WO2020032132A1 - Power conversion device - Google Patents

Power conversion device Download PDF

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Publication number
WO2020032132A1
WO2020032132A1 PCT/JP2019/031217 JP2019031217W WO2020032132A1 WO 2020032132 A1 WO2020032132 A1 WO 2020032132A1 JP 2019031217 W JP2019031217 W JP 2019031217W WO 2020032132 A1 WO2020032132 A1 WO 2020032132A1
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WO
WIPO (PCT)
Prior art keywords
fastening portion
capacitor
fastening
capacitor module
power converter
Prior art date
Application number
PCT/JP2019/031217
Other languages
French (fr)
Japanese (ja)
Inventor
雅也 殿本
哲矢 松岡
弘洋 一条
Original Assignee
株式会社デンソー
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2019129723A external-priority patent/JP7036092B2/en
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Priority to CN201980053962.4A priority Critical patent/CN112585859B/en
Publication of WO2020032132A1 publication Critical patent/WO2020032132A1/en
Priority to US17/170,978 priority patent/US11563384B2/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
    • H01G2/02—Mountings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Definitions

  • the present disclosure relates to a power conversion device.
  • Patent Document 1 discloses a capacitor module in which a capacitor element is housed and electronic components such as a bus bar and a discharge resistor are attached. When such a capacitor module is used in a power conversion device, it is usually used by being fixed in a case together with other electronic components constituting a power conversion circuit.
  • the capacitor module disclosed in Patent Document 1 includes heat-generating electronic components such as a capacitor element, a bus bar, and a discharge resistor.
  • heat-generating electronic components such as a capacitor element, a bus bar, and a discharge resistor.
  • only one fixing portion for fixing to the case is provided at an end of the capacitor module. Therefore, heat is not sufficiently drawn from the capacitor module to the case, so that the heat dissipation of the capacitor module is poor. As a result, the temperature of the capacitor element may be excessively increased with use.
  • the present disclosure seeks to provide a power conversion device including a capacitor module with improved heat dissipation.
  • One embodiment of the present disclosure includes a plurality of electronic components forming a power conversion circuit, A capacitor module including a capacitor element included in the plurality of electronic components, An apparatus case accommodating the plurality of electronic components and the capacitor module, With The capacitor module is fixed to the device case by a plurality of fastening portions including a first fastening portion and a second fastening portion erected on the inner bottom surface of the device case, At least one of the plurality of electronic components other than the capacitor element is attached to the capacitor module and has a direction orthogonal to a direction in which the first fastening portion and the second fastening portion are arranged.
  • the power converter is located between the first fastening portion and the second fastening portion as viewed from a direction parallel to the inner bottom surface of the device case.
  • the electronic component mounted on the capacitor module is located between the first fastening portion and the second fastening portion for fixing the capacitor module to the device case.
  • the heat generated in the electronic component is easily transmitted to the device case via the first fastening portion and the second fastening portion, and the heat dissipation can be improved.
  • FIG. 1 is a conceptual top view of a power conversion device according to the first embodiment.
  • FIG. 2 is a perspective conceptual view of the power converter according to the first embodiment.
  • FIG. 3 is a conceptual perspective view of the capacitor module according to the first embodiment.
  • FIG. 4 is a partially enlarged cross-sectional view taken along the line IV-IV in FIG.
  • FIG. 5 is a partially enlarged cross-sectional view taken along the line VV in FIG.
  • FIG. 6 is a partially enlarged cross-sectional view taken along the line VI-VI in FIG.
  • FIG. 7 is a partially enlarged cross-sectional view corresponding to the position taken along line IV-IV of FIG.
  • FIG. 8 is a partially enlarged cross-sectional view corresponding to the position taken along line IV-IV of FIG.
  • FIG. 9 is a schematic perspective view of a power conversion device according to Modification 3.
  • FIG. 10 is a partially enlarged cross-sectional view corresponding to the position taken along line IV-IV of FIG.
  • the power conversion device 1 of the present embodiment includes a plurality of electronic components 10, a capacitor case 20, a capacitor module 2, and a device case 30.
  • the plurality of electronic components 10 constitute a power conversion circuit.
  • the capacitor module 2 includes a capacitor element 11 included in a plurality of electronic components 10.
  • the device case 30 houses the plurality of electronic components 10 and the capacitor module 2.
  • the capacitor module 2 is fixed to the device case 30 by a plurality of fastening portions 40 including a first fastening portion 41 and a second fastening portion 42 erected on the inner bottom surface 31 of the device case 30. At least one of the plurality of electronic components 10 other than the capacitor element 11 is attached to the capacitor module 2 and is orthogonal to the direction in which the first fastening portion 41 and the second fastening portion 42 are arranged. And is located between the first fastening portion 41 and the second fastening portion 42 when viewed from a direction parallel to the inner bottom surface 31.
  • the plurality of electronic components 10 shown in FIG. 1 constitute a power conversion circuit such as an inverter and a converter.
  • the plurality of electronic components 10 include, in addition to the capacitor element 11, a discharge resistor 12, a discharge circuit 13, a capacitor P bus bar 14, a capacitor N bus bar 15, a semiconductor module 16, and a terminal block 17 as other electronic components.
  • the direction in which the capacitor elements 11 are arranged is defined as the X direction
  • the direction in which the opening surface 23 of the capacitor case 20 described later and the opposite surface are defined as the thickness direction Y
  • the X direction and the Y direction are defined. Is defined as a height direction Z.
  • the capacitor case 20 is made of resin and has a substantially rectangular parallelepiped shape as a whole. And it has a long shape in the direction in which the capacitor elements 11 are arranged, that is, in the X direction.
  • the capacitor case 20 has an opening surface 23 formed on one side surface, and the potting surface of the sealing resin 22 potted on the capacitor case 20 is exposed from the opening surface 23 to form the side surface 21 of the capacitor module 2.
  • a discharge resistor 12, a discharge circuit 13, a capacitor P bus bar 14, and a capacitor N bus bar 15 as other electronic components are attached to the side surface 21.
  • the discharge circuit 13 includes the entire circuit including a switch (not shown) and the like.
  • the capacitor module 2 has a substantially rectangular parallelepiped shape.
  • the present invention is not limited to this.
  • the capacitor module 2 may have another shape such as a trapezoidal three-dimensional shape in a side view. Good.
  • the capacitor case 20 has a concave portion 24 formed in a concave shape on a surface opposite to the opening surface 23, and a first fastening portion 41 located in the concave portion 24 and fastened to the first fastening portion 41. And a fastened portion 25.
  • the recess 24 is located between the two capacitor elements 11.
  • the first fastened portion 25 is formed of a through hole and fastened to the first fastened portion 41 via a screw 51.
  • the recess 24 is formed to extend in the height direction Z.
