JP2013066322A - Motor drive - Google Patents

Motor drive Download PDF

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JP2013066322A
JP2013066322A JP2011204079A JP2011204079A JP2013066322A JP 2013066322 A JP2013066322 A JP 2013066322A JP 2011204079 A JP2011204079 A JP 2011204079A JP 2011204079 A JP2011204079 A JP 2011204079A JP 2013066322 A JP2013066322 A JP 2013066322A
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motor
inverter
shape
circuit board
printed circuit
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JP2011204079A
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Tatsuo Maetani
達男 前谷
Yoshinori Isomura
宜典 礒村
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Panasonic Corp
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Panasonic Corp
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Abstract

PROBLEM TO BE SOLVED: To achieve miniaturization of a drive built in a motor used in various types of electrical apparatuses by minimizing restrictions caused by the size/shape of a case of an inverter IC mounted on a printed circuit board.SOLUTION: A motor drive built in a motor includes an inverter IC having an output corresponding to the number of phases of a motor winding, which is positioned on a printed circuit board of the motor drive. The printed circuit board has a substantially crescent shape. The inverter IC has a shape large enough to be accommodated in the outer periphery of the printed circuit board having the substantially crescent shape and is constructed by integrating a plurality of power switch elements, one or a plurality of drivers IC and a control IC for controlling the motor with resin material.

Description

本発明は、モータの小型化に関し、特に家電空調機器などに用いられる高電圧ブラシレスモータに内蔵されるモータ駆動装置に関する。     The present invention relates to miniaturization of a motor, and more particularly to a motor driving device built in a high-voltage brushless motor used for home appliance air-conditioning equipment and the like.

従来、３０Ｗから１００Ｗを出力する高電圧ブラシレスモータに内蔵されるモータ駆動装置には、第４図のようにインバータＩＣの配置部１０３をモータ外形に合わせたドーナツ型のプリント基板１０２上に配置したモータ駆動装置１０１が、従来例としてあるが、該従来例ではプリント基板の外径寸法がＩＣのケースの寸法形状に制約され小型化が困難であった。上記の従来の構成については、例えば特許文献１、特許文献２などが開示されている。   Conventionally, in a motor driving device built in a high-voltage brushless motor that outputs from 30 W to 100 W, an inverter IC arrangement portion 103 is arranged on a donut-shaped printed circuit board 102 that matches the outer shape of the motor as shown in FIG. The motor drive device 101 is a conventional example, but in the conventional example, the outer diameter dimension of the printed circuit board is restricted by the dimensional shape of the case of the IC, and it is difficult to reduce the size. For example, Patent Literature 1 and Patent Literature 2 are disclosed as the above-described conventional configuration.

また、インバータＩＣの配置部１０３は、第４図のようにモータ制御を行う制御ブロック１０３ａと低電圧の信号から高電圧のパワー素子ブロック１０３ｃを動作させるレベルシフトブロック１０３ｂとパワー素子ブロック１０３ｃの３つのブロックから構成されるため該従来例のプリント基板の大きさが実現できる大きさとなっていたため、小型化が困難であった。   Further, the inverter IC arrangement unit 103 includes a control block 103a for controlling the motor as shown in FIG. 4, a level shift block 103b for operating the high-voltage power element block 103c from a low-voltage signal, and a power element block 103c. Since it is composed of two blocks, the size of the printed circuit board of the conventional example is a size that can be realized, and it is difficult to reduce the size.

さらに、上記従来例では、組立時には、ドーナツ状のプリント基板の略中心の孔はモータのベアリングに接触させない寸値が選択されるが、組立時にプリント基板をベアリングおよび金型等に当て、プリント基板上の電子部品等々を損傷させ信頼性が低下するということに対しても、何らかの配慮を要した。上記の従来の構成については、例えば特許文献３などが開示されている。   Furthermore, in the above conventional example, when assembling, a dimension value is selected so that the hole at the center of the donut-shaped printed circuit board does not contact the motor bearing, but at the time of assembly, the printed circuit board is applied to the bearing and mold, etc. Some consideration was required for the deterioration of the reliability due to the damage of the above electronic components. For example, Patent Document 3 is disclosed as the conventional configuration.

