CN112928884A - Novel brushless direct current motor for hydrogen fuel cell system - Google Patents
Novel brushless direct current motor for hydrogen fuel cell system Download PDFInfo
- Publication number
- CN112928884A CN112928884A CN202110311640.4A CN202110311640A CN112928884A CN 112928884 A CN112928884 A CN 112928884A CN 202110311640 A CN202110311640 A CN 202110311640A CN 112928884 A CN112928884 A CN 112928884A
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- Prior art keywords
- motor
- fuel cell
- core
- front cover
- cell system
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 24
- 239000001257 hydrogen Substances 0.000 title claims abstract description 24
- 239000000446 fuel Substances 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 229920006335 epoxy glue Polymers 0.000 claims description 2
- 230000005415 magnetization Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 description 4
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/02—Casings or enclosures characterised by the material thereof
-
- 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
Abstract
The invention relates to a novel brushless direct current motor for a hydrogen fuel cell system, which comprises a stator assembly and a rotor assembly; the stator assembly comprises a shell, a stator core, a lower insulating framework, an upper insulating framework, a coil, a rear cover and a front cover; the rear cover and the front cover are fixedly connected with two ends of the shell, the stator core is fixedly arranged on the inner side of the shell, the lower insulating framework and the upper insulating framework are respectively and fixedly arranged on the axial lower part and the axial upper part of the stator core, and the coil is wound in a stator core notch; the rotor assembly comprises a lower ball bearing, an upper ball bearing, a mandrel, a rotor core and annular magnetic steel; the axial lower part and the axial upper part of the core shaft are fixedly connected with the rear cover and the front cover through a lower ball bearing and an upper ball bearing, the rotor core is fixedly installed on the outer side of the core shaft, and the annular magnetic steel is fixedly installed on the outer side of the rotor core through hot press molding. The invention has the advantages of convenient assembly, stable output torque and low noise.
Description
Technical Field
The invention relates to the technical field of brushless direct current motors, in particular to a novel brushless direct current motor for a hydrogen fuel cell system.
Background
The motor is a novel motor product developed aiming at two core power parts of an air compressor system assembly and a hydrogen circulating pump system assembly of a hydrogen fuel cell system, and has the advantages of stable performance, high efficiency, large power density, small volume, strong installation adaptability and the like. At present, domestic hydrogen pump motor plants are few, with the further improvement of energy conservation and emission reduction of automobiles, new-energy automobiles gradually replace traditional fuel oil automobiles, and hydrogen fuel cells are also taken as a new driving mode of new-energy automobiles, so that the hydrogen pump motor plants have great market prospects.
Brushless dc motor principle: the brushless DC motor adopts an electronic commutation device to replace the traditional mechanical commutation device (commutator and electric brush), not only keeps the good speed regulation and starting characteristics of the DC motor, but also has the advantages of simple structure, convenient maintenance and the like of the AC motor, and the motor has good performance and reliable work, thus the brushless DC motor is rapidly developed in recent years. In conventional dc motors the armature is rotating and the poles are stationary, but in brushless dc motors the poles are rotating and the armature is stationary, and commutation of the armature winding current can be accomplished by means of a position sensor and an electronic switching circuit. A brushless dc motor is generally composed of three parts, a motor, a position sensor, and an electronic switch.
Patent application No. 201921128212.2's a hydrogen circulating pump for fuel cell, the magnet steel is attached towards the piece outer peripheral face and increase the outer stainless steel lag of magnet steel, and the rotor magnet steel of this kind of table formula is fixed on rotor core through the bonding, and its manufacturability is relatively poor, and the assembly difficulty, because the clearance that bonds with glue and magnet steel exists simultaneously, rotor dynamic balance will be difficult to guarantee.
Patent application number is 202010187396.0's an explosion-proof structure hydrogen circulating pump's motor's coil does not establish insulating skeleton, and this form is at the coil winding in-process extremely fragile enameled wire, and the manufacturability is poor, covers non-metallic coating outside the initiative rotor simultaneously, increases the clearance between stator and the rotor indirectly, is unfavorable for magnetism to feel the line and passes through the air gap, will harm the performance of motor.
Disclosure of Invention
To the not enough of above-mentioned prior art, the technical problem that this patent application will solve provides a assembly convenient, and output torque is steady, and the noise is little is used for hydrogen fuel cell system's novel brushless DC motor.
In order to solve the technical problems, the invention adopts the following technical scheme:
a novel brushless DC motor for a hydrogen fuel cell system comprises a stator assembly and a rotor assembly; the stator assembly comprises a shell, a stator core, a lower insulating framework, an upper insulating framework, a coil, a rear cover and a front cover; the rear cover and the front cover are fixedly connected with two ends of the shell, the stator core is fixedly arranged on the inner side of the shell, the lower insulating framework and the upper insulating framework are respectively and fixedly arranged on the axial lower part and the axial upper part of the stator core, and the coil is wound in a stator core notch; the rotor assembly comprises a lower ball bearing, an upper ball bearing, a mandrel, a rotor core and annular magnetic steel; the axial lower part and the axial upper part of the core shaft are fixedly connected with the rear cover and the front cover through a lower ball bearing and an upper ball bearing, the rotor core is fixedly installed on the outer side of the core shaft, and the annular magnetic steel is fixedly installed on the outer side of the rotor core through hot press molding.