  • the first engaged portion 25 is formed in a plate shape so as to partition the inside of the concave portion 24 in the height direction Z, and the concave portion 24 has a fastening portion arrangement portion that sandwiches the first engaged portion 25 in the height direction Z.
  • 241 and a screw mounting portion 242 are formed.
  • the fastening part arrangement part 241 is a space area where the first fastening part 41 is arranged.
  • the screw attachment part 242 is a space area for inserting a fastening screw. Then, as shown in FIG. 6, the thickness W1 of the screw attachment portion 242 is larger than the thickness W1 of the fastening portion arrangement portion 241.
  • a third fastened portion 27 to be fastened via the second member is provided.
  • Each of the second fastened portion 26 and the third fastened portion 27 is formed in a rib shape, and has a through hole through which screws 52 and 53 are inserted, respectively.
  • the fastening portions 41 to 43 are provided upright on the inner bottom surface 31 of the device case 30.
  • the height H1 of the first fastening portion 41 located in the recess 24 of the capacitor module 2 is the highest in the height direction Z of each of the fastening portions 41 to 43, and the height of the second fastening portion 42 is the highest.
  • Both the height H2 and the height H3 of the third fastening portion 43 are lower than H1.
  • H2 and H3 have the same height.
  • H1 is higher than the height H0 at the center position C in the height direction Z of the capacitor module 2, and H2 and H3 are lower than H0.
  • the height of H1 to H3 is not particularly limited, but may be, for example, 30 mm to 50 mm.
  • the device case 30 is made of metal, but may be made of resin instead.
  • the first fastening portion 41 is formed integrally with the device case 30 and is made of metal, and is solid except for a portion into which the screw 51 is inserted. I have.
  • the second fastening portion 42 and the third fastening portion 43 are also formed integrally with the device case 30 and made of metal, and are solid except for the portions into which the screws 52 and 53 are inserted. It has become.
  • the discharge resistor 12 and the discharge circuit 13 are disposed on the inner bottom surface 31 of the device case 30 in a direction orthogonal to the direction in which the first fastening portion 41 and the second fastening portion 42 are arranged.
  • it When viewed from a parallel direction, it has an extending portion 121 extending closer to the first fastening portion 41 than the capacitor element 11.
  • the extending portion 121 overlaps the first fastening portion 41 when viewed from the above direction. Further, the extending portion 121 protrudes in the height direction Z.
  • the first fastening portion 41 is located at a position closest to the discharge resistor 12 and the discharge circuit 13 as the electronic component 10 among the plurality of fastening portions 40.
  • a capacitor P bus bar 14 and a capacitor N bus bar 15 are attached to the side surface 21 of the capacitor module 2.
  • the capacitor P bus bar 14 is connected to the positive electrode surface of the capacitor element 11 (not shown) in the sealing resin 22.
  • the capacitor N bus bar 15 is connected to the negative electrode surface of the capacitor element 11 (not shown) in the sealing resin 22.
  • the two capacitor elements 11 are connected in parallel by the capacitor P bus bar 14 and the capacitor N bus bar 15.
  • the capacitor P bus bar 14 and the capacitor N bus bar 15 protrude from the side surface 21 formed by the sealing resin 22 in a state where they are opposed to each other in the Z direction.
  • the capacitor P bus bar 14 and the capacitor N bus bar 15 have a plurality of connection terminals 141 and 151 connected to the input terminals of the semiconductor module 16 on the protruding end side.
  • the output terminal of the semiconductor module 16 is connected to the terminal block 17 via the output bus bar 171.
  • the electronic component 10 attached to the capacitor module 2 includes the first fastening portion 41 and the second fastening portion 42 for fixing the capacitor module 2 to the device case 30. It is located between. Thereby, the heat generated in the electronic component 10 is easily transmitted to the device case 30 via the first fastening portion 41 and the second fastening portion 42, and the heat dissipation can be improved.
  • the first fastening portion 41 located closest to the discharge resistor 12 and the discharge circuit 13, which are the electronic components 10 attached to the capacitor module 2.
  • the height H1 from the inner bottom surface 31 is the highest among the plurality of fastening portions 40.
  • heat generated from the electronic component 10 attached to the capacitor module 2 can be positively released to the outside through the first fastening portion 41, so that heat radiation can be further improved.
  • another fastening portion 40 instead of the first fastening portion 41 is located at a position closest to the electronic component 10 attached to the capacitor module 2 among the plurality of fastening portions 40, and the inner bottom surface 31 May be the highest among the plurality of fastening portions 40. In this case, the same operation and effect can be obtained.
  • the capacitor element 11 is housed in the capacitor case 20.
  • the capacitor case 20 has an opening surface 23 formed on one surface of the capacitor case 20, and a surface opposite to the opening surface 23.
  • a concave portion 24 formed in a concave shape is formed in the concave portion 24.
  • the thickness W2 of the screw attachment portion 242 is larger than the thickness W1 of the fastening portion arrangement portion 241. Accordingly, the volume of the capacitor case 20 can be maintained large while providing the concave portion 24, so that heat conduction from the electronic component 10, which is a heating element, to the first fastening portion 25 is improved, so that heat dissipation is improved. Can be enhanced.
  • the discharge resistor 12 which is the electronic component 10 attached to the capacitor module 2 is in a direction orthogonal to the direction in which the first fastening portion 41 and the second fastening portion 42 are arranged and has an inner bottom surface.
  • the discharge resistor 12 is more easily released, and the heat dissipation is improved.
  • the extending portion 121 protrudes in the height direction Z of the fastening portions 41 to 43. Thereby, the heat dissipation can be further improved.
  • the electronic component 10 attached to the capacitor module 2 forms the discharge resistor 12 and the discharge circuit 13. This can promote the release of heat from the discharge resistor 12 and the discharge circuit 13 that generate a relatively large amount of heat in the electronic component 10, thereby contributing to an improvement in heat dissipation.
  • the power conversion device 1 including the capacitor module 2 having improved heat dissipation.
  • the height H1 of the first fastening portion 41 is made higher than the height H0 of the center position C in the height direction Z of the capacitor module 2, and the second fastening portion 42
  • the height H2 of the third fastening portion 43 and the height H3 of the third fastening portion 43 are set lower than H0.
  • the height H1 to H3 may be set higher than H0 as in Modification 1 shown in FIG. Good.
  • the first fastened portion 25 is provided at one end in the X direction of the capacitor module 2
  • the second fastened portion 26 is provided at the other end in the X direction.
  • the first fastening portion 41 is fastened to the first fastened portion 25, and the second fastening portion 42 is fastened to the second fastened portion 26. Good.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Also in the first and second modifications, the same operation and effect as those of the first embodiment can be obtained.
  • a discharge resistor 12, a discharge circuit 13, a capacitor P bus bar 14, and a capacitor N bus bar 15 as other electronic components 10 other than the capacitor element 11 are provided.
