CN115580058A - Split-charging type high-speed permanent magnet direct current generator - Google Patents
Split-charging type high-speed permanent magnet direct current generator Download PDFInfo
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- CN115580058A CN115580058A CN202211349856.0A CN202211349856A CN115580058A CN 115580058 A CN115580058 A CN 115580058A CN 202211349856 A CN202211349856 A CN 202211349856A CN 115580058 A CN115580058 A CN 115580058A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000009434 installation Methods 0.000 claims abstract description 8
- 229920000271 Kevlar® Polymers 0.000 claims description 6
- 239000004761 kevlar Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 210000000664 rectum Anatomy 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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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
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- 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
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K23/00—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors
- H02K23/02—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting
- H02K23/04—DC commutator motors or generators having mechanical commutator; Universal AC/DC commutator motors characterised by arrangement for exciting having permanent magnet excitation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a split-charging type high-speed permanent magnet direct current generator, which comprises a mounting shell, a motor assembly main shell and a motor assembly fixing device, wherein the mounting shell is provided with an assembly fastening end part and a motor assembly shell; the stator assembly comprises an iron core and a coil which are fixed on the inner wall of the motor assembly main shell; the rotor subassembly is including wearing to establish the rotor in the coil, and the rotor center is seted up and is supported the outer drive axle assembly latus rectum in the coil with its periphery and coil inner wall equidistance suspension. Compared with the prior slotted structure in which the coil is wound in the slot, the slotted structure has the advantages that the space for placing the coil is enlarged, the turns of the winding coil which can be placed are more, the wire diameter is larger, and the generator has the performance of higher power density. The high-power-density heat dissipation device can adapt to a complex installation environment, has more space for heat dissipation to obtain higher performance under the condition of realizing high power density performance, does not depend on a bearing at high speed, and has the advantages of low equipment maintenance cost and the like.
Description
Technical Field
The invention relates to the technical field of permanent magnet direct current generators, in particular to a split-charging type high-speed permanent magnet direct current generator.
Background
The micromotor is a motor with small volume and capacity and rated output power generally less than 750W and below, and is called a micromotor. With the innovation and the application of new technology, new material and new process in the household appliance micro and special motor industry, the technical level of the industry is continuously improved. The development trend of the micromotor industry is energy conservation, high efficiency, permanent magnetization, brushless, precision and intellectualization.
The permanent magnet direct current generator adopts high-performance permanent magnet steel excitation, is less influenced by temperature change, has small output change, high slope and small linear error. The permanent magnet type transformer has wide application because no additional excitation power supply is needed and the output voltage is not influenced by the temperature change of the excitation winding.
The permanent magnet direct current generator structure is formed by assembling a classical motor structure, a general motor is of an integral structure, a rotor part of the motor further comprises a motor shaft, two ends of the shaft are fixed through end covers and bearings and cannot be detached, so that the number of parts is large, errors are accumulated to be high, the motor quality is large, installation limitation is large, and the like. And integral enclosed construction makes the motor radiating effect not enough for motor rotational speed can not effectual improvement, and then the power density that shows motor performance can not effectively improve, leads to the increase of motor energy consumption and the increase of iron loss and copper loss, and then influences the life of motor, increases later stage cost of maintenance, and encapsulated type overall structure's motor can not be adapted to the assembly of complex environment simultaneously, and application range is limited.
Disclosure of Invention
In view of the above problems, the present invention is directed to a split-charging type high-speed permanent-magnet dc generator, which adopts a split-charging type assembly structure, and is applicable to a complex environment, and the structure can achieve higher power density, and reduce the maintenance cost of the motor.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a split charging type high-speed permanent magnet direct current generator is characterized by comprising:
the mounting shell sequentially comprises a mounting fastening end part and a motor assembling shell, and a motor assembling main shell is fixedly suspended in the motor assembling shell;
the stator assembly comprises an iron core fixed on the inner wall of the motor assembly main shell and a coil fixed on the inner wall of the iron core;
the rotor subassembly includes wears to establish with non-contact state rotor in the coil, rotor center seted up with its periphery with coil inner wall equidistance suspension supports outer drive axle assembly latus rectum in the coil.
Preferably, the inner wall of the motor assembly main shell is provided with a positioning step for positioning and assembling the iron core, the outer end of the motor assembly main shell is further in threaded connection with an end cover, and a positioning block connected with the end cover is fixed at the outer end of the iron core.
