US20060022543A1 - Stator of brushless motor brushless motor having same, and coil structure - Google Patents

Stator of brushless motor brushless motor having same, and coil structure Download PDF

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Publication number
US20060022543A1
US20060022543A1 US10/531,926 US53192605A US2006022543A1 US 20060022543 A1 US20060022543 A1 US 20060022543A1 US 53192605 A US53192605 A US 53192605A US 2006022543 A1 US2006022543 A1 US 2006022543A1
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United States
Prior art keywords
conductive
stator
layers
coils
coil
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Abandoned
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US10/531,926
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English (en)
Inventor
Kesatoshi Takeuchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
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Seiko Epson Corp
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Filing date
Publication date
Application filed by Seiko Epson Corp filed Critical Seiko Epson Corp
Assigned to SEIKO EPSON CORPORATION reassignment SEIKO EPSON CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TAKEUCHI, KESATOSHI
Publication of US20060022543A1 publication Critical patent/US20060022543A1/en
Priority to US11/424,339 priority Critical patent/US7282828B2/en
Abandoned legal-status Critical Current

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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
    • H02K3/26—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of printed conductors

Definitions

  • the present invention relates to a brushless motor stator and a brushless motor, and more particularly to a brushless motor using a stator having a structure in which a coil comprising a wound conductive pattern is formed on an insulating substrate and in which a plurality of said substrates are laminated.
  • the linear motor mobile coil as described in Japanese Patent Application Laid-open No. 2002-112524 is cited as an example of prior art related to the present invention.
  • the object of this mobile coil is to enhance the heat radiation effect of the linear motor mobile coil.
  • This mobile coil is comprised of 4 multilayered substrates, wherein a plurality of coils made of spiral conductor patterns are formed in alignment on each layer. The coils of each layer are electrically connected to each other by means of through holes via an insulating layer.
  • the heat radiation effect can be enhanced by increasing the heat radiation area of the conductor pattern through which the electrical current flows. Also, since the allowable current density of the conductor pattern can be increased by enhancing the heat radiation effect, the amount of copper used for the mobile coil in order to obtain the desired motor output can be reduced. This enables a lighter mobile coil and improved motor efficiency.
  • the above-mentioned precedent technology results in the following problems. Firstly, since the coil comprising 4 multilayer substrates, wherein a plurality of coils made of spiral conductive patterns are formed in alignment on each layer and wherein the coils of each layer are electrically connected to each other by means of through holes via an insulating layer is a mobile coil, the coil drive circuit cannot be formed on the multilayered substrate. This results in a complex structure. Secondly, although the heat radiation effect can be enhanced by increasing the heat radiation area of the conductor pattern, this heat radiation effect remains insufficient.
  • the object of the present invention is to provide: a brushless motor stator comprising a lamination body formed by alternate conductive layers and insulating layers; wherein a plurality of coils made of wound conductive patterns are formed on each conductive layer and wherein the coils of the conductive layers adjoined via the insulating layers are connected to each other via through holes formed in the same.
  • a drive circuit of the coil is provided in at least 1 of the conductive layers.
  • the above conductive layer is formed on an insulating substrate which acts as the above insulating layer.
  • Each winding of the coils of the adjoining conductive layers are connected to each other via the through holes.
  • the present invention is a brushless motor comprising the above stator and a rotor comprising a permanent magnet.
  • the use of a multilayered substrate as a stator wherein a coil is formed on each layer enables the coil drive circuit to be integrated onto the substrate.
  • a through hole as mentioned above is formed for each wind of the above conductive pattern of the above coil, which, via the above through hole, is electrically connected with each wind of the conductive pattern of the coil of the adjoining conductive layer.
  • FIG. 1 is an overall schematic diagram of a stator related to the present invention, where (A) is a plan view of the above and (B) is a side view of the same;
  • FIG. 2 is a diagram showing an example of a linkage of the conductive patterns of each conductive layer (coils);
