CN111252080A - Method for realizing unexpected power-off protection processing of high-speed running of vehicle - Google Patents
Method for realizing unexpected power-off protection processing of high-speed running of vehicle Download PDFInfo
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- CN111252080A CN111252080A CN202010139412.9A CN202010139412A CN111252080A CN 111252080 A CN111252080 A CN 111252080A CN 202010139412 A CN202010139412 A CN 202010139412A CN 111252080 A CN111252080 A CN 111252080A
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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
- B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
- B60W50/029—Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
Abstract
The invention relates to a method for realizing accidental power-off protection processing of high-speed running of a vehicle, which respectively comprises the following processing procedures: the method comprises the following steps of carrying out power-off protection on a new energy automobile, carrying out power-off protection on the automatic power-off protection of the traditional automobile, and carrying out power-off protection on the manual power-off protection of the traditional automobile. By adopting the method for realizing the accidental power-off protection processing of the high-speed running of the vehicle, the situations of failure of power-assisted steering, failure of a braking system and the like of the vehicle can be caused when the controller accidentally receives a power-off command during the high-speed running of the vehicle. The invention protects the working condition, ensures that the power-assisted steering and braking system is still in an effective state after the controller receives a power-off command when the vehicle runs at high speed, ensures that the vehicle has certain operability, and effectively protects the life safety and property safety of a driver.
Description
Technical Field
The invention relates to the field of vehicle machinery, in particular to the field of accidental power-off protection of automobiles, and particularly relates to a method for realizing accidental power-off protection processing during high-speed running of a vehicle.
Background
The existing control strategy does not judge the vehicle speed after receiving the power-off command, and the controller performs power-off processing on the vehicle after receiving the power-off command. When the vehicle runs at a high speed, the vehicle is out of control (such as power steering failure) or irreversible damage (such as IGBT explosion) is caused to vehicle components, which is caused by the fact that the vehicle is powered down immediately after the power-down command is triggered accidentally, so that special protection control is required to avoid loss.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the method for realizing the accidental power-off protection processing of the vehicle during high-speed running, which has the advantages of strong operability, high sensitivity and wider application range.
In order to achieve the above object, the method for implementing unexpected power-off protection processing for high-speed driving of a vehicle of the present invention comprises:
the method for realizing the unexpected power-off protection processing of the high-speed running of the vehicle is mainly characterized by comprising the following processing procedures:
treatment process (1): powering off the new energy automobile for protection;
treatment process (2): the power-off protection is carried out on the traditional automobile automatic gear power-off protection;
treatment process (3): the power-off protection is carried out on the power-off protection of the traditional automobile manual gear;
the treatment process (1) specifically comprises the following steps:
the new energy automobile enters an emergency standby mode after detecting a power-off instruction, and normal high-low voltage power supply of the automobile is maintained, so that the steering and braking of the automobile are maintained in an available state;
the treatment process (2) specifically comprises the following steps:
the traditional automobile automatic gear enters an emergency standby mode after detecting a power-off instruction, the gear is automatically switched to a neutral gear, the working state of an engine is maintained, and the functions of a power-assisted steering and braking system are maintained in an effective state;
the treatment process (3) specifically comprises the following steps:
the traditional automobile manual gear enters an emergency stop mode after detecting a power-off instruction, extinguishes an engine, and maintains the functions of the power-assisted steering and braking system in an effective state.
Preferably, the processing procedure (1) is specifically as follows:
(1-1) judging whether the detector detects a power-off command when the vehicle runs at a high speed, and if so, continuing to the step (1-2); otherwise, continuing the step (1-1);
(1-2) the transmission system enters an emergency standby mode and exits from a starting state;
(1-3) judging whether the vehicle speed is less than the preset vehicle speed, if so, entering a normal current lower process of the whole vehicle, and exiting the step; otherwise, continuing the step (1-4);
(1-4) judging whether a power-on instruction is received again, if so, continuing to the step (1-5); otherwise, continuing the step (1-3);
(1-5) judging whether the current gear is a neutral gear, if so, recovering the function of the power system and recovering the starting state; otherwise, the power system maintains the standby state, the vehicle does not return to the starting state, and the power is not turned off, and the ignition request is responded after the vehicle speed is lower than the preset vehicle speed.
Preferably, the current flow in the step (1-3) is specifically:
and (3) turning off the enabling signal of the high-voltage component, cutting off the high-voltage power supply of the component after delaying for proper time, and powering down the controllers in sequence.
