JP7087608B2

JP7087608B2 - Power converter

Info

Publication number: JP7087608B2
Application number: JP2018075475A
Authority: JP
Inventors: 正彦延原
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2018-04-10
Filing date: 2018-04-10
Publication date: 2022-06-21
Anticipated expiration: 2038-04-10
Also published as: JP2019187083A

Description

本発明は、電力変換装置に関する。 The present invention relates to a power conversion device.

電気自動車、ハイブリッド自動車等の車両は、直流電力と交流電力との間で電力変換を行う電力変換装置を搭載している。特許文献１には、電力変換装置として、複数の電子回路基板と、複数の電子回路基板の間に配されたステーとを有するものが開示されている。特許文献１に記載の電力変換装置は、電子回路基板の変形を抑制すべく、電子回路基板における互いに対向する辺を構成する一対の端縁に沿って、前記ステーを配置している。 Vehicles such as electric vehicles and hybrid vehicles are equipped with a power conversion device that converts power between DC power and AC power. Patent Document 1 discloses a power conversion device having a plurality of electronic circuit boards and stays arranged between the plurality of electronic circuit boards. In the power conversion device described in Patent Document 1, the stays are arranged along a pair of edge edges forming opposite sides of the electronic circuit board in order to suppress deformation of the electronic circuit board.

特開２００９－１５９７６７号公報Japanese Unexamined Patent Publication No. 2009-159767

電子回路基板には、電子回路基板と他の電子部品とを電気接続するためのコネクタが実装されることがある。この場合、前記コネクタと相手方コネクタとの接続時等において、コネクタから電子回路基板に力が加わる。 A connector for electrically connecting an electronic circuit board and other electronic components may be mounted on the electronic circuit board. In this case, a force is applied from the connector to the electronic circuit board when the connector is connected to the other connector.

しかしながら、特許文献１に記載の電力変換装置は、電子回路基板がその端縁でのみ前記ステーに支えられており、それ以外の領域は前記ステーに支えられていない。それゆえ、電子回路基板における前記ステーに支えられていない部分にコネクタが実装された場合、コネクタ嵌合時等に電子回路基板に作用する力で電子回路基板が変形するおそれが考えられる。 However, in the power conversion device described in Patent Document 1, the electronic circuit board is supported by the stay only at its edge, and the other regions are not supported by the stay. Therefore, when the connector is mounted on the portion of the electronic circuit board that is not supported by the stay, there is a possibility that the electronic circuit board may be deformed by the force acting on the electronic circuit board when the connector is fitted or the like.

本発明は、かかる課題に鑑みてなされたものであり、電子回路基板の変形を防止しやすい電力変換装置を提供しようとするものである。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a power conversion device that can easily prevent deformation of an electronic circuit board.

本発明の一態様は、電子回路基板（２）と、
前記電子回路基板の上面に実装されるコネクタ（３）と、
前記電子回路基板の下側に配され、前記電子回路基板を支持する支持部材（４）と、を有し、
前記支持部材の少なくとも一部は、前記コネクタと上下方向（Ｚ）に重なる位置に配された重なり部（４０）を有し、
前記支持部材は、上下方向の両側に開口する枠体部（４１）と、両端が前記枠体部に接続されるとともに、少なくとも一部に前記重なり部を有する梁部（４２）と、を有する、電力変換装置（１）にある。
本発明の他の態様は、電子回路基板（２）と、
前記電子回路基板の上面に実装されるコネクタ（３）と、
前記電子回路基板の下側に配され、前記電子回路基板を支持する支持部材（４）と、を有し、
前記支持部材の少なくとも一部は、前記コネクタと上下方向（Ｚ）に重なる位置に配された重なり部（４０）を有し、
前記支持部材は、前記コネクタを締結するコネクタ締結部（４５）を有する、電力変換装置（１）にある。 One aspect of the present invention is an electronic circuit board (2) and
The connector (3) mounted on the upper surface of the electronic circuit board and
It has a support member (4) which is arranged under the electronic circuit board and supports the electronic circuit board.
At least a part of the support member has an overlapping portion (40) arranged at a position overlapping the connector in the vertical direction (Z).
The support member has a frame body portion (41) that opens on both sides in the vertical direction, and a beam portion (42) that is connected to the frame body portion at both ends and has at least a part of the overlapping portion. , In the power converter (1).
Another aspect of the present invention includes an electronic circuit board (2) and
The connector (3) mounted on the upper surface of the electronic circuit board and
It has a support member (4) which is arranged under the electronic circuit board and supports the electronic circuit board.
At least a part of the support member has an overlapping portion (40) arranged at a position overlapping the connector in the vertical direction (Z).
The support member is in a power conversion device (1) having a connector fastening portion (45) for fastening the connector.

本態様の電力変換装置においては、支持部材の少なくとも一部がコネクタと上下方向に重なる位置に配された重なり部を有する。それゆえ、コネクタから電子回路基板側へ力が作用した場合でも、支持部材の重なり部が電子回路基板の変形を抑えることができる。 In the power conversion device of this embodiment, at least a part of the support member has an overlapping portion arranged at a position where it overlaps with the connector in the vertical direction. Therefore, even when a force is applied from the connector to the electronic circuit board side, the overlapping portion of the support member can suppress the deformation of the electronic circuit board.

以上のごとく、前記態様によれば、電子回路基板の変形を防止しやすい電力変換装置を提供することができる。
なお、特許請求の範囲及び課題を解決する手段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、本発明の技術的範囲を限定するものではない。 As described above, according to the above aspect, it is possible to provide a power conversion device that can easily prevent deformation of the electronic circuit board.
The reference numerals in parentheses described in the scope of claims and the means for solving the problem indicate the correspondence with the specific means described in the embodiments described later, and limit the technical scope of the present invention. It's not a thing.

実施形態１における、電力変換装置の側面図。The side view of the power conversion apparatus in Embodiment 1. FIG. 実施形態１における、支持部材、電子回路基板、コネクタの平面図。The plan view of the support member, the electronic circuit board, and the connector in Embodiment 1. FIG. 実施形態１における、コネクタが支持部材に締結されている様子を示す模式的な断面図。FIG. 6 is a schematic cross-sectional view showing a state in which a connector is fastened to a support member in the first embodiment. 図２の、IV－IV線矢視断面図。FIG. 2 is a cross-sectional view taken along the line IV-IV. 実施形態２における、支持部材、電子回路基板、コネクタの平面図。The plan view of the support member, the electronic circuit board, and the connector in Embodiment 2. 実施形態３における、支持部材、電子回路基板、コネクタの平面図。The plan view of the support member, the electronic circuit board, and the connector in Embodiment 3. FIG.

