CN108819719B - Discharging method and device for motor controller of new energy automobile - Google Patents
Discharging method and device for motor controller of new energy automobile Download PDFInfo
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- CN108819719B CN108819719B CN201810413416.4A CN201810413416A CN108819719B CN 108819719 B CN108819719 B CN 108819719B CN 201810413416 A CN201810413416 A CN 201810413416A CN 108819719 B CN108819719 B CN 108819719B
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- discharging
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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
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
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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
- B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
Abstract
The invention discloses a discharging method and a discharging device of a motor controller of a new energy automobile, wherein under a conventional discharging mode, discharging reliability and safety are ensured through discharging of an electric driving system and passive discharging; in the emergency discharge mode, reliable discharge is guaranteed through various ways of an electric drive system, an accessory module, a redundant discharge module and passive discharge, and the discharge ways are simultaneously realized as many as possible, so that the discharge time is shortened, and the personal safety is further guaranteed.
Description
The technical field is as follows:
the invention relates to the technical field of electric automobiles, in particular to a discharging method and a discharging device for a motor controller of a new energy automobile.
Background art:
and a motor controller, an electric power steering pump, an air compressor and the like of the new energy automobile are connected with the power battery in parallel through a direct current bus. The electric energy on the direct current bus is provided by a power battery, and a high-voltage relay is arranged at the end of the power battery. In order to meet the requirements of filtering and energy storage, a direct current supporting capacitor is always arranged at the bus end in the motor controller. When the high-voltage relay is disconnected and the power battery is separated from other components, the high voltage on the direct current bus can be kept for a period of time by the electric energy stored in the direct current support capacitor, and at the moment, the high-voltage electric energy needs to be released by adopting a reasonable method.
Most of the existing discharging methods have single path and long discharging time, and once an emergency occurs, the existing discharging methods may cause harm to personal safety.
The invention content is as follows:
the invention aims to provide a discharging method and a discharging device for a motor controller of a new energy automobile, which can ensure the reliability of high-voltage release of the motor controller under normal and emergency conditions through various ways.
The invention adopts the following technical scheme: a discharging method of a new energy automobile motor controller comprises the following steps:
the vehicle control unit selects to execute a conventional discharging mode or an emergency discharging mode by detecting the running state of the vehicle;
if the conventional discharging mode is executed, the battery management system controls the main relay to be disconnected and judges whether the main relay is successfully disconnected or not, and if the main relay is not disconnected, discharging is finished; if the main relay is disconnected, judging whether the electric drive system has a fault; if the electric drive system fails, reporting the electric drive system discharge failure and executing passive discharge; performing an electric drive system discharge if the electric drive system is fault-free; the vehicle control unit detects the voltage on the direct current bus and judges whether the voltage value of the bus is reduced to a set safe voltage range, if so, the discharging is finished; if not, continuing the discharging process until the discharging reaches the safe voltage range, and finishing the conventional discharging;
if the emergency discharging mode is executed, the battery management system controls the main relay to be disconnected and judges whether the main relay is successfully disconnected or not, and if the main relay is not disconnected, discharging is finished; if the main relay is disconnected, judging whether the electric drive system has a fault; if the electric drive system fails, judging whether the accessory module fails; if the electric drive system has no fault, executing electric drive system discharge and judging whether the accessory module has a fault, and if the accessory module has a fault, judging whether the redundant discharge module has a fault; if the accessory module has no fault, the accessory module is executed to discharge, whether the redundant discharge module has a fault or not is judged, if the redundant discharge module has a fault, the active discharge fault is reported, and the passive discharge is executed; if the redundant discharge module has no fault, the redundant discharge module is executed to discharge; the vehicle control unit detects the voltage on the direct current bus and judges whether the voltage value of the bus is reduced to a set safe voltage range, if so, the emergency discharge is finished; if not, the discharging process is continued until the discharging reaches the safe voltage range, and the emergency discharging is finished.