Preferably, the processing procedure (2) is specifically as follows:
(2-1) judging whether the detector detects a power-off command when the vehicle runs at a high speed, and if so, continuing the step (2-2); otherwise, continuing the step (2-1);
(2-2) enabling the transmission system to enter an emergency standby mode, and switching the gear to a neutral position;
(2-3) judging whether a power-on instruction is received again, if so, stopping the vehicle, then not performing power-off processing, and continuing to the step (2-4); otherwise, carrying out power-off treatment after parking, and continuing the step (2-4);
(2-4) judging whether the vehicle speed is less than the preset vehicle speed, and if so, turning off the engine; otherwise, continuing to the step (2-3).
Preferably, the processing procedure (3) is specifically as follows:
(3-1) judging whether the detector detects a power-off command when the vehicle runs at a high speed, and if so, continuing to the step (3-2); otherwise, continuing the step (3-1);
(3-2) enabling the transmission system to enter an emergency stop mode, and extinguishing the engine;
(3-3) judging whether a power-on instruction is received again, if so, not carrying out power-off processing on the whole vehicle after parking; otherwise, the whole vehicle is powered off after parking.
Preferably, the step of maintaining the power steering function in the active state includes:
before the vehicle is powered off, the power assisting system is maintained to normally supply power, the enabling signal is always effective, and locking processing is not carried out.
Preferably, the step of maintaining the brake system function in the active state includes:
and before the vehicle is powered off, the normal power supply of the brake system is maintained, and the enable signal is enabled all the time.
Preferably, the step of detecting a power-down command comprises directly turning off a vehicle key.
Preferably, the emergency standby mode includes maintaining an idle operating mode.
Preferably, the preset vehicle speed is a motor speed.
Preferably, the preset vehicle speed is an ABS vehicle speed.
By adopting the method for realizing the accidental power-off protection processing of the high-speed running of the vehicle, the situations of failure of power-assisted steering, failure of a braking system and the like of the vehicle can be caused when the controller accidentally receives a power-off command during the high-speed running of the vehicle. The invention protects the working condition, ensures that the power-assisted steering and braking system is still in an effective state after the controller receives a power-off command when the vehicle runs at high speed, ensures that the vehicle has certain operability, and effectively protects the life safety and property safety of a driver.
Drawings
Fig. 1 is a high-speed unexpected power-off control flow chart of the new energy automobile according to the method for realizing the high-speed unexpected power-off protection processing of the automobile.
Fig. 2 is a flowchart illustrating a conventional automatic transmission high-speed unexpected power-off control method of the present invention for implementing a vehicle high-speed unexpected power-off protection process.
Fig. 3 is a flowchart illustrating a conventional vehicle manual gear high-speed unexpected power-off control method for implementing the vehicle high-speed unexpected power-off protection processing according to the present invention.
Detailed Description
In order to more clearly describe the technical contents of the present invention, the following further description is given in conjunction with specific embodiments.
The method for realizing the unexpected power-off protection processing of the high-speed running of the vehicle comprises the following processing procedures:
treatment process (1): the method for protecting the new energy automobile comprises the following steps:
the new energy automobile enters an emergency standby mode after detecting a power-off instruction, and normal high-low voltage power supply of the automobile is maintained, so that the steering and braking of the automobile are maintained in an available state; the method specifically comprises the following steps:
(1-1) judging whether the detector detects a power-off command when the vehicle runs at a high speed, and if so, continuing to the step (1-2);
otherwise, continuing the step (1-1);
(1-2) the transmission system enters an emergency standby mode and exits from a starting state;
(1-3) judging whether the vehicle speed is less than the preset vehicle speed, if so, entering a normal current lower process of the whole vehicle, and exiting the step;
otherwise, continuing the step (1-4);
turning off the enabling signal of the high-voltage component, cutting off the high-voltage power supply of the component after delaying for proper time, and powering down the controllers in sequence;
(1-4) judging whether a power-on instruction is received again, if so, continuing to the step (1-5); otherwise, continuing the step (1-3);
(1-5) judging whether the current gear is a neutral gear, if so, recovering the function of the power system and recovering the starting state;
otherwise, the power system maintains the standby state, the vehicle does not recover the starting state and is not powered off, and the ignition request is responded after the vehicle speed is lower than the preset vehicle speed;
treatment process (2): protection of getting off the electricity is carried out traditional car automatic gear protection of getting off the electricity, specifically is:
the traditional automobile automatic gear enters an emergency standby mode after detecting a power-off instruction, the gear is automatically switched to a neutral gear, the working state of an engine is maintained, and the functions of a power-assisted steering and braking system are maintained in an effective state; the method specifically comprises the following steps:
(2-1) judging whether the detector detects a power-off command when the vehicle runs at a high speed, and if so, continuing the step (2-2); otherwise, continuing the step (2-1);
(2-2) enabling the transmission system to enter an emergency standby mode, and switching the gear to a neutral position;
(2-3) judging whether a power-on instruction is received again, if so, stopping the vehicle, then not performing power-off processing, and continuing to the step (2-4); otherwise, carrying out power-off treatment after parking, and continuing the step (2-4);
(2-4) judging whether the vehicle speed is less than the preset vehicle speed, and if so, turning off the engine; otherwise, continuing the step (2-3); treatment process (3): protection under the manual fender of traditional car is protected under the electricity, specifically is:
the traditional automobile manual gear enters an emergency stop mode after detecting a power-off instruction, extinguishes an engine and maintains the functions of a power-assisted steering and braking system in an effective state; the method specifically comprises the following steps:
(3-1) judging whether the detector detects a power-off command when the vehicle runs at a high speed, and if so, continuing to the step (3-2); otherwise, continuing the step (3-1);
(3-2) enabling the transmission system to enter an emergency stop mode, and extinguishing the engine;
(3-3) judging whether a power-on instruction is received again, if so, not carrying out power-off processing on the whole vehicle after parking; if not, then,
and (5) powering off the whole vehicle after parking.