（実施形態１）
電力変換装置の実施形態につき、図１～図４を用いて説明する。
本実施形態の電力変換装置１は、図１に示すごとく、電子回路基板２と、電子回路基板２の上面に実装されるコネクタ３と、電子回路基板２の下側に配され、電子回路基板２を支持する支持部材４と、を有する。図２、図３に示すごとく、支持部材４の少なくとも一部は、コネクタ３と上下方向Ｚに重なる位置に配された重なり部４０を有する。以後、本実施形態について詳説する。 (Embodiment 1)
An embodiment of the power conversion device will be described with reference to FIGS. 1 to 4.
As shown in FIG. 1, the power conversion device 1 of the present embodiment is arranged under the electronic circuit board 2, the connector 3 mounted on the upper surface of the electronic circuit board 2, and the electronic circuit board 2, and is arranged on the lower side of the electronic circuit board 2. It has a support member 4 for supporting 2. As shown in FIGS. 2 and 3, at least a part of the support member 4 has an overlapping portion 40 arranged at a position where it overlaps with the connector 3 in the vertical direction Z. Hereinafter, this embodiment will be described in detail.

なお、本明細書において、電子回路基板２の厚み方向を上下方向Ｚという。そして、上下方向Ｚにおける電子回路基板２に対してコネクタ３が配された側を上側といい、その反対側を下側という。上下の表現は便宜的なものであり、鉛直方向に対する電力変換装置１の配置姿勢を限定するものではない。また、上下方向Ｚに直交する一方向を横方向Ｘといい、上下方向Ｚと横方向Ｘとの双方に直交する方向を縦方向Ｙという。また、図２においては、電子回路基板２及びコネクタ３のそれぞれの外形位置を二点鎖線にて表している。 In the present specification, the thickness direction of the electronic circuit board 2 is referred to as the vertical direction Z. The side where the connector 3 is arranged with respect to the electronic circuit board 2 in the vertical direction Z is referred to as an upper side, and the opposite side is referred to as a lower side. The upper and lower expressions are for convenience and do not limit the arrangement posture of the power conversion device 1 with respect to the vertical direction. Further, one direction orthogonal to the vertical direction Z is referred to as a horizontal direction X, and a direction orthogonal to both the vertical direction Z and the horizontal direction X is referred to as a vertical direction Y. Further, in FIG. 2, the external positions of the electronic circuit board 2 and the connector 3 are represented by alternate long and short dash lines.

本実施形態の電力変換装置１は、例えば、電気自動車やハイブリッド自動車などに搭載され、電源電力を駆動用モータの駆動に必要な駆動用電力に変換するインバータとして用いることができる。 The power conversion device 1 of the present embodiment is mounted on, for example, an electric vehicle or a hybrid vehicle, and can be used as an inverter that converts power supply power into drive power required for driving a drive motor.

図１に示すごとく、電力変換装置１は、電力変換回路を構成する複数の半導体モジュール５と、複数の半導体モジュール５を冷却する冷却器６とからなる積層ユニット１００を有する。各半導体モジュール５は、ＩＧＢＴ等のスイッチング素子やＦＷＤ等のダイオードなどの半導体素子を樹脂モールドしてなる本体部５１と、本体部５１から上側に向かって突出した制御端子５２を有する。各半導体モジュール５の制御端子５２は、後述の駆動基板１１に接続されている。 As shown in FIG. 1, the power conversion device 1 has a laminated unit 100 including a plurality of semiconductor modules 5 constituting a power conversion circuit and a cooler 6 for cooling the plurality of semiconductor modules 5. Each semiconductor module 5 has a main body 51 formed by resin-molding a switching element such as an IGBT or a semiconductor element such as a diode such as a FWD, and a control terminal 52 protruding upward from the main body 51. The control terminal 52 of each semiconductor module 5 is connected to a drive board 11 described later.

冷却器６は、冷媒を縦方向Ｙに流通させる複数の冷却管６１を横方向Ｘに一定間隔で積層するとともに、隣り合う冷却管６１の縦方向Ｙの両端部同士を連結管６２で連結したものである。そして、隣り合う冷却管６１の間に半導体モジュール５の本体部５１が挟持されている。これにより半導体モジュール５の本体部５１は、その両面から冷却される。 In the cooler 6, a plurality of cooling pipes 61 for circulating the refrigerant in the vertical direction Y are laminated in the horizontal direction X at regular intervals, and both ends of the adjacent cooling pipes 61 in the vertical direction Y are connected by a connecting pipe 62. It is a thing. The main body 51 of the semiconductor module 5 is sandwiched between the adjacent cooling pipes 61. As a result, the main body 51 of the semiconductor module 5 is cooled from both sides thereof.

積層ユニット１００は、熱伝導性を有するケース７に収容されている。ケース７は、アルミニウム等の金属からなる。ケース７は、前方壁部７１、後方壁部７２及び底壁部７３を有する。前方壁部７１は、積層ユニット１００における横方向Ｘの一方の端部に配された冷却管６１に面接触している。これにより、冷却器６は、ケース７に熱接触するようにケース７内に配されている。 The laminating unit 100 is housed in a case 7 having thermal conductivity. The case 7 is made of a metal such as aluminum. The case 7 has a front wall portion 71, a rear wall portion 72, and a bottom wall portion 73. The front wall portion 71 is in surface contact with the cooling pipe 61 arranged at one end of the lateral direction X in the laminated unit 100. As a result, the cooler 6 is arranged in the case 7 so as to be in thermal contact with the case 7.

後方壁部７２は、積層ユニット１００における横方向Ｘの前方壁部７１と反対側の端部に配された冷却管６１に対して、所定間隔をあけて横方向Ｘに対向している。底壁部７３は、上下方向Ｚに直交する面状に形成されており、前方壁部７１の下端と後方壁部７２の下端とのそれぞれに接続されている。底壁部７３は、積層ユニット１００に対して上下方向Ｚに対向するよう配されている。 The rear wall portion 72 faces the lateral direction X at a predetermined interval with respect to the cooling pipe 61 arranged at the end opposite to the front wall portion 71 in the lateral direction X in the laminated unit 100. The bottom wall portion 73 is formed in a plane shape orthogonal to the vertical direction Z, and is connected to the lower end of the front wall portion 71 and the lower end of the rear wall portion 72, respectively. The bottom wall portion 73 is arranged so as to face the laminated unit 100 in the vertical direction Z.