The invention also adopts the following technical scheme: the utility model provides a new energy automobile motor controller's discharge device, includes that electricity drives system, annex module, redundant discharge module and passive discharge resistance, electricity drives the system and includes motor controller and driving motor, and motor controller receives vehicle control unit's the instruction of discharging, discharges the electric quantity to the driving motor winding.
Further, the accessory module is composed of one or more of a DC/DC, an air conditioner compressor, an inflating pump motor and a power steering pump motor.
Further, the redundant discharge module is composed of a low-resistance high-power resistor.
The invention has the following beneficial effects: according to the discharging method of the new energy automobile motor controller, the discharging reliability and safety are guaranteed through discharging of the electric driving system and passive discharging in a conventional discharging mode; in the emergency discharge mode, reliable discharge is guaranteed through various ways of an electric drive system, an accessory module, a redundant discharge module and passive discharge, and the discharge ways are simultaneously realized as many as possible, so that the discharge time is shortened, and the personal safety is further guaranteed.
Description of the drawings:
FIG. 1 is a flow chart of a discharging method of a motor controller of a new energy automobile.
Fig. 2 is a schematic structural diagram of a discharging system of the motor controller of the new energy automobile.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings.
Fig. 1 is a flowchart of a discharging method of a new energy vehicle motor controller in an embodiment of the present invention, and referring to fig. 1, the discharging method of the new energy vehicle motor controller includes the following steps:
the vehicle control unit selects to execute a normal discharge mode or an emergency discharge mode by detecting the running state of the vehicle.
If the normal discharge mode is executed, the battery management system controls the main relay to be switched off and judges whether the main relay is switched off successfully. If the main relay is not disconnected, discharging is finished; and if the main relay is disconnected, judging whether the electric drive system has a fault. If the electric drive system fails, reporting the electric drive system discharge failure and executing passive discharge; if the electric drive system is fault-free, an electric drive system discharge is performed. The vehicle control unit detects the voltage on the direct current bus and judges whether the voltage value of the bus is reduced to a set safe voltage range, if so, the discharging is finished; if not, the discharging process is continued until the discharging reaches the safe voltage range, and the conventional discharging is finished.
If the emergency discharging mode is executed, the battery management system controls the main relay to be disconnected and judges whether the main relay is successfully disconnected. If the main relay is not disconnected, discharging is finished; and if the main relay is disconnected, judging whether the electric drive system has a fault. If the electric drive system fails, judging whether the accessory module fails; if the electric drive system is not faulty, an electric drive system discharge is performed and it is determined whether the accessory module is faulty. If the accessory module fails, judging whether the redundant discharge module fails; and if the accessory module has no fault, the accessory module is discharged, and whether the redundant discharge module has a fault is judged. If the redundant discharge module fails, reporting an active discharge failure and executing passive discharge; and if the redundant discharge module has no fault, performing the discharge of the redundant discharge module. The vehicle control unit detects the voltage on the direct current bus and judges whether the voltage value of the bus is reduced to a set safe voltage range, if so, the emergency discharge is finished; if not, the discharging process is continued until the discharging reaches the safe voltage range, and the emergency discharging is finished.
Fig. 2 is a schematic structural diagram of a discharging system of a motor controller of a new energy vehicle in the embodiment of the invention. As shown in fig. 2, the discharge system for implementing the discharge method of the present invention includes: the system comprises an electric drive system, an accessory module, a redundant discharge module and a passive discharge resistor. The electric driving system comprises a motor controller and a driving motor, wherein the motor controller receives a discharging instruction of the vehicle control unit and discharges electric quantity to a winding of the driving motor. The accessory module can be composed of one or more of a DC/DC, an air conditioner compressor, an inflating pump motor and a power steering pump motor according to actual needs. The redundancy discharge module consists of a low-resistance high-power resistor and is controlled by the vehicle controller to be connected or not.
