CN104118372B - A kind of hybrid electric vehicle CAN network system - Google Patents
A kind of hybrid electric vehicle CAN network system Download PDFInfo
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- CN104118372B CN104118372B CN201310146611.2A CN201310146611A CN104118372B CN 104118372 B CN104118372 B CN 104118372B CN 201310146611 A CN201310146611 A CN 201310146611A CN 104118372 B CN104118372 B CN 104118372B
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Abstract
Go to diagnose each node be connected with automobile CAN by gateway for the diagnostic installation in prior art hybrid electric vehicle CAN network system, gateway designs can be caused complicated and the problem of increase diagnostic process, the invention provides a kind of hybrid electric vehicle CAN network system, comprise vehicle body CAN, power CAN, mixed C AN and diagnosis interface, be that gateway carries out information interaction with car body controller between described vehicle body CAN and power CAN, between described power CAN and mixed C AN with hybrid power ECU electronic control unit for gateway carries out information interaction; The first group node that described vehicle body CAN comprises vehicle body CAN and is connected with vehicle body CAN, the second group node that described power CAN comprises power CAN and is connected with power CAN, the 3rd group node that described mixed C AN comprises mixed C AN bus and is connected with mixed C AN bus; Described diagnosis interface is directly connected with described vehicle body CAN, power CAN and mixed C AN respectively; The complexity of described system simplification gateway designs and diagnostic process.
Description
Technical field
The present invention relates to auto Local Area Network field, particularly relate to a kind of hybrid electric vehicle CAN network system.
Background technology
Along with the fast development of electronic information technology and network technology, automobile has not been the simple fabricate block of mechanical component one by one, and its electronic degree is more and more higher; In order to reduce costs and simplify linear speed and be connected, each automaker adopts various bus control technology one after another, reach the object of data exchange between Vehicle Electronic Control module, CAN is one of topmost bus protocol, due to it, to have transfer rate high, low and the feature such as failure-free error handle and error-detection mechanism of cost, is subject to widespread use in the automotive industry.
Existingly provide a kind of hybrid electric vehicle CAN network system, by traditional power subnet, mixed mover net and demarcation diagnosis subnet three road communication subnet are formed, three road communication subnets are connected with some nodes respectively, traditional power subnet, mixed mover net and demarcation diagnosis subnet carry out information interaction by entire car controller, also namely entire car controller is gateway, wherein diagnostic installation sends diagnosis request signal by demarcating diagnosis subnet to entire car controller, diagnosis request signal is sent to each node by entire car controller, mis-information and failure sequence are fed back to diagnostic installation by entire car controller after receiving diagnosis request signal by each node again, complete Node Diagnostics.But existing diagnostic installation utilizes gateway indirectly to go to diagnose each node be connected with automobile CAN-bus, there is following problem: one, due to gateway itself is a node and again integrated communicaton module as gateway, comparatively complicated, if recycling gateway can cause gateway designs complicated as the repeater of diagnostic signal; Two, because needs gateway forwards diagnostic signal can increase diagnostic process.
Summary of the invention
For the diagnostic installation solved in prior art hybrid electric vehicle CAN network system utilizes gateway indirectly to go to diagnose each node be connected with automobile CAN-bus, gateway designs finally can be caused complicated and the problem of increase diagnostic process.
On the one hand, embodiments provide a kind of hybrid electric vehicle CAN network system, comprise vehicle body CAN, power CAN, mixed C AN and diagnosis interface,
Be that gateway carries out information interaction with car body controller between described vehicle body CAN and power CAN, between described power CAN and mixed C AN with hybrid power ECU electronic control unit for gateway carries out information interaction;
The first group node that described vehicle body CAN comprises vehicle body CAN and is connected with described vehicle body CAN, the second group node that described power CAN comprises power CAN and is connected with described power CAN, the 3rd group node that described mixed C AN comprises mixed C AN bus and is connected with described mixed C AN bus;
Described diagnosis interface is connected with the bus of described vehicle body CAN, power CAN and mixed C AN respectively.
