CN202218143U - DC brushless motor - Google Patents
DC brushless motor Download PDFInfo
- Publication number
- CN202218143U CN202218143U CN2011203183773U CN201120318377U CN202218143U CN 202218143 U CN202218143 U CN 202218143U CN 2011203183773 U CN2011203183773 U CN 2011203183773U CN 201120318377 U CN201120318377 U CN 201120318377U CN 202218143 U CN202218143 U CN 202218143U
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- end cap
- hall
- stator core
- brushless motor
- position sensor
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Abstract
The utility model provides a DC (Direct Current) brushless motor comprising a stator core, a rotor core, end covers and a Hall position sensor; wherein the end covers comprise a first end cover and a second end cover, the first end cover and the second end cover clamp the stator core in a axial direction; a axial length of the rotor core is greater than a axial length of the stator core; the Hall position sensor is fixed on one side of the first end cover and corresponding to a portion of the rotor core exceeding the stator core; a gas is provided between the hall position sensor and the stator core; and a gap is also provided between the hall position sensor and the rotor core. According to the DC brushless motor of the utility model, the Hall position sensor is independently arranged on the first end cover, thus the Hall position sensor can be separated from the stator core and can not contact with the stator core, thereby solving the problem that the Hall position sensor is affected by temperature rise of the stator core.
Description
Technical field
The utility model relates to a kind of dc brushless motor.
Background technology
In today that technology is maked rapid progress, automobile is universal as mobile phone, becomes requisite walking-replacing tool in people's go off daily.The development of automobile industry especially with exponential form in rising all the way.The energy crisis that grows in intensity in the whole world is actuated down; The oil price problem is more and more white-hot especially; The energy consumption problem of fuel-engined vehicle has become the deciding factor that left and right sides car owner purchases car, and electric automobile has welcome the spring of oneself with magnificent the coming on stage of advantage of energy-saving and emission-reduction at this moment.
Because electric motor car has that saving power and preventing pollution dyes and characteristics conveniently, has therefore become a kind of important green traffic instrument in people's life gradually.Electric motor car mainly comprises five major parts such as car body, motor, battery, charger and control system, and motor is as the power section of electric motor car, and its performance has directly determined the car load runnability of electric motor car.
Permanent-magnet brushless DC electric machine had both had the series of advantages such as simple in structure, reliable and easy to maintenance of alternating current machine; Characteristics such as possess again that the direct current machine operational efficiency is high, no excitation loss and good speed adjustment features, detent torque are bigger are widely used in electric automobiles.The general permanent-magnet brushless DC electric machine that hall position sensor is arranged has that hall position sensor is difficult to install, is easy to damage, maintenance difficult, is subject to stator core temperature rise influence, shortcoming such as big takes up room.And because battery is a bottleneck of restriction electric automobile development, this just requires motor product to have higher power density and littler volume, lighter weight.Part motor has adopted the method with the integrated curing of controller, though effectively saved the space, when breaking down, can't keep in repair, and must a whole set ofly change, and has produced too high maintenance cost.
Summary of the invention
The purpose of the utility model is to overcome the deficiency that hall position sensor is subject to stator core temperature rise influence, provides a kind of hall position sensor not to be subject to the dc brushless motor of stator core temperature rise influence.
A kind of dc brushless motor; Comprise stator core, rotor core, end cap and hall position sensor; Said end cap comprises first end cap and second end cap; First end cap and second end cap clamp said stator core on axial direction; The axial length of said rotor core is greater than the axial length of said stator core, and said hall position sensor is fixed on the side of said first end cap and said hall position sensor respective rotor iron core exceeds the part of said stator core, all has the gap between said Hall element and said stator core and the said rotor core.
Preferably; Said dc brushless motor also comprises Hall support and hall position sensor driver module; Said Hall support is provided with the mounting groove that is used to install hall position sensor; Said hall position sensor driver module is fixedly mounted on the end of Hall support away from stator core, and said Hall support is fixed on the end of first end cap away from stator core.
