CN114537155B - Method and device for determining motor output torque and electric automobile - Google Patents
Method and device for determining motor output torque and electric automobile Download PDFInfo
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- CN114537155B CN114537155B CN202011352776.1A CN202011352776A CN114537155B CN 114537155 B CN114537155 B CN 114537155B CN 202011352776 A CN202011352776 A CN 202011352776A CN 114537155 B CN114537155 B CN 114537155B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000011084 recovery Methods 0.000 claims abstract description 132
- 238000010586 diagram Methods 0.000 abstract description 10
- 230000001133 acceleration Effects 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 230000000386 athletic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
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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
- 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
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a method and a device for determining motor output torque and an electric automobile, and relates to the technical field of electric automobiles, wherein the method for determining motor output torque comprises the following steps: according to a pre-stored external characteristic curve graph, obtaining an external characteristic torque value corresponding to the current power output type; according to a pre-stored energy recovery graph, an energy recovery torque value corresponding to a current energy recovery mode is obtained; acquiring an accelerator coefficient factor value corresponding to the current power output type according to a pre-stored accelerator characteristic graph; and determining the current motor output torque value of the vehicle according to the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value. According to the scheme, the motor output torque corresponding to the combination of different power output types and different energy recovery modes is fitted through the three-dimensional degree curve diagram, the calibration complexity of the whole vehicle is reduced, the occupied memory capacity is reduced through the pre-stored three-dimensional degree curve diagram, and the cost of an electronic control unit of the whole vehicle is reduced.
Description
Technical Field
The invention belongs to the technical field of electric automobiles, and particularly relates to a method and a device for determining motor output torque and an electric automobile.
Background
With the rapid development of pure electric vehicles, most electric vehicles provide different power output types in order to achieve better user experience. Different power output types, such as athletic, comfort, and economy power outputs, will exhibit different acceleration and power response properties; different acceleration performance and power response performance are reflected according to different motor output power, motor output torque and motor output torque change rate; the different motor output powers and motor output torques are determined based upon the electronically controlled pedal map.
On this basis, in order to meet the requirements of different users on the endurance and braking feeling of the vehicle, most electric vehicle models also provide different energy recovery modes, such as weak energy recovery, medium energy recovery and strong energy recovery.
However, different energy recovery strengths are also achieved by different electronically controlled pedal maps. The electric control pedal map is stored in a memory of the whole vehicle electric control unit, a horizontal axis is usually the accelerator opening of a driver, a vertical axis is the current running speed, and the whole vehicle electric control unit determines the current motor output torque according to the electric control pedal map, the current driver pedal opening and the current running speed. One pedal map is exemplified by 25 data points in each coordinate axis, and each electronic control pedal map stores 25×25+25+25 total 675 floating point data, which occupies 2700 bytes of space. In order to realize the combination of the three power output types and the three energy recovery modes, the whole vehicle electric control unit at least needs to store 9 electric control pedal diagrams, and the whole vehicle electric control unit occupies 24300 byte space, namely about 24KB of memory capacity, which brings great challenges to the memory capacity and calibration cost of the whole vehicle electric control unit.
Disclosure of Invention
The embodiment of the invention aims to provide a method and a device for determining motor output torque and an electric automobile, so that the problem that the motor output torque corresponding to the combination of different power output types and different energy recovery modes is obtained by adopting an electric control pedal diagram in the prior art and occupies excessive memory capacity of an electric control unit of the whole automobile is solved.
In order to achieve the above object, the present invention provides a method of determining an output torque of a motor, the method comprising:
according to a pre-stored external characteristic curve graph, obtaining an external characteristic torque value corresponding to the current power output type;
according to a pre-stored energy recovery graph, an energy recovery torque value corresponding to a current energy recovery mode is obtained;
acquiring an accelerator coefficient factor value corresponding to the current power output type according to a pre-stored accelerator characteristic graph;
determining a current motor output torque value of the vehicle according to the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value;
wherein, the external characteristic curve chart records external characteristic torque values corresponding to running speeds of different power output types;
the energy recovery curve graph records energy recovery torque values corresponding to the running speeds of different energy recovery modes;
and the throttle characteristic curve chart records throttle coefficient factor values corresponding to throttle opening degrees of different power output types.
