JP2011019395A - 電力変換装置および電動車両 - Google Patents
電力変換装置および電動車両 Download PDFInfo
- Publication number
- JP2011019395A JP2011019395A JP2010204567A JP2010204567A JP2011019395A JP 2011019395 A JP2011019395 A JP 2011019395A JP 2010204567 A JP2010204567 A JP 2010204567A JP 2010204567 A JP2010204567 A JP 2010204567A JP 2011019395 A JP2011019395 A JP 2011019395A
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- Prior art keywords
- power
- power module
- conductor plate
- wiring board
- conversion device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
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Abstract
【解決手段】電力変換装置200は、パワーモジュール300の並列配置の方向に幅広な正極導体板507および負極導体板505が絶縁シート517を介して積層された3層積層構造の積層配線板501と、積層配線板501の正極導体板507と負極導体板505との間に並列接続された複数のコンデンサセル514と、前記並列配置の方向に幅広な正極側導体板702および負極側導体板704が絶縁シート706を介して積層された3層積層構造を有し、2つのパワーモジュール300の正極側および負極側と積層配線板501とをそれぞれ接続する積層導体板700と、を備える。
【選択図】図2
Description
(1)不図示の直流正極端子314から接続導体部371U、(2)接続導体部371Uから素子側接続導体部372Uを介して上アーム用IGBT328および上アーム用ダイオード156の一方側電極(素子側接続導体部372Uと接続された側の電極)、(3)上アーム用IGBT328および上アーム用ダイオード156の他方側電極からワイヤ336を介して接続導体部373U、(4)接続導体部373Uから結線端子370の接続部374U、374Dを介して接続導体部371D、のように流れる。なお、前述のように上アームは、IGBT328とダイオード156を並列接続した回路部を2組並列に接続して構成される。よって、上記(2)の電流経路において、電流は、素子側接続導体部372Uにて2つに分岐され、分岐された電流は2組の回路部へそれぞれ流れる。
(1)接続導体部371Dから素子側接続導体部372Dを介して下アーム用IGBT330および上アーム用ダイオード166の一方側電極(素子側接続導体部372Dと接続された側の電極)、(2)下アーム用IGBT330および下アーム用ダイオード166の他方側電極からワイヤ336を介して接続導体部373D、(3)接続導体部373Dから不図示の直流負極端子316、のように流れる。なお、上アームと同様に下アームは、IGBT330とダイオード166を並列接続した回路部を2組並列に接続して構成されるので、上記(1)の電流経路において、電流は、素子側接続導体部371Dにて2つに分岐され、分岐された電流は2組の回路部へそれぞれ流れる。
(1)インバータ回路を内蔵する2つのパワーモジュール300を並列配置した電力変換装置200において、パワーモジュール300の並列配置の方向に幅広な正極導体板507および負極導体板505が絶縁シート517を介して積層された3層積層構造の積層配線板501と、積層配線板501の正極導体板507と負極導体板505との間に並列接続された複数のコンデンサセル514と、前記並列配置の方向に幅広な正極側導体板702および負極側導体板704が絶縁シート706を介して積層された3層積層構造を有し、2つのパワーモジュール300の正極側および負極側と積層配線板501とをそれぞれ接続する積層導体板700と、を備えた。