JP2016174501A - Rotary electric machine structure - Google Patents

Rotary electric machine structure Download PDF

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JP2016174501A
JP2016174501A JP2015054219A JP2015054219A JP2016174501A JP 2016174501 A JP2016174501 A JP 2016174501A JP 2015054219 A JP2015054219 A JP 2015054219A JP 2015054219 A JP2015054219 A JP 2015054219A JP 2016174501 A JP2016174501 A JP 2016174501A
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passage
cooling water
housing
inverter
cooling medium
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JP6582468B2 (en
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洋三 廣瀬
Yozo Hirose
洋三 廣瀬
準 巽
Jun Tatsumi
準 巽
修二 足立
Shuji Adachi
修二 足立
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To inhibit leakage of a cooling medium to a housing of a rotary electric machine structure.SOLUTION: A housing 1 includes a motor part 3 and an inverter part 5. An inverter module 9 is attached to the inverter part 5. In the inverter module 9, electronic components, such as a power module 17, are attached onto a tray 13. The tray 13 includes a cooling structure part 21 on a lower surface. The cooling structure part 21 includes: an inner wall plate 23 including an inner tube 23d; and an outer wall plate 25 including an outer tube 25d. The inner tube 23d is connected to a through hole 35 of a division wall 31 which divides the motor part 3 from the inverter part 5, and the outer tube 25d is connected to a recessed part 37 around the through hole 35. An inner passage 49 of the inner tube 23d communicates with a housing coolant passage 39 of the motor part 3, and an outer passage 47 between the inner tube 23d and the outer tube 25d communicates with a coolant introduction passage 43. A communication hole 23h is formed in the inner wall plate 23.SELECTED DRAWING: Figure 3

Description

本発明は、回転電機と電力変換装置とを備える回転電機構造に関する。   The present invention relates to a rotating electrical machine structure including a rotating electrical machine and a power converter.

下記特許文献１には、回転電機を有するモータ部と電力変換装置を有するインバータ部とが、一つのハウジングを共有することで一体化された技術が開示されている。インバータ部は、インバータ部品として、パワー半導体素子を収容するパワーモジュール、平滑コンデンサ、モータ制御基板などを備えている。ハウジングには、モータ部とインバータ部とを冷却する共有の冷却用水路が設けられている。   Patent Document 1 below discloses a technique in which a motor unit having a rotating electrical machine and an inverter unit having a power converter are integrated by sharing one housing. The inverter unit includes, as inverter parts, a power module that houses a power semiconductor element, a smoothing capacitor, a motor control board, and the like. The housing is provided with a common cooling water channel for cooling the motor unit and the inverter unit.

特開２０１１−１８２４８０号公報JP 2011-182480 A

特許文献１では、共有の冷却用水路によって、モータ部とインバータ部との双方を冷却している。この場合、冷却用水路からハウジング内への冷却水の漏れに関しては高い信頼性が必要となる。   In Patent Document 1, both the motor unit and the inverter unit are cooled by a common cooling water channel. In this case, high reliability is required for leakage of cooling water from the cooling water channel into the housing.

そこで、本発明は、回転電機構造のハウジング内への冷却媒体の漏れを抑制することを目的としている。   Therefore, an object of the present invention is to suppress the leakage of the cooling medium into the housing of the rotating electrical machine structure.

本発明は、ハウジングの電力変換装置収容部に収容され、電力変換装置が取り付けられる取付部材と、取付部材に設けられて電力変換装置を冷却する冷却媒体通路と、冷却媒体通路に連通するハウジング冷却媒体通路と、を有する。冷却媒体通路のハウジング冷却媒体通路との接続部は、冷却媒体の入口と出口とのいずれか一方に連通する外側通路と、冷却媒体の入口と出口とのいずれか他方に連通し、外側通路の内側に位置する内側通路と、を備える二重管構造であることを特徴とする。   The present invention includes an attachment member that is housed in a power conversion device housing portion of a housing and to which the power conversion device is attached, a cooling medium passage that is provided on the attachment member and cools the power conversion device, and housing cooling that communicates with the cooling medium passage. A medium passage. The connecting portion of the cooling medium passage with the housing cooling medium passage communicates with either the outer passage communicating with either the inlet or the outlet of the cooling medium, or with either one of the inlet or outlet of the cooling medium. It is a double pipe structure provided with the inner side channel located inside.

本発明によれば、内側通路を流れる冷却媒体は、例え漏れたとしても外側通路に流出するので、ハウジング内への漏れを抑制できる。   According to the present invention, even if the cooling medium flowing in the inner passage flows out to the outer passage even if it leaks, leakage into the housing can be suppressed.