Preferably; Said Hall support is provided with first installing hole and second installing hole; Said hall position sensor driver module is installed on the said Hall support through first installing hole, and said Hall support is fixed on said first end cap through said second installing hole.
Preferably, said first end cap is provided with scallop hole, and said Hall support is provided with the fan-shaped boss that matches with scallop hole, and said mounting groove is arranged on the said fan-shaped boss, and said fan-shaped boss passes said scallop hole.
Preferably, said rotor core also comprises magnetic shoe, and said magnetic shoe is arranged on the said rotor core outside along circumferential direction.
Preferably, said motor also comprises radiator, and said radiator is fixed on the end face of said first end cap away from stator core; Said Hall support is between first end cap and said radiator; Said Hall support and said radiator separate, and said radiator is provided with the groove that can hold said controller, and said controller is fixedly mounted in the said groove; Also be provided with the through hole that is used to go between on said first end cap, the motor windings lead is electrically connected with said controller through said through hole.
Preferably, the outer wall of said radiator is provided with the bar shaped fin along circumferential direction.
Preferably, said mounting groove is three, and said three mounting grooves are positioned on the same circular arc.
Preferably, first end cap and second end cap lay respectively on two end faces of stator core, and first end cap and second end cap clamp said stator core on axial direction.
Preferably, the outer surface of said stator core is provided with and is used for antirust coating.
The utility model provides a kind of dc brushless motor; Comprise stator core, rotor core, end cap and hall position sensor; Said end cap comprises first end cap and second end cap; First end cap and second end cap clamp said stator core on axial direction, the axial length of said rotor core is greater than the axial length of said stator core, and said hall position sensor is fixed on the side of said first end cap and said hall position sensor respective rotor iron core exceeds the part of said stator core; All there is the gap between said Hall element and said stator core and the said rotor core; Hall position sensor independently is installed on first end cap, does not contact with stator core, has solved hall position sensor and has been subject to the problem that the stator core temperature rise influences.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model dc brushless motor.
Fig. 2 is the structural representation of Hall support of a kind of embodiment of the utility model dc brushless motor.
Fig. 3 is the structural representation at another visual angle of Hall support of a kind of embodiment of the utility model dc brushless motor.
Fig. 4 is the structural representation of first end cap of a kind of embodiment of the utility model dc brushless motor.
Fig. 5 is the structural representation of radiator of a kind of embodiment of the utility model dc brushless motor.
Wherein.
Hall support 7
Fan-shaped boss 8
Bearing 10
Lead-in wire 11
Fan-shaped boss 15
Scallop hole 16
Through hole 17
First installing hole 21
Second installing hole 22.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with accompanying drawing and embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
A kind of dc brushless motor technical scheme that the utility model provides can be divided into two parts: motor part and controller part; Specifically comprise stator core 3, rotor core 5, end cap, hall position sensor 19 and controller (not shown), said end cap comprises first end cap 1 and second end cap 2, and stator core 3 is formed by the silicon steel sheet closed assembly of stamping-out moulding; Stator core 3 is wound with coil; Constitute stator winding, for better heat radiation of motor itself, the dc brushless motor in this programme does not have electric machine casing; Through first end cap 1 and second end cap 2 clamping stator core 3 in axial direction; In order to prevent stator core 3 owing to corrosion takes place in the protection that does not have electric machine casing, be provided with at stator core 3 outer surfaces and be used for antirust coating, described coating can adopt in the prior art spray paint, particularly exposed part forms antirust coating to means such as plating on stator core 3 surfaces; In the present embodiment, adopt the processing of spraying paint to form antirust coating to the stator core surface.