  • the electronic component is mounted on the side surface 21 which is the potting surface of the capacitor module 2
  • other electronic components may be mounted on the side surface of the capacitor module 2 other than the side surface 21.
  • the discharge resistor 12 and the discharge circuit 13 which are electronic components other than the capacitor element 11 included in the plurality of electronic components 10 are respectively arranged in the height direction of the capacitor module 2. It may be provided on the upper surface 28 of Z.
  • the discharge resistor 12 and the discharge circuit 13 have the extending portion 122 extended so as to be closer to the first fastening portion 41.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
  • the discharge resistor 12 and the discharge circuit 13 are arranged in a direction orthogonal to the direction in which the first fastening portion 41 and the second fastening portion 42 are arranged and on the inner bottom surface 31. It is located between the first fastening portion 41 and the second fastening portion 42 when viewed from a parallel direction, and also has the same operation and effect as in the first embodiment in the third modification.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Inverter Devices (AREA)

Abstract

The present invention provides a power conversion device comprising a capacitor module for which heat dissipation is improved. This power conversion device (1) has a plurality of electronic components (10) that configure a power conversion circuit, a capacitor module (2), and a device case (30). The capacitor module (2) includes a capacitor element (11), and is fixed to the device case (30) by a plurality of fastening parts (40) including a first fastening part (41) and a second fastening part (42) erected on an inside bottom surface (31) of the device case (30). Also, at least one of the electronic components (10) other than the capacitor element (11) is attached to the capacitor module (2), and is placed between the first fastening part (41) and the second fastening part (42) seen from the direction parallel to the inside bottom surface (31) which is a direction orthogonal to the alignment direction of the first fastening part (41) and the second fastening part (42).

Description

電力変換装置Power converter 関連出願の相互参照Cross-reference of related applications
　本出願は２０１８年８月１０日に出願された日本出願番号２０１８－１５１６４５号、及び２０１９年７月１２日に出願された日本出願番号２０１９－１２９７２３号に基づくもので、ここにその記載内容を援用する。 This application is based on Japanese Patent Application No. 2018-151645 filed on August 10, 2018 and Japanese Application No. 2019-129723 filed on July 12, 2019, the contents of which are hereby incorporated by reference. Invite.
　本開示は、電力変換装置に関する。 The present disclosure relates to a power conversion device.
　電力変換回路を構成する複数の電子部品を有する電力変換装置が様々な用途に用いられている。電力変換装置に使用される電子部品として、特許文献１には、コンデンサ素子が収納されるとともにバスバや放電抵抗などの電子部品が取り付けられたコンデンサモジュールが開示されている。かかるコンデンサモジュールを電力変換装置に使用する場合には、通常、電力変換回路を構成する他の電子部品とともにケース内に固定されて使用される。 (2) A power conversion device having a plurality of electronic components constituting a power conversion circuit is used for various purposes. As an electronic component used in a power converter, Patent Document 1 discloses a capacitor module in which a capacitor element is housed and electronic components such as a bus bar and a discharge resistor are attached. When such a capacitor module is used in a power conversion device, it is usually used by being fixed in a case together with other electronic components constituting a power conversion circuit.
特開２０１４－２０７４２７号公報JP 2014-207427 A
　特許文献１に開示のコンデンサモジュールは、コンデンサ素子、バスバ、放電抵抗などの発熱性の電子部品を備える。しかしながら、特許文献１に開示のコンデンサモジュールは、ケースに固定するための固定部がコンデンサモジュールの端部に一つ設けられているに過ぎない。そのため、コンデンサモジュールからケースへの熱引きが十分に行われないことから、コンデンサモジュールの放熱性が悪い。その結果、使用に伴ってコンデンサ素子の温度が過度に上昇する恐れがある。 The capacitor module disclosed in Patent Document 1 includes heat-generating electronic components such as a capacitor element, a bus bar, and a discharge resistor. However, in the capacitor module disclosed in Patent Document 1, only one fixing portion for fixing to the case is provided at an end of the capacitor module. Therefore, heat is not sufficiently drawn from the capacitor module to the case, so that the heat dissipation of the capacitor module is poor. As a result, the temperature of the capacitor element may be excessively increased with use.
　本開示は、放熱性が向上されるコンデンサモジュールを備える電力変換装置を提供しようとするものである。 The present disclosure seeks to provide a power conversion device including a capacitor module with improved heat dissipation.
　本開示の一態様は、電力変換回路を構成する複数の電子部品と、
　上記複数の電子部品に含まれるコンデンサ素子を含むコンデンサモジュールと、
　上記複数の電子部品及び上記コンデンサモジュールを収容する装置ケースと、
　を備え、
　上記コンデンサモジュールは、上記装置ケースの内側底面立設された第１の締結部と第２の締結部とを含む複数の締結部によって上記装置ケースに固定されており、
　上記複数の電子部品のうち上記コンデンサ素子以外の少なくとも一つは、上記コンデンサモジュールに取り付けられているとともに、上記第１の締結部と上記第２の締結部との並び方向に直交する方向であって上記装置ケースの上記内側底面に平行な方向から見て上記第１の締結部と上記第２の締結部との間に位置している、電力変換装置にある。 One embodiment of the present disclosure includes a plurality of electronic components forming a power conversion circuit,
A capacitor module including a capacitor element included in the plurality of electronic components,
An apparatus case accommodating the plurality of electronic components and the capacitor module,
With
The capacitor module is fixed to the device case by a plurality of fastening portions including a first fastening portion and a second fastening portion erected on the inner bottom surface of the device case,
At least one of the plurality of electronic components other than the capacitor element is attached to the capacitor module and has a direction orthogonal to a direction in which the first fastening portion and the second fastening portion are arranged. The power converter is located between the first fastening portion and the second fastening portion as viewed from a direction parallel to the inner bottom surface of the device case.
　上記電力変換装置においては、コンデンサモジュールに取り付けられた電子部品は、コンデンサモジュールを装置ケースに固定するための第１の締結部と第２の締結部との間に位置している。これにより、当該電子部品に生じた熱が第１の締結部及び第２の締結部を介して装置ケースに伝播されやすくなっており、放熱性を向上することができる。 In the above power converter, the electronic component mounted on the capacitor module is located between the first fastening portion and the second fastening portion for fixing the capacitor module to the device case. Thereby, the heat generated in the electronic component is easily transmitted to the device case via the first fastening portion and the second fastening portion, and the heat dissipation can be improved.
　以上のごとく、本開示によれば、放熱性が向上されるコンデンサモジュールを備える電力変換装置を提供することができる。 As described above, according to the present disclosure, it is possible to provide a power converter including a capacitor module with improved heat dissipation.
　なお、特許請求の範囲に記載した括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示すものであり、本開示の技術的範囲を限定するものではない。 符号 Incidentally, reference numerals in parentheses described in the claims indicate a correspondence with specific means described in the embodiments described later, and do not limit the technical scope of the present disclosure.