  • FIG. 3 is a side view describing the linkage structure of the conductive patterns of each conductive layer (coils);
  • FIG. 4 is a diagram describing a brushless motor comprising the stator of FIG. 1 , where (A) is a plan view of the above and (B) is a side view of the same;
  • FIG. 5 is a type diagram showing a second example related to the formation of a coil pattern
  • FIG. 6 is the second embodiment of the brushless motor, where the set of coils is increased compared to the brushless motor of FIG. 1 , and where (A) is a plan view of the above and (B) is a side view of the same;
  • FIG. 7 is the third embodiment of the brushless motor, where a plurality of multilayered substrates on which coil patterns have been formed are laminated, and where (A) is a plan view of the above and (B) is a side view of the same;
  • FIG. 8 is the fourth embodiment of the brushless motor, where a plurality of multilayered substrates on which the coil patterns have been formed are arranged evenly in a circumferential direction of the stator comprising a permanent magnet, and where (A) is a plan view of the above and (B) is a side view of the same;
  • FIG. 9 shows a side view of an embodiment which applies the coil structure to a solenoid
  • FIG. 10 is a detailed diagram of another motor structure
  • FIG. 11 is a partially enlarged diagram of the above.
  • FIG. 12 is a plan view of the internal stator of said motor structure.
  • FIG. 13 is an end view in the direction of A-A′ of said stator.
  • FIG. 1 (A) is a plan view of the above and FIG. 1 (B) is a side view of the same.
  • the stator as a whole is comprised of an aggregate of circular substrates. Each substrate 1 is laminated in the direction defined by the rotational axis of the brushless motor as mentioned below.
  • the above substrate is, for example, composed of a print substrate, where a conductive pattern 1 B is formed on the insulating layer 1 A by means of a photo etching method.
  • the conductor on the substrate 1 is wound spirally as mentioned above to produce the above-mentioned coil pattern 12 .
  • These coil patterns 12 are connected to each other via the conductive layers of each substrate, where the coil patterns of certain layers are connected to the coil patterns of the adjoining conductive layers on either side in a layered direction of the substrate via the through holes 14 A-C (refer to FIG. 2 and FIG. 3 ) formed on the insulating layer 1 A.
  • FIG. 2 and FIG. 3 are conceptual diagrams showing coils of adjoining substrates which are connected to each other.
  • the coil pattern 12 A of the first substrate which is connected to the drive circuit 16 is connected to coil pattern 12 B of the second substrate via the first through hole 14 A formed on the first insulating layer of the first substrate.
  • the coil pattern 12 B is connected to coil pattern 12 C of the third substrate via the second through hole 14 B located on the insulating layer of the second substrate.
  • the drive circuit 16 can switch between 3 sets of coil patterns ( 12 - 1 to 12 - 3 in FIG. 1 ) which are formed over a plurality of substrates to supply an electrical current to the above coil patterns. In other words, the drive circuit 16 switches in sequence the sets of stator coils which provide the electrical current according to the magnetic pole position of the rotor comprising a permanent magnet.
  • This drive circuit 16 is formed on the same layer as the conductive layer of the print substrate as shown in FIG. 1 and FIG. 3 .
  • Symbol 30 of FIG. 1 corresponds to the magnetic sensor, which detects changes in the magnetic pole of the stator. This is then fed to the drive circuit.
  • the drive circuit switches between the sets of stator coils which provide the electrical current according to the above-mentioned detected data.
  • the magnetic sensor is not always necessary when switching the sets of stator coils which provide the electrical current by means of the drive circuit.
  • FIG. 4 is a type diagram of a brushless motor comprising the stator as shown in FIG. 1 , where (A) is a plan view of the above and (B) is a type diagram of the same as viewed from the side.
  • a rotational axis 32 is inserted through the above-mentioned through hole 10 .
  • the stator 40 and the rotational axis 32 rotate as a single unit due to either the integration of the rotational axis 32 and the stator 40 comprising a permanent magnet, or the press fitting of the rotational axis 32 onto the stator 40 .
  • the rotational axis 32 is rotatably supported by the bearings 34 which is fitted to the case 50 of the motor.
  • Symbol 20 is a stator with multilayered substrates in which a plurality of substrates is laminated as shown in FIG. 1 .
  • the rotor 40 comprising a permanent magnet is located in a position along the direction of the rotational axis in relation to the above stator (same).
  • the drive circuit section 16 can be formed on the same layer as the conductive pattern of the substrate.
  • FIG. 5 is a type diagram showing another example of an aspect which forms a coil pattern.
