistor is arranged on the element.
In fig. 1, a first domain controller, a second domain controller, a third domain controller and a 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 manage operations of the power domain and the fuel cell domain in a unified manner, the second domain controller needs to manage operations of the vehicle body domain and the chassis domain in a unified manner, and the first domain controller and the second domain controller are high in integration level, high in computing power, rich in resources, and high in cost. Considering that the functions of all electronic devices in a power domain are more related and similar, the functions of all electronic devices in a fuel cell domain are more related and similar, the functions of all electronic devices in a vehicle body domain are more related and similar, and the functions of all electronic devices in a chassis domain are more related and similar, the power domain, the fuel cell domain, the vehicle body domain and the chassis domain can be considered to be uniformly managed through one controller, so that the requirements on the integration level, the computing power and the resources of a single first domain controller and a single second domain controller can be reduced, and the cost is reduced.
Therefore, as shown in fig. 2, the present embodiment preferably has the first domain controller including a power domain controller and a fuel cell domain controller, and the first device group including 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 first device group comprises all electronic devices related to power, the power domain controller is connected with all the electronic devices in the first device group and the vehicle-mounted diagnosis system through a communication bus, and the power domain controller is used for controlling all the electronic devices in the first device group and the vehicle-mounted diagnosis system to operate;
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 the electronic devices in the third device group through a communication bus, and the vehicle body domain controller is used for controlling all the 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 single first domain controller is divided into a power domain controller and a fuel cell domain controller, the single 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 hydrogenation module, a single-chip voltage polling device and the like, the third device group comprises an air conditioner controller, a tire pressure monitor, a PEPS (passive entry control system) and the like, and the fourth device group comprises an ESC (electronic stability control), an EPS (electric power steering), an EPB (electronic programmable board) 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 through one or more of a CAN bus, a CAN FD bus and an ethernet; the power domain controller and all electronic devices in the first device group, the power domain controller and the vehicle-mounted diagnosis system, the fuel cell domain controller and all electronic devices in the second device group, the vehicle body domain controller and all electronic devices in the third device group or the chassis domain controller and all electronic devices in the fourth device group CAN be connected in one mode of a CAN bus, a CAN FD bus and an Ethernet.
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; the power domain controller is connected with all electronic devices in the first device group, the power domain controller is connected with the vehicle-mounted diagnosis system, the fuel cell domain controller is connected with all electronic devices in the second device group through CAN FD buses, the vehicle body domain controller is connected with all electronic devices in the third device group, the chassis domain controller is connected with all electronic devices in the fourth device group through CAN buses, and the third domain controller is connected with all electronic devices in the third device group, and the fourth domain controller is connected with all electronic devices in the fourth device group 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 speed of the CAN network is lower than that of the CAN FD network. In consideration of high communication rate requirements of part of communication among the power domain controller, the fuel cell domain controller, the third domain controller and the fourth domain controller, CAN FD network communication and Ethernet communication are provided in addition to CAN network communication, and high-speed communication CAN be provided; in consideration of low requirements of communication between the vehicle body area controller, the chassis area controller and other controllers on communication speed, only CAN network communication is provided, and the cost is saved while the communication requirements are met; the communication between the body area controller and all the electronic devices in the third device group and between the chassis area controller and all the electronic devices in the fourth device group has the lowest requirement on the communication speed, so that CAN network communication is provided; communication between the power domain controller and all the electronic devices in the first device group, between the power domain controller and the on-board diagnostic system, and between the fuel cell domain controller and all the electronic devices in the second device group is less demanding on communication rate, thus providing CAN FD network communication; communication between the third domain controller and all electronic devices in the third device group and communication between the fourth domain controller and all electronic devices in the fourth device group have high requirements on communication rate, and therefore ethernet communication is provided.
In this embodiment, since the functions of all the electronic devices and the vehicle-mounted diagnosis system in the first device group are more related and close, the operations of all the electronic devices and the vehicle-mounted diagnosis system in the first device group can be uniformly managed by the power domain controller; as 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; as the functions of all the electronic devices in the third device group are more related and similar, the operation of all the electronic devices in the third device group can be uniformly managed by the vehicle body domain controller; as the functions of all the electronic devices in the fourth device group are more related 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, the computing power and the resources of the controllers are reduced, the complexity of the network architecture is reduced to a certain degree, and the cost is saved.
