CN104787038A - Diagnosis system and method for hybrid electric automobile with override control function - Google Patents
Diagnosis system and method for hybrid electric automobile with override control function Download PDFInfo
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- CN104787038A CN104787038A CN201510222547.0A CN201510222547A CN104787038A CN 104787038 A CN104787038 A CN 104787038A CN 201510222547 A CN201510222547 A CN 201510222547A CN 104787038 A CN104787038 A CN 104787038A
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- controller
- entire car
- car controller
- auto analyzer
- accelerator
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
Abstract
The invention discloses a diagnosis system and method for a hybrid electric automobile with the override control function. The diagnosis system comprises an engine controller, a clutch, a traction motor and an automatic gearbox. The clutch is connected between an output shaft of the engine controller and an input shaft of the traction motor. An output shaft of the traction motor and an input shaft of the automatic gearbox are connected. An output shaft of the automatic gearbox is connected with a rear axle of the automobile. The diagnosis system further comprises an automobile diagnosis instrument and a whole automobile controller. The automobile diagnosis instrument is in both-way communication with the whole automobile controller, the engine controller and a motor controller through a CAN bus, and the whole automobile controller is used for controlling separation and union of the clutch, gear selecting and shifting of the automatic gearbox and torque distributing of the motor controller. The diagnosis system is small in size and light in weight, an automobile 12 V or 24 V power source is directly adopted, an ordinary battery can be used for supplying power as well, and defects in the background sample are overcome.
Description
Technical field
The invention belongs to field of automobile electronic control, refer to a kind of the hybrid vehicle diagnostic system and the diagnostic method thereof that possess override control function particularly.
Background technology
Traditional Auto analyzer such as application number is CN201320784144, Auto analyzer described in the patent of CN201320695926 can realize read failure information, removes diagnostic code, read dynamic dataflow and display data stream and setting automotive diagnosis command function, but can not meet the automobile component diagnosis function of more complicated.
Hybrid vehicle because of its parts numerous, control logic is complicated, there is complicated functional verification, such as certain controller heat radiation electrical control electric fan is for energy-conservation consideration, be designed to only be greater than Temperature 1 (T1, such as 50 DEG C) aft-fan start working when sensor measurement enters controller outlet temperature.If current environmental temperature is far below T1, relevant relay is failure to actuate because no signal is given, cannot be confirmed to be caused by protective tube power-off or fan self damage.Conventional repair method is usually as follows:
Method 1 adopt external temperature Sensor Analog Relay System that controller is thought now temperature is greater than T1, but this method wiring is loaded down with trivial details and waste time and energy.
Method 2 adopts Auto-Sensing Mode, namely pressing vehicle rocker switch incoming signal makes vehicle enter maintenance or diagnosis debugging mode to entire car controller, controller sends the signal of different duty automatically, drive fan sends different wind-force, the method can continue 10-20 second, meet the simple maintenance of device, but this method is only only limitted to vehicle parking situation, the vehicle part maintenance under driving cycle cannot be covered.
Method 3 utilizes computer upper computer software or routine diagnosis instrument to change controller flash or E
2threshold parameter in ROM, such as, in above-mentioned example, outlet temperature is 20 DEG C, then fan open temp threshold value is set to 18 DEG C, fan work signal namely effectively, but the method exists part operation personnel leaks the situation of correct Parameter reconstruction, hidden danger is brought to product safety, and be only confined to adjust simple logic comparative parameter, complicated input/output function parameter forces demarcation to need to adjust Global Algorithm, very loaded down with trivial details and improper car inspection and maintenance librarian use, and notebook PC because of battery durable reason can not for a long time with car run, need configuration USB-CAN communication transition card in addition, vehicle temporary repair, scheduling and planning uses inconvenient.
Similar trouble diagnosing and debugging problem also have such as forward-reverse switching damage, battery cell voltage or temperature acquisition wire harness damage and cause monomer voltage or temperature acquisition to be reported to the police, this all needs this fault of make-up shielding to guarantee that vehicle short-term is normally run, and investigates this type of fault and far exceedes normal diagnostic instrument envelop of function.
Summary of the invention
The object of the invention is to provide a kind of the hybrid vehicle diagnostic system and the diagnostic method thereof that possess override control function to overcome above-mentioned deficiency.
