CN107901762B - Electric automobile discharge failure processing method and system - Google Patents
Electric automobile discharge failure processing method and system Download PDFInfo
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- CN107901762B CN107901762B CN201711080475.6A CN201711080475A CN107901762B CN 107901762 B CN107901762 B CN 107901762B CN 201711080475 A CN201711080475 A CN 201711080475A CN 107901762 B CN107901762 B CN 107901762B
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a method and a system for processing the discharge failure of an electric automobile. The processing method comprises the following steps: a bleeding monitoring step of acquiring a bus voltage of a motor of the electric vehicle when the electric vehicle is powered off; a failure confirmation step of confirming whether the discharge function of the electric automobile fails or not by comparing the bus voltage obtained in the discharge monitoring step with a preset voltage; and safety protection, namely when the discharge function of the electric automobile fails, locking the front hatch cover. According to the method for processing the power-off discharge failure of the electric automobile, whether the discharge function of the electric automobile fails or not is confirmed by comparing the acquired bus voltage of the motor of the electric automobile with the preset voltage, and when the discharge function of the electric automobile fails, the front hatch cover of the motor is locked, related personnel are forbidden to open the front hatch cover, so that the related personnel are prevented from touching a high-voltage part, potential safety hazards caused by the failure of the discharge function are avoided, and the safety of the power-off process of the electric automobile is improved.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to a method and a system for processing the discharge failure of an electric automobile.
Background
The electric automobile is one of strategic emerging industries in China, and the electric automobile gradually replaces the traditional fuel automobile. Compared with the traditional fuel-oil automobile, the electric automobile has high voltage, so the high-voltage safety problem must be considered. When the automobile is powered off, the voltage of the high-voltage loop is reduced to be below the safe voltage by the capacitor voltage release function in the motor controller so as to prevent people from getting electric shock. Current electric automobile all possesses the high-voltage discharge function that pushes down, but to in case the back of inefficacy of releasing, electric automobile part spare part is in high-pressure state, appears the incident when causing personnel to touch.
Disclosure of Invention
In view of this, the invention provides a method and a system for processing a power-off discharge failure of an electric vehicle, and aims to solve the problem of safety accidents caused by the power-off discharge failure of the existing electric vehicle.
On one hand, the invention provides a processing method for the power-off discharge failure of an electric automobile, which comprises the following steps: a bleeding monitoring step of acquiring a bus voltage of a motor of the electric vehicle when the electric vehicle is powered off; a failure confirmation step of confirming whether the discharge function of the electric vehicle is failed or not by comparing the bus voltage obtained in the discharge monitoring step with a preset voltage corresponding to the bus voltage; and safety protection, namely locking a front hatch cover of the electric automobile when the discharge function of the electric automobile fails.
Further, in the discharge monitoring step, the bus voltage of the motor is collected in real time through a battery management system of the electric vehicle or a motor controller of the motor.
Further, in the discharge monitoring step, the bus voltage of the motor is acquired by acquiring a real-time signal of a voltage sensor of the motor.
Further, the electric vehicle power-off leakage failure processing method further includes, after the failure confirmation step: and a failure alarm step, when the bleeding function of the electric automobile fails, performing bleeding failure alarm and/or prompting and displaying on an instrument meter of the electric automobile.
Further, the electric vehicle power-off leakage failure processing method further includes, after the safety protection step: a failure maintenance step of confirming and eliminating a fault that a discharge function of the electric vehicle fails by maintaining the electric vehicle; and a releasing step of releasing the locking of the front hatch after the failure is confirmed and eliminated.
According to the processing method for the power-off discharge failure of the electric automobile, whether the discharge function of the electric automobile fails or not is confirmed by comparing the acquired bus voltage of the motor of the electric automobile with the corresponding preset voltage, and the front hatch cover of the motor is locked during the discharge function of the electric automobile, so that related personnel are prohibited to open the front hatch cover, and further the related personnel are prevented from touching a high-voltage component, therefore, potential safety hazards caused by the failure of the discharge function are avoided, and the safety of the power-off process of the electric automobile is improved.