ケース７における積層ユニット１００と後方壁部７２との間には、横方向Ｘに弾性変形可能な弾性部材１２が配されている。弾性部材１２は、横方向Ｘに圧縮された状態で、積層ユニット１００と後方壁部７２との間に配され、積層ユニット１００を前方壁部７１側に向かって加圧する。これにより、各半導体モジュール５と冷却管６１との間の接触面積が確保され、半導体モジュール５の冷却性能が向上する。また、積層ユニット１００における前方壁部７１に面接触する冷却管６１と前方壁部７１との接触面積も確保される。 An elastic member 12 that can be elastically deformed in the lateral direction X is arranged between the laminated unit 100 and the rear wall portion 72 in the case 7. The elastic member 12 is arranged between the laminated unit 100 and the rear wall portion 72 in a state of being compressed in the lateral direction X, and pressurizes the laminated unit 100 toward the front wall portion 71 side. As a result, the contact area between each semiconductor module 5 and the cooling pipe 61 is secured, and the cooling performance of the semiconductor module 5 is improved. Further, the contact area between the cooling pipe 61 and the front wall portion 71 in surface contact with the front wall portion 71 in the laminated unit 100 is also secured.

弾性部材１２は、例えば金属板からなる板バネとすることができる。弾性部材１２は、金属等の熱伝導性を有する部材から構成することにより、後方壁部７２は弾性部材１２を介して冷却管６１に熱的に接触し、ケース７の冷却性を向上させることができる。 The elastic member 12 can be, for example, a leaf spring made of a metal plate. Since the elastic member 12 is made of a member having thermal conductivity such as metal, the rear wall portion 72 thermally contacts the cooling pipe 61 via the elastic member 12 to improve the cooling property of the case 7. Can be done.

ケース７における前方壁部７１及び後方壁部７２の上面に前述の支持部材４が配されている。支持部材４は、ケース７内に収容された積層ユニット１００を上側から覆うよう配されている。 The support member 4 described above is arranged on the upper surfaces of the front wall portion 71 and the rear wall portion 72 in the case 7. The support member 4 is arranged so as to cover the laminated unit 100 housed in the case 7 from above.

図２に示すごとく、支持部材４は、枠体部４１と梁部４２とを有する。枠体部４１は、上下方向Ｚの両側に開口する矩形枠体形状である。枠体部４１は、上下方向Ｚから見たときの外形が、上下方向Ｚに直交する縦方向Ｙに短尺である。枠体部４１は、上下方向Ｚから見たときの外形が横方向Ｘに長尺の長方形状となる。枠体部４１は、横方向Ｘに延在するとともに縦方向Ｙに互いに対向する一対の長尺辺部４２１と、縦方向Ｙに延在するとともに横方向Ｘに互いに対向する一対の短尺辺部４２２とを有する。 As shown in FIG. 2, the support member 4 has a frame body portion 41 and a beam portion 42. The frame body portion 41 has a rectangular frame body shape that opens on both sides in the vertical direction Z. The outer shape of the frame body portion 41 when viewed from the vertical direction Z is short in the vertical direction Y orthogonal to the vertical direction Z. The outer shape of the frame body portion 41 when viewed from the vertical direction Z is a long rectangular shape in the horizontal direction X. The frame body portion 41 has a pair of long side portions 421 extending in the horizontal direction X and facing each other in the vertical direction Y, and a pair of short side portions extending in the vertical direction Y and facing each other in the horizontal direction X. It has 422 and.

枠体部４１の一対の短尺辺部４２２には、横方向Ｘにおける枠体部４１の外側に向かって突出する枠体フランジ４２３が形成されている。枠体フランジ４２３には、支持部材４を後述のケース７に固定するためのボルトを挿通するためのコネクタ側挿通孔４２４が形成されている。支持部材４は、枠体フランジ４２３において後述するケース７にボルト締結されることで、ケース７に固定されている。また、枠体部４１における四隅及び、梁部４２における縦方向Ｙの両側の部位には、電子回路基板２を支持部材４にボルト締結するための基板螺合孔４２５が形成されている。基板螺合孔４２５は、上側に開口する雌ネジである。 The pair of short side portions 422 of the frame body portion 41 are formed with a frame body flange 423 that protrudes toward the outside of the frame body portion 41 in the lateral direction X. The frame flange 423 is formed with a connector-side insertion hole 424 for inserting a bolt for fixing the support member 4 to the case 7, which will be described later. The support member 4 is fixed to the case 7 by bolting to the case 7 described later on the frame flange 423. Further, substrate screw holes 425 for bolting the electronic circuit board 2 to the support member 4 are formed at the four corners of the frame body portion 41 and the portions on both sides of the beam portion 42 in the vertical direction Y. The substrate screw hole 425 is a female screw that opens upward.

梁部４２は、その両端が枠体部４１に接続される。すなわち、梁部４２は、いわゆる両持ちの状態で枠体部４１に接続されている。梁部４２は、枠体部４１における縦方向Ｙに対向する一対の長尺辺部４２１に接続されている。枠部は、縦方向Ｙに延在するようまっすぐ形成されている。梁部４２は、枠体部４１における横方向Ｘの中央よりも横方向Ｘの一方側の領域に位置している。 Both ends of the beam portion 42 are connected to the frame body portion 41. That is, the beam portion 42 is connected to the frame body portion 41 in a so-called double-sided state. The beam portion 42 is connected to a pair of long side portions 421 facing the vertical direction Y in the frame body portion 41. The frame portion is formed straight so as to extend in the vertical direction Y. The beam portion 42 is located in a region on one side of the lateral direction X with respect to the center of the lateral direction X in the frame body portion 41.

支持部材４は、梁部４２と枠体部４１との双方に接続される補助部材４３を有する。すなわち、補助部材４３は、いわゆる両持ちの状態で、梁部４２と枠体部４１とに接続されている。補助部材４３は、枠体部４１における梁部４２と対向する短尺辺部４２２のうち、梁部４２に最も近い短尺辺部４２２から延設されている。補助部材４３における横方向Ｘの中央部に位置する分岐部４３１から梁部４２側は、分岐部４３１から二股に分岐した一対の分岐辺４３２を有する。各分岐辺４３２の分岐部４３１と反対側の端部が、梁部４２に接続されている。 The support member 4 has an auxiliary member 43 connected to both the beam portion 42 and the frame body portion 41. That is, the auxiliary member 43 is connected to the beam portion 42 and the frame body portion 41 in a so-called double-sided state. The auxiliary member 43 extends from the short side portion 422 closest to the beam portion 42 among the short side portions 422 facing the beam portion 42 in the frame body portion 41. The beam portion 42 side from the branch portion 431 located at the central portion in the lateral direction X of the auxiliary member 43 has a pair of branch sides 432 that are bifurcated from the branch portion 431. The end of each branch side 432 on the opposite side of the branch portion 431 is connected to the beam portion 42.