　本開示についての上記目的及びその他の目的、特徴や利点は、添付の図面を参照しながら下記の詳細な記述により、より明確になる。その図面は、
図１は、実施形態１における、電力変換装置の上面概念図であり、 図２は、実施形態１における、電力変換装置の斜視概念図であり、 図３は、実施形態１における、コンデンサモジュールの斜視概念図であり、 図４は、図１における、IV-IV線位置断面一部拡大図であり、 図５は、図４における、V-V線位置断面一部拡大図であり、 図６は、図５における、VI-VI線位置断面一部拡大図であり、 図７は、変形形態１における図１のIV-IV線位置相当の断面一部拡大図であり、 図８は、変形形態２における図１のIV-IV線位置相当の断面一部拡大図であり、 図９は、変形形態３における、電力変換装置の斜視概念図であり、 図１０は、変形形態３における図１のIV-IV線位置相当の断面一部拡大図である。 The above and other objects, features, and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. The drawing is
FIG. 1 is a conceptual top view of a power conversion device according to the first embodiment. FIG. 2 is a perspective conceptual view of the power converter according to the first embodiment. FIG. 3 is a conceptual perspective view of the capacitor module according to the first embodiment. FIG. 4 is a partially enlarged cross-sectional view taken along the line IV-IV in FIG. FIG. 5 is a partially enlarged cross-sectional view taken along the line VV in FIG. FIG. 6 is a partially enlarged cross-sectional view taken along the line VI-VI in FIG. FIG. 7 is a partially enlarged cross-sectional view corresponding to the position taken along line IV-IV of FIG. FIG. 8 is a partially enlarged cross-sectional view corresponding to the position taken along line IV-IV of FIG. FIG. 9 is a schematic perspective view of a power conversion device according to Modification 3. FIG. 10 is a partially enlarged cross-sectional view corresponding to the position taken along line IV-IV of FIG.
（実施形態１）
　上記電力変換装置の実施形態について、図１～図６を用いて説明する。
　図１に示すように、本実施形態の電力変換装置１は、複数の電子部品１０、コンデンサケース２０、コンデンサモジュール２、装置ケース３０を有する。
　複数の電子部品１０は、電力変換回路を構成している。
　コンデンサモジュール２、複数の電子部品１０に含まれるコンデンサ素子１１を含む。
　装置ケース３０は複数の電子部品１０とコンデンサモジュール２とを収容する。 (Embodiment 1)
An embodiment of the power converter will be described with reference to FIGS.
As shown in FIG. 1, the power conversion device 1 of the present embodiment includes a plurality of electronic components 10, a capacitor case 20, a capacitor module 2, and a device case 30.
The plurality of electronic components 10 constitute a power conversion circuit.
The capacitor module 2 includes a capacitor element 11 included in a plurality of electronic components 10.
The device case 30 houses the plurality of electronic components 10 and the capacitor module 2.
　コンデンサモジュール２は、装置ケース３０の内側底面３１に立設された第１の締結部４１と第２の締結部４２とを含む複数の締結部４０によって装置ケース３０に固定されている。
　そして、複数の電子部品１０のうちコンデンサ素子１１以外の少なくとも一つは、コンデンサモジュール２に取り付けられているとともに、第１の締結部４１と第２の締結部４２との並び方向に直交する方向であって内側底面３１に平行な方向から見て第１の締結部４１と第２の締結部４２との間に位置している。 The capacitor module 2 is fixed to the device case 30 by a plurality of fastening portions 40 including a first fastening portion 41 and a second fastening portion 42 erected on the inner bottom surface 31 of the device case 30.
At least one of the plurality of electronic components 10 other than the capacitor element 11 is attached to the capacitor module 2 and is orthogonal to the direction in which the first fastening portion 41 and the second fastening portion 42 are arranged. And is located between the first fastening portion 41 and the second fastening portion 42 when viewed from a direction parallel to the inner bottom surface 31.
　以下、本実施形態の電力変換装置１について、詳述する。
　図１に示す複数の電子部品１０は、インバータ、コンバータ等の電力変換回路を構成している。複数の電子部品１０は、コンデンサ素子１１のほかに、他の電子部品としての放電抵抗１２、放電回路１３、コンデンサＰバスバ１４、コンデンサＮバスバ１５、半導体モジュール１６、端子台１７を含む。なお、本実施形態では、コンデンサ素子１１の並び方向をＸ方向とし、後述するコンデンサケース２０の開口面２３とその反対側の面との対向方向を厚さ方向Ｙとし、Ｘ方向とＹ方向とに直交する方向を高さ方向Ｚとする。 Hereinafter, the power converter 1 of the present embodiment will be described in detail.
The plurality of electronic components 10 shown in FIG. 1 constitute a power conversion circuit such as an inverter and a converter. The plurality of electronic components 10 include, in addition to the capacitor element 11, a discharge resistor 12, a discharge circuit 13, a capacitor P bus bar 14, a capacitor N bus bar 15, a semiconductor module 16, and a terminal block 17 as other electronic components. In the present embodiment, the direction in which the capacitor elements 11 are arranged is defined as the X direction, the direction in which the opening surface 23 of the capacitor case 20 described later and the opposite surface are defined as the thickness direction Y, and the X direction and the Y direction are defined. Is defined as a height direction Z.
　図５に示すように、本実施形態では、コンデンサ素子１１は２個備えられ、コンデンサケース２０に収納されており、封止樹脂２２に封止されてコンデンサモジュール２を形成している。本実施形態では、コンデンサケース２０は樹脂製であって、全体形状として略直方体形状を有する。そして、コンデンサ素子１１の並び方向、すなわち、Ｘ方向に長尺な形状を有する。コンデンサケース２０は、一方の側面に開口形成された開口面２３を有し、開口面２３からコンデンサケース２０にポッティングされた封止樹脂２２のポッティング面が露出してコンデンサモジュール２の側面２１が形成されている。そして、側面２１に、他の電子部品としての放電抵抗１２、放電回路１３、コンデンサＰバスバ１４、コンデンサＮバスバ１５が取り付けられている。なお、放電回路１３は、図示しないスイッチ等を含む回路全体を含む。なお、本実施形態では図３に示すようにコンデンサモジュール２は略直方体形状であるが、これに限らず、コンデンサモジュール２は例えば側面視形状が台形の立体形状など、他の形状であってもよい。 As shown in FIG. 5, in this embodiment, two capacitor elements 11 are provided, housed in the capacitor case 20, and sealed with the sealing resin 22 to form the capacitor module 2. In the present embodiment, the capacitor case 20 is made of resin and has a substantially rectangular parallelepiped shape as a whole. And it has a long shape in the direction in which the capacitor elements 11 are arranged, that is, in the X direction. The capacitor case 20 has an opening surface 23 formed on one side surface, and the potting surface of the sealing resin 22 potted on the capacitor case 20 is exposed from the opening surface 23 to form the side surface 21 of the capacitor module 2. Have been. A discharge resistor 12, a discharge circuit 13, a capacitor P bus bar 14, and a capacitor N bus bar 15 as other electronic components are attached to the side surface 21. Note that the discharge circuit 13 includes the entire circuit including a switch (not shown) and the like. In this embodiment, as shown in FIG. 3, the capacitor module 2 has a substantially rectangular parallelepiped shape. However, the present invention is not limited to this. For example, the capacitor module 2 may have another shape such as a trapezoidal three-dimensional shape in a side view. Good.