For achieving the above object, the technical solution used in the present invention is:
A kind of hybrid vehicle diagnostic system possessing override control function, comprise engine controller, power-transfer clutch, traction electric machine and Automatic Transmission, described power-transfer clutch is connected between the output shaft of engine controller and the input shaft of traction electric machine, the output shaft of described traction electric machine is connected with the input shaft of Automatic Transmission, the output shaft of described Automatic Transmission is connected with the back axle of vehicle, also comprise Auto analyzer and entire car controller, described Auto analyzer is by CAN and entire car controller, engine controller and electric machine controller intercommunication, described entire car controller combines for the separation of control clutch, the shifting of Automatic Transmission and the torque distribution of electric machine controller.
The invention has the beneficial effects as follows: except possessing information such as monitoring the operating motor speed of hybrid vehicle, current of electric, high voltage connector state, acceleration pedal aperture, random access memory (RAM) variable in other controllers can also be revised by CAN communication, make controller enter required logic or export corresponding logical variable, realize override control function; Disconnect Auto analyzer and other controller CAN communication, if do not restart CCU to control power supply, RAM parameter constant, continue to perform override control value; If restart controller controls power supply, RAM district reinitializes, and does not affect normal procedure and runs.Volume of the present invention is little, lightweight, directly adopts vehicle 12V or 24V power supply common batteries of also can using by oneself to power, avoids described in background example not enough.
Accompanying drawing explanation
Fig. 1 is diagnostic system structural representation of the present invention.
Fig. 2 is diagnostic method diagram of circuit of the present invention.
Detailed description of the invention
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment: a kind of hybrid vehicle diagnostic system possessing override control function of the present invention, comprise driving engine 3, engine controller 4, power-transfer clutch 5, traction electric machine 6, electric machine controller 7 and Automatic Transmission 8, described power-transfer clutch 5 is connected between the output shaft of driving engine 3 and the input shaft of traction electric machine 6, the output shaft of described traction electric machine 6 is connected with the input shaft of Automatic Transmission 8, the output shaft of described Automatic Transmission 8 is connected with the back axle 9 of vehicle, described traction electric machine 6 is connected with electric machine controller 7, also comprise Auto analyzer 1 and entire car controller 2, described Auto analyzer 1 is by CAN and entire car controller 2, engine controller 4 and electric machine controller 7 intercommunication, described entire car controller 2 respectively with engine controller 4, power-transfer clutch 5, electric machine controller 7 is connected with Automatic Transmission 8, described entire car controller 2 combines for the separation of control clutch 5, the shifting of Automatic Transmission 8 and the torque distribution of engine controller 4 and electric machine controller 7.
The present invention can also comprise electrokinetic cell 10 and the battery management system 11 for the information acquisition of responsible electrokinetic cell 10 and electrokinetic cell 10 equilibrium, described electrokinetic cell 10 is connected with electric machine controller 7, described electrokinetic cell 10 is responsible for powering to electric machine controller 7 and reclaiming its drag recuperated energy, and described Auto analyzer 1 realizes override control and information sharing by CAN and battery management system 11 intercommunication.
Wherein Auto analyzer 1 EC9374AZZ car model diagnostic equipment that Chang Tong Science and Technology Ltd. of Beijing Unionsun can be selected to produce; The VC21-13R48A model entire car controller that entire car controller 2 can select east wind Xiangyang este wagon Co., Ltd to produce; Battery management system 11 can select Beijing Hai Bosi to create the battery management system of the HS-100 model that Science and Technology Ltd. produces; The electric machine controller of the DKQ101 model that electric machine controller 7 can select Hunan Nanche Shidai Electric Vehicle Co., Ltd to produce, the engine controller of the Xtron-C32B model that engine controller 4 can select Shanghai Exon Power System Co., Ltd. to produce.
Auto analyzer 1 and CCU form the system possessing override control function.Wherein Auto analyzer 1 is made up of liquid crystal display, button and built-in control desk etc., both roughly the same the information such as the operating motor speed of electronlmobil, current of electric, engine coolant temperature, driver's acceleration pedal aperture, battery SOC and high voltage connector state can be monitored by other conventional vehicle diagnostic equipments, also the RAM variable in other controllers is revised by CAN communication, make controller enter required logic or export corresponding logical variable, realize override control function.
Auto analyzer 1 in the present invention can 24V or the 12V Power supply of external automobile, also can adopt the 5*1.2V powered battery carried, because volume is little, lightweight, avoids and uses the not enough inconvenience brought of cells in notebook computer continuation of the journey.This equipment can arrange software authority for vehicle control device service personnel, also can for user.
