JP2021132466A - Electric power conversion apparatus - Google Patents

Electric power conversion apparatus Download PDF

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JP2021132466A
JP2021132466A JP2020026489A JP2020026489A JP2021132466A JP 2021132466 A JP2021132466 A JP 2021132466A JP 2020026489 A JP2020026489 A JP 2020026489A JP 2020026489 A JP2020026489 A JP 2020026489A JP 2021132466 A JP2021132466 A JP 2021132466A
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case
support portion
recess
housed
power conversion
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JP7298504B2 (en
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正道 石川
Masamichi Ishikawa
正道 石川
直希 野村
Naoki Nomura
直希 野村
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Denso Corp
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Denso Corp
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Abstract

To provide an electric power conversion apparatus in which it is suppressed that a protruded portion is hard to be housed in an engagement portion.SOLUTION: An electric power conversion apparatus has a case 900 provided with a first case 400 and a second case 600 both aligned in an opposing direction, and an electric part 510 housed in the case. In the first case, fixing portions 430 and 440 are formed provided with a first supporting portion 431 extending from the first case toward the second case in the opposing direction, and a second supporting portion 432 extending in a manner of separating from the first supporting portion in the opposing direction, and having a length in a planar direction perpendicular to the opposing direction shorter than the first supporting portion. In the second case, housing holes 630 and 640 are formed provided with a first recessed portion 631 recessed in a manner of separating from the first case in the opposing direction, and a second recessed portion 632 recessed in a manner of separating from the first recessed portion in the opposing direction, and having a length in the planar direction shorter than the first recessed portion. The first supporting portion is housed in the first recessed portion, and the second supporting portion is housed in the second recessed portion.SELECTED DRAWING: Figure 4

Description

本明細書に記載の開示は、固定部を備える電力変換装置に関するものである。 The disclosure described herein relates to a power converter having a fixed portion.

特許文献１に記載された電力変換装置はインバータケースとコンバータケースを有している。インバータケースは車両上下方向の上側に位置している。コンバータケースは車両上下方向の下側に位置している。 The power conversion device described in Patent Document 1 has an inverter case and a converter case. The inverter case is located on the upper side in the vertical direction of the vehicle. The converter case is located on the lower side in the vertical direction of the vehicle.

特開２０１９−１１１９１８号公報JP-A-2019-111918

コンバータケースにインバータケースに向かって突出する突出部が設けられている。インバータケースに凹形状を成す噛み合い部が設けられている。突出部が噛み合い部に収納されている。 The converter case is provided with a protrusion that protrudes toward the inverter case. The inverter case is provided with a concave meshing portion. The protruding part is housed in the meshing part.

しかしながら突出部が太いと、突出部が噛み合い部に収納されにくくなる虞がある。 However, if the protruding portion is thick, the protruding portion may be difficult to be housed in the meshing portion.

そこで本明細書に記載の開示は、突出部が噛み合い部に収納されにくくなることの抑制された電力変換装置を提供することを目的とする。 Therefore, it is an object of the disclosure described in the present specification to provide a power conversion device in which the protruding portion is less likely to be housed in the meshing portion.

開示の１つは、
対向方向で並ぶ第１ケース（４００）と第２ケース（６００）を備えるケース（９００）と、
ケースに収納される電気部品（５１０）と、を有し、
第１ケースには対向方向で第１ケースから第２ケースに向かって延びる第１支持部（４３１）と、第１支持部から対向方向に離れる態様で延びる、第１支持部より対向方向に直交する平面方向の長さの短い第２支持部（４３２）と、を備える固定部（４３０，４４０）が形成されており、
第２ケースには対向方向で第１ケースから離れる態様で凹む第１凹部（６３１）と、第１凹部から対向方向に離れる態様で凹む、第１凹部より平面方向の長さの短い第２凹部（６３２）と、を備える収納孔（６３０，６４０）が形成されており、
第１凹部に第１支持部が収納され、
第２凹部に第２支持部が収納されている。 One of the disclosures is
A case (900) having a first case (400) and a second case (600) arranged in opposite directions, and a case (900).
Has electrical components (510) stored in the case,
The first case has a first support portion (431) extending from the first case toward the second case in the opposite direction and an orthogonal portion in the opposite direction from the first support portion extending in the opposite direction from the first support portion. A second support portion (432) having a short length in the plane direction and a fixed portion (430, 440) provided with the second support portion (432) are formed.
The second case has a first recess (631) that is recessed in a direction away from the first case in the opposite direction, and a second recess (631) that is recessed in a manner away from the first recess in the plane direction from the first recess. (632) and storage holes (630, 640) including the storage holes (630, 640) are formed.
The first support part is stored in the first recess,
The second support portion is housed in the second recess.

これによれば、第１支持部（４３１）より平面方向の長さの短い第２支持部（４３２）は、第２凹部（６３２）よりも平面方向の長さの長い第１凹部（６３１）を通った後に、第２凹部（６３２）に収納される。そのために第２支持部（４３２）が第１凹部（６３１）に収納されにくくなることが抑制されやすくなっている。 According to this, the second support portion (432), which is shorter in the plane direction than the first support portion (431), has a first recess (631) which is longer in the plane direction than the second recess (632). After passing through, it is stored in the second recess (632). Therefore, it is easy to prevent the second support portion (432) from being easily stored in the first recess (631).

なお、上記の括弧内の参照番号は、後述の実施形態に記載の構成との対応関係を示すものに過ぎず、技術的範囲を何ら制限するものではない。 The reference numbers in parentheses above merely indicate the correspondence with the configurations described in the embodiments described later, and do not limit the technical scope at all.

