CN113067521A - Winding control method and device of driving motor and electric automobile - Google Patents
Winding control method and device of driving motor and electric automobile Download PDFInfo
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- CN113067521A CN113067521A CN201911390799.9A CN201911390799A CN113067521A CN 113067521 A CN113067521 A CN 113067521A CN 201911390799 A CN201911390799 A CN 201911390799A CN 113067521 A CN113067521 A CN 113067521A
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- driving motor
- coil
- rotating speed
- winding
- winding coil
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
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- 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
- Y02T10/64—Electric machine technologies in electromobility
-
- 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
Abstract
The invention provides a winding control method and a winding control device of a driving motor and an electric automobile, and relates to the field of motor winding connection; determining a connection mode of a winding coil of the driving motor according to the rotating speed type of the driving motor; and controlling the connection of the winding coil of the driving motor according to the connection mode of the winding coil of the driving motor. According to the winding control method of the driving motor, different connection modes of the winding coils of the driving motor are adopted according to different rotating speeds of the driving motor, the flux weakening and speed expanding capacity of the driving motor is enhanced, the power density and the torque density of the driving motor can be larger with the driving motor with the same volume, the connection mode of the winding coils of the driving motor has the advantages of compact structure, easiness in operation and control and good economical efficiency, and the power safety of the whole vehicle is improved.
Description
Technical Field
The invention relates to the field of driving motors, in particular to a winding control method and device of a driving motor and an electric automobile.
Background
With the rapid development of the new energy automobile industry, the requirement of the whole automobile on the rotating speed of a driving motor is higher and higher, the highest rotating speed of the driving motor in the current market is about 15000rpm, and in order to improve the product competitiveness of companies and strive for the leading position of the industry, a winding control scheme of the driving motor for the electric automobile capable of improving the highest rotating speed of the driving motor is urgently needed to be researched. The winding control scheme of the driving motor disclosed by the invention is characterized in that the connection mode of the winding of the driving motor is changed according to different motor rotating speed areas, the rotating speed of the motor is increased, the high-speed power of the motor is increased, and the high-efficiency interval is optimized.
Disclosure of Invention
The embodiment of the invention provides a winding control method and device of a driving motor and an electric vehicle, which are used for solving the problems of small field weakening speed expansion range, small high-speed output power, limited maximum rotating speed and the like of the motor for the conventional electric vehicle.
In order to solve the technical problems, the invention adopts the following technical scheme:
a winding control method of a drive motor, comprising:
acquiring the rotating speed of a driving motor, and judging the rotating speed type of the driving motor according to the rotating speed of the driving motor;
determining a connection mode of a winding coil of the driving motor according to the rotating speed type of the driving motor;
and controlling the connection of the winding coil of the driving motor according to the connection mode of the winding coil of the driving motor.
Further, the determining the type of the rotation speed of the driving motor according to the rotation speed of the driving motor includes:
when the rotating speed of the driving motor is less than the preset rotating speed of the driving motor, the rotating speed type of the driving motor is a first type of rotating speed;
and when the rotating speed of the driving motor is greater than or equal to the preset rotating speed of the driving motor, the rotating speed type of the driving motor is a second type of rotating speed.
Further, the determining the connection mode of the winding of the driving motor according to the type of the rotating speed of the driving motor includes:
when the type of the rotating speed of the driving motor is a first type of rotating speed, the connection mode of the winding of the driving motor is a first connection mode;
and when the type of the rotating speed of the driving motor is the second type of rotating speed, the connection mode of the winding of the driving motor is the second connection mode.
Further, the driving motor winding coil includes:
the first end of the U-phase winding coil is grounded, and the second end of the U-phase winding coil is connected with a U-phase lead interface of the driving motor;
a first end of the V-phase winding coil is connected with a first end of the U-phase winding coil, and a second end of the V-phase winding coil is connected with a V lead wire connection port of the driving motor;
and the first end of the W-phase winding coil is connected with the first end of the V-phase winding coil, and the second end of the W-phase winding coil is connected with a W lead wire interface of the driving motor.
Further, the first connection mode is as follows:
the U-phase winding coil comprises a first coil and a second coil which are connected in series;
the V-phase winding coil comprises a third coil and a fourth coil which are connected in series;
the W-phase winding coil includes a fifth coil and a sixth coil connected in series.
Further, the first end of the U-phase winding coil is grounded, and the negative electrode of the U-phase winding coil is grounded.
Further, the second connection mode is as follows:
the U-phase winding coil comprises a first coil and a second coil which are connected in parallel;
the V-phase winding coil comprises a third coil and a fourth coil which are connected in parallel;
the W-phase winding coil comprises a fifth coil and a sixth coil which are connected in parallel.
Further, the first end of the U-phase winding coil is grounded, and the negative electrode of the U-phase winding coil is grounded.