支持部材４は、コネクタ３を締結するコネクタ締結部４５を３か所以上に有する。コネクタ締結部４５は、上側に開口する雌ネジである。本実施形態において、コネクタ締結部４５は、梁部４２に２か所、補助部材４３に１か所の計３か所に形成されている。梁部４２に形成されたコネクタ締結部４５のそれぞれは、梁部４２における分岐辺４３２の延長線上に形成されている。また、補助部材４３に形成されたコネクタ締結部４５は、一対の分岐辺４３２の分岐部４３１に形成されている。 The support member 4 has three or more connector fastening portions 45 for fastening the connector 3. The connector fastening portion 45 is a female screw that opens upward. In the present embodiment, the connector fastening portions 45 are formed at two locations on the beam portion 42 and one location on the auxiliary member 43, for a total of three locations. Each of the connector fastening portions 45 formed on the beam portion 42 is formed on an extension line of the branch side 432 in the beam portion 42. Further, the connector fastening portion 45 formed on the auxiliary member 43 is formed on the branch portion 431 of the pair of branch sides 432.

支持部材４における枠体部４１とコネクタ締結部４５とをつなぐ部分は、枠体部４１とコネクタ締結部４５とを最短距離で接続するよう形成されている。すなわち、梁部４２における枠体部４１とコネクタ締結部４５とをつなぐ部分は、枠体部４１とコネクタ締結部４５との間に形成されるあらゆる経路のうち、最短の経路に沿って形成されている。 The portion of the support member 4 that connects the frame body portion 41 and the connector fastening portion 45 is formed so as to connect the frame body portion 41 and the connector fastening portion 45 at the shortest distance. That is, the portion of the beam portion 42 connecting the frame body portion 41 and the connector fastening portion 45 is formed along the shortest path among all the paths formed between the frame body portion 41 and the connector fastening portion 45. ing.

支持部材４のすべてのコネクタ締結部４５の上面は、同一平面上に形成されている。すべてのコネクタ締結部４５の上面は、上下方向Ｚに直交する面上に形成されているとともに、支持部材４の上面に配された電子回路基板２の下面と平行に形成されている。 The upper surfaces of all the connector fastening portions 45 of the support member 4 are formed on the same plane. The upper surfaces of all the connector fastening portions 45 are formed on a surface orthogonal to the vertical direction Z, and are formed parallel to the lower surface of the electronic circuit board 2 arranged on the upper surface of the support member 4.

支持部材４は、上下方向Ｚから見たとき、すべてのコネクタ締結部４５同士を直線で結んでなる仮想図形の外形の内側空間を埋めるよう形成された補強部４４を有する。本実施形態において補強部４４は、上下方向Ｚから見たとき、３つのコネクタ締結部４５を相互に直線で結んだ三角形状の外形の内側空間を埋めるよう形成されている。 The support member 4 has a reinforcing portion 44 formed so as to fill the inner space of the outer shape of the virtual figure formed by connecting all the connector fastening portions 45 with each other when viewed from the vertical direction Z. In the present embodiment, the reinforcing portion 44 is formed so as to fill the inner space of the triangular outer shape in which the three connector fastening portions 45 are connected to each other by a straight line when viewed from the vertical direction Z.

図２、図４に示すごとく、補強部４４には、その強度を確保するためのリブ４４１が形成されている。本実施形態において、リブ４４１は、一対の分岐辺４３２により構成されている。リブ４４１は、補強部４４の端縁に形成されており、上側に突出する凸状に形成されている。 As shown in FIGS. 2 and 4, the reinforcing portion 44 is formed with a rib 441 for ensuring its strength. In this embodiment, the rib 441 is composed of a pair of branch sides 432. The rib 441 is formed on the edge of the reinforcing portion 44, and is formed in a convex shape protruding upward.

図２に示すごとく、梁部４２の少なくとも一部に、コネクタ３と上下方向Ｚに重なる位置に配された重なり部４０が存在する。また、補助部材４３の少なくとも一部は、重なり部４０を構成する補助重なり部４３０を有する。重なり部４０及び補助重なり部４３０のそれぞれは、コネクタ３及び電子回路基板２のそれぞれと当接している。なお、これに限られず、例えば重なり部４０及び補助重なり部４３０と電子回路基板２との間に若干の間隙が形成されていてもよい。この場合、電子回路基板２がコネクタ３に押されて撓もうとしたときに、電子回路基板２が大きく撓むことなく、重なり部４０又は補助重なり部４３０によって支えられる。 As shown in FIG. 2, at least a part of the beam portion 42 has an overlapping portion 40 arranged at a position overlapping the connector 3 in the vertical direction Z. Further, at least a part of the auxiliary member 43 has an auxiliary overlapping portion 430 constituting the overlapping portion 40. Each of the overlapping portion 40 and the auxiliary overlapping portion 430 is in contact with each of the connector 3 and the electronic circuit board 2. Not limited to this, for example, a slight gap may be formed between the overlapping portion 40 and the auxiliary overlapping portion 430 and the electronic circuit board 2. In this case, when the electronic circuit board 2 is pushed by the connector 3 and tries to bend, the electronic circuit board 2 is supported by the overlapping portion 40 or the auxiliary overlapping portion 430 without being greatly bent.

図２において、梁部４２におけるコネクタ３の外形の内側の領域が補助重なり部４３０以外の重なり部４０であり、補助部材４３におけるコネクタ３の外形の内側の領域が補助重なり部４３０である。梁部４２は、そこに形成された２つのコネクタ締結部４５周辺に重なり部４０を有する。補助部材４３は、一対の分岐辺４３２及び補助部材４３に形成されたコネクタ締結部４５の周辺に、補助重なり部４３０を有する。 In FIG. 2, the area inside the outer shape of the connector 3 in the beam portion 42 is the overlapping portion 40 other than the auxiliary overlapping portion 430, and the area inside the outer shape of the connector 3 in the auxiliary member 43 is the auxiliary overlapping portion 430. The beam portion 42 has an overlapping portion 40 around the two connector fastening portions 45 formed therein. The auxiliary member 43 has an auxiliary overlapping portion 430 around the pair of branch sides 432 and the connector fastening portion 45 formed on the auxiliary member 43.

