CN104842903A - Electric control system of electric vehicle, electric vehicle and fault information transfer method - Google Patents
Electric control system of electric vehicle, electric vehicle and fault information transfer method Download PDFInfo
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- CN104842903A CN104842903A CN201410791046.XA CN201410791046A CN104842903A CN 104842903 A CN104842903 A CN 104842903A CN 201410791046 A CN201410791046 A CN 201410791046A CN 104842903 A CN104842903 A CN 104842903A
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- entire car
- electronlmobil
- car controller
- security monitoring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an electric control system of an electric vehicle, the electric vehicle and a fault information transfer method. The electric control system of the electric vehicle comprises a whole vehicle controller (1), a motor controller (2), a battery management system (3), a CAN bus (4) for connecting the whole vehicle controller (1), the motor controller (2) and the battery management system (3) as a whole to transfer information which includes fault information, and a hard wire (5) for sending the fault information to the motor controller (2) and the battery management system (3) when the whole vehicle controller (1) detects that the system function safety is failed. The electric control system of the electric vehicle, provided by the invention, can transfer the fault information to a related controller system more reliably when the system has a power safety failure, so that the function safety level of the electric control system of the electric vehicle is greatly improved.
Description
Technical field
The present invention relates to electronlmobil security technology area, particularly relate to a kind of electronlmobil electric-control system, there is its electronlmobil and corresponding electronlmobil safety failure information transmitting methods.
Background technology
Efficient, energy-conservation, the oligosaprobic advantage of electronlmobil, has become the Main way of contemporary automotive development.Electronlmobil electric-control system mainly comprises: entire car controller (VCU), electric machine controller (MCU) and battery management system (BMS).
In the prior art, in order to improve the functional safety of electronlmobil electric-control system, in entire car controller, electric machine controller, battery management system, introduce functional safety design and the failure handling mechanisms of each system self all respectively.From single automatically controlled control system, can realize the functional safety fault from internal system, allow single electric-control system can reach a kind of functional safety grade preferably.
But the functional safety grade allowing the car load of electronlmobil can reach higher, just needs three of electronlmobil electric-control system large core components can work in coordination with processing capacity Safe Failure fault.At present, entire car controller (VCU), electric machine controller (MCU) and battery management system (BMS) carry out failure message transmission by CAN, allow three of electronlmobil electric-control system large core components (subsystem) that functional safety failure of removal information can be obtained in time, and allow each part carry out faulty condition process in time and to enter safety mode.
Adopt CAN to carry out the method for functional safety failure message transmission, can realize, when functional safety fault appears in single automatically controlled subsystem, information is passed to other related electric control systems.But, when there is the faults such as CAN inefficacy, just directly failure message cannot be passed to other relevant related electric control subsystems.
Therefore wish a kind of technical scheme to overcome or at least to alleviate in the above-mentioned defect of prior art one or more.
Summary of the invention
A kind of electronlmobil electric-control system is the object of the present invention is to provide to overcome or at least to alleviate in the above-mentioned defect of prior art one or more.
For achieving the above object, the invention provides a kind of electronlmobil electric-control system, described electronlmobil electric-control system comprises: entire car controller; Electric machine controller; Battery management system; CAN; And rigid line, wherein, described entire car controller, electric machine controller and battery management system link together by described CAN, the information of carrying out transmission, described information comprises failure message, described rigid line is connected between entire car controller and electric machine controller, battery management system, during for systemic-function Safe Failure fault being detected at entire car controller, by rigid line, failure message is sent to electric machine controller and battery management system.
Preferably, described entire car controller comprises host CPU and security monitoring CPU, described security monitoring CPU monitors the mode of operation of described host CPU, when functional safety fault appears in main CPU system, failure message is sent to electric machine controller and battery management system by described CAN and by described rigid line by described security monitoring CPU.
Preferably, communication and security data exchange is carried out by spi bus between the host CPU of described entire car controller and security monitoring CPU.