An embodiment of the present invention further provides a winding control device for a driving motor, including:
the acquisition module is used for acquiring the rotating speed of the driving motor and judging the rotating speed type of the driving motor according to the rotating speed of the driving motor;
the determining module is used for determining the connection mode of the driving motor winding according to the rotating speed type of the driving motor;
and the control module is used for controlling the connection of the winding coil of the driving motor according to the connection mode of the winding coil of the driving motor.
The embodiment of the invention also provides an electric automobile which comprises the winding control device of the driving motor.
The invention has the beneficial effects that:
according to the winding control method of the driving motor, different connection modes of the winding coils of the driving motor are adopted according to different rotating speeds of the driving motor, the flux weakening and speed expanding capacity of the driving motor is enhanced, meanwhile, the connection mode of the winding coils of the driving motor has the advantages of compact structure, easiness in operation and control and good economical efficiency, the power density and the torque density of the driving motor can be larger with the same size of the driving motor, the highest rotating speed can reach 2 times of those of the traditional driving motor, and the power safety of the whole vehicle is improved.
Drawings
Fig. 1 is a schematic view showing steps of a winding control method of a driving motor according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a first connection of a winding coil of a drive motor according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a second connection of the winding coils of the drive motor according to the embodiment of the invention;
fig. 4 shows a block diagram of a winding control device of a drive motor according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a winding control method and device of a driving motor and an electric vehicle, aiming at the problems of small field weakening speed expansion range, small high-speed output power, limited maximum rotating speed and the like of the existing motor for the electric vehicle.
As shown in fig. 1, a winding control method of a driving motor includes:
step 100, acquiring the rotating speed of a driving motor, and judging the rotating speed type of the driving motor according to the rotating speed of the driving motor;
200, determining a connection mode of a winding coil of the driving motor according to the rotating speed type of the driving motor;
and 300, controlling the connection of the winding coil of the driving motor according to the connection mode of the winding coil of the driving motor.
According to the winding control method of the driving motor, different connection modes of the winding coils of the driving motor are adopted according to different rotating speeds of the driving motor, the flux weakening and speed expanding capacity of the driving motor is enhanced, meanwhile, the connection mode of the winding coils of the driving motor has the advantages of compact structure, easiness in operation and control and good economical efficiency, the power density and the torque density of the driving motor can be larger with the same size of the driving motor, the highest rotating speed can reach 2 times of those of the traditional driving motor, and the power safety of the whole vehicle is improved.
Optionally, the determining the type of the rotation speed of the driving motor according to the rotation speed of the driving motor includes:
when the rotating speed of the driving motor is less than the preset rotating speed of the driving motor, the rotating speed type of the driving motor is a first type of rotating speed;
and when the rotating speed of the driving motor is greater than or equal to the preset rotating speed of the driving motor, the rotating speed type of the driving motor is a second type of rotating speed.
For example, if the preset rotation speed is one half of the maximum rotation speed of the driving motor, when the rotation speed of the driving motor is less than one half of the maximum rotation speed of the driving motor, the type of the rotation speed of the driving motor is a first type of rotation speed; and when the rotating speed of the driving motor is greater than or equal to one half of the maximum rotating speed of the driving motor, the rotating speed type of the driving motor is the second type of rotating speed.
Optionally, the determining the connection mode of the winding of the driving motor according to the type of the rotation speed of the driving motor includes:
when the type of the rotating speed of the driving motor is a first type of rotating speed, the connection mode of the winding of the driving motor is a first connection mode;
and when the type of the rotating speed of the driving motor is the second type of rotating speed, the connection mode of the winding of the driving motor is the second connection mode.
For example, if the preset rotation speed is one half of the maximum rotation speed of the driving motor, when the rotation speed of the driving motor is less than one half of the maximum rotation speed of the driving motor, the type of the rotation speed of the driving motor is a first type of rotation speed, and the connection mode of the winding of the driving motor is a first connection mode; when the rotating speed of the driving motor is greater than or equal to one-half of the maximum rotating speed of the driving motor, the rotating speed type of the driving motor is a second type of rotating speed, and the connection mode of the winding of the driving motor is a second connection mode.
Optionally, the drive motor winding coil comprises:
the first end of the U-phase winding coil is grounded, and the second end of the U-phase winding coil is connected with a U-phase lead interface of the driving motor;
a first end of the V-phase winding coil is connected with a first end of the U-phase winding coil, and a second end of the V-phase winding coil is connected with a V lead wire connection port of the driving motor;
and the first end of the W-phase winding coil is connected with the first end of the V-phase winding coil, and the second end of the W-phase winding coil is connected with a W lead wire interface of the driving motor.
The U-phase winding coil, the V-phase winding coil and the W-phase winding coil are further connected with a control board, and the control board determines different connection modes of the driving motor windings according to the rotating speed type of the driving motor.
