CN103770728B - Based on the communicating circuit used for electric vehicle of CAN - Google Patents
Based on the communicating circuit used for electric vehicle of CAN Download PDFInfo
- Publication number
- CN103770728B CN103770728B CN201210407328.6A CN201210407328A CN103770728B CN 103770728 B CN103770728 B CN 103770728B CN 201210407328 A CN201210407328 A CN 201210407328A CN 103770728 B CN103770728 B CN 103770728B
- Authority
- CN
- China
- Prior art keywords
- transceiver
- control unit
- pin
- signal
- entire car
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000006854 communication Effects 0.000 claims abstract description 66
- 238000004891 communication Methods 0.000 claims abstract description 65
- 230000037007 arousal Effects 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 230000002452 interceptive effect Effects 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000003745 diagnosis Methods 0.000 claims description 15
- 230000002618 waking effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Small-Scale Networks (AREA)
Abstract
The invention provides a kind of communicating circuit used for electric vehicle based on CAN, the signal control circuit that described communicating circuit comprises CAN transceiver and is electrically connected with CAN transceiver; CAN transceiver, for transmitting the communication data between the entire car controller main control unit of electronlmobil and attached control unit; Signal control circuit, for described communication data rectifying and wave-filtering, the interfering signal in filtering communication data; Described CAN transceiver at least comprises the second CAN transceiver of first CAN transceiver not with arousal function and a band arousal function, described first CAN transceiver and the second CAN transceiver are connected with a signal control circuit respectively, the extensibility of described technical scheme is strong, can adapt to the communication need of electronlmobil high strength, high complexity.
Description
Technical field
The invention belongs to electrical device of electric vehicle control field, particularly relate to a kind of equipment protecting equipment and method of work thereof of electronlmobil.
Background technology
Current all kinds of microcontroller is more and more extensive in the application of field of automobile control, and automotive circuit diagram degree is more and more higher.For reducing costs and simplifying wire harness and be connected, each automaker adopts various bus control technology one after another, reach the object realizing Real Data Exchangs complicated between the numerous electronic control unit of automobile, CAN is wherein one of topmost bus protocol, because it has, transfer rate is high, cost is low and the feature such as failure-free error handle and error-detection mechanism, so be naturally subject to widespread use in the automotive industry very.
CAN communication network in currently available technology on automobile, its node of network mainly comprises control unit for automatic shift, engine electric spray control unit, ABS system control unit, vehicle body control unit etc.Offered load is low; communication need is not high; only there is a layer diagnosis subnet; network topology structure is too single; extensibility is not strong; and on circuit realiration; existing communicating circuit is general without any safety method in CAN; in this case; when bus load increases, the pressure drop in bus and when signal disturbing is more serious, bus there will be unstable situation; and what when containing much information, this defect can embody is more and more obvious, has very large impact to the safety of car load.But for the special field of electronlmobil, its number of network node is more than the nodes of orthodox car, higher than conventional vehicle body network speed, stability, reliability requirement are stricter, integrated traditional subnetwork, electronic subnetwork (comprising pure electronic subnetwork and hybrid power subnetwork), demarcation, diagnosis subnetwork are integrated simultaneously, and conventional CAN communication network is difficult to adapt to the high strength of electronlmobil, the communication need of high complexity.
Summary of the invention
It is too single that the present invention is intended to solve CAN communication network topology structure in prior art; extensibility is not strong; the technical matters that communicating circuit is not protected, provides a kind of communicating circuit used for electric vehicle based on CAN, adapts to the communication need of electronlmobil high strength, high complexity.
The invention provides a kind of communicating circuit used for electric vehicle based on CAN, described electronlmobil comprises the attached control unit on entire car controller main control unit and electronlmobil, the signal control circuit that described communicating circuit used for electric vehicle comprises CAN transceiver and is electrically connected with CAN transceiver;
CAN transceiver, for transmitting the communication data between the entire car controller main control unit of electronlmobil and attached control unit;
Signal control circuit, for described communication data rectifying and wave-filtering, the interfering signal in filtering communication data;
Described CAN transceiver at least comprises the second CAN transceiver of first CAN transceiver not with arousal function and a band arousal function, described first CAN transceiver and the second CAN transceiver are connected with a signal control circuit respectively, are respectively used to transmit the communication data between entire car controller main control unit and attached control unit.