Optionally, the external characteristic graph includes:
at least three curves corresponding to at least three power output types, wherein the abscissa of the external characteristic curve graph represents the running speed and the ordinate represents the external characteristic torque.
Optionally, the energy recovery profile includes:
at least three curves corresponding to at least three energy recovery modes, wherein the abscissa of the energy recovery graph represents the running speed and the ordinate represents the energy recovery torque.
Optionally, the throttle characteristic graph includes:
and at least three curves corresponding to at least three power output types, wherein the abscissa of the accelerator characteristic curve graph represents the accelerator opening degree, and the ordinate represents the accelerator coefficient factor.
Optionally, the determining the current motor output torque value of the vehicle according to the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value includes:
according to the formula t=t s ×a+T r (1-a) determining a current motor output torque value T of the vehicle;
wherein T is s Is the external characteristic torque value corresponding to the current power output type; t (T) r Is the energy recovery torque value corresponding to the current energy recovery mode; a is the throttle coefficient factor value corresponding to the current power output type.
Optionally, the at least three power output types include:
sports type power take off type, comfort type power take off type, and economy type power take off type.
Optionally, the at least three energy recovery modes include:
a weak energy recovery mode, a medium energy recovery mode, and a strong energy recovery mode.
The embodiment of the invention also provides a device for determining the output torque of a motor, which comprises:
the first sub-acquisition module is used for acquiring an external characteristic torque value corresponding to the current power output type according to a pre-stored external characteristic curve graph;
the second sub-acquisition module is used for acquiring an energy recovery torque value corresponding to the current energy recovery mode according to a pre-stored energy recovery graph;
the third sub-acquisition module is used for acquiring an accelerator coefficient factor value corresponding to the current power output type according to a pre-stored accelerator characteristic curve graph;
the determining module is used for determining the current motor output torque value of the vehicle according to the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value;
wherein, the external characteristic curve chart records external characteristic torque values corresponding to running speeds of different power output types;
the energy recovery curve graph records energy recovery torque values corresponding to the running speeds of different energy recovery modes;
and the throttle characteristic curve chart records throttle coefficient factor values corresponding to throttle opening degrees of different power output types.
Optionally, the determining module is specifically configured to:
according to the formula t=t s ×a+T r (1-a) determining a current motor output torque value T of the vehicle;
wherein T is s Is the external characteristic torque value corresponding to the current power output type; t (T) r Is the energy recovery torque value corresponding to the current energy recovery mode; a is the throttle coefficient factor value corresponding to the current power output type.
The embodiment of the invention also provides an electric automobile, which comprises the motor output torque determining device.
The technical scheme of the invention has at least the following beneficial effects:
according to the scheme, the method for determining the motor output torque respectively obtains the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value of the combination of different power output types and different energy recovery modes according to the external characteristic curve graph, the energy recovery curve graph and the accelerator characteristic curve graph which are stored in advance, so that the current motor output torque value of the vehicle is determined, and fine adjustment of the power performance and the energy recovery characteristic of the whole vehicle is realized. The external characteristic curve graph, the energy recovery curve graph and the accelerator characteristic curve graph are adopted, so that the calibration complexity of the whole vehicle is reduced, the occupied memory capacity is reduced, and the cost of an electric control unit of the whole vehicle is reduced.
Drawings
FIG. 1 is a flow chart of a method for determining motor output torque according to an embodiment of the present invention;
FIG. 2 is an external characteristic diagram of a method of determining motor output torque according to an embodiment of the present invention;
FIG. 3 is a graph of energy recovery in a method of determining motor output torque according to an embodiment of the present invention;
FIG. 4 is a graph of throttle plate characteristics in a method of determining motor output torque according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a motor output torque determining device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
Aiming at the problem that in the prior art, the electric control pedal diagram is adopted to obtain motor output torques corresponding to combinations of different power output types and different energy recovery modes, and excessive memory capacity of an electric control unit of the whole vehicle is occupied, the invention provides a method and a device for determining the motor output torques and an electric automobile.
The method of determining the motor output torque is described in detail below in specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a method for determining an output torque of a motor, the method including:
step S11, according to a pre-stored external characteristic curve graph, obtaining an external characteristic torque value corresponding to the current power output type;
since different power output types of the vehicle show different external characteristics, it is necessary to search the external characteristic torque value in the external characteristic graph stored in advance according to the obtained current power output type during the running of the vehicle.