車載システムを示す回路図である。It is a circuit diagram which shows an in-vehicle system. 電力変換装置の上面図である。It is a top view of the power conversion device. 図２に示す電力変換装置から第２ケースを除いた上面図である。It is a top view of the power conversion device shown in FIG. 2 excluding the second case. ＩＶ−ＩＶ線に沿った固定部の収納形態を説明するための断面図である。It is sectional drawing for demonstrating the storage form of the fixed part along the IV-IV line. 第１支持部と第２支持部のｚ方向の長さの関係を説明するための断面図である。It is sectional drawing for demonstrating the relationship of the length of the 1st support part and the 2nd support part in the z direction. 変形例を説明するための上面図である。It is a top view for demonstrating a modification. 変形例を説明するための上面図である。It is a top view for demonstrating a modification.

以下、実施形態を図に基づいて説明する。 Hereinafter, embodiments will be described with reference to the drawings.

（第１実施形態）
図１に基づいて電力変換装置５００の設けられる車載システム１００を説明する。車載システム１００は電気自動車用のシステムを構成している。車載システム１００はバッテリ２００、電力変換装置５００、モータ７００、および、複数のＥＣＵ８００を有する。なお、図１においてはバッテリ２００をＢ、ＥＣＵ８００をＥとして示している。 (First Embodiment)
An in-vehicle system 100 provided with the power conversion device 500 will be described with reference to FIG. The in-vehicle system 100 constitutes a system for an electric vehicle. The in-vehicle system 100 includes a battery 200, a power conversion device 500, a motor 700, and a plurality of ECUs 800. In FIG. 1, the battery 200 is shown as B and the ECU 800 is shown as E.

複数のＥＣＵ８００はバス配線を介して相互に信号を送受信している。複数のＥＣＵ８００は協調して電気自動車を制御している。複数のＥＣＵ８００の制御により、バッテリ２００のＳＯＣに応じたモータ７００の回生と力行が制御される。ＥＣＵ８００はelectronic control unitの略である。ＳＯＣはstate of chargeの略である。 The plurality of ECUs 800 transmit and receive signals to and from each other via bus wiring. The plurality of ECUs 800 cooperate to control the electric vehicle. By controlling the plurality of ECUs 800, the regeneration and power running of the motor 700 according to the SOC of the battery 200 are controlled. ECU 800 is an abbreviation for electronic control unit. SOC is an abbreviation for state of charge.

バッテリ２００は複数の二次電池を有する。これら複数の二次電池は直列接続された電池スタックを構成している。この電池スタックのＳＯＣがバッテリ２００のＳＯＣに相当する。二次電池としてはリチウムイオン二次電池、ニッケル水素二次電池、および、有機ラジカル電池などを採用することができる。 The battery 200 has a plurality of secondary batteries. These plurality of secondary batteries form a battery stack connected in series. The SOC of this battery stack corresponds to the SOC of the battery 200. As the secondary battery, a lithium ion secondary battery, a nickel hydrogen secondary battery, an organic radical battery, or the like can be adopted.

電力変換装置５００の備えるインバータ３００は、バッテリ２００の正極と電気的に接続されたＰバスバと、バッテリ２００の負極と電気的に接続されたＮバスバとの間で並列接続された３相以上のレグを備えている。各相のレグはＰバスバとＮバスバとの間で直列接続された複数のスイッチ素子を備えている。なお、図１においてはインバータ３００をＩとして示している。 The inverter 300 included in the power converter 500 has three or more phases connected in parallel between the P bus bar electrically connected to the positive electrode of the battery 200 and the N bus bar electrically connected to the negative electrode of the battery 200. It has a leg. The leg of each phase includes a plurality of switch elements connected in series between the P bus bar and the N bus bar. In addition, in FIG. 1, the inverter 300 is shown as I.

またこれら複数のスイッチ素子は封止部材で封止され、複数のスイッチモジュールを構成している。封止部材からスイッチ素子それぞれのゲート電極に接続されたゲート端子の一部が露出されている。これらゲート端子と複数のＥＣＵ８００のうちのＭＧＥＣＵとが電気的に接続されることで複数のスイッチ素子がＰＷＭ制御されている。 Further, these plurality of switch elements are sealed with a sealing member to form a plurality of switch modules. A part of the gate terminal connected to the gate electrode of each switch element is exposed from the sealing member. The plurality of switch elements are PWM-controlled by electrically connecting these gate terminals to the MGECUs of the plurality of ECUs 800.

電力変換装置５００がＰＷＭ制御されることで、バッテリ２００から供給された直流電力が交流電力に変換される。この交流電力がモータ７００に供給される。また、モータ７００での発電によって生じた交流電力が電力変換装置５００で直流電力に変換される。この直流電力がバッテリ２００や他の図示しない車載機器に供給される。なお、電力変換装置５００はインバータ３００の他に、入力される直流電力の電圧レベルを昇降圧するコンバータを備えていてもよい。 By PWM control of the power conversion device 500, the DC power supplied from the battery 200 is converted into AC power. This AC power is supplied to the motor 700. Further, the AC power generated by the power generation by the motor 700 is converted into DC power by the power conversion device 500. This DC power is supplied to the battery 200 and other in-vehicle devices (not shown). In addition to the inverter 300, the power conversion device 500 may include a converter that raises and lowers the voltage level of the input DC power.

＜電力変換装置の機械的構成＞
次に、電力変換装置５００の機械的構成を説明する。それに当たって、以下においては互いに直交の関係にある３方向をｘ方向、ｙ方向、および、ｚ方向とする。ｘ方向は第１方向に相当する。ｚ方向は対向方向に相当する。なお、図２〜図７においては方向の記載を省略している。 <Mechanical configuration of power converter>
Next, the mechanical configuration of the power converter 500 will be described. In this regard, in the following, the three directions orthogonal to each other will be referred to as the x direction, the y direction, and the z direction. The x direction corresponds to the first direction. The z direction corresponds to the opposite direction. In addition, in FIGS. 2 to 7, the description of the direction is omitted.