Preferably, each described signal control circuit comprises two the first branch roads and the second branch road that are connected in series by resistance and inductance respectively, described first branch road one end is used for being connected with the pin CANH of CAN transceiver, described second branch road one end is used for being connected with the pin CANL of CAN transceiver, and the first branch road is connected with CAN respectively with the other end of the second branch road.
Preferably, respectively and connect a resistance, the other end of resistance passes through capacity earth for described first branch road and the second branch road.
Preferably, described first branch road and the second branch road respectively and connect a differential concatenation zener diode combination, the other end ground connection of described diode combinations.
Preferably, described first branch road and the second branch road are gone back respectively and are connected to an electric capacity, the other end ground connection of electric capacity.
Preferably, when described electronlmobil is pure electric automobile, attached control unit on described automobile comprises vehicle body control unit, inline diagnosis unit and transmission control unit, pin TXD, RXD of described first CAN transceiver are connected with entire car controller main control unit, pin CANH, CANL be connected with one end of two branch roads of signal control circuit respectively, the other end of described two branch roads is connected with vehicle body control unit, inline diagnosis unit and transmission control unit respectively by CAN;
When described electronlmobil is hybrid vehicle, attached control unit on described automobile comprises vehicle body control unit, engine management unit, inline diagnosis unit and transmission control unit, pin TXD, RXD of described first CAN transceiver are connected with entire car controller main control unit, pin CANH, CANL be connected with one end of two branch roads of signal control circuit respectively, the other end of described two branch roads is respectively by CAN and vehicle body control unit, and engine management unit, inline diagnosis unit and transmission control unit are connected.
Preferably, attached control unit on described electronlmobil also comprises motor control unit, battery management module unit, pin TXD, RXD of described second CAN transceiver are connected with entire car controller main control unit, pin CANH, CANL be connected with one end of two branch roads of signal control circuit respectively, the other end of described two branch roads is respectively by CAN and motor control unit, and battery management module unit is connected.
Preferably, described second CAN transceiver is also provided with the pin be electrically connected with entire car controller main control unit
and pin EN;
Work as pin
and the while of pin EN during input high level signal, the second CAN transceiver is in normal mode;
Work as pin
and the while of pin EN during input low level signal, the second CAN transceiver is in standby mode;
Work as pin
input high level signal, during pin EN input low level signal, the second CAN transceiver is in only listens pattern;
Work as pin
input low level signal, during pin EN input high level signal, the second CAN transceiver is in sleep pattern.
Preferably, described second CAN transceiver is also provided with pin WAKE and pin INH, described pin WAKE is connected with entire car controller main control unit respectively with pin INH, described pin INH is for waking entire car controller main control unit up when CAN receiving wake-up signal, and described WAKE pin is used for entire car controller main control unit transmission wake-up signal wakes CAN transceiver and enters normal mode by sleep pattern.
Preferably, described CAN transceiver also comprises the 3rd CAN transceiver of a band arousal function, and described 3rd CAN transceiver is electrically connected with entire car controller main control unit and a signal control circuit respectively.
The above technical scheme, communication is carried out for controlling entire car controller from the attached control unit on different electronlmobils by adding at least two CAN transceiver in hybrid vehicle system, two CAN transceiver are independently electrically connected with entire car controller main control unit and a signal control circuit, substantially increase the data volume of Full Vehicle System communication, make the communication rapid and convenient more of other controllers on entire car controller and electronlmobil, improve the performance of full-vehicle control.And can data interfering signal effectively in filtering communication process by signal control circuit, available protecting is carried out to communicating circuit, the communication need of electronlmobil high strength, high complexity can have been adapted to.
