JP6973446B2 - 車載温調装置 - Google Patents
車載温調装置 Download PDFInfo
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- JP6973446B2 JP6973446B2 JP2019090015A JP2019090015A JP6973446B2 JP 6973446 B2 JP6973446 B2 JP 6973446B2 JP 2019090015 A JP2019090015 A JP 2019090015A JP 2019090015 A JP2019090015 A JP 2019090015A JP 6973446 B2 JP6973446 B2 JP 6973446B2
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- 238000010438 heat treatment Methods 0.000 claims description 34
- 238000005057 refrigeration Methods 0.000 claims description 28
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- 239000000498 cooling water Substances 0.000 description 190
- 230000001105 regulatory effect Effects 0.000 description 49
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- B60H1/3228—Cooling devices using compression characterised by refrigerant circuit configurations
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- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
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- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
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Description
図1〜図3を参照して、一つの実施形態に係る車載温調装置1の構成について説明する。図1は、車載温調装置1を概略的に示す構成図である。本実施形態では、車載温調装置1は、特にモータによって駆動される電動車両に搭載される。
次に、図4〜図14を参照して、車載温調装置1の代表的な作動状態について説明する。図4〜図14では、冷媒や冷却水が流れている流路が実線で、冷媒や冷却水が流れていない流路が破線でそれぞれ示されている。また、図中の細い矢印は冷媒や冷却水が流れる方向を、太い矢印は熱の移動方向をそれぞれ示している。
図14及び図15は、車載温調装置1を制御する制御ルーチンの一例を示すフローチャートである。図示した制御ルーチンは、一定時間間隔毎に実行される。
2 冷凍回路
3 低温回路
4 高温回路
5 制御装置
6 空気通路
22 コンデンサ
27 チラー
33 低温ラジエータ
34 第1三方弁
35 第2三方弁
36 四方弁
37 バッテリ熱交換器
38 PCU熱交換器
39 モータ熱交換器
Claims (11)
- 車両を駆動するためのモータと、該モータに電力を供給するバッテリと、前記モータへの供給電力を制御するパワーコントロールユニットとを備える車両において用いられる車載温調装置であって、
前記バッテリと熱交換するバッテリ熱交換器と、前記パワーコントロールユニットと熱交換するPCU熱交換器と、ラジエータと、第1熱交換器とを有すると共に、これらを通って第1熱媒体が循環するように構成された第1熱回路と、
冷媒から該冷媒及び前記第1熱媒体以外に熱を放熱させて該冷媒を凝縮させる第2熱交換器と、前記第1熱媒体から前記冷媒に吸熱させて該冷媒を蒸発させる前記第1熱交換器とを有すると共に、これらを通って冷媒が循環することで冷凍サイクルを実現するように構成された冷凍回路と、を備え、
前記第1熱回路は、前記バッテリ熱交換器と前記第1熱交換器とが前記第1熱媒体が流れるように連通し且つ前記PCU熱交換器と前記ラジエータとが前記第1熱媒体が流れるように連通すると共に前記バッテリ熱交換器及び前記第1熱交換器が前記PCU熱交換器及び前記ラジエータと前記第1熱媒体が流れるようには連通しない第1状態と、前記第1熱交換器と前記PCU熱交換器と前記ラジエータとが前記第1熱媒体が流れるように連通する第2状態との間で、連通状態を切り替えることができるように構成され、
前記バッテリの温度が所定の基準バッテリ温度よりも高いときには、前記第1熱回路の連通状態が前記第2状態であって前記第1熱交換器、前記PCU熱交換器及び前記ラジエータに前記バッテリ熱交換器を前記第1熱媒体が流れるように連通させた状態に設定される、車載温調装置。 - 前記モータと熱交換するモータ熱交換器を更に備え、
前記第1状態において、前記モータ熱交換器が前記PCU熱交換器及び前記ラジエータに前記第1熱媒体が流れるように連通すると共に、前記バッテリ熱交換器及び前記第1熱交換器は前記PCU熱交換器、前記ラジエータ及び前記モータ熱交換器に前記第1熱媒体が流れるようには連通しない、請求項1に記載の車載温調装置。 - 前記第1熱回路は、前記第2状態において、前記第1熱交換器、前記PCU熱交換器及び前記ラジエータに前記モータ熱交換器を前記第1熱媒体が流れるようにさらに連通させた状態と、前記第1熱交換器、前記PCU熱交換器及び前記ラジエータに前記モータ熱交換器を前記第1熱媒体が流れるようには連通させない状態との間で、連通状態を切り替えることができるように構成される、請求項2に記載の車載温調装置。
- 前記第1熱回路は、前記第2状態であって且つ前記第1熱交換器、前記PCU熱交換器及び前記ラジエータに前記モータ熱交換器を前記第1熱媒体が流れるように連通させた状態において、前記第1熱媒体が前記ラジエータ、前記PCU熱交換器及び前記モータ熱交換器をこの順番に循環するように構成される、請求項3に記載の車載温調装置。
- 前記第1熱回路は、前記第1状態において、前記第1熱媒体が前記ラジエータ、前記PCU熱交換器及び前記モータ熱交換器をこの順番に循環するように構成される、請求項2〜4のいずれか1項に記載の車載温調装置。
- 前記第1熱回路は、前記第2状態において、前記第1熱交換器、前記PCU熱交換器及び前記ラジエータに前記バッテリ熱交換器を前記第1熱媒体が流れるように連通させた状態と、前記第1熱交換器、前記PCU熱交換器及び前記ラジエータに前記バッテリ熱交換器を前記第1熱媒体が流れるようには連通させない状態との間で、連通状態を切り替えることができるように構成される、請求項1〜5のいずれか1項に記載の車載温調装置。
- 前記バッテリの温度が前記基準バッテリ温度よりも高い上限バッテリ温度よりも高いときには、前記第1熱回路の連通状態が前記第1状態に設定される、請求項1〜6のいずれか1項に記載の車載温調装置。
- 前記バッテリの温度が前記基準バッテリ温度以下であって前記車両の室内の暖房が要求されていないときには、前記第1熱回路の連通状態が前記第1状態に設定される、請求項1〜7のいずれか1項に記載の車載温調装置。
- 前記バッテリの温度が前記基準バッテリ温度以下であって前記車両の室内の暖房が要求されており且つ前記第1熱媒体の温度が所定の下限熱媒体温度よりも低いときには、前記第1熱回路の連通状態が前記第1状態に設定される、請求項1〜8のいずれか1項に記載の車載温調装置。
- 前記バッテリの温度が前記基準バッテリ温度以下であって前記車両の室内の暖房が要求されており且つ前記第1熱媒体の温度が前記下限熱媒体温度以上であるときには、前記第1熱回路の連通状態が前記第2状態であって前記第1熱交換器、前記PCU熱交換器及び前記ラジエータに前記バッテリ熱交換器を連通させない状態に設定される、請求項9に記載の車載温調装置。
- 車室内の暖房を行うヒータコアを備えると共に該ヒータコアを通って第2熱媒体が循環するように構成された第2熱回路を更に備え、
前記第2熱交換器は、前記冷媒から前記第2熱媒体へ熱を移動させるように前記冷媒と前記第2熱媒体との間で熱交換を行う、請求項1〜10のいずれか1項に記載の車載温調装置。
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