Preferably, the positioning block is of a conical ring structure, the side wall of the positioning block is composed of a horizontal circumferential surface abutting against the inner wall of the motor assembling main shell and a horizontal conical surface abutting against the end cover, and a positioning conical surface in flat contact with the horizontal conical surface is arranged on the inner side of the end cover.
Preferably, the outer wall of the rotor is wound with a Kevlar fiber layer.
The invention has the beneficial effects that:
1. performance aspects: compared with the prior slotted structure in which the iron core is slotted, the slotted structure in which the coil is wound in the slot has the advantages that the space for placing the coil is enlarged, the turns of the coil of the winding which can be placed are more, the wire diameter is larger, the generator can have the performance of higher power density, the power density is higher than 2600W/kg, the rotating speed can reach 130000rpm at most, and the indexes are greatly improved compared with the conventional motor.
2. In the structural aspect: the generator adopts a split-type structure, can adapt to a complex installation environment, has more space for heat dissipation to obtain higher performance under the condition of realizing high power density performance, does not depend on a bearing at high speed, reduces the maintenance cost of equipment and the like;
the conventional motor adopts an integral structure, the rotor part of the motor further comprises a motor shaft, and two ends of the shaft are fixed through end covers and bearings and cannot be disassembled. The motor rotor does not have a motor shaft, and the rotor part does not have a bearing structure, so that the rotor is directly arranged on the power shaft, an additional installation structure is omitted, the space is saved, the bearing structure is omitted, and higher reliability and longer service life are realized;
the rotor assembly has no motor rotating shaft, the stator assembly also has no end cover bearing structure, so that the assembly error accumulation is reduced, the number of parts and abrasion resistance are reduced, the rotating speed and the power density of the motor are effectively improved, and the motor assembly can be separated from the driving shaft for multiple times for assembly.
3. In the aspect of materials: the Kevlar fiber layer is adopted for fixing the periphery of the rotor magnetic steel, and compared with the traditional carbon fiber and metal material protective layers, the rotor magnetic steel has the advantages of good insulativity, high strength, reduced eddy current loss and improved motor efficiency.
Drawings
Fig. 1 is a three-dimensional structure diagram of the split-charging type high-speed permanent magnet direct current generator.
Fig. 2 is a front view structural diagram of the split-charging type high-speed permanent magnet direct current generator of the invention.
Fig. 3 is a right side view of fig. 2 of the present invention.
Fig. 4 is a cross-sectional view of fig. 2 of the present invention.
FIG. 5 is an enlarged view of the structure at A in FIG. 4 according to the present invention.
FIG. 6 is an enlarged view of the structure of FIG. 5 at B in accordance with the present invention.
Fig. 7 is a view of the present invention showing the structure of the rotor assembly not shown in fig. 4.
FIG. 8 is an enlarged view of the structure of FIG. 7 at C.
Fig. 9 is a structural view of a rotor assembly of the present invention.
Fig. 10 is a view showing the structure of the rotor assembly of the present invention engaged with a driving shaft.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description will be made with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 10, a split-charging type high-speed permanent magnet dc generator includes:
the mounting housing 1, as shown in fig. 1, comprises in sequence a mounting fastening end portion 11 and a motor mounting housing 12, wherein a motor mounting main housing 13 is fixedly suspended in the motor mounting housing 12. The assembling fastening end 11 preferably has a flange hole 110 along the circumferential direction, through which the mounting housing 1, and thus the motor assembling housing 12 and the motor assembling main housing 13, can be fixed in position.
And a stator assembly including a core 2 fixed to an inner wall of the motor assembly main housing 13, and a coil 3 fixed to an inner wall of the core 2. As shown in fig. 8, a positioning step 13a for positioning and assembling the iron core 2 is formed on the inner wall of the main motor assembly housing 13, the iron core 2 is pressed in from the outer end of the main motor assembly housing 13 by a press-fitting process until the inner end of the iron core 2 abuts against the positioning step 13a to realize positioning, and the outer wall of the iron core 2 and the inner wall of the main motor assembly housing 13 are coated with glue during press-fitting to fill an assembly gap between the outer wall of the iron core 2 and the inner wall of the main motor assembly housing 13. And the coil 3 is separately wound into a cylindrical structure and is adhered to the inner wall of the iron core 2 by adopting an adhesive mode to form an integral fastening structure.
Compared with the prior slotted structure in which the iron core is slotted, the slotted structure in which the coil is wound in the slot has the advantages that the space for placing the coil is enlarged, the turns of the winding coil which can be placed are more, the wire diameter is larger, and the generator has the performance of higher power density.