In conjunction with shown in Figure 1, also be provided with rotating shaft 6 on the rotor core 5, on first end cap 1 and second end cap 2, be equipped with bearing 10 and be used for supporting revolving shaft 6; In addition; On rotor core 5, also be provided with magnetic shoe 4, in this programme, adopt magnetic shoe 4 to be bonded in rotor core 5 surfaces; The axial length of rotor core 5 is longer than stator core 3; So when rotor core 5 was concordant with stator core 3 one end end faces, rotor core 5 other ends will exceed stator core 3 parts, and this programme will solve the problem that hall position sensor receives stator winding temperature; Also be to utilize this rotor core 5 to exceed the part of stator core 3, how the position that following mask body is introduced hall position sensor 19 is provided with.
In conjunction with Fig. 2 and shown in Figure 3,, not influenced by the temperature rise of stator core 3 in order to make hall position sensor 19 and stator core 3 contactless; Adopted Hall support 7 in this programme, the material of Hall support 7 is the exotic material of available technology adopting, for example nylon etc.; In the present embodiment, Hall support 7 is a fan-shaped nylon sheet, and fan-shaped nylon sheet is provided with and is used for the cylinder that is connected with first end cap 1; Also be provided with fan-shaped boss 15 on the end face of fan-shaped nylon sheet, be provided with the mounting groove 14 that is used to install hall position sensor 19 along the axial direction of fan-shaped boss 15, hall position sensor 19 is installed in the described mounting groove 14; The pin of hall position sensor 19 is welded on the circuit board that is used to drive hall position sensor 19; Circuit board is electrically connected with controller through sensor lead 12 again, also is provided with first installing hole 21 on the Hall support, and the hall position sensor driver module is fixed on the end face away from stator core of fan-shaped nylon sheet through first installing hole 21; In the present embodiment; Adopt three hall position sensors 19, said mounting groove 14 is three, and said three mounting grooves 14 are positioned on the same circular arc.
In conjunction with shown in Figure 4, in the present technique scheme, first end cap 1 of motor is provided with the scallop hole 16 that can cooperate with said fan-shaped boss 15; Also be provided with second installing hole 22 on the Hall support 7; Said fan-shaped boss 15 passes scallop hole 16, and Hall support 7 adopts through second installing hole 22 and is bolted on first end cap 1, and hall position sensor 19 is near stator core 3 but do not contact; Hall position sensor 19 can not receive the influence of stator core 3 temperature rises; Hall position sensor 19 just in time is positioned at the part that rotor core 5 exceeds stator core 3, and is relative with magnetic shoe 4 on the rotor core 5, and said hall position sensor 19 does not contact rotor core 5 equally;, rotor can not rub when rotating like this with hall position sensor 19; For the ease of installing, also be provided with location notch 20 on said first end cap 1, said location notch 20 is used for confirming hall position sensor 19 positions.
Also be provided with the through hole 17 that the lead-in wire that is used for motor windings passes on said first end cap 1, motor windings comprises the winding coil on the stator core 3, and the lead-in wire 11 of motor windings passes said through hole 17 and is connected on the said controller (not shown).
In conjunction with shown in Figure 5, dc brushless motor also comprises the controller (not shown) that is used to control the motor operation, and the lead-in wire 11 on the motor windings all need be electrically connected with said controller (not shown) with hall position sensor 19; Dispel the heat for the ease of the controller (not shown); Said dc brushless motor also comprises radiator 9, and said radiator 9 is fixed on the end face of said first end cap 1 away from stator core 5, and said Hall support 7 is between first end cap 1 and said radiator 9; Said Hall support 7 separates with said radiator 9; The shape of said radiator 9 can for discoideus or an end be provided with opening cavity body etc. other can be installed in the shape on first end cap 1 of motor, in the present embodiment, radiator 9 adopts the cavity body of an end opening; On the inner bottom surface of cavity body, be provided with the groove 13 that can hold the controller (not shown); Said controller (not shown) is through being bolted in the groove 13, and circumferential direction is provided with bar shaped fin 18 in the outer wall upper edge of radiator 9, and said radiator 9 is through being bolted on first end cap 1; Motor and controller (not shown) integrate; Motor and controller (not shown) are integrated, because said radiator 18 is a metal material, the lead-in wire 11 of motor windings and the electromagnetic field in the motor are had shield effectiveness; And needn't need use shielded type cable to reduce electromagnetic disturbance as absolute construction, saved space resources simultaneously.