本発明の第１の実施形態に係わる回転電機構造の分解斜視図である。It is a disassembled perspective view of the rotary electric machine structure concerning the 1st Embodiment of this invention. 図１の回転電機構造の組み付付け状態の斜視図である。It is a perspective view of the assembly | attachment state of the rotary electric machine structure of FIG. 図２の冷却構造部周辺を示すＡ−Ａ断面図である。It is AA sectional drawing which shows the cooling structure part periphery of FIG. 図２の冷却構造部周辺を示すＢ−Ｂ断面図である。FIG. 3 is a BB cross-sectional view showing the periphery of the cooling structure portion of FIG. 2. 本発明の第２の実施形態を示し、（ａ）は複数の連通孔を備える内壁板をベース板に取り付けた状態を示す底面図、（ｂ）は、（ａ）のベース板にさらに外壁板を取り付けた状態を示す底面図である。The 2nd Embodiment of this invention is shown, (a) is a bottom view which shows the state which attached the inner wall board provided with a some communicating hole to the base board, (b) is an outer wall board further to the base board of (a). It is a bottom view which shows the state which attached.

以下、本発明の実施の形態を図面に基づき説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の第１の実施形態に係わる回転電機構造の分解斜視図で、図２は組み付付け状態の回転電機構造の斜視図である。回転電機構造のハウジング１は、大略円筒形状のモータ部３と、モータ部３の円筒形状部分の図１中で上部側の側部に一体的に設けられて大略直方体形状のインバータ部５とを備えている。   FIG. 1 is an exploded perspective view of a rotating electrical machine structure according to the first embodiment of the present invention, and FIG. 2 is a perspective view of the rotating electrical machine structure in an assembled state. A housing 1 having a rotating electrical machine structure includes a motor portion 3 having a substantially cylindrical shape, and an inverter portion 5 having a substantially rectangular parallelepiped shape which is integrally provided on the upper side of the cylindrical portion of the motor portion 3 in FIG. I have.

モータ部３内には、回転電機としてのモータ７が収容され、インバータ部５内には、電力変換装置としてのインバータを含むインバータモジュール９が収容される。したがって、モータ部３は回転電機収容部を構成し、インバータ部５は電力変換装置収容部を構成する。インバータモジュール９をインバータ部５内に収容した状態で、カバー１１を、インバータ部５の開口部に、図示しないボルトを用いて固定して図２の状態となる。   A motor 7 as a rotating electrical machine is accommodated in the motor unit 3, and an inverter module 9 including an inverter as a power converter is accommodated in the inverter unit 5. Therefore, the motor part 3 comprises a rotary electric machine accommodating part, and the inverter part 5 comprises a power converter device accommodating part. In a state where the inverter module 9 is housed in the inverter unit 5, the cover 11 is fixed to the opening of the inverter unit 5 using a bolt (not shown) to be in the state of FIG.

インバータモジュール９は、トレー１３のベース板１４上にインバータ部品を取り付けている。インバータ部品は、平滑コンデンサ１５、パワー半導体素子を備えるパワーモジュール１７、ドライバ基板１９などを備え、これらの部品によってインバータを構成する。トレー１３のインバータ部品と反対側には、冷却構造部２１を設けている。ベース板１４は、インバータ部５の開口部周縁に設けてある段差部５ａに載せた状態で、図示しないねじなどを用いてインバータ部５に固定する。   In the inverter module 9, inverter components are mounted on the base plate 14 of the tray 13. The inverter component includes a smoothing capacitor 15, a power module 17 including a power semiconductor element, a driver board 19, and the like, and an inverter is constituted by these components. A cooling structure 21 is provided on the opposite side of the tray 13 from the inverter components. The base plate 14 is fixed to the inverter unit 5 using a screw or the like (not shown) in a state where the base plate 14 is placed on the stepped portion 5a provided at the periphery of the opening of the inverter unit 5.

冷却構造部２１は、図３、図４に示すように、ベース板１４のモータ部３側に取り付けられる内壁板２３と、内壁板２３を覆うようにして内壁板２３の外側でベース板１４のモータ部３側に取り付けられる外壁板２５と、を備えている。内壁板２３及び外壁板２５は、内壁部材及び外壁部材をそれぞれ構成する。金属製のベース板１４に、プレス成形などで製造した内壁板２３及び外壁板２５を、ろう付け、溶接、接着、ボルト固定などによって取り付ける。ベース板１４、内壁板２３、外壁板２５により、電力変換装置が取り付けられる取付部材を構成している。なお、図３では、インバータ部品は省略している。   As shown in FIGS. 3 and 4, the cooling structure 21 includes an inner wall plate 23 attached to the motor unit 3 side of the base plate 14, and an outer wall of the base plate 14 so as to cover the inner wall plate 23. And an outer wall plate 25 attached to the motor unit 3 side. The inner wall plate 23 and the outer wall plate 25 constitute an inner wall member and an outer wall member, respectively. The inner wall plate 23 and the outer wall plate 25 manufactured by press molding or the like are attached to the metal base plate 14 by brazing, welding, adhesion, bolt fixing, or the like. The base plate 14, the inner wall plate 23, and the outer wall plate 25 constitute an attachment member to which the power converter is attached. In FIG. 3, inverter parts are omitted.