According to the discharging method of the new energy automobile motor controller, the discharging reliability and safety are guaranteed through discharging of the electric driving system and passive discharging in a conventional discharging mode; in the emergency discharge mode, reliable discharge is guaranteed through various ways of an electric drive system, an accessory module, a redundant discharge module and passive discharge, and the discharge ways are simultaneously realized as many as possible, so that the discharge time is shortened, and the personal safety is further guaranteed.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (3)
1. The discharging method of the new energy automobile motor controller is dependent on a discharging device of the new energy automobile motor controller, the discharging device of the new energy automobile motor controller comprises an electric driving system, an accessory module, a redundant discharging module and a passive discharging resistor, the electric driving system comprises a motor controller and a driving motor, the motor controller receives a discharging instruction of a whole automobile controller, and discharges electric quantity to a winding of the driving motor, and the discharging method is characterized in that: the method comprises the following steps:
the vehicle control unit selects to execute a conventional discharging mode or an emergency discharging mode by detecting the running state of the vehicle;
if the conventional discharging mode is executed, the battery management system controls the main relay to be disconnected and judges whether the main relay is successfully disconnected or not, and if the main relay is not disconnected, discharging is finished; if the main relay is disconnected, judging whether the electric drive system has a fault; if the electric drive system fails, reporting the electric drive system discharge failure and executing passive discharge; performing an electric drive system discharge if the electric drive system is fault-free; the vehicle control unit detects the voltage on the direct current bus and judges whether the voltage value of the bus is reduced to a set safe voltage range, if so, the discharging is finished; if not, continuing the discharging process until the discharging reaches the safe voltage range, and finishing the conventional discharging;
if the emergency discharging mode is executed, the battery management system controls the main relay to be disconnected and judges whether the main relay is successfully disconnected or not, and if the main relay is not disconnected, discharging is finished; if the main relay is disconnected, judging whether the electric drive system has a fault; if the electric drive system fails, judging whether the accessory module fails; if the electric drive system has no fault, executing electric drive system discharge and judging whether the accessory module has a fault, and if the accessory module has a fault, judging whether the redundant discharge module has a fault; if the accessory module has no fault, the accessory module is executed to discharge, whether the redundant discharge module has a fault or not is judged, if the redundant discharge module has a fault, the active discharge fault is reported, and the passive discharge is executed; if the redundant discharge module has no fault, the redundant discharge module is executed to discharge; the vehicle control unit detects the voltage on the direct current bus and judges whether the voltage value of the bus is reduced to a set safe voltage range, if so, the emergency discharge is finished; if not, continuing the discharging process until the discharging reaches the safe voltage range, and finishing the emergency discharging;
under the normal discharge mode, the electric drive system discharges and the passive discharge ensures discharge doubly, and under the emergency discharge mode, the discharge is ensured through various ways of the electric drive system, the accessory module, the redundant discharge module and the passive discharge.
2. The discharging method of the motor controller of the new energy automobile according to claim 1, characterized in that: the accessory module is composed of one or more of a DC/DC, an air conditioner compressor, an inflating pump motor and a power steering pump motor.
