CN113428015A - Motor control system and method and electric vehicle - Google Patents
Motor control system and method and electric vehicle Download PDFInfo
- Publication number
- CN113428015A CN113428015A CN202010190692.6A CN202010190692A CN113428015A CN 113428015 A CN113428015 A CN 113428015A CN 202010190692 A CN202010190692 A CN 202010190692A CN 113428015 A CN113428015 A CN 113428015A
- Authority
- CN
- China
- Prior art keywords
- motor
- vehicle
- control unit
- power
- motor control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 230000002159 abnormal effect Effects 0.000 claims abstract description 19
- 230000001133 acceleration Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 description 15
- 230000007246 mechanism Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- 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
-
- 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
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/14—Acceleration
- B60L2240/16—Acceleration longitudinal
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/423—Torque
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/427—Voltage
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/429—Current
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a motor control system and a method and an electric vehicle, wherein the motor control system comprises a motor controller, a vehicle control unit and a power transmission switching device, wherein the vehicle control unit is used for acquiring vehicle state information and outputting a power cut-off instruction when determining that power output is abnormal according to the vehicle state information; and the power transmission switching device is connected with the vehicle control unit and is used for disconnecting when receiving the power cut-off instruction so as to cut off the power output of the motor. According to the motor control system and method and the electric vehicle, a layer of motor power output control path is added by means of the vehicle controller, and the vehicle control safety level is improved.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a motor control system, a motor control method and an electric vehicle.
Background
At present, electric vehicles are developed more and more quickly, power sources of pure electric vehicles are basically driven by motors, and hybrid vehicles also have motor driving systems. In the field of vehicle applications, motor drive control takes into account not only functional performance, but also safety and reliability, and prevents unexpected situations from occurring. In the design process of the motor controller, the motor controller is generally treated as a self-perfected control system, the VCU of the vehicle controller mainly sends torque enabling and required torque instructions to the MCU, and torque output and other instructions are automatically judged by the motor controller, so that the safety level of vehicle control is reduced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, a first object of the present invention is to provide a motor control system, which can add more motor control paths and improve the safety level of the entire vehicle control.
The second purpose of the invention is to provide a motor control method.
A third object of the present invention is to provide an electric vehicle.
In order to achieve the above object, a motor control system according to an embodiment of a first aspect of the present invention includes: a motor controller; the vehicle control unit is used for acquiring vehicle state information and outputting a power cut-off instruction when determining that power output is abnormal according to the vehicle state information; and the power transmission switching device is connected with the vehicle control unit and is used for disconnecting when receiving the power cut-off instruction so as to cut off the power output of the motor.
According to the motor control system provided by the embodiment of the invention, a power cut-off path of the vehicle control unit for motor drive control is added, when the vehicle control unit determines that power transmission is abnormal according to the vehicle state information, the power transmission switching device is controlled to be switched off, and the power output of the motor is cut off, namely the vehicle control unit participates in the power output control of the motor, so that the safety of the power output is ensured from the perspective of the whole vehicle, the electric control system is more reliable, and the control safety level of the whole vehicle is improved.
In order to achieve the above object, a motor control method according to an embodiment of a second aspect of the present invention includes: the vehicle control unit acquires vehicle state information; the vehicle control unit judges whether power output is abnormal according to the vehicle state information; if yes, the power transmission switching device is controlled to be switched off so as to cut off the power output of the motor.
According to the motor control method provided by the embodiment of the invention, the vehicle controller participates in the motor torque output control, the power cut-off path of the vehicle control to the electric drive system is increased, and the safety of power output is ensured from the vehicle perspective, so that the electric control system is more reliable.
In order to achieve the above object, an electric vehicle according to an embodiment of a third aspect of the present invention includes an electric motor and the motor control system of any one of claims 1 to 6 for controlling the electric motor.
According to the electric vehicle provided by the embodiment of the invention, by adopting the motor control system of the embodiment, a layer of motor power output control path is added by virtue of the vehicle control unit, and the vehicle control safety level is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a topology schematic of a prior art motor control system;
FIG. 2 is a schematic of a topology of a motor control system according to an embodiment of the present invention;
FIG. 3 is a schematic topology of a motor control system according to another embodiment of the present invention;
FIG. 4 is a flow chart of a motor control method according to one embodiment of the present invention;
fig. 5 is a block diagram of an electric vehicle according to an embodiment of the invention.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
Fig. 1 is a typical topology of a prior art motor control system, in which a vehicle control unit only functions to send a torque demand command and torque enable, and for motor specific power output control, is controlled entirely by the detection mechanism of the motor controller itself. In order to achieve a higher safety level, the motor control system shown in fig. 1 needs more detection mechanisms and redundancy mechanisms, and the cost is higher. Therefore, in the embodiment of the invention, a layer of path is added by means of comprehensive judgment of the vehicle controller, so that the safety level of vehicle control is improved.
