CN112531944A - Double-insulation permanent magnet brushless motor - Google Patents
Double-insulation permanent magnet brushless motor Download PDFInfo
- Publication number
- CN112531944A CN112531944A CN202011386470.8A CN202011386470A CN112531944A CN 112531944 A CN112531944 A CN 112531944A CN 202011386470 A CN202011386470 A CN 202011386470A CN 112531944 A CN112531944 A CN 112531944A
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- CN
- China
- Prior art keywords
- insulation
- double
- stator
- winding
- stator core
- 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
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/30—Windings characterised by the insulating material
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/08—Insulating casings
Abstract
The invention discloses a double-insulation permanent magnet brushless motor which comprises basic insulation, a winding, a stator core, additional insulation, a stator shell, a bearing and a rotor optical axis, wherein the winding is wound on the stator core, the basic insulation is arranged between the winding and the stator core, and the basic insulation is made of an insulating material; an additional insulating layer is arranged between the stator core and the stator casing, the stator casing is sleeved on the rotor optical axis, a bearing is arranged between the rotor optical axis and the stator casing, and the additional insulating layer is made of an insulating material. A layer of basic insulation is arranged between the winding and the stator core to separate the winding and the stator core, and an additional insulation layer is designed between the stator core and the stator casing to form double insulation protection.
Description
Technical Field
The invention relates to a double-insulation permanent magnet brushless motor, and belongs to the technical field of brushless motors.
Background
As the demand for products powered by dc batteries is increasing in the market, the demand for dc permanent magnet brushless motors is also increasing, and dc permanent magnet brushless motors are becoming widely used in various products; the direct current permanent magnet brushless motor used in the current market is generally of a single insulation structure, and particularly, the outer rotor type direct current brushless motor only has a single insulation structure in the market due to the structural particularity; for high-voltage direct-current products exceeding the safety voltage limit value, special protection structures need to be made on the products by using a single-insulation motor; if the machine components such as the washing machine and a part of the garden tool are supplied with direct current high voltage, the motor of the machine components is required to be a double-insulation structure motor.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a double-insulation permanent magnet brushless motor which is used on a machine part powered by high-voltage direct current.
In order to achieve the above object, the present invention provides a double-insulated permanent magnet brushless motor, comprising a basic insulation, a winding, a stator core, an additional insulation, a stator housing, a bearing and a rotor optical axis,
the winding is wound on the stator core, basic insulation is arranged between the winding and the stator core, and the basic insulation is made of insulating materials;
an additional insulating layer is arranged between the stator core and the stator casing, the stator casing is sleeved on the rotor optical axis, a bearing is arranged between the rotor optical axis and the stator casing, and the additional insulating layer is made of an insulating material.
Preferably, the material of the additional insulating layer is at least one of epoxy resin, bulk molding compound, phenol resin, and poly (tetramethylene terephthalate).
Preferably, the thickness of the additional insulating layer is greater than mm.
Preferably, the coils of the winding are enameled wires.
Preferably, the primary insulation is at least one of mylar, DMD insulation paper, grey paper, nylon coating, and epoxy insulation coating material.
Preferably, the material of the additional insulating layer is polyphenylene sulfide.
The invention achieves the following beneficial effects:
the invention provides a double-insulation outer rotor direct current brushless motor, wherein a layer of basic insulation is arranged between a winding and a stator core to separate the winding from the stator core, an additional insulation layer is arranged between the stator core and a stator casing, and the outer rotor direct current brushless motor with the double-insulation structure can be used in a high-voltage product without additional grounding protection due to the design that the charged body has the layer of basic insulation and the layer of additional insulation from a motor output shaft.
Drawings
Fig. 1 is a cross-sectional view of the present device.
Labeled meaning in the figures, 1-basic insulation; 2-winding; 3-a stator core; 4-additional insulation; 5-a stator housing; 6-rotor optic axis.
Detailed Description
The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
A double-insulation permanent magnet brushless motor comprises a basic insulation, a winding, a stator core, an additional insulation, a stator casing, a bearing and a rotor optical axis,
the winding is wound on the stator core, basic insulation is arranged between the winding and the stator core, and the basic insulation is made of insulating materials;
an additional insulating layer is arranged between the stator core and the stator casing, the stator casing is sleeved on the rotor optical axis, a bearing is arranged between the rotor optical axis and the stator casing, and the additional insulating layer is made of an insulating material.
Further, in this embodiment, the material of the additional insulating layer is at least one of epoxy resin, bulk molding compound, phenolic resin, and poly (tetramethylene terephthalate).
Further, in this embodiment, the thickness of the additional insulating layer is greater than mm.
