JP4961830B2 - 蓄電装置の充放電制御装置および充放電制御方法ならびに電動車両 - Google Patents
蓄電装置の充放電制御装置および充放電制御方法ならびに電動車両 Download PDFInfo
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- JP4961830B2 JP4961830B2 JP2006135383A JP2006135383A JP4961830B2 JP 4961830 B2 JP4961830 B2 JP 4961830B2 JP 2006135383 A JP2006135383 A JP 2006135383A JP 2006135383 A JP2006135383 A JP 2006135383A JP 4961830 B2 JP4961830 B2 JP 4961830B2
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- Y02T10/00—Road transport of goods or passengers
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Description
蓄電装置の一例として示される走行用バッテリ220は、図示するように複数のセルを直列接続した組電池であり、鉛蓄電池、リチウムイオン電池やニッケル水素電池等の二次電池により構成される。走行用バッテリ220は、インバータ240,241およびコンバータ242を介して、モータジェネレータ140A,140B(MG(1),MG(2))と接続されている。すなわち、本実施の形態では、インバータ240,241およびコンバータ242ならびにモータジェネレータ140A,140B(MG(1),MG(2))が、一体的に走行用バッテリ220の負荷を構成する。
図4を参照して、動作点510は、現在のバッテリ電流Ibおよびバッテリ電圧Vbに対応する。そして、最大放電可能電力Pe出力時の動作点520では、バッテリ電流が最大放電可能電流Idmaxであり、バッテリ電圧が下限電圧Veである。この際に、動作点510および520は、現在の推定内部抵抗Rを傾きとする直線上に位置する。
さらに、バッテリECU260は、ステップS180では、一時的な放電電力制限のため、制限緩和期間Δtに限り最大放電可能電力Peに対応させて放電電力許容値Woutを設定する。代表的には、放電電力許容値Wout=Peと設定すればよいが、マージンを設けてWout<Peに設定してもよい。なお、一時的な放電電力制限の緩和期間が制限緩和期間Δtを超えた場合には、ステップS150の判定がYES判定となるように、HV_ECU320からの要求フラグが変更される。
図6を参照して、動作点510♯は、現在のバッテリ電流Ibおよびバッテリ電圧Vbに対応する。そして、最大充電可能電力Pu入力時の動作点520♯では、バッテリ電流が最大充電可能電流Icmaxであり、バッテリ電圧が下限電圧Veである。この際に、動作点510♯および520♯は、現在の推定内部抵抗Rを傾きとする直線上に位置する。
さらに、バッテリECU260は、ステップS185では、一時的な充電電力制限のため、制限緩和期間Δt♯に限り最大充電可能電力Puに対応させて充電電力許容値Winを設定する。代表的には、充電電力許容値Win=Puと設定すればよいが、マージンを設けて|Win|<|Pu|に設定してもよい。なお、一時的な充電電力制限の緩和期間が制限緩和期間Δtを超えた場合には、ステップS155の判定がYES判定となるように、HV_ECU320からの要求フラグが変更される。
Claims (12)
- 蓄電装置の出力電圧を下限電圧から上限電圧までの電圧範囲内に維持するための充放電制御装置であって、
前記蓄電装置の状態を示す測定値を取得するための状態取得手段と、
前記蓄電装置の状態に基づいて、前記蓄電装置の充放電電力制限のための放電電力許容値および充電電力許容値を設定するための第1の制限設定手段と、
前記蓄電装置の負荷からの要求に応じて、前記充放電電力制限を前記第1の制限設定手段によりも一時的に緩和するための第2の制限設定手段と、
前記状態取得手段により取得された前記測定値に基づき、前記蓄電装置の内部抵抗を推定するための内部抵抗推定手段とを備え、
前記第2の制限設定手段は、
前記状態取得手段により取得された前記測定値のうちの現在の電池電圧および電池電流ならびに、前記内部抵抗推定手段により推定された前記内部抵抗に基づき、放電電力および充電電力の増加によって前記出力電圧が前記下限電圧および前記上限電圧にそれぞれ達する際の前記蓄電装置の放電電力および充電電力のうちの少なくとも一方を予測するための予測手段と、