Particularly, according to the processing method for the power-off leakage failure of the electric automobile, the leakage failure alarm is carried out or the instrument table of the electric automobile is reminded and displayed when the leakage function of the electric automobile fails, so that related personnel can be reminded of the failure of the leakage function, the related personnel can be reminded of not touching the high-voltage part of the electric automobile, and safety accidents are avoided.
Furthermore, the method for processing the power-off discharge failure of the electric automobile provided by the invention can be used for repairing the electric automobile to remove the fault of the discharge failure, so that the problem of the discharge function failure of the electric automobile is solved, and further, the safety accident caused by the discharge failure is avoided; meanwhile, the locking of the front hatch cover is released after the fault of discharge failure is eliminated, so that the subsequent use and maintenance of the electric automobile are facilitated.
In another aspect, the present invention provides a system for processing an electric vehicle power-off discharge failure, where the system includes: the leakage monitoring module is used for acquiring the bus voltage of a motor of the electric automobile when the electric automobile is powered off; the failure confirmation module is used for confirming whether the discharging function of the electric automobile fails or not by comparing the bus voltage acquired by the discharging monitoring module with the corresponding preset voltage; and the safety protection module is used for locking the front hatch cover of the electric automobile when the discharge function of the electric automobile fails.
Further, in the above electric vehicle power-off leakage failure processing system, the leakage monitoring module collects the bus voltage of the motor in real time through a battery management system of the electric vehicle or a motor controller of the motor.
Further, in the above electric vehicle power-off leakage failure processing system, the leakage monitoring module acquires the bus voltage of the motor by performing real-time signal acquisition on the voltage sensor of the motor.
Further, above-mentioned electric automobile is electric discharge failure processing system down, this processing system still includes: and the failure alarm module is used for alarming the leakage failure and/or prompting and displaying on an instrument meter of the electric automobile when the leakage function of the electric automobile fails.
Further, above-mentioned electric automobile is electric discharge failure processing system down, this processing system still includes: the failure maintenance module is used for confirming and eliminating the failure of the discharge function failure of the electric automobile by maintaining the electric automobile when the discharge function of the electric automobile fails; and the unlocking module is used for unlocking the front hatch cover after the fault is confirmed and eliminated.
Since the embodiment of the processing method has the above effects, the embodiment of the processing system also has corresponding technical effects.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic flow chart of a method for handling a power-off leakage failure of an electric vehicle according to an embodiment of the present invention;
fig. 2 is a block diagram of a structure of a system for processing an electric discharge failure of an electric vehicle according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The method comprises the following steps:
referring to fig. 1, which is a schematic flow chart of a method for processing an electric vehicle power-off leakage failure according to an embodiment of the present invention, the method includes the following steps:
in the bleed-off monitoring step S1, a bus voltage of the electric motor of the electric vehicle is acquired when the electric vehicle is powered off.
Specifically, when the electric vehicle is discharged, that is, when a driver or other operators turn a key of the electric vehicle to an OFF state when the electric vehicle is stopped, the entire vehicle starts to discharge, and a voltage sensor of the motor can be subjected to real-time signal acquisition through a BATTERY management system (BATTERY MANAGEMENT SYSTEM, BMS) of the electric vehicle or a motor controller of the electric vehicle, so that the bus voltage of the motor of the electric vehicle can be acquired in real time, and the real-time bus voltage of the motor can be acquired; in order to avoid that the bus voltage after discharging is not collected due to errors in data acquisition, preferably, the bus voltage can be collected before the electric vehicle starts to power off; the bus voltage CAN be collected through a CAN communication line or a hard line.
And a failure confirmation step S2, comparing the bus voltage obtained in the bleeding monitoring step with a preset voltage, and confirming whether the bleeding function of the electric automobile is failed.