Further, in this embodiment, the coil of the winding is an enameled wire.
Further, in the present embodiment, the basic insulation is at least one of mylar, DMD insulation paper, grey paper, nylon coating, and epoxy insulation coating material.
Further, in this embodiment, the material of the additional insulating layer is polyphenylene sulfide.
The PBT plastic is a plastic Polybutylene terephthalate (Polybutylene terephthalate) which is mainly composed of Polybutylene terephthalate, namely, polytetramethylene terephthalate, and is called PBT for short. The DMD is a composite insulating material product, named DMD for short, which is made by coating a layer of polyester film with adhesive, compounding polyester fiber non-woven fabric on one surface and calendering.
The winding 2, the stator core, the stator casing, the bearing and the rotor optical axis can be in various types in the prior art, and those skilled in the art can select a suitable type according to actual requirements, and the embodiment is not illustrated.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A double-insulation permanent magnet brushless motor is characterized by comprising basic insulation (1), a winding (2), a stator iron core (3), additional insulation (4), a stator casing (5), a bearing and a rotor optical axis (6),
the winding (2) is wound on the stator core (3), basic insulation (1) is arranged between the winding (2) and the stator core (3), and the basic insulation (1) is made of an insulating material;
an additional insulating layer (4) is arranged between the stator core (3) and the stator casing (5), the stator casing (5) is sleeved on the rotor optical axis (6), a bearing is arranged between the rotor optical axis (6) and the stator casing (5), and the additional insulating layer (4) is made of an insulating material.
2. A double-insulated permanent-magnet brushless electric machine according to claim 1, characterized in that the material of the additional insulating layer (4) is at least one of epoxy resin, bulk molding compound, phenolic resin and poly (tetramethylene terephthalate).
3. A double insulated permanent magnet brushless electric machine according to claim 1, characterized in that the thickness of the additional insulating layer (4) is more than 1 mm.
4. A brushless permanent magnet motor according to claim 1, wherein the windings (2) are enameled wires.
5. A double-insulated permanent-magnet brushless electric machine according to claim 1, characterized in that the basic insulation (1) is at least one of mylar, DMD insulation paper, grey paper, nylon coating and epoxy insulation coating material.
6. A double-insulated permanent-magnet brushless electric machine according to claim 1, characterized in that the material of the additional insulating layer (4) is polyphenylene sulfide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011386470.8A CN112531944A (en) | 2020-12-02 | 2020-12-02 | Double-insulation permanent magnet brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011386470.8A CN112531944A (en) | 2020-12-02 | 2020-12-02 | Double-insulation permanent magnet brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112531944A true CN112531944A (en) | 2021-03-19 |
Family
ID=74995922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011386470.8A Pending CN112531944A (en) | 2020-12-02 | 2020-12-02 | Double-insulation permanent magnet brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112531944A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10108398A (en) * | 1996-09-27 | 1998-04-24 | Sanyo Electric Co Ltd | Electric motor and its manufacturing method |
| CN201315511Y (en) * | 2008-12-12 | 2009-09-23 | 鞍钢集团铁路运输设备制造公司 | Novel insulation structure of industrial and mining traction motor |
| JP2018125898A (en) * | 2017-01-30 | 2018-08-09 | アイシン精機株式会社 | Rotary electric machine |
| CN109067064A (en) * | 2018-09-27 | 2018-12-21 | 滁州市润德电子科技有限公司 | A kind of double insulating permanent magnet brushless motors |
| CN110945755A (en) * | 2017-07-21 | 2020-03-31 | 株式会社电装 | Rotating electrical machine |
-
2020
- 2020-12-02 CN CN202011386470.8A patent/CN112531944A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10108398A (en) * | 1996-09-27 | 1998-04-24 | Sanyo Electric Co Ltd | Electric motor and its manufacturing method |
| CN201315511Y (en) * | 2008-12-12 | 2009-09-23 | 鞍钢集团铁路运输设备制造公司 | Novel insulation structure of industrial and mining traction motor |
| JP2018125898A (en) * | 2017-01-30 | 2018-08-09 | アイシン精機株式会社 | Rotary electric machine |
| CN110945755A (en) * | 2017-07-21 | 2020-03-31 | 株式会社电装 | Rotating electrical machine |
| CN109067064A (en) * | 2018-09-27 | 2018-12-21 | 滁州市润德电子科技有限公司 | A kind of double insulating permanent magnet brushless motors |
Non-Patent Citations (1)
| Title |
|---|
| 张知先: "《合成树脂和塑料牌号手册》", 30 June 1996, 化学工业出版社 * |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210319 |
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| RJ01 | Rejection of invention patent application after publication |