CN203267955U - Hybrid power vehicle CAN system - Google Patents

Abstract

In order to solve the problems that due to the fact that in the prior art, diagnostic equipment of a hybrid power vehicle CAN system diagnoses nodes connected with a vehicle CAN through a gateway, the gateway design is complex, and the diagnosis procedure is increased, the utility model provides a hybrid power vehicle CAN system which comprises a vehicle body CAN, a power CAN, a hybrid CAN and a diagnosis interface. The vehicle body CAN and the power CAN conduct information interaction taking a vehicle body controller as the gateway, the power CAN and the hybrid CAN conduct information interaction taking a hybrid power electronic control module as the gateway, the vehicle body CAN comprises a vehicle body CAN bus and a first set of nodes connected with the vehicle body CAN bus, the power CAN comprises a power CAN bus and a second set of nodes connected with the power CAN bus, and the hybrid CAN comprises a hybrid CAN bus and a third set of nodes connected with the hybrid CAN bus. The diagnosis interface is respectively and directly connected with the vehicle body CAN, the power CAN and the hybrid CAN, and according to the system, and the complexity of the gateway design and the diagnosis procedure are simplified.

Description

A kind of hybrid electric vehicle CAN network system

Technical field

The utility model relates to the auto Local Area Network field, relates in particular 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 to be connected the linear speed connection, the various bus control technologys of the numerous and confused employing of each automaker, reach the purpose of data exchange between the Vehicle Electronic Control module, the CAN bus is one of topmost bus protocol, to have transfer rate high due to it, low and the failure-free mistake of cost is processed and the characteristics such as error-detection mechanism, is subject to widespread use in auto-industry.

having now provides a kind of hybrid electric vehicle CAN network system, by the traditional power subnet, mixed mover net and demarcation diagnosis subnet three road communication subnets consist of, three road communication subnets are connected with some nodes respectively, the traditional power subnet, mixed mover net and demarcation diagnosis subnet carry out information interaction by entire car controller, be also that entire car controller is gateway, wherein diagnostic installation diagnoses subnet to send the diagnosis request signal to entire car controller by demarcation, entire car controller will diagnose request signal to send to each node, each node feeds back to diagnostic installation by entire car controller with mis-information and failure sequence after receiving the diagnosis request signal again, complete Node Diagnostics.But existing diagnostic installation utilizes gateway indirectly to remove to diagnose each node that is connected with automobile CAN-bus, have following problem: one, due to gateway itself be a node and again the integrated communicaton module as gateway, comparatively complicated, if the recycling gateway can cause gateway designs complicated as the repeater of diagnostic signal; Two, because needs gateway forwards diagnostic signal can increase diagnostic process.

The utility model content

For the diagnostic installation that solves in prior art hybrid electric vehicle CAN network system utilizes gateway indirectly to remove to diagnose each node that is connected with automobile CAN-bus, finally can cause the problem of gateway designs complexity and increase diagnostic process.

On the one hand, the utility model embodiment provides a kind of hybrid electric vehicle CAN network system, comprises vehicle body CAN, power CAN, mixed C AN and diagnosis interface,

Carry out information interaction between described vehicle body CAN and power CAN take car body controller as gateway, carry out information interaction between described power CAN and mixed C AN take the hybrid power ECU electronic control unit as gateway;

Described vehicle body CAN comprises vehicle body CAN bus and the first group node that is connected with described vehicle body CAN bus, described power CAN comprises power CAN bus and the second group node that is connected with described power CAN bus, and described mixed C AN comprises mixed C AN bus and the 3rd group node that is connected with described mixed C AN bus;

Described diagnosis interface is connected respectively bus and is connected with mixed C AN with described vehicle body CAN, power CAN.