内壁板２３は、ベース板１４に固定される周縁フランジ２３ａと、周縁フランジ２３ａの内端に連続して周囲四方に設けられる側壁２３ｂと、側壁２３ｂの下端に連続する底壁２３ｃと、を備えている。底壁２３ｃの図４中で左側に位置する一方の端部付近に、内管２３ｄを設けている。内管２３ｄは、底壁２３ｃと一体成形されたものでもよく、別体として底壁２３ｃに溶接などによって固定してもよい。   The inner wall plate 23 includes a peripheral flange 23a that is fixed to the base plate 14, a side wall 23b that is provided in four directions around the inner end of the peripheral flange 23a, and a bottom wall 23c that is continuous with the lower end of the side wall 23b. ing. An inner tube 23d is provided near one end located on the left side of the bottom wall 23c in FIG. The inner tube 23d may be integrally formed with the bottom wall 23c, or may be fixed to the bottom wall 23c as a separate body by welding or the like.

外壁板２５は、周縁フランジ２３ａの外側でベース板１４に固定される周縁フランジ２５ａと、周縁フランジ２５ａの内端に連続して周囲四方に設けられる側壁２５ｂと、側壁２５ｂの下端に連続する底壁２５ｃと、を備えている。底壁２５ｃの図４中で左側に位置する一方の端部付近に、外管２５ｄを設けている。外管２５ｄは、内管２３ｄの外側を覆っている。外管２５ｄは、底壁２５ｃと一体成形されたものでもよく、別体として底壁２５ｃに溶接などによって固定してもよい。   The outer wall plate 25 includes a peripheral flange 25a that is fixed to the base plate 14 outside the peripheral flange 23a, a side wall 25b that is provided continuously around the inner end of the peripheral flange 25a, and a bottom that is continuous with the lower end of the side wall 25b. And a wall 25c. An outer tube 25d is provided near one end located on the left side of the bottom wall 25c in FIG. The outer tube 25d covers the outer side of the inner tube 23d. The outer tube 25d may be integrally formed with the bottom wall 25c, or may be fixed to the bottom wall 25c by welding or the like as a separate body.

内壁板２３と外壁板２５との間には、第１媒体通路としての入口冷却水空間２７が形成される。内壁板２３とベース板１４との間には、第２媒体通路としての出口冷却水空間２９が形成される。したがって、内壁板２３は、入口冷却水空間２７と出口冷却水空間２９との間に位置する仕切壁となり、内壁板２３を間にして、モータ７側に入口冷却水空間２７が位置し、インバータ側に出口冷却水空間２９が位置する。   An inlet cooling water space 27 as a first medium passage is formed between the inner wall plate 23 and the outer wall plate 25. An outlet cooling water space 29 as a second medium passage is formed between the inner wall plate 23 and the base plate 14. Therefore, the inner wall plate 23 becomes a partition wall positioned between the inlet cooling water space 27 and the outlet cooling water space 29, and the inlet cooling water space 27 is positioned on the motor 7 side with the inner wall plate 23 interposed therebetween. An outlet cooling water space 29 is located on the side.

内壁板２３における底壁２３ｃの図４中で右側に位置する他方の端部付近には、連通孔２３ｈが形成されている。連通孔２３ｈは、入口冷却水空間２７と出口冷却水空間２９とを互いに連通する連通路を構成している。連通路と第１媒体通路と第２媒体通路とで、冷却媒体通路を構成している。   A communication hole 23h is formed in the vicinity of the other end located on the right side of the bottom wall 23c of the inner wall plate 23 in FIG. The communication hole 23h constitutes a communication path that connects the inlet cooling water space 27 and the outlet cooling water space 29 to each other. The communication passage, the first medium passage, and the second medium passage constitute a cooling medium passage.

図３、図４に示すように、モータ部３とインバータ部５との間には、隔壁３１を設けている。隔壁３１の内管２３ｄ及び外管２５ｄに対応する位置には、配管接続部３３を設けている。配管接続部３３は、中心部に貫通孔３５を形成してあり、貫通孔３５に内管２３ｄを密閉状態で挿入固定している。貫通孔３５の周囲には、ベース板１４側に開口する環状の凹部３７を形成している。凹部３７に外管２５ｄを密閉状態で挿入固定している。   As shown in FIGS. 3 and 4, a partition wall 31 is provided between the motor unit 3 and the inverter unit 5. A pipe connection portion 33 is provided at a position corresponding to the inner pipe 23d and the outer pipe 25d of the partition wall 31. The pipe connecting portion 33 has a through hole 35 formed in the center thereof, and the inner tube 23d is inserted and fixed in the through hole 35 in a sealed state. Around the through hole 35, an annular recess 37 that opens to the base plate 14 side is formed. The outer tube 25d is inserted and fixed in the recess 37 in a sealed state.