The annular magnetic steel is a hot-pressing anisotropic neodymium iron boron magnetic ring, and three pairs of poles are adopted for magnetizing.
Wherein, a gap exists between the stator core and the annular magnetic steel, and the gap is 0.5-1.5 mm.
And the stator core is fixedly arranged in a rabbet on the inner side of the shell through epoxy resin glue.
And the lower insulating framework and the upper insulating framework are fixedly arranged in the stator core notch through epoxy resin glue.
The stator core is in a nine-slot form and is made of a cold-rolled electrical steel strip DW250 series; the rotor core is in a slotless and complete-circle form and is made of a cold-rolled electrical steel strip DW250 series.
Wherein, the lower insulating framework and the upper insulating framework are both made of high-temperature nylon PA 46.
Wherein, the dabber is the ladder axle form, and its material is 30Cr 13.
The rear cover is fixedly connected with the shell through a rear cover gasket and a rear cover bolt; the front cover and the shell are fixedly connected through a front cover bolt and a front cover nut, and a front cover gasket is further arranged between the front cover nut and the shell.
The shell, the rear cover and the front cover are all made of aluminum alloy 2A 12.
In conclusion, the invention adopts the whole circle of the hot-pressed neodymium iron boron magnetic ring capable of being magnetized in multiple poles as the permanent magnet of the motor, has the advantages of convenient rotor assembly, stable output torque and quiet operation, and simultaneously adopts the insulating framework to physically separate the stator core and the enameled wire, thereby not only realizing the insulation between the stator core and the coil, but also ensuring that the enameled wire is not damaged in the stator assembly process, and the invention has good manufacturability, the coil is easy to fix and is beneficial to the whole machine assembly.
Drawings
Fig. 1 is an isometric view of a novel brushless dc motor for a hydrogen fuel cell system in accordance with the present invention.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is an isometric view of a lower or upper insulative frame.
Fig. 5 is an isometric view of the annular magnetic steel.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
As shown in fig. 1-5, a novel brushless dc motor for a hydrogen fuel cell system includes a stator assembly and a rotor assembly; the stator assembly comprises a machine shell 1, a stator iron core 2, a lower insulation framework 3A, an upper insulation framework 3B, a coil 4, a rear cover 5 and a front cover 8; the rear cover and the front cover are fixedly connected with two ends of the shell, the stator core is fixedly arranged on the inner side of the shell, the lower insulating framework and the upper insulating framework are respectively and fixedly arranged on the axial lower part and the axial upper part of the stator core, and the coil is wound in a stator core notch; the rotor assembly comprises a lower ball bearing 12A, an upper ball bearing 12B, a mandrel 13, a rotor core 14 and annular magnetic steel 15; the axial lower part and the axial upper part of the core shaft are fixedly connected with the rear cover and the front cover through a lower ball bearing and an upper ball bearing, the rotor core is fixedly installed on the outer side of the core shaft, and the annular magnetic steel is fixedly installed on the outer side of the rotor core through hot press molding.
In this embodiment, the annular magnetic steel is a hot-pressing anisotropic neodymium-iron-boron magnetic ring, and the magnetization adopts a three-pair-pole form, and the mark is GHM-43R.
In the embodiment, a gap is formed between the stator core and the annular magnetic steel, and the gap is 0.5-1.5 mm.
In this embodiment, the stator core is fixedly mounted in the rabbet on the inner side of the casing through epoxy resin glue.
In this embodiment, lower insulating framework and last insulating framework pass through epoxy glue fixed mounting in the stator core notch.
In the embodiment, the stator core is in a nine-slot form and is made of a cold-rolled electrical steel strip DW250 series; the rotor core is in a slotless and complete-circle form and is made of a cold-rolled electrical steel strip DW250 series.
In this embodiment, the lower insulating frame and the upper insulating frame are both made of high-temperature nylon PA 46.
In this embodiment, the mandrel is in the form of a stepped shaft, and is made of 30Cr 13.
In this embodiment, the rear cover is fixedly connected with the casing through a rear cover gasket 6 and a rear cover bolt 7; the front cover and the machine shell are fixedly connected through a front cover bolt 9 and a front cover nut 11, and a front cover gasket 10 is further arranged between the front cover nut and the machine shell.
In this embodiment, the casing, the rear cover and the front cover are all made of aluminum alloy 2a 12.
Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (10)
1. A novel brushless DC motor for a hydrogen fuel cell system comprises a stator assembly and a rotor assembly; it is characterized in that the preparation method is characterized in that,
the stator assembly comprises a shell, a stator core, a lower insulating framework, an upper insulating framework, a coil, a rear cover and a front cover; the rear cover and the front cover are fixedly connected with two ends of the shell, the stator core is fixedly arranged on the inner side of the shell, the lower insulating framework and the upper insulating framework are respectively and fixedly arranged on the axial lower part and the axial upper part of the stator core, and the coil is wound in a stator core notch;
the rotor assembly comprises a lower ball bearing, an upper ball bearing, a mandrel, a rotor core and annular magnetic steel; the axial lower part and the axial upper part of the core shaft are fixedly connected with the rear cover and the front cover through a lower ball bearing and an upper ball bearing, the rotor core is fixedly installed on the outer side of the core shaft, and the annular magnetic steel is fixedly installed on the outer side of the rotor core through hot press molding.