Preferably, described entire car controller comprises a switching valve further, the security monitoring CPU of described entire car controller is connected with described rigid line by described switching valve, when functional safety fault appears in described main CPU system, described security monitoring CPU exports a low level or high level by described switching valve to described rigid line.
The present invention also provides a kind of electronlmobil, and described electronlmobil comprises electronlmobil electric-control system as above.
The present invention also provides a kind of electronlmobil safety failure information transmitting methods, in the process, when entire car controller detects systemic-function Safe Failure fault, by CAN, failure message is sent to electric machine controller and battery management system, by one group of hard signal, failure message is sent to electric machine controller and battery management system simultaneously.
Preferably, in the process, described entire car controller comprises host CPU and security monitoring, described security monitoring CPU monitors the mode of operation of described host CPU, when functional safety fault appears in main CPU system, failure message is sent to electric machine controller and battery management system by described CAN and by described rigid line by described security monitoring CPU.
Preferably, in the process, communication and security data exchange is carried out by spi bus between the host CPU of described entire car controller and security monitoring CPU.
Preferably, in the process, described entire car controller comprises a switching valve further, the security monitoring CPU of described entire car controller is connected with described rigid line by described switching valve, when functional safety fault appears in described main CPU system, described security monitoring CPU exports a low level or high level by described switching valve to described rigid line.
Failure message more reliably can be passed to CCU system when functional safety failure of removal appears in system by electronlmobil electric-control system provided by the present invention.By adding the method for two redundant transmission of hard-wire transfer based on CAN network transmission, more reliably the functional safety information of electric-control system can be transmitted between multiple controller system, and carry out the fault handling of timely failure-free functional safety.Greatly can improve the functional safety rank of electronlmobil electric-control system.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of electronlmobil electric-control system according to an embodiment of the invention.
Reference numeral:
| 1 | Entire car controller | 5 | Rigid line |
| 2 | Electric machine controller | 11 | Host CPU |
| 3 | Battery management system | 12 | Security monitoring CPU |
| 4 | CAN | 13 | Spi bus |
Detailed description of the invention
For making object of the invention process, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Described embodiment is the present invention's part embodiment, instead of whole embodiments.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.
In describing the invention; it will be appreciated that; term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limiting the scope of the invention.
Electronlmobil electric-control system according to the present invention comprises: entire car controller; Electric machine controller; Battery management system; CAN; And rigid line.Described entire car controller, electric machine controller and battery management system link together by described CAN, the information of carrying out transmission, described information comprises failure message, described rigid line is connected between entire car controller and electric machine controller, battery management system, during for systemic-function Safe Failure fault being detected at entire car controller, by rigid line, failure message is sent to electric machine controller and battery management system.
Electronlmobil safety failure information transmitting methods according to the present invention comprises: when entire car controller detects systemic-function Safe Failure fault, by CAN, failure message is sent to electric machine controller and battery management system, by one group of hard signal, failure message is sent to electric machine controller and battery management system simultaneously.
Adopt electronlmobil electric-control system provided by the present invention, or adopt electronlmobil safety failure information transmitting methods provided by the invention, more reliably failure message can be passed to CCU system when functional safety failure of removal appears in system.By adding the method for two redundant transmission of hard-wire transfer based on CAN network transmission, more reliably the functional safety information of electric-control system can be transmitted between multiple controller system, and carry out the fault handling of timely failure-free functional safety.Greatly can improve the functional safety rank of electronlmobil electric-control system.
Fig. 1 is the schematic diagram of electronlmobil electric-control system according to an embodiment of the invention.Electronlmobil electric-control system shown in Fig. 1 comprises entire car controller (VCU) 1, electric machine controller (MCU) 2, battery management system (BMS) 3, CAN 4 and rigid line 5.