In hybrid electric vehicle CAN network system of the present invention, diagnosis interface is connected with vehicle body CAN, power CAN and mixed C AN bus, when needing to diagnose the node on respective CAN, diagnostic installation directly carries out trouble diagnosing by the diagnosis interface pair each node be connected with CAN, so each node is directly diagnosed relatively existing by the indirect diagnosis node of gateway, do not need through with utilize gateway, and then minimizing diagnostic process, and reduce the design complexities of gateway; Hybrid electric vehicle CAN network system disclosed by the invention adopts three CAN in addition, relative to two CAN of prior art, the node that every bar CAN connects is less, and then the load reduction in wall scroll CAN, adds the service life of CAN.
Further, in hybrid electric vehicle CAN network system of the present invention, described vehicle body CAN is the CAN with the first speed of transmission, and described vehicle body CAN transmits the message that hazard level is the tertiary gradient;
Described power CAN is the CAN with the second speed of transmission, and described power CAN transmits the message that hazard level is the second grade;
Described mixed C AN bus is the CAN with the 3rd speed of transmission, and described mixed C AN bus transmits the message that hazard level is the first estate;
Wherein, described first speed of transmission is less than described second speed of transmission, and described second speed of transmission is less than or equal to described 3rd speed of transmission; The described tertiary gradient is less than described second grade, and described second grade is less than described the first estate.
Further, in hybrid electric vehicle CAN network system of the present invention, in described vehicle body CAN, the message amount of same time tranfer meets first threshold; In described power CAN, the message amount of same time tranfer meets Second Threshold; In described mixed C AN bus, the message amount of same time tranfer meets the 3rd threshold value;
Wherein, described first threshold is greater than described Second Threshold, and described Second Threshold is less than or equal to described 3rd threshold value.
Further, in hybrid electric vehicle CAN network system of the present invention, described car body controller comprises packaged unit, and described packaged unit sends after being packed by the message received from vehicle body CAN and/or power CAN;
Described hybrid power ECU electronic control unit comprises control algorithm unit, and described control algorithm unit is for sending after the predetermined message access control algorithm process received from vehicle body power CAN and/or mixed C AN bus.
Further, in hybrid electric vehicle CAN network system of the present invention, the first matching component is provided with between each node of described first group node and described vehicle body CAN, described first matching component comprises the first damping element and the second damping element, described first damping element is connected between each node of described first group node and vehicle body CAN_H bus, and described second damping element is connected between each node of described first group node and vehicle body CAN_L bus;
In described second group node, two nodes of physical location spaced furthest are provided with the second matching component respectively and between described power CAN, described second matching component comprises the 4th damping element, the 5th damping element and the first charge storage cell, be connected between power CAN_H bus and power CAN_L bus after wherein said 4th damping element and described 5th damping element series connection, described first charge storage cell one end is connected between described 4th damping element and described 5th damping element, other end ground connection;
The second matching component is provided with between two nodes of physical location spaced furthest and described mixed C AN bus in described 3rd group node, described second matching component comprises the 4th damping element, the 5th damping element and the first charge storage cell, be connected between mixed C AN_H bus and mixed C AN_L bus after wherein said 4th damping element and described 5th damping element series connection, described first charge storage cell one end is connected between described 4th damping element and described 5th damping element, other end ground connection.
Further, in hybrid electric vehicle CAN network system of the present invention, between each node of described 3rd group node and mixed C AN bus, be provided with protective circuit;
Described protective circuit comprises light-coupled isolation element, the 3rd damping element and the second charge storage cell; between each node that described light-coupled isolation element is connected to described 3rd group node and described mixed C AN bus, be connected between mixed C AN mask bus and ground after described 3rd damping element and described second charge storage cell serial connection.
Further, in hybrid electric vehicle CAN network system of the present invention, described vehicle body CAN adopts fault-tolerant CAN, and described power CAN and mixed C AN bus adopt high-speed CAN bus.
Further, in hybrid electric vehicle CAN network system of the present invention, described first group node comprises instrumentation module, Reverse Sensor module, Climate Control Module, car body controller, sound box module and seat memory module;
Described second group node comprises engine electronic control system module, car body controller, change speed gear box ECU electronic control unit, brake electronic control module, tractive force ECU electronic control unit, servo-steering module, air bag module, hybrid power ECU electronic control unit and tire pressure module;
Described 3rd group node comprises hybrid power ECU electronic control unit, front motor ECU electronic control unit, rear motor ECU electronic control unit, battery management module, power transfer module and charging module.