The method for determining the motor output torque is applied to an electric automobile or other devices needing to determine the motor output torque.
Step S12, according to a pre-stored energy recovery graph, acquiring an energy recovery torque value corresponding to the current energy recovery mode;
since different energy recovery modes of the vehicle exhibit different recovery torques, it is necessary to search for an energy recovery torque value in a pre-stored energy recovery graph according to the obtained current energy recovery mode during running of the vehicle.
Step S13, acquiring an accelerator coefficient factor value corresponding to the current power output type according to a pre-stored accelerator characteristic curve graph;
since different power output types of the vehicle show different throttle coefficient factors, the throttle coefficient factor value needs to be searched in the pre-stored throttle characteristic diagram according to the obtained current power output type during the running of the vehicle.
Step S14, determining the current motor output torque value of the vehicle according to the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value;
wherein, the external characteristic curve chart records external characteristic torque values corresponding to running speeds of different power output types;
the energy recovery curve graph records energy recovery torque values corresponding to the running speeds of different energy recovery modes;
and the throttle characteristic curve chart records throttle coefficient factor values corresponding to throttle opening degrees of different power output types.
In the embodiment of the invention, according to the external characteristic curve graph, the energy recovery curve graph and the accelerator characteristic curve graph which are stored in advance, the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value of the combination of different power output types and different energy recovery modes are respectively obtained, so that the current motor output torque value of the vehicle is determined, and the fine adjustment of the power performance and the energy recovery characteristic of the whole vehicle is realized. The external characteristic curve graph, the energy recovery curve graph and the accelerator characteristic curve graph are adopted, so that the calibration complexity of the whole vehicle is reduced, the occupied memory capacity is reduced, and the cost of an electric control unit of the whole vehicle is reduced.
As shown in fig. 2, in the embodiment of the present invention, the external characteristic graph includes:
at least three curves corresponding to at least three power output types, wherein the abscissa of the external characteristic curve graph represents the running speed and the ordinate represents the external characteristic torque.
Here, the at least three power output types include: sports type power take off type, comfort type power take off type, and economy type power take off type.
It should be noted that, the external characteristic graph is a single-dimensional graph, the driving speed is taken as an abscissa, the external characteristic torque is taken as an ordinate, "- ≡ -" represents the sport power output type, "-" represents the comfort power output type and "- ≡o-represents the economic power output type, different power powers and maximum acceleration torques are achieved, wherein the power and maximum acceleration torque of the sport power output type are most used, the power and maximum acceleration torque of the comfort power output type are least used, and the external characteristic graph shows acceleration and corresponding performances under different power output types.
As shown in fig. 3, in the embodiment of the present invention, the energy recovery graph includes:
at least three curves corresponding to at least three energy recovery modes, wherein the abscissa of the energy recovery graph represents the running speed and the ordinate represents the energy recovery torque.
Here, the at least three energy recovery modes include: a weak energy recovery mode, a medium energy recovery mode, and a strong energy recovery mode.
The energy recovery graph is a one-dimensional graph, the travel speed is the abscissa, the energy recovery torque is the ordinate, "- ≡ -" indicates the weak energy recovery mode, "- ≡-" indicates the medium energy recovery mode, and "- ≡o-" indicates the strong energy recovery mode, and the energy recovery torque gradually increases, and the recovery drag feeling and deceleration in the different energy recovery modes are exhibited.
As shown in fig. 4, in the embodiment of the present invention, the throttle characteristic graph includes:
and at least three curves corresponding to at least three power output types, wherein the abscissa of the accelerator characteristic curve graph represents the accelerator opening degree, and the ordinate represents the accelerator coefficient factor.
It should be noted that, the accelerator characteristic graph is a single-dimensional graph, the accelerator opening is taken as an abscissa, the accelerator coefficient factor is taken as an ordinate, "- ≡" - ≡o "represents the sport power output type," - "represents the comfort power output type and" - ≡o "represents the economic power output type, wherein under the sport power output type, the initial section characteristic factor of the accelerator pedal rises faster, and the light and quick accelerator pedal characteristic is reflected; under the economical power output type, the characteristic factor of the initial section of the accelerator pedal rises slowly, and the characteristic of the accelerator pedal with stable weight and softness is reflected, so that the characteristics of the accelerator pedal under different power output types are realized.
