CN110281772A

CN110281772A - Fault handling method, device, central control system and the electric car of electric car

Info

Publication number: CN110281772A
Application number: CN201910279939.9A
Authority: CN
Inventors: 彭江; 南富乾; 黄大飞; 欧祖方; 郑登磊
Original assignee: Chongqing Jinkang Power New Energy Co Ltd
Current assignee: Chongqing Jinkang Power New Energy Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2019-09-27
Anticipated expiration: 2039-04-09
Also published as: CN110281772B

Abstract

This application involves a kind of fault handling method of electric car, device, central control system and electric cars.It include: the subsystem operation information for obtaining electric car；According to the subsystem operation information of electric car, the complete vehicle fault grade of electric car is determined；According to the complete vehicle fault grade of electric car, the drive mode of electric car is adjusted.The application can be avoided the problem of electric car processing result inaccuracy, guarantee that the extent of damage of electric car is preferably minimized, and guarantee the personal safety of the driver and passenger in electric car.

Description

Fault handling method, device, central control system and the electric car of electric car

Technical field

This application involves electric vehicle engineering field, in particular to a kind of fault handling method of electric car, device, in Control system and electric car.

Background technique

With the continuous development of automotive engineering, the new-energy automobile based on motor driven starts to be connect by more and more people By this is also grown rapidly electric car industry.With the development of electric car, the driving of electric car is also by before Single motor driving gradually development be multi-motor driving.Single motor drives the development to multi-motor driving also along with driving part Increase so that electric car break down probability it is also higher and higher, the requirement to the troubleshooting of electric car is also more next It is higher.

The troubleshooting technology of traditional electric car uses the fault message for directly acquiring electric car, and then according to electricity The fault message of electrical automobile carries out the adjustment of driving method to electric car.

However, the fault message that the troubleshooting technology of traditional electric car obtains is more rough, can not accurately determine Therefore the specific failure cause of electric car is handled, there are processing results using failure of the traditional technology to electric car The problem of inaccuracy.

Summary of the invention

Based on this, it is necessary in view of the above technical problems, provide the fault handling method of electric car a kind of, device, in Control system and electric car.

A kind of fault handling method of electric car, which comprises

Obtain the subsystem operation information of electric car；

According to the subsystem operation information of the electric car, the complete vehicle fault grade of the electric car is determined；

According to the complete vehicle fault grade of the electric car, the drive mode of the electric car is adjusted.

The subsystem operation information according to the electric car in one of the embodiments, determine described in The complete vehicle fault grade of electric car, comprising:

According to the subsystem operation information of the electric car, the subsystem fault etc. of the electric car is determined Grade；

According to the subsystem fault grade of the electric car and default subsystem fault grade and default vehicle The corresponding relationship of fault level determines the complete vehicle fault grade of the electric car.

The default subsystem fault grade includes critical failure grade, catastrophe failure etc. in one of the embodiments, Grade, adjustable running fault level and limitation operation troubles grade；

The subsystem operation information according to the electric car, determines the subsystem fault of the electric car Grade, including sequence execute following steps:

If the subsystem operation information includes collision information, it is determined that the subsystem fault grade is the fatal event Hinder grade；

If the subsystem operation information includes serious dynamical system fault message, it is determined that the subsystem fault grade For the catastrophe failure grade；

If the subsystem operation information includes general dynamical system fault message, it is determined that the subsystem fault grade For the adjustable running fault level；

If the subsystem operation information includes limitation operation troubles information, it is determined that the subsystem fault grade is institute State limitation operation troubles grade.

In one of the embodiments, the default complete vehicle fault grade include critical failure grade, catastrophe failure grade, Adjustable running fault level and limitation operation troubles grade；Wherein, the critical failure grade, the catastrophe failure grade, The severity of the adjustable running fault level and the limitation operation troubles grade successively reduces；

It is described according to the subsystem fault grade of the electric car and default subsystem fault grade and default The corresponding relationship of complete vehicle fault grade, determines the complete vehicle fault grade of the electric car, including by described subsystem fault etc. The fault level of most serious is determined as the complete vehicle fault grade in grade.

The subsystem includes front motor and rear motor in one of the embodiments,；Drive mode includes the first high pressure Lower power mode；

The complete vehicle fault grade according to the electric car, adjusts the drive mode of the electric car It is whole, comprising:

If the complete vehicle fault grade is equal to the adjustable running fault level, the failure etc. of the front motor is obtained The fault level of grade and the rear motor；

If the front motor and the equal fault-free of the rear motor generate electric switching signal under the first high pressure；

According to switching signal electric under first high pressure, the drive mode is adjusted under first high pressure electric mould Formula.

Drive mode includes front motor drive mode in one of the embodiments,；

The method also includes:

If the fault level of the front motor fault-free and the rear motor is equal to the adjustable running fault level, Generate the first driving switching signal；

According to the first driving switching signal, the drive mode is adjusted to the front motor drive mode.

Drive mode includes rear motor drive mode in one of the embodiments,；

The method also includes:

If the fault level of motor fault-free and the front motor is equal to the adjustable running fault level after described, Generate the second driving switching signal；

According to the second driving switching signal, motor drive mode after the drive mode is adjusted to described.

Drive mode includes power mode under the second high pressure in one of the embodiments,；

If the complete vehicle fault grade is equal to the catastrophe failure grade, electric switching signal under the second high pressure is generated；

According to switching signal electric under second high pressure, the drive mode is adjusted under second high pressure electric mould Formula.

Drive mode includes power mode under third high pressure in one of the embodiments,；

If the complete vehicle fault grade is equal to the critical failure grade, electric switching signal under third high pressure is generated；

The entire car controller is adjusted to described the according to switching signal electric under the third high pressure, by the drive mode Power mode under three high pressures.

Drive mode includes limitation operational mode in one of the embodiments,；

If the complete vehicle fault grade is equal to the limitation operation troubles grade, limitation operation switching signal is generated；

Switching signal is run according to the limitation, the drive mode is adjusted to the limitation operational mode.

Drive mode includes power mode and the under power mode, the second high pressure under the first high pressure in one of the embodiments, Power mode under three high pressures；Wherein, the corresponding power of power mode allows the time under each high pressure, and the power allows the time to use In after determining the complete vehicle fault grade of the electric car, waiting the power to allow the time, later to the electricity The drive mode of electrical automobile is adjusted；Wherein, under first high pressure under power mode, second high pressure power mode and The corresponding power of power mode allows the time different under the third high pressure.

