JP4089910B2 - Automotive power converter - Google Patents

Automotive power converter Download PDF

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JP4089910B2
JP4089910B2 JP2005002369A JP2005002369A JP4089910B2 JP 4089910 B2 JP4089910 B2 JP 4089910B2 JP 2005002369 A JP2005002369 A JP 2005002369A JP 2005002369 A JP2005002369 A JP 2005002369A JP 4089910 B2 JP4089910 B2 JP 4089910B2
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power
control board
power supply
supply board
case
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JP2006191765A (en
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浩史 山渕
祐司 蔵本
誠司 石橋
泰介 岩切
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Mitsubishi Electric Corp
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Description

この発明は、電源であるバッテリと車両走行用の電動機との間に接続され、電気自動車に搭載される自動車用電力変換装置に関するものである。 The present invention is connected between the battery and the vehicle traveling motor for a power, it relates to an automotive power conversion device mounted in an electric vehicle.

従来、制御回路装置を搭載した制御基板と電源回路を搭載した電源基板とを独立に作成し、電源基板については、同一配線パターンで定格の異なる回路素子を搭載した複数種類の電源基板の何れか一種が取り付けられると共に、電源基板を、主回路が搭載されている主回路基板にコネクタで嵌合されたインバータ装置が知られている（例えば、特許文献１参照）。
このものの場合、電源基板が制御基板と独立しているので、制御基板とは無関係に、電源基板だけの変更で済むため、制御基板については共有が可能なため、コストダウンが図れるといった効果がある。 Conventionally, a control board on which a control circuit device is mounted and a power board on which a power circuit is mounted are created independently. There is known an inverter device in which a type is attached and a power supply board is fitted to a main circuit board on which a main circuit is mounted with a connector (for example, see Patent Document 1).
In this case, since the power supply board is independent of the control board, it is only necessary to change the power supply board regardless of the control board, and the control board can be shared, so that the cost can be reduced. .

特許第３２７０１８６号公報Japanese Patent No. 3270186

しかしながら、このインバータ装置では、電源基板に搭載されるトランスは、鉄やフェライト等の比較的質量の大きな素材が用いられており、電源基板は、制御基板よりも、より強い耐振設計が要求されるものの、それに対する対策がなされていないという問題点があった。   However, in this inverter device, the transformer mounted on the power supply board uses a material having a relatively large mass such as iron or ferrite, and the power supply board is required to have a stronger vibration-proof design than the control board. However, there was a problem that measures were not taken.

この発明は、上記のような問題点を解決するためになされたもので、使用環境下での振動領域において、簡単な構成で電源基板の耐振性を向上させることができる自動車用電力変換装置を得ることを目的とする。 The present invention has been made to solve the above-described problems. An automotive power conversion device that can improve the vibration resistance of a power supply board with a simple configuration in a vibration region under a use environment. The purpose is to obtain.

この発明に係る自動車用電力変換装置では、ケースと、このケース内に設けられ、電力の導通、遮断を行うパワー半導体素子を有するパワー半導体モジュールと、前記ケース内に制御基板用締結具で固定され、前記パワー半導体素子のゲートを制御する制御基板と、前記ケース内に電源基板用締結具で固定されているとともにトランスが搭載され、前記制御基板に電力を供給する電源基板とを有し、電源と電動機との間に接続され、自動車に搭載される、電力の順変換、逆変換を行う電力変換装置において、隣接した前記電源基板用締結具同士の間隔は、隣接した前記制御基板用締結具同士の間隔よりも狭くなっており、電源基板の共振周波数は、前記制御基板の共振周波数よりも高領域で、前記自動車の運転環境下での振動領域よりも高領域にシフトされている。 In the automotive power converter according to the present invention, a case, a power semiconductor module that is provided in the case and has a power semiconductor element that conducts and cuts off electric power, and a fastener for the control board are fixed in the case. a control board for controlling the gate of the power semiconductor element, the trans with are fixed at the power supply board fastener is mounted in the case, and a power supply board for supplying power to the control board, power supply In the power conversion device that is connected between the motor and the motor and is mounted on the automobile and performs forward conversion and reverse conversion of power, the interval between the adjacent power supply board fasteners is the adjacent control board fastener. is narrower than the interval between the resonance frequency of the power supply substrate is a high region than the resonant frequency of the control board, high territory than the vibration area in the operating environment of the motor vehicle It has been shifted to.