電力変換装置５００はこれまでに説明した電力変換回路の構成要素の他に、図２〜図４に示す第１ケース４００、第２ケース６００、ボルト、カバー、冷却器、および、基板を有する。ボルト、カバー、冷却器、および、基板については図示を省略している。 The power conversion device 500 includes a first case 400, a second case 600, a bolt, a cover, a cooler, and a substrate shown in FIGS. 2 to 4 in addition to the components of the power conversion circuit described so far. Bolts, covers, coolers, and substrates are not shown.

図３に示すように第１ケース４００は底部４１０と第１環状部４２０を有する。底部４１０はｚ方向に厚さの薄い扁平形状を成している。第１環状部４２０は底部４１０の内底面４１０ａからｚ方向に環状に起立している。 As shown in FIG. 3, the first case 400 has a bottom portion 410 and a first annular portion 420. The bottom 410 has a flat shape with a thin thickness in the z direction. The first annular portion 420 stands up in an annular shape in the z direction from the inner bottom surface 410a of the bottom portion 410.

第１環状部４２０はｘ方向に互いに離間して対向する第１壁部４２１と第３壁部４２３、および、ｙ方向で互いに離間して対向する第２壁部４２２と第４壁部４２４を有している。第１壁部４２１、第２壁部４２２、第３壁部４２３、第４壁部４２４はｚ方向のまわりの周方向に環状に連結されている。 The first annular portion 420 includes a first wall portion 421 and a third wall portion 423 that are separated from each other in the x direction and face each other, and a second wall portion 422 and a fourth wall portion 424 that are separated from each other in the y direction and face each other. Have. The first wall portion 421, the second wall portion 422, the third wall portion 423, and the fourth wall portion 424 are annularly connected in the circumferential direction around the z direction.

図３および図４に示すように、これら第１壁部４２１〜第４壁部４２４の底部４１０から離間した先端側の上端面４２０ａに、ｚ方向に延びる第１固定部４３０と第２固定部４４０が形成されている。第１固定部４３０と第２固定部４４０の詳細な形態については後で説明する。 As shown in FIGS. 3 and 4, the first fixing portion 430 and the second fixing portion extending in the z direction on the upper end surface 420a on the tip side separated from the bottom 410 of the first wall portions 421 to the fourth wall portions 424. 440 is formed. The detailed form of the first fixing portion 430 and the second fixing portion 440 will be described later.

第１固定部４３０は第１壁部４２１と第４壁部４２４の交差する角に形成されている。第２固定部４４０は第２壁部４２２と第３壁部４２３の交差する角に形成されている。これら第１固定部４３０と第２固定部４４０は対角線上で並んでいる。なお、第１固定部４３０と第２固定部４４０は上端面４２０ａ上であればよく、上記した角に形成されていなくてもよい。 The first fixed portion 430 is formed at an intersecting corner of the first wall portion 421 and the fourth wall portion 424. The second fixed portion 440 is formed at an intersecting corner of the second wall portion 422 and the third wall portion 423. The first fixed portion 430 and the second fixed portion 440 are arranged diagonally. The first fixing portion 430 and the second fixing portion 440 may be on the upper end surface 420a and may not be formed at the above-mentioned corners.

図２に示すように第２ケース６００はｚ方向周りの周方向に環状を成す第２環状部６２０を有する。第２環状部６２０はｘ方向に互いに離間して対向する第５壁部６２１と第７壁部６２３、および、ｙ方向で互いに離間して対向する第６壁部６２２と第８壁部６２４を有している。第５壁部６２１、第６壁部６２２、第７壁部６２３、第８壁部６２４は周方向に環状に連結されている。 As shown in FIG. 2, the second case 600 has a second annular portion 620 forming an annular shape in the circumferential direction around the z direction. The second annular portion 620 has a fifth wall portion 621 and a seventh wall portion 623 that are separated from each other in the x direction and face each other, and a sixth wall portion 622 and an eighth wall portion 624 that are separated from each other in the y direction and face each other. Have. The fifth wall portion 621, the sixth wall portion 622, the seventh wall portion 623, and the eighth wall portion 624 are connected in an annular shape in the circumferential direction.

図２および図４に示すようにこれら第５壁部６２１〜第８壁部６２４の第１ケース４００側の先端の下端面６２０ａに、下端面６２０ａからｚ方向に凹む第１収納孔６３０と第２収納孔６４０が形成されている。第１収納孔６３０と第２収納孔６４０の詳細な形態については後で説明する。 As shown in FIGS. 2 and 4, the lower end surface 620a of the tip of the fifth wall portion 621 to the eighth wall portion 624 on the first case 400 side has a first storage hole 630 and a first storage hole 630 recessed in the z direction from the lower end surface 620a. 2 storage holes 640 are formed. The detailed form of the first storage hole 630 and the second storage hole 640 will be described later.

第１収納孔６３０は第５壁部６２１と第８壁部６２４の交差する角に形成されている。第２収納孔６４０は第６壁部６２２と第７壁部６２３の交差する角に形成されている。なお第１収納孔６３０と第２収納孔６４０の位置は下端面６２０ａ上であればよく、上記した角に形成されていなくてもよい。 The first storage hole 630 is formed at the intersecting corner of the fifth wall portion 621 and the eighth wall portion 624. The second storage hole 640 is formed at the intersecting corner of the sixth wall portion 622 and the seventh wall portion 623. The positions of the first storage hole 630 and the second storage hole 640 may be on the lower end surface 620a and may not be formed at the above-mentioned corners.

図２〜図４に示すように、第１ケース４００と第２ケース６００は上端面４２０ａと下端面６２０ａとがｚ方向で対向する態様で並んでいる。 As shown in FIGS. 2 to 4, the first case 400 and the second case 600 are arranged so that the upper end surface 420a and the lower end surface 620a face each other in the z direction.