Further, in hybrid electric vehicle CAN network system of the present invention, described diagnosis interface is the diagnosis interface meeting general international standard.
Accompanying drawing explanation
Fig. 1 is the hybrid electric vehicle CAN network system schematic diagram that the embodiment of the present invention provides;
Fig. 2 is the connection diagram of the first matching component and the first group node and vehicle body CAN in the hybrid electric vehicle CAN network system that provides of the embodiment of the present invention;
Fig. 3 is the connection diagram of the second matching component and the second group node and power CAN in the hybrid electric vehicle CAN network system that provides of the embodiment of the present invention;
Fig. 4 is the connection diagram of protective circuit and the 3rd group node and mixed C AN bus in the hybrid electric vehicle CAN network system that provides of the embodiment of the present invention.
Wherein, 1, vehicle body CAN; 2, power CAN; 3, mixed C AN bus; 4, diagnosis interface; 5, the first group node; 51, instrumentation module; 52, Reverse Sensor module; 53, Climate Control Module; 54, sound box module; 55, seat memory module; 6, the second group node; 61, tractive force ECU electronic control unit; 62, brake electronic control module; 63, change speed gear box ECU electronic control unit; 64, engine electronic control system module; 7, the 3rd group node; 71, power transfer module; 72, motor electronic control module; 73, battery management module; 74, charging module; 8, control part; 9, light-coupled isolation element; 10, car body controller; 11, hybrid power ECU electronic control unit.
Detailed description of the invention
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In the present invention, the English full name of abbreviation " CAN " is " ControllerAreaNetwork ", and the Chinese meaning is " controller local area network "; The English full name of abbreviation " BCAN " is " BodyControllerAreaNetwork ", and the Chinese meaning is " car body controller local area network "; The English full name of abbreviation " PCAN " is " PowerControllerAreaNetwork ", and the Chinese meaning is " power controller local area network "; The English full name of abbreviation " HCAN " is " HybridControllerAreaNetwork ", and the Chinese meaning is " mixture control local area network "; The English full name of abbreviation " CAN_H " is " ControllerAreaNetwork_High ", and the Chinese meaning is " high-order controller local area network "; The English full name of abbreviation " CAN_L " is " ControllerAreaNetwork_Low ", and the Chinese meaning is " low level controller local area network "; The Chinese meaning of unit " Kb/s " is " 1 kilobytes is per second "; The Chinese meaning of its Chinese and English " Shield " is " shielding wire "; The English full name of abbreviation " UDS " is " Unifieddiagnosticservices ", and the Chinese meaning is " unified diagnosis service "; The English full name of abbreviation " SAE " is " SocietyofAutomotiveEngineers ", and the Chinese meaning is " automotive engineer association of the U.S. "
Hybrid electric vehicle CAN network system of the present invention is mainly used in realizing the transmission of the message that each node provides on hybrid vehicle and mutual, and then realizes the intelligent management to each node; Wherein gateway is for being undertaken the message that different CAN is transmitted changing to realize heterogeneous networks interconnection; Described CAN comprises CAN_H bus, CAN_L bus and CAN_Shield bus, and the message needed for the node be wherein connected with CAN is transmitted by CAN.
By the following examples the present invention is further detailed.
The present embodiment is for illustration of hybrid electric vehicle CAN network system disclosed by the invention, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, described hybrid electric vehicle CAN network system comprises vehicle body CAN, power CAN, mixed C AN and diagnosis interface 4, between described vehicle body CAN and power CAN with car body controller 10 for gateway carries out information interaction, between described power CAN and mixed C AN with hybrid power ECU electronic control unit 11 for gateway carries out information interaction; The first group node 5 that described vehicle body CAN comprises vehicle body CAN 1 and is connected with vehicle body CAN 1, the second group node 6 that described power CAN comprises power CAN 2 and is connected with power CAN 2, the 3rd group node 7 that described mixed C AN comprises mixed C AN bus 3 and is connected with mixed C AN bus 3; Described diagnosis interface 4 is connected with described vehicle body CAN 1, power CAN 2 and mixed C AN bus 3 respectively.
