JP2015159625A - 電動車両の電源装置 - Google Patents
電動車両の電源装置 Download PDFInfo
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- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
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Abstract
【解決手段】この電動車両100のECU80は、メインバッテリ10の温度TBに応じた値の目標回転数RTを冷却装置15に与え、冷却装置15に含まれる冷却ファンが目標回転数RTで駆動している場合は、補機バッテリ70のSOCが100%よりも小さな所定範囲SOCL〜SOCH内に収まるように主DC/DCコンバータ60を制御し、冷却ファンが目標回転数RTで駆動していない場合は、補機バッテリ70のSOCが100%になるように主DC/DCコンバータ60を制御する。
【選択図】図1
Description
図1は本発明の実施の形態1による電動車両100の構成を示す回路ブロック図である。図1において、電動車両100は、メインバッテリ10と、電力制御ユニット(PCU:Power Control Unit)20と、モータジェネレータ30と、動力伝達ギア40と、車輪50と、制動機構55と、ECU(Electronic Control Unit)80とを備える。
実施の形態1では、SOC検出器71によって補機バッテリ70のSOCを検出し、メインバッテリ10の温度TBなどに基づいて、第1の充電モードM1と第2の充電モードを切り換えた。しかし、実施の形態1では、補機バッテリ70の端子間電圧Vs、充放電電流、および温度に基づいて補機バッテリ70のSOCを求めるので、装置構成が複雑になるという問題がある。本実施の形態2では、この問題の解決が図られる。
実施の形態1では、図2に示すように、ステップS4において冷却ファンの目標回転数RTと実回転数RAの差が第1のしきい値回転数Rth1以上であるかを判別した。しかし、実施の形態1,2では、冷却ファンの目標回転数RTと実回転数RAの差を求める必要があるので、装置構成が複雑になるという問題がある。本実施の形態3では、この問題の解決が図られる。
Claims (11)
- 車輪と結合された電動機を駆動させる電力を蓄える主蓄電装置と、
補機負荷を駆動させる直流電力を蓄える副蓄電装置と、
前記主蓄電装置の電圧を降圧して前記副蓄電装置に与え、前記副蓄電装置を充電するDC/DCコンバータと、
前記副蓄電装置から電源電圧を受けて目標駆動値に応じて駆動し、前記主蓄電装置を冷却する冷却装置と、
前記主蓄電装置の温度を検出する第1の検出器と、
前記副蓄電装置の充電量を検出する第2の検出器と、
前記冷却装置の実駆動値を検出する第3の検出器と、
前記第1〜第3の検出器の検出結果に基づいて動作し、前記主蓄電装置の温度に応じた値の目標駆動値を前記冷却装置に与え、前記冷却装置が前記目標駆動値で駆動している場合は、前記副蓄電装置の充電量が最大値よりも小さな予め定められた範囲内に収まるように前記DC/DCコンバータを制御する第1の充電モードを実行し、前記冷却装置が前記目標駆動値で駆動していない場合は、前記副蓄電装置の充電量が前記予め定められた範囲よりも大きな値になるように前記DC/DCコンバータを制御する第2の充電モードを実行する制御装置とを備える、電動車両の電源装置。 - 前記予め定められた範囲よりも大きな値は前記副蓄電装置の充電量の最大値である、請求項1に記載の電動車両の電源装置。
- 前記制御装置は、
前記目標駆動値と前記実駆動値との差が第1のしきい値よりも小さい場合は、前記冷却装置が前記目標駆動値で駆動していると判別して前記第1の充電モードを実行し、
前記目標駆動値と前記実駆動値との差が前記第1のしきい値よりも大きい場合は、前記冷却装置が前記目標駆動値で駆動していないと判別して前記第2の充電モードを実行する、請求項1または請求項2に記載の電動車両の電源装置。 - 前記制御装置は、前記第2の充電モードを実行している場合は、前記目標駆動値と前記実駆動値との差が前記第1のしきい値よりも大きかった期間における前記目標駆動値の最小値よりも予め定められた値だけ小さな第2のしきい値よりも前記目標駆動値が小さくなったときに、前記第2の充電モードを停止して前記第1の充電モードを実行する、請求項3に記載の電動車両の電源装置。
- 前記制御装置は、
前記目標駆動値が第1のしきい値よりも小さい場合は、前記冷却装置が前記目標駆動値で駆動していると判別して前記第1の充電モードを実行し、
前記目標駆動値が前記第1のしきい値よりも大きい場合は、前記冷却装置が前記目標駆動値で駆動していないと判別して前記第2の充電モードを実行する、請求項1または請求項2に記載の電動車両の電源装置。 - 前記制御装置は、前記第2の充電モードを実行している場合は、前記第1のしきい値よりも予め定められた値だけ小さな第2のしきい値よりも前記目標駆動値が小さくなったときに、前記第2の充電モードを停止して前記第1の充電モードを実行する、請求項5に記載の電動車両の電源装置。
- 前記制御装置は、前記主蓄電装置の温度が第3のしきい値よりも高い場合は、前記冷却装置が前記目標駆動値で駆動しているか否かを判別して前記第1または第2の充電モードを実行し、前記主蓄電装置の温度が第3のしきい値よりも低い場合は前記第1の充電モードを実行する、請求項1から請求項6までのいずれか1項に記載の電動車両の電源装置。
- さらに、前記主蓄電装置の内部の圧力を検出する第4の検出器を備え、
前記制御装置は、前記主蓄電装置の温度が第3のしきい値よりも低い場合であっても、前記主蓄電装置の温度が前記第3のしきい値よりも低い第4のしきい値よりも高く、かつ前記主蓄電装置の内部の圧力が第5のしきい値よりも高い場合は、前記冷却装置が前記目標駆動値で駆動しているか否かを判別して前記第1または第2の充電モードを実行する、請求項7に記載の電動車両の電源装置。 - 前記副蓄電装置の充電量は前記副蓄電装置の電圧によって近似され、
前記第2の検出器は前記副蓄電装置の電圧を前記副蓄電装置の充電量の近似値として検出し、
前記制御装置は、前記第1の充電モード時は前記副蓄電装置の電圧が定格電圧よりも小さな予め定められた電圧範囲内に収まるように前記DC/DCコンバータを制御し、前記第2の充電モード時は前記副蓄電装置の電圧が前記予め定められた電圧範囲よりも大きな値になるように前記DC/DCコンバータを制御する、請求項1から請求項8までのいずれか1項に記載の電動車両の電源装置。 - 前記冷却装置は、前記主蓄電装置に送風する冷却ファンを含み、
前記目標駆動値は前記冷却ファンの目標回転数であり、
前記実駆動値は前記冷却ファンの実回転数である、請求項1から請求項9までのいずれか1項に記載の電動車両の電源装置。 - 前記冷却装置は、前記主蓄電装置を冷却させる冷媒を循環させるポンプを含み、
前記目標駆動値は前記ポンプの目標回転数であり、
前記実駆動値は前記ポンプの実回転数である、請求項1から請求項9までのいずれか1項に記載の電動車両の電源装置。
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