Specifically, by comparing the bus voltage obtained in the bleeding monitoring step S1 with the preset voltage, when the bus voltage obtained in the bleeding monitoring step S1 is greater than the preset voltage or the difference between the bus voltage obtained in the bleeding monitoring step S1 and the preset voltage is greater than a threshold value, it is determined that the bleeding function of the electric vehicle is disabled; otherwise, the bus voltage obtained without the failure of the discharge function of the electric automobile is the safe voltage. The preset voltage and the threshold value can be determined according to actual conditions, and are not limited in this embodiment; as is well known to those skilled in the art, according to the national standard GBT 31498 of an electric vehicle, after the whole vehicle starts to discharge, the bus voltage is reduced to below 60V after 2 seconds of starting to discharge; therefore, preferably, the bus voltage of the whole vehicle at or after 2 seconds of starting discharging is compared with a preset voltage, the preset voltage is 60V, and if the bus voltage is greater than the preset voltage 60V, it is determined that the bleeding function of the electric vehicle is disabled.
And a failure alarm step S3, when the electric automobile has failed in the drainage function, performing drainage failure alarm and/or prompting and displaying on an instrument table of the electric automobile.
Specifically, when it is determined in the failure determination step S2 that the bleeding function of the electric vehicle is disabled, a bleeding failure alarm such as an audio alarm or flashing of an alarm lamp is performed, or a bleeding failure display is performed on an instrument panel of the electric vehicle, so as to remind a driver, a serviceman or others of the disabled bleeding function of the electric vehicle, and further remind the relevant persons of not touching a high-voltage component of the electric vehicle, thereby preventing a safety accident; of course, the leakage failure alarm and the display on the instrument meter of the electric automobile can be simultaneously carried out or can be reminded in one form; it is well known in the art that the instrument watch stops working after the electric vehicle enters the sleep state, so in order to prompt the display on the instrument watch, a reminder needs to be given before the electric vehicle enters the sleep state.
And a safety protection step S4, when the drainage function of the electric automobile fails, locking the front hatch of the electric automobile.
Specifically, in order to prevent the high voltage remaining in the controller of the electric motor from being touched by the relevant person, when it is confirmed in the failure confirmation step S2 that the bleeding function of the electric vehicle is failed, the front hatch of the electric vehicle is locked to avoid the opening of the front hatch of the electric vehicle; the locking of the front hatch cover can be implemented by parts such as a locking valve and the like so as to realize the prohibition of opening the front hatch cover; as is well known to those skilled in the art, an electric motor and a controller thereof of an electric vehicle are disposed under a front hatch of the electric vehicle, and locking of the front hatch prevents related personnel from touching high-voltage components such as the controller of the electric motor, thereby preventing safety accidents from occurring.
And a failure maintenance step S5, when the discharge function of the electric automobile fails, after the electric automobile is maintained, the failure of the discharge function failure is confirmed and eliminated.
Specifically, if the bleeding function of the electric vehicle is invalid, after the front hatch is locked in the safety protection step S4, the electric vehicle is maintained, and the fault that the bleeding function is invalid is confirmed and eliminated, so that the problem that the bleeding function of the electric vehicle is invalid is solved, and further, a safety accident caused by the bleeding function is avoided; in order to further improve the safety of the electric automobile, preferably, after the fault is eliminated, the fault is detected again to ensure the elimination of the fault; further preferably, the fault can be cleared by powering up and powering down the electric vehicle and collecting and comparing the bus voltage when powering down, so as to detect whether the fault is cleared, if the bus voltage is lower than a preset voltage.
And a lock releasing step S6, wherein after the failure maintenance step S5 confirms and eliminates the failure, the lock of the front hatch is released.
Specifically, after the failure of the bleed function is confirmed and eliminated in the failure maintenance step S5, the locking of the front hatch is released, thereby facilitating the subsequent use and maintenance of the electric vehicle.
Wherein, the failure alarm step S3 and the safety protection step S4 have no sequence.
