CN201663530U - Direct-current brushless motor for photovoltaic water pump - Google Patents
Direct-current brushless motor for photovoltaic water pump Download PDFInfo
- Publication number
- CN201663530U CN201663530U CN2010201149805U CN201020114980U CN201663530U CN 201663530 U CN201663530 U CN 201663530U CN 2010201149805 U CN2010201149805 U CN 2010201149805U CN 201020114980 U CN201020114980 U CN 201020114980U CN 201663530 U CN201663530 U CN 201663530U
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- stator
- water pump
- photovoltaic water
- motor
- electric machine
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- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model relates to a direct-current brushless motor for a photovoltaic water pump. A stator with a winding and a rotor with a magnet are disposed in an outer casing, the stator comprises an annular stator iron core, stator pole teeth and stator grooves are peripherally arrayed on the inner side of the annular stator iron core at intervals, inner sides of the stator pole teeth are provided with pole shoes extending to the peripheral direction of the two adjacent stator grooves, and one end of each pole shoe close to the side surface of the rotor is provided with a notch extending axially. Air clearances between the stator and the rotor are uneven in distribution due to the notches, thereby generating different magnetic fields and torsions and starting the motor to be in rotation operation towards the direction of the notches. The motor can be started easily, thereby increasing reliability of operation of the motor.
Description
(1) technical field
The utility model relates to photovoltaic water pump, is specially a kind of DC brushless electric machine for photovoltaic water pump.
(2) background technology
Area, China great Northwest lack of water, short of electricity, but groundwater resources and sunshine aboundresources.Photovoltaic water pump utilizes solar energy to come groundwater abstraction as the energy, can be widely used in area, China great Northwest, is used for drinking and pouring of people, animal, pasture.Because area, China great Northwest density of population is low, sparsely populated, have inconvenient traffic, the operational mode that therefore requires photovoltaic water pump is full-automatic, non-maintaining or few the maintenance, thus the parts of photovoltaic water pump must good reliability, efficient is higher.
In order to satisfy above-mentioned requirements, the necessary electromotor of photovoltaic water pump generally adopts dc brushless motor.Existing DC brushless electric machine for photovoltaic water pump comprises band winding stator, magnet carrier rotor, shell, end cap and PWM pulse-width modulation control system.Hall control is not adopted in this electric motor starting, rotation, has improved functional reliability, makes machine operation reliable and stable, but there is the problem of controller control motor rotation difficulty in it.
In addition, the stator winding of this motor adopts the multiply enamelled wire around embedding, multi cord automation coiling complexity, difficulty, incompatibility automated production; Stator core is the cylindrical shape of an integral body, elder generation's coiling during the multi cord coiling, and rule circle on stator core again, complex process, efficient are low.
(3) summary of the invention
At the problems referred to above, the utility model provides a kind of DC brushless electric machine for photovoltaic water pump, and this electric motor starting is easy, reliable operation.
Its technical scheme is such: DC brushless electric machine for photovoltaic water pump, be provided with band winding stator and magnet carrier rotor in the enclosure, described stator comprises the ring-type stator core, the inner circumferential compartment of terrain of described ring-type stator core is arranged with stator poles tooth and stator slot, the inboard of described stator poles tooth has the pole shoe that circumferentially extends to two adjacent described stator slots, and it is characterized in that: the end that described pole shoe closes on the side of described rotor is provided with axially extended breach.
Its further technical scheme is:
Described stator core circumferentially is being divided into a plurality of parts; Described stator core circumferentially is being divided into two parts; The winding of described stator is formed by single enamelled wire coiling; Be filled with liquid in the described shell; Described band winding stator and described magnet carrier rotor are by the epoxy resin sealing.
In the utility model breach be arranged so that air gap skewness between stator and the rotor, thereby produce magnetic field, torsion difference, make the electric motor starting rotation to breach direction rotation work, electric motor starting is easy, has improved the reliability of machine operation; Stator core is divided into a plurality of parts, make around rule simpler, the copper factor height, motor performance is good, can adapt to production in enormous quantities; Adopt single enamelled wire to repeat around embedding, can reach the motor electromagnetic designing requirement, can adapt to the automation coiling again on manufacturing process, technology is simple; The liquid of annotating in the enclosure makes the inside of motor and deep-well form negative pressure or reduces pressure in the motor, and sealing effectiveness is more reliable, stable; Band winding stator and magnet carrier rotor have further improved the reliability that motor is worked by the epoxy resin sealing in deep-well.