A motor control system according to an embodiment of the present invention is described below with reference to fig. 1 to 3.
Fig. 1 is a schematic diagram of a circuit topology of a motor control system according to an embodiment of the present invention, and as shown in fig. 1, the motor control system 1 of the embodiment of the present invention includes a motor controller 10, a hybrid controller 20, and a power transmission switching device 30.
The motor controller 10 may control the motor according to its own detection mechanism, for example, obtain current, voltage, and angle signals to perform driving control, and when determining an abnormality according to the detection signal, may control the power module to stop torque output, thereby improving safety.
In the embodiment of the invention, the vehicle control unit 20 is configured to acquire vehicle state information and output a power cut-off command when it is determined that the power output is abnormal according to the vehicle state information.
Specifically, the vehicle state information may include various operation detection data of the vehicle and fault data fed back during each period, for example, the vehicle control unit 20 may acquire various sensor information of the vehicle such as intelligent detection information of an acceleration sensor, radar detection, millimeter wave detection, and the like, and the vehicle fault information includes fault information of the motor controller 10, fault information of the steering controller, and the like, for example. The vehicle control unit 20 performs an operating state determination based on the vehicle state information, and outputs a power cut-off command when it determines that the power control is abnormal, for example, when the motor controller 10 is faulty or the operating state does not match the power drive or the power drive state is not expected. That is, in the embodiment of the present invention, the vehicle control unit 20 not only transmits the torque enable and the required torque to the motor controller 10, but also participates in the control of the motor power output.
The power transmission switching device 30 is connected to the vehicle control unit 20, and is configured to be disconnected upon receiving a power cut-off command, so as to cut off power output of the motor. The power transmission switching device 30 is disposed on the power transmission path of the motor, and when the power output is normal, the power transmission switching device 30 is in a closed state, which does not affect the power transmission of the motor, and when receiving a power cut-off command, the power transmission switching device 30 is turned off, thereby cutting off the power output of the motor. In the embodiment, the power transmission switching device 30 may be disposed on the motor control signal input side or the power output side, and may perform the function of cutting off the power output of the motor.
According to the motor control system 1 provided by the embodiment of the invention, the power cut-off path of the vehicle control unit 20 for motor drive control is added, when the vehicle control unit 20 determines that power transmission is abnormal according to the vehicle state information, the power transmission switching device 30 is controlled to be switched off, and the power output of the motor is cut off, namely the vehicle control unit 20 participates in the power output control of the motor, so that the safety of the power output is ensured from the vehicle angle, the electric control system is more reliable, and the control safety level of the vehicle is improved.
Further, as shown in fig. 2, the power transmission switching device 30 according to the embodiment of the present invention may include a three-phase contactor, where the three-phase contactor is connected between the motor controller 10 and the motor 9, that is, the vehicle control unit 20 controls the three-phase contactor (30) to be disconnected when power transmission is abnormal, that is, controls the three-phase contactor (30) to disconnect the power motor and the motor, so as to shut off the power supply of the power motor, and thus to cut off the power output of the motor 9.
Specifically, the motor controller 10 includes a motor control unit 11 and a drive unit 12, and the vehicle state information includes at least a failure signal of the motor control unit 11 or a failure signal of the drive unit 12. When the motor controller 10 normally controls the motor, the motor control unit 11 acquires information such as voltage, current, angle, and the like, generates 6 paths of PWM signals according to the acquired information, and transmits the PWM signals to the driving unit 12, and then the driving unit 12 processes the PWM signals and outputs the PWM signals to the power module 13, and the power module 13 outputs three-phase control signals to the motor 9, thereby implementing driving control of the motor 9. When the motor control unit 11 and the driving unit 12 have a fault, a fault signal is fed back to the vehicle control unit 20.
In some embodiments, when the vehicle control unit 20 determines that the power output is abnormal when receiving a fault signal of the motor control unit 11 or a fault signal of the driving unit 12, that is, the motor control signal is abnormal, a power cut-off command is output, and the three-phase contactor (30) is controlled to be opened.
For example, as shown in fig. 2, the vehicle control unit 20 may detect a Fault signal Fault _ control of the motor control unit 11 and a Fault signal Fault _ drv of the driving unit 12, and after the vehicle control unit 20 detects the Fault signal, the main contactor, i.e., the three-phase contactor (30), in the power system may be cut off by a signal FS _ signal to disconnect the electrical connection between the motor 9 and the motor controller 10, so as to cut off the power output of the driving motor 9, thereby ensuring the power safety of the vehicle.