Set up CAN communication process driver acceleration pedal fault for Auto analyzer 1 and entire car controller 2 to illustrate.When entire car controller 2 normally runs, collection vehicle driver acceleration pedal aperture obtains driver driving and is intended to and distributes engine controller 3 and electric machine controller 7 target torque, when acceleration pedal because of power fail or the wiring of the pedal bad driver of causing bend the throttle own invalid time can adopt the present invention.
Debug flag position i.e. " flag_debug " structure global variable is comprised in entire car controller 2, be defaulted as when flag_debug family value is 0, the actual physical value that input variable is adopted self-sensor device observed reading or obtained by CAN from other controllers.Such as driver will speed up pedal and floors, and corresponding flag_debug structure variable flag_debug.accelerator=0, entire car controller thinks that current acceleration pedal aperture is 100%.When Auto analyzer 1 sets flag_debug family value flag_debug.accelerator=1 by CAN and entire car controller 2 communication, and given virtual acceleration pedal aperture " override value " i.e. override.accelerator=5%, even if now driver will speed up pedal and floors, but entire car controller 2 internal logic still thinks that now acceleration pedal aperture is 5%, if because of cause specific the CAN communication between Auto analyzer 1 and entire car controller 2 disconnected suddenly but still keep power supply not restart, entire car controller 2 still adopts override.accelerator value, namely still think that current driver's acceleration pedal aperture is 5%, if the now unexpected power-off of system or restart entire car controller 2, then the entire car controller 2 RAM parameter initialization that resets is as the criterion with actual acquisition value, when Auto analyzer 1 arranges flag_override.accelerator=0 by CAN and entire car controller 2 communication, entire car controller 2 internal logic recovers to be as the criterion with the numerical value that self gathers.In like manner, the input and output logical AND that comprises of engine controller 4 and electric machine controller 7 is roughly the same above-mentioned.
A kind of diagnostic method possessing the hybrid vehicle diagnostic system of override control function comprises the following steps:
Step 1: Auto analyzer 1 and entire car controller 2 complete own hardware initialization and CAN hardware initialization, and Auto analyzer 1 and entire car controller 2 internal processes store flash address initialization, the initialization of data space address ram;
Step 2: the CAN communication set up between Auto analyzer 1 and entire car controller 2 connects, recalls in entire car controller 2 address of variable, types of variables and the physical transformations mode file and A2L file that are applicable to Auto analyzer 1 and identify, and confirms that password is correct;
Step 3: Auto analyzer 1 reads the conventional parameter of entire car controller 2 according to A2L address file, as vehicle gear on-off status signal, guarantee Auto analyzer 1 and entire car controller 2 working properly;
Step 4: user operation Auto analyzer 1 enters override control menu, sends read/write memory instruction to entire car controller 2;
Step 5: entire car controller 2 receives the instruction that Auto analyzer 1 sends, and will the storage flash region duplication doing override control be needed to ram region;
Comprise and arrange the first pointer variable sensing source address and flash, the second pointer variable points to destination address, and pointer first pointer variable and the second pointer variable reduce with address length gauge number and synchronously increase progressively.
Step 6: Auto analyzer 1 carries out override control, comprise and recall debug flag structure variable flag_debug.accelerator, override settings override.accelerator, driver's acceleration pedal original value raw_accelerator, entire car controller is used for the acceleration pedal value accelerator of control policy.
If arrange flag_debug.accelerator=0, then accelerator=raw_accelerator
If arrange flag_debug.accelerator=1, then accelerator=override.accelerator
Step 7: the CAN communication disconnected between Auto analyzer 1 and entire car controller 2 connects, and override control function remains valid, only when reset entire car controller 2 or after restarting entire car controller 2 override control function exit.
The diagnostic system possessing this function can be applicable to as intake temperature, bar pressure, the input Logic judgment such as electric machine controller sample rate current, override value is utilized to substitute actual physical measurement value sensor in necessary occasion, and comparatively complicated logic export occasion as: high pressure pre-charge contactor does not close, can force to export precharge command, be convenient to search is caused by relay circuit damage or contactless switch self damage or pre-charge resistance damage, also can force to disconnect pre-charge contactor, without the need to adopting loaded down with trivial details wiring action.