第１ケース４００の底部４１０と第１環状部４２０によって区画される第１空間と、第２ケース６００の第２環状部６２０によって区画される空間とがｚ方向で連通している。第１収納孔６３０に第１固定部４３０が収納されている。図示しないが、第２収納孔６４０に第２固定部４４０が収納されている。第１ケース４００と第２ケース６００はボルトによって連結されている。 The first space partitioned by the bottom 410 and the first annular portion 420 of the first case 400 and the space partitioned by the second annular portion 620 of the second case 600 communicate with each other in the z direction. The first fixing portion 430 is housed in the first storage hole 630. Although not shown, the second fixing portion 440 is housed in the second storage hole 640. The first case 400 and the second case 600 are connected by bolts.

カバーはｚ方向の厚さの薄い扁平形状を成している。第２ケース６００の第１ケース４００からｚ方向に離間した側の開口を閉塞する態様で、カバーが第２ケース６００に連結されている。このようにして第１ケース４００と第２ケース６００とカバーによって収納空間が区画されている。この収納空間に冷却器と基板が収納されている。 The cover has a flat shape with a thin thickness in the z direction. The cover is connected to the second case 600 in such a manner that the opening on the side of the second case 600 separated from the first case 400 in the z direction is closed. In this way, the storage space is partitioned by the first case 400, the second case 600, and the cover. The cooler and the board are stored in this storage space.

冷却器には上記したスイッチモジュールが積層配置され、パワーモジュール５１０が構成されている。基板には例えば上記したＭＧＥＣＵ等が搭載されている。パワーモジュール５１０は電気部品に相当する。 The above-mentioned switch modules are stacked and arranged in the cooler to form a power module 510. For example, the above-mentioned MGECU and the like are mounted on the substrate. The power module 510 corresponds to an electric component.

パワーモジュール５１０と基板が第２ケース６００にボルトなどによって連結されている。基板はパワーモジュール５１０よりもカバー側に配置されている。 The power module 510 and the board are connected to the second case 600 by bolts or the like. The board is arranged on the cover side of the power module 510.

パワーモジュール５１０の備えるスイッチモジュールからゲート端子の一部が露出され、基板に向かって延びている。ゲート端子と基板とが電気的および機械的に接続されている。 A part of the gate terminal is exposed from the switch module included in the power module 510 and extends toward the substrate. The gate terminal and the board are electrically and mechanically connected.

＜固定部と収納孔＞
図４に示すように第１固定部４３０は円柱形状を成す第１支持部４３１と第２支持部４３２を有している。第１支持部４３１は上端面４２０ａからｚ方向に第２ケース６００に向かって延びている。第２支持部４３２は第１支持部４３１のｚ方向の端の第１先端面４３１ａからｚ方向に離れる態様で延びている。 <Fixed part and storage hole>
As shown in FIG. 4, the first fixing portion 430 has a first supporting portion 431 and a second supporting portion 432 having a cylindrical shape. The first support portion 431 extends from the upper end surface 420a toward the second case 600 in the z direction. The second support portion 432 extends in a manner away from the first tip surface 431a at the end of the first support portion 431 in the z direction in the z direction.

図４に示すように第１固定部４３０は第１支持部４３１に第２支持部４３２の連結された２段構造を成している。第２支持部４３２におけるｚ方向に直交する平面方向の差し渡しの長さＬ２は、第１支持部４３１における平面方向の差し渡しの長さＬ１よりも短くなっている。 As shown in FIG. 4, the first fixing portion 430 has a two-stage structure in which the second supporting portion 432 is connected to the first supporting portion 431. The length L2 of the second support portion 432 in the plane direction orthogonal to the z direction is shorter than the length L1 of the first support portion 431 in the plane direction.

なお、第１支持部４３１および第２支持部４３２それぞれの形状は円柱形状でなくてもよい。その場合、第２支持部４３２における平面方向の差し渡しの最大長さは、第１支持部４３１における平面方向の差し渡しの最大長さよりも短くなっている。 The shape of each of the first support portion 431 and the second support portion 432 does not have to be a cylindrical shape. In that case, the maximum length of the transfer in the plane direction of the second support portion 432 is shorter than the maximum length of the transfer in the plane direction of the first support portion 431.

また、図４に示すように第１収納孔６３０は円柱状に凹む、第１凹部６３１と第２凹部６３２を有している。第１凹部６３１は下端面６２０ａからｚ方向に第１ケース４００から離れる態様で凹んでいる。第２凹部６３２は第１凹部６３１の第１底面６３１ａからｚ方向に離れる対向で凹んでいる。 Further, as shown in FIG. 4, the first storage hole 630 has a first recess 631 and a second recess 632 that are recessed in a columnar shape. The first recess 631 is recessed from the lower end surface 620a in the z direction away from the first case 400. The second recess 632 is recessed in the opposite direction away from the first bottom surface 631a of the first recess 631 in the z direction.

図４に示すように第１収納孔６３０は第１凹部６３１に第２凹部６３２の連結された２段構造を成している。第２凹部６３２における平面方向の差し渡しの長さＬ４は、第１凹部６３１における平面方向の差し渡しの長さＬ３よりも短くなっている。 As shown in FIG. 4, the first storage hole 630 has a two-stage structure in which the second recess 632 is connected to the first recess 631. The length L4 of the crossing in the plane direction in the second recess 632 is shorter than the length L3 of the crossing in the plane direction in the first recess 631.

なお、第１凹部６３１および第２凹部６３２それぞれは円柱状に凹んでいなくてもよい。その場合、第２凹部６３２における平面方向の最長の差し渡しの長さは、第１凹部６３１における平面方向の最長の差し渡しの長さよりも短くなっている。 The first recess 631 and the second recess 632 do not have to be recessed in a columnar shape. In that case, the longest delivery length in the plane direction at the second recess 632 is shorter than the longest delivery length in the plane direction at the first recess 631.