3. The discharging method of the motor controller of the new energy automobile according to claim 2, characterized in that: the redundancy discharging module is composed of a low-resistance high-power resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810413416.4A CN108819719B (en) | 2018-05-03 | 2018-05-03 | Discharging method and device for motor controller of new energy automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810413416.4A CN108819719B (en) | 2018-05-03 | 2018-05-03 | Discharging method and device for motor controller of new energy automobile |
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| CN108819719A CN108819719A (en) | 2018-11-16 |
| CN108819719B true CN108819719B (en) | 2022-02-15 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112477617B (en) * | 2019-09-11 | 2022-09-09 | 宇通客车股份有限公司 | Method for controlling discharge of bus capacitor in vehicle, vehicle control device, and vehicle |
| CN110667384A (en) * | 2019-09-30 | 2020-01-10 | 上海伊控动力系统有限公司 | New energy automobile collision high-pressure safety system solution |
| CN113415164A (en) * | 2021-05-24 | 2021-09-21 | 江铃汽车股份有限公司 | Rapid discharge method, system and medium for electric vehicle and electric vehicle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102263510A (en) * | 2011-08-02 | 2011-11-30 | 联合汽车电子有限公司 | Full bridge isolation direct-current (DC) converter capable of discharging to front-end high-voltage bus |
| CN103269927A (en) * | 2010-12-23 | 2013-08-28 | 卡特彼勒公司 | Active High Voltage Bus Bleed Down |
| CN103707771A (en) * | 2012-09-28 | 2014-04-09 | Ls产电株式会社 | Voltage discharging device of vehicle and voltage discharging method thereof |
| CN103887784A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | DC-bus-capacitor discharge device of motor controller used for electric vehicle and electric vehicle |
| CN104354655A (en) * | 2014-09-25 | 2015-02-18 | 重庆长安汽车股份有限公司 | Discharging method and system for new energy vehicle |
| CN104393586A (en) * | 2014-12-04 | 2015-03-04 | 安徽巨一自动化装备有限公司 | Capacitor active discharge circuit of motor controller for electric automobile |
| CN105270182A (en) * | 2014-06-27 | 2016-01-27 | 联合汽车电子有限公司 | Discharging method of new energy automobile for bus high voltage |
| JP5888138B2 (en) * | 2012-06-14 | 2016-03-16 | 株式会社デンソー | Power converter |
| CN205890570U (en) * | 2016-07-29 | 2017-01-18 | 北京新能源汽车股份有限公司 | Electric automobile and high voltage supply system thereof |
| CN106347170A (en) * | 2016-10-19 | 2017-01-25 | 株洲中车时代电气股份有限公司 | Active discharging circuit of motor controller for electric automobile |
-
2018
- 2018-05-03 CN CN201810413416.4A patent/CN108819719B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103269927A (en) * | 2010-12-23 | 2013-08-28 | 卡特彼勒公司 | Active High Voltage Bus Bleed Down |
| CN102263510A (en) * | 2011-08-02 | 2011-11-30 | 联合汽车电子有限公司 | Full bridge isolation direct-current (DC) converter capable of discharging to front-end high-voltage bus |
| JP5888138B2 (en) * | 2012-06-14 | 2016-03-16 | 株式会社デンソー | Power converter |
| CN103707771A (en) * | 2012-09-28 | 2014-04-09 | Ls产电株式会社 | Voltage discharging device of vehicle and voltage discharging method thereof |
| CN103887784A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | DC-bus-capacitor discharge device of motor controller used for electric vehicle and electric vehicle |
| CN105270182A (en) * | 2014-06-27 | 2016-01-27 | 联合汽车电子有限公司 | Discharging method of new energy automobile for bus high voltage |
| CN104354655A (en) * | 2014-09-25 | 2015-02-18 | 重庆长安汽车股份有限公司 | Discharging method and system for new energy vehicle |
| CN104393586A (en) * | 2014-12-04 | 2015-03-04 | 安徽巨一自动化装备有限公司 | Capacitor active discharge circuit of motor controller for electric automobile |
| CN205890570U (en) * | 2016-07-29 | 2017-01-18 | 北京新能源汽车股份有限公司 | Electric automobile and high voltage supply system thereof |
| CN106347170A (en) * | 2016-10-19 | 2017-01-25 | 株洲中车时代电气股份有限公司 | Active discharging circuit of motor controller for electric automobile |
Non-Patent Citations (1)
| Title |
|---|
| 《电动汽车用驱动电机系统标准要求及应对措施》;智恒阳等;《汽车技术》;20170430;第6-10页 * |
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| CN108819719A (en) | 2018-11-16 |
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