JP7196047B2 - 電気回路体、電力変換装置、および電気回路体の製造方法 - Google Patents
電気回路体、電力変換装置、および電気回路体の製造方法 Download PDFInfo
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Description
本発明の第2の態様による電気回路体は、第1パワー半導体素子を有し、前記第1パワー半導体素子の一方の面を第1導体板によって、他方の面を第2導体板によって挟まれた回路体と、前記回路体の両面に配置される冷却部材と、少なくとも前記第2導体板と接着され、少なくとも樹脂絶縁層を有するシート状部材と、前記シート状部材と前記冷却部材との間に、前記シート状部材および前記冷却部材と接触して設けられる金属系熱伝導部材とを備え、前記回路体は、第2パワー半導体素子と、前記第2パワー半導体素子の一方の面と他方の面とを挟む第3導体板および第4導体板とを含み、前記シート状部材は、前記第2導体板と接着される第1のシート状部材と、前記第4導体板と接着される第2のシート状部材とを含み、前記金属系熱伝導部材は、前記第1のシート状部材と接触する部分と、前記第2のシート状部材と接触する部分とが、互いに分離して設けられ、前記金属系熱伝導部材は、前記第1パワー半導体素子と前記第2パワー半導体素子との配置方向に沿って厚みが異なる領域を有する。
本発明の第3の態様による電気回路体は、第1パワー半導体素子を有し、前記第1パワー半導体素子の一方の面を第1導体板によって、他方の面を第2導体板によって挟まれた回路体と、前記回路体の両面に配置される冷却部材と、少なくとも前記第2導体板と接着され、少なくとも樹脂絶縁層を有するシート状部材と、前記シート状部材と前記冷却部材との間に、前記シート状部材および前記冷却部材と接触して設けられる金属系熱伝導部材とを備え、前記シート状部材は、前記樹脂絶縁層と金属箔からなり、前記金属箔は前記金属系熱伝導部材と接触している。
本発明による電気回路体の製造方法は、第1パワー半導体素子の一方の面を第1導体板によって、他方の面を第2導体板によって挟み、第2パワー半導体素子の一方の面を第3導体板によって、他方の面を第4導体板によって挟み、少なくとも前記第2導体板と前記第4導体板とを覆うように、少なくとも樹脂絶縁層を有するシート状部材を前記第2導体板と前記第4導体板に接着し、前記第1パワー半導体素子と前記第2パワー半導体素子との配置方向に沿って、厚みが異なる領域を有する金属系熱伝導部材を前記シート状部材に接着し、前記金属系熱伝導部材に冷却部材を密着する。
図11に示すように、電力変換装置200は、インバータ回路部140、142と、補機用のインバータ回路部43と、コンデンサモジュール500とを備えている。
(1)電気回路体400は、第1パワー半導体素子(第1能動素子155)を有し、第1パワー半導体素子(第1能動素子155)の一方の面を第1導体板430によって、他方の面を第2導体板431によって挟まれた回路体310と、回路体310の両面に配置される冷却部材340と、少なくとも第2導体板431と接着され、少なくとも樹脂絶縁層441を有するシート状部材440と、シート状部材440と冷却部材340との間に、シート状部材440および冷却部材340と接触して設けられる金属系熱伝導部材450とを備えた。これにより、セラミックス基板を用いることなく、放熱性を向上できる。
11 下部ケース
13 冷却水流入管
14 冷却水流出管
17、21、181、182、188 コネクタ
18 交流ターミナル
43、140、142 インバータ回路部
155 第1能動素子
156 第1ダイオード
157 第2能動素子
158 第2ダイオード
172 制御回路
174 ドライバ回路
180 電流センサ
192、194 モータジェネレータ
200 電力変換装置
300 パワーモジュール
310 回路体
315B 正極側端子
319B 負極側端子
320B 交流側端子
325 信号端子
325K ケルビンエミッタ信号端子
325L 下アームゲート信号端子
325M ミラーエミッタ信号端子
325U 上アームゲート信号端子
340 冷却部材
360 封止樹脂
400 電気回路体
430 第1導体板(上アーム回路コレクタ側)
431 第2導体板(上アーム回路エミッタ側)
432 第3導体板(下アーム回路コレクタ側)
433 第4導体板(下アーム回路エミッタ側)
440 シート状部材
441 樹脂絶縁層
442 金属箔
450 金属系熱伝導部材
460 接着部材
500 コンデンサモジュール
601 トランスファーモールド装置
602 スプリング
603 クッションシート
604 変形治具
Claims (14)
- 第1パワー半導体素子を有し、前記第1パワー半導体素子の一方の面を第1導体板によって、他方の面を第2導体板によって挟まれた回路体と、