In other embodiments, the vehicle control unit 20 is further configured to determine a power output abnormality when it is determined that the vehicle is operating at an unexpected acceleration based on the vehicle state information. Specifically, as shown in fig. 2, when the vehicle controller 20 determines an unexpected acceleration state, such as a difference between the current speed of the vehicle and the output torque of the motor, or a deviation of the acceleration of the vehicle from the acceleration command to determine an acceleration value, based on the intelligent detection information such as the self acceleration sensor, the radar detection, and the millimeter wave detection, the signal FS _ signal may be sent to disconnect the three-phase contactor (30), which is the main contactor in the power system, so as to disconnect the electrical connection between the motor 9 and the motor controller 10, thereby disconnecting the power output of the driving motor 9, and thus ensuring the power safety of the vehicle.
Further, the vehicle Controller is connected to the motor Controller through a CAN (Controller Area Network) bus or a hard wire, that is, the vehicle Controller CAN transmit an instruction through the CAN bus and CAN directly send a control signal to the motor Controller 10 through the hard wire; the vehicle controller 20 is further configured to send a bus power supply disconnection command to the motor controller 10 after controlling the power transmission switching device 30, such as a three-phase contactor, to disconnect the power supply of the motor controller 10, so as to shut down the direct power transmission from the power supply to the motor controller 10, thereby improving safety.
In other embodiments, as shown in fig. 3, the power transmission switching device 30 includes a clutch, such as an electromagnetic clutch, and the clutch (30) is disposed between the electric motor 9 and the transmission case 8 of the vehicle. Namely, a clutch (30) is connected in series between the motor 9 and the gearbox 8, and the power transmission between the power motor 9 and the gearbox 8 is cut off by controlling the clutch (30), thereby cutting off the power transmission.
Specifically, referring to fig. 3, the vehicle control unit 20 may detect a Fault signal Fault _ control of the motor control unit 11 and a Fault signal Fault _ drv of the driving unit 12, and after the vehicle control unit 20 detects the Fault signal, the power transmission of the clutch (30) in the drivetrain may be cut off by sending a signal FS _ signal to the clutch (30) to disconnect the transmission connection between the motor 9 and the gearbox 8, so as to cut off the power output of the driving motor 9, and ensure the power safety of the vehicle.
Or, when the vehicle controller 20 determines an unexpected acceleration state according to intelligent detection information such as a self acceleration sensor, radar detection, millimeter wave detection and the like, the power transmission of a clutch (30) in the power transmission system can be cut off by sending a signal FS _ signal to disconnect the transmission connection between the motor 9 and the gearbox 8, so that the power output of the driving motor 9 is cut off, and the power safety of the vehicle is ensured.
Further, the motor controller 10 includes a bus power supply for supplying power to the motor control unit 11 and the drive unit 12. The vehicle control unit 20 may transmit the command through a CAN line, or may directly transmit the control signal to the motor controller 10 through a hard line. After the vehicle control unit 20 controls the clutch (30) to be separated, an instruction of disconnecting the bus power supply of the motor controller 10 is sent out, so that the direct power transmission from the power supply to the motor controller 10 is closed, and the safety is improved.
In general, a higher safety level of the whole vehicle can be provided through the safe switching path of the whole vehicle controller 20 to the electric drive system, the dependence on the safety level of the motor controller 10 is reduced, and the safe operation of the vehicle is ensured as much as possible from the perspective of the whole vehicle. The faults of unexpected acceleration and the like cannot be normally detected by the motor controller 10, the intelligent detection information of the vehicle controller 20 is fully utilized, and the safe running time and the running reliability of the vehicle are enhanced.
A motor control method according to an embodiment of the second aspect of the present invention is described below with reference to fig. 4.
Fig. 4 is a flowchart of a motor control method according to an embodiment of the present invention, and as shown in fig. 4, the motor control method according to the embodiment of the present invention at least includes the following steps, which are described in detail below.
And S1, the vehicle control unit acquires the vehicle state information.
S2, the vehicle controller judges whether the power transmission is abnormal according to the vehicle state information, if so, the step S3 is carried out, otherwise, the step S1 is returned.
In an embodiment, when the vehicle control unit receives a fault signal of a motor control unit or a driving unit of the motor controller, the power output is determined to be abnormal, or when the vehicle control unit determines that the vehicle is operated in an unexpected acceleration mode according to the vehicle state information, the power output is determined to be abnormal.
And S3, controlling the power transmission switching device to be switched off so as to cut off the power output of the motor.