すなわち、図2,11〜13に示したように、積層配線板501および積層導体板700は、いずれもパワーモジュール300の並列配置の方向に幅広な一対の導体板を絶縁シート等の絶縁層を介して積層した構造を有しているため、複数のコンデンサセル514から2つのパワーモジュール300までの配線部分のインダクタンスおよび抵抗を小さくすることができる。また、積層配線板501に複数のコンデンサセル514を並列接続するようにしたので、コンデンサモジュールは容量の大きな一つのコンデンサとして機能する。その結果、配線部分の低インピーダンス化を図ることができ、例えば、スイッチング時のサージ電圧を低減することができる。さらに、サージ電圧を低減してスイッチングロスを図ることでインバータ回路の発熱が低減でき、冷却系の小型化を図れる。また、過大な発熱によるスイッチング半導体素子の寿命低下を防止することができる。なお、並列配置の方向に幅広な導体板を用いて積層配線を構成しているので、2つのパワーモジュール300に対して、インピーダンスの均等化を図りやすい。
Claims (13)
- 正極側半導体スイッチユニットおよび負極側半導体スイッチユニットを相毎に備えた第1インバータ回路を内蔵する第1のパワーモジュールと、正極側半導体スイッチユニットおよび負極側半導体スイッチユニットを相毎に備えた第2インバータ回路を内蔵する第2のパワーモジュールとを備え、前記第1および第2のパワーモジュールを並列配置した電力変換装置であって、
前記第1および第2のパワーモジュールを冷却する冷却ジャケットと、
前記並列配置の方向に幅広な正極導体板および負極導体板が絶縁層を介して積層された3層積層構造の第1の配線板と、
前記第1の配線板の前記正極導体板と前記負極導体板に並列接続された複数のコンデンサと、
前記並列配置の方向に幅広な正極導体板および負極導体板が絶縁層を介して積層された3層積層構造を有し、前記第1および第2のパワーモジュールの正極側および負極側と前記第1の配線板とをそれぞれ接続する第2の配線板と、を備え、
前記第1および第2のパワーモジュールは、前記冷却ジャケットの一方の面側に配置され、
前記第2の配線板は、前記冷却ジャケットの一方の面側に配置された前記第1および第2のパワーモジュールと対向する位置に配置され、
前記複数のコンデンサ及び前記第1の配線板は、前記冷却ジャケットの前記一方の面とは反対側の他方の面側に配置され、
さらに前記第1の配線板は、当該第1の配線板の一部が前記冷却ジャケットの側面側に延在されて前記第2の配線板と接続されるように形成される電力変換装置。 - 請求項1に記載の電力変換装置において、
前記第1の配線板は、前記冷却ジャケットの側面側に延在するように前記第2の配線板に向かって延びる複数の立上げ部を有し、
前記複数の立上げ部のそれぞれの幅は、前記第1の配線板の幅より小さく形成され、
さらに前記複数の立上げ部は、当該複数の立上げ部のそれぞれ先端部において前記第2の配線板と接続される電力変換装置。 - 請求項1または2のいずれか一項に記載の電力変換装置において、
前記第1のパワーモジュールは、前記第1インバータ回路を構成する前記正極側半導体スイッチユニットおよび負極側半導体スイッチユニットを収納する第1ケースを有し、
前記第2のパワーモジュールは、前記第2インバータ回路を構成する前記正極側半導体スイッチユニットおよび負極側半導体スイッチユニットを収納する第2ケースを有し、
前記第2の配線板は、前記第1ケースと前記第2ケースとの間の空間を跨いで、さらに前記第1のパワーモジュール及び前記第2のパワーモジュールと対向するように形成される電力変換装置。 - 請求項3に記載の電力変換装置において、
前記第2の配線板は、前記第1ケースと前記第2ケースとの間の空間を通ってかつ当該第2の配線板を横切る平面に対して対称に形成される電力変換装置。 - 請求項1乃至4のいずれか一項に記載の電力変換装置において、
前記冷却ジャケットは、冷却水を流すための流路を形成し、
前記冷却ジャケットの前記流路は、冷却水が流入口から前記平面に垂直な方向へと流れるように形成された第1流路と、冷却水が前記第1流路と逆向きに流出口へと流れるように形成された第2流路とを有するU字形状の往復流路を有し、
前記第1のパワーモジュールは、前記第1インバータ回路を構成する前記正極側半導体スイッチユニットおよび前記負極側半導体スイッチユニットを搭載する第1放熱ベースを備え、