The corresponding power of power mode allows the time to be greater than described second under first high pressure in one of the embodiments, The corresponding power of power mode allows the time under high pressure, and the corresponding power of power mode allows the time to be greater than described under second high pressure The corresponding power of power mode allows the time under third high pressure.

A kind of fault treating apparatus of electric car, described device include:

Data obtaining module, for obtaining the subsystem operation information of electric car；

Fault determination module determines the electronic vapour for the subsystem operation information according to the electric car The complete vehicle fault grade of vehicle；

Drive control module, for the complete vehicle fault grade according to the electric car, to the electric car Drive mode is adjusted.

The fault determination module in one of the embodiments, for the subsystem according to the electric car Operation information determines the complete vehicle fault grade of the electric car, comprising:

Drive mode includes front motor drive mode and rear motor drive mode in one of the embodiments,；

Described device further include:

If the fault level of the front motor fault-free and the rear motor is equal to the adjustable running fault level, Generate the first driving switching signal；According to the first driving switching signal, the drive mode is adjusted to the front motor Drive mode；

If the fault level of motor fault-free and the front motor is equal to the adjustable running fault level after described, Generate the second driving switching signal；According to the second driving switching signal, motor after the drive mode is adjusted to described Drive mode.

A kind of central control system of electric car, including memory and processor, the memory are stored with computer program, The step of processor realizes above-mentioned any one the method when executing the computer program.

A kind of storage medium is stored thereon with computer program, realizes when the computer program is executed by processor The step of stating any one the method.

A kind of electric car, the electric car include above-mentioned central control system.

Fault handling method, device, central control system and the electric car of above-mentioned electric car, by obtaining electric car Subsystem operation information further according to the subsystem operation information of electric car, determines the complete vehicle fault etc. of electric car Grade, finally according to the complete vehicle fault grade of electric car, is adjusted the drive mode of electric car, can accurately know electricity The fault condition of electrical automobile is adjusted the drive mode of electric car based on exact fault condition, avoids electronic vapour The problem of vehicle processing result inaccuracy, can guarantee that the extent of damage of electric car is preferably minimized, and guarantee in electric car Driver and passenger personal safety.

Detailed description of the invention

Fig. 1 is the flow diagram of the fault handling method of electric car in one embodiment；

Fig. 2 is the flow diagram of the refinement step of step 200 in one embodiment；

Fig. 3 is the flow diagram of the refinement step of step 201 in one embodiment；

Fig. 4 is the flow diagram of the refinement step of step 202 in one embodiment；

Fig. 5 is the flow diagram of the refinement step of step 300 in one embodiment；

Fig. 6 is the flow diagram of electric car drive mode method of adjustment in a specific embodiment；

Fig. 7 is the structural block diagram of the fault treating apparatus of electric car in one embodiment；

Fig. 8 is the internal structure chart of the central control system of electric car in one embodiment.

Specific embodiment

It is with reference to the accompanying drawings and embodiments, right in order to which the objects, technical solutions and advantages of the application are more clearly understood The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not For limiting the application.

It is understood that term " first " used in this application, " second " etc. can be used to describe herein various signals And modes relationships, but these signals and modes relationships should not be limited by these terms.These terms are only used to by a signal and mould Formula relationship is distinguished with another signal and modes relationships.

In one embodiment, as shown in Figure 1, providing a kind of fault handling method of electric car, including following step It is rapid:

Step 100, the subsystem operation information of electric car is obtained.

In the present embodiment, the subsystem of electric car refers to running for auxiliary electric vehicle complete vehicle, collects electronic vapour Vehicle operation data or the system for realizing certain function.Optionally, the subsystem of electric car includes barometric pressure sensor, pedal Sensor, active air-inlet grille, accelerator pedal, brake pedal, electric expansion valve (Electronic Expansion Valve, EXV), liquid level sensor, positive temperature coefficient (Positive Temperature Coefficient, PTC) thermistor, air-conditioning Compressor, triple valve, four-way valve, vacuum pressure sensor, vacuum pump, electronic water pump, brake pedal, selector, battery management System (Battery Management System, BMS), electric machine controller (Motor Control Unit, MCU).

Wherein, the subsystem operation information of electric car refers to the work of the subsystems of electric car in the process of running Data information.For example, information, the actual temp data of vehicle subsystem and pressure data that whether electric car collides Deng.

Step 200, according to the subsystem operation information of electric car, the complete vehicle fault grade of electric car is determined.

Wherein, the foundation of complete vehicle fault grade classification is influence journey of each subsystem operating condition to traffic safety performance Degree, electric car different sub-systems operation information correspond to different complete vehicle fault grades.

Step 300, according to the complete vehicle fault grade of electric car, the drive mode of electric car is adjusted.

Wherein, influence of the different complete vehicle fault grades to travel safety is different, according to different complete vehicle fault grades pair The influence that travel safety generates, can targetedly be adjusted the drive mode of electric car, refine troubleshooting Mode.

The fault handling method of above-mentioned electric car, by obtaining the subsystem operation information of electric car, further, According to the subsystem operation information of electric car, the complete vehicle fault grade of electric car is determined, finally according to the whole of electric car Vehicle fault level is adjusted the drive mode of electric car, can accurately know the fault condition of electric car, based on true The fault condition cut is adjusted the drive mode of electric car, avoids the problem of electric car processing result inaccuracy, It can guarantee that the extent of damage of electric car is preferably minimized, and guarantee the personal safety of the driver and passenger in electric car.

In one of the embodiments, as shown in Fig. 2, being the flow diagram of the refinement step of step 200, according to electronic The subsystem operation information of automobile determines the complete vehicle fault grade of electric car, specifically includes the following steps:

Step 201, according to the subsystem operation information of electric car, the subsystem fault grade of electric car is determined.

Wherein, the foundation of subsystem fault grade classification is influence degree of each subsystem to traffic safety performance, electronic Automobile different sub-systems operation information corresponds to different subsystem fault grades.

Step 202, according to the subsystem fault grade of electric car and default subsystem fault grade and default vehicle The corresponding relationship of fault level determines the complete vehicle fault grade of electric car.

