CN105978252A - Production method for driving motor rotor internally provided with radial magnetic-field rare-earth permanent magnet steel - Google Patents
Production method for driving motor rotor internally provided with radial magnetic-field rare-earth permanent magnet steel Download PDFInfo
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- CN105978252A CN105978252A CN201610306565.1A CN201610306565A CN105978252A CN 105978252 A CN105978252 A CN 105978252A CN 201610306565 A CN201610306565 A CN 201610306565A CN 105978252 A CN105978252 A CN 105978252A
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- Prior art keywords
- magnet steel
- rotor
- shape
- permanent magnet
- inverted
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a production method for a driving motor rotor internally provided with radial magnetic-field rare-earth permanent magnet steel, and belongs to the technical field of motors and electric appliances of electromobile. Rectangular permanent magnet steel is embedded in rectangular radial grooves of a rotor core. A magnetic bypass structure of the rotor can effectively solve the problem that irreversible demagnetization is generated when the permanent magnet steel is subjected to the armature reaction effect of impact current, it is ensured the permanent magnet steel is not demagnetized, the magnetic field of each pole of the driving motor rotor is provided by two pieces of permanent magnet steel together, the intensity of the magnetic field is high, output power is high, the efficiency is high, power density is high, the structure is compact, and work is reliable.
Description
Technical field
The present invention provides a kind of built-in radial magnetic field rare-earth permanent magnet steel to drive rotor production method, belongs to motor in electric automobile technical field of electric appliances.
Background technology
nullThe production method of the permanent magnet drive motor rotor used on electric automobile at present uses the outer damascene structures of permanent magnet mostly，Such as prior art，Patent name: brushless DC motor rotor，The patent No.: ZL200920116549.1，Disclose following technical scheme，Including rotor core、Rotating shaft and permanent magnet，Rotor core is made up of punching superposition and is connected，Rotating shaft is fixing with rotor core to be connected，The outer surface of rotor core is evenly distributed with even number T-shaped voussoir，Slot is constituted between adjacent T-shaped voussoir，Permanent magnet correspondence is embedded in slot，The permanent magnet of this construction rotor is directly facing air gap，Under the armature-reaction effect of dash current，Irreversible demagnetization may be produced，Permanent magnet once forms irreversible demagnetization，Driving electric efficiency reduces、Power、Moment of torsion declines rapidly，Its serviceability needs further improvement.
Summary of the invention
It is an object of the invention to provide one and can overcome drawbacks described above, rectangle permanent-magnet steel is embedded in the rectangular slot of rotor core, this structure is rotor magnetic bypass structure, can effectively prevent permanent-magnet steel from producing irreversible demagnetization problem under the armature-reaction effect of dash current, ensureing that the built-in radial magnetic field rare-earth permanent magnet steel of permanent-magnet steel not loss of excitation drives rotor production method, its technology contents is:
nullBuilt-in radial magnetic field rare-earth permanent magnet steel drives rotor production method，It is characterized in that: punching annular rotor punching，Even number is distributed on rotor punching and runs through the rectangular slot of rotor punching thickness，Two adjacent rectangular slots form inverted "eight" shape or positive "eight" shape，The inner edge of rectangular slot、Outside is dome arc，The sagitta of dome arc is 1mm，There is the not connected component of 1.5mm the inner of two rectangular slots forming inverted "eight" shape，There is the not connected component of 1.5mm the outer end of two rectangular slots forming positive "eight" shape，The not connected component of 1.5mm is had between outer end and the cylindrical of rotor punching of rectangular slot，Do not connect between the inner and the inner circle of rotor punching of rectangular slot，W type groove is had on rotor punching cylindrical，Rotor punching is laminated by burr direction mode in one direction，The mode using argon arc welding welds the mid portion laminating rear rotor punching W type groove，Form rotor core；
In two rectangular slots of the inverted "eight" shape that identical two panels rectangle permanent-magnet steel is respectively placed at rotor core and the inner side of inverted "eight" shape that formed of two panels rectangle permanent-magnet steel is N pole, in identical other two panels rectangle permanent-magnet steel is respectively placed at inverted "eight" shape groove that adjacent two other rectangular slot of rotor core is formed again and the inner side of inverted "eight" shape that formed of two panels rectangle permanent-magnet steel is S pole, the like, form N pole, the most spaced p-m rotor of S, rotor core is fitted on axle, complete built-in radial magnetic field rare-earth permanent magnet steel and drive the assembling of rotor.
The present invention is compared with prior art, rectangle permanent-magnet steel is embedded in the rectangular slot of rotor core, this structure is rotor magnetic bypass structure, can effectively prevent the problem that permanent-magnet steel produces irreversible demagnetization under the armature-reaction effect of dash current, ensureing permanent-magnet steel not loss of excitation, the magnetic field simultaneously driving each magnetic pole of rotor is provided jointly by two panels permanent-magnet steel, and magnetic field intensity is big, output is high, has the features such as high efficiency, high power density, compact conformation, reliable operation.