The power transmission switching device may include a switching device provided on the input side of the motor control signal, or a clutch device provided on the power output side of the motor, as shown in fig. 2 or 3.
According to the motor control method provided by the embodiment of the invention, the vehicle controller participates in the motor torque output control, the power cut-off path of the vehicle control to the electric drive system is increased, and the safety of power output is ensured from the vehicle perspective, so that the electric control system is more reliable.
Further, the motor control method of the embodiment of the present invention further includes: after the vehicle control unit controls the power transmission switching device to be disconnected, a bus power supply disconnection command is sent to the motor controller to cut off power supply of the motor controller, so that direct power transmission from the power supply to the motor controller is closed, and safety is improved.
In short, the motor control system and the motor control method in the embodiment of the invention increase one layer of motor power control path by means of comprehensive judgment of the vehicle controller, so that the safety level of vehicle control can be improved.
Based on the motor control system and method of the above embodiments, an embodiment of a third aspect of the invention provides an electric vehicle.
Fig. 5 is a block diagram of an electric vehicle according to an embodiment of the present invention, and as shown in fig. 5, an electric vehicle 100 of the embodiment of the present invention includes a motor 9 and the motor control system 1 of the above embodiment, wherein the topology and structure of the motor control system 1 may refer to the description of the above embodiment. The motor is controlled by the motor control system.
According to the electric vehicle 100 of the embodiment of the invention, by adopting the motor control system 1 of the above embodiment, a layer of motor power output control path is added by means of the vehicle control unit, and the vehicle control safety level is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A motor control system, comprising:
a motor controller;
the vehicle control unit is used for acquiring vehicle state information and outputting a power cut-off instruction when determining that power output is abnormal according to the vehicle state information;
and the power transmission switching device is connected with the vehicle control unit and is used for disconnecting when receiving the power cut-off instruction so as to cut off the power output of the motor.
2. The motor control system of claim 1 wherein the power transfer switching device includes a three-phase contactor connected between the motor controller and the motor.
3. A motor control system according to claim 1, characterised in that the power transmission switch means comprises a clutch arranged between the motor and the gearbox of the vehicle.
4. The motor control system according to claim 2 or 3,
the motor controller comprises a motor control unit and a driving unit, and the vehicle state information at least comprises a fault signal of the motor control unit or a fault signal of the driving unit;
and the vehicle control unit is used for determining that the power output is abnormal when receiving the fault signal of the motor control unit or the fault signal of the driving unit.
5. The motor control system according to claim 2 or 3,
and the vehicle control unit is also used for determining that the power output is abnormal when the unexpected acceleration running of the vehicle is determined according to the vehicle state information.
6. The motor control system of claim 5,
the vehicle controller is connected with the motor controller through a CAN bus or a hard wire;
and the vehicle control unit is also used for sending a bus power supply disconnection instruction to the motor controller after controlling the power transmission switching device to be disconnected so as to cut off the power supply of the motor controller.
7. A motor control method, comprising:
the vehicle control unit acquires vehicle state information;
the vehicle control unit judges whether power output is abnormal according to the vehicle state information;
if yes, the power transmission switching device is controlled to be switched off so as to cut off the power output of the motor.
8. The motor control method according to claim 7, wherein the vehicle control unit determining whether power output is abnormal according to the vehicle state information includes:
and when the vehicle control unit receives a fault signal of a motor control unit or a driving unit of the motor controller, or when the unexpected acceleration running of the vehicle is determined according to the vehicle state information, determining that the power output is abnormal.
9. The motor control method according to claim 7, further comprising:
and after controlling the power transmission switching device to be disconnected, the vehicle control unit sends a bus power supply disconnection instruction to the motor controller so as to cut off the power supply of the motor controller.