図１に示すごとく、支持部材４の上面に電子回路基板２がボルト締結されており、支持部材４の下面に前述の駆動基板１１がボルト締結されている。すなわち、支持部材４には、その上下方向Ｚの両面に一対の基板が固定されている。支持部材４の下面に固定された駆動基板１１は、複数の半導体モジュール５をスイッチング駆動させるための駆動回路を有するとともに、比較的高い電圧が印加される基板である。一方、電子回路基板２は、各種車両情報を基にスイッチング駆動の状態を制御するとともに、比較的低い電圧が印加される基板である。 As shown in FIG. 1, the electronic circuit board 2 is bolted to the upper surface of the support member 4, and the drive board 11 is bolted to the lower surface of the support member 4. That is, a pair of substrates are fixed to both sides of the support member 4 in the vertical direction Z. The drive board 11 fixed to the lower surface of the support member 4 has a drive circuit for switching and driving a plurality of semiconductor modules 5, and is a board to which a relatively high voltage is applied. On the other hand, the electronic circuit board 2 is a board that controls the state of switching drive based on various vehicle information and is applied with a relatively low voltage.

図２にその外形を示すごとく、電子回路基板２は、長方形板状を呈しており、その端縁が支持部材４の枠体部４１に沿うよう形成されている。図３に示すごとく、電子回路基板２には、支持部材４に形成されたコネクタ締結部４５に上下方向Ｚに重なる位置に基板側挿通孔２１が形成されている。そして、電子回路基板２は、ボルトＢを基板側挿通孔２１に挿通させるとともに基板螺合孔４２５に螺合させることにより、支持部材４に支持される。 As shown in FIG. 2, the electronic circuit board 2 has a rectangular plate shape, and its edge is formed along the frame portion 41 of the support member 4. As shown in FIG. 3, in the electronic circuit board 2, a substrate-side insertion hole 21 is formed at a position overlapping the connector fastening portion 45 formed on the support member 4 in the vertical direction Z. Then, the electronic circuit board 2 is supported by the support member 4 by inserting the bolt B into the substrate side insertion hole 21 and screwing it into the substrate screw hole 425.

図１、図３に示すごとく、電子回路基板２の上面に、コネクタ３が搭載されている。コネクタ３は、ＥＣＵ等の外部制御装置に接続される。図３に示すごとく、コネクタ３は、上側に向かって開口するとともに、コネクタ３に接続される図示しない相手方コネクタが、コネクタ３の上側から下側に向かって接続されるよう構成されている。すなわち、コネクタ３と相手方コネクタとは、上下方向Ｚに嵌合されるよう構成されている。 As shown in FIGS. 1 and 3, the connector 3 is mounted on the upper surface of the electronic circuit board 2. The connector 3 is connected to an external control device such as an ECU. As shown in FIG. 3, the connector 3 is configured to open upward, and a mating connector (not shown) connected to the connector 3 is connected from the upper side to the lower side of the connector 3. That is, the connector 3 and the mating connector are configured to be fitted in the vertical direction Z.

図１、図３に示すごとく、コネクタ３の下端部には、横方向Ｘに突出するコネクタフランジ３１が形成されている。コネクタフランジ３１は、コネクタ締結部４５に上下方向Ｚに重なる位置に形成されている。そして、コネクタフランジ３１には、ボルトＢを挿通するコネクタ側挿通孔３１１が形成されている。コネクタ３は、ボルトＢを、コネクタフランジ３１のコネクタ側挿通孔３１１及び電子回路基板２の基板側挿通孔２１に挿通するとともにコネクタ締結部４５に螺合させることにより、支持部材４に固定されている。これにより、コネクタ３と支持部材４との間に、電子回路基板２の一部が位置している。 As shown in FIGS. 1 and 3, a connector flange 31 projecting in the lateral direction X is formed at the lower end of the connector 3. The connector flange 31 is formed at a position overlapping the connector fastening portion 45 in the vertical direction Z. The connector flange 31 is formed with a connector-side insertion hole 311 through which the bolt B is inserted. The connector 3 is fixed to the support member 4 by inserting the bolt B into the connector side insertion hole 311 of the connector flange 31 and the substrate side insertion hole 21 of the electronic circuit board 2 and screwing it into the connector fastening portion 45. There is. As a result, a part of the electronic circuit board 2 is located between the connector 3 and the support member 4.

図１、図３に示すごとく、コネクタ３には、外周から、軸シール３２が配されている。図３に示すごとく、軸シール３２は、上下方向Ｚに直交する径方向におけるコネクタ３と、他の部品との水密性を図るためのものである。本実施形態において、軸シール３２は、電力変換装置１のカバー１０に形成された開口部１０１の内周面と、コネクタ３の外周面との間をシールしている。 As shown in FIGS. 1 and 3, a shaft seal 32 is arranged on the connector 3 from the outer periphery. As shown in FIG. 3, the shaft seal 32 is for ensuring watertightness between the connector 3 in the radial direction orthogonal to the vertical direction Z and other parts. In the present embodiment, the shaft seal 32 seals between the inner peripheral surface of the opening 101 formed in the cover 10 of the power conversion device 1 and the outer peripheral surface of the connector 3.

図２に示すごとく、上下方向Ｚから見たとき、すべてのコネクタ締結部４５同士を直線で結んでなる仮想図形の外形の内側に、軸シール３２の中心が位置している。上下方向Ｚから見たとき、軸シール３２の中心は、補強部４４に重なる位置にある。 As shown in FIG. 2, when viewed from the vertical direction Z, the center of the shaft seal 32 is located inside the outer shape of the virtual figure formed by connecting all the connector fastening portions 45 with each other by a straight line. When viewed from the vertical direction Z, the center of the shaft seal 32 is located at a position overlapping the reinforcing portion 44.

次に本実施形態の作用効果につき、説明する。
本実施形態の電力変換装置１においては、支持部材４の少なくとも一部がコネクタ３と上下方向Ｚに重なる位置に配された重なり部４０を有する。それゆえ、コネクタ３から電子回路基板２側へ力が作用した場合でも、支持部材４の重なり部４０が電子回路基板２の変形を抑えることができる。 Next, the action and effect of this embodiment will be described.
The power conversion device 1 of the present embodiment has an overlapping portion 40 arranged at a position where at least a part of the support member 4 overlaps the connector 3 in the vertical direction Z. Therefore, even when a force is applied from the connector 3 to the electronic circuit board 2 side, the overlapping portion 40 of the support member 4 can suppress the deformation of the electronic circuit board 2.

また、コネクタ３は、上側に向かって開口するとともに、コネクタ３に接続される相手方コネクタが、コネクタ３の上側から下側に向かって接続されるよう構成されている。それゆえ、相手方コネクタをコネクタ３に嵌合させる際に、コネクタ３から電子回路基板２側へ、より力が作用しやすい構成となるが、本実施形態においては、前述のごとく支持部材４が重なり部４０を有するため、電子回路基板２の変形を効果的に抑制できる。 Further, the connector 3 is configured to open toward the upper side, and the mating connector connected to the connector 3 is connected from the upper side to the lower side of the connector 3. Therefore, when the mating connector is fitted to the connector 3, a force is more likely to be applied from the connector 3 to the electronic circuit board 2, but in the present embodiment, the support members 4 overlap each other as described above. Since the portion 40 is provided, the deformation of the electronic circuit board 2 can be effectively suppressed.