Entire car controller 1, electric machine controller 2 and battery management system 3 are three large core components of electronlmobil electric-control system.Entire car controller 1, electric machine controller 2 and battery management system 3 link together by CAN 4, carry out information transmission, and described information comprises failure message.Rigid line 5 is connected between entire car controller 1 and electric machine controller 2, battery management system 3, during for systemic-function Safe Failure fault being detected at entire car controller, by rigid line 5, failure message is sent to electric machine controller 2 and battery management system 3.Wherein, described failure message comprises systemic-function safety failure information.Functional safety depends on the proper operation of system or equipment to input, and it is a part for all safety.Realize when each specific security function obtains, and time the required performance rate of each security function is satisfied, functional safety target just reaches.
Entire car controller 1 comprises host CPU 11 and security monitoring CPU 12, and security monitoring CPU 12 monitors the mode of operation of host CPU 11.Advantageously, communication and security data exchange is carried out by spi bus between the host CPU 11 of entire car controller 1 and security monitoring CPU12.Preferably, using host CPU 11 as main frame.SPI is the abbreviation of Serial Peripheral Interface (SPI) (Serial Per ipheral Interface).Spi bus at least comprises a clock lines, a Data In-Line and a DOL Data Output Line.
When functional safety fault appears in host CPU 11 system, signal can be sent to security monitoring CPU 12 by spi bus.At this moment, failure message to be sent to electric machine controller 2 outside entire car controller 1 and battery management system 3 by CAN 4 by security monitoring CPU 12 simultaneously.Meanwhile, security monitoring CPU 12 can outwards send a low level signal by the switching valve of in entire car controller 1 simultaneously.This low level signal can send to electric machine controller 2 and battery management system 3 by rigid line 5.That is, when functional safety fault appears in main CPU system, failure message is sent to electric machine controller and battery management system by CAN and by rigid line by security monitoring CPU.
On-off action it is pointed out that switching valve can be aerotron, thyristor etc., as long as can be played.It is pointed out that described switching valve can be individual devices, also can be integrated in security monitoring CPU 12 or other chips.
Be understandable that, when functional safety fault appears in host CPU 11 system, security monitoring CPU 12 also can outwards send a high level signal by the switching valve of in entire car controller 1, and transmits described failure message.
By above-mentioned electronlmobil electric-control system, be applied to electronlmobil, the functional safety rank of electronlmobil electric-control system can be improved.
Particularly, a kind of electronlmobil safety failure information transmitting methods can be adopted.In the process, when entire car controller detects systemic-function Safe Failure fault, by CAN, failure message is sent to electric machine controller and battery management system, by one group of hard signal, failure message is sent to electric machine controller and battery management system simultaneously.
Preferably, described entire car controller comprises host CPU and security monitoring, described security monitoring CPU monitors the mode of operation of described host CPU, when functional safety fault appears in main CPU system, failure message is sent to electric machine controller and battery management system by described CAN and by described rigid line by described security monitoring CPU.
The present invention transmits at electronlmobil electric-control system functional safety failure message and in process, except carrying out failure message transmission by conventional CAN between multiple electric-control system, also increases the rigid line transmission channels of a faulty condition.When entire car controller detects systemic-function Safe Failure fault, by CAN, failure message electric machine controller and battery management system can be sent to, by one group of hard signal, failure message electric machine controller and battery management system can be sent to simultaneously.The benefit done like this is exactly, and any one goes wrong between the two for the CAN no matter between multiple controller system or fault rigid line transmission channels, still failure message directly can be transmitted other electronic controller systems.This method can improve the functional safety rank of system and the reliability of fault handling greatly.In addition, for improving the safety of electronlmobil core electric-control system, in entire car controller, have employed independently security monitoring CPU security monitoring is carried out to the main CPU system of entire car controller, and realizing the functional safety fault handling function of entire car controller.
Two functional safety fault delivery passages can realize failure-free and functional safety failure message be sent to the electric-control system be associated, and can guarantee the reliable delivery of the functional safety failure message of electronlmobil electric-control system and effectively raise the functional safety grade of system.
Electronlmobil electric-control system functional safety fault handling method of the present invention can realize: if when CAN communication between controller system lost efficacy, and can by rigid line failure message be passed to CCU system and carry out fault handling.If when hardware failure, can transmission failure message be carried out by CAN and allow CCU system carry out fault handling.