In the utility model hybrid electric vehicle CAN network system, diagnosis interface is connected with vehicle body CAN bus, power CAN bus and mixed C AN bus, when needs are diagnosed node on CAN separately, diagnostic installation directly carries out trouble diagnosing by diagnosis interface pair each node that is connected with the CAN bus, like this 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 the design complexities of reduction gateway; The disclosed hybrid electric vehicle CAN network system of the utility model adopts three CAN buses in addition, two CAN buses with respect to prior art, the node that connects on every CAN bus is less, and then the load on wall scroll CAN bus reduces, and has increased the service life of CAN bus.

Further, in hybrid electric vehicle CAN network system described in the utility model, be provided with the first matching component between each node of described the first group node and described vehicle body CAN bus, described the first matching component comprises the first damping element and the second damping element, described the first damping element is connected between each node and vehicle body CAN_H bus of described the first group node, and described the second damping element is connected between each node and vehicle body CAN_L bus of described the first group node.

further, in hybrid electric vehicle CAN network system described in the utility model, in described the second group node, two nodes of physical location spaced furthest are provided with the second matching component respectively and between described power CAN bus, described the 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 the 4th damping element and described the 5th damping element series connection, described the first charge storage cell one end is connected between described the 4th damping element and described the 5th damping element, other end ground connection,

Be provided with the second matching component between two nodes of physical location spaced furthest and described mixed C AN bus in described the 3rd group node, described the 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 the 4th damping element and described the 5th damping element series connection, described the first charge storage cell one end is connected between described the 4th damping element and described the 5th damping element, other end ground connection.

Further, in hybrid electric vehicle CAN network system described in the utility model, be provided with protective circuit between each node of described the 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; described light-coupled isolation element is connected between each node and described mixed C AN bus of described the 3rd group node, is connected between mixed C AN mask bus and ground after described the 3rd damping element and described the second charge storage cell serial connection.

Further, in hybrid electric vehicle CAN network system described in the utility model, described vehicle body CAN bus adopts fault-tolerant CAN bus, and described power CAN bus and mixed C AN bus adopt high-speed CAN bus.

Further, in hybrid electric vehicle CAN network system described in the utility model, described car body controller comprises packaged unit, sends after the message packing that described packaged unit is used for receiving from vehicle body CAN bus and/or power CAN bus;

Described hybrid power ECU electronic control unit comprises the control algorithm unit, sends after the predetermined message access control algorithm process that described control algorithm unit is used for receiving from vehicle body power CAN bus and/or mixed C AN bus.

Further, in hybrid electric vehicle CAN network system described in the utility model, described diagnosis interface is the diagnosis interface that meets general international standard.

Further, in hybrid electric vehicle CAN network system described in the utility model, described the first group node comprises instrument module, Reverse Sensor module, Climate Control Module, car body controller, sound box module and seat memory module;

Described the second group node comprises engine electronic control system module, car body controller, change speed gear box ECU electronic control unit, braking ECU electronic control unit, tractive force ECU electronic control unit, servo-steering module, air bag module, hybrid power ECU electronic control unit and tire pressure module;

Described the 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.

Description of drawings

Fig. 1 is the hybrid electric vehicle CAN network system schematic diagram that the utility model embodiment provides;

Fig. 2 is the connection diagram of the first matching component and the first group node and vehicle body CAN bus in the hybrid electric vehicle CAN network system that provides of the utility model embodiment;

Fig. 3 is the connection diagram of the second matching component and the second group node and power CAN bus in the hybrid electric vehicle CAN network system that provides of the utility model embodiment;

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 utility model embodiment.

Wherein, 1, vehicle body CAN bus; 2, power CAN bus; 3, mixed C AN bus; 4, diagnosis interface; 5, the first group node; 51, instrument 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, braking ECU electronic control unit; 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.

The specific embodiment

Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.

In the utility model, the English full name of abbreviation " CAN " is " Controller Area Network ", and the Chinese meaning is " controller local area network "; The English full name of abbreviation " BCAN " is " Body Controller Area Network ", and the Chinese meaning is " car body controller local area network "; The English full name of abbreviation " PCAN " is " Power Controller Area Network ", and the Chinese meaning is " power controller local area network "; The English full name of abbreviation " HCAN " is " Hybrid Controller Area Network ", and the Chinese meaning is " mixture control local area network "; The English full name of abbreviation " CAN_H " is " Controller Area Network_High ", and the Chinese meaning is " high-order controller local area network "; The English full name of abbreviation " CAN_L " is " Controller Area Network_Low ", and the Chinese meaning is " low level controller local area network "; The Chinese meaning of unit " Kb/s " is " 1 kilobytes per second "; The Chinese meaning of its Chinese and English " Shield " is " shielding wire "; The English full name of abbreviation " UDS " is " Unified diagnostic services ", and the Chinese meaning is " unified diagnosis service "; The English full name of abbreviation " SAE " is " Society of Automotive Engineers ", and the Chinese meaning is " U.S. automotive engineer association "

The transmission of the message that hybrid electric vehicle CAN network system described in the utility model is mainly used in realizing that on hybrid vehicle, each node provides and mutual, and then realize intelligent management to each node; Wherein gateway is used for the message conversion of transmitting on different CAN buses is realized the heterogeneous networks interconnection; Described CAN bus comprises CAN_H bus, CAN_L bus and CAN_Shield bus, and the required message of the node that wherein is connected with the CAN bus transmits by the CAN bus.

By the following examples the utility model is further detailed.

The present embodiment is used for the disclosed hybrid electric vehicle CAN network system of explanation the utility model, 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, carry out information interaction between described vehicle body CAN and power CAN take car body controller 10 as gateway, carry out information interaction between described power CAN and mixed C AN take hybrid power ECU electronic control unit 11 as gateway; Described vehicle body CAN comprises vehicle body CAN bus 1 and the first group node 5 that is connected with vehicle body CAN bus 1, described power CAN comprises power CAN bus 2 and the second group node 6 that is connected with power CAN bus 2, and described mixed C AN comprises mixed C AN bus 3 and the 3rd group node 7 that is connected with mixed C AN bus 3; Described diagnosis interface 4 is connected with mixed C AN bus with described vehicle body CAN bus 1, power CAN bus 2 respectively and is connected.

Diagnosis interface 4 is connected with mixed C AN bus with vehicle body CAN bus 1, power CAN bus 2 and is connected, when needs are diagnosed each node, diagnostic installation directly by 4 pairs of each nodes that are connected with the CAN bus of diagnosis interface carry out trouble diagnosing (be diagnosis interface with each node between directly be connected by rigid line, there is no centre part), like this 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; The disclosed hybrid electric vehicle CAN network system of the utility model adopts three CAN buses in addition, two CAN buses with respect to prior art, the node that connects on every CAN bus is less, and then the load on wall scroll CAN bus reduces, and has increased the service life of CAN bus.

Further, described diagnosis interface 4 can satisfy commonality and the extensibility of hardware and software like this for meeting the diagnosis interface of general international standard.

Wherein, on vehicle body CAN bus 1, the transmission hazard level is the message of the tertiary gradient, and the message of vehicle body CAN bus 1 transmission is that the first group node 5 is transferred to the message on vehicle body CAN bus 1, the first group node 5 its be mainly some for entertainment with comfortable relevant node; On power CAN bus 2, the transmission hazard level is the message of the second grade, and the message of power CAN bus 2 transmission is that the second group node 6 is transferred to the message on power CAN bus 2, and the second group node 6 is mainly some with the relevant node of automobile brake; On mixed C AN bus 3, the transmission hazard level is the message of the first estate, and the message of mixed C AN bus 3 transmission is that the 3rd group node 7 is transferred to the message on 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 definite according to message and the vehicle safety degree of association, and the described tertiary gradient is less than described the second grade, and described the second grade is less than described the first estate; The danger of the message that carries according to node turns to three large classes with node, and each large class connects different CAN buses, facilitates like this network management.

Wherein, described vehicle body CAN bus 1 is for having the CAN bus of the first speed of transmission, and described power CAN bus 2 is for having the CAN bus of the second speed of transmission, and described mixed C AN bus 3 is for having the CAN bus of the 3rd speed of transmission; Wherein, owing to be the relevant node such as comfortable and amusement to the first group node 5 that vehicle body CAN bus 1 connects, therefore less demanding to the speed of transmission of message, CAN bus that can the selection of small speed of transmission, described the first speed of transmission of the present embodiment is 125Kb/s, can certainly do accommodation according to actual conditions; Owing to being connected second, third group node of connecting with mixed C AN bus to power CAN bus 2 for braking and providing power relevant node, therefore the speed of transmission of message is had relatively high expectations, described the second speed of transmission of the present embodiment and described the 3rd speed of transmission equate, be all 500Kb/s, can certainly do accommodation according to actual conditions, for example the 3rd speed of transmission is adjusted into and be a bit larger tham the second speed of transmission.Be connected carrying the lower CAN bus of the lower node of message hazard level and speed of transmission, be connected carrying the higher CAN bus of the higher node of message hazard level and speed of transmission; So not only realize the stratification management of network, can also guarantee that the higher message of hazard level can in time send to, avoid bringing traffic accident etc. because of message delay.

Wherein, on the utility model vehicle body CAN bus 1, the message amount of same time tranfer need meet first threshold, wherein first threshold is 50 percent of the maximum message segment quantity that self can transmit of vehicle body CAN bus 1, and 50 percent message amount for same time tranfer on vehicle body CAN bus 1 that on vehicle body CAN bus 1, the message amount of same time tranfer is less than or equal to the maximum message segment quantity that self can transmit meets first threshold.On power CAN bus 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 self can transmit of power CAN bus 2, and 30 percent message amount for same time tranfer on power CAN bus 2 that on power CAN bus 2, the message amount of same time tranfer is less than or equal to the maximum message segment quantity that self can transmit meets Second Threshold.On mixed C AN bus 3, the message amount of same time tranfer need meet the 3rd threshold value, wherein the 3rd threshold value is 30 percent of the maximum message segment quantity that self can transmit of mixed C AN bus 3, and 30 percent message amount for same time tranfer on mixed C AN bus 3 that on mixed C AN bus 3, the message amount of same time tranfer is less than or equal to the maximum message segment quantity that self can transmit meets the 3rd threshold value.First threshold, Second Threshold and the 3rd threshold value can be done adaptive adjustment in addition.

By the restriction to same time tranfer message amount on every CAN bus, guarantee can not postpone because of the excessive message transmissions that causes of same time tranfer message amount when message transmits on the CAN bus, and then avoid causing automobile safety accident because of same time tranfer message amount cause.

Further, as a kind of preferred implementation, described car body controller 10 comprises packaged unit (not with illustrating), sends after the message packing that described packaged unit is used for receiving from vehicle body CAN bus 1 and/or power CAN bus 2; For example receive a parking brake signal on car body controller 10 driven force CAN buses 2, car body controller 10 directly is packaged into together a frame message to this signal and other signal that will forward and sends on power CAN bus 2,10 of car body controllers carry out simple packing and send, and 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 and will sends after vehicle body power CAN bus 2 and/or mixed C AN bus 3 receive predetermined message access control algorithm process.for example, after hybrid power ECU electronic control unit 11 receives the battery charge state signal from mixed C AN bus 3, can be with this signal access control algorithm, this signal is carried out non-linear migration processing draw corresponding battery charge state signal packing and send on power CAN bus 2, usually due to the impossible real arrival 0% of the electric weight of battery, will be very large to the battery injury if discharge into 0%, when the electric weight of battery remains to a certain extent as 10%, automobile just can not re-use battery, but the battery charge state signal need to be shown on instrument, if also remain 10% but instrument shows the electric weight of battery, chaufeur can think that battery also has electric weight and vehicle can't travel is that other reason causes, therefore hybrid power ECU electronic control unit 11 can carry out the electric weight of battery 10% exporting after non-linear migration processing obtains 0% again, can avoid the chaufeur wrong understanding like this, the relevant control algorithm that adds in hybrid power ECU electronic control unit 11 can also be carried out otherwise processed, such as linear deflection etc., in addition related algorithm is joined in hybrid power ECU electronic control unit 11, just need not add related algorithm in other each node again, the design of each node of automobile is simplified relatively like this.Predetermined message is some messages that need to do 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 the first group node 5 comprises instrument module 51, Reverse Sensor module 52, Climate Control Module 53, sound box module 54 and seat memory module 55; Described the second group node 6 comprises engine electronic control system module 64, change speed gear box ECU electronic control unit 63, braking ECU electronic control unit 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 the 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 guarantee normal operation and the stability of each CAN bus, as shown in Figure 2, as a kind of preferred implementation, be provided with the first matching component between each node of the utility model vehicle body CAN bus 1 and the first group node 5, described the first matching component comprises the first damping element R1 and the second damping element R2, described the first damping element R1 is connected between each node and vehicle body CAN_H bus of described the first group node 5, and described the second damping element R2 is connected between each node and vehicle body CAN_L bus of described the first group node 5.Wherein the value of the first damping element R1 and the second damping element R2 equates, be about 500 ohm, all first matching component sizes on vehicle body CAN bus 1 are relevant to total line length of network, network transmission speed, network cable characteristic, network cable Connector Clip, gateway transceiver characteristic etc., generally about 120 ohm of left and right; The simple fast calculation method of just omiting is adopted in the selection of the size of the first matching component of each node of the first group node 5: after namely the first group node 5 is connected into network, and make the damping element value of matching component on whole vehicle body CAN bus be not less than 100 ohm, be approximately 120 ohm.Can improve the Electromagnetic Compatibility of network like this; Be four as being connected with the first group node 5 on vehicle body CAN bus, adopt said method, the size of calculating each damping element that can just omit is approximately 500 ohm, and final practical application value also will be considered the impact of electromagnetic compatibility.

Further, as a kind of preferred implementation, as shown in Figure 3, in the second group node 6, two nodes of physical location spaced furthest all are provided with the second matching component respectively and between power CAN bus 2, described the second matching component comprises the 4th damping element R4, the 5th damping element R5 and the first charge storage cell C1, wherein be connected between CAN_H bus and CAN_L bus after the 4th damping element R4 and described the 5th damping element R5 series connection, the 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.

All be provided with the second matching component between two nodes of physical location spaced furthest and mixed C AN bus 3 in the 3rd group node 7, described the second matching component comprises the 4th damping element R4, the 5th damping element R5 and the first charge storage cell C1, wherein be connected between CAN_H bus and CAN_L bus after the 4th damping element R4 and described the 5th damping element R5 series connection, the 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, be provided with protective circuit 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; described light-coupled isolation element 9 is connected between each node and described mixed C AN bus 3 of described the 3rd group node 7, is connected between mixed C AN Shield bus and ground after described damping element R3 and the second charge storage cell C2 serial connection.Wherein light-coupled isolation element 9 specifically is connected with the CAN_L bus with the CAN_H bus of mixed C AN bus 3, and be connected with the control part 8 of each node of the 3rd group node 7, first change through light-coupled isolation element 9 after the data output that control part 8 is processed, data formation message transmissions after conversion is on mixed C AN bus 3, the filter that extraneous interference utilizes the 3rd damping element R3 and the second charge storage cell C2 serial connection to form filters, and the message stability that obtains at last 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 the 3rd damping element R3 and the second charge storage cell C2 can be done accommodation with reference to the SAE standard.

As a kind of preferred implementation, the vehicle body CAN bus 1 fault-tolerant CAN bus of sampling in the utility model, power CAN bus 2 and mixed C AN bus 3 adopt high-speed CAN bus, fault-tolerant CAN bus is compared with common low speed CAN bus, have the fault-tolerant transmitting-receiving communication function of Physical layer, high-speed CAN bus has better real-time.

The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.

Need to prove in addition, each concrete technical characterictic described in the above-mentioned specific embodiment in reconcilable situation, can make up by any suitable mode, for fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible array modes.In addition, also can carry out combination in any between various embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (8)

1. a hybrid electric vehicle CAN network system, is characterized in that, comprises vehicle body CAN, power CAN, mixed C AN and diagnosis interface,

Carry out information interaction between described vehicle body CAN and power CAN take car body controller as gateway, carry out information interaction between described power CAN and mixed C AN take the hybrid power ECU electronic control unit as gateway;

Described vehicle body CAN comprises vehicle body CAN bus and the first group node that is connected with described vehicle body CAN bus, described power CAN comprises power CAN bus and the second group node that is connected with described power CAN bus, and described mixed C AN comprises mixed C AN bus and the 3rd group node that is connected with described mixed C AN bus;

Described diagnosis interface is connected with described vehicle body CAN bus, power CAN bus and mixed C AN bus respectively.

2. hybrid electric vehicle CAN network system according to claim 1, it is characterized in that, be provided with the first matching component between each node of described the first group node and described vehicle body CAN bus, described the first matching component comprises the first damping element and the second damping element, described the first damping element is connected between each node and vehicle body CAN_H bus of described the first group node, and described the second damping element is connected between each node and vehicle body CAN_L bus of described the first group node.

3. hybrid electric vehicle CAN network system according to claim 1, it is characterized in that, in described the second group node, two nodes of physical location spaced furthest are provided with the second matching component respectively and between described power CAN bus, described the 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 the 4th damping element and described the 5th damping element series connection, described the first charge storage cell one end is connected between described the 4th damping element and described the 5th damping element, other end ground connection,

In described the 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 the 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 the 4th damping element and described the 5th damping element series connection, described the first charge storage cell one end is connected between described the 4th damping element and described the 5th damping element, other end ground connection.

4. hybrid electric vehicle CAN network system according to claim 1, is characterized in that, is provided with protective circuit between each node of described the 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; described light-coupled isolation element is connected between each node and described mixed C AN bus of described the 3rd group node, is connected between mixed C AN mask bus and ground after described the 3rd damping element and described the second charge storage cell serial connection.

5. hybrid electric vehicle CAN network system according to claim 1, is characterized in that, described vehicle body CAN bus adopts fault-tolerant CAN bus, and described power CAN bus and mixed C AN bus adopt high-speed CAN bus.

6. hybrid electric vehicle CAN network system according to claim 1, is characterized in that, described car body controller comprises packaged unit, sends after the message packing that described packaged unit is used for receiving from vehicle body CAN bus and/or power CAN bus;

Described hybrid power ECU electronic control unit comprises the control algorithm unit, sends after the predetermined message access control algorithm process that described control algorithm unit is used for receiving from vehicle body power CAN bus and/or mixed C AN bus.

7. according to claim 1-6 described hybrid electric vehicle CAN network systems of any one, is characterized in that, described diagnosis interface is the diagnosis interface that meets general international standard.

8. according to claim 1-6 described hybrid electric vehicle CAN network systems of any one, is characterized in that, described the first group node comprises instrument module, Reverse Sensor module, Climate Control Module, car body controller, sound box module and seat memory module;

Described the second group node comprises engine electronic control system module, car body controller, change speed gear box ECU electronic control unit, braking ECU electronic control unit, tractive force ECU electronic control unit, servo-steering module, air bag module, hybrid power ECU electronic control unit and tire pressure module;

Described the 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.

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