(4) description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the stator core in the utility model;
Fig. 3 is the I place enlarged drawing among Fig. 2;
Fig. 4 is the coiling figure of the stator winding in the utility model.
(5) embodiment
As Fig. 1, Fig. 2 and shown in Figure 3, the utility model is a kind of DC brushless electric machine for photovoltaic water pump, in shell 1, be provided with band winding stator 2 and magnet carrier rotor 3, rotor 3 is sleeved on the motor shaft 5, the output of motor shaft 5 is processed with spline, directly link to each other with water pump, motor is connected with PWM pulse width control modulator by control line 6.Stator 2 comprises ring-type stator core 7, the inner circumferential compartment of terrain of ring-type stator core 7 is arranged with stator poles tooth 8 and stator slot 9, the inboard of stator poles tooth 8 has the pole shoe 10 that circumferentially extends to two adjacent stator slots 9, constitute stator slot opening 11 between the pole shoe 10 of adjacent two stator poles teeth 8, improvements of the present utility model are to be provided with axially extended breach 12 at the end that pole shoe 10 closes on the medial surface of rotor.Breach 12 be arranged so that air gap skewness between stator 2 and the rotor 3, thereby produce magnetic field, torsion difference, make the electric motor starting rotation to breach 12 direction rotation works, electric motor starting is easy, improve the reliability of machine operation, can simplify the PWM controller.
As shown in Figure 4, the winding of stator 2 is formed by single enamelled wire coiling in the utility model.Adopt single enamelled wire to repeat around embedding, can reach the motor electromagnetic designing requirement, can adapt to the automation coiling again on manufacturing process, technology is simple.
As shown in Figure 1, the motor of photovoltaic water pump is worked in deep-well, needs good sealing, and the utility model is filled with liquid 4 in shell 1, makes the inside of motor and deep-well form negative pressure or reduce the interior pressure of motor, and sealing effectiveness is more reliable, stable.
The utility model has further improved the reliability that motor is worked to being with winding stator 2 and magnet carrier rotor 3 by the epoxy resin sealing in deep-well, simplified the structure of motor greatly, has reduced the manufacturing cost of motor.
Claims (6)
1. DC brushless electric machine for photovoltaic water pump, be provided with band winding stator and magnet carrier rotor in the enclosure, described stator comprises the ring-type stator core, the inner circumferential compartment of terrain of described ring-type stator core is arranged with stator poles tooth and stator slot, the inboard of described stator poles tooth has the pole shoe that circumferentially extends to two adjacent described stator slots, and it is characterized in that: the end that described pole shoe closes on the side of described rotor is provided with axially extended breach.
2. DC brushless electric machine for photovoltaic water pump according to claim 1 is characterized in that: described stator core circumferentially is being divided into a plurality of parts.
3. DC brushless electric machine for photovoltaic water pump according to claim 2 is characterized in that: described stator core circumferentially is being divided into two parts.
4. DC brushless electric machine for photovoltaic water pump according to claim 2 is characterized in that: the winding of described stator is formed by single enamelled wire coiling.
5. DC brushless electric machine for photovoltaic water pump according to claim 1 and 2 is characterized in that: be filled with liquid in the described shell.
6. DC brushless electric machine for photovoltaic water pump according to claim 1 and 2 is characterized in that: described band winding stator and described magnet carrier rotor are by the epoxy resin sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201149805U CN201663530U (en) | 2010-02-10 | 2010-02-10 | Direct-current brushless motor for photovoltaic water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201149805U CN201663530U (en) | 2010-02-10 | 2010-02-10 | Direct-current brushless motor for photovoltaic water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201663530U true CN201663530U (en) | 2010-12-01 |
Family
ID=43233949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201149805U Expired - Fee Related CN201663530U (en) | 2010-02-10 | 2010-02-10 | Direct-current brushless motor for photovoltaic water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201663530U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771320A (en) * | 2010-02-10 | 2010-07-07 | 无锡东南车辆科技有限公司 | DC brushless electric machine for photovoltaic water pump |
| CN102882292A (en) * | 2012-09-27 | 2013-01-16 | 宁波狮球通风机电有限公司 | Stator punching sheet |
-
2010
- 2010-02-10 CN CN2010201149805U patent/CN201663530U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771320A (en) * | 2010-02-10 | 2010-07-07 | 无锡东南车辆科技有限公司 | DC brushless electric machine for photovoltaic water pump |
| CN102882292A (en) * | 2012-09-27 | 2013-01-16 | 宁波狮球通风机电有限公司 | Stator punching sheet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20120210 |