As a preferred embodiment of the present invention, the step of maintaining the power steering function in the active state comprises: before the vehicle is powered off, the power assisting system is maintained to normally supply power, the enabling signal is always effective, and locking processing is not carried out.
As a preferred embodiment of the present invention, the step of maintaining the brake system function in the effective state specifically comprises: and before the vehicle is powered off, the normal power supply of the brake system is maintained, and the enable signal is enabled all the time.
As a preferred embodiment of the present invention, the step of detecting the power-off command includes directly turning off a vehicle key.
As a preferred embodiment of the present invention, the emergency standby mode includes a maintenance idle operation mode.
In a preferred embodiment of the present invention, the preset vehicle speed is a motor speed.
In a preferred embodiment of the present invention, the preset vehicle speed is an ABS vehicle speed.
In the specific implementation mode of the invention, when the vehicle runs at a high speed, if unexpected power-off occurs, such as the situation that a key switch is touched by mistake and the key switch is invalid, the controller executes power-off processing to cause the vehicle to be in an uncontrollable state or cause irreversible damage to vehicle parts, so that a driver is in an extremely dangerous state.
The new energy automobile: when the vehicle runs at a high speed, the vehicle controller receives a power-off command due to an unexpected reason, and immediately enters an emergency mode under the condition of no other fault information, so that the power system enters an emergency standby mode, normal high-low voltage power supply of the vehicle is maintained, the available state of steering and braking of the vehicle is ensured, power-off processing is carried out when the vehicle slides to a position below S1km/h, and a power-on request of a driver can be normally responded after power-off is finished. If the controller receives the power-on command when the vehicle is above S1km/h, whether the current gear is in the neutral gear is judged, if so, the function of the power system is recovered, the vehicle recovers Ready, the power operation requirement of a driver can be responded normally, if not, the emergency standby mode of the power system is maintained, the vehicle Ready is not recovered, and meanwhile, the power-off processing is not carried out.
Traditional car automatic gear: when the vehicle runs at a high speed, the vehicle controller receives a power-off command due to an unexpected reason, and immediately enters an emergency mode under the condition of no other fault information, so that the transmission system enters an emergency standby mode, the gear is automatically switched to a neutral gear, the working state of an engine is maintained, and the functions of the power-assisted steering and braking system are ensured to be in an effective state. And (4) turning off the engine when the vehicle slides to the position below S1km/h, and entering the normal power-off process of the whole vehicle when the vehicle stops. And if the power-on instruction is received again in the process of coasting, the engine is turned off after the vehicle coasts to the speed of S1km/h, and the vehicle is not powered off after the vehicle stops. If the vehicle has no other fault information after parking, the ignition request can be responded normally.
Manual fender of tradition car: when the vehicle runs at a high speed, the vehicle controller receives a power-off command due to an unexpected reason, and immediately enters an emergency mode under the condition of no other fault information, so that the transmission system enters an emergency stop mode, an engine is turned off, and the functions of the power-assisted steering and braking system are ensured to be in an effective state. And entering a normal power-off process of the whole vehicle after the vehicle stops. And if the power-on instruction is received again in the sliding process, the vehicle is not powered off after the vehicle stops. If the vehicle has no other fault information after parking, the ignition request can be responded normally.