Obviously, according to the method for processing the power-off discharge failure of the electric vehicle provided in this embodiment, whether the discharge function of the electric vehicle fails is determined by comparing the acquired bus voltage of the motor of the electric vehicle with the preset voltage, and when the discharge function of the electric vehicle is performed, the front hatch cover of the motor is locked, so that related personnel is prohibited to open the front hatch cover, and then the related personnel are prevented from touching the high-voltage component, so that the potential safety hazard caused by the failure of the discharge function is avoided, and the safety of the power-off process of the electric vehicle is improved.
In particular, according to the method for processing the power-off leakage failure of the electric vehicle provided in this embodiment, the leakage failure alarm is performed or the display is prompted on the instrument table of the electric vehicle when the leakage function of the electric vehicle fails, so as to prompt relevant personnel of the leakage failure, and further prompt the relevant personnel of the leakage failure not to touch the high-voltage component of the electric vehicle, thereby avoiding the occurrence of a safety accident.
Further, according to the method for processing the power-off discharge failure of the electric vehicle provided by the embodiment, the fault of the discharge failure is eliminated by maintaining the electric vehicle, so that the problem of the discharge function failure of the electric vehicle is solved, and further, a safety accident caused by the discharge failure is avoided; meanwhile, the locking of the front hatch cover is released after the fault of discharge failure is eliminated, so that the subsequent use and maintenance of the electric automobile are facilitated.
The embodiment of the system is as follows:
referring to fig. 2, which is a block diagram of a structure of a system for processing an electric vehicle power-off leakage failure according to an embodiment of the present invention, the system includes:
the leakage monitoring module 100 is used for acquiring a bus voltage of a motor of the electric automobile when the electric automobile is powered off;
the failure confirmation module 200 is configured to confirm whether the bleeding function of the electric vehicle is failed by comparing the bus voltage acquired by the bleeding monitoring module 100 with a preset voltage;
and the safety protection module 400 is used for locking the front hatch cover of the electric automobile when the drainage function of the electric automobile fails.
Preferably, the bleeding monitoring module collects the bus voltage of the motor in real time through a battery management system of the electric vehicle or a motor controller of the motor.
Preferably, the bleeding monitoring module acquires the bus voltage of the motor by performing real-time signal acquisition on a voltage sensor of the motor.
Preferably, the processing system further comprises: the failure alarm module 300 is used for alarming the leakage failure when the leakage function of the electric automobile fails and/or prompting and displaying on an instrument meter of the electric automobile.
Further preferably, the processing system further comprises: the failure maintenance module 500 is used for confirming and eliminating the failure of the discharge function failure of the electric automobile after the electric automobile is maintained when the discharge function of the electric automobile fails; an unlocking module 600 for unlocking the front hatch after the malfunction is confirmed and eliminated.
For specific implementation processes of the bleeding monitoring module 100, the failure confirmation module 200, and the safety protection module 300, reference may be made to the above method embodiments, and details of this embodiment are not repeated herein.
Since the embodiment of the processing method has the above effects, the embodiment of the processing system also has corresponding technical effects.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The method for processing the power-off discharge failure of the electric automobile is characterized by comprising the following steps:
a bleeding monitoring step of acquiring a bus voltage of a motor of the electric vehicle when the electric vehicle is powered off; collecting the bus voltage of the motor in real time through a battery management system of the electric automobile or a motor controller of the motor;
a failure confirmation step of confirming whether the discharge function of the electric vehicle is failed or not by comparing the bus voltage obtained in the discharge monitoring step with a preset voltage corresponding to the bus voltage; comparing the bus voltage obtained in the bleeding monitoring step with a preset voltage, and when the bus voltage obtained in the bleeding monitoring step is greater than the preset voltage or a difference value between the bus voltage obtained in the bleeding monitoring step and the preset voltage is greater than a threshold value, determining that the bleeding function of the electric automobile is invalid;
a safety protection step, namely locking a front hatch cover of the electric automobile when the discharge function of the electric automobile fails;
a failure maintenance step, namely, the electric automobile is maintained, the failure of the discharge function failure of the electric automobile is confirmed and eliminated, after the failure is eliminated, the electric automobile is powered on and powered off, and the bus voltage is collected and compared during the power off so as to detect whether the failure is eliminated, and if the bus voltage is lower than the preset voltage, the failure is eliminated;
and a locking releasing step of releasing the locking of the front deck lid after the failure maintenance step confirms and eliminates the failure.