Wherein, the corresponding relationship of default subsystem fault grade and default complete vehicle fault grade is stored in electric car, After determining subsystem fault grade, complete vehicle fault grade can be further determined that according to preset corresponding relationship.

In above-described embodiment, the subsystem fault of electric car can be determined by the subsystem operation information of electric car Grade further according to the corresponding relationship of default subsystem fault grade and default complete vehicle fault grade, accurately knows electricity The fault condition of electrical automobile avoids electric car from determining inaccuracy, careful problem.

In one of the embodiments, as shown in figure 3, the flow diagram of the refinement step for step 201, wherein pre- If subsystem fault grade includes critical failure grade, catastrophe failure grade, adjustable running fault level and limitation operation event Hinder grade, specifically includes the following steps:

Step 2011, if subsystem operation information includes collision information, it is determined that subsystem fault grade is critical failure Grade.

In electric car operational process, once detect that serious collision occurs for electric car, no matter then electric car Whether there is also other fault messages, then immediately determine that subsystem fault grade is critical failure grade.

Step 2012, if subsystem operation information includes serious dynamical system fault message, it is determined that subsystem fault etc. Grade is catastrophe failure grade.

In electric car operational process, electric car is not detected, serious collision occurs, but detect electric car Serious dynamical system fault message, no matter then whether there is also general dynamical system fault message or limitation operations for electric car Subsystem fault grade is determined as catastrophe failure grade by fault message

Step 2013, if subsystem operation information includes general dynamical system fault message, it is determined that subsystem fault etc. Grade is adjustable running fault level.

In electric car operational process, electric car is not detected, serious collision occurs, electronic vapour is also not detected Serious dynamical system failure occurs for vehicle, but detects general dynamical system failure, no matter then whether there is also limitations for electric car Subsystem fault grade is determined as adjustable running fault level by operation troubles information.

Step 2014, if subsystem operation information includes limitation operation troubles information, it is determined that subsystem fault grade is Limit operation troubles grade.

In electric car operational process, limitation operation troubles information is only detected, it is determined that subsystem fault grade is Limit operation troubles grade.

Subsystem fault grade classification can be critical failure by the influence according to subsystem fault to traffic safety performance Grade, catastrophe failure grade, adjustable running fault level and limitation operation troubles grade.Wherein, critical failure grade indicates Severe crash occurs, there are fatal influences for operation of the severe crash to electric car, or there are biggish security risks, no It, need to lower electricity parking immediately suitable for continuing to run；Catastrophe failure grade indicates dynamical system catastrophe failure, and catastrophe failure is to electronic vapour There are serious influences for the operation of vehicle, or there are biggish security risk, are unsuitable for continuing to run, but can rely on self power System realizes that power stops in short-term；Adjustable running fault level indicates the general dynamical system failure of generation, can be by adjusting drive The failure of dynamic mode operation；Fault restriction grade indicates that the failure occurred is irrecoverable, has a great impact to driving safety, with Drive continue, fault level may upgrade, and need to limit speed, power and the torque of electric car, such as with driving Continue, the temperature of malfunctioning sub-system will continue to increase, and cause progression of failure.Optionally, according to failure to the shadow of train operation performance The relationship of sound, fault restriction grade can also be subdivided into restorability minor failure, minor failure and generic failure.Wherein, can restore Property minor failure indicate occur failure can slightly restore, be via power up, it is lower electricity resetting or fault-tolerant processing after can guarantee vehicle continue Safety traffic, does not limit power；Minor failure, it is irrecoverable, it is not had much influence to operation is driven, but with driving time Continue, for example, the temperature of malfunctioning sub-system may increase, then fault level can rise, therefore, need to occur minor failure When restricted speed, power and torque；Generic failure, it is irrecoverable, to drive operation do not have much influence, but with drive when Between continue, for example, the temperature of malfunctioning sub-system may increase, then fault level can rise, therefore, need to occur it is general therefore Restricted speed, power and torque when barrier.

In above-described embodiment, critical failure grade, catastrophe failure grade, adjustable running event occur for electric car subsystem When hindering grade and limitation operation troubles grade, the influence to electric car operation is successively successively decreased, when judging fault level, from influence Catastrophe failure grade, adjustable running fault level and the limitation operation event that maximum critical failure grade is sequentially reduced to influence Barrier grade is judged that sub-system fault level is divided, and can be realized the accurate positionin to fault message.

Preset in one of the embodiments, complete vehicle fault grade include critical failure grade, it is catastrophe failure grade, adjustable Whole operation troubles grade and limitation operation troubles grade；Wherein, critical failure grade, catastrophe failure grade, adjustable running event Barrier grade and the severity for limiting operation troubles grade successively reduce；

According to the subsystem fault grade of electric car and default subsystem fault grade and default complete vehicle fault grade Corresponding relationship, the complete vehicle fault grade of electric car is determined, including by the fault level of most serious in subsystem fault grade It is determined as complete vehicle fault grade.

It is alternatively possible to as shown in figure 4, the flow diagram of the refinement step for step 202, comprising the following steps:

Step 2021, if subsystem fault grade includes critical failure grade, it is determined that complete vehicle fault grade is fatal event Hinder grade.

In electric car operational process, once detect that electric car subsystem fault grade includes critical failure etc. Grade immediately determines that complete vehicle fault grade then no matter then whether there is also other failure grade informations for electric car subsystem to cause Order fault level.

Step 2022, if subsystem fault grade includes catastrophe failure grade, it is determined that complete vehicle fault grade is serious event Hinder grade.

In electric car operational process, it includes critical failure grade that electric car subsystem fault grade, which is not detected, But detect electric car subsystem fault grade include catastrophe failure grade, though then electric car subsystem whether also include Adjustable running fault level or limitation operation troubles grade fault message, i.e., be determined as catastrophe failure etc. for complete vehicle fault grade Grade

Step 2023, if subsystem fault grade includes adjustable running fault level, it is determined that complete vehicle fault grade is Adjustable running fault level.

In electric car operational process, it includes critical failure grade that electric car subsystem fault grade, which is not detected, Also it includes catastrophe failure grade that electric car subsystem fault grade, which is not detected, but detects electric car subsystem Fault level of uniting includes adjustable running fault level, no matter then whether electric car subsystem fault grade is also comprising limitation fortune Complete vehicle fault grade is determined as adjustable running fault level by row fault level.