  • This aspect of FIG. 5 differs from those as previously described in that a through hole is provided for each wind of the coil pattern.
  • a contact point 12 AA is provided at the end of the first winding 12 A- 1 of coil pattern 12 A, which is connected to the starting end 12 BA of the first winding 12 B- 1 of coil pattern 12 B of the second substrate via the through hole 140 .
  • the contact point 12 BB at the end of the first winding 12 B- 1 of the coil pattern is connected to the starting end 12 AB of the second winding 12 A- 2 of the coil pattern of the first substrate via the through hole 140 A as a means of connectivity.
  • each winding of the coil patterns of the substrates can be serially linked and connected to the drive circuit.
  • the increase in the number of through holes enables the sufficient release of heat generated by the coils via the increased number of through holes.
  • the through holes are approximately 0.3 mm-1.5 mm in diameter, where the side walls of the holes are sheathed in conductive patterns.
  • the above-mentioned brushless motor may be further multipolarized by increasing the number of coil 12 sets from 3 to 6 poles.
  • FIG. 7 shows the third embodiment of the brushless motor.
  • This consists of a structure in which a plurality of sets of a multilayered substrate set (1 set) are laminated in the direction of rotational axis 32 .
  • FIG. 8 further relates to another embodiment, where multilayered substrates 20 are arranged next to each other around the circumference of the stator 40 .
  • a hole capable of accommodating a stator with a large diameter is formed at the center of the multilayered substrate.
  • Sets of stator coils made to have an even greater multipolarity are evenly arranged in a circumferential direction on each multilayered substrate. According to this structure, the brushless motor can be made thinner compared to that of the above-mentioned embodiments.
  • FIG. 9 shows a cross section related to an embodiment in which the coil structure described in the claims is applied to a solenoid.
  • the axis (plunger) 32 comprises a permanent magnet.
  • the plunger can be moved backwards and forwards along the direction of the arrow by the drive signal supplied to the stator (multilayered substrate) 20 .
  • the case 50 of the motor comprises bearings 34 which enable the plunger to move in the above-mentioned direction.
  • the plunger is supported by the case of the motor by means of the above bearings.
  • bearings are placed in two locations facing each other in the direction of the thickness of the case, and support the axis 32 at two points.
  • a known structure may be applied to the structure of the bearings.
  • the magnetic bearing structure as put forward in Patent Application 2002-258229 may also be applied.
  • the axis 32 is supported in a non-contact state based on a magnetic repulsion force which depends on a paired magnetic structure. This prevents any mechanical contact as in the bearing structure upon the generation of vibrations in the rotational axis.
  • FIG. 10 shows a motor which uses the above-mentioned coil structure.
  • This motor has the following structure.
  • a rotor 40 which is also formed in a ring shape, rotates integrally with the axis 32 which is rotatably supported by the case 114 .
  • the inner stator and the outer stator face each other across a gap, where the above-mentioned rotor 40 is rotatably positioned in the above-mentioned gap.
  • the above-mentioned coil patterns (coils) 16 are formed evenly at a given pitch on the above-mentioned inner stator and outer stator along a circumferential direction. Permanent magnets are also arranged evenly at a given pitch on the rotor along a circumferential direction.
  • a plurality of conductive films 1 C is laminated on the inner stator or the outer stator via the insulating films 1 A.
  • a coil is made by forming a series of conductive patterns on a plurality of conductive films. The patterns are continuous between the plurality of conductive films via the through holes.
  • the direction in which the coil patterns are formed differ from that of the above-mentioned embodiments.
  • the coil patterns of the above-mentioned embodiments are formed along the plane of the conductive films, whereas, as shown in FIG. 12 and FIG. 13 , the coil patterns of this embodiment are formed along the layered direction of a plurality of conductive films.
  • Coil pattern 12 is spirally formed along the layered direction of the conductive films (refer to FIG. 13 ).
  • This spiral-shaped coil pattern is formed over a plurality of layers along the radial direction of the stator (refer to FIG. 12 ).
  • each coil comprises 9 layers of spiral-shaped patterns.
  • the patterns on each layer are linked on a conductive film.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Brushless Motors (AREA)
US10/531,926 2002-11-18 2003-11-18 Stator of brushless motor brushless motor having same, and coil structure Abandoned US20060022543A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/424,339 US7282828B2 (en) 2002-11-18 2006-06-15 Brushless motor stator, brushless motor having same and coil structure