貫通孔３５は、モータ部３の壁部内に形成してあるハウジング冷却媒体通路としてのハウジング冷却水通路３９に連通接続される。ハウジング冷却水通路３９を、冷却媒体としての冷却水が流れることでモータ７が冷却される。モータ７を冷却した冷却水は、図１に示すモータ部３の冷却水排出配管４１から外部に排出される。   The through hole 35 is connected in communication with a housing cooling water passage 39 as a housing cooling medium passage formed in the wall portion of the motor portion 3. The motor 7 is cooled by the cooling water as the cooling medium flowing through the housing cooling water passage 39. The cooling water that has cooled the motor 7 is discharged to the outside from the cooling water discharge pipe 41 of the motor unit 3 shown in FIG.

図３に示すように、隔壁３１には、凹部３７に一端が連通する冷却水導入通路４３を形成してある。冷却水導入通路４３の他端は、ハウジング１の外部に開口して冷却水導入配管４５に接続され、冷却水導入配管４５には図示しない冷却水ポンプが接続される。   As shown in FIG. 3, the partition wall 31 is formed with a cooling water introduction passage 43 having one end communicating with the recess 37. The other end of the cooling water introduction passage 43 opens to the outside of the housing 1 and is connected to a cooling water introduction pipe 45, and a cooling water pump (not shown) is connected to the cooling water introduction pipe 45.

よって、冷却水ポンプから冷却水導入配管４５に送られる冷却水は、冷却水導入通路４３を経て、内管２３ｄと外管２５ｄとの間の外側通路４７、入口冷却水空間２７、連通孔２３ｈ、出口冷却水空間２９、内管２３ｄ内の内側通路４９、貫通孔３５、ハウジング冷却水通路３９、冷却水排出配管４１の順に流れる。   Therefore, the cooling water sent from the cooling water pump to the cooling water introduction pipe 45 passes through the cooling water introduction passage 43, the outer passage 47 between the inner pipe 23d and the outer pipe 25d, the inlet cooling water space 27, the communication hole 23h. The outlet cooling water space 29, the inner passage 49 in the inner pipe 23d, the through hole 35, the housing cooling water passage 39, and the cooling water discharge pipe 41 flow in this order.

冷却水が、入口冷却水空間２７や出口冷却水空間２９を流れることで、パワーモジュール１７などのインバータ部品が冷却される。さらに、冷却水が、ハウジング冷却水通路３９を流れることで、モータ７が冷却される。   As the cooling water flows through the inlet cooling water space 27 and the outlet cooling water space 29, the inverter components such as the power module 17 are cooled. Further, the cooling water flows through the housing cooling water passage 39, whereby the motor 7 is cooled.

本実施形態は、冷却媒体通路を構成する入口冷却水空間２７及び出口冷却水空間２９の、インバータ部品と反対側に位置するハウジング冷却水通路３９との接続部は、内管２３ｄと外管２５ｄとを備える二重管構造となっている。換言すれば、二重管構造は、ハウジング１における冷却水の入口となる冷却水導入配管４５に連通する外側通路４７と、冷却水の出口となる冷却水排出配管４１に連通する内側通路４９とを備えている。内側通路４９は外側通路４７の内側に位置している。   In the present embodiment, the connection portion of the inlet cooling water space 27 and the outlet cooling water space 29 constituting the cooling medium passage to the housing cooling water passage 39 located on the opposite side to the inverter component is the inner pipe 23d and the outer pipe 25d. It has a double tube structure. In other words, the double pipe structure includes an outer passage 47 that communicates with the cooling water introduction pipe 45 that serves as the cooling water inlet in the housing 1, and an inner passage 49 that communicates with the cooling water discharge pipe 41 that serves as the cooling water outlet. It has. The inner passage 49 is located inside the outer passage 47.

このため、内側通路４９から貫通孔３５に向けて流れる冷却水が、内管２３ｄと貫通孔３５との接続部から例え外側に漏れたとしても、漏れた冷却水は、外側通路４７に流出し、ハウジング１のインバータ部５内（冷却構造部２１の外側のインバータ部５内）への流出は抑制できる。これにより、内管２３ｄと貫通孔３５との接続部におけるシール構造は簡素化できる。   For this reason, even if the cooling water flowing from the inner passage 49 toward the through hole 35 leaks to the outside from the connecting portion between the inner tube 23d and the through hole 35, the leaked cooling water flows out to the outer passage 47. The outflow into the inverter part 5 of the housing 1 (inside the inverter part 5 outside the cooling structure part 21) can be suppressed. Thereby, the seal structure in the connection part of the inner tube 23d and the through hole 35 can be simplified.