If above-mentioned background example middle controller leaving water temperature is 20 DEG C, be 52 DEG C by Auto analyzer 1 override control controller detected temperatures, then controller thinks that Current Temperatures is 52 DEG C, and the fan being greater than 50 DEG C opens threshold value, fan running.Disconnect the CAN communication of Auto analyzer 1 and entire car controller 2 and restart RAM parameter in power-supply controller of electric and reinitialize, only having the electronic fan when true temperature is greater than 50 DEG C just can perform corresponding operating.
It may be noted that; override function of the present invention needs software design patterns associated rights, prevents override control by mistake, is relating to the fields such as the relevant motor speed of electric machine controller important safety control; can not use override control, partial parameters also needs de-preservation parameter to use.
Claims (4)
1. one kind possesses the hybrid vehicle diagnostic system of override control function, comprise driving engine, engine controller, power-transfer clutch, traction electric machine, electric machine controller and Automatic Transmission, described power-transfer clutch is connected between the output shaft of driving engine and the input shaft of traction electric machine, the output shaft of described traction electric machine is connected with the input shaft of Automatic Transmission, the output shaft of described Automatic Transmission is connected with the back axle of vehicle, described traction electric machine is connected with electric machine controller, it is characterized in that: also comprise Auto analyzer and entire car controller, described Auto analyzer is by CAN and entire car controller, engine controller and electric machine controller intercommunication, described entire car controller respectively with engine controller, power-transfer clutch, electric machine controller is connected with Automatic Transmission.
2. the hybrid vehicle diagnostic system possessing override control function according to claim 1, it is characterized in that: also comprise electrokinetic cell and the battery management system for controlling power battery information acquisition and dynamic balnce, described electrokinetic cell is connected with electric machine controller, and described Auto analyzer is by CAN and battery management system intercommunication.
3. the hybrid vehicle diagnostic system possessing override control function according to claim 1 and 2, the concrete steps of its diagnostic method are:
Step 1: Auto analyzer 1 and entire car controller 2 complete own hardware initialization and CAN hardware initialization, and Auto analyzer 1 and entire car controller 2 internal processes store flash address initialization, the initialization of data space address ram;
Step 2: the CAN communication set up between Auto analyzer 1 and entire car controller 2 connects, recalls in entire car controller 2 address of variable, types of variables and the physical transformations mode file and A2L file that are applicable to Auto analyzer 1 and identify, and confirms that password is correct;
Step 3: Auto analyzer 1 reads the conventional parameter of entire car controller 2 according to A2L address file, as vehicle gear on-off status signal, guarantee Auto analyzer 1 and entire car controller 2 working properly;
Step 4: user operation Auto analyzer 1 enters override control menu, sends read/write memory instruction to entire car controller 2;
Step 5: entire car controller 2 receives the instruction that Auto analyzer 1 sends, and will the storage flash region duplication doing override control be needed to ram region;
Step 6: Auto analyzer 1 carries out override control;
Step 7: the CAN communication disconnected between Auto analyzer 1 and entire car controller 2 connects, and override control function remains valid, only when reset entire car controller 2 or after restarting entire car controller 2 override control function exit.
4. the diagnostic method possessing the hybrid vehicle diagnostic system of override control function according to claim 3, described step 6 comprises: recall debug flag structure variable flag_debug.accelerator, override settings override.accelerator, driver's acceleration pedal original value raw_accelerator, entire car controller 2 is for the acceleration pedal value accelerator of control policy;
If arrange flag_debug.accelerator=0,
Then accelerator=raw_accelerator;
If arrange flag_debug.accelerator=1,
Then accelerator=override.Accelerator.
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| CN201510222547.0A CN104787038B (en) | 2015-04-30 | 2015-04-30 | Possesses the diagnostic method of the hybrid vehicle diagnostic system of override control function |
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| CN201510222547.0A CN104787038B (en) | 2015-04-30 | 2015-04-30 | Possesses the diagnostic method of the hybrid vehicle diagnostic system of override control function |
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| CN104787038B (en) | 2017-11-10 |
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Effective date of registration: 20220323 Address after: Building 3, Jinfeng Road, Dongfeng Automobile Avenue, high tech Zone, Xiangyang City, Hubei Province Patentee after: DONGFENG AUTOMOBILE Co.,Ltd. Address before: 1 No. 441004 Xiangfan city of Hubei Province City Automobile Industry Development Zone Avenue Patentee before: DONGFENG XIANGYANG TOURING CAR Co.,Ltd. |