The motor assembling main shell 13 fixedly suspended in the motor assembling shell 12 can generate heat to dissipate from openings at two sides of the motor assembling main shell 13 under the operating state that a rotor in the motor assembling main shell is driven by a driving shaft of external equipment at a high rotating speed, and the heat dissipated from the inner end of the motor assembling main shell 13 to the assembling fastening end part 11 can be dissipated through a through cavity formed between the outer wall of the motor assembling main shell 13 and the inner wall of the motor assembling shell 12, so that the sufficient heat dissipation effect of the generator can be ensured under the operating state of the high rotating speed of the generator.
In order to limit the outer end of the iron core 2 by the positioning step 13a, as shown in fig. 6, the outer end of the motor assembling main housing 13 is further connected with an end cover 14 in a threaded manner, and a positioning block 15 connected with the end cover 14 is fixed at the outer end of the iron core 2. The positioning block 15 is preferably welded with the iron core 2, after the iron core 2 is pressed, the positioning block 15 is welded and fastened with the outer end face of the iron core 2, and finally, the outer end of the iron core 2 is positioned by screwing the end cover 14 and abutting against the outer end of the positioning block 15.
Preferably, as shown in fig. 6, the positioning block 15 has a conical ring structure, a side wall of the positioning block is composed of a horizontal peripheral surface 15a abutting against an inner wall of the motor assembly main housing 13 and a horizontal tapered surface 15b abutting against the end cover 14, and a positioning tapered surface 14a in flat contact with the horizontal tapered surface 15b is provided inside the end cover 14. In the process that the end cover 14 abuts against the outer end of the positioning block 15, the positioning conical surface 14a of the end cover 14 gradually contacts and abuts against the horizontal conical surface 15b of the positioning block 15, and the conical matching structure can limit radial deviation of the positioning block 15, the iron core 2 and the coil 3 relative to the motor assembling main shell 13 through the end cover 14, so that the equal spacing performance of the inner wall of the coil 3 and the outer peripheral surface of the rotor 4 to be described later along the circumferential direction is ensured, the defect that the coil 3 contacts the rotor 4 after radial deviation due to high-speed rotation external force is avoided, and the improvement of the rotating speed of the rotor 4 and the increase of the high power density of a generator are facilitated.
The rotor assembly, as shown in fig. 5 and 9-10, includes a rotor 4 passing through the coil 3 in a non-contact state, and the center of the rotor 4 is provided with an external driving shaft assembly path 401 for suspending and supporting the periphery of the rotor and the inner wall of the coil 3 in an equal distance in the coil 3. When the generator is used specifically, the rotor 4 is sleeved on a driving shaft (shown in figure 8) of external driving equipment through an external driving shaft assembling drift diameter 401, matching threads are reserved at corresponding positions of the driving shaft for mounting the rotor 4, two ends of the rotor 4 are positioned and clamped and fastened relative to the driving shaft through positioning nuts 6 and fastening nuts 7, on the basis of secondary assembly, the mounting shell 1 and the whole stator assembly are sleeved on the outer side of the rotor 4 at equal intervals through the inner wall of a coil 3, and the mounting shell 1 and the stator assembly are positioned and fastened relative to the rotor 4 through a flange hole, so that the assembly of the generator and the forming of the using state of the generator are realized.
The high-rotation-speed rotation driving force is provided for the rotor 4 through the driving shaft, the electric energy is generated through electromagnetic induction of the stator assembly, in the operation structure, the size of the iron core 2 is reduced compared with that of the traditional structure, the iron loss of the iron core 2 is further reduced, the iron core is of a slotless structure, and the influence of a tooth socket effect is eliminated.
The Kevlar fiber layer 5 is wound on the outer wall of the rotor 4, so that the faults that the rotor magnetic steel is fallen off when rotating at a high speed and the like can be avoided, the volume and the weight of the motor are effectively reduced while the structural reliability is ensured, and the loss of the generator is effectively reduced due to no electric conductivity of the motor.
A hall sensor (not shown) for measuring the rotational speed of the rotor 4 is arranged inside the end cover 14.
The generator of the application is compared with the performance parameters of the existing motors with the same specification as follows (the diameter specification of the generator is 32mm, the length of the generator is about 60mm, and the existing motors 1-3 adopt the parameters with the same specification as the application):
1. ultra-high speed: the working speed of the generator can reach 130000rpm at most, and the single working time is not less than 45 minutes;
2. high power density: the motor volume of the motor is only 13.5cm 3 The weight is about 250g, the power is more than 650W, and the power density is more than 2600W/kg;
3. a Kevlar protective layer is wound outside the rotor magnetic steel by using a high-temperature-resistant and high-strength Kevlar wire drawing and winding process, so that the faults of falling off and the like caused by high-speed running of the rotor magnetic steel can be avoided, the structural reliability is ensured, and the size and the weight of the motor are effectively reduced.