シール構造の簡素化としては、例えば、Ｏリングなどのシール部材を使用せず、内管２３ｄを貫通孔３５に密閉状態で挿入するだけでよい。外管２５ｄと凹部３７との接続部におけるシール構造は、Ｏリングなどのシール部材を使用して密閉度をより高める。   For simplification of the seal structure, for example, it is only necessary to insert the inner tube 23d into the through hole 35 in a sealed state without using a seal member such as an O-ring. The seal structure at the connection portion between the outer tube 25d and the recess 37 uses a seal member such as an O-ring to further increase the degree of sealing.

本実施形態は、トレー１３の冷却媒体通路は、内壁板２３を間にモータ７側に位置して外側通路４７に連通する入口冷却水空間２７と、内壁板２３を間にインバータ側に位置して内側通路４９に連通する冷却水空間２９と、内壁板２３に設けられ、入口冷却水空間２７と出口冷却水空間２９とを連通する連通孔２３ｈと、を有する。   In the present embodiment, the cooling medium passage of the tray 13 is located on the inverter side with the inlet cooling water space 27 communicating with the outer passage 47 with the inner wall plate 23 positioned on the motor 7 side. A cooling water space 29 communicating with the inner passage 49 and a communication hole 23 h provided in the inner wall plate 23 for communicating the inlet cooling water space 27 and the outlet cooling water space 29.

このため、外側通路４７から入口冷却水空間２７に流入した冷却水を、連通孔２３ｈを通して出口冷却水空間２９に流入させてインバータ部品を冷却することができる。冷却後の冷却水は、出口冷却水空間２９から内側通路４９を通してハウジング冷却水通路３９に向けて流すことができる。   For this reason, the cooling water that has flowed into the inlet cooling water space 27 from the outer passage 47 can flow into the outlet cooling water space 29 through the communication hole 23h to cool the inverter component. The cooled cooling water can flow from the outlet cooling water space 29 through the inner passage 49 toward the housing cooling water passage 39.

本実施形態は、トレー１３は、インバータ部品が取り付けられるベース板１４と、ベース板１４のモータ部３側に取り付けられてベース板１４との間に出口冷却水空間２９を形成し、連通孔２３ｈを備える内壁板２３と、内壁板２３のベース板１４と反対側に取り付けられて内壁板２３との間に入口冷却水空間２７を形成する外壁板２５と、を有する。   In this embodiment, the tray 13 is attached to the base plate 14 to which the inverter component is attached and the motor plate 3 side of the base plate 14 to form an outlet cooling water space 29 between the base plate 14 and the communication hole 23h. And an outer wall plate 25 which is attached to the inner wall plate 23 on the opposite side of the base plate 14 and forms an inlet cooling water space 27 between the inner wall plate 23 and the inner wall plate 23.

このため、冷却構造部２１は、ベース板１４に内壁板２３及び外壁板２５を順次重ね合わせるという簡素な構造で、ハウジング１側の配管接続部３３に接続する接続部を二重管構造とすることができる。   Therefore, the cooling structure portion 21 has a simple structure in which the inner wall plate 23 and the outer wall plate 25 are sequentially overlapped with the base plate 14, and the connection portion connected to the pipe connection portion 33 on the housing 1 side has a double tube structure. be able to.

図５（ａ）は、ベース板１４に第２の実施形態による内壁板２３Ａを取り付けた状態を示す底面図、図５（ｂ）は、図５（ａ）のベース板１４にさらに図３、図４と同様の外壁板２５を取り付けた状態を示す底面図である。第２の実施形態は、内壁板２３Ａに複数の連通孔２３Ａｈを連通路として設けている。その他の構成は第１の実施形態と同様である。   FIG. 5A is a bottom view showing a state in which the inner wall plate 23A according to the second embodiment is attached to the base plate 14, and FIG. 5B is an additional view of the base plate 14 of FIG. It is a bottom view which shows the state which attached the outer wall board 25 similar to FIG. In the second embodiment, the inner wall plate 23A is provided with a plurality of communication holes 23Ah as communication paths. Other configurations are the same as those of the first embodiment.

第２の実施形態は、外側通路４７から入口冷却水空間２７に流入した冷却水が、図５（ｂ）の破線矢印で示すように、複数の連通孔２３Ａｈに向けて個別に流れる。さらに、複数の連通孔２３Ａｈから出口冷却水空間２９に流出した冷却水は、図５（ａ）の破線矢印で示すように、複数の連通孔２３Ａｈから内管２３Ａｄの内側通路４９に向けて個別に流れる。   In the second embodiment, the cooling water that has flowed into the inlet cooling water space 27 from the outer passage 47 flows individually toward the plurality of communication holes 23Ah, as indicated by broken line arrows in FIG. Furthermore, the cooling water flowing out from the plurality of communication holes 23Ah into the outlet cooling water space 29 is individually separated from the plurality of communication holes 23Ah toward the inner passage 49 of the inner pipe 23Ad, as indicated by broken line arrows in FIG. Flowing into.