It should be further noted that, the external characteristic curve graph, the energy recovery curve graph and the throttle characteristic curve graph are generally manufactured in a calibration test stage of the whole vehicle, and three curve graphs respectively include three curves, each coordinate axis includes 25 data points, and the three curve graphs store (25×3+25) ×3 floating point data in total, occupy 1200 byte spaces, namely occupy about 2KB of memory capacity, and compared with a method adopting 9 electric control pedal graphs in the prior art, the memory release is at least 90%, so that the memory capacity occupying the electric control unit of the whole vehicle is greatly reduced, the calibration workload of 90% is reduced, and the calibration complexity is greatly reduced.
Specifically, the determining the current motor output torque value of the vehicle according to the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value includes:
according to the formula t=t s ×a+T r (1-a) determining a current motor output torque value T of the vehicle;
wherein T is s Is the external characteristic torque value corresponding to the current power output type; t (T) r Is the energy recovery torque value corresponding to the current energy recovery mode; a is the throttle coefficient factor value corresponding to the current power output type.
During the running of the vehicle, the current external characteristic torque value T of the combination of different power output types and different energy recovery modes can be obtained through a three-dimensional degree curve chart according to the current running speed and the current accelerator opening of the vehicle s Current energy recovery torque value T r And the current accelerator coefficient factor value a, so that the current motor output torque value T of the vehicle can be calculated without an electric control pedal diagram in the prior art.
As shown in fig. 5, an embodiment of the present invention further provides a device for determining output torque of a motor, where the determining device includes:
the first sub-acquisition module 51 is configured to acquire an external characteristic torque value corresponding to a current power output type according to a pre-stored external characteristic graph;
the second sub-acquisition module 52 is configured to acquire an energy recovery torque value corresponding to the current energy recovery mode according to a pre-stored energy recovery graph;
a third sub-acquiring module 53, configured to acquire an accelerator coefficient factor value corresponding to a current power output type according to a pre-stored accelerator characteristic graph;
a determining module 54 configured to determine a current motor output torque value of the vehicle based on the external characteristic torque value, the energy recovery torque value, and the throttle factor value;
wherein, the external characteristic curve chart records external characteristic torque values corresponding to running speeds of different power output types;
the energy recovery curve graph records energy recovery torque values corresponding to the running speeds of different energy recovery modes;
and the throttle characteristic curve chart records throttle coefficient factor values corresponding to throttle opening degrees of different power output types.
In this embodiment of the invention, the motor output torque determining device applies the motor output torque determining method described above, and obtains the external characteristic torque value, the energy recovery torque value, and the accelerator coefficient factor value of the combination of the different power output types and the different energy recovery modes through the three-dimensional degree curve graph, thereby determining the current motor output torque value of the vehicle. The pre-stored three curve graphs greatly reduce the memory capacity of the whole vehicle electric control unit, and simultaneously reduce the calibration workload.
Specifically, the outer characteristic diagram includes:
at least three curves corresponding to at least three power output types, wherein the abscissa of the external characteristic curve graph represents the running speed and the ordinate represents the external characteristic torque.
Further, the energy recovery profile includes:
at least three curves corresponding to at least three energy recovery modes, wherein the abscissa of the energy recovery graph represents the running speed and the ordinate represents the energy recovery torque.
Still further, the throttle characteristic map includes:
and at least three curves corresponding to at least three power output types, wherein the abscissa of the accelerator characteristic curve graph represents the accelerator opening degree, and the ordinate represents the accelerator coefficient factor.
Here, the determining module 54 specifically is configured to:
according to the formula t=t s ×a+T r (1-a) determining a current motor output torque value T of the vehicle;
wherein T is s Is the external characteristic torque value corresponding to the current power output type; t (T) r Is the energy recovery torque value corresponding to the current energy recovery mode; a is the throttle coefficient factor value corresponding to the current power output type.
And, the at least three power output types include: sports type power take off type, comfort type power take off type, and economy type power take off type. The at least three energy recovery modes include: a weak energy recovery mode, a medium energy recovery mode, and a strong energy recovery mode.
It should be noted that, the device applies the method for determining the output torque of the motor, and the implementation manner of the embodiment of the method is applicable to the device and can achieve the same technical effects.
The embodiment of the invention also provides an electric automobile, which comprises the device for determining the output torque of the motor.