Accompanying drawing explanation
Fig. 1 is the module composition diagram of a kind of embodiment of communicating circuit used for electric vehicle that the present invention is based on CAN;
Fig. 2 is the communicating circuit used for electric vehicle communication connection diagram on electronlmobil that the present invention is based on CAN;
Fig. 3 is the communicating circuit structural representation not with arousal function of the communicating circuit used for electric vehicle that the present invention is based on CAN;
Fig. 4 is the communicating circuit structural representation of the band arousal function of the communicating circuit used for electric vehicle that the present invention is based on CAN.
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.
As shown in Figure 1, the invention provides a kind of communicating circuit used for electric vehicle based on CAN, electronlmobil described in the application refers to the automobile with electric model, comprise pure electric automobile and the hybrid vehicle with electric model, the hybrid vehicle described in the application all refers to the hybrid vehicle with electric model.Electronlmobil involved in the present invention comprises the attached control unit 40 on entire car controller main control unit 10 and electronlmobil, attached control unit described here comprises other control units on the electronlmobil except entire car controller, as vehicle body control unit, engine management unit (hybrid vehicle have this unit, pure electric automobile is then without this element), inline diagnosis unit, transmission control unit, motor control unit, battery management module unit etc.The signal control circuit 30 that described communicating circuit comprises CAN transceiver 20 and is electrically connected with CAN transceiver 20, described CAN transceiver 20 transmits the communication data between two communication units mutually carrying out communication, described signal control circuit 30 for carrying out rectifying and wave-filtering to described communication data, the interfering signal of adulterating in filtering communication data.
As shown in Figure 2, CAN transceiver 20 of the present invention at least comprises the second CAN transceiver 22 of first CAN transceiver 21 not with arousal function and a band arousal function, described first CAN transceiver 21 is connected with a signal control circuit respectively with the second CAN transceiver 22, namely the first CAN transceiver is connected with a signal control circuit 31, second CAN transceiver 22 is connected with a signal control circuit 32, the structure of described two signal control circuits is identical, described first CAN transceiver 21 and described second CAN transceiver 22 are respectively used to transmit the communication data between entire car controller main control unit 10 and attached control unit 40.Described first CAN transceiver 21 is for entire car controller main control unit 10 and the high-speed data communications between vehicle body control unit, engine management unit (hybrid vehicle has this unit, pure electric automobile is then without this element), inline diagnosis unit and transmission control unit etc.; Described second CAN transceiver 22 is for entire car controller main control unit 10 and motor control unit, the high-speed data communications of battery management module unit etc., motor control unit described here comprises precursor motor control unit on electronlmobil and rear-guard motor control unit.
Further, CAN transceiver 20 of the present invention also comprises one and is also electrically connected with a signal control circuit for the 3rd CAN transceiver the 23, three CAN transceiver 23 be electrically connected with entire car controller main control unit 10.The structure 23 of the 3rd CAN transceiver 23 is identical with the structure 22 of the second CAN transceiver, and the signal control circuit 33 that the 3rd CAN transceiver 23 connects also is identical with the structure of the signal control circuit 31,32 be connected with the first CAN transceiver 20 and the second CAN transceiver 22 respectively recited above.3rd CAN transceiver 23 described here is temporarily vacant, and namely this road CAN transceiver communicating circuit reserved is used for expansion, adds alerting ability and the extensibility of system, for other hardware systems that following electronlmobil is installed and peripheral hardware upgrading provide convenient.
At least two-way CAN communication circuit that the above embodiment of the present invention provides works simultaneously and can provide larger communication bandwidth, more complicated and that data volume is huge communication task can be completed, the performance of entirety not only achieves the demand being difficult to reach high speed communication in traditional CAN communication network, and the reliability of the CAN network greatly to be improved by peripheral circuit, in order to the stability of CAN communication under tackling in electronlmobil complex environment more and improve various harsies environment that electronlmobil may run into.
Below, the present invention describes in detail one by one by the concrete structure of each road CAN communication circuit composition and function.
Described in composition graphs 3 and Fig. 4, signal control circuit of the present invention comprises two the first branch roads and the second branch road that are connected in series by resistance and inductance respectively, described first branch road one end is used for being connected with the pin CANH of CAN transceiver, described second branch road one end is used for being connected with the pin CANL of CAN transceiver, and the first branch road is connected with CAN respectively with the other end of the second branch road.