　図５に示すように、コンデンサケース２０は、開口面２３と反対側の面に凹状に形成された凹部２４と、凹部２４内に位置して第１の締結部４１に締結される第１の被締結部２５とを有する。凹部２４は、２個のコンデンサ素子１１の間に位置している。また、第１の被締結部２５は貫通孔からなりネジ５１を介して第１の締結部４１と締結される。 As shown in FIG. 5, the capacitor case 20 has a concave portion 24 formed in a concave shape on a surface opposite to the opening surface 23, and a first fastening portion 41 located in the concave portion 24 and fastened to the first fastening portion 41. And a fastened portion 25. The recess 24 is located between the two capacitor elements 11. The first fastened portion 25 is formed of a through hole and fastened to the first fastened portion 41 via a screw 51.
　本実施形態では、図６に示すように、凹部２４は高さ方向Ｚに伸びるように形成されている。第１の被締結部２５は凹部２４内を高さ方向Ｚに仕切るように板状に形成されており、凹部２４には第１の被締結部２５を高さ方向Ｚに挟む締結部配置部２４１とネジ取り付け部２４２とが形成されている。締結部配置部２４１は第１の締結部４１が配置される空間領域となっている。ネジ取り付け部２４２は締結用のネジを挿入するための空間領域となっている。そして、図６に示すようにネジ取り付け部２４２の肉厚Ｗ１は、締結部配置部２４１の肉厚Ｗ１よりも厚くなっている。 In the present embodiment, as shown in FIG. 6, the recess 24 is formed to extend in the height direction Z. The first engaged portion 25 is formed in a plate shape so as to partition the inside of the concave portion 24 in the height direction Z, and the concave portion 24 has a fastening portion arrangement portion that sandwiches the first engaged portion 25 in the height direction Z. 241 and a screw mounting portion 242 are formed. The fastening part arrangement part 241 is a space area where the first fastening part 41 is arranged. The screw attachment part 242 is a space area for inserting a fastening screw. Then, as shown in FIG. 6, the thickness W1 of the screw attachment portion 242 is larger than the thickness W1 of the fastening portion arrangement portion 241.
　図４に示すように、コンデンサケース２０の左右端部には、第２の締結部４２にネジ５２を介して締結される第２の被締結部２６と、第３の締結部４３にネジ５３を介して締結される第３の被締結部２７が設けられている。第２の被締結部２６及び第３の被締結部２７は、いずれもリブ状に形成され、それぞれネジ５２、５３が挿通される貫通孔を有している。 As shown in FIG. 4, at the left and right ends of the capacitor case 20, a second fastened portion 26 to be fastened to the second fastening portion 42 via the screw 52, and a screw 53 to the third fastening portion 43. A third fastened portion 27 to be fastened via the second member is provided. Each of the second fastened portion 26 and the third fastened portion 27 is formed in a rib shape, and has a through hole through which screws 52 and 53 are inserted, respectively.
　図４に示すように、装置ケース３０の内側底面３１に各締結部４１～４３が立設されている。そして、各締結部４１～４３の高さ方向Ｚにおける高さは、コンデンサモジュール２の凹部２４内に位置する第１の締結部４１の高さＨ１が最も高く、第２の締結部４２の高さＨ２と第３の締結部４３の高さＨ３はいずれもＨ１よりも低くなっている。本実施形態では、Ｈ２とＨ３とは同じ高さとなっている。そして、Ｈ１はコンデンサモジュール２の高さ方向Ｚの中央位置Ｃの高さＨ０よりも高くなっており、Ｈ２とＨ３とはＨ０よりも低くなっている。Ｈ１～Ｈ３の高さは特に限定されないが、例えば、３０ｍｍ～５０ｍｍとすることができる。なお、本実施形態では、装置ケース３０は金属製であるが、これに替えて樹脂製であってもよい。 締結 As shown in FIG. 4, the fastening portions 41 to 43 are provided upright on the inner bottom surface 31 of the device case 30. The height H1 of the first fastening portion 41 located in the recess 24 of the capacitor module 2 is the highest in the height direction Z of each of the fastening portions 41 to 43, and the height of the second fastening portion 42 is the highest. Both the height H2 and the height H3 of the third fastening portion 43 are lower than H1. In the present embodiment, H2 and H3 have the same height. H1 is higher than the height H0 at the center position C in the height direction Z of the capacitor module 2, and H2 and H3 are lower than H0. The height of H1 to H3 is not particularly limited, but may be, for example, 30 mm to 50 mm. In the present embodiment, the device case 30 is made of metal, but may be made of resin instead.
　本実施形態では、図６に示すように、第１の締結部４１は装置ケース３０と一体に形成されて金属製となっており、ネジ５１が挿入される部分を除いて中実となっている。なお、図示しないが、第２の締結部４２及び第３の締結部４３も装置ケース３０と一体に形成されて金属製となっており、ネジ５２、５３が挿入される部分を除いて中実となっている。 In the present embodiment, as shown in FIG. 6, the first fastening portion 41 is formed integrally with the device case 30 and is made of metal, and is solid except for a portion into which the screw 51 is inserted. I have. Although not shown, the second fastening portion 42 and the third fastening portion 43 are also formed integrally with the device case 30 and made of metal, and are solid except for the portions into which the screws 52 and 53 are inserted. It has become.
　また、図４に示すように、放電抵抗１２及び放電回路１３は、第１の締結部４１と第２の締結部４２との並び方向に直交する方向であって装置ケース３０の内側底面３１に平行な方向から見て、コンデンサ素子１１よりも第１の締結部４１に近くなるように延設された延設部１２１を有する。本実施形態では、延設部１２１は上記方向から見て第１の締結部４１と重なっている。また、延設部１２１は高さ方向Ｚに突出している。そして、第１の締結部４１は、複数の締結部４０のうち、電子部品１０である放電抵抗１２及び放電回路１３に最も近い位置に位置している。 As shown in FIG. 4, the discharge resistor 12 and the discharge circuit 13 are disposed on the inner bottom surface 31 of the device case 30 in a direction orthogonal to the direction in which the first fastening portion 41 and the second fastening portion 42 are arranged. When viewed from a parallel direction, it has an extending portion 121 extending closer to the first fastening portion 41 than the capacitor element 11. In the present embodiment, the extending portion 121 overlaps the first fastening portion 41 when viewed from the above direction. Further, the extending portion 121 protrudes in the height direction Z. The first fastening portion 41 is located at a position closest to the discharge resistor 12 and the discharge circuit 13 as the electronic component 10 among the plurality of fastening portions 40.