第１固定部４３０が第１収納孔６３０に収納される際、先ず第１凹部６３１に第２支持部４３２が挿入される。その後、第２凹部６３２に第２支持部４３２が収納される。それとともに、第１凹部６３１に第１支持部４３１が収納される。 When the first fixing portion 430 is housed in the first storage hole 630, the second support portion 432 is first inserted into the first recess 631. After that, the second support portion 432 is housed in the second recess 632. At the same time, the first support portion 431 is housed in the first recess 631.

その際、下端面６２０ａと第１底面６３１ａとを連結する第１凹面６３１ｂと、上端面４２０ａと第１先端面４３１ａとを連結する第１支持面４３１ｂとの間に空隙が生じている。第１凹面６３１ｂは第１壁面に相当する。 At that time, a gap is formed between the first concave surface 631b that connects the lower end surface 620a and the first bottom surface 631a and the first support surface 431b that connects the upper end surface 420a and the first front end surface 431a. The first concave surface 631b corresponds to the first wall surface.

同様に、第１底面６３１ａと第２凹部６３２の第２底面６３２ａとを連結する第２凹面６３２ｂと、第１先端面４３１ａと第２支持部４３２の第２先端面４３２ａとを連結する第２支持面４３２ｂとの間に空隙が生じている。第２凹面６３２ｂは第２壁面に相当する。 Similarly, a second concave surface 632b that connects the first bottom surface 631a and the second bottom surface 632a of the second recess 632, and a second that connects the first tip surface 431a and the second tip surface 432a of the second support portion 432. A gap is formed between the support surface and the support surface 432b. The second concave surface 632b corresponds to the second wall surface.

第２支持面４３２ｂと第２凹面６３２ｂとの間の平面方向の離間距離Ｌ６は、第１支持面４３１ｂと第１凹面６３１ｂとの間の平面方向の離間距離Ｌ５よりも短くなっている。 The distance L6 in the plane direction between the second support surface 432b and the second concave surface 632b is shorter than the distance L5 in the plane direction between the first support surface 431b and the first concave surface 631b.

これにより第２支持部４３２は第１ケース４００と第２ケース６００の平面方向の相対位置を決める、位置決めの機能を果たしている。 As a result, the second support portion 432 fulfills a positioning function of determining the relative positions of the first case 400 and the second case 600 in the plane direction.

そのために第２支持部４３２は第１支持部４３１よりも精密に加工が施されている。例えばこれにより、第２支持部４３２は第１支持部４３１よりも真円度が高くなっている。 Therefore, the second support portion 432 is processed more precisely than the first support portion 431. For example, as a result, the second support portion 432 has a higher roundness than the first support portion 431.

また図５に示すように、第２支持部４３２のｚ方向の長さＬ８は、第１支持部４３１のｚ方向の長さＬ７よりも短くなっている。上記したように第２支持部４３２は第１ケース４００と第２ケース６００の平面方向の位置決めを行う。そのために位置決めに寄与しない第２支持部４３２のｚ方向の長さＬ８を短く設定できる。 Further, as shown in FIG. 5, the length L8 of the second support portion 432 in the z direction is shorter than the length L7 of the first support portion 431 in the z direction. As described above, the second support portion 432 positions the first case 400 and the second case 600 in the plane direction. Therefore, the length L8 of the second support portion 432 in the z direction, which does not contribute to positioning, can be set short.

なお、第２固定部４４０は第１固定部４３０と同様の形状を成している。第２収納孔６４０は第１収納孔６３０と同様の形状を成している。第２固定部４４０と第２収納孔６４０との位置関係においても第１固定部４３０と第１収納孔６３０との位置関係と同様の関係を示している。そのために第２固定部４４０と第２収納孔６４０に関する記載を省略する。 The second fixing portion 440 has the same shape as the first fixing portion 430. The second storage hole 640 has the same shape as the first storage hole 630. The positional relationship between the second fixing portion 440 and the second storage hole 640 also shows the same relationship as the positional relationship between the first fixing portion 430 and the first storage hole 630. Therefore, the description regarding the second fixing portion 440 and the second storage hole 640 will be omitted.

＜電力変換装置と車両＞
これまでに説明した電力変換装置５００は例えばエンジンルームに搭載されている。電力変換装置５００はこのエンジンルーム内で第１ケース４００の第１壁部４２１と第３壁部４２３が車両の進行方向に離間して並ぶ態様で収納されている。表現を変えれば、電力変換装置５００はこのエンジンルーム内で第２ケース６００の第５壁部６２１と第７壁部６２３が車両の進行方向に離間して並ぶ態様で収納されている。車両の進行方向はｘ方向と同じになっている。 <Power converter and vehicle>
The power conversion device 500 described so far is mounted in, for example, an engine room. The power conversion device 500 is housed in the engine room in such a manner that the first wall portion 421 and the third wall portion 423 of the first case 400 are arranged so as to be separated from each other in the traveling direction of the vehicle. In other words, the power conversion device 500 is housed in the engine room in such a manner that the fifth wall portion 621 and the seventh wall portion 623 of the second case 600 are arranged so as to be separated from each other in the traveling direction of the vehicle. The traveling direction of the vehicle is the same as the x direction.

車両に平面方向に衝撃が与えられると、電力変換装置５００の備える第１ケース４００と第２ケース６００に平面方向に衝撃が与えられる。この衝撃によって第１ケース４００と第２ケース６００の平面方向の相対位置が変化しようとする。その際、先ず、第２支持部４３２が第２凹部６３２に衝突する。これによって第２支持部４３２に平面方向の衝撃が与えられる。 When the vehicle is impacted in the plane direction, the first case 400 and the second case 600 included in the power conversion device 500 are impacted in the plane direction. Due to this impact, the relative positions of the first case 400 and the second case 600 in the plane direction tend to change. At that time, first, the second support portion 432 collides with the second recess 632. As a result, a plane impact is applied to the second support portion 432.