Diagnosis interface 4 is connected with vehicle body CAN 1, power CAN 2 and mixed C AN bus 3, when each node diagnosed by needs, diagnostic installation is directly carried out trouble diagnosing by diagnosis interface 4 to each node be connected with CAN and (is namely directly connected by rigid line between diagnosis interface with each node, there is no centre part), so each node is directly diagnosed relatively existing by the indirect diagnosis node of gateway, do not need through with utilize gateway, reduce diagnostic process, and reduce the design complexities of gateway; Hybrid electric vehicle CAN network system disclosed by the invention adopts three CAN in addition, relative to two CAN of prior art, the node that every bar CAN connects is less, and then the load reduction in wall scroll CAN, adds the service life of CAN.
Further, described diagnosis interface 4, for meeting the diagnosis interface of general international standard, can meet commonality and the extensibility of hardware and software like this.
Further, as a kind of preferred implementation, vehicle body CAN 1 is transmitted the message that hazard level is the tertiary gradient, vehicle body CAN 1 transmit message be the message that the first group node 5 is transferred in vehicle body CAN 1, the first group node 5 its be mainly some for entertainment with comfortable relevant node; Power CAN 2 is transmitted the message that hazard level is the second grade, the message that power CAN 2 is transmitted is the message that the second group node 6 is transferred in power CAN 2, and the second group node 6 is mainly some nodes of being correlated with automobile brake; Mixed C AN bus 3 is transmitted the message that hazard level is the first estate, the message that mixed C AN bus 3 is transmitted is the message that the 3rd group node 7 is transferred in mixed C AN bus 3, and the 3rd group node 7 is mainly the node that some provide vehicle power.The hazard level of message is determined according to message and the vehicle safety degree of association, and the described tertiary gradient is less than described second grade, and described second grade is less than described the first estate; Node is turned to three large classes by the danger of the message carried according to node, and each large class connects different CAN, facilitates network management like this.
Further, as a kind of preferred implementation, described vehicle body CAN 1 is for having the CAN of the first speed of transmission, and described power CAN 2 is for having the CAN of the second speed of transmission, and described mixed C AN bus 3 is for having the CAN of the 3rd speed of transmission; Wherein, owing to being the node that comfortable and amusement etc. is relevant to the first group node 5 that vehicle body CAN 1 connects, therefore less demanding to the speed of transmission of message, can the CAN of selection of small speed of transmission, first speed of transmission described in the present embodiment is 125Kb/s, can certainly do accommodation according to actual conditions; Owing to being the node braked and provide power relevant to second, third group node that power CAN 2 and mixed C AN bus 3 connect, therefore require higher to the speed of transmission of message, second speed of transmission described in the present embodiment is equal with described 3rd speed of transmission, be all 500Kb/s, accommodation can certainly be done according to actual conditions, such as, the 3rd speed of transmission is adjusted to and be a bit larger tham the second speed of transmission.The CAN of carrying the lower node of message hazard level lower with speed of transmission is connected, the CAN of carrying the higher node of message hazard level higher with speed of transmission is connected; So not only realize the stratification management of network, can also ensure that the message that hazard level is higher can be sent in time, avoid because message delay brings traffic accident etc.
Further, the message carried due to the part of nodes on automobile and the vehicle safety degree of association higher, need to transmit in time, in order to prevent because message propagation delay causes safety misadventure, as a kind of preferred implementation, in vehicle body CAN 1 of the present invention, the message amount of same time tranfer need meet first threshold, wherein first threshold is 50 percent of the maximum message segment quantity that vehicle body CAN 1 can be transmitted self, in vehicle body CAN 1, the message amount of same time tranfer is less than or equal to 50 percent of the maximum message segment quantity self can transmitted is that the message amount of same time tranfer in vehicle body CAN 1 meets first threshold.In power CAN 2, the message amount of same time tranfer need meet Second Threshold, wherein Second Threshold is 30 percent of the maximum message segment quantity that power CAN 2 can be transmitted self, and in power CAN 2, the message amount of same time tranfer is less than or equal to 30 percent of the maximum message segment quantity self can transmitted is that the message amount of same time tranfer in power CAN 2 meets Second Threshold.In mixed C AN bus 3, the message amount of same time tranfer need meet the 3rd threshold value, wherein the 3rd threshold value be the maximum message segment quantity that mixed C AN bus 3 can be transmitted self 30, mixed C AN percent bus 3 on the message amount of same time tranfer to be less than or equal to 30 percent of the maximum message segment quantity self can transmitted be that the message amount of same time tranfer in mixed C AN bus 3 meets the 3rd threshold value.First threshold, Second Threshold and the 3rd threshold value can do adaptive adjustment in addition.