　図１に示すように、コンデンサモジュール２の側面２１にはコンデンサＰバスバ１４、コンデンサＮバスバ１５が取り付けられている。コンデンサＰバスバ１４は、封止樹脂２２内で、図示しないコンデンサ素子１１の正極電極面に接続されている。同様に、コンデンサＮバスバ１５は、封止樹脂２２内で、図示しないコンデンサ素子１１の負極電極面に接続されている。これにより、２個のコンデンサ素子１１は、コンデンサＰバスバ１４とコンデンサＮバスバ１５によって互いに並列接続された状態にある。 コ ン デ ン サ As shown in FIG. 1, a capacitor P bus bar 14 and a capacitor N bus bar 15 are attached to the side surface 21 of the capacitor module 2. The capacitor P bus bar 14 is connected to the positive electrode surface of the capacitor element 11 (not shown) in the sealing resin 22. Similarly, the capacitor N bus bar 15 is connected to the negative electrode surface of the capacitor element 11 (not shown) in the sealing resin 22. As a result, the two capacitor elements 11 are connected in parallel by the capacitor P bus bar 14 and the capacitor N bus bar 15.
　図２に示すように、コンデンサＰバスバ１４、コンデンサＮバスバ１５は、互いにＺ方向に対向配置された状態で、封止樹脂２２により形成された側面２１から突出している。コンデンサＰバスバ１４、コンデンサＮバスバ１５は突出端側に、半導体モジュール１６の入力端子に接続される複数の接続端子１４１、１５１を備えている。なお、半導体モジュール１６の出力端子は出力バスバ１７１を介して端子台１７に接続されている。 (2) As shown in FIG. 2, the capacitor P bus bar 14 and the capacitor N bus bar 15 protrude from the side surface 21 formed by the sealing resin 22 in a state where they are opposed to each other in the Z direction. The capacitor P bus bar 14 and the capacitor N bus bar 15 have a plurality of connection terminals 141 and 151 connected to the input terminals of the semiconductor module 16 on the protruding end side. The output terminal of the semiconductor module 16 is connected to the terminal block 17 via the output bus bar 171.
　次に、本実施形態の電力変換装置１における作用効果について、詳述する。
　本実施形態の電力変換装置１によれば、コンデンサモジュール２に取り付けられた電子部品１０は、コンデンサモジュール２を装置ケース３０に固定するための第１の締結部４１と第２の締結部４２との間に位置している。これにより、当該電子部品１０に生じた熱が第１の締結部４１及び第２の締結部４２を介して装置ケース３０に伝播されやすくなっており、放熱性を向上することができる。 Next, the operation and effect of the power conversion device 1 of the present embodiment will be described in detail.
According to the power converter 1 of the present embodiment, the electronic component 10 attached to the capacitor module 2 includes the first fastening portion 41 and the second fastening portion 42 for fixing the capacitor module 2 to the device case 30. It is located between. Thereby, the heat generated in the electronic component 10 is easily transmitted to the device case 30 via the first fastening portion 41 and the second fastening portion 42, and the heat dissipation can be improved.
　また、本実施形態では、複数の締結部４０の中で、コンデンサモジュール２に取り付けられた電子部品１０である放電抵抗１２及び放電回路１３に最も近い位置に位置している第１の締結部４１は、内側底面３１からの高さＨ１が複数の締結部４０の中で最も高い。これにより、コンデンサモジュール２に取り付けられた電子部品１０から発生される熱を第１の締結部４１を介して積極的に外部に放出することができるため、放熱性を一層高めることができる。なお、第１の締結部４１に替えて他の締結部４０が、複数の締結部４０の中で、コンデンサモジュール２に取り付けられた電子部品１０に最も近い位置に位置しているとともに内側底面３１からの高さが複数の締結部４０の中で最も高くてもよい。この場合も同様の作用効果を奏する。 In the present embodiment, among the plurality of fastening portions 40, the first fastening portion 41 located closest to the discharge resistor 12 and the discharge circuit 13, which are the electronic components 10 attached to the capacitor module 2. The height H1 from the inner bottom surface 31 is the highest among the plurality of fastening portions 40. Thereby, heat generated from the electronic component 10 attached to the capacitor module 2 can be positively released to the outside through the first fastening portion 41, so that heat radiation can be further improved. It should be noted that another fastening portion 40 instead of the first fastening portion 41 is located at a position closest to the electronic component 10 attached to the capacitor module 2 among the plurality of fastening portions 40, and the inner bottom surface 31 May be the highest among the plurality of fastening portions 40. In this case, the same operation and effect can be obtained.
　また、本実施形態では、コンデンサ素子１１はコンデンサケース２０に収容されており、コンデンサケース２０は、コンデンサケース２０の一方の面に開口形成された開口面２３と、開口面２３と反対側の面に凹状に形成された凹部２４とを有し、凹部２４内には、第１の締結部４１が配置される締結部配置部２４１と、第１の締結部４１に締結される第１の被締結部２５と、第１の被締結部２５を挟んで締結部配置部２４１の反対側に締結用のネジ５１を取り付けるためのネジ取り付け部２４２を有する。これにより、第１の締結部４１が凹部２４内に位置しているため、発熱体である放電抵抗１２や放電回路１３と第１の締結部４１との距離が近くなることから、放熱性を一層向上することができる。 In the present embodiment, the capacitor element 11 is housed in the capacitor case 20. The capacitor case 20 has an opening surface 23 formed on one surface of the capacitor case 20, and a surface opposite to the opening surface 23. A concave portion 24 formed in a concave shape is formed in the concave portion 24. In the concave portion 24, a fastening portion arrangement portion 241 in which the first fastening portion 41 is arranged, and a first member fastened to the first fastening portion 41. A fastening portion 25 and a screw attachment portion 242 for attaching a fastening screw 51 to the opposite side of the fastening portion arrangement portion 241 with the first fastened portion 25 interposed therebetween. Accordingly, since the first fastening portion 41 is located in the concave portion 24, the distance between the first fastening portion 41 and the discharge resistor 12 or the discharge circuit 13, which is a heating element, becomes short, so that heat dissipation is reduced. It can be further improved.