前記第2のパワーモジュールは、前記第2インバータ回路を構成する前記正極側半導体スイッチユニットおよび前記負極側半導体スイッチユニットを搭載する第2放熱ベースを備え、
前記第1放熱ベース及び前記第2放熱ベースは、前記第1流路と第2の流路とを跨るように前記冷却ジャケットに固定される電力変換装置。 - 請求項5に記載の電力変換装置において、
前記第1インバータ回路を構成する前記正極側半導体スイッチユニットは、前記第1放熱ベースを介して前記第1流路に対向して配置され、
前記第1インバータ回路を構成する前記負極側半導体スイッチユニットは、前記第1放熱ベースを介して前記第2流路に対向して配置され、
前記第2インバータ回路を構成する前記正極側半導体スイッチユニットは、前記第2放熱ベースを介して前記第1流路に対向して配置され、
前記第2インバータ回路を構成する前記負極側半導体スイッチユニットは、前記第2放熱ベースを介して前記第2流路に対向して配置される電力変換装置。 - 請求項3乃至6のいずれか一項に記載の電力変換装置において、
前記複数の立ち上げ部は、前記第1および第2のパワーモジュールの並列配置の方向と直交するモジュール側面方向の一方側に配置され、
前記第1および第2のパワーモジュールの出力端子は、該第1および第2のパワーモジュールの並列配置の方向と直交するモジュール側面方向の他方側に配置される電力変換装置。 - 請求項1に記載の電力変換装置において、
前記第1インバータ回路又は前記第2インバータ回路を駆動する駆動回路基板を備え、
前記駆動回路基板は、前記第2の配線板を挟んで前記第1のパワーモジュール及び前記第2のパワーモジュールと対向するように配置され、
前記第2の配線板の前記負極導体板は、前記駆動回路基板側に配置され、
前記第2の配線板の前記正極導体板は、前記前記第1のパワーモジュール及び前記第2のパワーモジュール側に配置される電力変換装置。 - 請求項8に記載の電力変換装置において、
3相出力型インバータ回路を内蔵する第3のパワーモジュールをさらに備え、
前記第3のパワーモジュールの放熱ベースを前記冷却ジャケットの前記他方の面に固定したことを特徴とする電力変換装置。 - 請求項9に記載の電力変換装置において、
前記複数のコンデンサに蓄積された電荷を放電するための放電回路を前記第3のパワーモジュールに内蔵し、
前記放電回路を、前記第3のパワーモジュールの正極部と負極部との間に接続したことを特徴とする電力変換装置。 - 前記請求項10に記載の電力変換装置において、
前記放電回路は放電抵抗および該放電抵抗に直列接続された放電用スイッチを備え、
前記放電用スイッチは前記第3のパワーモジュールの放熱ベースに実装し、
前記放電抵抗は前記冷却ジャケット底面に固定したことを特徴とする電力変換装置。 - 請求項9乃至11のいずれか一項に記載の電力変換装置において、
電力変換装置の直流電力入力端子と前記第1の配線板との間に設けられた各直流電力入力ラインと、電力変換装置に設けた接地端子とを接続する一対のコンデンサを備え、
前記各直流電力ライン上に、前記直流電力入力端子側から順に、前記第3のパワーモジュールの入力ラインの接続点と前記一対のコンデンサの各接続点とを設けたことを特徴とする電力変換装置。 - 請求項1乃至12のいずれか一項に記載の電力変換装置と、
前記第1のパワーモジュールにより駆動される第1のモータジェネレータと、
前記第2のパワーモジュールにより駆動される第2のモータジェネレータとを備えたことを特徴とする電動車両。
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US12/472,126 US8212382B2 (en) | 2008-07-29 | 2009-05-26 | Power conversion apparatus and electric vehicle |
AT09161467T ATE532251T1 (de) | 2008-07-29 | 2009-05-29 | Leistungsumwandlungsvorrichtung und elektrisches fahrzeug |
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