The invention discloses a method for protecting a new energy automobile from unexpected power failure during high-speed running, which comprises the following steps of:
(1-1) detecting a power-off command by a controller when the vehicle runs at a high speed;
(1-2) the vehicle falls off Ready, and the transmission system enters an emergency standby mode;
(1-3) judging whether the vehicle speed is less than S1km/h, and if the vehicle speed is less than S1km/h, entering a normal power-off process of the whole vehicle; if the ratio is more than S1km/h, the step 1-4 is carried out;
(1-4) judging whether a power-on instruction is received again, and if the power-on instruction is not received, entering the step 3; entering the step 1-5 when the power-on instruction is received again;
(1-5) judging whether the current gear is a neutral gear, if so, recovering the function of a power system and recovering the Ready of the vehicle; if not, entering the step 1-6;
(1-6) the powertrain maintains a standby state, the vehicle does not resume Ready, and is not powered down, but can respond normally to a key ignition request when the vehicle speed is below S1 km/h.
The invention discloses a method for protecting accidental power-off of a traditional vehicle in automatic high-speed driving, which comprises the following steps:
(2-1) the controller detects a power-off command when the vehicle runs at a high speed;
(2-2) the vehicle transmission system enters an emergency standby mode, and the gear is switched to a neutral gear;
(2-3) judging whether a power-on instruction is received again, if the power-on instruction is not received, stopping the vehicle, and then performing power-off processing, and if the power-on instruction is received, stopping the vehicle, and then not performing power-off processing;
(2-4) judging whether the vehicle speed is less than S1km/h, if the vehicle speed is less than S1km/h, turning off the engine, otherwise, entering the step 2-2.
The invention discloses a method for protecting accidental power-off of a traditional vehicle in high-speed driving by a manual gear, which comprises the following steps:
(3-1) detecting a power-off command by a controller when the vehicle runs at a high speed;
(3-2) the vehicle transmission system enters an emergency stop mode, and an engine is extinguished;
and (3-3) judging whether the power-on instruction is received again, stopping the vehicle and then performing power-off processing if the power-on instruction is not received, and stopping the vehicle and then not performing power-off processing if the power-on instruction is received.
The following are specific examples of the present invention:
example 1: the controller detects a power down command while the vehicle is traveling at high speeds, which includes, but is not limited to, directly turning off the vehicle keys.
Example 2: the controller causes the power system to enter an emergency standby mode including, but not limited to, setting to maintain idle operation.
Example 3: and judging whether the current vehicle speed is lower than S1km/h, wherein the new energy vehicle comprises but is not limited to judging the motor speed, and the traditional vehicle comprises but is not limited to judging the ABS vehicle speed. The specific vehicle speed node S1 may be set to 2, 3, 4, 5, 6 according to the specific vehicle type.
Example 4: a determination is made as to whether the power-up command has been re-received, including but not limited to re-opening the vehicle key.
Example 5: the vehicle carries out a normal power-off processing flow, the new energy automobile needs to turn off the enabling signal of the high-voltage component, the high-voltage power supply of the component is cut off after delaying for a proper time, and finally each controller is powered off in sequence.
Example 6: the power-assisted steering is guaranteed to be in an effective state, the normal power supply of a power-assisted system needs to be maintained before the power of a vehicle is cut off, an enabling signal is effective all the time, and locking processing cannot be carried out.
Example 7: the brake system is guaranteed to be in an effective state, the brake system needs to be maintained to normally supply power before the vehicle is powered off, and the enabling signal is always effective.
By adopting the method for realizing the accidental power-off protection processing of the high-speed running of the vehicle, the situations of failure of power-assisted steering, failure of a braking system and the like of the vehicle can be caused when the controller accidentally receives a power-off command during the high-speed running of the vehicle. The invention protects the working condition, ensures that the power-assisted steering and braking system is still in an effective state after the controller receives a power-off command when the vehicle runs at high speed, ensures that the vehicle has certain operability, and effectively protects the life safety and property safety of a driver.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (11)
1. A method for realizing the unexpected power-off protection processing of vehicle high-speed driving is characterized by comprising the following processing procedures:
treatment process (1): powering off the new energy automobile for protection;
treatment process (2): the power-off protection is carried out on the traditional automobile automatic gear power-off protection;
treatment process (3): the power-off protection is carried out on the power-off protection of the traditional automobile manual gear;
the treatment process (1) specifically comprises the following steps:
the new energy automobile enters an emergency standby mode after detecting a power-off instruction, and normal high-low voltage power supply of the automobile is maintained, so that the steering and braking of the automobile are maintained in an available state;
the treatment process (2) specifically comprises the following steps:
the traditional automobile automatic gear enters an emergency standby mode after detecting a power-off instruction, the gear is automatically switched to a neutral gear, the working state of an engine is maintained, and the functions of a power-assisted steering and braking system are maintained in an effective state;
the treatment process (3) specifically comprises the following steps:
the traditional automobile manual gear enters an emergency stop mode after detecting a power-off instruction, extinguishes an engine, and maintains the functions of the power-assisted steering and braking system in an effective state.