Applications Claiming Priority (3)

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JP2002334159 2002-11-18
JP2002-334159 2002-11-18
PCT/JP2003/014668 WO2004047252A1 (ja) 2002-11-18 2003-11-18 ブラシレスモータのステータ、及び、これを備えたブラシレスモータ、並びにコイル構造

Related Child Applications (1)

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US11/424,339 Division US7282828B2 (en) 2002-11-18 2006-06-15 Brushless motor stator, brushless motor having same and coil structure

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US20060022543A1 true US20060022543A1 (en) 2006-02-02

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US10/531,926 Abandoned US20060022543A1 (en) 2002-11-18 2003-11-18 Stator of brushless motor brushless motor having same, and coil structure
US11/424,339 Expired - Fee Related US7282828B2 (en) 2002-11-18 2006-06-15 Brushless motor stator, brushless motor having same and coil structure

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US (2) US20060022543A1 (de)
EP (1) EP1564864A4 (de)
JP (1) JP3897122B2 (de)
CN (1) CN100353646C (de)
WO (1) WO2004047252A1 (de)

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US20100188729A1 (en) * 2006-10-25 2010-07-29 Texas Instruments Incorporated Ceramic Header Method and System
US8319595B2 (en) 2010-01-13 2012-11-27 Cosmo Mechanics Co., Ltd. Coil apparatus
US10135310B2 (en) 2017-01-11 2018-11-20 Infinitum Electric Inc. System and apparatus for modular axial field rotary energy device
US10186922B2 (en) 2017-01-11 2019-01-22 Infinitum Electric Inc. System and apparatus for axial field rotary energy device
US20190115130A1 (en) * 2017-10-16 2019-04-18 Ibiden Co., Ltd. Laminated coil substrate
US10756589B2 (en) * 2017-09-07 2020-08-25 Ibiden Co., Ltd. Motor coil
US11177726B2 (en) 2017-01-11 2021-11-16 Infinitum Electric, Inc. System and apparatus for axial field rotary energy device
US11183896B2 (en) 2020-01-14 2021-11-23 Infinitum Electric, Inc. Axial field rotary energy device having PCB stator and variable frequency drive
US11201516B2 (en) 2018-03-26 2021-12-14 Infinitum Electric, Inc. System and apparatus for axial field rotary energy device
US11283319B2 (en) 2019-11-11 2022-03-22 Infinitum Electric, Inc. Axial field rotary energy device with PCB stator having interleaved PCBS
US11482908B1 (en) 2021-04-12 2022-10-25 Infinitum Electric, Inc. System, method and apparatus for direct liquid-cooled axial flux electric machine with PCB stator
US11588382B2 (en) 2017-07-24 2023-02-21 Murata Manufacturing Co., Ltd. Actuator and method of manufacturing actuator

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US7719147B2 (en) 2006-07-26 2010-05-18 Millennial Research Corporation Electric motor
JP2009033930A (ja) 2007-07-30 2009-02-12 Harada Hideo 発電機
BRPI0916951A2 (pt) * 2008-08-15 2019-09-24 Millennial Res Corporation motor eletrico
US10038349B2 (en) 2008-08-15 2018-07-31 Millennial Research Corporation Multi-phase modular coil element for electric motor and generator
JP2011030326A (ja) * 2009-07-23 2011-02-10 Jianzhun Electric Mach Ind Co Ltd モーターのステータおよびそのコイルユニット
TWI440281B (zh) * 2011-08-31 2014-06-01 Sunonwealth Electr Mach Ind Co 馬達定子
CN105684108A (zh) * 2013-09-04 2016-06-15 Ckd株式会社 电磁致动器用电枢线圈、电磁致动器、曝光装置及器件制造方法
CN104716766A (zh) * 2013-12-13 2015-06-17 博立码杰通讯(深圳)有限公司 电磁电机
WO2015111579A1 (ja) * 2014-01-21 2015-07-30 株式会社羽野製作所 発電装置および発電装置用電機子構造並びに電機子の製造方法
MX2016015424A (es) 2014-05-30 2017-01-05 Bolymedia Holdings Co Ltd Lente de ampliacion.
CN104868629A (zh) * 2015-06-08 2015-08-26 大连吉星电子有限公司 Vcm马达使用的fpc线圈
RU2018106687A (ru) 2015-07-24 2019-08-26 Нестек С.А. Прибор для вспенивания напитка или продукта питания
US10511201B2 (en) 2016-03-25 2019-12-17 Amotech Co., Ltd. Stacking-type stator using multilayer printed circuit board, and single-phase motor and cooling fan using same
KR101926472B1 (ko) * 2016-03-25 2018-12-07 주식회사 아모텍 다층 인쇄회로기판을 이용한 적층형 스테이터, 이를 이용한 단상 모터와 쿨링 팬
EP3255763A1 (de) * 2016-06-10 2017-12-13 Richemont International S.A. Mikrogenerator für uhren und herstellungsverfahren dafür
WO2018173666A1 (ja) * 2017-03-22 2018-09-27 株式会社村田製作所 多層基板
JP2019030113A (ja) * 2017-07-28 2019-02-21 公明 岩谷 ディスク型コイル及びそれを用いた回転電気機械
US10790077B2 (en) 2017-10-31 2020-09-29 Waymo Llc Devices and methods for an electromagnetic coil
US10931175B2 (en) 2018-10-31 2021-02-23 Waymo Llc Magnet ring with jittered poles
DE112019006616T5 (de) * 2019-07-05 2021-10-07 Renwei YU Flachstator mit mehrlagiger spule eines scheibenmotors
CN110784049A (zh) * 2019-10-31 2020-02-11 重庆铭凯科技发展有限公司 一种陶瓷pcb盘式无刷励磁电机
CN113497536B (zh) * 2020-04-01 2022-10-18 中芯集成电路（宁波）有限公司 致动器及其形成方法、驱动方法、电子设备和成像模组
US11777376B2 (en) 2021-01-07 2023-10-03 Kohler Co. Reluctance sensor for detection of position of a rotor in an electric machine