第２支持部４３２がこの衝撃によって変形した場合、次に第１支持部４３１が第１凹部６３１に衝突する。第１支持部４３１に平面方向の衝撃が与えられる。 When the second support portion 432 is deformed by this impact, the first support portion 431 then collides with the first recess 631. A plane impact is applied to the first support portion 431.

上記したように第１支持部４３１の平面方向の差し渡しの長さＬ１は、第２支持部４３２の平面方向の差し渡しの長さＬ２よりも長くなっている。そのために第１支持部４３１は第２支持部４３２よりも平面方向の衝撃に対する耐衝撃性が大きくなっている。 As described above, the length L1 of the first support portion 431 in the plane direction is longer than the length L2 of the second support portion 432 in the plane direction. Therefore, the first support portion 431 has a higher impact resistance to impact in the plane direction than the second support portion 432.

＜作用効果＞
これまでに説明したように第１収納孔６３０に第１固定部４３０が収納される際、先ず第１凹部６３１に第２支持部４３２が挿入される。その後、第２凹部６３２に第２支持部４３２が収納される。それに伴って第１凹部６３１に第１支持部４３１が収納される。 <Effect>
As described above, when the first fixing portion 430 is stored in the first storage hole 630, the second support portion 432 is first inserted into the first recess 631. After that, the second support portion 432 is housed in the second recess 632. Along with this, the first support portion 431 is housed in the first recess 631.

図４に示すように第１凹部６３１における平面方向の差し渡しの長さＬ３は、第２凹部６３２における平面方向の差し渡しの長さＬ４よりも長くなっている。そのために第１凹部６３１に第２支持部４３２が収納されやすくなっている。第１ケース４００と第２ケース６００とを組み付ける際の作業性が良くなりやすくなっている。 As shown in FIG. 4, the length L3 of the first recess 631 in the plane direction is longer than the length L4 of the second recess 632 in the plane direction. Therefore, the second support portion 432 is easily housed in the first recess 631. Workability when assembling the first case 400 and the second case 600 is likely to be improved.

これまでに説明したように第２支持面４３２ｂと第２凹面６３２ｂとの間の平面方向の離間距離Ｌ６は、第１支持面４３１ｂと第１凹面６３１ｂとの間の平面方向の離間距離Ｌ５よりも短くなっている。そのために第２支持部４３２は第１ケース４００と第２ケース６００の平面方向の位置を決める、位置決めの機能を果たしている。以下、第１ケース４００と第２ケース６００を合わせて、適宜、ケース９００と示す。 As described above, the distance L6 in the plane direction between the second support surface 432b and the second concave surface 632b is more than the distance L5 in the plane direction between the first support surface 431b and the first concave surface 631b. Is also getting shorter. Therefore, the second support portion 432 fulfills a positioning function of determining the positions of the first case 400 and the second case 600 in the plane direction. Hereinafter, the first case 400 and the second case 600 are collectively referred to as a case 900 as appropriate.

ケース９００に外部から平面方向に衝撃が与えられると、第２支持部４３２が第２凹部６３２に衝突する。この際の衝撃によって第２支持部４３２が変形することがある。 When an impact is applied to the case 900 from the outside in the plane direction, the second support portion 432 collides with the second recess 632. The impact at this time may deform the second support portion 432.

その場合、第１支持部４３１が第１凹部６３１に衝突する。第１支持部４３１は第２支持部４３２よりも平面方向の耐衝撃性が大きくなっている。その結果、ケース９００に与えられた平面方向の衝撃が第１支持部４３１によって緩和されやすくなっている。 In that case, the first support portion 431 collides with the first recess 631. The first support portion 431 has a higher impact resistance in the plane direction than the second support portion 432. As a result, the impact in the plane direction given to the case 900 is easily alleviated by the first support portion 431.

これまでに説明したように第２支持部４３２は第１支持部４３１よりも精密に加工が施されている。そのために第２支持部４３２は第１支持部４３１よりも工程が煩雑化されやすくなっている。しかしながら第２支持部４３２のｚ方向の長さＬ８は、第１支持部４３１のｚ方向の長さＬ７よりも短くなっている。そのために第２支持部４３２の形状を加工する工程が簡素化されやすくなっている。 As described above, the second support portion 432 is processed more precisely than the first support portion 431. Therefore, the process of the second support portion 432 is more complicated than that of the first support portion 431. However, the length L8 of the second support portion 432 in the z direction is shorter than the length L7 of the first support portion 431 in the z direction. Therefore, the process of processing the shape of the second support portion 432 is easily simplified.

また第２支持部４３２のｚ方向の長さＬ８が、第１支持部４３１のｚ方向の長さＬ７よりも短くなっている。そのために、第１支持部４３１に第２支持部４３２の加わった第１固定部４３０のｚ方向の高さが抑制されやすくなっている。 Further, the length L8 of the second support portion 432 in the z direction is shorter than the length L7 of the first support portion 431 in the z direction. Therefore, the height of the first fixed portion 430 in which the second support portion 432 is added to the first support portion 431 is easily suppressed in the z direction.

なお、第２固定部４４０と第２収納孔６４０に関しても上記の作用効果と同様の作用効果を奏する。そのために第２固定部４４０と第２収納孔６４０に関する作用効果の記載を省略している。 The second fixing portion 440 and the second storage hole 640 also have the same effect as the above effect. Therefore, the description of the action and effect regarding the second fixing portion 440 and the second storage hole 640 is omitted.

これまでに説明したように電力変換装置５００はエンジンルーム内で車両の進行方向に離間して並ぶ態様で収納されている。 As described above, the power conversion devices 500 are housed in the engine room so as to be spaced apart from each other in the traveling direction of the vehicle.