特開平２−１８４２４８号公報Japanese Patent Laid-Open No. 2-184248 特開平４−２６３４９号公報JP-A-4-26349 特開平２−１８４２４９号公報JP-A-2-184249

本発明が解決しようとする課題は、モータ内蔵のプリント基板の外周寸法が、プリント基板上に実装するインバータＩＣのケースの寸法形状により受ける制約を最小限に留め、モータに内蔵する駆動装置の小型化を実現することである。   The problem to be solved by the present invention is to minimize the limitation imposed by the size and shape of the case of the inverter IC mounted on the printed circuit board on the outer periphery of the printed circuit board with a built-in motor. It is to realize.

本発明は、上記課題を解決するためにプリント基板を半月形状とし、かつインバータＩＣの外形を、半月形状の形態をしたプリント基板の外周円内に収まるように、かつ複数のパワースイッチ素子並びに１つもしくは複数のドライバＩＣ並びにモータを制御する制御ＩＣを樹脂材料で一体成型したパワーモジュールとしたことを特徴とする。   In order to solve the above-described problems, the present invention has a printed circuit board having a half-moon shape, and the outer shape of the inverter IC is set within the outer circumference of the printed board having a half-moon shape, and a plurality of power switch elements and 1 One or a plurality of driver ICs and a control IC for controlling a motor are formed into a power module integrally formed of a resin material.

本発明は、モータに内蔵するモータ駆動装置で、該駆動装置は、プリント配線板上にモータ巻線相数分の出力を有するインバータＩＣを備えたものであって、前記プリント基板を概略半月形状の形態とし、かつ前記インバータＩＣは、前記概略半月形状の形態をしたプリント配線板の外周内に収まるような形状を有し、かつ複数のパワースイッチ素子並びに１つもしくは複数のドライバＩＣ並びにモータを制御する制御ＩＣを樹脂材料で一体成型したパワーモジュールとしたことを特徴とするモータ駆動装置であり、モータの小型化および組立て時の作業の簡素化を図ることが出来るという作用を有する。   The present invention relates to a motor driving device built in a motor, and the driving device includes an inverter IC having an output corresponding to the number of motor winding phases on a printed wiring board. And the inverter IC has a shape that fits within the outer periphery of the printed wiring board having the substantially half-moon shape, and includes a plurality of power switch elements, one or a plurality of driver ICs, and a motor. The motor driving device is characterized in that the control IC to be controlled is a power module integrally formed of a resin material, and has an effect that the motor can be miniaturized and the work at the time of assembly can be simplified.

また、上記発明において、インバータＩＣの外観形状が表面実装型のＢＧＡ（Ｂａｌｌ Ｇｒｉｄ Ａｒｒａｙ）パッケージ又ＱＦＮ（Ｑｕａｄ Ｆｌａｔ Ｎｏｎ−Ｌｅａｄｅｄ）パッケージとして構成したモータ駆動装置では、モータの更なる小型化を図ることが出来るという作用を有する。   Further, in the above-described invention, in the motor driving device in which the external shape of the inverter IC is configured as a surface mount type BGA (Ball Grid Array) package or a QFN (Quad Flat Non-Leaded) package, the motor is further miniaturized. Has the effect of being able to.

インバータＩＣの外形を、半月形状の形態をしたプリント基板の外周円内に収まるように、かつ複数のパワースイッチ素子並びに１つもしくは複数のドライバＩＣ並びにモータを制御する制御ＩＣを樹脂材料で一体成型したパワーモジュールとすることで、モータ駆動装置を構成するプリント基板の形状をドーナツ型から概略半月形状とすることができ、前記駆動装置を内蔵するモータの小型化が容易になり、かつベアリングや金型に当ててしまうといった組立て作業の不具合も避け易くなるという効果がある。   A control IC for controlling a plurality of power switch elements, one or a plurality of driver ICs, and a motor is integrally formed of a resin material so that the outer shape of the inverter IC fits within the outer circumference of a printed circuit board having a half-moon shape. By using the power module, the shape of the printed circuit board constituting the motor drive device can be changed from a donut shape to a roughly half moon shape, the motor incorporating the drive device can be easily downsized, and a bearing or metal There is an effect that it is easy to avoid problems in assembly work such as hitting the mold.