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US20100188729A1 (en) * 2006-10-25 2010-07-29 Texas Instruments Incorporated Ceramic Header Method and System
US8627566B2 (en) * 2006-10-25 2014-01-14 Texas Instruments Incorporated Method for packaging a microelectromechanical system (MEMS) device
US8319595B2 (en) 2010-01-13 2012-11-27 Cosmo Mechanics Co., Ltd. Coil apparatus
US10186922B2 (en) 2017-01-11 2019-01-22 Infinitum Electric Inc. System and apparatus for axial field rotary energy device
US10141803B2 (en) 2017-01-11 2018-11-27 Infinitum Electric Inc. System and apparatus for axial field rotary energy device
US10141804B2 (en) 2017-01-11 2018-11-27 Infinitum Electric Inc. System, method and apparatus for modular axial field rotary energy device
US11177726B2 (en) 2017-01-11 2021-11-16 Infinitum Electric, Inc. System and apparatus for axial field rotary energy device
US20190068017A1 (en) * 2017-01-11 2019-02-28 Infinitum Electric Inc. System and apparatus for axial field rotary energy device
US11881751B2 (en) 2017-01-11 2024-01-23 Infinitum Electric, Inc. System and apparatus for segmented axial field rotary energy device
US10340760B2 (en) 2017-01-11 2019-07-02 Infinitum Electric Inc. System and apparatus for segmented axial field rotary energy device
US10680479B2 (en) * 2017-01-11 2020-06-09 Infinitum Electric, Inc. System and apparatus for axial field rotary energy device
US10727712B2 (en) 2017-01-11 2020-07-28 Infinitum Electric, Inc. System and apparatus for axial field rotary energy device
US10135310B2 (en) 2017-01-11 2018-11-20 Infinitum Electric Inc. System and apparatus for modular axial field rotary energy device
US10819174B2 (en) 2017-01-11 2020-10-27 Infinitum Electric, Inc. System and apparatus for segmented axial field rotary energy device
US11588382B2 (en) 2017-07-24 2023-02-21 Murata Manufacturing Co., Ltd. Actuator and method of manufacturing actuator
US10756589B2 (en) * 2017-09-07 2020-08-25 Ibiden Co., Ltd. Motor coil
US10886048B2 (en) * 2017-10-16 2021-01-05 Ibiden Co., Ltd. Laminated coil substrate
US20190115130A1 (en) * 2017-10-16 2019-04-18 Ibiden Co., Ltd. Laminated coil substrate
US11201516B2 (en) 2018-03-26 2021-12-14 Infinitum Electric, Inc. System and apparatus for axial field rotary energy device
US11283319B2 (en) 2019-11-11 2022-03-22 Infinitum Electric, Inc. Axial field rotary energy device with PCB stator having interleaved PCBS
US11336139B2 (en) 2019-11-11 2022-05-17 Infinitum Electric, Inc. Axial field rotary energy device with PCB stator panel having thermally conductive layer
US11710995B2 (en) 2019-11-11 2023-07-25 Infinitum Electric, Inc. Axial field rotary energy device with segmented PCB stator having thermally conductive layer
US11777354B2 (en) 2019-11-11 2023-10-03 Infinitum Electric, Inc. Axial field rotary energy device having PCB stator with non-linear traces
US11183896B2 (en) 2020-01-14 2021-11-23 Infinitum Electric, Inc. Axial field rotary energy device having PCB stator and variable frequency drive
US11509179B2 (en) 2020-01-14 2022-11-22 Infinitum Electric, Inc. Axial field rotary energy device having PCB stator and variable frequency drive
US11482908B1 (en) 2021-04-12 2022-10-25 Infinitum Electric, Inc. System, method and apparatus for direct liquid-cooled axial flux electric machine with PCB stator

Also Published As

Publication number Publication date
US20060220491A1 (en) 2006-10-05
EP1564864A4 (de) 2006-12-13
CN100353646C (zh) 2007-12-05
WO2004047252A1 (ja) 2004-06-03
US7282828B2 (en) 2007-10-16
JPWO2004047252A1 (ja) 2006-03-23
EP1564864A1 (de) 2005-08-17
CN1736013A (zh) 2006-02-15
JP3897122B2 (ja) 2007-03-22

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