By the restriction to time tranfer message amount same in every bar CAN, can not postpone because of the excessive message transmissions that causes of same time tranfer message amount when ensureing that message transmits in CAN, and then avoid because same time tranfer message amount cause causes automobile safety accident.
Further, as a kind of preferred implementation, described car body controller 10 comprises packaged unit (not with illustrating), and described packaged unit is used for sending after the message received from vehicle body CAN 1 and/or power CAN 2 packing; Such as when car body controller 10 receives a parking brake signal from power CAN 2, car body controller 10 is directly packaged into a frame message this signal and is sent in power CAN 2 together with other signal that will forward, car body controller 10 is only simply packed transmission, can simplify the complexity of this car body controller 10.Wherein car body controller 10 itself is also the node on vehicle body CAN and power CAN, and namely car body controller 10 belongs to the first group node 5 and the second group node 6 simultaneously.
Described hybrid power ECU electronic control unit 11 comprises control algorithm unit (not with illustrating), and described control algorithm unit is used for sending after receiving predetermined message access control algorithm process from vehicle body power CAN 2 and/or mixed C AN bus 3.Such as, hybrid power ECU electronic control unit 11 receives after battery charge state signal from mixed C AN bus 3, by this signal access control algorithm, non-linear shift process can be carried out to this signal and show that the packing of corresponding battery charge state signal is sent in power CAN 2, usually because the electricity of battery can not real arrival 0%, will be very large to battery injury if discharge into 0%, when the electricity of battery remains to a certain extent as 10%, automobile just can not re-use battery, but need battery charge state signal to show in instrument, if but the electricity of instrument display battery also remains 10%, chaufeur can think battery also have electricity and vehicle cannot to travel be that other reason causes, therefore the electricity of battery 10% can carry out exporting after non-linear shift process obtains 0% by hybrid power ECU electronic control unit 11 again, chaufeur wrong understanding can be avoided like this, the relevant control algorithm added in hybrid power ECU electronic control unit 11 can also carry out otherwise processed, such as linear deflection etc., in addition related algorithm is joined in hybrid power ECU electronic control unit 11, in other each node, just need not add related algorithm again, the design relative simplicity of each node of such automobile.Predetermined message is that some need to do the message of algorithm process.Wherein hybrid power ECU electronic control unit 11 itself is also the node on power CAN and mixed C AN, and namely hybrid power ECU electronic control unit 11 belongs to the second group node 6 and the 3rd group node 7 simultaneously.
Described first group node 5 comprises instrumentation module 51, Reverse Sensor module 52, Climate Control Module 53, sound box module 54 and seat memory module 55; Described second group node 6 comprises engine electronic control system module 64, change speed gear box ECU electronic control unit 63, brake electronic control module 62, tractive force ECU electronic control unit 61, servo-steering module (not shown), air bag module (not shown) and tire pressure module (not shown); Described 3rd group node 7 comprises motor electronic control module 72, battery management module 73, power transfer module 71 and charging module 74; Motor electronic control module 72 comprises front motor ECU electronic control unit and rear motor ECU electronic control unit.
Further, in order to ensure normal operation and the stability of each CAN, as shown in Figure 2, as a kind of preferred implementation, the first matching component is provided with between vehicle body CAN 1 of the present invention and each node of the first group node 5, described first matching component comprises the first damping element R1 and the second damping element R2, between each node that described first damping element R1 is connected to described first group node 5 and vehicle body CAN_H bus, between each node that described second damping element R2 is connected to described first group node 5 and vehicle body CAN_L bus.Wherein the value of the first damping element R1 and the second damping element R2 is equal, be about 500 ohm, all first matching component sizes in vehicle body CAN 1 are relevant to the bus length, network transmission speed, network cable characteristic, network cable Connector Clip, gateway transceiver characteristics etc. of network, generally about 120 ohms; The selection of the size of the first matching component of each node of the first group node 5 adopts the simple fast calculation method just omited: after namely the first group node 5 is connected into network, and make the damping element value of matching component in whole vehicle body CAN be not less than 100 ohm, be approximately 120 ohm.The Electromagnetic Compatibility of network can be improved like this; Be four as vehicle body CAN being connected with the first group node 5, adopt said method, the size calculating each damping element that can just omit is about 500 ohm, and final practical application value also will consider the impact of electromagnetic compatibility.