Step 2024, if subsystem fault grade includes limitation operation troubles grade, it is determined that complete vehicle fault grade is limited Operation troubles grade processed.

In electric car operational process, only detecting electric car subsystem fault grade includes limitation operation troubles etc. Complete vehicle fault grade is then determined as limiting operation troubles grade by grade.

It is similar to the refinement step of step 201, it is according to subsystem fault in the embodiment of the present invention to traffic safety performance Influence, by complete vehicle fault grade classification be critical failure grade, catastrophe failure grade, adjustable running fault level and limitation Operation troubles grade.Wherein, critical failure grade indicates that severe crash occurs, and severe crash has the operation of electric car Fatal influence, or there are biggish security risk, be unsuitable for continuing to run, it need to lower electricity parking immediately；Catastrophe failure grade Indicate dynamical system catastrophe failure, there are serious influences on the operation of electric car for catastrophe failure, or there are biggish peaces Full hidden danger is unsuitable for continuing to run, but can realize that power stops in short-term by self power system；Adjustable running fault level It indicates that general dynamical system failure occurs, the failure that can be run by adjusting drive mode；Fault restriction grade indicates generation Failure is irrecoverable, has a great impact to driving safety, and with continuing for driving, fault level may upgrade, and needs to limit Speed, power and the torque of electric car, such as continue with driving, the temperature of malfunctioning sub-system will continue to increase, and cause Progression of failure.

In above-described embodiment, critical failure grade, catastrophe failure grade, adjustable running failure occur for electric automobile whole When grade and limitation operation troubles grade, the influence to electric car operation is successively successively decreased, when judging fault level, most from influence Catastrophe failure grade, adjustable running fault level and the limitation operation troubles that big critical failure grade is sequentially reduced to influence Grade is judged, is divided to complete vehicle fault grade, can be realized the accurate positionin to fault message.

In one of the embodiments, as shown in figure 5, the flow diagram of the refinement step for step 300, wherein son System includes front motor and rear motor；Drive mode includes power mode, front motor drive mode, rear motor driven under the first high pressure Under mode, the second high pressure under power mode, third high pressure power mode and limitation operational mode, step 300 specifically includes the following steps:

Step 301, if complete vehicle fault grade be equal to adjustable running fault level, obtain front motor fault level and The fault level of motor afterwards.

Step 302, if front motor and the equal fault-free of rear motor, electric switching signal under the first high pressure is generated；According to first Electric switching signal, is adjusted to power mode under the first high pressure for drive mode under high pressure.

Step 303, it if the fault level of front motor fault-free and rear motor is equal to adjustable running fault level, generates First driving switching signal；According to the first driving switching signal, drive mode is adjusted to front motor drive mode.

Step 304, it if the fault level of rear motor fault-free and front motor is equal to adjustable running fault level, generates Second driving switching signal；According to the second driving switching signal, drive mode is adjusted to rear motor drive mode.

Wherein, the antecedent condition that step 301 be execution step 302, step 303 and step 304 is executed, when meeting step After 301 condition, step 302, step 303 and step 304 are executed.It is to close between step 302, step 303 and step 304 side by side System, without sequencing.

Wherein, if complete vehicle fault grade is equal to adjustable running fault level, the fault level of front motor is obtained with after The fault level of motor.Further, judge whether complete vehicle fault grade is equal to default adjustable running fault level, if vehicle event Hinder grade and is equal to default adjustable running fault level.Further progress judgement, if front motor and the equal fault-free of rear motor, show Caused by the failure is neither be equal to default adjustable running fault level due to front motor, nor since rear motor is equal in advance If then generating electric signal under the first high pressure caused by adjustable running fault level, power mode under the first high pressure is executed, executes the There are a power to allow the time before power mode under one high pressure, which allows the time that can be 30 seconds.Judge the complete vehicle fault Whether grade is as caused by electrical fault: if the complete vehicle fault grade is to be equal to default adjustable fortune by front motor fault level The caused and rear motor fault-free of row fault level then generates the first driving switching signal, drive mode is adjusted to front motor Drive mode；If the complete vehicle fault grade is caused by being equal to default adjustable running fault level due to rear electrical fault grade And front motor fault-free, then the second driving switching signal is generated, drive mode is adjusted to rear motor drive mode.

Wherein, the first driving switching signal and the second driving switching signal include drive mode adjustment instruction, while also being wrapped Part limitation operation instruction is included, limitation operation instruction is used to indicate power, torque and the speed of limitation electric car.

Optionally, when executing power mode under high pressure, power keeps supply in 30 seconds, and electricity keeps to the side to stop under high pressure after 30 seconds Vehicle.When drive mode is adjusted to front motor drive mode, vehicle pattern switching to front motor drive mode, electric car it is each A torque processing module, cooling system etc. are all switched to front motor drive mode.Motor driven mould after drive mode is adjusted to When formula, vehicle pattern switching to rear motor drive mode, each torque processing module of electric car, cooling system etc. all switch To rear motor drive mode.

Step 305, if complete vehicle fault grade is equal to catastrophe failure grade, electric switching signal under the second high pressure is generated；Root According to switching signal electric under the second high pressure, drive mode is adjusted to power mode under the second high pressure.

Wherein, speed, power and the torque that electric car is limited when executing power mode under the second high pressure, when power allows Between reach after lower electricity parking.The power allows the time that can be 15 seconds.

Step 306, if complete vehicle fault grade is equal to critical failure grade, electric switching signal under third high pressure is generated；Root According to switching signal electric under third high pressure, drive mode is adjusted to power mode under third high pressure.

Wherein, power mode is power mode under urgent high pressure under third high pressure, and there is no power to permit for power mode under third high pressure Perhaps the time, it can be understood as power allows the time to be 0, i.e., once generating electric switching signal under third high pressure is immediately performed urgent height Depress power mode.

Optionally, drive mode includes electric mould under power mode under power mode, the second high pressure under the first high pressure and third high pressure Formula；Wherein, the corresponding power of power mode allows the time under each high pressure, and power allows the time for determining electric car Complete vehicle fault grade after, wait power allow the time, the drive mode of electric car is adjusted later；First high pressure The corresponding power of lower power mode, which allows the time to be greater than the corresponding power of power mode under the second high pressure, allows time, electricity under the second high pressure The corresponding power of mode, which allows the time to be greater than the corresponding power of power mode under third high pressure, allows the time.