As shown in fig. 2, the first connection method is:
the U-phase winding coil comprises a first coil and a second coil which are connected in series;
the V-phase winding coil comprises a third coil and a fourth coil which are connected in series;
the W-phase winding coil includes a fifth coil and a sixth coil connected in series.
Specifically, the first end of the U-phase winding coil is grounded, and the negative electrode of the U-phase winding coil is grounded.
Wherein, the outgoing lines of the windings U1+, V1+, W1+, U1-, V1-, W1-, U2+, V2+, W2+, U2-, V2-and W2-are connected to a control board, and the connection mode of the winding coil of the driving motor is controlled to be the first connection mode according to the condition that the rotation speed of the driving motor is the first rotation speed.
As shown in fig. 3, the second connection mode is:
the U-phase winding coil comprises a first coil and a second coil which are connected in parallel;
the V-phase winding coil comprises a third coil and a fourth coil which are connected in parallel;
the W-phase winding coil comprises a fifth coil and a sixth coil which are connected in parallel.
Further, the first end of the U-phase winding coil is grounded, and the negative electrode of the U-phase winding coil is grounded.
Wherein, the outgoing lines of the windings U1+, V1+, W1+, U1-, V1-, W1-, U2+, V2+, W2+, U2-, V2-and W2-are connected to a control board, and the connection mode of the winding coil of the driving motor is controlled to be the second connection mode according to the second rotation speed of the driving motor.
An embodiment of the present invention further provides a winding control device for a driving motor, including:
the acquisition module 10 is used for acquiring the rotating speed of the driving motor and judging the rotating speed type of the driving motor according to the rotating speed of the driving motor;
the determining module 20 is configured to determine a connection mode of the driving motor winding according to the type of the rotation speed of the driving motor;
and the control module 30 is used for controlling the connection of the winding coil of the driving motor according to the connection mode of the winding coil of the driving motor.
The winding control device of the driving motor in the embodiment of the invention adopts different connection modes of the winding coils of the driving motor according to different rotating speeds of the driving motor, so that the flux weakening and speed expanding capacity of the driving motor is enhanced, meanwhile, the connection mode of the winding coils of the driving motor has the advantages of compact structure, easiness in operation and good economical efficiency, and the driving motor with the same volume size can realize higher power density and torque density of the driving motor.
The embodiment of the invention also provides an electric automobile which comprises the winding control device of the driving motor.
According to the winding control method of the driving motor, different connection modes of the winding coils of the driving motor are adopted according to different rotating speeds of the driving motor, the flux weakening and speed expanding capacity of the driving motor is enhanced, meanwhile, the connection mode of the winding coils of the driving motor has the advantages of compact structure, easiness in operation and control and good economical efficiency, the power density and the torque density of the driving motor can be larger with the same size of the driving motor, the highest rotating speed can reach 2 times of those of the traditional driving motor, and the power safety of the whole vehicle is improved.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (10)
1. A winding control method of a drive motor, comprising:
acquiring the rotating speed of a driving motor, and judging the rotating speed type of the driving motor according to the rotating speed of the driving motor;
determining a connection mode of a winding coil of the driving motor according to the rotating speed type of the driving motor;
and controlling the connection of the winding coil of the driving motor according to the connection mode of the winding coil of the driving motor.
2. The winding control method of the driving motor according to claim 1, wherein the determining the type of the rotation speed of the driving motor according to the rotation speed of the driving motor comprises:
when the rotating speed of the driving motor is less than the preset rotating speed of the driving motor, the rotating speed type of the driving motor is a first type of rotating speed;
and when the rotating speed of the driving motor is greater than or equal to the preset rotating speed of the driving motor, the rotating speed type of the driving motor is a second type of rotating speed.
3. The winding control method of the driving motor according to claim 2, wherein the determining the connection mode of the winding of the driving motor according to the type of the rotation speed of the driving motor comprises:
when the type of the rotating speed of the driving motor is a first type of rotating speed, the connection mode of the winding of the driving motor is a first connection mode;
and when the type of the rotating speed of the driving motor is the second type of rotating speed, the connection mode of the winding of the driving motor is the second connection mode.
4. The winding control method of the drive motor according to claim 3, wherein the drive motor winding coil includes:
the first end of the U-phase winding coil is grounded, and the second end of the U-phase winding coil is connected with a U-phase lead interface of the driving motor;
a first end of the V-phase winding coil is connected with a first end of the U-phase winding coil, and a second end of the V-phase winding coil is connected with a V lead wire connection port of the driving motor;
and the first end of the W-phase winding coil is connected with the first end of the V-phase winding coil, and the second end of the W-phase winding coil is connected with a W lead wire interface of the driving motor.