Further, as a kind of preferred implementation, as shown in Figure 3, in second group node 6, two nodes of physical location spaced furthest are all provided with the second matching component respectively and between power CAN 2, described second matching component comprises the 4th damping element R4, the 5th damping element R5 and the first charge storage cell C1, wherein the 4th damping element R4 and described 5th damping element R5 is connected between CAN_H bus and CAN_L bus after connecting, first charge storage cell C1 one end is connected between the 4th damping element R4 and the 5th damping element R5, other end ground connection.
The second matching component is all provided with between two nodes of physical location spaced furthest and mixed C AN bus 3 in 3rd group node 7, described second matching component comprises the 4th damping element R4, the 5th damping element R5 and the first charge storage cell C1, wherein the 4th damping element R4 and described 5th damping element R5 is connected between CAN_H bus and CAN_L bus after connecting, first charge storage cell C1 one end is connected between the 4th damping element R4 and the 5th damping element R5, other end ground connection.
Further, as a kind of preferred implementation, as shown in Figure 4, protective circuit is provided with between each node of the 3rd group node 7 and mixed C AN bus 3; Described protective circuit comprises light-coupled isolation element 9, the 3rd damping element R3 and the second charge storage cell C2; between each node that described light-coupled isolation element 9 is connected to described 3rd group node 7 and described mixed C AN bus 3, described damping element R3 and the second charge storage cell C2 is connected between mixed C ANShield bus and ground after being connected in series.Wherein light-coupled isolation element 9 is specifically connected with the CAN_H bus of mixed C AN bus 3 and CAN_L bus, and be connected with the control part 8 of each node of the 3rd group node 7, when first changing through light-coupled isolation element 9 after the data output that control part 8 processes, data after conversion form message transmissions in mixed C AN bus 3, extraneous interference utilizes the 3rd damping element R3 and the second charge storage cell C2 to be connected in series the metre filter formed, and the message stability finally obtained is better.Wherein the 3rd damping element R3 is 1 ohm, and the second charge storage cell C2 is 0.68 microfarad, and the value of certain 3rd damping element R3 and the second charge storage cell C2 can do accommodation with reference to SAE standard.
As a kind of preferred implementation, in the present invention, vehicle body CAN 1 is sampled fault-tolerant CAN, power CAN 2 and mixed C AN bus 3 adopt high-speed CAN bus, fault-tolerant CAN is compared with common low speed CAN, have the fault-tolerant transceive communications function of Physical layer, high-speed CAN bus has better real-time.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1. a hybrid electric vehicle CAN network system, is characterized in that, comprises vehicle body CAN, power CAN, mixed C AN and diagnosis interface,
Be that gateway carries out information interaction with car body controller between described vehicle body CAN and power CAN, between described power CAN and mixed C AN with hybrid power ECU electronic control unit for gateway carries out information interaction;
The first group node that described vehicle body CAN comprises vehicle body CAN and is connected with described vehicle body CAN, the second group node that described power CAN comprises power CAN and is connected with described power CAN, the 3rd group node that described mixed C AN comprises mixed C AN bus and is connected with described mixed C AN bus;
Described diagnosis interface is connected with described vehicle body CAN, power CAN and mixed C AN bus respectively.
2. hybrid electric vehicle CAN network system according to claim 1, is characterized in that, described vehicle body CAN is the CAN with the first speed of transmission, and described vehicle body CAN transmits the message that hazard level is the tertiary gradient;
Described power CAN is the CAN with the second speed of transmission, and described power CAN transmits the message that hazard level is the second grade;
Described mixed C AN bus is the CAN with the 3rd speed of transmission, and described mixed C AN bus transmits the message that hazard level is the first estate;
Wherein, described first speed of transmission is less than described second speed of transmission, and described second speed of transmission is less than or equal to described 3rd speed of transmission; The described tertiary gradient is less than described second grade, and described second grade is less than described the first estate.