2. The electric vehicle discharging leakage failure processing method according to claim 1, wherein in the leakage monitoring step,
the bus voltage of the motor is acquired by acquiring a real-time signal of a voltage sensor of the motor.
3. The electric vehicle discharging leakage failure processing method according to claim 1, further comprising, after the failure confirmation step:
and a failure alarm step of giving a discharge failure alarm when the discharge function of the electric vehicle fails.
4. The electric vehicle discharging leakage failure processing method according to claim 3,
in the failure alarm step, when the bleeding function of the electric automobile fails, a display is reminded on an instrument table of the electric automobile to alarm the bleeding failure.
5. The utility model provides an electric bleeding failure processing system under electric automobile which characterized in that includes:
the leakage monitoring module is used for acquiring the bus voltage of a motor of the electric automobile when the electric automobile is powered off; collecting the bus voltage of the motor in real time through a battery management system of the electric automobile or a motor controller of the motor;
the failure confirmation module is used for confirming whether the discharging function of the electric automobile fails or not by comparing the bus voltage acquired by the discharging monitoring module with the corresponding preset voltage; the failure confirmation module compares the bus voltage acquired by the bleeding monitoring module with a preset voltage, and confirms that the bleeding function of the electric automobile fails when the bus voltage acquired by the bleeding monitoring module is greater than the preset voltage or the difference value between the bus voltage acquired by the bleeding monitoring module and the preset voltage is greater than a threshold value;
the safety protection module is used for locking a front cabin cover of the electric automobile when the discharge function of the electric automobile fails;
the failure maintenance module is used for confirming and eliminating the failure of the discharge function failure of the electric automobile by maintaining the electric automobile when the discharge function of the electric automobile fails, powering on and powering off the electric automobile after the failure of the electric automobile is eliminated, collecting and comparing bus voltage when the electric automobile is powered off so as to detect whether the failure is eliminated, and if the bus voltage is lower than a preset voltage, eliminating the failure;
and the unlocking module is used for unlocking the front hatch cover after the fault is confirmed and eliminated.
6. The electric vehicle down current discharging failure processing system of claim 5,
the bleeding monitoring module acquires the bus voltage of the motor by acquiring a real-time signal of a voltage sensor of the motor.
7. The electric vehicle offboard discharge failure handling system of claim 5, further comprising:
and the failure alarm module is used for giving a discharge failure alarm when the discharge function of the electric automobile fails.
8. The electric vehicle down current bleed failure handling system of claim 7,
the failure alarm module is also used for reminding and displaying on an instrument meter of the electric automobile when the bleeding function of the electric automobile fails so as to give out a bleeding failure alarm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711080475.6A CN107901762B (en) | 2017-11-06 | 2017-11-06 | Electric automobile discharge failure processing method and system |
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| CN201711080475.6A CN107901762B (en) | 2017-11-06 | 2017-11-06 | Electric automobile discharge failure processing method and system |
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| CN107901762B true CN107901762B (en) | 2020-07-03 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109466331B (en) * | 2018-11-30 | 2020-12-22 | 广州小鹏汽车科技有限公司 | Vehicle-mounted high-voltage discharge and cover opening protection circuit system and method and electric vehicle |
| DE102019112522A1 (en) * | 2019-05-07 | 2020-11-12 | Schaeffler Technologies AG & Co. KG | Multi-phase voltage converter for a supply network and method for shutting down an intermediate circuit voltage of this supply network |
| CN113500946A (en) * | 2021-07-26 | 2021-10-15 | 长春一汽富晟集团有限公司 | New energy automobile maintenance electric shock prevention prompt system, method, equipment and storage medium |
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