（ａ）本発明のモータ駆動装置の平面図、（ｂ）前記に搭載するインバータＩＣの内部の構成に関する説明図(A) The top view of the motor drive device of this invention, (b) Explanatory drawing regarding the internal structure of the inverter IC mounted in the above. 本発明のモータ駆動装置に搭載するインバータＩＣの外観図External view of inverter IC mounted on motor drive device of the present invention 本発明のモータ駆動装置に搭載するインバータＩＣの外観図External view of inverter IC mounted on motor drive device of the present invention 従来例のモータ駆動装置の平面図Plan view of a conventional motor drive device

以下本発明を実施するための形態を、図面を参照しながら説明する。   Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

図１（ａ）は、本発明のモータ駆動装置１、図１（ｂ）は、前記駆動装置のプリント基板２の回路配線上に搭載するインバータＩＣ３の形状を示す。図１（ｂ）に示すように、インバータＩＣ３はモータ制御を行う制御ブロック３ａ（モータを制御する制御ＩＣ）と低電圧の信号から高電圧のパワースイッチ素子のブロック３ｃを動作させるレベルシフトのブロック３ｂ（ドライバＩＣ）とパワースイッチ素子のブロック３ｃの３つのブロックを１つのパッケージ内に搭載していることから、ドーナツ型のプリント基板ではなく、概略半月形状のプリント基板上にモータ駆動装置を実現できることから、モータ駆動装置の小型化を実現できる。   FIG. 1A shows the shape of the motor drive device 1 of the present invention, and FIG. 1B shows the shape of the inverter IC 3 mounted on the circuit wiring of the printed circuit board 2 of the drive device. As shown in FIG. 1B, the inverter IC 3 includes a control block 3a for controlling the motor (control IC for controlling the motor) and a level shift block for operating the block 3c of the high voltage power switch element from the low voltage signal. 3b (driver IC) and power switch element block 3c are mounted in one package, so a motor drive device is realized on a roughly half-moon shaped printed board instead of a donut shaped printed board Therefore, the motor drive device can be downsized.

なお、リード線４は、インバータＩＣ３等によって構成されるモータ駆動装置の回路と、モータ駆動装置の外部の回路とを電気的接続を行うものである。   The lead wire 4 is used to electrically connect a circuit of the motor driving device constituted by the inverter IC 3 and the like to a circuit outside the motor driving device.

また、組立て時にベアリングとの干渉防止のためドーナツ型では設けていた孔を有さないため、ベアリングの干渉を考慮した治具が不要となり、製造工程における作業性が改善できる。例えば、作業者における難度の高い技能作業である緻密な作業も簡素化可能となり、ベアリングとの干渉により発生する電子部品への意図しない過剰な機械的負荷を抑制可能となり、モータ駆動装置の信頼性を高めることができる。   In addition, since there is no hole provided in the donut shape in order to prevent interference with the bearing at the time of assembly, a jig considering the interference of the bearing becomes unnecessary, and workability in the manufacturing process can be improved. For example, it is possible to simplify precise work, which is a highly difficult skill work for workers, and to suppress unintentional excessive mechanical load on electronic components caused by interference with bearings, and reliability of motor drive devices Can be increased.

図２は、インバータＩＣの外観形状が表面実装型のＢＧＡ（Ｂａｌｌ Ｇｒｉｄ Ａｒｒａｙ）パッケージとしたもので、概略半月形状のプリント基板に搭載することで図１同様の小型化の効果が得られる。   FIG. 2 shows a BGA (Ball Grid Array) package in which the appearance of the inverter IC is a surface mount type. By mounting the inverter IC on a roughly half-moon shaped printed circuit board, the same miniaturization effect as in FIG. 1 can be obtained.

なお、上記各実施例において、駆動装置のプリント基板の形状が概略半月形状である場合を示したが、モータへ内蔵できる形状であればＬ字形状やかまぼこ形状や弓形状としても構わない。   In each of the above-described embodiments, the case where the shape of the printed circuit board of the driving device is approximately a half-moon shape has been shown.

図２は、インバータＩＣの外観形状が表面実装型のＱＦＮ（Ｑｕａｄ Ｆｌａｔ Ｎｏｎ−Ｌｅａｄｅｄ）パッケージとしたもので、概略半月形状のプリント基板に搭載することで図１同様の小型化の効果が得られる。   FIG. 2 shows a QFN (Quad Flat Non-Leaded) package whose appearance shape of the inverter IC is a surface mount type. By mounting the inverter IC on a roughly half-moon shaped printed circuit board, the same miniaturization effect as in FIG. 1 can be obtained. .

なお、上記各実施例において、駆動装置のプリント基板の形状が概略半月形状である場合を示したが、モータへ内蔵できる形状であればＬ字形状やかまぼこ形状や弓形状としても構わない。   In each of the above-described embodiments, the case where the shape of the printed circuit board of the driving device is approximately a half-moon shape has been shown.