このように、第２の実施形態は、入口冷却水空間２７及び出口冷却水空間２９内を流れる冷却水は、分散することになり、全体として流れの均一化を図ることができる。これにより、トレー１３に取り付けてある複数のインバータ部品は、位置による冷却性のばらつきが抑制されて冷却効果が均一化され、全体として冷却効果が高まる。   Thus, in the second embodiment, the cooling water flowing in the inlet cooling water space 27 and the outlet cooling water space 29 is dispersed, and the flow can be made uniform as a whole. As a result, the plurality of inverter components attached to the tray 13 are suppressed in variation in cooling performance depending on the position, the cooling effect is made uniform, and the cooling effect is enhanced as a whole.

ハウジング１の配管接続部３３は、冷却構造部２１への冷却水の入口部分と出口部分とが同一位置となるので、入口部分と出口部分とが別の位置にある場合に比較して、設置位置に制約が発生する場合がある。このため、入口冷却水空間２７及び出口冷却水空間２９内での冷却水の流れが、淀みを有するものとなって最適なものにできない恐れがある。そこで、第２の実施形態のように、連通孔２３Ａｈを複数設けることで、冷却水の流れをより均一化して淀みを抑制することができる。   The piping connection portion 33 of the housing 1 is installed in comparison with the case where the inlet portion and the outlet portion are at different positions because the inlet portion and the outlet portion of the cooling water to the cooling structure portion 21 are at the same position. There may be restrictions on the position. For this reason, there is a possibility that the flow of the cooling water in the inlet cooling water space 27 and the outlet cooling water space 29 has stagnation and cannot be optimized. Therefore, as in the second embodiment, by providing a plurality of communication holes 23Ah, the flow of cooling water can be made more uniform and stagnation can be suppressed.

インバータ部品をトレー１３によりモジュール化してインバータモジュール９とした利点は、以下のとおりである。
（１）インバータモジュール９内の電子部品を含むインバータ部品の変更、交換が容易となる。このとき、ハウジング１の形状などの変更は不要であり、部品変更、交換のみの小変更で済み。コスト低下に寄与できる。
（２）回転電機構造におけるインバータに対するメンテナンス時に、ユニット単位（インバータモジュール９）での交換が可能となり、メンテナンス作業が容易となる。
（３）インバータモジュール９を単体のインバータとして利用することができる。この場合、一種類のインバータモジュール９を複数の機器に適用することもでき、利便性が向上する。 The advantage that the inverter component is modularized by the tray 13 to form the inverter module 9 is as follows.
(1) It is easy to change and replace inverter components including electronic components in the inverter module 9. At this time, it is not necessary to change the shape of the housing 1, and only a small change of replacement or replacement is required. It can contribute to cost reduction.
(2) At the time of maintenance on the inverter in the rotating electrical machine structure, replacement in units (inverter module 9) is possible, and maintenance work is facilitated.
(3) The inverter module 9 can be used as a single inverter. In this case, one type of inverter module 9 can be applied to a plurality of devices, and convenience is improved.

以上、本発明の実施形態について説明したが、これらの実施形態は本発明の理解を容易にするために記載された単なる例示に過ぎず、本発明は当該実施形態に限定されるものではない。本発明の技術的範囲は、上記実施形態で開示した具体的な技術事項に限らず、そこから容易に導きうる様々な変形、変更、代替技術なども含む。   As mentioned above, although embodiment of this invention was described, these embodiment is only the illustration described in order to make an understanding of this invention easy, and this invention is not limited to the said embodiment. The technical scope of the present invention is not limited to the specific technical matters disclosed in the above embodiment, but includes various modifications, changes, alternative techniques, and the like that can be easily derived therefrom.

例えば、第１の実施形態における図３に示す内管２３ｄの内側通路４９を、ハウジング冷却水通路３９に接続せずに冷却水導入通路４３に接続し、外管２５ｄの外側通路４７を冷却水導入配管４３に接続せずにハウジング冷却水通路３９に接続してもよい。   For example, the inner passage 49 of the inner pipe 23d shown in FIG. 3 in the first embodiment is connected to the cooling water introduction passage 43 without being connected to the housing cooling water passage 39, and the outer passage 47 of the outer pipe 25d is connected to the cooling water. The housing cooling water passage 39 may be connected without being connected to the introduction pipe 43.

この場合、冷却水ポンプから冷却水導入配管４５に送られる冷却水は、冷却水導入通路４３を経て、貫通孔３５、内管２３ｄの内側通路４９、出口冷却水空間２９、連通孔２３ｈ、入口冷却水空間２７、内管２３ｄと外管２５ｄとの間の外側通路４７、ハウジング冷却水通路３９の順に流れる。   In this case, the cooling water sent from the cooling water pump to the cooling water introduction pipe 45 passes through the cooling water introduction passage 43, passes through the through hole 35, the inner passage 49 of the inner pipe 23d, the outlet cooling water space 29, the communication hole 23h, the inlet It flows in the order of the cooling water space 27, the outer passage 47 between the inner tube 23d and the outer tube 25d, and the housing cooling water passage 39.