また、支持部材４は、上下方向Ｚの両側に開口する枠体部４１と、両端が枠体部４１に接続されるとともに、少なくとも一部に重なり部４０を有する梁部４２と、を有する。すなわち、重なり部４０は、枠体部４１に対していわゆる両持ちの状態で接続された梁部４２に形成されている。それゆえ、支持部材４全体の剛性を高めることができる。それゆえ、コネクタ３から電子回路基板２側へ作用する力を梁部４２が受ける構造であっても、梁部４２が撓むことを防止することができる。 Further, the support member 4 has a frame body portion 41 that opens on both sides in the vertical direction Z, and a beam portion 42 that is connected to the frame body portion 41 at both ends and has at least a partially overlapped portion 40. That is, the overlapping portion 40 is formed in the beam portion 42 connected to the frame body portion 41 in a so-called double-sided state. Therefore, the rigidity of the entire support member 4 can be increased. Therefore, even if the beam portion 42 receives a force acting from the connector 3 to the electronic circuit board 2 side, it is possible to prevent the beam portion 42 from bending.

また、枠体部４１は、上下方向Ｚから見たときの外形が、縦方向Ｙに短尺であり、梁部４２は、縦方向Ｙに延在するよう形成されている。それゆえ、梁部４２の長さを短くしやすい。これによっても、梁部４２の強度を確保でき、コネクタ３から電子回路基板２側へ作用する力によって梁部４２が撓むことを防止しやすい。また、梁部４２の剛性を確保しながら、梁部４２の軽量化、梁部４２の材料費削減を図ることができる。また、梁部４２が短くなることにより、その扱いが容易になり、支持部材４の生産性向上につながる。 Further, the outer shape of the frame body portion 41 when viewed from the vertical direction Z is short in the vertical direction Y, and the beam portion 42 is formed so as to extend in the vertical direction Y. Therefore, it is easy to shorten the length of the beam portion 42. This also ensures the strength of the beam portion 42, and it is easy to prevent the beam portion 42 from bending due to the force acting from the connector 3 to the electronic circuit board 2 side. Further, while ensuring the rigidity of the beam portion 42, it is possible to reduce the weight of the beam portion 42 and the material cost of the beam portion 42. Further, since the beam portion 42 is shortened, it becomes easy to handle the beam portion 42, which leads to an improvement in the productivity of the support member 4.

また、支持部材４は、梁部４２と枠体部４１との双方に接続される補助部材４３を有し、補助部材４３の少なくとも一部は、重なり部４０を構成する補助重なり部４３０を有する。このように、梁部４２に形成された重なり部４０に加え、補助部材４３に形成された補助重なり部４３０が、コネクタ３側から作用する力を受けることができるため、一層コネクタ３から電子回路基板２側へ作用する力に対する支持部材４の耐久性を向上させることができる。 Further, the support member 4 has an auxiliary member 43 connected to both the beam portion 42 and the frame body portion 41, and at least a part of the auxiliary member 43 has an auxiliary overlapping portion 430 constituting the overlapping portion 40. .. As described above, in addition to the overlapping portion 40 formed on the beam portion 42, the auxiliary overlapping portion 430 formed on the auxiliary member 43 can receive the force acting from the connector 3 side, so that the electronic circuit is further provided from the connector 3. It is possible to improve the durability of the support member 4 against the force acting on the substrate 2 side.

また、上下方向Ｚから見たとき、梁部４２は、枠体部４１の中心からずれた位置に配されており、補助部材４３は、枠体部４１における梁部４２と対向する部位のうち、梁部４２に最も近い部位から延設されている。それゆえ、補助部材４３の長さを短くしやすい。これにより、補助部材４３の強度を確保できる。それゆえ、補助部材４３が撓むことを防止しやすいとともに、支持部材４全体の剛性を確保しやすい。 Further, when viewed from the vertical direction Z, the beam portion 42 is arranged at a position deviated from the center of the frame body portion 41, and the auxiliary member 43 is among the portions of the frame body portion 41 facing the beam portion 42. , It extends from the part closest to the beam portion 42. Therefore, it is easy to shorten the length of the auxiliary member 43. As a result, the strength of the auxiliary member 43 can be ensured. Therefore, it is easy to prevent the auxiliary member 43 from bending, and it is easy to secure the rigidity of the entire support member 4.

また、支持部材４は、コネクタ３を締結するコネクタ締結部４５を有する。それゆえ、コネクタ３から電子回路基板２側へ作用する力は、支持部材４のコネクタ締結部４５によって確実に受け止められる。それゆえ、電子回路基板２の変形を抑制しやすい。 Further, the support member 4 has a connector fastening portion 45 for fastening the connector 3. Therefore, the force acting from the connector 3 to the electronic circuit board 2 side is reliably received by the connector fastening portion 45 of the support member 4. Therefore, it is easy to suppress the deformation of the electronic circuit board 2.

また、梁部４２における枠体部４１とコネクタ締結部４５とをつなぐ部分は、枠体部４１とコネクタ締結部４５とを最短距離で接続するよう形成されている。それゆえ、梁部４２におけるコネクタ３側からの荷重を受けやすいコネクタ締結部４５から、梁部４２までの距離を短くすることができる。これによっても、コネクタ３側から作用する力により、梁部４２が撓むことを防止しやすい。また、梁部４２を短くすることで梁部４２の軽量化も図れる。さらに、梁部４２におけるコネクタ締結部４５から枠体部４１までの距離を短くすることにより、このコネクタ締結部４５に接続されるコネクタ３に冷熱ストレスが作用することを抑制しやすい。すなわち、熱の変化に伴う梁部４２におけるコネクタ締結部４５から枠体部４１までの部位の熱膨張又は熱収縮を小さくすることができるため、このコネクタ締結部４５に接続されたコネクタ３に、冷熱ストレスがかかりにくい。 Further, the portion of the beam portion 42 that connects the frame body portion 41 and the connector fastening portion 45 is formed so as to connect the frame body portion 41 and the connector fastening portion 45 at the shortest distance. Therefore, the distance from the connector fastening portion 45 of the beam portion 42, which is easily loaded from the connector 3 side, to the beam portion 42 can be shortened. This also makes it easy to prevent the beam portion 42 from bending due to the force acting from the connector 3 side. Further, by shortening the beam portion 42, the weight of the beam portion 42 can be reduced. Further, by shortening the distance from the connector fastening portion 45 of the beam portion 42 to the frame body portion 41, it is easy to suppress the action of thermal stress on the connector 3 connected to the connector fastening portion 45. That is, since it is possible to reduce the thermal expansion or thermal contraction of the portion from the connector fastening portion 45 to the frame body portion 41 in the beam portion 42 due to the change in heat, the connector 3 connected to the connector fastening portion 45 can be connected to the connector 3. Less likely to be subjected to cold stress.