この発明に係る自動車用電力変換装置によれば、使用環境下での振動領域において、簡単な構成で電源基板の耐振性を向上させることができる。 According to the automobile power conversion device of the present invention, the vibration resistance of the power supply board can be improved with a simple configuration in the vibration region under the usage environment.

以下、この発明の実施の形態について説明するが、同一または相当の部材、部位については同一符号を付して説明する。
実施の形態１．
図１はこの発明の実施の形態１のインバータ装置の正断面図であり、図２は図１のＡ−Ａ線に沿った矢視断面図である。
自動車用電力変換装置であるインバータ装置のケース１内には、電源基板２がスペーサ３を介して制御基板４とともに電源基板用締結具５ａで固定されている。電源基板２には、トランス６、及びコンデンサ７が搭載されている。
ケース１の底面には、凹部８が形成されている。この凹部８には、トランス６及びコンデンサ７が収まっている。凹部８内には良熱伝導性のシリコン系樹脂２０が充填、固化され、この樹脂により、トランス６及びコンデンサ７はケース１に対して強固に固定されている。
凹部８の両側には、それぞれケース１の長手方向のほぼ全域に延びた入口側冷却通路９及び出口側冷却通路１０が形成されている。 Hereinafter, embodiments of the present invention will be described, but the same or corresponding members and parts will be described with the same reference numerals.
Embodiment 1 FIG.
1 is a front sectional view of an inverter device according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA in FIG.
In a case 1 of an inverter device that is a power converter for automobiles, a power supply board 2 is fixed by a power supply board fastener 5 a together with a control board 4 via a spacer 3. A transformer 6 and a capacitor 7 are mounted on the power supply board 2.
A recess 8 is formed on the bottom surface of the case 1. In this recess 8, the transformer 6 and the capacitor 7 are accommodated. The recess 8 is filled and solidified with a silicon resin 20 having good thermal conductivity, and the transformer 6 and the capacitor 7 are firmly fixed to the case 1 by this resin.
An inlet-side cooling passage 9 and an outlet-side cooling passage 10 are formed on both sides of the recess 8, respectively, extending substantially over the entire length of the case 1.

図１の奥側では、電力の導通、遮断を行うパワー半導体素子を有するパワー半導体モジュール１１が、ケース１に固定されている。このパワー半導体モジュール１１の端子１１ａは、パワー半導体素子のゲートを制御する制御基板４と溶接により接続されている。
この制御基板４は、電源基板２よりも横、及び長さの寸法が共に大きく、また制御基板用締結具５ｂでケース１に固定されている。隣接した電源基板用締結具５ａ同士の間隔は、隣接したこの制御基板用締結具５ｂ同士の間隔よりも狭くなっている。 In the back side of FIG. 1, a power semiconductor module 11 having a power semiconductor element for conducting and interrupting electric power is fixed to the case 1. The terminal 11a of the power semiconductor module 11 is connected to the control board 4 that controls the gate of the power semiconductor element by welding.
The control board 4 is larger in both lateral and length dimensions than the power supply board 2, and is fixed to the case 1 with a control board fastener 5b. The distance between adjacent power supply board fasteners 5a is narrower than the distance between adjacent control board fasteners 5b.

ケース１の底面には、各パワー半導体モジュール１１の発熱面と対向して、冷却通路９，１０を通過する冷却水が一時的に滞留する冷却水滞留部１２が形成されている。
窪み形状の各冷却水滞留部１２は、複数の分岐通路１３を介して入口側冷却通路９、出口側冷却通路１０にそれぞれ連通している。 A cooling water retention portion 12 is formed on the bottom surface of the case 1 so as to face the heat generating surface of each power semiconductor module 11 and in which the cooling water passing through the cooling passages 9 and 10 is temporarily retained.
Each of the recess-shaped cooling water retention portions 12 communicates with the inlet side cooling passage 9 and the outlet side cooling passage 10 through a plurality of branch passages 13, respectively.