Wherein, dynamic before being adjusted to the drive mode of electric car in the complete vehicle fault grade according to electric car Power allows the time, power mode under power mode and third high pressure under power mode, the second high pressure under the first high pressure according to performed by it Successively reduce.Optionally, it after generating electric switching signal under the first high pressure, executes under the first high pressure before power mode, it is one corresponding First power allows the time；After generating electric switching signal under the second high pressure, execute under the second high pressure before power mode, it is one corresponding Second power allows the time；After generating electric switching signal under third high pressure, execute under third high pressure before power mode, it is one corresponding Third power allows the time；Wherein, the first power, which allows the time to be greater than the second power, allows the time, and the second power allows the time big Allow the time in third power.

Step 307, if complete vehicle fault grade is equal to limitation operation troubles grade, limitation operation switching signal is generated；Root Switching signal is run according to limitation, drive mode is adjusted to limitation operational mode.

When complete vehicle fault grade is equal to preset limit operation troubles grade, indicate that the failure occurred is irrecoverable, the event Barrier grade has a great impact to driving safety, and with continuing for driving, fault level may upgrade, and need to limit electric car Speed, power and torque, such as continue with driving, the temperature of malfunctioning sub-system will continue to increase, and cause progression of failure. But the electric car limited under operating status can still be run.

Optionally, drive mode includes electric mould under power mode under power mode, the second high pressure under the first high pressure and third high pressure Formula；Wherein, the corresponding power of power mode allows the time under each high pressure, and power allows the time for determining electric car Complete vehicle fault grade after, wait power allow the time, the drive mode of electric car is adjusted later.

Optionally, the corresponding power of power mode allows the time corresponding greater than power mode under the second high pressure dynamic under the first high pressure Power allows the time, and the corresponding power of power mode allows the time to be greater than the corresponding power of power mode under third high pressure fair under the second high pressure Perhaps the time.

It is right according to the subsystem fault grade of the complete vehicle fault grade of electric car and electric car in above-described embodiment The drive mode of electric car is adjusted.Specific drive mode adjustment mode includes front motor drive mode, rear motor driven Under mode, the first high pressure under power mode, the second high pressure under power mode, third high pressure power mode and limitation operational mode.According to electricity The complete vehicle fault grade of electrical automobile and the subsystem fault grade of electric car, are adjusted correspondingly drive mode.It can It effectively avoids in the event of a failure, due to the emergency position inaccurate to malfunction, and leads to electricity parking under too early high pressure The generation of situation.

In a specific embodiment, as shown in fig. 6, for a kind of specific electric car drive mode method of adjustment Flow diagram.

Optionally, electric car subsystem fault grade and complete vehicle fault grade can be divided into critical failure grade, serious Fault level, adjustable running fault level and limitation operation troubles grade.Optionally, the influence according to failure to train operation performance Relationship, fault restriction grade can also be subdivided into restorability minor failure, minor failure and generic failure.Wherein, restorability Minor failure is via power up, can guarantee that vehicle continues to drive safely after lower electricity resetting or fault-tolerant processing, do not limit power；Slight event Barrier, it is irrecoverable, it is not had much influence to operation is driven, but continue with driving time, for example, the temperature of malfunctioning sub-system Degree may increase, then fault level can rise, therefore, need to when minor failure occurs restricted speed, power and torque；Generally Failure, it is irrecoverable, it is not had much influence to operation is driven, but continue with driving time, for example, malfunctioning sub-system Temperature may increase, then fault level can rise, therefore, need to when generic failure occurs restricted speed, power and torque.

Further, specific minimum in order to make it easy to understand, can indicate the fault level of specific minimum system with number The failure of system is divided into 1,2,3,4,5,6 etc. six grades.

1,2,3,4,5,6 etc. six grades indicate meaning it is as follows: 1 grade of expression restorability minor failure, be via power up, under It can guarantee that vehicle continues to drive safely after electricity resetting or fault-tolerant processing, do not limit power.2 grades of expression minor failures, it is irrecoverable, It is not had much influence to operation is driven.But with continuing for driving time, for example, the temperature of malfunctioning sub-system may rise Height, then fault level can rise to 3 grades.It therefore, need to restricted speed, power and torque (2 grades of calibration when 2 grades of failures occur Value).3 grades of expression generic failures, it is irrecoverable, it is not had much influence to operation is driven.But with continuing for driving time, example Such as, the temperature of malfunctioning sub-system may increase, then fault level can rise to 4 grades.Therefore, 3 grades of failure time limits need to occur Speed, power and torque (3 grades of calibration values) processed.4 grades of expression catastrophe failures need restricted speed, power and torque (4 grades of calibration Value), power interruption after 30 seconds, pulling over observing can go up high pressure after keeping to the side.If 4 grades of failures are drawn by one of electrical fault It rises, is then judged whether to be switched to single motor drive mode according to electrical fault grade.5 grades of expression dynamical system catastrophe failures, Vehicle section components enter failure mode, and restricted speed, power and torque (5 grades of calibration values), power interruption after 15 seconds is needed to keep to the side Parking cannot go up high pressure again.6 grades of expression critical failures collide lower electricity, stop immediately.Optionally, the failure of specific minimum system It further include 0 grade, 0 grade of expression fault-free.

It is as follows that subsystem fault grade and complete vehicle fault grade mapping table and fault level divide table:

Note: the Chinese translation and full name in English of table Chinese and English abbreviation are respectively as follows: entire car controller (Vehicle Control Unit, VCU)

In table, specific minimum system fault level can indicate that critical failure grade, specific minimum system failure occurs for 6 Grade can indicate generation catastrophe failure grade for 5, and specific minimum system fault level can indicate that adjustable running occurs for 4 Fault level, specific minimum system fault level can indicate that limitation operation troubles grade occurs for 1,2,3.