Finally it is to be noted: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit.Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (9)
1. an electronlmobil electric-control system, is characterized in that, comprising:
Entire car controller (1);
Electric machine controller (2);
Battery management system (3);
CAN (4), described entire car controller (1), electric machine controller (2) and battery management system (3) link together by it, and carry out information transmission, described information comprises failure message; And
Rigid line (5), it is connected between entire car controller (1) and electric machine controller (2), battery management system (3), for when entire car controller (1) detects systemic-function Safe Failure fault, by rigid line (5), failure message is sent to electric machine controller (2) and battery management system (3).
2. electronlmobil electric-control system as claimed in claim 1, it is characterized in that, described entire car controller (1) comprises host CPU (11) and security monitoring CPU (12), described security monitoring CPU (12) monitors the mode of operation of described host CPU (11), when functional safety fault appears in host CPU (11) system, failure message is sent to electric machine controller (2) and battery management system (3) by described CAN (4) and by described rigid line (5) by described security monitoring CPU (12).
3. electronlmobil electric-control system as claimed in claim 2, it is characterized in that, between the host CPU (11) of described entire car controller (1) and security monitoring CPU (12), carry out communication and security data exchange by spi bus (13).
4. electronlmobil electric-control system as claimed in claim 2, it is characterized in that, described entire car controller comprises a switching valve further, the security monitoring CPU (12) of described entire car controller (1) is connected with described rigid line (5) by described switching valve, when functional safety fault appears in described host CPU (11) system, described security monitoring CPU (12) exports a low level or high level by described switching valve to described rigid line (5).
5. an electronlmobil, is characterized in that, comprises the electronlmobil electric-control system according to any one of claim 1-4.
6. an electronlmobil safety failure information transmitting methods, it is characterized in that, when entire car controller detects systemic-function Safe Failure fault, by CAN, failure message is sent to electric machine controller and battery management system, by one group of hard signal, failure message is sent to electric machine controller and battery management system simultaneously.
7. electronlmobil safety failure information transmitting methods as claimed in claim 6, it is characterized in that, described entire car controller (1) comprises host CPU (11) and security monitoring CPU (12), described security monitoring CPU (12) monitors the mode of operation of described host CPU (11), when functional safety fault appears in host CPU (11) system, failure message is sent to electric machine controller (2) and battery management system (3) by described CAN (4) and by described rigid line (5) by described security monitoring CPU (12).
8. electronlmobil safety failure information transmitting methods as claimed in claim 7, it is characterized in that, between the host CPU (11) of described entire car controller (1) and security monitoring CPU (12), carry out communication and security data exchange by spi bus (13).
9. electronlmobil safety failure information transmitting methods as claimed in claim 7, it is characterized in that, described entire car controller comprises a switching valve further, the security monitoring CPU (12) of described entire car controller (1) is connected with described rigid line (5) by described switching valve, when functional safety fault appears in described host CPU (11) system, described security monitoring CPU (12) exports a low level or high level by described switching valve to described rigid line (5).
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| CN201410791046.XA CN104842903B (en) | 2014-12-18 | 2014-12-18 | A kind of electric automobile electric-control system, electric automobile and failure information delivery method |
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| CN106240493A (en) * | 2016-07-21 | 2016-12-21 | 安徽师范大学 | Electric automobile wire-controlled apparatus based on CAN |
| CN106601000A (en) * | 2015-10-20 | 2017-04-26 | 中国科学院微电子研究所 | New energy automobile electric control system and method |
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| CN111103128A (en) * | 2018-10-26 | 2020-05-05 | 上海汽车集团股份有限公司 | Fault type diagnosis method and device |
| CN113119885A (en) * | 2019-12-30 | 2021-07-16 | 观致汽车有限公司 | Vehicle control unit abnormality detection method for electric vehicle and electric vehicle |
| WO2022088080A1 (en) * | 2020-10-30 | 2022-05-05 | 华为技术有限公司 | Information transmission method, control apparatus, electromagnetic signal transceiver apparatus, and signal processing device |
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