Accompanying drawing explanation
Fig. 1 is the production process flow chart of the present invention.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
nullBuilt-in radial magnetic field rare-earth permanent magnet steel drives rotor production method，It is characterized in that: punching annular rotor punching，Even number is distributed on rotor punching and runs through the rectangular slot of rotor punching thickness，Two adjacent rectangular slots form inverted "eight" shape or positive "eight" shape，The inner edge of rectangular slot、Outside is dome arc，The sagitta of dome arc is 1mm，There is the not connected component of 1.5mm the inner of two rectangular slots forming inverted "eight" shape，There is the not connected component of 1.5mm the outer end of two rectangular slots forming positive "eight" shape，The not connected component of 1.5mm is had between outer end and the cylindrical of rotor punching of rectangular slot，Do not connect between the inner and the inner circle of rotor punching of rectangular slot，W type groove is had on rotor punching cylindrical，Rotor punching is laminated by burr direction mode in one direction，The mode using argon arc welding welds the mid portion laminating rear rotor punching W type groove，Form rotor core；
In two rectangular slots of the inverted "eight" shape that identical two panels rectangle permanent-magnet steel is respectively placed at rotor core and the inner side of inverted "eight" shape that formed of two panels rectangle permanent-magnet steel is N pole, in identical other two panels rectangle permanent-magnet steel is respectively placed at inverted "eight" shape groove that adjacent two other rectangular slot of rotor core is formed again and the inner side of inverted "eight" shape that formed of two panels rectangle permanent-magnet steel is S pole, the like, form N pole, the most spaced p-m rotor of S, rotor core is fitted on axle, complete built-in radial magnetic field rare-earth permanent magnet steel and drive the assembling of rotor.
Claims (1)
- null1. a built-in radial magnetic field rare-earth permanent magnet steel drives rotor production method，It is characterized in that: punching annular rotor punching，Even number is distributed on rotor punching and runs through the rectangular slot of rotor punching thickness，Two adjacent rectangular slots form inverted "eight" shape or positive "eight" shape，The inner edge of rectangular slot、Outside is dome arc，The sagitta of dome arc is 1mm，There is the not connected component of 1.5mm the inner of two rectangular slots forming inverted "eight" shape，There is the not connected component of 1.5mm the outer end of two rectangular slots forming positive "eight" shape，The not connected component of 1.5mm is had between outer end and the cylindrical of rotor punching of rectangular slot，Do not connect between the inner and the inner circle of rotor punching of rectangular slot，W type groove is had on rotor punching cylindrical，Rotor punching is laminated by burr direction mode in one direction，The mode using argon arc welding welds the mid portion laminating rear rotor punching W type groove，Form rotor core；In two rectangular slots of the inverted "eight" shape that identical two panels rectangle permanent-magnet steel is respectively placed at rotor core and the inner side of inverted "eight" shape that formed of two panels rectangle permanent-magnet steel is N pole, in identical other two panels rectangle permanent-magnet steel is respectively placed at inverted "eight" shape groove that adjacent two other rectangular slot of rotor core is formed again and the inner side of inverted "eight" shape that formed of two panels rectangle permanent-magnet steel is S pole, the like, form N pole, the most spaced p-m rotor of S, rotor core is fitted on axle, complete built-in radial magnetic field rare-earth permanent magnet steel and drive the assembling of rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610306565.1A CN105978252A (en) | 2016-05-11 | 2016-05-11 | Production method for driving motor rotor internally provided with radial magnetic-field rare-earth permanent magnet steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610306565.1A CN105978252A (en) | 2016-05-11 | 2016-05-11 | Production method for driving motor rotor internally provided with radial magnetic-field rare-earth permanent magnet steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105978252A true CN105978252A (en) | 2016-09-28 |
Family
ID=56992087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610306565.1A Pending CN105978252A (en) | 2016-05-11 | 2016-05-11 | Production method for driving motor rotor internally provided with radial magnetic-field rare-earth permanent magnet steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105978252A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090322175A1 (en) * | 2008-06-27 | 2009-12-31 | Hitachi, Ltd. | Permanent-magnet type electric rotating machine and permanent-magnet type electric rotating machine system for automobile or train |
| US20120032539A1 (en) * | 2010-08-09 | 2012-02-09 | Hitachi, Ltd. | Permanent Magnet Rotating Machine |
| CN103887937A (en) * | 2014-04-10 | 2014-06-25 | 山东理工大学 | Production method of built-in permanent magnet rotor of electric vehicle hub driving motor |
| CN203883573U (en) * | 2014-05-26 | 2014-10-15 | 大洋电机新动力科技有限公司 | Motor rotor and permanent-magnet synchronous motor using same |
| CN105453387A (en) * | 2013-08-05 | 2016-03-30 | 三菱电机株式会社 | Permanent magnet embedded type rotating electric machine |
-
2016
- 2016-05-11 CN CN201610306565.1A patent/CN105978252A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090322175A1 (en) * | 2008-06-27 | 2009-12-31 | Hitachi, Ltd. | Permanent-magnet type electric rotating machine and permanent-magnet type electric rotating machine system for automobile or train |
| US20120032539A1 (en) * | 2010-08-09 | 2012-02-09 | Hitachi, Ltd. | Permanent Magnet Rotating Machine |
| CN105453387A (en) * | 2013-08-05 | 2016-03-30 | 三菱电机株式会社 | Permanent magnet embedded type rotating electric machine |
| CN103887937A (en) * | 2014-04-10 | 2014-06-25 | 山东理工大学 | Production method of built-in permanent magnet rotor of electric vehicle hub driving motor |
| CN203883573U (en) * | 2014-05-26 | 2014-10-15 | 大洋电机新动力科技有限公司 | Motor rotor and permanent-magnet synchronous motor using same |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160928 |