As shown in fig. 6, specific electric car drive mode adjustable strategies implementation are as follows: when the son for getting electric car After system operation information, the subsystem fault grade and vehicle of electric car are obtained according to the subsystem operation information of electric car Fault level.When complete vehicle fault grade is less than 4 grades, speed, power and the torque of electric car are limited, is continued to run.When whole When vehicle fault level is equal to 5 grades, speed, power and the torque of electric car are limited, lower electricity stops after power allows the time to reach Vehicle.The power allows the time that can be 15 seconds.When complete vehicle fault grade is equal to 6 grades, electricity parking under urgent high pressure.

When complete vehicle fault grade is equal to 4 grades, further judge that the complete vehicle fault grade is whether 4 grades be former by front motor Caused by barrier grade is 4 grades or rear electrical fault grade is 4 grades.If front motor fault level is 0 and rear electrical fault grade is 0, then speed, power and the torque of electric car are limited, the lower electricity parking after power allows reached for the time 30 seconds at this time can be again Upper high-voltage electricity, but exported without torque.Caused by complete vehicle fault grade is to be 4 grades as front motor fault level equal to 4 grades, and after Electrical fault grade is 0, then drive mode is adjusted to rear motor drive mode, limits speed, power and the torsion of electric car Square operation；When complete vehicle fault grade be equal to 4 grades be as after electrical fault grade be 4 grades caused by, and front motor fault level is 0, then drive mode is adjusted to front motor drive mode, limits speed, power and the torque operation of electric car.

When complete vehicle fault grade is equal to 4 grades and caused by being not due to above situation, then limit electric car speed, Power and torque, the lower electricity parking after power allows reached for the time 30 seconds, at this time can upper high-voltage electricity again, but exported without torque.

In one embodiment, as shown in fig. 7, providing a kind of fault treating apparatus of electric car, comprising: information obtains Modulus block 501, fault determination module 502 and drive control module 503, in which:

Data obtaining module 501, for obtaining the subsystem operation information of electric car；

Fault determination module 502 determines the vehicle event of electric car for the subsystem operation information according to electric car Hinder grade；

Drive control module 503, for the complete vehicle fault grade according to electric car, to the drive mode of electric car into Row adjustment.

In one embodiment, fault determination module 502 is also used to execute the subsystem operation information according to electric car, Determine the subsystem fault grade of electric car；According to the subsystem fault grade of electric car and default subsystem fault The corresponding relationship of grade and default complete vehicle fault grade determines the complete vehicle fault grade of electric car.

In one embodiment, if it includes collision information that fault determination module 502, which is also used to execute subsystem operation information, Then determine that subsystem fault grade is critical failure grade；If subsystem operation information includes serious dynamical system fault message, Then determine that subsystem fault grade is catastrophe failure grade；If subsystem operation information includes general dynamical system fault message, Then determine that subsystem fault grade is adjustable running fault level；If subsystem operation information includes limitation operation troubles letter Breath, it is determined that subsystem fault grade is limitation operation troubles grade.

In one embodiment, fault determination module 502 is also used to execute most serious in the subsystem fault grade Fault level be determined as the complete vehicle fault grade.

In one embodiment, if fault determination module 502 is also used to execute complete vehicle fault grade and is equal to adjustable running Fault level then obtains the fault level of front motor and the fault level of rear motor；If front motor and the equal fault-free of rear motor, Generate electric switching signal under the first high pressure；According to switching signal electric under the first high pressure, drive mode is adjusted under the first high pressure Power mode.

In one embodiment, if fault determination module 502 is also used to execute the failure of front motor fault-free and rear motor Grade is equal to adjustable running fault level, then generates the first driving switching signal；According to the first driving switching signal, will drive Mode adjustment is front motor drive mode.

In one embodiment, if fault determination module 502 is also used to execute the failure of rear motor fault-free and front motor Grade is equal to adjustable running fault level, then generates the second driving switching signal；According to the second driving switching signal, will drive Mode adjustment is rear motor drive mode.

In one embodiment, if fault determination module 502 is also used to execute complete vehicle fault grade and is equal to catastrophe failure etc. Grade then generates electric switching signal under the second high pressure；According to switching signal electric under the second high pressure, it is high that drive mode is adjusted to second Depress power mode.

In one embodiment, if fault determination module 502 is also used to execute complete vehicle fault grade and is equal to critical failure etc. Grade then generates electric switching signal under third high pressure；According to switching signal electric under third high pressure, drive mode is adjusted to third height Depress power mode.

In one embodiment, if fault determination module 502 is also used to execute complete vehicle fault grade and is equal to limitation operation event Hinder grade, then generates limitation operation switching signal；Switching signal is run according to limitation, drive mode is adjusted to limitation operation mould Formula.

In one embodiment, drive control module 503 is also used to execute in the vehicle for determining the electric car After fault level, waits the power to allow the time, the drive mode of the electric car is adjusted later.

In one embodiment, it is corresponding dynamic to be also used to judge to execute power mode under the first high pressure for drive control module 503 Power, which allows the time to be greater than the corresponding power of power mode under the second high pressure, allows the time, and the corresponding power of power mode is permitted under the second high pressure Perhaps the time, which is greater than the corresponding power of power mode under third high pressure, allows the time.

The specific of fault treating apparatus about electric car limits the failure that may refer to above for electric car The restriction of processing method, details are not described herein.Modules in the fault treating apparatus of above-mentioned electric car can whole or portion Divide and is realized by software, hardware and combinations thereof.Above-mentioned each module can be embedded in the form of hardware or independently of electric car In processor in, can also be stored in a software form in the memory in electric car, in order to processor call execute The corresponding operation of above modules.

In one embodiment, a kind of central control system of electric car is provided, which can be server, Internal structure chart can be as shown in Figure 8.The central control system includes that the processor, memory, network connected by system bus connects Mouth and database.Wherein, the processor of the central control system is for providing calculating and control ability.The memory packet of the central control system Include non-volatile memory medium, built-in storage.The non-volatile memory medium is stored with operating system, computer program and data Library.The built-in storage provides environment for the operation of operating system and computer program in non-volatile memory medium.It is controlled in this The database of system is used to store the failure handling data of electric car.The network interface of the central control system is used for and external end End passes through network connection communication.A kind of troubleshooting side of electric car is realized when the computer program is executed by processor Method.