5. The winding control method of the drive motor according to claim 4, wherein the first connection manner is:
the U-phase winding coil comprises a first coil and a second coil which are connected in series;
the V-phase winding coil comprises a third coil and a fourth coil which are connected in series;
the W-phase winding coil includes a fifth coil and a sixth coil connected in series.
6. The winding control method of the drive motor according to claim 4, wherein the first end ground of the U-phase winding coil is a negative electrode ground of the U-phase winding coil.
7. The winding control method of the drive motor according to claim 4, wherein the second connection manner is:
the U-phase winding coil comprises a first coil and a second coil which are connected in parallel;
the V-phase winding coil comprises a third coil and a fourth coil which are connected in parallel;
the W-phase winding coil comprises a fifth coil and a sixth coil which are connected in parallel.
8. The winding control method of the drive motor according to claim 7, wherein the first end ground of the U-phase winding coil is a negative electrode ground of the U-phase winding coil.
9. A winding control apparatus of a drive motor, characterized by comprising:
the acquisition module is used for acquiring the rotating speed of the driving motor and judging the rotating speed type of the driving motor according to the rotating speed of the driving motor;
the determining module is used for determining the connection mode of the driving motor winding according to the rotating speed type of the driving motor;
and the control module is used for controlling the connection of the winding coil of the driving motor according to the connection mode of the winding coil of the driving motor.
10. An electric vehicle characterized by comprising the winding control device of the drive motor according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911390799.9A CN113067521A (en) | 2019-12-30 | 2019-12-30 | Winding control method and device of driving motor and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911390799.9A CN113067521A (en) | 2019-12-30 | 2019-12-30 | Winding control method and device of driving motor and electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN113067521A true CN113067521A (en) | 2021-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911390799.9A Pending CN113067521A (en) | 2019-12-30 | 2019-12-30 | Winding control method and device of driving motor and electric automobile |
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| CN (1) | CN113067521A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3563219A (en) * | 1969-07-23 | 1971-02-16 | Ford Motor Co | Maximum engine speed limiter |
| US4675585A (en) * | 1984-09-07 | 1987-06-23 | Outboard Marine Corporation | Electric vehicle speed control |
| US20060181238A1 (en) * | 2005-02-14 | 2006-08-17 | Lg Electronics Inc. | Variable speed motor |
| JP2012135161A (en) * | 2010-12-24 | 2012-07-12 | Hitachi Appliances Inc | Air conditioner |
| GB2496435A (en) * | 2011-11-10 | 2013-05-15 | Frank Moeller | Poly-phase stator having coils switchable between series and parallel connection |
| CN104092273A (en) * | 2014-07-25 | 2014-10-08 | 中山大洋电机股份有限公司 | Electric vehicle driving and charging integrated control method and electric vehicle operated with same |
| JP2016085005A (en) * | 2014-10-28 | 2016-05-19 | シャープ株式会社 | Refrigeration cycle device |
| CN108390487A (en) * | 2018-01-09 | 2018-08-10 | 凌在汛 | A kind of design method promoting driving motor mechanical property |
| CN109964400A (en) * | 2016-11-24 | 2019-07-02 | 三菱电机株式会社 | Motor drive, refrigerant circuit device and air conditioner |
| CN110168867A (en) * | 2017-02-08 | 2019-08-23 | 日立汽车系统株式会社 | Brushless motor |
-
2019
- 2019-12-30 CN CN201911390799.9A patent/CN113067521A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3563219A (en) * | 1969-07-23 | 1971-02-16 | Ford Motor Co | Maximum engine speed limiter |
| US4675585A (en) * | 1984-09-07 | 1987-06-23 | Outboard Marine Corporation | Electric vehicle speed control |
| US20060181238A1 (en) * | 2005-02-14 | 2006-08-17 | Lg Electronics Inc. | Variable speed motor |
| JP2012135161A (en) * | 2010-12-24 | 2012-07-12 | Hitachi Appliances Inc | Air conditioner |
| GB2496435A (en) * | 2011-11-10 | 2013-05-15 | Frank Moeller | Poly-phase stator having coils switchable between series and parallel connection |
| CN104092273A (en) * | 2014-07-25 | 2014-10-08 | 中山大洋电机股份有限公司 | Electric vehicle driving and charging integrated control method and electric vehicle operated with same |
| JP2016085005A (en) * | 2014-10-28 | 2016-05-19 | シャープ株式会社 | Refrigeration cycle device |
| CN109964400A (en) * | 2016-11-24 | 2019-07-02 | 三菱电机株式会社 | Motor drive, refrigerant circuit device and air conditioner |
| CN110168867A (en) * | 2017-02-08 | 2019-08-23 | 日立汽车系统株式会社 | Brushless motor |
| CN108390487A (en) * | 2018-01-09 | 2018-08-10 | 凌在汛 | A kind of design method promoting driving motor mechanical property |
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