The utility model provides a kind of dc brushless motor, comprises stator core 3, rotor core 5, end cap, hall position sensor 19 and controller (not shown), and said end cap comprises first end cap 1 and second end cap 2; Said rotor core 5 is provided with magnetic shoe 4, and said controller (not shown) is connected with electric electromechanics, said controller (not shown) may command motor operation; The axial length of said rotor core 5 is greater than the axial length of said stator core 3, and said hall position sensor 19 is fixed on the side of said first end cap 1 and said hall position sensor 19 respective rotor iron cores 5 exceed the part of said stator core 3, has the gap between said Hall element and the said rotor core 5; Said hall position sensor 19 is electrically connected with said controller (not shown), and said controller (not shown) is fixed on the opposite side of said first end cap 1, through adopting Hall support 7; Hall position sensor 19 independently is installed on first end cap 1; Do not receive the influence of stator core 3 temperature rises, need not increase extra magnet ring, and dc brushless motor is mutually integrated with the controller (not shown); It is little to take up room; Can effectively reduce motor volume, solve that hall position sensor 19 installation accuracies are poor, the problem of complicated operation, electrical machmary maintenance difficulty, hall position sensor 19 is installed, the location is simple; Be convenient to maintain and replace; Through two end cap clamping support stator iron cores 3, do not have the iron core shell of conventional motor simultaneously, heat can directly come out from iron core; Has higher power and efficient under the equal volume, effectively saves energy.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.
Claims (10)
1. dc brushless motor; Comprise stator core, rotor core, end cap and hall position sensor; Said end cap comprises first end cap and second end cap; First end cap and second end cap clamp said stator core on axial direction, it is characterized in that, the axial length of said rotor core is greater than the axial length of said stator core; Said hall position sensor is fixed on the side of said first end cap and said hall position sensor respective rotor iron core exceeds the part of said stator core, all has the gap between said Hall element and said stator core and the said rotor core.
2. dc brushless motor according to claim 1; It is characterized in that; Said dc brushless motor also comprises the controller that is used to control the dc brushless motor operation; Said controller is electrically connected with said dc brushless motor, and said hall position sensor is electrically connected with said controller, and said controller is fixed on the opposite side of said first end cap.
3. dc brushless motor according to claim 2; It is characterized in that; Said dc brushless motor also comprises Hall support and hall position sensor driver module, and said Hall support is fixed on the end of first end cap away from stator core, and said Hall support is provided with the mounting groove that is used to install hall position sensor; Hall is positioned at mounting groove, and said hall position sensor driver module is fixedly mounted on the end of Hall support away from stator core.
4. dc brushless motor according to claim 3; It is characterized in that; Said Hall support is provided with first installing hole and second installing hole; Said hall position sensor driver module is installed on the said Hall support through first installing hole, and said Hall support is fixed on said first end cap through said second installing hole.
5. dc brushless motor according to claim 4; It is characterized in that said first end cap is provided with scallop hole, said Hall support is provided with the fan-shaped boss that matches with scallop hole; Said mounting groove is arranged on the said fan-shaped boss, and said fan-shaped boss passes said scallop hole.
6. dc brushless motor according to claim 5 is characterized in that said rotor core also comprises magnetic shoe, and said magnetic shoe is arranged on the said rotor core outside along circumferential direction.