2. The brushless dc motor as claimed in claim 1, wherein the ring-shaped magnetic steel is a hot pressed anisotropic ndfeb magnet ring, and the magnetization takes the form of three pairs of poles.
3. The brushless dc motor for a hydrogen fuel cell system according to claim 1, wherein a gap is formed between the stator core and the annular magnetic steel, and the gap is 0.5 to 1.5 mm.
4. The brushless dc motor for a hydrogen fuel cell system according to claim 1, wherein the stator core is fixedly mounted in a housing inside spigot by epoxy glue.
5. The brushless dc motor for a hydrogen fuel cell system according to claim 1, wherein the lower insulating bobbin and the upper insulating bobbin are fixedly mounted in the stator core slot by epoxy resin adhesive.
6. The new brushless dc motor for hydrogen fuel cell system according to claim 1, wherein the stator core is in nine-slot form and made of cold rolled electrical steel strip DW250 series; the rotor core is in a slotless and complete-circle form and is made of a cold-rolled electrical steel strip DW250 series.
7. The brushless dc motor for a hydrogen fuel cell system according to claim 1, wherein the lower insulating frame and the upper insulating frame are made of high temperature nylon PA 46.
8. The brushless dc motor for a hydrogen fuel cell system according to claim 1, wherein the core shaft is in the form of a stepped shaft and is made of 30Cr 13.
9. The new brushless dc motor for a hydrogen fuel cell system according to claim 1, wherein the rear cover is fixedly connected to the casing by a rear cover washer and a rear cover bolt; the front cover and the shell are fixedly connected through a front cover bolt and a front cover nut, and a front cover gasket is further arranged between the front cover nut and the shell.
10. The brushless dc motor for a hydrogen fuel cell system according to claim 1, wherein the casing, the rear cover, and the front cover are made of aluminum alloy 2a 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110311640.4A CN112928884A (en) | 2021-03-24 | 2021-03-24 | Novel brushless direct current motor for hydrogen fuel cell system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110311640.4A CN112928884A (en) | 2021-03-24 | 2021-03-24 | Novel brushless direct current motor for hydrogen fuel cell system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112928884A true CN112928884A (en) | 2021-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110311640.4A Pending CN112928884A (en) | 2021-03-24 | 2021-03-24 | Novel brushless direct current motor for hydrogen fuel cell system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112928884A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008236862A (en) * | 2007-03-19 | 2008-10-02 | Yaskawa Electric Corp | Rotor core, rotor, and rotating machine using the rotor |
| JP2009077477A (en) * | 2007-09-19 | 2009-04-09 | Komatsu Ltd | Electric motor |
| US20170305676A1 (en) * | 2016-04-25 | 2017-10-26 | Kamran Ramezani | Motor shaped as a roller |
| US20180062478A1 (en) * | 2016-09-01 | 2018-03-01 | Minebea Mitsumi Inc. | Motor |
| CN110649755A (en) * | 2019-09-30 | 2020-01-03 | 北京泓慧国际能源技术发展有限公司 | Energy storage flywheel device with controllable air gap magnetic field of motor or generator |
| CN210093090U (en) * | 2019-05-23 | 2020-02-18 | 常州韩清机电科技有限公司 | Brushless DC permanent magnet motor with Hall element |
| CN210958016U (en) * | 2019-12-26 | 2020-07-07 | 江西迈得机电配件有限公司 | Brushless motor noise reduction device |
-
2021
- 2021-03-24 CN CN202110311640.4A patent/CN112928884A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008236862A (en) * | 2007-03-19 | 2008-10-02 | Yaskawa Electric Corp | Rotor core, rotor, and rotating machine using the rotor |
| JP2009077477A (en) * | 2007-09-19 | 2009-04-09 | Komatsu Ltd | Electric motor |
| US20170305676A1 (en) * | 2016-04-25 | 2017-10-26 | Kamran Ramezani | Motor shaped as a roller |
| US20180062478A1 (en) * | 2016-09-01 | 2018-03-01 | Minebea Mitsumi Inc. | Motor |
| CN210093090U (en) * | 2019-05-23 | 2020-02-18 | 常州韩清机电科技有限公司 | Brushless DC permanent magnet motor with Hall element |
| CN110649755A (en) * | 2019-09-30 | 2020-01-03 | 北京泓慧国际能源技术发展有限公司 | Energy storage flywheel device with controllable air gap magnetic field of motor or generator |
| CN210958016U (en) * | 2019-12-26 | 2020-07-07 | 江西迈得机电配件有限公司 | Brushless motor noise reduction device |
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| 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 | ||
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Application publication date: 20210608 |