In Fig. 3, wherein one the routing resistance R5 of signal control circuit and inductance L 1 serial connection form, another routing resistance R6 and inductance L 2 serial connection form, first CAN transceiver 21 receives by these two branch roads communication data that on electronlmobils, attached control unit 40 sends and sends this communication data to full-vehicle control unit, simultaneously first transceiver 21 receives by these two branch roads the communication data the attached control unit 40 sent to by this communication data on vehicle that full-vehicle control unit send, described two branch roads are arranged can be disturbed in order to the common-mode signal in filtering communication data by the combinations of resistance and inductance, purify the communication data of attached control unit 40 on entire car controller and electronlmobil, ensure high efficiency and the stability of communicating circuit work.
Preferably, respectively and connect the resistance of 60 Ω, the other end of resistance passes through capacity earth for the first branch road described in described Fig. 3 and the second branch road.According to ISO11898, specified bus load in CAN communication circuit is 60 Ω, therefore end all termination resistance of every bar CAN, described resistance is preferably the resistance of 120 Ω, in order to improve the Electro Magnetic Compatibility of CAN high-speed bus system, be connected between two branch roads after being mutually connected in series with two 60 Ω resistance R7, R8, and draw a line from one end that described resistance R7 is connected with resistance R8 and be connected with an electric capacity C3, the other end ground connection of electric capacity C3.
Further, the first branch road described in Fig. 3 and the second branch road respectively and connect a differential concatenation zener diode combination, the other end ground connection of described diode combinations.As shown in Figure 3, diode D1 and diode D2 is oppositely connected in series rear formation diode combinations, and one end of this diode combinations is connected with the first branch road CAN_H, other end ground connection; Diode D3 and diode D4 is oppositely connected in series another diode combinations of rear formation, and one end of this diode combinations is connected with the second branch road CAN_L, other end ground connection.This kind of preferred version described here, effectively can improve stability and the electrostatic interference can effectively eliminated in communication data that in circuit, communication data transmits, ensure the particularity of communication data.
Closer, the first branch road described in Fig. 3 and the second branch road are gone back respectively and are connected to an electric capacity, the other end ground connection of electric capacity.First branch road CAN_H is by electric capacity C2 ground connection, and the second branch road CAN_L is by electric capacity C4 ground connection, and described in this kind of further filtering of the plan of establishment, the interfering signal of communication data, further ensures stability and the particularity of data transmission.
In Fig. 3, first CAN transceiver 21 pin CANH and pin CANL is connected with CAN respectively by two branch roads of signal control circuit, first CAN transceiver is also electrically connected with entire car controller main control unit 10 with pin RXD by pin TXD, CAN communication circuit described in the present embodiment is responsible for entire car controller and vehicle body control unit, engine management unit (hybrid vehicle has this unit, pure electric automobile is then without this element), data transmission communication between inline diagnosis unit and transmission control unit, namely the first CAN transceiver 21 is connected by signal control circuit CAN, CAN again with vehicle body control unit, engine management unit (hybrid vehicle has this unit, pure electric automobile is then without this element), inline diagnosis unit and transmission control unit are connected, entire car controller main control unit 10 controls the first CAN transceiver 21 by the pin of CAN_TXD and CAN_RXD two shown in Fig. 3 and works, this transceiver is responsible for entire car controller and vehicle body control unit under the control of entire car controller main control unit 10, engine management unit (hybrid vehicle having this unit), data communication is carried out between inline diagnosis unit and transmission control unit, and by signal control circuit, filter rectification process is carried out to communication data.
Shown in composition graphs 4, the structure of the signal control circuit shown in Fig. 4 is identical with the structure of signal control circuit in Fig. 3, the signal control circuit of this part also comprises two branch roads, Article 1, prop up routing resistance R12 and inductance L 3 serial connection form, Article 2 props up routing resistance R13 and inductance L 4 serial connection forms, and Article 1 branch road two ends connect pin CANH and the CAN of the second CAN transceiver 22 respectively, the two ends of Article 2 branch road connect pin CANL and the CAN of the second CAN transceiver 22 respectively.