前記回路体の両面に配置される冷却部材と、
少なくとも前記第2導体板と接着され、少なくとも樹脂絶縁層を有するシート状部材と、
前記シート状部材と前記冷却部材との間に、前記シート状部材および前記冷却部材と接触して設けられる金属系熱伝導部材とを備え、
前記回路体は、第2パワー半導体素子と、前記第2パワー半導体素子の一方の面と他方の面とを挟む第3導体板および第4導体板とを含み、
前記シート状部材は、少なくとも前記第2導体板と前記第4導体板とを覆うように前記第2導体板と前記第4導体板に接着され、
前記金属系熱伝導部材は、前記第1パワー半導体素子と前記第2パワー半導体素子との配置方向に沿って厚みが異なる領域を有する電気回路体。 - 第1パワー半導体素子を有し、前記第1パワー半導体素子の一方の面を第1導体板によって、他方の面を第2導体板によって挟まれた回路体と、
前記回路体の両面に配置される冷却部材と、
少なくとも前記第2導体板と接着され、少なくとも樹脂絶縁層を有するシート状部材と、
前記シート状部材と前記冷却部材との間に、前記シート状部材および前記冷却部材と接触して設けられる金属系熱伝導部材とを備え、
前記回路体は、第2パワー半導体素子と、前記第2パワー半導体素子の一方の面と他方の面とを挟む第3導体板および第4導体板とを含み、
前記シート状部材は、前記第2導体板と接着される第1のシート状部材と、前記第4導体板と接着される第2のシート状部材とを含み、
前記金属系熱伝導部材は、前記第1のシート状部材と接触する部分と、前記第2のシート状部材と接触する部分とが、互いに分離して設けられ、
前記金属系熱伝導部材は、前記第1パワー半導体素子と前記第2パワー半導体素子との配置方向に沿って厚みが異なる領域を有する電気回路体。 - 請求項1または請求項2に記載の電気回路体において、
前記金属系熱伝導部材は、前記冷却部材より降伏点が低い電気回路体。 - 請求項1から請求項3のいずれか一項に記載の電気回路体において、
前記金属系熱伝導部材の外周に接着部材を有する電気回路体。 - 請求項1から請求項4のいずれか一項に記載の電気回路体において、
前記シート状部材は、前記樹脂絶縁層と金属箔からなり、前記金属箔は前記金属系熱伝導部材と接触している電気回路体。 - 第1パワー半導体素子を有し、前記第1パワー半導体素子の一方の面を第1導体板によって、他方の面を第2導体板によって挟まれた回路体と、
前記回路体の両面に配置される冷却部材と、
少なくとも前記第2導体板と接着され、少なくとも樹脂絶縁層を有するシート状部材と、
前記シート状部材と前記冷却部材との間に、前記シート状部材および前記冷却部材と接触して設けられる金属系熱伝導部材とを備え、
前記シート状部材は、前記樹脂絶縁層と金属箔からなり、前記金属箔は前記金属系熱伝導部材と接触している電気回路体。 - 請求項5または6に記載の電気回路体において、
前記金属箔は前記金属系熱伝導部材と金属接合している電気回路体。 - 請求項1から請求項7のいずれか一項に記載の電気回路体と、
前記電気回路体を組み合わせて構成されたインバータ回路部と、
を備え、直流電力を交流電力に変換する電力変換装置。 - 第1パワー半導体素子の一方の面を第1導体板によって、他方の面を第2導体板によって挟み、第2パワー半導体素子の一方の面を第3導体板によって、他方の面を第4導体板によって挟み、
少なくとも前記第2導体板と前記第4導体板とを覆うように、少なくとも樹脂絶縁層を有するシート状部材を前記第2導体板と前記第4導体板に接着し、
前記第1パワー半導体素子と前記第2パワー半導体素子との配置方向に沿って、厚みが異なる領域を有する金属系熱伝導部材を前記シート状部材に接着し、
前記金属系熱伝導部材に冷却部材を密着する電気回路体の製造方法。 - 請求項9に記載の電気回路体の製造方法において、
前記金属系熱伝導部材の外周に接着部材を塗布する電気回路体の製造方法。 - 請求項9に記載の電気回路体の製造方法において、
前記シート状部材は、前記樹脂絶縁層と金属箔からなり、前記金属箔は前記金属系熱伝導部材と接触する電気回路体の製造方法。 - 請求項11に記載の電気回路体の製造方法において、
前記金属箔は前記金属系熱伝導部材と金属接合する電気回路体の製造方法。 - 請求項9に記載の電気回路体の製造方法において、
前記第2導体板側および前記第4導体板側の前記シート状部材は、トランスファーモールドにより一体成型する電気回路体の製造方法。 - 請求項11に記載の電気回路体の製造方法において、
前記金属系熱伝導部材を溶融して前記金属箔に接合し、前記金属系熱伝導部材の表面を平坦化処理した後、前記冷却部材を密着する電気回路体の製造方法。
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