第５壁部６２１と第８壁部６２４が交差する角に形成された第１収納孔６３０に、第１壁部４２１と第４壁部４２４が交差する角に形成された第１固定部４３０が収納されている。 The first fixed portion 430 formed at the corner where the first wall portion 421 and the fourth wall portion 424 intersect in the first storage hole 630 formed at the corner where the fifth wall portion 621 and the eighth wall portion 624 intersect. Is stored.

第６壁部６２２と第７壁部６２３が交差する角に形成された第２収納孔６４０に、第２壁部４２２と第３壁部４２３が交差する角に形成された第２固定部４４０が収納されている。第１固定部４３０と第２固定部４４０がｘ方向とｙ方向に離間して並んでいる。 The second fixed portion 440 formed at the corner where the second wall portion 422 and the third wall portion 423 intersect in the second storage hole 640 formed at the corner where the sixth wall portion 622 and the seventh wall portion 623 intersect. Is stored. The first fixed portion 430 and the second fixed portion 440 are arranged so as to be separated from each other in the x direction and the y direction.

したがって車両が進行方向に衝突して、ケース９００にｘ方向に衝撃が与えられたとしても、第１固定部４３０と第２固定部４４０がｘ方向に並んでいるために、第１固定部４３０と第２固定部４４０それぞれに与えられる衝撃が緩和されやすくなっている。 Therefore, even if the vehicle collides in the traveling direction and the case 900 is impacted in the x direction, the first fixed portion 430 and the second fixed portion 440 are aligned in the x direction, so that the first fixed portion 430 The impact given to each of the second fixing portion 440 and the second fixing portion 440 is easily alleviated.

これまでに説明したように第２支持部４３２は第１ケース４００と第２ケース６００の平面方向の位置を決める、位置決めの機能を有している。第２支持部４３２を備える第１固定部４３０と第２固定部４４０が平面方向に対して対角線上に形成されている。そのために第１ケース４００と第２ケース６００の位置決めの精度が高まりやすくなっている。 As described above, the second support portion 432 has a positioning function of determining the positions of the first case 400 and the second case 600 in the plane direction. The first fixing portion 430 and the second fixing portion 440 including the second supporting portion 432 are formed diagonally with respect to the plane direction. Therefore, the positioning accuracy of the first case 400 and the second case 600 is likely to be improved.

以上、本開示の好ましい実施形態について説明したが、本開示は上記した実施形態になんら制限されることなく、本開示の主旨を逸脱しない範囲において、種々変形して実施することが可能である。 Although the preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments, and can be variously modified and implemented without departing from the gist of the present disclosure.

（第１の変形例）
図６に示すように第１固定部４３０と第２固定部４４０が第１環状部４２０の内面４２０ｂに連結されていてもよい。第１固定部４３０と第２固定部４４０のうちのどちらか一方が第１環状部４２０の内面４２０ｂに連結され、他方が上端面４２０ａに連結されていてもよい。 (First modification)
As shown in FIG. 6, the first fixing portion 430 and the second fixing portion 440 may be connected to the inner surface 420b of the first annular portion 420. Either one of the first fixed portion 430 and the second fixed portion 440 may be connected to the inner surface 420b of the first annular portion 420, and the other may be connected to the upper end surface 420a.

（第２の変形例）
図７に示すように上端面４２０ａに第１固定部４３０と第２固定部４４０の他に第３固定部４５０がされていてもよい。第３固定部４５０は上端面４２０ａからｚ方向に第２ケース６００に向かって突出した突出形状を成している。 (Second modification)
As shown in FIG. 7, a third fixing portion 450 may be provided on the upper end surface 420a in addition to the first fixing portion 430 and the second fixing portion 440. The third fixing portion 450 has a protruding shape protruding from the upper end surface 420a toward the second case 600 in the z direction.

下端面６２０ａに第１収納孔６３０と第２収納孔６４０の他に第３収納孔が形成されていてもよい。第３収納孔は下端面６２０ａからｚ方向に第１ケース４００から離れる態様で凹んでいる。 In addition to the first storage hole 630 and the second storage hole 640, a third storage hole may be formed on the lower end surface 620a. The third storage hole is recessed from the lower end surface 620a in the z direction away from the first case 400.

第１収納孔６３０に第１固定部４３０が収納され、第２収納孔６４０に第２固定部４４０が収納された状態で、第３収納孔に第３固定部４５０が収納されていてもよい。ケース９００に平面方向に衝撃が与えられたとしても、その衝撃が第１固定部４３０〜第３固定部４５０に与えられるため、第１固定部４３０〜第３固定部４５０それぞれに与えられる衝撃が緩和されやすくなっている。 The first fixing portion 430 may be stored in the first storage hole 630, the second fixing portion 440 may be stored in the second storage hole 640, and the third fixing portion 450 may be stored in the third storage hole. .. Even if an impact is applied to the case 900 in the plane direction, the impact is applied to the first fixed portion 430 to the third fixed portion 450, so that the impact applied to each of the first fixed portions 430 to the third fixed portion 450 is applied. It is easier to be relaxed.

（その他の変形例）
本実施形態では電力変換装置５００が電気自動車用の車載システム１００に含まれる例を示した。しかしながら電力変換装置５００の適用としては特に上記例に限定されない。例えばモータ７００と内燃機関を備えるハイブリッドシステムに電力変換装置５００が含まれる構成を採用することもできる。 (Other variants)
In this embodiment, an example is shown in which the power conversion device 500 is included in the in-vehicle system 100 for an electric vehicle. However, the application of the power converter 500 is not particularly limited to the above example. For example, a configuration in which a power conversion device 500 is included in a hybrid system including a motor 700 and an internal combustion engine can be adopted.

