WO2014086094A1 - 无刷电机 - Google Patents
无刷电机 Download PDFInfo
- Publication number
- WO2014086094A1 WO2014086094A1 PCT/CN2013/001376 CN2013001376W WO2014086094A1 WO 2014086094 A1 WO2014086094 A1 WO 2014086094A1 CN 2013001376 W CN2013001376 W CN 2013001376W WO 2014086094 A1 WO2014086094 A1 WO 2014086094A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- motor
- end cover
- brushless motor
- circuit board
- field effect
- Prior art date
Links
- 230000017525 heat dissipation Effects 0.000 claims abstract description 29
- 230000005669 field effect Effects 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
- H02K2211/03—Machines characterised by circuit boards, e.g. pcb
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
Definitions
- the present invention relates to a brushless motor, and more particularly to a brushless motor for use in garden tools and power tools. Background technique
- the motor In the design of traditional garden tools and power tools, the motor is split.
- the motor can be operated by the plastic shell and the back cover of the garden tool and the power tool. This requires high precision for the plastic case and the back cover. Otherwise, the motor will generate noise or work current when the motor is running. Fast, affecting the life of the motor.
- multiple FETs are provided with separate heat dissipation, which not only increases the cost, but also dissipates heat on the cooling air path of the motor. The heat dissipation effect is not very good, which affects the performance of the FET.
- the technical problem to be solved by the present invention is to provide a brushless motor, which can ensure a simple assembly process, reduce the precision requirements of the plastic casing of the garden tool and the power tool, and reduce the defect rate, and the field effect tube is directly mounted on the motor. On the outer casing, it can ensure good heat dissipation, and can save a heat sink block, which saves cost.
- the present invention provides a brushless motor including: a stator, a rotor, a plurality of field effect transistors, a commutation circuit board, a control circuit board, and a motor end cover, the stator and the rotor being disposed inside the motor end cover, the plurality of The FET is connected to the motor end cover, and the reversing circuit board and the control circuit board are connected to the motor end cover.
- the motor end cover includes a front end cover and a rear end cover, and the motor front end cover and the motor rear end cover are fixed to each other. Even Connected to form an integrated brushless motor.
- the plurality of field effect transistors are directly fixed on the front end cover of the motor, and the FET is also connected to the control circuit board.
- the commutation circuit board and the control circuit board are both connected to the front end cover of the motor.
- the field effect tube is fixedly locked to the front end cover of the motor by screws.
- the front end cover of the motor and the rear end cover of the motor are fixedly connected by bolts.
- a center of the brushless motor is provided with a motor core shaft, and the brushless motor is connected to the gear box assembly through a motor core shaft.
- a motor air raft is connected to a side of the motor mandrel adjacent to the rear end cover of the motor.
- the brushless motor internally forms a heat dissipation air path, and the field effect tube is disposed on the heat dissipation air path.
- the heat dissipation air path includes an air inlet and an air outlet, and the field effect tube is disposed at one side of the air inlet.
- the air inlet comprises an upper air inlet, a lower air inlet and a left and right air inlet disposed at a front end cover of the motor, and the air outlet comprises left and right air outlets disposed at two sides of the rear end cover of the motor.
- the invention has the beneficial effects that: the brushless motor of the invention ensures good heat dissipation, saves heat dissipation block, saves cost, and the integrated brushless motor runs smoothly, and the requirement for the casing is not like the split type brushless. Like the motor, it has a high precision, which reduces the defect rate of the product in mass production.
- FIG. 1 is a schematic structural view of a brushless motor of the present invention
- FIG. 2 is a schematic structural view of a brushless motor of the present invention for use in an electric drill
- the components of the drawings are marked as follows: 1.
- Brushless motor 2.
- an embodiment of the present invention includes:
- a brushless motor comprising: a brushless motor 1 , the brushless motor 1 comprising: a stator 20, a rotor 21, a plurality of field effect transistors 4, a commutation circuit board 5, a control circuit board 6 and a motor end cover.
- the stator 20 and the rotor 21 are disposed inside the motor end cover, the plurality of field effect transistors 4 are connected to the motor end cover, and the FET 4 is further connected to the control circuit board 6; the commutation circuit board 5 and The control circuit board 6 is connected to the motor end cover.