The motor split charging type structure is compact in structure and easy to install: can be suitable for complex installation environments such as various narrow spaces, special-shaped installation surfaces and the like.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A split charging type high-speed permanent magnet direct current generator is characterized by comprising:
the motor assembling device comprises an installation shell (1) and a motor assembling device, wherein the installation shell (1) sequentially comprises an assembling fastening end part (11) and a motor assembling shell (12), and a motor assembling main shell (13) is fixedly suspended in the motor assembling shell (12);
the stator assembly comprises an iron core (2) fixed on the inner wall of the motor assembly main shell (13) and a coil (3) fixed on the inner wall of the iron core (2);
the rotor assembly comprises a rotor (4) which is arranged in the coil (3) in a penetrating mode in a non-contact state, and an outer driving shaft assembling drift diameter (401) which is used for suspending and supporting the periphery of the rotor (4) and the inner wall of the coil (3) in an equal distance mode is formed in the center of the rotor (4).
2. The split charging type high-speed permanent magnet direct current generator according to claim 1, characterized in that: the inner wall of the motor assembly main shell (13) is provided with a positioning step (13 a) for positioning and assembling the iron core (2), the outer end of the motor assembly main shell (13) is further connected with an end cover (14) in a threaded manner, and a positioning block (15) connected with the end cover (14) is fixed at the outer end of the iron core (2).
3. The split charging type high-speed permanent magnet direct current generator according to claim 2, wherein: the positioning block (15) is of a conical ring structure, the side wall of the positioning block is composed of a horizontal peripheral surface (15 a) which is abutted against the inner wall of the motor assembling main shell (13) and a horizontal conical surface (15 b) which is abutted against the end cover (14), and a positioning conical surface (14 a) which is in flat contact with the horizontal conical surface (15 b) is arranged on the inner side of the end cover (14).
4. The split charging type high-speed permanent magnet direct current generator according to claim 3, wherein: and the outer wall of the rotor (4) is wound with a Kevlar fiber layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211349856.0A CN115580058A (en) | 2022-10-31 | 2022-10-31 | Split-charging type high-speed permanent magnet direct current generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211349856.0A CN115580058A (en) | 2022-10-31 | 2022-10-31 | Split-charging type high-speed permanent magnet direct current generator |
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| Publication Number | Publication Date |
|---|---|
| CN115580058A true CN115580058A (en) | 2023-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211349856.0A Pending CN115580058A (en) | 2022-10-31 | 2022-10-31 | Split-charging type high-speed permanent magnet direct current generator |
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| Country | Link |
|---|---|
| CN (1) | CN115580058A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060279159A1 (en) * | 2005-05-27 | 2006-12-14 | Minebea-Matsushita Motor Corporation | Small DC motor |
| US8227948B1 (en) * | 2009-01-09 | 2012-07-24 | Hydro-Gear Limited Partnership | Electric motor |
| CN107800213A (en) * | 2017-10-17 | 2018-03-13 | 天津飞旋高速电机科技有限公司 | Combined high-speed permanent magnet machine rotor and its manufacture method |
| CN113059380A (en) * | 2021-03-29 | 2021-07-02 | 台州北平机床有限公司 | Automatic clamping mechanism |
| WO2022113936A1 (en) * | 2020-11-27 | 2022-06-02 | 株式会社デンソー | Dynamo-electric machine |
-
2022
- 2022-10-31 CN CN202211349856.0A patent/CN115580058A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060279159A1 (en) * | 2005-05-27 | 2006-12-14 | Minebea-Matsushita Motor Corporation | Small DC motor |
| US8227948B1 (en) * | 2009-01-09 | 2012-07-24 | Hydro-Gear Limited Partnership | Electric motor |
| CN107800213A (en) * | 2017-10-17 | 2018-03-13 | 天津飞旋高速电机科技有限公司 | Combined high-speed permanent magnet machine rotor and its manufacture method |
| WO2022113936A1 (en) * | 2020-11-27 | 2022-06-02 | 株式会社デンソー | Dynamo-electric machine |
| CN113059380A (en) * | 2021-03-29 | 2021-07-02 | 台州北平机床有限公司 | Automatic clamping mechanism |
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