It should be noted that, the electric automobile provided with the determining device for the output torque of the motor has the technical characteristics described above, so that the problem that the memory capacity of the whole automobile electric control unit occupies too much is greatly improved, the calibration complexity is reduced, and the description is omitted here.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A method of determining an output torque of an electric motor, the method comprising:
according to a pre-stored external characteristic curve graph, obtaining an external characteristic torque value corresponding to the current power output type;
according to a pre-stored energy recovery graph, an energy recovery torque value corresponding to a current energy recovery mode is obtained;
acquiring an accelerator coefficient factor value corresponding to the current power output type according to a pre-stored accelerator characteristic graph;
determining a current motor output torque value of the vehicle according to the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value;
wherein, the external characteristic curve chart records external characteristic torque values corresponding to running speeds of different power output types;
the energy recovery curve graph records energy recovery torque values corresponding to the running speeds of different energy recovery modes;
the throttle characteristic curve graph records throttle coefficient factor values corresponding to throttle opening degrees of different power output types;
the determining a current motor output torque value of the vehicle according to the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value comprises the following steps:
according to the formula t=t s ×a+T r (1-a) determining a current motor output torque value T of the vehicle;
wherein T is s Is the external characteristic torque value corresponding to the current power output type; t (T) r Is the energy recovery torque value corresponding to the current energy recovery mode; a is the throttle coefficient factor value corresponding to the current power output type.
2. The method of determining motor output torque according to claim 1, wherein the outer characteristic map includes:
at least three curves corresponding to at least three power output types, wherein the abscissa of the external characteristic curve graph represents the running speed and the ordinate represents the external characteristic torque.
3. The method of determining motor output torque according to claim 1, wherein the energy recovery map includes:
at least three curves corresponding to at least three energy recovery modes, wherein the abscissa of the energy recovery graph represents the running speed and the ordinate represents the energy recovery torque.
4. The method of determining motor output torque as recited in claim 1, wherein the throttle characteristic map includes:
and at least three curves corresponding to at least three power output types, wherein the abscissa of the accelerator characteristic curve graph represents the accelerator opening degree, and the ordinate represents the accelerator coefficient factor.
5. The method of determining motor output torque according to claim 2 or 4, characterized in that the at least three power output types include:
sports power output type, comfort power output, and economy power output type.
6. A method of determining motor output torque as claimed in claim 3 wherein the at least three energy recovery modes comprise:
a weak energy recovery mode, a medium energy recovery mode, and a strong energy recovery mode.
7. A determination device of an output torque of a motor, characterized by comprising:
the first sub-acquisition module is used for acquiring an external characteristic torque value corresponding to the current power output type according to a pre-stored external characteristic curve graph;
the second sub-acquisition module is used for acquiring an energy recovery torque value corresponding to the current energy recovery mode according to a pre-stored energy recovery graph;
the third sub-acquisition module is used for acquiring an accelerator coefficient factor value corresponding to the current power output type according to a pre-stored accelerator characteristic curve graph;
the determining module is used for determining the current motor output torque value of the vehicle according to the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value;
wherein, the external characteristic curve chart records external characteristic torque values corresponding to running speeds of different power output types;
the energy recovery curve graph records energy recovery torque values corresponding to the running speeds of different energy recovery modes;
the throttle characteristic curve graph records throttle coefficient factor values corresponding to throttle opening degrees of different power output types;
the determining a current motor output torque value of the vehicle according to the external characteristic torque value, the energy recovery torque value and the accelerator coefficient factor value comprises the following steps:
according to the formula t=t s ×a+T r (1-a) determining a current motor output torque value T of the vehicle;
wherein T is s Is the external characteristic torque value corresponding to the current power output type; t (T) r Is the energy recovery torque value corresponding to the current energy recovery mode; a is the throttle coefficient factor value corresponding to the current power output type.
8. An electric vehicle comprising the motor output torque determining apparatus according to claim 7.
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| CN202011352776.1A CN114537155B (en) | 2020-11-26 | 2020-11-26 | Method and device for determining motor output torque and electric automobile |
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| CN202011352776.1A CN114537155B (en) | 2020-11-26 | 2020-11-26 | Method and device for determining motor output torque and electric automobile |
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| CN104648184A (en) * | 2014-12-30 | 2015-05-27 | 北京新能源汽车股份有限公司 | Multimode drive control method for pure electric vehicle |
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