2. The method for realizing the unexpected power-off protection processing for the high-speed running of the vehicle according to claim 1, wherein the processing procedure (1) is specifically as follows:
(1-1) judging whether the detector detects a power-off command when the vehicle runs at a high speed, and if so, continuing to the step (1-2); otherwise, continuing the step (1-1);
(1-2) the transmission system enters an emergency standby mode and exits from a starting state;
(1-3) judging whether the vehicle speed is less than the preset vehicle speed, if so, entering a normal current lower process of the whole vehicle, and exiting the step; otherwise, continuing the step (1-4);
(1-4) judging whether a power-on instruction is received again, if so, continuing to the step (1-5); otherwise, continuing the step (1-3);
(1-5) judging whether the current gear is a neutral gear, if so, recovering the function of the power system and recovering the starting state; otherwise, the power system maintains the standby state, the vehicle does not return to the starting state, and the power is not turned off, and the ignition request is responded after the vehicle speed is lower than the preset vehicle speed.
3. The method for realizing the unexpected power-off protection processing for the high-speed running of the vehicle according to claim 2, wherein the normal power-off course in the step (1-3) is specifically:
and (3) turning off the enabling signal of the high-voltage component, cutting off the high-voltage power supply of the component after delaying for proper time, and powering down the controllers in sequence.
4. The method for realizing the unexpected power-off protection processing for the high-speed running of the vehicle according to claim 1, wherein the processing procedure (2) is specifically as follows:
(2-1) judging whether the detector detects a power-off command when the vehicle runs at a high speed, and if so, continuing the step (2-2); otherwise, continuing the step (2-1);
(2-2) enabling the transmission system to enter an emergency standby mode, and switching the gear to a neutral position;
(2-3) judging whether a power-on instruction is received again, if so, stopping the vehicle, then not performing power-off processing, and continuing to the step (2-4); otherwise, carrying out power-off treatment after parking, and continuing the step (2-4);
(2-4) judging whether the vehicle speed is less than the preset vehicle speed, and if so, turning off the engine; otherwise, continuing to the step (2-3).
5. The method for realizing the unexpected power-off protection processing for the high-speed running of the vehicle according to claim 1, wherein the processing procedure (3) is specifically as follows:
(3-1) judging whether the detector detects a power-off command when the vehicle runs at a high speed, and if so, continuing to the step (3-2); otherwise, continuing the step (3-1);
(3-2) enabling the transmission system to enter an emergency stop mode, and extinguishing the engine;
(3-3) judging whether a power-on instruction is received again, if so, not carrying out power-off processing on the whole vehicle after parking; otherwise, the whole vehicle is powered off after parking.
6. The method for achieving unexpected power-off protection processing for high-speed driving of a vehicle according to claim 1, wherein the step of maintaining the power steering function in an effective state is specifically as follows:
before the vehicle is powered off, the power assisting system is maintained to normally supply power, the enabling signal is always effective, and locking processing is not carried out.
7. The method for realizing the unexpected power-off protection processing for the high-speed running of the vehicle as claimed in claim 1, wherein the step of maintaining the brake system function in the effective state is specifically as follows:
and before the vehicle is powered off, the normal power supply of the brake system is maintained, and the enable signal is enabled all the time.
8. The method for performing vehicle high speed unexpected power down protection processing as claimed in claim 1, wherein said step of detecting a power down command comprises directly turning off a vehicle key.
9. The method as claimed in claim 1, wherein the emergency standby mode includes maintaining an idle running mode.
10. The method for achieving unexpected power-off protection processing for high-speed driving of a vehicle according to claim 2, wherein the preset vehicle speed is a motor speed.
11. The method for implementing the unexpected power-off protection processing for high-speed driving of the vehicle as claimed in claim 4, wherein the preset vehicle speed is an ABS vehicle speed.
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| CN113386782A (en) * | 2021-06-30 | 2021-09-14 | 东风汽车集团股份有限公司 | Forced power-off control method in vehicle driving process |
| CN115447664A (en) * | 2022-09-05 | 2022-12-09 | 摩登汽车有限公司 | Control method of electric steering power-assisted system during emergency power-off |
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Application publication date: 20200609 |