　また、本実施形態では、凹部２４において、ネジ取り付け部２４２の肉厚Ｗ２は、締結部配置部２４１の肉厚Ｗ１よりも大きい。これにより、凹部２４を設けつつ、コンデンサケース２０の体積を大きく維持することができるため、発熱体である電子部品１０から第１の被締結部２５への熱伝導を向上させることで放熱性を高めることができる。 In the present embodiment, in the recess 24, the thickness W2 of the screw attachment portion 242 is larger than the thickness W1 of the fastening portion arrangement portion 241. Accordingly, the volume of the capacitor case 20 can be maintained large while providing the concave portion 24, so that heat conduction from the electronic component 10, which is a heating element, to the first fastening portion 25 is improved, so that heat dissipation is improved. Can be enhanced.
　また、本実施形態では、コンデンサモジュール２に取り付けられた電子部品１０である放電抵抗１２は、第１の締結部４１と第２の締結部４２との並び方向に直交する方向であって内側底面３１に平行な方向から見て、コンデンサ素子１１よりも締結部４０の少なくとも一つに近くなるように延設された延設部１２１を有する。これにより、放電抵抗１２の熱を一層放出しやすくなるため、放熱性が向上する。 Further, in the present embodiment, the discharge resistor 12, which is the electronic component 10 attached to the capacitor module 2, is in a direction orthogonal to the direction in which the first fastening portion 41 and the second fastening portion 42 are arranged and has an inner bottom surface. When viewed from a direction parallel to 31, there is provided an extending portion 121 extending closer to at least one of the fastening portions 40 than the capacitor element 11. As a result, the heat of the discharge resistor 12 is more easily released, and the heat dissipation is improved.
　また、本実施形態では、延設部１２１は、締結部４１～４３の高さ方向Ｚに突出している。これにより、一層放熱性を向上させることができる。 In the present embodiment, the extending portion 121 protrudes in the height direction Z of the fastening portions 41 to 43. Thereby, the heat dissipation can be further improved.
　また、本実施形態では、コンデンサモジュール２に取り付けられた電子部品１０は、放電抵抗１２及び放電回路１３を構成している。これにより、電子部品１０のなかでも比較的発熱量の多い放電抵抗１２及び放電回路１３からの熱の放出を促すことができるため、放熱性の向上に寄与する。 In addition, in the present embodiment, the electronic component 10 attached to the capacitor module 2 forms the discharge resistor 12 and the discharge circuit 13. This can promote the release of heat from the discharge resistor 12 and the discharge circuit 13 that generate a relatively large amount of heat in the electronic component 10, thereby contributing to an improvement in heat dissipation.
　以上のごとく、本実施形態によれば、放熱性が向上されるコンデンサモジュール２を備える電力変換装置１を提供することができる。 As described above, according to the present embodiment, it is possible to provide the power conversion device 1 including the capacitor module 2 having improved heat dissipation.
　本実施形態では、図４に示すように、第１の締結部４１の高さＨ１をコンデンサモジュール２の高さ方向Ｚの中央位置Ｃの高さＨ０よりも高くし、第２の締結部４２の高さＨ２と第３の締結部４３の高さＨ３をＨ０よりも低くしたが、これに替えて、図７に示す変形形態１のように、Ｈ１～Ｈ３をＨ０よりも高くしてもよい。また、図８に示す変形形態２のように、第１の被締結部２５をコンデンサモジュール２のＸ方向の一方の端部に設け、第２の被締結部２６をＸ方向の他方の端部に設け、当該第１の被締結部２５に第１の締結部４１が締結されるようにするとともに、当該第２の被締結部２６に第２の締結部４２が締結されるようにしてもよい。なお、いずれの変形形態１、２においても、実施形態１と同等の構成には同一の符号を付してその説明を省略する。当該変形形態１、２においても上記実施形態１の場合と同等の作用効果を奏する。 In the present embodiment, as shown in FIG. 4, the height H1 of the first fastening portion 41 is made higher than the height H0 of the center position C in the height direction Z of the capacitor module 2, and the second fastening portion 42 The height H2 of the third fastening portion 43 and the height H3 of the third fastening portion 43 are set lower than H0. Alternatively, the height H1 to H3 may be set higher than H0 as in Modification 1 shown in FIG. Good. Also, as in Modification 2 shown in FIG. 8, the first fastened portion 25 is provided at one end in the X direction of the capacitor module 2, and the second fastened portion 26 is provided at the other end in the X direction. The first fastening portion 41 is fastened to the first fastened portion 25, and the second fastening portion 42 is fastened to the second fastened portion 26. Good. In each of the first and second modifications, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Also in the first and second modifications, the same operation and effect as those of the first embodiment can be obtained.
　また、本実施形態では、図２に示すように、複数の電子部品１０においてコンデンサ素子１１以外の他の電子部品１０としての放電抵抗１２、放電回路１３、コンデンサＰバスバ１４及びコンデンサＮバスバ１５が、コンデンサモジュール２のポッティング面である側面２１に取り付けられていることとしたが、他の電子部品は側面２１以外のコンデンサモジュール２の側面に取り付けられていてもよい。例えば、図９、図１０に示す変形形態３のように、複数の電子部品１０に含まれるコンデンサ素子１１以外の電子部品である放電抵抗１２及び放電回路１３が、それぞれコンデンサモジュール２の高さ方向Ｚの上側の面２８に設けられていてもよい。そして、変形形態３では、放電抵抗１２及び放電回路１３は、第１の締結部４１に近くなるように延設された延設部１２２を有する。なお、変形形態３においても、実施形態１と同等の構成には同一の符号を付してその説明を省略する。 In the present embodiment, as shown in FIG. 2, in the plurality of electronic components 10, a discharge resistor 12, a discharge circuit 13, a capacitor P bus bar 14, and a capacitor N bus bar 15 as other electronic components 10 other than the capacitor element 11 are provided. Although the electronic component is mounted on the side surface 21 which is the potting surface of the capacitor module 2, other electronic components may be mounted on the side surface of the capacitor module 2 other than the side surface 21. For example, as in Modification 3 shown in FIGS. 9 and 10, the discharge resistor 12 and the discharge circuit 13 which are electronic components other than the capacitor element 11 included in the plurality of electronic components 10 are respectively arranged in the height direction of the capacitor module 2. It may be provided on the upper surface 28 of Z. In the third modification, the discharge resistor 12 and the discharge circuit 13 have the extending portion 122 extended so as to be closer to the first fastening portion 41. In the third modification, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
　当該変形形態３では、図１０に示すように、放電抵抗１２及び放電回路１３は、第１の締結部４１と第２の締結部４２との並び方向に直交する方向であって内側底面３１に平行な方向から見て第１の締結部４１と第２の締結部４２との間に位置しており、変形形態３においても上記実施形態１の場合と同等の作用効果を奏する。 In the third modification, as shown in FIG. 10, the discharge resistor 12 and the discharge circuit 13 are arranged in a direction orthogonal to the direction in which the first fastening portion 41 and the second fastening portion 42 are arranged and on the inner bottom surface 31. It is located between the first fastening portion 41 and the second fastening portion 42 when viewed from a parallel direction, and also has the same operation and effect as in the first embodiment in the third modification.