It will be understood by those skilled in the art that structure shown in Fig. 8, only part relevant to application scheme is tied The block diagram of structure, does not constitute the restriction for the central control system being applied thereon to application scheme, and specific central control system can be with Including than more or fewer components as shown in the figure, perhaps combining certain components or with different component layouts.

In one embodiment, a kind of central control system of electric car, including memory and processor, memory are provided It is stored with computer program, processor performs the steps of when executing computer program

Obtain the subsystem operation information of electric car；

According to the subsystem operation information of electric car, the complete vehicle fault grade of electric car is determined；

According to the complete vehicle fault grade of electric car, the drive mode of electric car is adjusted.

In one embodiment, the son according to electric car is also performed the steps of when processor executes computer program System operation information determines the subsystem fault grade of electric car；According to the subsystem fault grade of electric car, and it is pre- If the corresponding relationship of subsystem fault grade and default complete vehicle fault grade determines the complete vehicle fault grade of electric car.

In one embodiment, if processor also performs the steps of subsystem operation information when executing computer program Include collision information, it is determined that subsystem fault grade is critical failure grade；If subsystem operation information includes serious power System failure information, it is determined that subsystem fault grade is catastrophe failure grade；If subsystem operation information includes general power System failure information, it is determined that subsystem fault grade is adjustable running fault level；If subsystem operation information includes limit Operation troubles information processed, it is determined that subsystem fault grade is limitation operation troubles grade.

In one embodiment, it also performs the steps of when processor executes computer program by the subsystem fault The fault level of most serious is determined as the complete vehicle fault grade in grade.

In one embodiment, if processor also performs the steps of complete vehicle fault grade etc. when executing computer program In adjustable running fault level, then the fault level of front motor and the fault level of rear motor are obtained；If front motor and equal nothing Failure then generates electric switching signal under the first high pressure；According to switching signal electric under the first high pressure, drive mode is adjusted to first Power mode under high pressure.

In one embodiment, if processor execute computer program when also perform the steps of front motor fault-free and The fault level of motor is equal to adjustable running fault level afterwards, then generates the first driving switching signal；It is cut according to the first driving Signal is changed, drive mode is adjusted to front motor drive mode.

In one embodiment, if processor also performed the steps of when executing computer program rear motor fault-free and The fault level of front motor is equal to adjustable running fault level, then generates the second driving switching signal；It is cut according to the second driving Signal is changed, drive mode is adjusted to rear motor drive mode.

In one embodiment, if processor also performs the steps of complete vehicle fault grade etc. when executing computer program In catastrophe failure grade, then electric switching signal under the second high pressure is generated；According to switching signal electric under the second high pressure, by drive mode It is adjusted to power mode under the second high pressure.

In one embodiment, if processor also performs the steps of complete vehicle fault grade etc. when executing computer program In critical failure grade, then electric switching signal under third high pressure is generated；According to switching signal electric under third high pressure, by drive mode It is adjusted to power mode under third high pressure.

In one embodiment, if processor also performs the steps of complete vehicle fault grade etc. when executing computer program In limitation operation troubles grade, then limitation operation switching signal is generated；Switching signal is run according to limitation, drive mode is adjusted To limit operational mode.

In one embodiment, it is also performed the steps of when processor executes computer program and is determining the electronic vapour After the complete vehicle fault grade of vehicle, the power is waited to allow the time, later to the driving mould of the electric car Formula is adjusted.

In one embodiment, power mode under the first high pressure is also performed the steps of when processor executes computer program Corresponding power, which allows the time to be greater than the corresponding power of power mode under the second high pressure, allows the time, and power mode is corresponding under the second high pressure Power allow the time to be greater than the corresponding power of power mode under third high pressure to allow the time.

In one embodiment, a kind of storage medium is provided, computer program is stored thereon with, computer program is located Reason device performs the steps of when executing

Obtain the subsystem operation information of electric car；

In one embodiment, it also performs the steps of when computer program is executed by processor according to electric car Subsystem operation information determines the subsystem fault grade of electric car；According to the subsystem fault grade of electric car, and The corresponding relationship of default subsystem fault grade and default complete vehicle fault grade, determines the complete vehicle fault grade of electric car.

In one embodiment, if also performing the steps of subsystem operation letter when computer program is executed by processor Breath includes collision information, it is determined that subsystem fault grade is critical failure grade；If subsystem operation information includes serious dynamic Force system fault message, it is determined that subsystem fault grade is catastrophe failure grade；If subsystem operation information includes general dynamic Force system fault message, it is determined that subsystem fault grade is adjustable running fault level；If subsystem operation information includes Limit operation troubles information, it is determined that subsystem fault grade is limitation operation troubles grade.

In one embodiment, it is also performed the steps of when computer program is executed by processor by the subsystem event The fault level of most serious is determined as the complete vehicle fault grade in barrier grade.

In one embodiment, if also performing the steps of complete vehicle fault grade when computer program is executed by processor Equal to adjustable running fault level, then the fault level of front motor and the fault level of rear motor are obtained；If front motor is with after The equal fault-free of motor then generates electric switching signal under the first high pressure；According to switching signal electric under the first high pressure, by drive mode tune Whole is power mode under the first high pressure.

In one embodiment, if also performing the steps of front motor fault-free when computer program is executed by processor And the fault level of rear motor is equal to adjustable running fault level, then generates the first driving switching signal；According to the first driving Drive mode is adjusted to front motor drive mode by switching signal.

In one embodiment, if also performing the steps of rear motor fault-free when computer program is executed by processor And the fault level of front motor is equal to adjustable running fault level, then generates the second driving switching signal；According to the second driving Drive mode is adjusted to rear motor drive mode by switching signal.

In one embodiment, if also performing the steps of complete vehicle fault grade when computer program is executed by processor Equal to catastrophe failure grade, then electric switching signal under the second high pressure is generated；According to switching signal electric under the second high pressure, mould will be driven Formula is adjusted to power mode under the second high pressure.

In one embodiment, if also performing the steps of complete vehicle fault grade when computer program is executed by processor Equal to critical failure grade, then electric switching signal under third high pressure is generated；According to switching signal electric under third high pressure, mould will be driven Formula is adjusted to power mode under third high pressure.

In one embodiment, if also performing the steps of complete vehicle fault grade when computer program is executed by processor Equal to limitation operation troubles grade, then limitation operation switching signal is generated；Switching signal is run according to limitation, by drive mode tune Whole is limitation operational mode.

In one embodiment, also performed the steps of when computer program is executed by processor determine it is described electronic After the complete vehicle fault grade of automobile, the power is waited to allow the time, later to the driving of the electric car Mode is adjusted.

In one embodiment, electric mould under the first high pressure is also performed the steps of when computer program is executed by processor The corresponding power of formula, which allows the time to be greater than the corresponding power of power mode under the second high pressure, allows time, power mode pair under the second high pressure The power answered, which allows the time to be greater than the corresponding power of power mode under third high pressure, allows the time.

Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer In read/write memory medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, To any reference of memory, storage, database or other media used in each embodiment provided herein, Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM (PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms, Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..

Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance Shield all should be considered as described in this specification.

The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.

Claims

1. a kind of fault handling method of electric car, which is characterized in that the described method includes:

Obtain the subsystem operation information of electric car；

2. the method according to claim 1, wherein described run according to the subsystem of the electric car Information determines the complete vehicle fault grade of the electric car, comprising:

According to the subsystem operation information of the electric car, the subsystem fault grade of the electric car is determined；

According to the subsystem fault grade of the electric car and default subsystem fault grade and default complete vehicle fault The corresponding relationship of grade determines the complete vehicle fault grade of the electric car；

Preferably, the default subsystem fault grade includes critical failure grade, catastrophe failure grade, adjustable running failure Grade and limitation operation troubles grade；

The subsystem operation information according to the electric car, determines the subsystem fault etc. of the electric car Grade, including sequence execute following steps:

If the subsystem operation information includes collision information, it is determined that the subsystem fault grade is described critical failure etc. Grade；

If the subsystem operation information includes serious dynamical system fault message, it is determined that the subsystem fault grade is institute State catastrophe failure grade；

If the subsystem operation information includes general dynamical system fault message, it is determined that the subsystem fault grade is institute State adjustable running fault level；

If the subsystem operation information includes limitation operation troubles information, it is determined that the subsystem fault grade is the limit Operation troubles grade processed；

Preferably, the default complete vehicle fault grade includes critical failure grade, catastrophe failure grade, adjustable running failure etc. Grade and limitation operation troubles grade；Wherein, the critical failure grade, the catastrophe failure grade, adjustable running event The severity of barrier grade and the limitation operation troubles grade successively reduces；

It is described according to the subsystem fault grade of the electric car and default subsystem fault grade and default vehicle The corresponding relationship of fault level determines the complete vehicle fault grade of the electric car, including will be in the subsystem fault grade The fault level of most serious is determined as the complete vehicle fault grade.

3. method described in -2 any one according to claim 1, which is characterized in that subsystem includes front motor and rear motor； Drive mode includes power mode under the first high pressure；

The complete vehicle fault grade according to the electric car, is adjusted the drive mode of the electric car, Include:

If the complete vehicle fault grade be equal to the adjustable running fault level, obtain the front motor fault level and The fault level of motor after described；

According to switching signal electric under first high pressure, the drive mode is adjusted to power mode under first high pressure；

Preferably, drive mode includes front motor drive mode；

The method also includes:

If the fault level of the front motor fault-free and the rear motor is equal to the adjustable running fault level, generate First driving switching signal；

According to the first driving switching signal, the drive mode is adjusted to the front motor drive mode；

Preferably, drive mode includes rear motor drive mode；

The method also includes:

If the fault level of motor fault-free and the front motor is equal to the adjustable running fault level after described, generate Second driving switching signal；

4. method according to claim 1 to 3, which is characterized in that drive mode includes electric mould under the second high pressure Formula；

According to switching signal electric under second high pressure, the drive mode is adjusted to power mode under second high pressure；

Preferably, drive mode includes power mode under third high pressure；

According to switching signal electric under the third high pressure, the drive mode is adjusted to power mode under the third high pressure；

Preferably, drive mode includes limitation operational mode；

5. method according to any of claims 1-4, which is characterized in that drive mode includes electric mould under the first high pressure Power mode under power mode and third high pressure under formula, the second high pressure；Wherein, the corresponding power of power mode allows under each high pressure Time, the power allow the time to be used for after determining the complete vehicle fault grade of the electric car, wait described dynamic Power allows the time, is adjusted later to the drive mode of the electric car；Wherein, electric mould under first high pressure Corresponding power allows the time different to power mode with power mode under the third high pressure under formula, second high pressure；

Preferably, the corresponding power of power mode allows the time corresponding greater than power mode under second high pressure under first high pressure Power allow the time, the corresponding power of power mode allows the time to be greater than power mode under the third high pressure under second high pressure Corresponding power allows the time.

6. a kind of fault treating apparatus of electric car, which is characterized in that described device includes:

Fault determination module determines the electric car for the subsystem operation information according to the electric car Complete vehicle fault grade；

Drive control module, the driving for the complete vehicle fault grade according to the electric car, to the electric car Mode is adjusted.

7. device according to claim 6, which is characterized in that the fault determination module, for according to the electronic vapour The subsystem operation information of vehicle, determines the complete vehicle fault grade of the electric car, comprising:

It is described according to the subsystem fault grade of the electric car and default subsystem fault grade and default vehicle The corresponding relationship of fault level determines the complete vehicle fault grade of the electric car, including will be in the subsystem fault grade The fault level of most serious is determined as the complete vehicle fault grade；

Preferably, drive mode includes front motor drive mode and rear motor drive mode；

Described device further include:

If the fault level of the front motor fault-free and the rear motor is equal to the adjustable running fault level, generate First driving switching signal；According to the first driving switching signal, the drive mode is adjusted to the front motor and is driven Mode；

If the fault level of motor fault-free and the front motor is equal to the adjustable running fault level after described, generate Second driving switching signal；According to the second driving switching signal, motor driven after the drive mode is adjusted to described Mode.

8. a kind of central control system of electric car, including memory and processor, the memory are stored with computer program, It is characterized in that, the processor realizes the step of any one of claims 1 to 5 the method when executing the computer program Suddenly.

9. a kind of storage medium, is stored thereon with computer program, which is characterized in that the computer program is executed by processor The step of method described in Shi Shixian any one of claims 1 to 5.

10. a kind of electric car, which is characterized in that the electric car includes central control system as claimed in claim 8.