JP5868047B2 - 車載用電源装置 - Google Patents
車載用電源装置 Download PDFInfo
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- JP5868047B2 JP5868047B2 JP2011157475A JP2011157475A JP5868047B2 JP 5868047 B2 JP5868047 B2 JP 5868047B2 JP 2011157475 A JP2011157475 A JP 2011157475A JP 2011157475 A JP2011157475 A JP 2011157475A JP 5868047 B2 JP5868047 B2 JP 5868047B2
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 15
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
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Description
前記電力変換装置は、
筐体部に内蔵される基板の板厚方向について一方を第1板厚方向とし其の他方を第2板厚方向とすると、前記第1板厚方向へ高放熱面が形成され且つ前記第2板厚方向へ低放熱面が形成され、前記低放熱面が前記低電圧バッテリの側面へ対面するよう隣接され、隣接する前記低電圧バッテリを伴って車載用内燃機関の格納室へ配設され、前記高圧バッテリに対して前記低電圧バッテリとともに独立配置が可能とされ、前記低電圧バッテリとともに前記プレート体へ搭載され且つ前記板厚方向を前記低電圧バッテリの側面へ対抗させた状態で前記プレート体に立位配置される、こととする。
E1・I1=η・E2・(DUTY・I2) ・・・式1
E1:高電圧バッテリの出力電圧
I1:送電ラインL1bに流れる電流
E2:DC/DCコンバータの出力電圧
I2:送電ラインL2に流れる電流
η:効率
DUTY:コンバータで制御されるDUTY比
I1=(η・DUTY/3)・I2=K・I2 ・・・式2
式2の係数Kは、η及びDUTYの性質上、「K≪1」となる。即ち、DC/DCコンバータ130の通常運転中には、I2はI1より膨大な電流が流れることとなる。
Claims (8)
- 内燃機関併設発電機によって充電される高電圧バッテリからの供給電力を変換する電力変換装置と、前記電力変換装置の出力電力によって充電されると共に前記電力変換装置によって充電された電力を車載負荷へ供給する低電圧バッテリと、前記低電圧バッテリを搭載させたプレート体と、を備える車載用電源装置において、
前記電力変換装置は、
筐体部に内蔵される基板の板厚方向について一方を第1板厚方向とし其の他方を第2板厚方向とすると、前記第1板厚方向へ高放熱面が形成され且つ前記第2板厚方向へ低放熱面が形成され、前記低放熱面が前記低電圧バッテリの側面へ対面するよう隣接され、隣接する前記低電圧バッテリを伴って車載用内燃機関の格納室へ配設され、前記高圧バッテリに対して前記低電圧バッテリとともに独立配置が可能とされ、前記低電圧バッテリとともに前記プレート体へ搭載され且つ前記板厚方向を前記低電圧バッテリの側面へ対抗させた状態で前記プレート体に立位配置される、ことを特徴とする車載用電源装置。 - 前記高放熱面は、高熱伝導材から成るヒートシンクによって形成され、且つ、前記低放熱面は、前記ヒートシンクよりも熱伝導率の低い弱熱伝導材が用いられることを特徴とする請求項1に記載の車載用電源装置。
- 前記弱熱伝導材は、樹脂製材料から成るカバー部を構成することを特徴とする請求項2に記載の車載用電源装置。
- 前記筐体は、前記ヒートシンクと前記カバー部とを少なくとも含む構成から成ることを特徴とする請求項3に記載の車載用電源装置。
- 前記ヒートシンクには、パワートランジスタの実装部が積層又は形成されていることを特徴とする請求項2乃至請求項4の何れか一項に記載の車載用電源装置。
- 前記実装部の低放熱面側には、前記パワートランジスタの制御回路を実装させた制御回路基板が配置されていることを特徴とする請求項5に記載の車載用電源装置。
- 前記ヒートシンクには、前記実装部及び前記制御回路基板の何れも含まぬ領域へ大型発熱性素子が搭載されていることを特徴とする請求項6に記載の車載用電源装置。
- 前記低放熱面と前記低電圧バッテリの側面との間には、弱熱伝導性の弾性部材が間挿されていることを特徴とする請求項1乃至請求項7の何れか一項に記載の車載用電源装置。
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