前記放電電力許容値および前記充電電力許容値のうちの少なくとも一方を、前記予測手段により予測された前記放電電力および前記充電電力の少なくとも一方に従って設定する許容値設定手段とを含む、蓄電装置の充放電制御装置。 - 前記予測手段は、現在の前記電池電圧および前記下限電圧の電圧差を前記内部抵抗によって除算することによって前記蓄電装置の放電電流許容増加量を求めるとともに、前記放電電流許容増加量および前記電池電流の和で示される放電電流と前記下限電圧との乗算に従って、前記出力電圧が前記下限電圧に達する際の前記放電電力を予測する、請求項1記載の蓄電装置の充放電制御装置。
- 前記予測手段は、現在の前記電池電圧および前記上限電圧の電圧差を前記内部抵抗によって除算することによって前記蓄電装置の充電電流許容増加量を求めるとともに、前記充電電流許容増加量および前記電池電流の和で示される充電電流と前記上限電圧との乗算に従って、前記出力電圧が前記上限電圧に達する際の前記充電電力を予測する、請求項1記載の蓄電装置の充放電制御装置。
- 前記蓄電装置と、
車両駆動力を発生するための内燃機関と、
前記蓄電装置との間で双方向に電力授受可能に構成された第1および第2の電動機と、
請求項1または2記載の蓄電装置の充放電制御装置とを備えた電動車両であって、
前記第1の電動機は、前記蓄電装置の放電電力により回転駆動されることによって内燃機関を始動可能に構成され、
前記第2の電動機は、前記蓄電装置の放電電力により前記内燃機関とは独立に前記車両駆動力を発生可能に構成され、
前記充放電制御装置は、
前記内燃機関の始動時、および、前記第2の電動機への出力要求が所定以上となったときの少なくとも一方において、前記第2の制限設定手段により前記放電電力許容値を設定する、電動車両。 - 前記蓄電装置と、
車両駆動力を発生するための内燃機関と、
前記蓄電装置との間で双方向に電力授受可能に構成された電動機と、
請求項1または3記載の蓄電装置の充放電制御装置とを備えた電動車両であって、
前記電動機は、前記蓄電装置の放電電力により前記内燃機関とは独立に前記車両駆動力を発生可能であるとともに、前記電動車両の減速時に回生トルクの発生による回生制動発電によって前記蓄電装置の充電電力を発生可能に構成され、
前記充放電制御装置は、
前記電動機に要求される前記回生トルクの絶対値が所定以上と判断されるときに、前記第2の制限設定手段により前記充電電力許容値を設定する、電動車両。 - 蓄電装置の出力電圧を下限電圧から上限電圧までの電圧範囲内に維持するための充放電制御方法であって、
前記蓄電装置の状態を示す測定値を取得するステップと、
前記蓄電装置の状態に基づいて、前記蓄電装置の充放電電力制限のための放電電力許容値および充電電力許容値を設定するステップと、
前記蓄電装置の負荷からの要求に応じて、前記設定するステップよりも前記充放電電力制限を一時的に緩和するステップと、
前記取得するステップにより取得された前記測定値に基づいて、前記蓄電装置の内部抵抗を推定するステップとを備え、
前記緩和するステップは、
前記取得するステップにより取得された前記測定値のうちの現在の電池電圧および電池電流ならびに、前記推定するステップにより推定された前記内部抵抗に基づいて、放電電力および充電電力の増加によって前記出力電圧が前記下限電圧および前記上限電圧にそれぞれ達する際の前記蓄電装置の放電電力および充電電力のうちの少なくとも一方を予測するサブステップと、
前記放電電力許容値および前記充電電力許容値のうちの少なくとも一方を、前記予測するサブステップにより予測された前記放電電力および前記充電電力の少なくとも一方に従って設定するサブステップとを含む、蓄電装置の充放電制御方法。 - 前記予測するサブステップは、現在の前記電池電圧および前記下限電圧の電圧差を前記内部抵抗によって除算することによって前記蓄電装置の放電電流許容増加量を求めるとともに、前記放電電流許容増加量および前記電池電流の和で示される放電電流と前記下限電圧との乗算に従って、前記出力電圧が前記下限電圧に達する際の前記放電電力を予測する、請求項6記載の蓄電装置の充放電制御方法。
- 前記予測するサブステップは、現在の前記電池電圧および前記上限電圧の電圧差を前記内部抵抗によって除算することによって前記蓄電装置の充電電流許容増加量を求めるとともに、前記充電電流許容増加量および前記電池電流の和で示される充電電流と前記上限電圧との乗算に従って、前記出力電圧が前記上限電圧に達する際の前記充電電力を予測する、請求項6記載の蓄電装置の充放電制御方法。
- 前記蓄電装置は、車両駆動力を発生するための内燃機関ならびに、前記蓄電装置との間で双方向に電力授受可能に構成された第1および第2の電動機を備えた電動車両に搭載され、
前記第1の電動機は、前記蓄電装置の放電電力により回転駆動されることによって内燃機関を始動可能に構成され、
前記第2の電動機は、前記蓄電装置の放電電力により前記内燃機関とは独立に前記車両駆動力を発生可能に構成され、
前記緩和するステップは、前記内燃機関の始動時、および、前記第2の電動機への出力要求が所定以上となったときの少なくとも一方において、前記設定するサブステップにより前記放電電力許容値を設定する、請求項6または7に記載の蓄電装置の充放電制御方法。 - 前記蓄電装置は、車両駆動力を発生するための内燃機関および、前記蓄電装置との間で双方向に電力授受可能に構成された電動機を備えた電動車両に搭載され、
