JP5081951B2 - インバータ装置 - Google Patents
インバータ装置 Download PDFInfo
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- JP5081951B2 JP5081951B2 JP2010124297A JP2010124297A JP5081951B2 JP 5081951 B2 JP5081951 B2 JP 5081951B2 JP 2010124297 A JP2010124297 A JP 2010124297A JP 2010124297 A JP2010124297 A JP 2010124297A JP 5081951 B2 JP5081951 B2 JP 5081951B2
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- conductor
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- inverter device
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Description
SWUH…スイッチング素子
DUH…ダイオード
LC…リード状導体
170,172…突起端子
Claims (5)
- 車両に搭載されて直流電源から供給された直流電流を、車両に搭載された回転機を駆動するための交流電流に変換するインバータ装置であって、
四角形状のスイッチング素子と、当該スイッチング素子と電気的に並列に接続されたダイオードと、銅配線と、金属製の板状導体と、を有するパワーモジュールと、
セラミックス製の絶縁性基材と、を備え、
前記銅配線には、前記スイッチング素子の一方の面に形成されたコレクタ電極及び前記ダイオードの一方の面に形成されたカソード電極がハンダを介して接続され、
前記スイッチング素子の他方の面には、エミッタ電極及びゲート電極が形成され、
前記スイッチング素子の前記ゲート電極は、当該スイッチング素子の中央部よりも一方の端辺側に近づけて配置され、かつボンディングワイヤを介してゲート端子と接続され、
前記スイッチング素子の前記エミッタ電極は、当該スイッチング素子の他方の端辺の近傍から前記ゲート電極の側部まで形成され、
前記板状導体は、前記スイッチング素子の前記エミッタ電極を覆って形成される第1導体部と、前記ダイオードの他方の面に形成されたアノード電極を覆って形成される第2導体部とを有し、
前記板状導体の前記第1導体部は、ハンダを介して前記エミッタ電極と接続され、
前記板状導体の前記第2導体部は、ハンダを介して前記アノード電極と接続され、
前記板状導体は、前記第1導体部と前記第2導体部を一体に形成しており、
前記絶縁性基材は、前記第1導体部を挟んで前記スイッチング素子に対向するように形成され、かつ前記第2導体部を挟んで前記ダイオードに対向するように形成されるインバータ装置。 - 請求項1に記載されたインバータ装置であって、
前記板状導体の前記第1導体部は、前記スイッチング素子の他方の端辺の近傍から前記ゲート電極の側部まで形成されるインバータ装置。 - 請求項1または2のいずれかに記載されたインバータ装置であって、
前記パワーモジュールは、複数のスイッチング素子を含んで構成され、
前記板状導体の前記第1導体部は、ハンダを介して前記複数のスイッチング素子のそれぞれのエミッタ電極と接続されるインバータ装置。 - 請求項3に記載されたインバータ装置であって、
前記板状導体の前記第1導体部は、前記複数のスイッチング素子毎に分割するためのスリットを形成するインバータ装置。 - 請求項1ないし4のいずれかに記載されたインバータ装置であって、
前記板状導体の前記第1導体部は、前記スイッチング素子の前記エミッタ電極と対向する部分に、前記エミッタ電極の面とは垂直方向に形成された貫通部を形成するインバータ装置。
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