本実施形態では電力変換装置５００に１つのモータ７００の接続される例を示した。しかしながら電力変換装置５００に複数のモータ７００の接続される構成を採用することもできる。この場合、電力変換装置５００はインバータ３００を構成するための３相のスイッチモジュールを複数有する。 In this embodiment, an example in which one motor 700 is connected to the power conversion device 500 is shown. However, it is also possible to adopt a configuration in which a plurality of motors 700 are connected to the power conversion device 500. In this case, the power conversion device 500 has a plurality of three-phase switch modules for forming the inverter 300.

４００…第１ケース、４２１…第１壁部、４２３…第３壁部、４３０…第１固定部、４３１…第１支持部、４３２…第２支持部、４４０…第２固定部、５１０…パワーモジュール、６００…第２ケース、６３０…第１収納孔、６３１…第１凹部、６３１ｂ…第１凹面、６３２…第２凹部、６３２ｂ…第２凹面、６４０…第２収納孔、９００…ケース 400 ... 1st case, 421 ... 1st wall part, 423 ... 3rd wall part, 430 ... 1st fixed part, 431 ... 1st support part, 432 ... 2nd support part, 440 ... 2nd fixed part, 510 ... Power module, 600 ... 2nd case, 630 ... 1st storage hole, 631 ... 1st recess, 631b ... 1st concave surface, 632 ... 2nd concave surface, 632b ... 2nd concave surface, 640 ... 2nd storage hole, 900 ... case

Claims (4)

対向方向で並ぶ第１ケース（４００）と第２ケース（６００）を備えるケース（９００）と、
前記ケースに収納される電気部品（５１０）と、を有し、
前記第１ケースには前記対向方向で前記第１ケースから前記第２ケースに向かって延びる第１支持部（４３１）と、前記第１支持部から前記対向方向に離れる態様で延びる、前記第１支持部より前記対向方向に直交する平面方向の長さの短い第２支持部（４３２）と、を備える固定部（４３０，４４０）が形成されており、
前記第２ケースには前記対向方向で前記第１ケースから離れる態様で凹む第１凹部（６３１）と、前記第１凹部から前記対向方向に離れる態様で凹む、前記第１凹部より前記平面方向の長さの短い第２凹部（６３２）と、を備える収納孔（６３０，６４０）が形成されており、
前記第１凹部に前記第１支持部が収納され、
前記第２凹部に前記第２支持部が収納されている電力変換装置。 A case (900) having a first case (400) and a second case (600) arranged in opposite directions, and a case (900).
It has an electric component (510) housed in the case and
The first case includes a first support portion (431) extending from the first case toward the second case in the opposite direction, and the first support portion extending from the first support portion in the opposite direction. A fixed portion (430, 440) including a second support portion (432) having a shorter length in the plane direction orthogonal to the facing direction than the support portion is formed.
The second case has a first recess (631) that is recessed in the opposite direction away from the first case, and a first recess that is recessed in the opposite direction from the first recess in the plane direction from the first recess. A storage hole (630, 640) including a second recess (632) having a short length is formed.
The first support portion is housed in the first recess.
A power conversion device in which the second support portion is housed in the second recess. 前記第２支持部と前記第２凹部を区画する第２壁面（６３２ｂ）との間の前記平面方向の離間距離が、前記第１支持部と前記第１凹部を区画する第１壁面（６３１ｂ）との間の前記平面方向の離間距離よりも短くなっている請求項１に記載の電力変換装置。 The distance between the second support portion and the second wall surface (632b) that partitions the second recess in the plane direction is the first wall surface (631b) that partitions the first support portion and the first recess. The power conversion device according to claim 1, which is shorter than the distance between the two and the device in the plane direction. 前記固定部は前記第１ケースにおける前記平面方向に沿う第１方向で離間して並ぶ２つの壁部（４２１，４２３）のうちの一方側に位置する第１固定部（４３０）と、２つの前記壁部のうちの他方側に位置する第２固定部（４４０）と、を有し、
前記収納孔は前記第２ケースにおける前記対向方向で前記第１固定部に対向する第１収納孔（６３０）と、前記対向方向で前記第２固定部に対向する第２収納孔（６４０）と、を有し、
前記第１固定部が前記第１収納孔に収納され、
前記第２固定部が前記第２収納孔に収納されている請求項１または２に記載の電力変換装置。 The fixing portion includes a first fixing portion (430) located on one side of two wall portions (421, 423) arranged apart from each other in the first direction along the plane direction in the first case, and two. It has a second fixed portion (440) located on the other side of the wall portion, and has.
The storage holes include a first storage hole (630) facing the first fixing portion in the facing direction in the second case and a second storage hole (640) facing the second fixing portion in the facing direction. Have,
The first fixing portion is housed in the first storage hole,
The power conversion device according to claim 1 or 2, wherein the second fixing portion is housed in the second storage hole. 前記対向方向における前記第２支持部の長さが、前記対向方向における前記第１支持部の長さよりも短くなっている請求項１〜３のいずれか１項に記載の電力変換装置。 The power conversion device according to any one of claims 1 to 3, wherein the length of the second support portion in the opposite direction is shorter than the length of the first support portion in the opposite direction.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1141748A (en) * 1997-07-17 1999-02-12 Sumitomo Wiring Syst Ltd Electric connection case
JPH11191965A (en) * 1997-12-25 1999-07-13 Fuji Electric Co Ltd Power converter
JP2004254479A (en) * 2003-02-21 2004-09-09 Yazaki Corp Waterproof structure of electric junction box
JP2012033827A (en) * 2010-08-02 2012-02-16 Fuji Electric Co Ltd Casing

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1141748A (en) * 1997-07-17 1999-02-12 Sumitomo Wiring Syst Ltd Electric connection case
JPH11191965A (en) * 1997-12-25 1999-07-13 Fuji Electric Co Ltd Power converter
JP2004254479A (en) * 2003-02-21 2004-09-09 Yazaki Corp Waterproof structure of electric junction box
JP2012033827A (en) * 2010-08-02 2012-02-16 Fuji Electric Co Ltd Casing

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