本発明はモータの体格の小型化を図ることが可能であり、ＩＣを配置したプリント基板を内蔵した製品の小型化に寄与することも可能である。   The present invention can reduce the physique of the motor and can contribute to the downsizing of a product incorporating a printed circuit board on which an IC is arranged.

１ モータ駆動装置
２ プリント基板
３ インバータＩＣ
４ リード線
１０１ モータ駆動装置
１０２ プリント基板
１０３ インバータＩＣの配置部 1 Motor drive device 2 Printed circuit board 3 Inverter IC
4 Lead wire 101 Motor drive device 102 Printed circuit board 103 Arrangement part of inverter IC

Claims (2)

モータに内蔵するモータ駆動装置において、このモータ駆動装置のプリント配線板上にモータ巻線相数分の出力を有するインバータＩＣを備えた構成を有し、前記プリント配線板は略半月形状の形状であり、かつ前記インバータＩＣは、前記略半月形状の形状をしたプリント配線板の外周内に収まる形状を有し、かつ複数のパワースイッチ素子と、１つ又は複数のドライバＩＣと、モータを制御する制御ＩＣとを樹脂材料で一体成型したパワーモジュールの構成であることを特徴とするモータ駆動装置。 The motor driving device built in the motor has a configuration including an inverter IC having outputs corresponding to the number of motor winding phases on the printed wiring board of the motor driving device, and the printed wiring board has a substantially half-moon shape. And the inverter IC has a shape that fits within an outer periphery of the printed circuit board having a substantially half-moon shape, and controls a plurality of power switch elements, one or a plurality of driver ICs, and a motor. A motor driving device characterized in that it has a configuration of a power module in which a control IC is integrally molded with a resin material. インバータＩＣの外観形状が表面実装型である請求項１記載のモータ駆動装置。 The motor drive device according to claim 1, wherein the appearance shape of the inverter IC is a surface mount type.
JP2011204079A 2011-09-20 2011-09-20 Motor drive Pending JP2013066322A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2812528B2 (en) * 1990-03-20 1998-10-22 株式会社日立製作所 Inverter circuit
JP2005020803A (en) * 2003-06-23 2005-01-20 Matsushita Electric Ind Co Ltd Control unit, control unit for compressor, and compressor
JP2007185013A (en) * 2006-01-05 2007-07-19 Matsushita Electric Ind Co Ltd Brushless motor with built-in high withstand voltage pre-driver ic
JP2008125315A (en) * 2006-11-15 2008-05-29 Matsushita Electric Ind Co Ltd Motor drive device
JP2008187798A (en) * 2007-01-29 2008-08-14 Mitsubishi Electric Corp Motor with power conversion circuit incorporated and equipment equipped therewith
JP2009247089A (en) * 2008-03-31 2009-10-22 Hitachi Ltd Method of controlling inverters for brushless motors and device using the same
JP2010183797A (en) * 2009-02-09 2010-08-19 Mitsubishi Electric Corp Power converter, motor with built-in drive circuit incorporating the same, ventilation fan mounting the motor with the built-in drive circuit, interior unit of air conditioner, air conditioner, pump, and water heater mounting the pump

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2812528B2 (en) * 1990-03-20 1998-10-22 株式会社日立製作所 Inverter circuit
JP2005020803A (en) * 2003-06-23 2005-01-20 Matsushita Electric Ind Co Ltd Control unit, control unit for compressor, and compressor
JP2007185013A (en) * 2006-01-05 2007-07-19 Matsushita Electric Ind Co Ltd Brushless motor with built-in high withstand voltage pre-driver ic
JP2008125315A (en) * 2006-11-15 2008-05-29 Matsushita Electric Ind Co Ltd Motor drive device
JP2008187798A (en) * 2007-01-29 2008-08-14 Mitsubishi Electric Corp Motor with power conversion circuit incorporated and equipment equipped therewith
JP2009247089A (en) * 2008-03-31 2009-10-22 Hitachi Ltd Method of controlling inverters for brushless motors and device using the same
JP2010183797A (en) * 2009-02-09 2010-08-19 Mitsubishi Electric Corp Power converter, motor with built-in drive circuit incorporating the same, ventilation fan mounting the motor with the built-in drive circuit, interior unit of air conditioner, air conditioner, pump, and water heater mounting the pump

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