- the motor end cover includes a motor front end cover 2 and a motor rear end cover 3, and the motor front end cover 2 and the motor rear end cover 3 are fixedly connected to each other.
- the motor front end cover 2 and the motor rear end cover 3 are fixedly connected by bolts 7.
- the plurality of field effect transistors 4 are directly fixed on the motor front end cover 2, and the commutation circuit board 5 and the control circuit board 6 are both It is connected to the motor front end cover 2.
- the brushless motor 1 is integrally provided, which ensures that the brushless motor is more easily assembled in the garden tool and the power tool, and the precision requirements of the plastic shell of the garden tool and the power tool are reduced.
- the defect rate is reduced, and the brushless motor can know whether the motor is defective or not, such as noise, when it is not loaded into the whole machine, thereby improving work efficiency.
- a plurality of FETs are directly locked to the motor front end cover 2 by screws 8, that is, a high-power FET 4 on the control circuit of the brushless motor can be directly mounted on the motor casing, thus It not only ensures good heat dissipation, but also saves a heat sink block, saving cost.
- the center of the brushless motor 1 is provided with a motor spindle 9, which is connected to the gearbox assembly 10 via a motor spindle 9, and the brushless motor 1 drives the normal operation of the power tool through the gearbox assembly 10.
- a motor fan 11 is connected to a side of the motor spindle 9 adjacent to the motor rear end cover 3 to ensure good heat dissipation of the brushless motor. Further, a heat dissipation air path is formed inside the brushless motor 1 .
- the high-power FET 6 is disposed on the heat dissipation air path to ensure direct heat dissipation of the FET.
- the heat dissipation air path includes an air inlet and an air outlet.
- the upper air inlet 12 and the lower air inlet 13 are disposed on the upper and lower sides of the motor front end cover 2, and the left and right air inlets 14 are disposed on the left and right sides of the motor front end cover, and left and right sides are disposed on both sides of the motor rear end cover 3.
- the tuyere 15 forms a heat dissipation path between them.
- the entire cooling air path not only ensures the direct heat dissipation of the FET 4, but also ensures the efficient heat dissipation of the brushless motor, prolongs the service life of the brushless motor, and improves the use efficiency of the brushless motor. As shown in FIG.
- FIG. 2 it is a schematic structural view of a brushless motor of the present invention for an electric drill, wherein the brushless motor 1 is coupled to the gearbox assembly 10, and the brushless motor 1 drives the operation of the electric saw through the gearbox assembly 10.
- the brushless motor 1 six FETs 4 are disposed on the housing of the motor.
- the brushless motor 1 is an integrated setting, which ensures that the assembly process of the electric drill is simpler.
- the P strip has lower requirements on the precision of the plastic shell of the electric drill and reduces the defective rate.
- the first air inlet 16 is disposed on both sides of the front end of the fuselage of the electric drill, and the second air inlet 17 is further disposed on the upper and lower sides of the front end of the fuselage, and the first air outlet 18 is disposed on both sides of the rear end of the fuselage, in the fuselage
- An upper second air outlet 19 is disposed on the upper and lower sides of the rear end.
- a heat dissipation air path is formed between the first air inlet 16 , the second air inlet 17 , the first air outlet 18 and the second air outlet 19 , and the field effect tube 4 is disposed on the heat dissipation air path to ensure good field effect tube.
- the heat dissipation effect also ensures the good heat dissipation of the brushless motor and the electric drill, and prolongs the service life of the electric drill.