In fig. 2, a power domain controller, a fuel cell domain controller, a body domain controller, a chassis domain controller, the third domain controller and the fourth domain controller jointly form an independent CAN network, the power domain controller, the fuel cell domain controller, the third domain controller and the fourth domain controller jointly form an independent CAN FD network, the power domain controller and all electronic devices in the first device group jointly form an independent CAN FD network, the power domain controller and the vehicle-mounted diagnostic system jointly form an independent CAN FD network, the fuel cell domain controller and all electronic devices in the second device group jointly form an independent CAN FD network, the vehicle body domain controller and all electronic devices in the third device group jointly form an independent CAN network, and the chassis domain controller and all electronic devices in the fourth device group jointly form an independent CAN network. In each independent CAN network and CAN FD network, a termination resistor may be respectively disposed on two nodes that are farthest from each other. For example, in a certain vehicle, the terminal resistance of the power domain is arranged on a power domain controller and a driving motor controller, the terminal resistance of the fuel cell domain is arranged on a fuel cell domain controller and an air compressor controller, the terminal resistance of the vehicle body domain is arranged on a vehicle body domain controller and an air conditioner controller, the terminal resistance of the chassis domain is arranged on a chassis domain controller and an ESC, the terminal resistance of the vehicle diagnosis network is arranged on the power domain controller and a vehicle diagnosis system, and the terminal resistance of the CAN and CAN FD networks formed between the domain controllers are respectively arranged on the power domain controller and the fuel cell domain controller.
The embodiment also provides a fuel cell automobile, which comprises any one of the fuel cell automobile network architectures. In the fuel cell automobile 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 automobile only needs four domain controllers, the wiring harness quantity between the vehicle-mounted diagnosis system and the electronic devices and 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. Therefore, it is intended that the appended claims be interpreted as including 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 changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A 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-board 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 communication buses, 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 the electronic devices in the second device group through a communication bus, and the second domain controller is used for controlling all the 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 the electronic devices in the third device group through a communication bus, and the third domain controller is used for controlling all the electronic devices in the third device group to operate;
the fourth device group comprises all electronic devices related to audio-visual entertainment, the fourth domain controller is connected with all the electronic devices in the fourth device group through a communication bus, and the fourth domain controller is used for controlling all the electronic devices in the fourth device group to operate.
2. The fuel cell vehicle network architecture of claim 1, wherein the first domain controller, the second domain controller, the third domain controller, and the fourth domain controller are connected via one or more of a CAN bus, a CAN FD bus, and an ethernet.
3. The fuel cell vehicle network architecture of claim 1, wherein the first domain controller, the second domain controller, the third domain controller, and the fourth domain controller are connected via at least a CAN bus or a CAN FD bus.
4. The fuel cell vehicle network architecture of claim 3, further comprising a termination resistor for absorbing 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 the CAN bus, two nodes with the farthest connection distance are respectively provided with a terminal resistor in an independent CAN network formed by elements connected through the CAN bus;
or
When the first domain controller, the second domain controller, the third domain controller and the fourth domain controller are connected at least through the CAN FD bus, two nodes which are farthest from each other in connection are respectively provided with a terminal resistor in an independent CAN FD network formed by elements connected through the CAN FD bus.
5. The fuel cell vehicle network architecture of claim 1, wherein connections between the first domain controller and all electronic devices in the first device group, between the first domain controller and the on-board diagnostics 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 made via one of a CAN bus, a CAN FD bus, and an ethernet.
6. The fuel cell vehicle network architecture of claim 1, wherein connections between the first domain controller and all electronic devices in the first device group, between the first domain controller and the on-board diagnostics 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 made via a CAN bus or CAN FD bus.
7. The fuel cell vehicle network architecture of claim 6, further comprising a termination resistor for absorbing reflected signals and echoes;
when a first domain controller is connected with all electronic devices in a first device group, a first domain controller is connected with a vehicle-mounted diagnosis system, a second domain controller is connected with all electronic devices in a second device group, a third domain controller is connected with all electronic devices in a third device group or a fourth domain controller is connected with all electronic devices in a fourth device group through a CAN bus, two nodes which are farthest from the connection are respectively provided with a terminal resistor in at least one independent CAN network formed by elements connected through the CAN bus;
or
When the first domain controller is connected with all electronic devices in the first device group, the first domain controller is connected with the vehicle-mounted diagnosis system, the second domain controller is connected with all electronic devices in the second device group, the third domain controller is connected with all electronic devices in the third device group or the fourth domain controller is connected with all electronic devices in the fourth device group through the CAN FD buses, two nodes which are farthest away from each other in connection are respectively provided with a terminal resistor in at least one independent CAN FD network formed by the elements connected through the CAN FD buses.
8. The fuel cell vehicle 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 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 first device group comprises all electronic devices related to power, the power domain controller is connected with all the electronic devices in the first device group and the vehicle-mounted diagnosis system through a communication bus, and the power domain controller is used for controlling all the electronic devices in the first device group and the vehicle-mounted diagnosis system to operate;
the second device group comprises all electronic devices of the fuel cell system, the fuel cell domain controller is connected with all the electronic devices in the second device group through a communication bus, and the fuel cell domain controller is used for controlling all the 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 the electronic devices in the third device group through a communication bus, and the vehicle body domain controller is used for controlling all the 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.
9. The fuel cell vehicle network architecture of claim 8, 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 connected 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 connected to each other via a CAN FD bus and an ethernet.
10. A fuel cell vehicle comprising the fuel cell vehicle network architecture of any one of claims 1 to 9.
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