Preferably, according to the set-up mode of the signal control circuit in Fig. 3, above-described Article 1 branch road is also connected to 60 Ω resistance R16, electric capacity C5 and backward diode combination D5 and D6; Described Article 2 branch road is also connected to 60 Ω resistance R17, electric capacity C7 and backward diode combination D7 and D8.
The CAN communication circuit of embodiment shown in Fig. 4 is responsible for entire car controller and motor control unit, data transmission communication between battery management module unit, namely the second CAN transceiver 22 is connected with CAN by signal control circuit, CAN again with motor control unit, battery management module unit is connected, entire car controller main control unit 10 controls the second CAN transceiver 22 by the pin of CAN_TXD and CAN_RXD two shown in Fig. 4 and works, this transceiver is responsible for entire car controller and motor control unit under the control of entire car controller main control unit 10, data communication is carried out between battery management module unit, and by signal control circuit, filter rectification process is carried out to communication data.
Preferably, described second CAN transceiver 21 is also provided with pin
and pin EN, these two pins are electrically connected with entire car controller main control unit 10 respectively, and described second CAN transceiver 21 has four kinds of different mode of operations:
Normal mode: namely the second CAN transceiver is in normal mode of operation, for CAN communication, the data communication being responsible for entire car controller and attached control unit 40 is transmitted, the digital bit stream inputted from pin TXD is converted into corresponding emulation bus signal, second CAN transceiver 22 monitors CAN simultaneously, converts the bus signals of simulation to corresponding digital bit stream and exports at RXD.By controlling pin
and pin EN input high level simultaneously, the second CAN transceiver can be controlled and enter this normal mode.
Only listen pattern: realize the performance of only listening.The second CAN transceiver under this pattern only allows to receive message from CAN, and do not allow to send message to CAN, the digital bit stream of the second CAN transceiver 21 on pin TXD is all left in the basket, and like this, can prevent node from affecting CAN.By controlling pin
input high level, pin EN input low level just can control the second CAN transceiver and enter and only listen pattern.
Standby mode: the second CAN transceiver 22 can reach low-power consumption in stand-by mode.Now the consumption of power of the second CAN transceiver 22 significantly decreases than normal mode or under only listening pattern, in standby mode, the second CAN transceiver 22 can not send and receive conventional CAN message, but the second CAN transceiver 22 still can monitor the CAN message in CAN.By controlling pin
input and pin EN input low level just can control the second CAN transceiver and enter standby mode.
Sleep pattern: the second CAN transceiver 22 also can realize low-power consumption in a sleep mode, current draw under this pattern be consistent under standby mode, but the pin INH of the second CAN transceiver 22 is now in vacant state (under standby mode, this pin presents high level), can thoroughly turn off and the contacting of outside, the second CAN transceiver 22 under this pattern can not send and receive conventional CAN message, can not monitor the CAN message in CAN.By controlling pin
input low level, pin EN input high level just can control the second CAN transceiver and enter sleep pattern.
Further, described sleep pattern by enter sleep commands start, it is mainly used for making the second CAN transceiver 22 enter sleep pattern, the second CAN transceiver 22 receive enter sleep commands time, second CAN transceiver is disabled immediately, and then the second CAN transceiver 22 enters sleep pattern.
