JP2013110851A - 冷却装置 - Google Patents
冷却装置 Download PDFInfo
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- JP2013110851A JP2013110851A JP2011253925A JP2011253925A JP2013110851A JP 2013110851 A JP2013110851 A JP 2013110851A JP 2011253925 A JP2011253925 A JP 2011253925A JP 2011253925 A JP2011253925 A JP 2011253925A JP 2013110851 A JP2013110851 A JP 2013110851A
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- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
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Abstract
【解決手段】冷却装置12は、冷却水を循環させることによって被冷却体を冷却する水冷システム35と、冷媒の気液相変化を利用して冷却水を外気温以下に冷却する冷凍サイクルシステム36と、を備え、水冷システム35は、冷却水の熱を外気へ放熱するラジエータ5を介して冷却された冷却水を被冷却体に流過させる第1流路31aと、冷凍サイクルシステム36の蒸発器6を介して外気温以下に冷却された冷却水を第1流路31aに配された被冷却体に流過させる第2流路31bと、第1流路31aと第2流路31bを流れる冷却水の流量を制御する流量制御手段9a、9bと、を備えている。
【選択図】図1
Description
図1は、本発明に係る冷却装置の実施例1が適用される車両の前方内部の基本構成を示したものである。ここで、図示例は、前輪駆動方式の電動車両に本実施例1の冷却装置12を適用したものであり、図中右側が車両41の進行方向であり、電力変換器10や電動機11等からなる電気駆動システム40は車両41の前輪付近に搭載されている。なお、本実施例1の冷却装置12は、後輪駆動方式や4輪駆動方式の電動車両、もしくはエンジンを搭載したハイブリッド電動車両等にも適用することができる。
図4は、本発明に係る冷却装置の実施例2が適用される車両の前方内部の基本構成を示したものである。本実施例2においては、上記する実施例1の水冷システム35の第2流路31bが車室内暖房用の流路を兼ねており、その他の構成は実施例1と同様であるため、実施例1と同様の構成には同様の符号を付してその詳細な説明は省略する。
3 減圧器
4 凝縮器
5 ラジエータ
6 蒸発器
7 ポンプ
8 リザーバ
9a、9b 流量制御弁(流量制御手段)
10 電力変換器(被冷却体)
11 電動機(被冷却体)
12 冷却装置
13 ファン
14 蓄電池(被冷却体)
15 コントローラ
16a、16b 温度センサ
18 冷媒配管
25 ヒータコア(熱交換器)
26 ヒータエレメント
31 水冷システムの流路
31a 第1流路
31b 第2流路
31c 共有部分
32 ゴムホース
35 水冷システム(第1冷却システム)
36 冷凍サイクルシステム(第2冷却システム)
40 電気駆動システム
41 車両
Claims (15)
- 車両の駆動力を発生する電動機と、該電動機の駆動電力を制御する電力変換器と、該電力変換器に電力を供給する蓄電池のうち、少なくとも一つを被冷却体とする冷却装置であって、
前記冷却装置は、前記被冷却体に冷却媒体を流過させることによって該被冷却体を冷却する第1冷却システムと、前記第1冷却システムの前記冷却媒体を外気温以下に冷却する第2冷却システムと、を備え、
前記第1冷却システムは、前記冷却媒体の熱を外気へ放熱するラジエータを介して冷却された冷却媒体を前記被冷却体に流過させる第1流路と、前記第2冷却システムを介して外気温以下に冷却された冷却媒体を前記第1流路に配された前記被冷却体に流過させる第2流路と、前記第1流路と前記第2流路を流れる冷却媒体の流量を制御する流量制御手段と、を備えることを特徴とする冷却装置。 - 前記流量制御手段は、前記被冷却体の発熱量に応じて、前記第1流路と前記第2流路を流れる前記冷却媒体の流量を変化させることを特徴とする請求項1に記載の冷却装置。
- 前記流量制御手段は、前記被冷却体の発熱量が大きくなるに従って、前記第1流路に対する前記第2流路の前記冷却媒体の流量を増加させることを特徴とする請求項2に記載の冷却装置。
- 前記第2流路は、前記第1流路よりも高い断熱性能を備えた部材で覆われていることを特徴とする請求項1に記載の冷却装置。
- 前記第2流路は、車両の室内を暖めるための熱交換器を備えていることを特徴とする請求項1に記載の冷却装置。
- 前記第1冷却システムは、前記冷却媒体として冷却水を用い、該冷却水を循環させることによって前記被冷却体を冷却する水冷システムからなり、前記第2冷却システムは、冷媒の気液相変化を利用し、該冷媒を循環させることによって前記冷却水を冷却する冷凍サイクルシステムからなり、
前記第1冷却システムの前記第1流路では、前記ラジエータを介して前記冷却媒体の熱を外気へ放熱されることによって前記冷却水が冷却され、前記第2流路では、前記冷凍サイクルシステムの蒸発器を介して前記冷却水の熱が該冷凍サイクルシステムの前記冷媒へ放熱されることによって前記冷却水が冷却されることを特徴とする請求項1に記載の冷却装置。 - 前記水冷システムの前記第1流路は、前記冷却水の体積変化を吸収するためのリザーバを備えることを特徴とする請求項6に記載の冷却装置。
- 前記冷凍サイクルシステムの前記蒸発器は、前記電動機、前記電力変換器または前記蓄電池によって支持されていることを特徴とする請求項6に記載の冷却装置。
- 前記第2流路における前記冷却水の循環が停止している間に、前記冷却水は前記冷凍サイクルシステムの前記蒸発器を介して冷却されることを特徴とする請求項6に記載の冷却装置。
- 前記冷却装置は、前記被冷却体の発熱量が所定値よりも大きくなると、前記流量制御手段を用いて前記水冷システムの前記冷却水の流路を前記第1流路から前記第2流路へ切り替えて、前記冷却水を前記第2流路で循環させることを特徴とする請求項6に記載の冷却装置。
- 前記冷却装置は、前記冷凍サイクルシステムの圧縮機を停止し且つ前記第1流路における前記冷却水の循環が停止した状態で、前記冷却水を前記第2流路で循環させ、前記第2流路の前記冷却水の水温が上昇して前記第1流路の前記冷却水の水温と等しくなった後に、前記第1流路における前記冷却水の循環を開始することを特徴とする請求項10に記載の冷却装置。
- 前記第1流路と前記第2流路は前記冷却水を圧送する手段を共用していることを特徴とする請求項6に記載の冷却装置。
- 前記圧送する手段はポンプであることを特徴とする請求項12に記載の冷却装置。
- 前記第1流路と前記第2流路は共有部分を有しており、前記圧送する手段は前記共有部分に配設されていることを特徴とする請求項12に記載の冷却装置。
- 前記第1流路と前記第2流路はそれぞれ、その内部を循環する前記冷却水の水温を検出する温度センサを備えており、前記流量制御手段は、前記温度センサに基づいて前記第1流路と前記第2流路を流れる前記冷却水の流量を制御することを特徴とする請求項6に記載の冷却装置。
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