前記電動機は、前記蓄電装置の放電電力により前記内燃機関とは独立に前記車両駆動力を発生可能であるとともに、前記電動車両の減速時に回生トルクの発生による回生制動発電によって前記蓄電装置の充電電力を発生可能に構成され、
前記緩和するステップは、前記電動機に要求される前記回生トルクの絶対値が所定以上と判断されるときに、前記設定するサブステップにより前記充電電力許容値を設定する、請求項6または8記載の蓄電装置の充放電制御方法。 - 前記内部抵抗推定手段は、前記蓄電装置の温度と前記内部抵抗との間の予め求められた特性関係に従って、前記状態取得手段により取得された前記測定値のうちの電池電圧の現在値に基づいて、前記内部抵抗を推定する、請求項1〜3のいずれか1項に記載の蓄電装置の充放電制御装置。
- 前記推定するステップは、前記蓄電装置の温度と前記内部抵抗との間の予め求められた特性関係に従って、前記取得するステップにより取得された前記測定値のうちの電池電圧の現在値に基づいて、前記内部抵抗を推定する、請求項6〜10のいずれか1項に記載の蓄電装置の充放電制御方法。
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JP2006135383A JP4961830B2 (ja) | 2006-05-15 | 2006-05-15 | 蓄電装置の充放電制御装置および充放電制御方法ならびに電動車両 |
KR1020087030434A KR101021255B1 (ko) | 2006-05-15 | 2007-05-11 | 축전 장치의 충방전 제어 장치 및 충방전 제어 방법, 및 전동 차량 |
US12/226,317 US8820445B2 (en) | 2006-05-15 | 2007-05-11 | Charge/discharge control device and charge/discharge control method for power storage device, and electric-powered vehicle |
CA2651144A CA2651144C (en) | 2006-05-15 | 2007-05-11 | Charge/discharge control device and charge/discharge control method for power storage device, and electric-powered vehicle |
CN2007800175019A CN101443978B (zh) | 2006-05-15 | 2007-05-11 | 蓄电装置的充放电控制装置和充放电控制方法以及电动车辆 |
PCT/JP2007/060178 WO2007132929A1 (ja) | 2006-05-15 | 2007-05-11 | 蓄電装置の充放電制御装置および充放電制御方法ならびに電動車両 |
EP07743613.7A EP2019468A4 (en) | 2006-05-15 | 2007-05-11 | DEVICE FOR CONTROLLING CHARGE / DISCHARGE OF BATTERY BATTERY, METHOD FOR CONTROLLING LOAD / DISCHARGE, AND ELECTRIC VEHICLE |
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WO2015092986A1 (en) | 2013-12-18 | 2015-06-25 | Toyota Jidosha Kabushiki Kaisha | Electric power storage system for an electric vehicle |
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CN101443978B (zh) | 2012-05-23 |
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US20090266631A1 (en) | 2009-10-29 |
JP2007306771A (ja) | 2007-11-22 |
EP2019468A1 (en) | 2009-01-28 |
CA2651144A1 (en) | 2007-11-22 |
CA2651144C (en) | 2013-10-15 |
CN101443978A (zh) | 2009-05-27 |
KR101021255B1 (ko) | 2011-03-11 |
KR20090016706A (ko) | 2009-02-17 |
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