　本開示は、実施形態に準拠して記述されたが、本開示は当該実施形態や構造に限定されるものではないと理解される。本開示は、様々な変形形態や均等範囲内の変形をも包含する。加えて、様々な組み合わせや形態、さらには、それらに一要素のみ、それ以上、あるいはそれ以下、を含む他の組み合わせや形態をも、本開示の範疇や思想範囲に入るものである。 Although the present disclosure has been described based on the embodiment, it is understood that the present disclosure is not limited to the embodiment and the structure. The present disclosure also encompasses various modifications and variations within an equivalent range. In addition, various combinations and forms, and other combinations and forms including only one element, more or less, are also included in the scope and spirit of the present disclosure.

Claims (7)

  1. 　電力変換回路を構成する複数の電子部品（１０）と、
    　上記複数の電子部品に含まれるコンデンサ素子（１１）を含むコンデンサモジュール（２）と、
    　上記複数の電子部品及び上記コンデンサモジュールを収容する装置ケース（３０）と、
    　を備え、
    　上記コンデンサモジュールは、上記装置ケースの内側底面（３１）に立設された第１の締結部（４１）と第２の締結部（４２）とを含む複数の締結部（４０）によって上記装置ケースに固定されており、
    　上記複数の電子部品のうち上記コンデンサ素子以外の少なくとも一つは、上記コンデンサモジュールに取り付けられているとともに、上記第１の締結部と上記第２の締結部との並び方向に直交する方向であって上記装置ケースの上記内側底面に平行な方向から見て上記第１の締結部と上記第２の締結部との間に位置している、電力変換装置（１）。     A plurality of electronic components (10) constituting a power conversion circuit;
    A capacitor module (2) including a capacitor element (11) included in the plurality of electronic components;
    An apparatus case (30) that houses the plurality of electronic components and the capacitor module;
    With
    The capacitor module is provided with a plurality of fastening portions (40) including a first fastening portion (41) and a second fastening portion (42) erected on an inner bottom surface (31) of the device case. Is fixed to
    At least one of the plurality of electronic components other than the capacitor element is attached to the capacitor module and has a direction orthogonal to a direction in which the first fastening portion and the second fastening portion are arranged. A power converter (1) located between the first fastening portion and the second fastening portion as viewed from a direction parallel to the inner bottom surface of the device case.
  2. 　上記複数の締結部の中で上記コンデンサモジュールに取り付けられた上記電子部品に最も近い位置に位置している締結部は、上記内側底面からの高さが上記複数の締結部の中で最も高い、請求項１に記載の電力変換装置。 Among the plurality of fastening portions, the fastening portion located closest to the electronic component attached to the capacitor module has the highest height from the inner bottom surface among the plurality of fastening portions, The power converter according to claim 1.
  3. 　上記コンデンサ素子はコンデンサケース（２０）に収容されており、
    　該コンデンサケースは、該コンデンサケースの一方の面に開口形成された開口面（２３）と、該開口面と反対側の面に凹状に形成された凹部（２４）と、を有し、
    　該凹部内には、上記第１の締結部が配置される締結部配置部（２４１）と、上記第１の締結部に締結される第１の被締結部（２５）と、該第１の被締結部を挟んで上記締結部配置部の反対側に締結用のネジを取り付けるためのネジ取り付け部（２４２）を有する、請求項１又は２に記載の電力変換装置。     The capacitor element is housed in a capacitor case (20),
    The capacitor case has an opening surface (23) formed on one surface of the capacitor case, and a concave portion (24) formed in a concave shape on a surface opposite to the opening surface,
    In the recess, a fastening portion arrangement portion (241) in which the first fastening portion is arranged, a first fastened portion (25) fastened to the first fastening portion, and a first fastening portion (25). 3. The power converter according to claim 1, further comprising: a screw attachment portion for attaching a fastening screw to a side opposite to the fastening portion arrangement portion with the fastening portion interposed therebetween.
  4. 　上記凹部において、上記ネジ取り付け部の肉厚は、上記締結部配置部の肉厚よりも大きい、請求項３に記載の電力変換装置。 4. The power converter according to claim 3, wherein, in the recess, a thickness of the screw attachment portion is larger than a thickness of the fastening portion arrangement portion.
  5. 　上記コンデンサモジュールに取り付けられた上記電子部品は、上記第１の締結部と上記第２の締結部との並び方向に直交する方向であって上記内側底面に平行な方向から見て、上記コンデンサ素子よりも上記締結部の少なくとも一つに近くなるように延設された延設部を有する、請求項１～４のいずれか一項に記載の電力変換装置。 The electronic component attached to the capacitor module may be configured such that the capacitor element is viewed from a direction orthogonal to a direction in which the first fastening portion and the second fastening portion are arranged and parallel to the inner bottom surface. The power converter according to any one of claims 1 to 4, further comprising an extension portion extending so as to be closer to at least one of the fastening portions.
  6. 　上記延設部は、上記締結部の高さ方向に突出している、請求項５に記載の電力変換装置。 The power converter according to claim 5, wherein the extension portion protrudes in a height direction of the fastening portion.
  7. 　上記コンデンサモジュールに取り付けられた上記電子部品は、放電抵抗（１２）及び／又は放電回路（１３）を構成している、請求項１～６のいずれか一項に記載の電力変換装置。 The power converter according to any one of claims 1 to 6, wherein the electronic component mounted on the capacitor module forms a discharge resistor (12) and / or a discharge circuit (13).
PCT/JP2019/031217 2018-08-10 2019-08-07 Power conversion device WO2020032132A1 (en)

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US17/170,978 US11563384B2 (en) 2018-08-10 2021-02-09 Capacitor device

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014124077A (en) * 2012-11-22 2014-07-03 Denso Corp Electric power conversion device
JP2014207427A (en) * 2013-03-20 2014-10-30 株式会社デンソー Capacitor module
WO2015052984A1 (en) * 2013-10-09 2015-04-16 日産自動車株式会社 Electrical power converter
JP2017085816A (en) * 2015-10-29 2017-05-18 株式会社豊田自動織機 On-vehicle air conditioner
JP2018078247A (en) * 2016-11-11 2018-05-17 トヨタ自動車株式会社 Capacitor module

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014124077A (en) * 2012-11-22 2014-07-03 Denso Corp Electric power conversion device
JP2014207427A (en) * 2013-03-20 2014-10-30 株式会社デンソー Capacitor module
WO2015052984A1 (en) * 2013-10-09 2015-04-16 日産自動車株式会社 Electrical power converter
JP2017085816A (en) * 2015-10-29 2017-05-18 株式会社豊田自動織機 On-vehicle air conditioner
JP2018078247A (en) * 2016-11-11 2018-05-17 トヨタ自動車株式会社 Capacitor module

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