10. An electric vehicle comprising an electric motor and a motor control system according to any one of claims 1 to 6 for controlling the electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010190692.6A CN113428015A (en) | 2020-03-18 | 2020-03-18 | Motor control system and method and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010190692.6A CN113428015A (en) | 2020-03-18 | 2020-03-18 | Motor control system and method and electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113428015A true CN113428015A (en) | 2021-09-24 |
Family
ID=77752352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010190692.6A Pending CN113428015A (en) | 2020-03-18 | 2020-03-18 | Motor control system and method and electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113428015A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114442520A (en) * | 2021-12-22 | 2022-05-06 | 汉博来自控科技(上海)有限公司 | Function safety control system of scissor fork truck |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0195944A (en) * | 1987-10-07 | 1989-04-14 | Aisin Aw Co Ltd | Power transmitting gear for hybrid vehicle |
| CN201385585Y (en) * | 2009-04-09 | 2010-01-20 | 海马(郑州)汽车有限公司 | Power-off control device of electrical vehicle power battery |
| US20110118925A1 (en) * | 2009-11-18 | 2011-05-19 | Kan Sasaki | Power transmission mechanism for hybrid vehicle |
| KR101453291B1 (en) * | 2014-08-18 | 2014-10-22 | 주식회사 한중엔시에스 | Output of the car and start the engine control system |
| CN108681318A (en) * | 2018-03-23 | 2018-10-19 | 浙江吉利汽车研究院有限公司 | A kind of the functional safety monitoring system and its method of electric machine controller |
| CN108749648A (en) * | 2018-08-03 | 2018-11-06 | 深圳市大地和电气股份有限公司 | A kind of electric machine control system and method reducing functional safety grade |
| CN109263482A (en) * | 2018-09-06 | 2019-01-25 | 北京长城华冠汽车科技股份有限公司 | The method for controlling driving speed and vehicle speed control system and vehicle of electric car |
| CN109747423A (en) * | 2019-01-25 | 2019-05-14 | 中国第一汽车股份有限公司 | A kind of electric car Safety Shutdown System and method |
-
2020
- 2020-03-18 CN CN202010190692.6A patent/CN113428015A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0195944A (en) * | 1987-10-07 | 1989-04-14 | Aisin Aw Co Ltd | Power transmitting gear for hybrid vehicle |
| CN201385585Y (en) * | 2009-04-09 | 2010-01-20 | 海马(郑州)汽车有限公司 | Power-off control device of electrical vehicle power battery |
| US20110118925A1 (en) * | 2009-11-18 | 2011-05-19 | Kan Sasaki | Power transmission mechanism for hybrid vehicle |
| KR101453291B1 (en) * | 2014-08-18 | 2014-10-22 | 주식회사 한중엔시에스 | Output of the car and start the engine control system |
| CN108681318A (en) * | 2018-03-23 | 2018-10-19 | 浙江吉利汽车研究院有限公司 | A kind of the functional safety monitoring system and its method of electric machine controller |
| CN108749648A (en) * | 2018-08-03 | 2018-11-06 | 深圳市大地和电气股份有限公司 | A kind of electric machine control system and method reducing functional safety grade |
| CN109263482A (en) * | 2018-09-06 | 2019-01-25 | 北京长城华冠汽车科技股份有限公司 | The method for controlling driving speed and vehicle speed control system and vehicle of electric car |
| CN109747423A (en) * | 2019-01-25 | 2019-05-14 | 中国第一汽车股份有限公司 | A kind of electric car Safety Shutdown System and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114442520A (en) * | 2021-12-22 | 2022-05-06 | 汉博来自控科技(上海)有限公司 | Function safety control system of scissor fork truck |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107482761B (en) | Power supply system | |
| CN107097779B (en) | Control method and device for hybrid electric vehicle | |
| US9944280B2 (en) | Vehicle control system | |
| CN103085667B (en) | The main relay monitoring device of green vehicle and method | |
| US8508066B2 (en) | Emergency control apparatus and method for use | |
| CN108819937B (en) | New energy automobile limping mode control method and system | |
| US20130116876A1 (en) | Electric vehicle and method for controlling emergency thereof | |
| CN114103838A (en) | Power control apparatus and method for autonomous vehicle | |
| CN101428594B (en) | Vehicle starting device and control method | |
| JP2013243919A (en) | Apparatus and method for diagnosing relay contact of electric vehicle | |
| EP2189734B1 (en) | Heater controller | |
| CN110893822A (en) | Vehicle-mounted power grid for motor vehicle | |
| WO2014139542A1 (en) | Method and arrangement for operating a hybrid electrical vehicle | |
| JP2008087534A (en) | Vehicular load control system | |
| JP2019535222A (en) | Hazardous voltage interlock loop system | |
| CN112751408A (en) | Power supply circuit and power supply method | |
| CN112947043A (en) | Vehicle redundancy control system, control method thereof and vehicle | |
| CN113315091B (en) | Motor control system and vehicle | |
| CN113428015A (en) | Motor control system and method and electric vehicle | |
| JP5067359B2 (en) | Fault diagnosis device for electronic control system | |
| CN103889768B (en) | Cut off the safety method of the power supply of electric motor and corresponding equipment | |
| JP2008302754A (en) | Control device for hybrid vehicle | |
| CN114466762A (en) | Control device for vehicle | |
| CN114825462B (en) | Safety power supply control system and method | |
| CN112109695A (en) | Engine starting system of hybrid vehicle and method of controlling the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |