JP2021005927A - 車両の冷却装置 - Google Patents
車両の冷却装置 Download PDFInfo
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- 238000001816 cooling Methods 0.000 title claims abstract description 168
- 239000002826 coolant Substances 0.000 claims description 204
- 239000000110 cooling liquid Substances 0.000 claims description 32
- 238000005057 refrigeration Methods 0.000 claims description 26
- 239000003507 refrigerant Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 abstract 4
- 239000003921 oil Substances 0.000 description 87
- 230000009969 flowable effect Effects 0.000 description 9
- 101100168904 Schizosaccharomyces pombe (strain 972 / ATCC 24843) cul3 gene Proteins 0.000 description 7
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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Abstract
Description
図1は、第1実施形態における車両の冷却装置の概略構成を示す模式図である。第1実施形態における冷却装置1は、モータ2を動力源とする車両Veに搭載されるものであり、冷却液が循環する冷却回路100を備える。
図8は、第2実施形態における車両の冷却装置の概略構成を示す模式図である。なお、第2実施形態の説明では、第1実施形態と同様の構成については説明を省略し、その参照符号を引用する。
2 モータ
3 パワーコントロールユニット(PCU)
4 バッテリ
5 制御装置(ECU)
40 電池セル
41 バッテリモジュール
42 モジュールケース
100,100A 冷却回路
101 電動ポンプ
102 切替弁
103 オイルクーラ
104 ラジエータ
105 吐出油路
106 合流油路
107 吸入油路
108 電動ファン
109 熱交換器
110 第1回路
111 第1供給油路
112 第2供給油路
113 第1接続油路
120,120A 第2回路
121,123 第3供給油路
122 第2接続油路
124 第4供給油路
P 合流点
Ve 車両
Claims (12)
- 外部電源から供給された電力を充電可能なバッテリと、
前記バッテリからの電力により走行用の動力を出力するモータと、
前記バッテリの直流電力を交流電力に変換して前記モータに供給するパワーコントロールユニットと、
前記バッテリおよび前記パワーコントロールユニットを冷却するための冷却液が循環する冷却回路と、
前記冷却回路に設けられ、冷却液を循環させる電動ポンプと、
前記冷却回路に設けられ、冷却回路を循環する前記冷却液から放熱させる放熱器と、
前記冷却回路を循環する冷却液の流量を制御する制御部と、
を備える車両の冷却装置であって、
前記冷却回路は、
前記電動ポンプから吐出された冷却液が前記パワーコントロールユニットを経由して循環する第1回路と、
前記第1回路に並列に接続され、前記電動ポンプから吐出された冷却液が前記パワーコントロールユニットを経由せずに前記バッテリを経由して循環する第2回路と、
前記第1回路を流れる冷却液の流量と前記第2回路を流れる冷却液の流量との割合を制御する流量制御手段と、
を有し、
前記制御部は、前記外部電源の電力を前記バッテリに充電している充電中である場合、前記電動ポンプおよび前記流量制御手段を制御して、前記バッテリ側の前記第2回路を流通する冷却液の流量を、前記パワーコントロールユニット側の前記第1回路を流通する冷却液の流量よりも多くする
ことを特徴とする車両の冷却装置。 - 前記バッテリは、複数の電池セルからなるバッテリモジュールと、前記バッテリモジュールを収容するモジュールケースと、を複数備え、
各モジュールケースの内部では、前記バッテリモジュールが前記冷却液に液没し、かつ前記冷却液が前記電池セルとの間で直接熱交換を行い、
前記モジュールケースは、該モジュールケースを上側から見た場合に、冷却液の流入口および冷却液の流出口が互いに対角位置の近傍に設けられた略直方体状を有する
ことを特徴とする請求項1に記載の車両の冷却装置。 - 前記制御部は、前記モータが出力した動力により走行する走行時に、前記電動ポンプおよび前記流量制御手段を制御して、前記パワーコントロールユニット側の前記第1回路を流通する冷却液の流量を、前記バッテリ側の前記第2回路を流通する冷却液の流量よりも多くする
ことを特徴とする請求項1または2に記載の車両の冷却装置。 - 前記制御部は、前記外部電源から前記バッテリへの充電準備状態であることを検出した場合、前記電動ポンプおよび前記流量制御手段を制御して、前記バッテリ側の前記第2回路を流通する冷却液の流量を、前記パワーコントロールユニット側の前記第1回路を流通する冷却液の流量よりも多くする
ことを特徴とする請求項1から3のうちのいずれか一項に記載の車両の冷却装置。 - 前記制御部は、前記充電準備状態であることを検出した場合、かつ前記バッテリの温度が所定値を超える場合には、前記バッテリの温度が前記所定値以下になるまで、前記電動ポンプおよび前記流量制御手段を制御して、前記バッテリ側の前記第2回路を流通する冷却液の流量を、前記パワーコントロールユニット側の前記第1回路を流通する冷却液の流量よりも多くする
ことを特徴とする請求項4に記載の車両の冷却装置。 - 前記第1回路には、前記モータを冷却するためのオイルと前記冷却液との間で熱交換を行うオイルクーラが設けられている
ことを特徴とする請求項1から5のうちのいずれか一項に記載の車両の冷却装置。 - 前記放熱器に冷却風を送る電動ファン、をさらに備え、
前記制御部は、前記充電中である場合に、前記電動ファンを作動させ、前記電動ファンによる冷却風で前記放熱器を冷却する
ことを特徴とする請求項1から6のうちのいずれか一項に記載の車両の冷却装置。 - 前記第2回路は、前記流量制御手段と前記バッテリとの間に配置され、冷凍サイクルの冷媒と前記冷却液との間で熱交換を行う熱交換器、を有し、
前記制御部は、前記充電中である場合に、前記冷凍サイクルを作動させ、前記熱交換器で前記冷却液と前記冷媒とを熱交換させることにより前記冷却液を冷却させる
ことを特徴とする請求項1から7のうちのいずれか一項に記載の車両の冷却装置。 - 前記制御部は、前記外部電源から前記バッテリへの充電準備状態であることを検出した場合に、前記バッテリの温度が所定値を超える場合、かつ外気の温度が第2所定値を超える場合には、前記バッテリの温度が前記所定値以下になるまで、前記冷凍サイクルを作動させ、前記熱交換器で前記冷却液と前記冷媒とを熱交換させることにより前記冷却液を冷却させる
ことを特徴とする請求項8に記載の車両の冷却装置。 - 前記流量制御手段は、冷却液が流通可能な経路を前記第1回路または前記第2回路に切り替える切替弁であり、
前記制御部は、前記充電中である場合に、前記切替弁を制御して、前記第1回路と前記第2回路とのうち、前記バッテリ側の前記第2回路のみに冷却液が流通するように経路を切り替える
ことを特徴とする請求項1から9のうちのいずれか一項に記載の車両の冷却装置。 - 前記制御部は、前記モータが出力した動力により走行する走行時に、前記切替弁を制御して、前記第1回路と前記第2回路とのうち、前記パワーコントロールユニット側の前記第1回路のみに冷却液が流通するように経路を切り替える
ことを特徴とする請求項10に記載の車両の冷却装置。 - 前記制御部は、前記外部電源から前記バッテリへの充電準備状態であることを検出した場合、かつ前記バッテリの温度が所定値を超える場合には、前記バッテリの温度が前記所定値以下になるまで、前記切替弁を制御して、前記第1回路と前記第2回路とのうち、前記バッテリ側の前記第2回路のみに冷却液を流通させる
ことを特徴とする請求項10または11に記載の車両の冷却装置。
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