また、支持部材４は、３か所以上にコネクタ締結部４５を有する。それゆえ、コネクタ３から電子回路基板２側へ作用する力を、３か所以上のコネクタ締結部４５に分散して受けることができるため、電子回路基板２及び支持部材４の変形を防止しやすい。また、コネクタ３における３か所以上において支持部材４のコネクタ締結部４５に固定することにより、コネクタ３を安定して支持部材４に締結しやすい。 Further, the support member 4 has connector fastening portions 45 at three or more places. Therefore, since the force acting from the connector 3 to the electronic circuit board 2 side can be distributed and received by the connector fastening portions 45 at three or more places, it is easy to prevent the electronic circuit board 2 and the support member 4 from being deformed. .. Further, by fixing the connector 3 to the connector fastening portion 45 of the support member 4 at three or more places, the connector 3 can be stably fastened to the support member 4.

また、上下方向Ｚから見たとき、すべてのコネクタ締結部４５同士を直線で結んでなる仮想図形の外形の内側に、軸シール３２の中心が位置している。それゆえ、シールに嵌合する際に、コネクタ３から電子回路基板２側に作用する力が、複数のコネクタ締結部４５に均等にかかる。これによっても、コネクタ３側からの力により支持部材４が変形することを防止しやすい。 Further, when viewed from the vertical direction Z, the center of the shaft seal 32 is located inside the outer shape of the virtual figure formed by connecting all the connector fastening portions 45 with a straight line. Therefore, the force acting on the electronic circuit board 2 side from the connector 3 when fitting to the seal is evenly applied to the plurality of connector fastening portions 45. This also makes it easy to prevent the support member 4 from being deformed by the force from the connector 3 side.

また、コネクタ３と支持部材４との間に、電子回路基板２の一部が位置しており、支持部材４のすべてのコネクタ締結部４５の上面は、同一平面上に形成されている。それゆえ、電子回路基板２が、同一平面上に形成されたコネクタ締結部４５の上面に安定して固定される。一方、複数のコネクタ締結部４５の上面の位置が上下方向Ｚにずれている場合、電子回路基板２にねじれ応力が発生したり、電子回路基板２が回転して位置決めし難くなったりする。 Further, a part of the electronic circuit board 2 is located between the connector 3 and the support member 4, and the upper surfaces of all the connector fastening portions 45 of the support member 4 are formed on the same plane. Therefore, the electronic circuit board 2 is stably fixed to the upper surface of the connector fastening portion 45 formed on the same plane. On the other hand, when the positions of the upper surfaces of the plurality of connector fastening portions 45 are displaced in the vertical direction Z, torsional stress is generated in the electronic circuit board 2, or the electronic circuit board 2 rotates and becomes difficult to position.

また、支持部材４は、上下方向Ｚから見たとき、すべてのコネクタ締結部４５同士を直線で結んでなる仮想図形の外形の内側空間を埋めるよう形成された補強部４４を有する。すなわち、コネクタ３から作用する力が集中しやすい部位に支持部材４の一部が形成されている。それゆえ、支持部材４におけるコネクタ３から作用する力が集中しやすい部位の剛性を高めることができる。 Further, the support member 4 has a reinforcing portion 44 formed so as to fill the inner space of the outer shape of the virtual figure formed by connecting all the connector fastening portions 45 with each other when viewed from the vertical direction Z. That is, a part of the support member 4 is formed at a portion where the force acting from the connector 3 is likely to be concentrated. Therefore, it is possible to increase the rigidity of the portion of the support member 4 where the force acting from the connector 3 is likely to be concentrated.

また、補強部４４には、リブ４４１が形成されている。それゆえ、補強部４４の強度を一層確保しやすい。さらに、コネクタ３の近傍に配される補強部４４の表面積を確保できるため、コネクタ３から受熱する熱を放熱しやすい。 Further, a rib 441 is formed in the reinforcing portion 44. Therefore, it is easier to secure the strength of the reinforcing portion 44. Further, since the surface area of the reinforcing portion 44 arranged in the vicinity of the connector 3 can be secured, the heat received from the connector 3 can be easily dissipated.

また、電力変換装置１は、熱伝導性を有するケース７と、ケース７に熱接触するようにケース７内に配された冷却器６とを更に有し、支持部材４は、ケース７に固定されている。それゆえ、コネクタ３の熱を、支持部材４、ケース７を介して冷却器６に放熱することができる。 Further, the power conversion device 1 further has a case 7 having thermal conductivity and a cooler 6 arranged in the case 7 so as to be in thermal contact with the case 7, and the support member 4 is fixed to the case 7. Has been done. Therefore, the heat of the connector 3 can be dissipated to the cooler 6 via the support member 4 and the case 7.

以上のごとく、本実施形態によれば、電子回路基板２の変形を防止しやすい電力変換装置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 that can easily prevent the deformation of the electronic circuit board 2.

（実施形態２）
本実施形態は、図５に示すごとく、実施形態１に対して、コネクタ３及び支持部材４の形状を変更した実施形態である。 (Embodiment 2)
As shown in FIG. 5, the present embodiment is an embodiment in which the shapes of the connector 3 and the support member 4 are changed with respect to the first embodiment.

本実施形態において、支持部材４には、補助部材（図２等の符号４３参照）及び補強部（図２等の符号４４参照）が形成されていない。そして、梁部４２の長手方向における中央部に１つのコネクタ締結部４５が形成されている。また、コネクタ３は、梁部４２と上下方向Ｚに重なるよう配されているとともに、上下方向Ｚから見たときの中央に、コネクタ３を支持部材４に締結するためのボルトを挿通するための図示しないコネクタ側挿通孔を有する。 In the present embodiment, the support member 4 is not formed with an auxiliary member (see reference numeral 43 in FIG. 2 or the like) and a reinforcing portion (see reference numeral 44 in FIG. 2 or the like). Then, one connector fastening portion 45 is formed at the central portion of the beam portion 42 in the longitudinal direction. Further, the connector 3 is arranged so as to overlap the beam portion 42 in the vertical direction Z, and a bolt for fastening the connector 3 to the support member 4 is inserted in the center when viewed from the vertical direction Z. It has a connector side insertion hole (not shown).