この実施の形態によるインバータ装置によれば、電源基板２に搭載されるトランス６は、鉄やフェライト等の比較的質量の大きな素材が用いられており、電源基板２は、制御基板４よりも、より強い耐振構造が要求されるものの、電源基板２は、制御基板４よりも横、及び長さの寸法が共に小さく、隣接した電源基板用締結具５ａ同士の間隔は、隣接した制御基板用締結具５ｂ同士の間隔よりも狭くなっているおり、また電源基板２の中間部は、トランス６、コンデンサ７及びシリコン系樹脂２０を介してケース１に固定されているので、電源基板２の共振周波数は制御基板４の共振周波数よりも高い。
このインバータ装置は、電気自動車において、電源であるバッテリと車両走行用の電動機との間に接続されて搭載されているが、電源基板２の共振周波数は、電気自動車の運転環境下での振動領域よりも高領域にシフトされており、電源基板２が電気自動車の運転中に共振することは防止され、電源基板２の耐振性が向上する。
なお、電磁自動車の使用環境下での振動領域に制御基板４の共振周波数が含まれていても、この制御基板４には、面付け部品が殆ど無いので、制御基板４自体の質量は小さい。従って、例えばパワー半導体モジュール１１の端子１１ａが制御基板４の溶接部で剥がれるといったことは生じない。 According to the inverter device according to this embodiment, the transformer 6 mounted on the power supply board 2 is made of a material having a relatively large mass such as iron or ferrite, and the power supply board 2 is Although a stronger vibration-proof structure is required, the power supply board 2 is smaller in both lateral and length dimensions than the control board 4, and the interval between the adjacent power supply board fasteners 5a is the fastening for the adjacent control board. Since the gap between the tools 5b is narrower, and the intermediate portion of the power supply substrate 2 is fixed to the case 1 via the transformer 6, the capacitor 7, and the silicon resin 20, the resonance frequency of the power supply substrate 2 is obtained. Is higher than the resonance frequency of the control board 4.
This inverter device is mounted and connected between a battery as a power source and a motor for driving a vehicle in an electric vehicle, but the resonance frequency of the power supply board 2 is a vibration region under the driving environment of the electric vehicle. The power supply board 2 is prevented from resonating during operation of the electric vehicle, and the vibration resistance of the power supply board 2 is improved.
Even if the resonance frequency of the control board 4 is included in the vibration region under the usage environment of the electromagnetic vehicle, since the control board 4 has almost no imposition parts, the mass of the control board 4 itself is small. Therefore, for example, the terminal 11 a of the power semiconductor module 11 does not peel off at the welded portion of the control board 4.

また、冷却水は、入口側冷却通路９から入り、分岐通路１３を通って冷却水滞留部１２に入った後、分岐通路を通じて出口側冷却通路１０に流れるようになっているが、入口側冷却通路９及び出口側冷却通路１０の近傍にトランス６及びコンデンサ７が設けられているので、トランス６及びコンデンサ７からの熱は、良熱伝導性のシリコン系樹脂２０を通じて入口側冷却通路９及び出口側冷却通路１０内を流れる冷却水を通じて、外部に効率良く放出される。   Further, the cooling water enters from the inlet side cooling passage 9, enters the cooling water retention part 12 through the branch passage 13, and then flows to the outlet side cooling passage 10 through the branch passage. Since the transformer 6 and the condenser 7 are provided in the vicinity of the passage 9 and the outlet side cooling passage 10, the heat from the transformer 6 and the condenser 7 passes through the good thermal conductivity silicon resin 20 and enters the inlet side cooling passage 9 and the outlet. It is efficiently discharged to the outside through the cooling water flowing in the side cooling passage 10.

また、パワー半導体モジュール１１の発熱面は、冷却水滞留部１２に滞留した冷却水と面接触しており、パワー半導体モジュール１１は、冷却水と熱交換され、効率良く冷却される。   Moreover, the heat generating surface of the power semiconductor module 11 is in surface contact with the cooling water retained in the cooling water retention portion 12, and the power semiconductor module 11 is heat-exchanged with the cooling water and efficiently cooled.

また、トランス６及びコンデンサ７を収納した凹部８内には、固化されたシリコン系樹脂２０が充填されているので、トランス６及びコンデンサ７は、ケース１に対して一体化しており、トランス６及びコンデンサ７の耐振性が向上する。   In addition, since the recessed portion 8 that houses the transformer 6 and the capacitor 7 is filled with the solidified silicon resin 20, the transformer 6 and the capacitor 7 are integrated with the case 1, and the transformer 6 and The vibration resistance of the capacitor 7 is improved.

また、電源基板２と制御基板４とは重なって配置されているので、インバータ装置の設置スペースを小さくすることができる。   Further, since the power supply board 2 and the control board 4 are arranged so as to overlap each other, the installation space for the inverter device can be reduced.

この発明の実施の形態１のインバータ装置の正断面図である。1 is a front sectional view of an inverter device according to a first embodiment of the present invention. 図１のＡ−Ａ線に沿った矢視断面図である。It is arrow sectional drawing along the AA line of FIG.