このように二重管構造部における冷却水の流れ方向を逆にして、貫通孔３５から内側通路４９に向けて流れる冷却水が、内管２３ｄと貫通孔３５との接続部から例え外側に漏れたとしても、漏れた冷却水は、外側通路４７に流出し、ハウジング１のインバータ部５内（冷却構造部２１の外側のインバータ部５内）への流出は抑制できる。   Thus, the flow direction of the cooling water in the double pipe structure is reversed, and the cooling water flowing from the through hole 35 toward the inner passage 49 leaks, for example, from the connecting portion between the inner pipe 23d and the through hole 35 to the outside. Even so, the leaked cooling water flows out into the outer passage 47 and can be prevented from flowing into the inverter section 5 of the housing 1 (inside the inverter section 5 outside the cooling structure section 21).

上記二重管構造部における冷却水の流れ方向を逆にする構造は、図５の第２の実施形態にも適用できる。この場合、内側通路４９から出口冷却水空間２９に流出した冷却水は、図５（ａ）の破線矢印とは逆に複数の連通孔２３Ａｈに向けて分散して流れる。さらに、複数の連通孔２３Ａｈから入口冷却水空間２７に流出した冷却水は、図５（ｂ）の破線矢印とは逆に外側通路４７に向けて流れる。   The structure in which the flow direction of the cooling water in the double pipe structure is reversed can also be applied to the second embodiment of FIG. In this case, the cooling water that has flowed out of the inner passage 49 into the outlet cooling water space 29 flows in a dispersed manner toward the plurality of communication holes 23Ah, contrary to the dashed arrows in FIG. Furthermore, the cooling water that has flowed out of the plurality of communication holes 23Ah into the inlet cooling water space 27 flows toward the outer passage 47, as opposed to the broken line arrows in FIG.

よって、冷却水の流れ方向を図５に示す第２の実施形態と逆にしても、第２の実施形態と同様に、入口冷却水空間２７及び出口冷却水空間２９内を流れる冷却水は、分散することになって流れの均一化を図ることができる。   Therefore, even if the flow direction of the cooling water is reversed from that of the second embodiment shown in FIG. 5, the cooling water flowing in the inlet cooling water space 27 and the outlet cooling water space 29 is the same as in the second embodiment. The flow can be dispersed and the flow can be made uniform.

また、第１の実施形態において、隔壁３１の配管接続部３３及び内壁板２３の連通孔２３ｈの位置は、図１、図３、図４に示す位置に限定されることはない。例えば、配管接続部３３を、平面視（図３、図４で上方から見て）で矩形状となる隔壁３１の角部付近に設け、連通孔２３ｈを配管接続部３３とは対角位置となる角部付近に設けてもよい。その際、内管２３ｄ及び外管２５ｄは、配管接続部３３の位置に合わせることになる。   Moreover, in 1st Embodiment, the position of the piping connection part 33 of the partition 31 and the communication hole 23h of the inner wall board 23 is not limited to the position shown in FIG.1, FIG.3, FIG.4. For example, the pipe connection portion 33 is provided in the vicinity of the corner of the partition wall 31 that is rectangular in plan view (viewed from above in FIGS. 3 and 4), and the communication hole 23 h is positioned diagonally to the pipe connection portion 33. It may be provided near the corner. At that time, the inner pipe 23d and the outer pipe 25d are adjusted to the position of the pipe connecting portion 33.

第２の実施形態においても、隔壁３１の配管接続部３３及び内壁板２３の複数の連通孔２３Ａｈの位置は、冷却水の流れが均一化するように設定されていればよく、実施形態の位置に限定されることはない。   Also in the second embodiment, the positions of the pipe connection portion 33 of the partition wall 31 and the plurality of communication holes 23Ah of the inner wall plate 23 may be set so that the flow of the cooling water is made uniform. It is not limited to.

また、電力変換装置としてインバータに限らず、例えば、ＤＣ−ＤＣコンバータにも本発明を適用でき、回転電機としてモータに限らず発電機にも本発明を適用できる。   Further, the present invention can be applied not only to an inverter as a power converter, but also to a DC-DC converter, for example, and the present invention can be applied to a generator as well as a motor as a rotating electrical machine.