3. hybrid electric vehicle CAN network system according to claim 1 and 2, is characterized in that, in described vehicle body CAN, the message amount of same time tranfer meets first threshold; In described power CAN, the message amount of same time tranfer meets Second Threshold; In described mixed C AN bus, the message amount of same time tranfer meets the 3rd threshold value;
Wherein, described first threshold is greater than described Second Threshold, and described Second Threshold is less than or equal to described 3rd threshold value.
4. hybrid electric vehicle CAN network system according to claim 1 and 2, is characterized in that, described car body controller comprises packaged unit, and described packaged unit sends after being packed by the message received from vehicle body CAN and/or power CAN;
Described hybrid power ECU electronic control unit comprises control algorithm unit, and described control algorithm unit is for sending after the predetermined message access control algorithm process received from vehicle body power CAN and/or mixed C AN bus.
5. hybrid electric vehicle CAN network system according to claim 1 and 2, it is characterized in that, the first matching component is provided with between each node of described first group node and described vehicle body CAN, described first matching component comprises the first damping element and the second damping element, described first damping element is connected between each node of described first group node and vehicle body CAN_H bus, and described second damping element is connected between each node of described first group node and vehicle body CAN_L bus;
In described second group node, two nodes of physical location spaced furthest are provided with the second matching component respectively and between described power CAN, described second matching component comprises the 4th damping element, the 5th damping element and the first charge storage cell, be connected between power CAN_H bus and power CAN_L bus after wherein said 4th damping element and described 5th damping element series connection, described first charge storage cell one end is connected between described 4th damping element and described 5th damping element, other end ground connection;
In described 3rd group node, two nodes of physical location spaced furthest are provided with the second matching component respectively and between described mixed C AN bus, described second matching component comprises the 4th damping element, the 5th damping element and the first charge storage cell, be connected between mixed C AN_H bus and mixed C AN_L bus after wherein said 4th damping element and described 5th damping element series connection, described first charge storage cell one end is connected between described 4th damping element and described 5th damping element, other end ground connection.
6. hybrid electric vehicle CAN network system according to claim 1 and 2, is characterized in that, is provided with protective circuit between each node of described 3rd group node and mixed C AN bus;
Described protective circuit comprises light-coupled isolation element, the 3rd damping element and the second charge storage cell; between each node that described light-coupled isolation element is connected to described 3rd group node and described mixed C AN bus, be connected between mixed C AN mask bus and ground after described 3rd damping element and described second charge storage cell serial connection.
7. hybrid electric vehicle CAN network system according to claim 1 and 2, is characterized in that, described vehicle body CAN adopts fault-tolerant CAN, and described power CAN and mixed C AN bus adopt high-speed CAN bus.
8. hybrid electric vehicle CAN network system according to claim 1, is characterized in that, described first group node comprises instrumentation module, Reverse Sensor module, Climate Control Module, car body controller, sound box module and seat memory module;
Described second group node comprises engine electronic control system module, car body controller, change speed gear box ECU electronic control unit, brake electronic control module, tractive force ECU electronic control unit, servo-steering module, air bag module, hybrid power ECU electronic control unit and tire pressure module;
Described 3rd group node comprises hybrid power ECU electronic control unit, front motor ECU electronic control unit, rear motor ECU electronic control unit, battery management module, power transfer module and charging module.
9. hybrid electric vehicle CAN network system according to claim 1, is characterized in that, described diagnosis interface is the diagnosis interface meeting general international standard.
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| CN104724006B (en) * | 2015-01-27 | 2017-10-13 | 湖南南车时代电动汽车股份有限公司 | The dynamical system based on CAN for plug-in hybrid passenger car |
| CN105150956B (en) * | 2015-07-20 | 2017-08-25 | 中通客车控股股份有限公司 | Plug-in hybrid passenger car CAN network topological structure in parallel and its control method |
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| CN106713142B (en) * | 2015-11-17 | 2019-12-24 | 陕西重型汽车有限公司 | Method for transmitting IP message on CAN bus and IP local area network constructed by CAN bus network |
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