符号の説明Explanation of symbols

１ ケース、２ 電源基板、４ 制御基板、５ａ 電源基板用締結具、５ｂ 制御基板用締結具、６ トランス、７ コンデンサ、８ 凹部、９ 入口側冷却通路、１０ 出口側冷却通路、１１ パワー半導体モジュール、１２ 冷却水滞留部、１３ 分岐通路、２０ シリコン系樹脂。   DESCRIPTION OF SYMBOLS 1 Case, 2 Power supply board, 4 Control board, 5a Power supply board fastener, 5b Control board fastener, 6 Transformer, 7 Capacitor, 8 Recessed part, 9 Inlet side cooling path, 10 Outlet side cooling path, 11 Power semiconductor module , 12 Cooling water retention part, 13 branch passage, 20 silicone resin.

Claims (5)

ケースと、
このケース内に設けられ、電力の導通、遮断を行うパワー半導体素子を有するパワー半導体モジュールと、
前記ケース内に制御基板用締結具で固定され、前記パワー半導体素子のゲートを制御する制御基板と、
前記ケース内に電源基板用締結具で固定されているとともにトランスが搭載され、前記制御基板に電力を供給する電源基板と
を有し、
電源と電動機との間に接続され、自動車に搭載される、電力の順変換、逆変換を行う電力変換装置において、
隣接した前記電源基板用締結具同士の間隔は、隣接した前記制御基板用締結具同士の間隔よりも狭くなっており、電源基板の共振周波数は、前記制御基板の共振周波数よりも高領域で、前記自動車の運転環境下での振動領域よりも高領域にシフトされていることを特徴とする自動車用電力変換装置。 Case and
A power semiconductor module provided in this case and having a power semiconductor element for conducting and interrupting power;
A control board fixed in the case with a control board fastener and controlling the gate of the power semiconductor element;
A power supply board that is fixed in the case with a power supply board fastener and mounted with a transformer, and that supplies power to the control board;
In a power conversion device that is connected between a power source and an electric motor and that is mounted on an automobile and performs forward conversion and reverse conversion of power,
The interval between the adjacent power supply board fasteners is narrower than the interval between the adjacent control board fasteners, and the resonance frequency of the power supply board is higher than the resonance frequency of the control board , automotive power conversion apparatus characterized by being shifted to the high range than the vibration area in the operating environment of the motor vehicle. 前記ケースには、前記トランスを収納した凹部が形成されており、この凹部に良熱伝導性の樹脂が充填、固化されていることを特徴とする請求項１に記載の自動車用電力変換装置。 The said casing, said has accommodated the recess is formed a transformer, automotive power converter according to claim 1, characterized in that the good heat conductivity of the resin is filled is solidified into the recess. 前記凹部の両側の前記ケースには、冷却水が流れる、入口側冷却通路及び出口側冷却通路がそれぞれ形成されていることを特徴とする請求項２に記載の自動車用電力変換装置。 The power conversion device for an automobile according to claim 2, wherein an inlet side cooling passage and an outlet side cooling passage through which cooling water flows are respectively formed in the cases on both sides of the recess . 前記ケースには、前記パワー半導体モジュールの発熱面に対向して前記冷却水が滞留する冷却水滞留部が形成されており、前記入口側冷却通路及び前記出口側冷却通路は、分岐通路を介して前記冷却水滞留部と連通していることを特徴とする請求項３に記載の自動車用電力変換装置。 The case is formed with a cooling water retention portion where the cooling water stays facing the heat generating surface of the power semiconductor module, and the inlet side cooling passage and the outlet side cooling passage are connected via a branch passage. The automotive power converter according to claim 3, wherein the automotive power converter is in communication with the cooling water retention part. 前記制御基板と前記電源基板とは、重なって配置されていることを特徴とする請求項１ないし請求項４の何れか１項に記載の自動車用電力変換装置。 5. The automotive power conversion device according to claim 1, wherein the control board and the power supply board are arranged to overlap each other.
JP2005002369A 2005-01-07 2005-01-07 Automotive power converter Expired - Fee Related JP4089910B2 (en)

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JP2011239602A (en) * 2010-05-12 2011-11-24 Nissan Motor Co Ltd Power conversion device and vibration suppression structure for circuit board
CN105163565A (en) * 2015-09-11 2015-12-16 江苏万邦微电子有限公司 Logic conversion circuit device
CN105163565B (en) * 2015-09-11 2017-09-12 江苏万邦微电子有限公司 A kind of logical transition circuit arrangement

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