その他は、実施形態１と同様である。
なお、実施形態２以降において用いた符号のうち、既出の実施形態において用いた符号と同一のものは、特に示さない限り、既出の実施形態におけるものと同様の構成要素等を表す。 Others are the same as those in the first embodiment.
In addition, among the codes used in the second and subsequent embodiments, the same codes as those used in the above-mentioned embodiments represent the same components and the like as those in the above-mentioned embodiments, unless otherwise specified.

本実施形態においても、実施形態１と共通する構成により、実施形態１と同様の作用効果を奏する。 Also in the present embodiment, the same operation and effect as that of the first embodiment can be obtained by the configuration common to the first embodiment.

（実施形態３）
本実施形態は、図６に示すごとく、実施形態１に対して、補強部（図２等の符号４４参照）を無くした実施形態である。 (Embodiment 3)
As shown in FIG. 6, the present embodiment is an embodiment in which the reinforcing portion (see reference numeral 44 in FIG. 2 and the like) is eliminated from the first embodiment.

補助部材４３は、梁部４２における縦方向Ｙの中央部と、一対の短尺辺部４２２のうちの梁部４２に近い側の短尺辺部４２２における縦方向Ｙの中央部と、に接続されている。補助部材４３は、縦方向Ｙにまっすぐ形成されている。
その他は、実施形態１と同様である。 The auxiliary member 43 is connected to a central portion in the vertical direction Y in the beam portion 42 and a central portion in the vertical direction Y in the short side portion 422 on the side closer to the beam portion 42 of the pair of short side portions 422. There is. The auxiliary member 43 is formed straight in the vertical direction Y.
Others are the same as those in the first embodiment.

本実施形態においても、実施形態１と共通する構成により、実施形態１と同様の作用効果を有する。 Also in this embodiment, it has the same function and effect as that of the first embodiment due to the configuration common to that of the first embodiment.

本発明は、前記各実施形態に限定されるものではなく、その要旨を逸脱しない範囲において種々の実施形態に適用することが可能である。例えば、前記各実施形態においては、梁部材を１つとしたが、梁部材を複数形成してもよい。また、実施形態１、３においては、補助部材を１つとしたが、補助部材を複数形成してもよい。また、前記各実施形態において、枠体部は、上下方向Ｚから見た外形が長方形状となる例を示したが、これに限られず、円形、楕円形、多角形、等、別の形状としてもよい。 The present invention is not limited to each of the above embodiments, and can be applied to various embodiments without departing from the gist thereof. For example, in each of the above embodiments, one beam member is used, but a plurality of beam members may be formed. Further, in the first and third embodiments, one auxiliary member is used, but a plurality of auxiliary members may be formed. Further, in each of the above-described embodiments, the frame portion has an example in which the outer shape seen from the vertical direction Z is rectangular, but the present invention is not limited to this, and the frame portion may have another shape such as a circular shape, an elliptical shape, a polygonal shape, or the like. May be good.

１電力変換装置
２電子回路基板
３コネクタ
４支持部材
４０重なり部
Ｚ上下方向 1 Power converter 2 Electronic circuit board 3 Connector 4 Support member 40 Overlapping part Z Vertical direction

Claims

Electronic circuit board (2) and
The connector (3) mounted on the upper surface of the electronic circuit board and
It has a support member (4) which is arranged under the electronic circuit board and supports the electronic circuit board.
At least a part of the support member has an overlapping portion (40) arranged at a position overlapping the connector in the vertical direction (Z).
The support member has a frame body portion (41) that opens on both sides in the vertical direction, and a beam portion (42) that is connected to the frame body portion at both ends and has at least a part of the overlapping portion. , Power converter (1).

The first aspect of claim 1 , wherein the frame body portion has an outer shape that is short in one direction (Y) when viewed from the vertical direction, and the beam portion is formed so as to extend in the one direction. Power converter.

The support member has an auxiliary member (43) connected to both the beam portion and the frame body portion, and at least a part of the auxiliary member is an auxiliary overlapping portion (430) constituting the overlapping portion. The power conversion device according to claim 1 or 2 .

When viewed from the vertical direction, the beam portion is arranged at a position deviated from the center of the frame body portion, and the auxiliary member is the beam among the portions of the frame body portion facing the beam portion. The power conversion device according to claim 3 , which extends from the portion closest to the portion.

The power conversion device according to any one of claims 1 to 4 , wherein the support member has a connector fastening portion (45) for fastening the connector.

Electronic circuit board (2) and
The connector (3) mounted on the upper surface of the electronic circuit board and
It has a support member (4) which is arranged under the electronic circuit board and supports the electronic circuit board.
At least a part of the support member has an overlapping portion (40) arranged at a position overlapping the connector in the vertical direction (Z).
The support member is a power conversion device (1) having a connector fastening portion (45) for fastening the connector .

The support member has a frame body portion (41) that opens on both sides in the vertical direction, and a beam portion (42) that is connected to the frame body portion at both ends and has at least a part of the overlapping portion. death,
The electric power according to claim 5 or 6 , wherein the portion of the support member connecting the frame body portion and the connector fastening portion is formed so as to connect the frame body portion and the connector fastening portion at the shortest distance. Converter.

The power conversion device according to any one of claims 5 to 7, wherein the support member has the connector fastening portions at three or more places.

The connector is provided with a shaft seal (32) for ensuring watertightness with other parts in the radial direction orthogonal to the vertical direction, and when viewed from the vertical direction, all the connector fastening portions are linearly connected to each other. The power conversion device according to claim 8 , wherein the center of the shaft seal is located inside the outer shape of the virtual figure connected by.

8. Claim 8 in which a part of the electronic circuit board is located between the connector and the support member, and the upper surfaces of all the connector fastening portions of the support member are formed on the same plane. Or the power conversion device according to 9 .

8. The support member has a reinforcing portion (44) formed so as to fill an inner space of an outer shape of a virtual figure formed by connecting all the connector fastening portions with a straight line when viewed from a vertical direction. 10. The power conversion device according to any one of 10.

The power conversion device according to claim 11 , wherein a rib (441) is formed in the reinforcing portion.

One of claims 1 to 12 , wherein the connector opens upward and the mating connector connected to the connector is connected from the upper side to the lower side of the connector. The power converter described in.

The power conversion device further includes a case (7) having thermal conductivity and a cooler (6) arranged in the case so as to be in thermal contact with the case, and the support member is the case. The power conversion device according to any one of claims 1 to 13, which is fixed to the above.