- the beneficial effects of the brushless motor of the present invention are:
- the brush motor runs more smoothly, and the requirements for the casing are not as high as the split brushless motor, so it has high precision, which reduces the defective rate of the product in mass production;
- the FET is directly mounted on the outer casing of the motor. It can not only ensure good heat dissipation, but also save a heat sink block, which saves cost; at the same time, the high-power FET is also set on the heat-dissipating air path, which ensures the direct heat dissipation of the FET, that is, the brushless motor is guaranteed. Efficient heat dissipation extends the life of brushless motors and improves the efficiency of brushless motors.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Cooling System (AREA)
- Motor Or Generator Frames (AREA)
- Brushless Motors (AREA)
- Dc Machiner (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015543240A JP6063579B2 (ja) | 2012-12-03 | 2013-11-13 | ブラシレスモータ |
KR1020157013524A KR20150115720A (ko) | 2012-12-03 | 2013-11-13 | 브러시리스 모터 |
CA2904771A CA2904771C (en) | 2012-12-03 | 2013-11-13 | Brush-less motor |
EP13860273.5A EP2928053A4 (en) | 2012-12-03 | 2013-11-13 | BRUSHLESS MOTOR |
US14/718,076 US9525326B2 (en) | 2012-12-03 | 2015-05-20 | Brush-less motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210506043.8 | 2012-12-03 | ||
CN2012105060438A CN102969861A (zh) | 2012-12-03 | 2012-12-03 | 无刷电机 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/718,076 Continuation US9525326B2 (en) | 2012-12-03 | 2015-05-20 | Brush-less motor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014086094A1 true WO2014086094A1 (zh) | 2014-06-12 |
Family
ID=47799803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/001376 WO2014086094A1 (zh) | 2012-12-03 | 2013-11-13 | 无刷电机 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9525326B2 (zh) |
EP (1) | EP2928053A4 (zh) |
JP (1) | JP6063579B2 (zh) |
KR (1) | KR20150115720A (zh) |
CN (1) | CN102969861A (zh) |
CA (1) | CA2904771C (zh) |
WO (1) | WO2014086094A1 (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102969861A (zh) * | 2012-12-03 | 2013-03-13 | 常州格力博有限公司 | 无刷电机 |
IN2015DN03112A (zh) * | 2013-01-14 | 2015-10-02 | Dayco Ip Holdings Llc | |
CN103219832A (zh) * | 2013-04-01 | 2013-07-24 | 常州格力博有限公司 | 无刷电圆锯 |
CN106625175A (zh) * | 2016-10-27 | 2017-05-10 | 浙江锋利工具制造有限公司 | 嵌入式无刷电机直驱切割机 |
CN109149872A (zh) * | 2017-06-27 | 2019-01-04 | 龙海特尔福汽车电子研究所有限公司 | 基于eps***的无刷电机控制器 |
EP3743985A1 (en) | 2018-01-23 | 2020-12-02 | Joel Wacknov | Electric machine with integrated controller |
CN114876827A (zh) | 2021-02-05 | 2022-08-09 | 创科无线普通合伙 | 吹风机 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN2402054Y (zh) * | 1999-12-14 | 2000-10-18 | 广东美的集团股份有限公司 | 低压无刷直流电动机 |
CN2938545Y (zh) * | 2006-07-28 | 2007-08-22 | 许晓华 | 电机后端盖场效应管布置结构 |
CN101636250A (zh) * | 2007-06-18 | 2010-01-27 | 日立工机株式会社 | 动力工具 |
CN102969861A (zh) * | 2012-12-03 | 2013-03-13 | 常州格力博有限公司 | 无刷电机 |
CN203014627U (zh) * | 2012-12-03 | 2013-06-19 | 常州格力博有限公司 | 无刷电机 |
Family Cites Families (22)
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US4156168A (en) * | 1976-11-03 | 1979-05-22 | Tokheim Corporation | Electric motor |