Described second CAN transceiver 22 is also provided with pin WAKE and pin INH, described pin WAKE is connected with entire car controller main control unit 10 respectively with pin INH, described pin INH is for waking entire car controller main control unit 10 up when CAN receiving wake-up signal, and described WAKE pin sends wake-up signal wakes CAN transceiver for entire car controller main control unit 10 and enters normal mode by sleep pattern.Its specific works mode is as follows: when CAN receiving wake-up signal, described pin INH is used for sending a high level and wakes entire car controller main control unit 10 up, and entire car controller main control unit 10 wakes CAN transceiver up to conversely WAKE pin wake-up signal again and enters normal mode by sleep pattern.Under normal mode, the second CAN transceiver 22 can be transmitted and receive data by bus CANH and CANL, and when entire car controller main control unit and the second CAN transceiver 22 are in sleep pattern simultaneously time, if CAN listens to a wake command, on the pin INH of the second CAN transceiver 22, then send a high level signal wake entire car controller main control unit 10 up, entire car controller main control unit 10 sends wake command to the second CAN transceiver 22 by pin WAKE again, the second CAN transceiver 22 is made to enter normal mode by sleep pattern, now just can wake CAN communication controller up, the communication between entire car controller and battery charger is realized with this.This arousal function described in the present embodiment mainly keeps for battery charger, for electronlmobil, needs to utilize CAN to wake entire car controller up and charges to described electronlmobil in order to do interface with battery charger.
In addition, the structure 23 of the 3rd CAN transceiver 23 described in this enforcement is identical with the structure 22 of the second CAN transceiver, also there is the function described in above-described embodiment and pin, the signal control circuit 33 that 3rd CAN transceiver 23 connects also is identical with recited above with the structure of the signal control circuit that the second CAN transceiver 22 is connected, and the optimum configurations of concrete components and parts can be determined according to the communication situation of concrete application.
The technical solution of the present invention, first in stability, compared with traditional CAN network communication structure, effectively can improve the data volume of communication, make the communication rapid and convenient more between the attached control unit 40 on entire car controller and electronlmobil, and the function that will increase for future has reserved port, the upgrade cost after effectively reducing in development process.
Secondly, on circuit realiration, introduce inductance and eliminate common-mode signal interference, improve the stability of Signal transmissions in CAN, and in bus, adopt zener diode to combine, further improve the stability of bus.
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.
Claims (7)
1. based on a communicating circuit used for electric vehicle for CAN, it is characterized in that: the signal control circuit that described communicating circuit used for electric vehicle comprises CAN transceiver and is electrically connected with CAN transceiver;
CAN transceiver, for transmitting the communication data between the entire car controller main control unit of electronlmobil and attached control unit;
Signal control circuit, for described communication data rectifying and wave-filtering, the interfering signal in filtering communication data;
Described CAN transceiver at least comprises the second CAN transceiver of first CAN transceiver not with arousal function and a band arousal function, described first CAN transceiver and the second CAN transceiver are connected with a signal control circuit respectively, are respectively used to transmit the communication data between entire car controller main control unit and attached control unit;
Each described signal control circuit comprises two the first branch roads and the second branch road that are connected in series by resistance and inductance respectively, described first branch road one end is used for being connected with the pin CANH of CAN transceiver, described second branch road one end is used for being connected with the pin CANL of CAN transceiver, and the first branch road is connected with CAN respectively with the other end of the second branch road;
When described electronlmobil is pure electric automobile, attached control unit on described automobile comprises vehicle body control unit, inline diagnosis unit and transmission control unit, pin TXD, RXD of described first CAN transceiver are connected with entire car controller main control unit, pin CANH, CANL be connected with one end of two branch roads of signal control circuit respectively, the other end of described two branch roads is connected with vehicle body control unit, inline diagnosis unit and transmission control unit respectively by CAN;
When described electronlmobil is hybrid vehicle, attached control unit on described electronlmobil comprises vehicle body control unit, engine management unit, inline diagnosis unit and transmission control unit, pin TXD, RXD of described first CAN transceiver are connected with entire car controller main control unit, pin CANH, CANL be connected with one end of two branch roads of signal control circuit respectively, the other end of described two branch roads is respectively by CAN and vehicle body control unit, and engine management unit, inline diagnosis unit and transmission control unit are connected.
2. the communicating circuit used for electric vehicle based on CAN according to claim 1, is characterized in that, respectively and connect a resistance, the other end of resistance passes through capacity earth for described first branch road and the second branch road.
3. the communicating circuit used for electric vehicle based on CAN according to claim 2, is characterized in that, described first branch road and the second branch road respectively and connect a differential concatenation zener diode combination, the other end ground connection of described diode combinations.