１ ハウジング
３ モータ部（回転電機収容部）
５ インバータ部（電力変換装置収容部）
７ モータ（回転電機）
１３ トレー（取付部材）
１４ ベース板（取付部材）
１５ 平滑コンデンサ（電力変換装置）
１７ パワーモジュール（電力変換装置）
１９ ドライバ基板（電力変換装置）
２３ 内壁板（内壁部材、仕切壁、取付部材）
２３ｄ 内管（ハウジング冷却媒体通路との接続部）
２３ｈ 内壁板の連通孔（第１媒体通路と第２媒体通路とを連通する連通路）
２５ 外管（ハウジング冷却媒体通路との接続部）
２５ 外壁板（外壁部材、取付部材）
２７ 入口冷却水空間（第１媒体通路、冷却媒体通路）
２９ 出口冷却水空間（第２媒体通路、冷却媒体通路）
３９ ハウジング冷却水通路（ハウジング冷却媒体通路）
４１ 冷却水排出配管（冷却媒体の出口）
４５ 冷却水導入配管（冷却媒体の入口）
４７ 外側通路
４９ 内側通路 1 Housing 3 Motor part (Rotating electrical machine housing part)
5 Inverter part (power converter housing part)
7 Motor (Rotating electric machine)
13 Tray (Mounting member)
14 Base plate (mounting member)
15 Smoothing capacitor (power converter)
17 Power module (power converter)
19 Driver board (power converter)
23 inner wall plate (inner wall member, partition wall, mounting member)
23d Inner pipe (connection with housing cooling medium passage)
23h Inner wall plate communication hole (communication passage communicating first medium passage and second medium passage)
25 Outer pipe (connection with housing cooling medium passage)
25 Outer wall plate (outer wall member, mounting member)
27 Entrance cooling water space (first medium passage, cooling medium passage)
29 Outlet cooling water space (second medium passage, cooling medium passage)
39 Housing cooling water passage (housing cooling medium passage)
41 Cooling water discharge piping (cooling medium outlet)
45 Cooling water introduction pipe (cooling medium inlet)
47 Outer passage 49 Inner passage

Claims (4)

回転電機を収容する回転電機収容部及び、電力変換装置を収容する電力変換装置収容部を備えるハウジングと、
前記ハウジングの電力変換装置収容部に収容され、前記電力変換装置が取り付けられる取付部材と、
前記取付部材に設けられ、冷却媒体が流れることで前記電力変換装置を冷却する冷却媒体通路と、
前記ハウジングに設けられ、冷却媒体の入口及び出口を備えて前記冷却媒体通路に連通するハウジング冷却媒体通路と、を有し、
前記冷却媒体通路の前記ハウジング冷却媒体通路との接続部は、
前記冷却媒体の入口と出口とのいずれか一方に連通する外側通路と、
前記冷却媒体の入口と出口とのいずれか他方に連通し、前記外側通路の内側に位置する内側通路と、を備える二重管構造であることを特徴とする回転電機構造。 A rotating electrical machine housing portion that houses the rotating electrical machine, and a housing that includes a power conversion device housing portion that houses the power conversion device;
A mounting member that is housed in the power converter housing portion of the housing and to which the power converter is attached;
A cooling medium passage which is provided in the mounting member and cools the power conversion device by flowing the cooling medium;
A housing cooling medium passage provided in the housing and having an inlet and an outlet for the cooling medium and communicating with the cooling medium passage;
The connection portion of the cooling medium passage with the housing cooling medium passage is:
An outer passage communicating with either the inlet or the outlet of the cooling medium;
A rotating electrical machine structure comprising: a double pipe structure including an inner passage that communicates with either the inlet or the outlet of the cooling medium and is located inside the outer passage. 前記取付部材の冷却媒体通路は、
仕切壁を間に前記回転電機側に位置して、前記外側通路に連通する第１媒体通路と、
前記仕切壁を間に前記電力変換装置側に位置して、前記内側通路に連通する第２媒体通路と、
前記仕切壁に設けられ、前記第１媒体通路と前記第２媒体通路とを連通する連通路と、を有することを特徴とする請求項１に記載の回転電機構造。 The cooling medium passage of the mounting member is
A first medium passage that is located on the rotating electrical machine side between the partition walls and communicates with the outer passage;
A second medium passage that is located on the power conversion device side between the partition walls and communicates with the inner passage;
2. The rotating electrical machine structure according to claim 1, further comprising: a communication path that is provided in the partition wall and communicates the first medium path and the second medium path. 前記取付部材は、
前記電力変換装置が取り付けられるベース板と、
前記ベース板の前記回転電機収容部側に設けられて前記ベース板との間に前記第２媒体通路を形成し、前記連通路を備える内壁部材と、
前記内壁部材の前記ベース板と反対側に設けられて前記内壁部材との間に前記第１媒体通路を形成する外壁部材と、を有することを特徴とする請求項２に記載の回転電機構造。 The mounting member is
A base plate to which the power converter is attached;
An inner wall member provided on the rotating electrical machine housing portion side of the base plate to form the second medium passage between the base plate and the communication passage;
3. The rotating electrical machine structure according to claim 2, further comprising: an outer wall member that is provided on a side opposite to the base plate of the inner wall member and that forms the first medium passage between the inner wall member and the inner wall member. 前記連通路は、複数設けられていることを特徴とする請求項２または３に記載の回転電機構造。   The rotating electrical machine structure according to claim 2 or 3, wherein a plurality of the communication paths are provided.
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