JP2014535255A - バッテリーのセルブロックをスイッチングすることによってバッテリーの充放電レベルを平衡化するための方法 - Google Patents
バッテリーのセルブロックをスイッチングすることによってバッテリーの充放電レベルを平衡化するための方法 Download PDFInfo
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Abstract
Description
・ブロックの端子間の電圧がその最大値に達した場合に満たされる一時接続解除のための第1基準、換言すれば、充電電流が低減されない間は接続解除する基準。これは、負荷下の電圧、換言すれば、電流がその端子に印加されたときの電圧である。
・ブロックの充電が完了した場合に、換言すれば、ブロックが、100%のオーダーの充電状態つまり「SOC」に達した場合に満たされる、決定的な接続解除のための第2の基準。
Claims (14)
- セルのN個のブロック(N>2)の全体的な電荷レベルを平衡化するためのデバイスであって、前記N個のブロックは、接続された前記ブロックの前記セルが電荷を蓄積する充電段階中、および、接続された前記ブロックの前記セルが前記電荷を電流の形態で戻す放電段階中に回路に接続されるように設計されており、前記デバイスは、少なくとも1つのスイッチSSiと1つのスイッチPSi(0<i≦N−1)とを備え、
− 前記スイッチSSiは、前記スイッチSSiがその閉位置に、前記スイッチPSiが開位置にそれぞれあるとき、ブロックBiを、他のブロックと直列に回路中に接続することができ、それにより、前記ブロックBiは、前記充電段階および前記放電段階中に接続され、
− 前記スイッチPSiは、前記スイッチPSiが閉位置に、前記スイッチSSiが開位置にそれぞれあるとき、前記回路からブロックBiを除去することができ、それにより、前記ブロックBiは、前記放電段階中に放電接続解除基準が満たされた場合、または前記充電段階中に充電接続解除基準が満たされた場合に接続解除され、前記ブロックBiは、接続解除されたときにそのセルの充電レベルを局所的に平衡化する手段をさらに備える
ことを特徴とする、デバイス。 - 前記ブロックBiのセル(Cij)の前記充電レベルを局所的に平衡化する前記手段が、それらの充電レベルを推測するような様式で前記セルの端子間の電圧を測定する手段を含むことを特徴とする、請求項1に記載のデバイス。
- 前記セル(Cij)の前記端子間の電圧を測定する前記手段が、複数の電圧測定チャネルを備える集積回路(ICi)を含むことを特徴とする、請求項2に記載のデバイス。
- 前記ブロックBiのセル(Cij)の前記充電レベルを局所的に平衡化する前記手段が、前記ブロック中で過剰充電状態の前記セルからエネルギーを散逸させる手段(Mi)をさらに含むことを特徴とする、請求項1に記載のデバイス。
- 前記ブロックBiのセル(Cij)の前記充電レベルを局所的に平衡化する前記手段が、過剰充電状態の前記セルから前記ブロックの他のセルにエネルギーを伝達する手段(Mi)をさらに含むことを特徴とする、請求項1に記載のデバイス。
- 前記ブロックBiの前記放電接続解除基準が、戻っている前記電流が所与のしきい値よりも高いときはいつでも、前記ブロックBiの限界放電レベルを超えることを含むことを特徴とする、請求項1に記載のデバイス。
- 前記ブロックBiの前記放電接続解除基準が、戻っている前記電流が所与のしきい値よりも低いときはいつでも、前記ブロックBiの最大放電レベルを超えることを含むことを特徴とする、請求項1に記載のデバイス。
- 前記ブロックBiの前記充電接続解除基準が、印加される前記充電電流が所与のしきい値よりも高いときはいつでも、前記ブロックBiの限界充電レベルを超えることを含むことを特徴とする、請求項1に記載のデバイス。
- 前記ブロックBiの前記充電接続解除基準が、印加される前記充電電流が所与のしきい値よりも低いときはいつでも、前記ブロックBiの最大充電レベルを超えることを含むことを特徴とする、請求項1に記載のデバイス。
- 前記セルがリチウムイオンセルであることを特徴とする、請求項1から9のいずれか一項に記載のデバイス。
- 請求項1から10のいずれか一項に記載のデバイスを備えることを特徴とする、電気自動車またはハイブリッド自動車のためのモーティブパワーバッテリー。
- 請求項11に記載のモーティブパワーバッテリーを備えることを特徴とする、電気自動車またはハイブリッド自動車。
- 請求項11に記載のバッテリーを充電するための方法であって、1つの段階から次の段階へと強度が減少する充電電流を用いた連続する充電段階を備えており、実質的に100%に等しい充電状態を有していないすべてのブロックが各段階の開始時に接続され、実質的に100%に等しい充電状態を有していない前記ブロックのうちの1つのブロックBiが、
− その端子間の電圧が、前記充電電流の電流強度に依存する所定の最大しきい値に達した場合には、後続の段階の開始まで一時的に接続解除され、
− その充電状態が実質的に100%達した場合には、充電プロセスの終わりまで決定的に接続解除され、
依然として接続されているブロックの数が所定の最小数Mに達するとすぐに、現在の段階から後続の段階への移行がトリガされ、Mは、1から現在の段階の開始時に接続されていたブロックの数までの範囲内であることを特徴とする、方法。 - 1つの段階から次の段階へと強度が減少する充電電流を用いた連続する充電段階を備えており、実質的に100%に等しい充電状態を有していないもののうち最も少ない電荷をもつM’’個のブロック(1<M’’<N)が各段階の開始時に接続され、これらのM’’個のブロックは、規定された所定の時間間隔で周期的に判断され、これらのM’’個のブロックのうち1つのブロックBiが、
− その端子間の電圧が、前記充電電流の電流強度に依存する所定の最大しきい値に達した場合には、後続の段階のうちの一段階の開始まで一時的に接続解除され、
− その充電状態が実質的に100%に達した場合には、充電プロセスの終わりまで決定的に接続解除され、
依然として接続されているブロックの数が所定の最小数Mに達するとすぐに、現在の段階から後続の段階への移行がトリガされ、Mは、1から現在の段階の開始時に接続されていたブロックの数までの範囲内であることを特徴とする、請求項13に記載の方法。
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