4. the communicating circuit used for electric vehicle based on CAN according to claim 1, it is characterized in that, attached control unit on described electronlmobil also comprises motor control unit, battery management module unit, pin TXD, RXD of described second CAN transceiver are connected with entire car controller main control unit, pin CANH, CANL be connected with one end of two branch roads of signal control circuit respectively, the other end of described two branch roads is respectively by CAN and motor control unit, and battery management module unit is connected.
5. the communicating circuit used for electric vehicle based on CAN according to claim 4, is characterized in that, described second CAN transceiver is also provided with the pin be electrically connected with entire car controller main control unit
and pin EN;
Work as pin
and the while of pin EN during input high level signal, the second CAN transceiver is in normal mode;
Work as pin
and the while of pin EN during input low level signal, the second CAN transceiver is in standby mode;
Work as pin
input high level signal, during pin EN input low level signal, the second CAN transceiver is in only listens pattern;
Work as pin
input low level signal, during pin EN input high level signal, the second CAN transceiver is in sleep pattern.
6. the communicating circuit used for electric vehicle based on CAN according to claim 5, it is characterized in that, described second CAN transceiver is also provided with pin WAKE and pin INH, described pin WAKE is connected with entire car controller main control unit respectively with pin INH, described pin INH is for waking entire car controller main control unit up when CAN receiving wake-up signal, and described WAKE pin is used for entire car controller main control unit transmission wake-up signal wakes CAN transceiver and enters normal mode by sleep pattern.
7. the communicating circuit used for electric vehicle based on CAN according to claim 1, it is characterized in that, described CAN transceiver also comprises the 3rd CAN transceiver of a band arousal function, and described 3rd CAN transceiver is electrically connected with entire car controller main control unit and a signal control circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210407328.6A CN103770728B (en) | 2012-10-23 | 2012-10-23 | Based on the communicating circuit used for electric vehicle of CAN |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210407328.6A CN103770728B (en) | 2012-10-23 | 2012-10-23 | Based on the communicating circuit used for electric vehicle of CAN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103770728A CN103770728A (en) | 2014-05-07 |
| CN103770728B true CN103770728B (en) | 2016-04-27 |
Family
ID=50563642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210407328.6A Active CN103770728B (en) | 2012-10-23 | 2012-10-23 | Based on the communicating circuit used for electric vehicle of CAN |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103770728B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106713097B (en) * | 2017-02-08 | 2022-07-29 | 广州致远电子股份有限公司 | CAN transceiver module |
| CN106985688A (en) * | 2017-03-20 | 2017-07-28 | 浙江农业商贸职业学院 | Battery status monitoring system and method for electric automobile |
| CN106961369A (en) * | 2017-03-20 | 2017-07-18 | 浙江工业职业技术学院 | Antitheft security system and method for electric automobile |
| CN106945527A (en) * | 2017-03-20 | 2017-07-14 | 浙江农业商贸职业学院 | Communication coupled system and method between electric automobile |
| CN108415404A (en) * | 2018-02-12 | 2018-08-17 | 南京越博动力系统股份有限公司 | Modular entire car controller power supply and interface circuit and its design method |
| CN110231783B (en) * | 2019-04-29 | 2020-10-27 | 东风商用车有限公司 | Bus type DCM sleep quiescent current control system and control method |
| CN112822082B (en) * | 2021-01-11 | 2023-05-23 | 明峰医疗系统股份有限公司 | High-speed CAN communication method with high stability |
| CN114609999A (en) * | 2022-03-11 | 2022-06-10 | 格力博(江苏)股份有限公司 | Connecting structure for outdoor power equipment diagnosis and diagnosis equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7017072B1 (en) * | 1999-09-30 | 2006-03-21 | Infineon Technologies Ag | Protection circuit for an access-arbitrated bus system network |