7. dc brushless motor according to claim 6; It is characterized in that said motor also comprises radiator, said radiator is fixed on the end face of said first end cap away from stator core; Said Hall support is between first end cap and said radiator; Said Hall support and said radiator separate, and said radiator is provided with the groove that can hold said controller, and said controller is fixedly mounted in the said groove; Also be provided with the through hole that is used to go between on said first end cap, the motor windings lead is electrically connected with said controller through said through hole.
8. dc brushless motor according to claim 7 is characterized in that the outer wall of said radiator is provided with the bar shaped fin along circumferential direction.
9. dc brushless motor according to claim 8 is characterized in that, said mounting groove is three, and said three mounting grooves are positioned on the same circular arc.
10. dc brushless motor according to claim 9 is characterized in that, the outer surface of said stator core is provided with and is used for antirust coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203183773U CN202218143U (en) | 2011-08-29 | 2011-08-29 | DC brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203183773U CN202218143U (en) | 2011-08-29 | 2011-08-29 | DC brushless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202218143U true CN202218143U (en) | 2012-05-09 |
Family
ID=46017369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203183773U Expired - Lifetime CN202218143U (en) | 2011-08-29 | 2011-08-29 | DC brushless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202218143U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009606A (en) * | 2014-03-18 | 2014-08-27 | 昆山航天林泉电机有限公司 | Integrated brushless direct current motor device for scooter |
| CN104836409A (en) * | 2015-05-27 | 2015-08-12 | 深圳市雅腾电机有限公司 | Brushless DC motor for soybean milk machine |
| CN105471216A (en) * | 2015-12-31 | 2016-04-06 | 天津飞旋科技研发有限公司 | Hall permanent magnet brushless high-speed direct current motor for vacuum molecular pump |
| CN107017752A (en) * | 2016-01-27 | 2017-08-04 | 台州优松机电科技有限公司 | A kind of method of permanent magnetic brushless magnetic induction part positioning |
| CN107040085A (en) * | 2017-05-04 | 2017-08-11 | 北京精密机电控制设备研究所 | A kind of dual sensor reducing motor structure |
| WO2017173878A1 (en) * | 2016-04-05 | 2017-10-12 | 深圳市帅泰科技有限公司 | Brushless motor |
-
2011
- 2011-08-29 CN CN2011203183773U patent/CN202218143U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009606A (en) * | 2014-03-18 | 2014-08-27 | 昆山航天林泉电机有限公司 | Integrated brushless direct current motor device for scooter |
| CN104009606B (en) * | 2014-03-18 | 2017-12-29 | 苏州航天林泉电机有限公司 | Scooter integrated brushless DC motor device |
| CN104836409A (en) * | 2015-05-27 | 2015-08-12 | 深圳市雅腾电机有限公司 | Brushless DC motor for soybean milk machine |
| CN105471216A (en) * | 2015-12-31 | 2016-04-06 | 天津飞旋科技研发有限公司 | Hall permanent magnet brushless high-speed direct current motor for vacuum molecular pump |
| CN107017752A (en) * | 2016-01-27 | 2017-08-04 | 台州优松机电科技有限公司 | A kind of method of permanent magnetic brushless magnetic induction part positioning |
| WO2017173878A1 (en) * | 2016-04-05 | 2017-10-12 | 深圳市帅泰科技有限公司 | Brushless motor |
| CN107040085A (en) * | 2017-05-04 | 2017-08-11 | 北京精密机电控制设备研究所 | A kind of dual sensor reducing motor structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shaoguan BYD Industry Co., Ltd Assignor: Biyadi Co., Ltd. Contract record no.: 2013440020443 Denomination of utility model: Fan of DC brushless electric machine Granted publication date: 20120509 License type: Exclusive License Record date: 20131231 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shaoguan BYD Industry Co., Ltd Assignor: Biyadi Co., Ltd. Contract record no.: 2013440020443 Denomination of utility model: Fan of DC brushless electric machine Granted publication date: 20120509 License type: Exclusive License Record date: 20131231 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120509 |