US5061869A (en) * | 1987-04-01 | 1991-10-29 | United Technologies Electro Systems, Inc. | Motor housing structure |
JPH06121507A (ja) * | 1992-10-07 | 1994-04-28 | Matsushita Electric Ind Co Ltd | ブラシレスモータ |
US5654599A (en) * | 1994-12-29 | 1997-08-05 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Dynamically timed electric motor |
US6949849B1 (en) * | 1998-06-30 | 2005-09-27 | General Electric Company | Motor endshield assembly for an electronically commutated motor |
DE19956380C1 (de) * | 1999-11-24 | 2001-01-04 | Bosch Gmbh Robert | Flüssigkeitspumpe mit einem Motorgehäuse und Verfahren zur Herstellung eines Motorgehäuses |
JP3711877B2 (ja) * | 2001-03-02 | 2005-11-02 | 日立工機株式会社 | 電動工具 |
CN2529438Y (zh) * | 2001-09-23 | 2003-01-01 | 瑞安市正中电机有限公司 | 无刷直流电机 |
DE10302791B4 (de) * | 2002-01-30 | 2016-03-17 | Denso Corporation | Elektrokompressor |
US7253585B2 (en) * | 2002-11-22 | 2007-08-07 | Milwaukee Electric Tool Corporation | Battery pack |
US6933640B2 (en) * | 2003-10-16 | 2005-08-23 | A.O. Smith Corporation | Electric machine and method of assembling the same |
US7548007B2 (en) * | 2004-06-14 | 2009-06-16 | Comair Rotron Inc. | Rotor shaft coupling |
CN101373907A (zh) * | 2008-07-01 | 2009-02-25 | 姜卫亮 | 一种无刷电机 |
JP5522504B2 (ja) * | 2008-09-29 | 2014-06-18 | 日立工機株式会社 | 電動工具 |
EP2330960B1 (en) * | 2008-10-06 | 2018-03-28 | Shop Vac Corporation | Vacuum assembly with inlet through removable tank |
EP2391480B2 (en) * | 2009-01-30 | 2018-08-15 | Koki Holdings Kabushiki Kaisha | Power tool |
JP5472683B2 (ja) * | 2009-05-11 | 2014-04-16 | 日立工機株式会社 | 電動工具 |
JP5446937B2 (ja) * | 2009-06-24 | 2014-03-19 | 株式会社デンソー | 電子回路内蔵型モータ |
JP5435286B2 (ja) * | 2009-06-24 | 2014-03-05 | 株式会社デンソー | 駆動装置 |
JP5170222B2 (ja) * | 2009-12-07 | 2013-03-27 | マックス株式会社 | 充電工具 |
DE102011100980A1 (de) * | 2010-05-13 | 2012-05-16 | Johnson Electric S.A. | Elektromotor |
JP5012953B2 (ja) * | 2010-05-21 | 2012-08-29 | 株式会社デンソー | 駆動装置 |
-
2012
- 2012-12-03 CN CN2012105060438A patent/CN102969861A/zh active Pending
-
2013
- 2013-11-13 EP EP13860273.5A patent/EP2928053A4/en not_active Withdrawn
- 2013-11-13 JP JP2015543240A patent/JP6063579B2/ja active Active
- 2013-11-13 KR KR1020157013524A patent/KR20150115720A/ko not_active Application Discontinuation
- 2013-11-13 WO PCT/CN2013/001376 patent/WO2014086094A1/zh active Application Filing
- 2013-11-13 CA CA2904771A patent/CA2904771C/en active Active
-
2015
- 2015-05-20 US US14/718,076 patent/US9525326B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2402054Y (zh) * | 1999-12-14 | 2000-10-18 | 广东美的集团股份有限公司 | 低压无刷直流电动机 |
CN2938545Y (zh) * | 2006-07-28 | 2007-08-22 | 许晓华 | 电机后端盖场效应管布置结构 |
CN101636250A (zh) * | 2007-06-18 | 2010-01-27 | 日立工机株式会社 | 动力工具 |
CN102969861A (zh) * | 2012-12-03 | 2013-03-13 | 常州格力博有限公司 | 无刷电机 |
CN203014627U (zh) * | 2012-12-03 | 2013-06-19 | 常州格力博有限公司 | 无刷电机 |
Also Published As
Publication number | Publication date |
---|---|
EP2928053A1 (en) | 2015-10-07 |
US9525326B2 (en) | 2016-12-20 |
CA2904771A1 (en) | 2014-06-12 |
CA2904771C (en) | 2018-12-04 |
EP2928053A4 (en) | 2016-08-03 |
KR20150115720A (ko) | 2015-10-14 |
CN102969861A (zh) | 2013-03-13 |
JP2016502388A (ja) | 2016-01-21 |
JP6063579B2 (ja) | 2017-01-18 |
US20150256053A1 (en) | 2015-09-10 |
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