| CN201511914U (en) * | 2009-09-29 | 2010-06-23 | 上海汇众汽车制造有限公司 | CAN bus vehicle body control system with sleeping and waking function |
| CN201541271U (en) * | 2009-02-02 | 2010-08-04 | 上海华魏自动化设备有限公司 | Partial bus node automatic recovery device |
| CN202995390U (en) * | 2012-10-23 | 2013-06-12 | 广州汽车集团股份有限公司 | Communication circuit used in electric vehicle based on CAN bus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10136465A (en) * | 1996-10-24 | 1998-05-22 | Yazaki Corp | Vehicle data transmission system |
| JP3442633B2 (en) * | 1997-11-27 | 2003-09-02 | 矢崎総業株式会社 | Vehicle multiplex transmission equipment |
-
2012
- 2012-10-23 CN CN201210407328.6A patent/CN103770728B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7017072B1 (en) * | 1999-09-30 | 2006-03-21 | Infineon Technologies Ag | Protection circuit for an access-arbitrated bus system network |
| CN201541271U (en) * | 2009-02-02 | 2010-08-04 | 上海华魏自动化设备有限公司 | Partial bus node automatic recovery device |
| CN201511914U (en) * | 2009-09-29 | 2010-06-23 | 上海汇众汽车制造有限公司 | CAN bus vehicle body control system with sleeping and waking function |
| CN202995390U (en) * | 2012-10-23 | 2013-06-12 | 广州汽车集团股份有限公司 | Communication circuit used in electric vehicle based on CAN bus |
Non-Patent Citations (2)
| Title |
|---|
| CAN总线接口电路设计;吴鹏等;《中国西部科技》;20090531;第08卷(第13期);第51-53页 * |
| 一款CAN总线收发器芯片的电路设计;唐兴刚等;《微电子学与计算机》;20110531;第28卷(第5期);第125-129页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103770728A (en) | 2014-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103770728B (en) | Based on the communicating circuit used for electric vehicle of CAN | |
| CN103053137B (en) | Processing system, processing device and power supply control method | |
| CN201114146Y (en) | Tandem type mixing power automobile control system | |
| CN101240767B (en) | Information integration based passenger car starting-up control system | |
| CN202995390U (en) | Communication circuit used in electric vehicle based on CAN bus | |
| CN101456391A (en) | Automobile complete vehicle electronic appliance CANBUS network control method | |
| CN111953588A (en) | Vehicle-mounted T-BOX based on vehicle-mounted Ethernet | |
| CN101456392B (en) | Automobile complete vehicle electronic appliance CANBUS network control system | |
| CN101639689A (en) | A can bus network control system | |
| CN110562275B (en) | Multichannel dual-redundancy rail transit vehicle reconnection system and method | |
| CN103917938A (en) | Electronic control device and microcomputer control method | |
| CN202394098U (en) | Vehicle bus communication redundant system | |
| CN101888335A (en) | CAN bus-bluetooth intelligent network bridge | |
| CN213585817U (en) | RTL9047 AA-based automobile gateway hardware platform | |
| CN103179012A (en) | FlexRay network node adopting iCoupler magnetic isolation protecting measures | |
| CN109617921B (en) | Conversion device and method for FlexRay protocol and 802.11p protocol | |
| CN208739138U (en) | A kind of car networking terminal for supporting CAN FD and Ethernet | |
| CN209118135U (en) | A kind of automobile-used CAN bus telecommunication circuit of electrical salf-walking | |
| CN201699700U (en) | CAN bus-Bluetooth intelligent network bridge | |
| CN102642507A (en) | Two-wire automotive electronic control system | |
| CN108089481A (en) | A kind of automobile detection system circuit based on CAN/LIN | |
| CN101992736A (en) | Car communication system and communication method thereof | |
| CN212258993U (en) | Vehicle-mounted T-BOX based on vehicle-mounted Ethernet | |
| CN218634133U (en) | Ethernet communication conversion equipment | |
| CN109327369A (en) | Mine hydraulic bracket communication network extender and its application method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211230 Address after: 511400 No.36 Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: GAC AION New Energy Vehicle Co.,Ltd. Address before: 510030 23 building, Cheng Yue mansion 448-458, Dongfeng Middle Road, Yuexiu District, Guangzhou, Guangdong. Patentee before: GUANGZHOU AUTOMOBILE GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |