JP5717217B2 - 蓄電装置 - Google Patents
蓄電装置 Download PDFInfo
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- 238000003860 storage Methods 0.000 title claims description 115
- 230000002950 deficient Effects 0.000 claims description 83
- 238000005259 measurement Methods 0.000 claims description 18
- 230000007547 defect Effects 0.000 claims description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 description 27
- 238000007599 discharging Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000014509 gene expression Effects 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
- 230000002411 adverse Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- B60L2210/10—DC to DC converters
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Description
複数の蓄電池を具備する蓄電装置であって、
前記複数の蓄電池が互いに直列に接続された直列体を複数並列に接続し、
前記直列体は、
前記複数の蓄電池それぞれの両端の電圧値を測定する電圧測定部と、
前記電圧測定部が測定した電圧値に基づいて前記蓄電池が不良であるかどうかを判定し、不良であると判定された蓄電池がない場合、前記複数の蓄電池の直列電圧を該直列体の出力電圧として出力させ、また、不良であると判定された蓄電池がある場合、該蓄電池以外の蓄電池の電圧を昇圧させた電圧を該直列体の出力電圧として出力させる制御部とを有する。
直列に接続された複数の蓄電池を具備する直列体が複数並列に接続された蓄電装置において、該蓄電池の充放電を行う充放電方法であって、
前記複数の蓄電池それぞれの両端の電圧値を測定する処理と、
前記測定した電圧値に基づいて、前記蓄電池が不良であるかどうかを判定する判定処理と、
前記不良であると判定された蓄電池がない場合、前記複数の蓄電池の直列電圧を該直列体の出力電圧として出力させる処理と、
前記不良であると判定された蓄電池がある場合、該蓄電池以外の蓄電池の電圧を昇圧させた電圧を該直列体の出力電圧として出力させる処理とを行う。
Claims (12)
- 複数の蓄電池を具備する蓄電装置であって、
前記複数の蓄電池が互いに直列に接続された直列体を複数並列に接続し、
前記直列体は、
前記複数の蓄電池それぞれの両端の電圧値を測定する電圧測定部と、
前記複数の蓄電池それぞれに対応し、該蓄電池と並列に1次側が接続され、かつ、当該直列体と並列に2次側が接続され、前記1次側から入力される電圧を昇圧して前記2次側へ出力する複数の変圧器と、
前記電圧測定部が測定した電圧値に基づいて前記蓄電池が不良であるかどうかを判定し、不良であると判定された蓄電池がない場合、前記複数の変圧器を当該直列体から切り離し、前記複数の蓄電池の直列電圧を該直列体の出力電圧として出力させ、また、不良であると判定された蓄電池がある場合、該蓄電池および該蓄電池と接続されている前記変圧器を当該直列体から切り離し、該蓄電池以外の蓄電池の出力電圧を前記変圧器を用いて昇圧させた電圧を該直列体の出力電圧として出力させる制御部とを有する蓄電装置。 - 請求項1に記載の蓄電装置において、
前記直列体は、
前記蓄電池と直列に接続された第1の放電スイッチと、
前記複数の変圧器の前記1次側それぞれと直列に接続された複数の第2の放電スイッチとを有し、
前記制御部は、前記蓄電池の放電時に、不良であると判定された蓄電池がない場合、前記第1の放電スイッチを短絡状態とし、前記複数の第2の放電スイッチすべてを開放状態とし、また、不良であると判定された蓄電池がある場合、前記第1の放電スイッチおよび該不良であると判定された蓄電池と接続されている前記変圧器の前記1次側と接続された前記第2の放電スイッチを開放状態とし、該変圧器以外の変圧器の前記1次側と接続された前記第2の放電スイッチを短絡状態とすることを特徴とする蓄電装置。 - 請求項1または請求項2に記載の蓄電装置において、
前記直列体は、
前記複数の蓄電池それぞれと並列に接続された複数の充電スイッチを有し、
前記制御部は、前記蓄電池の充電時に、不良であると判定された蓄電池と接続されている前記充電スイッチを短絡状態とし、それ以外の充電スイッチを開放状態とすることを特徴とする蓄電装置。 - 請求項1に記載の蓄電装置において、
前記変圧器は、双方向で電圧の昇圧または減圧が可能なものであることを特徴とする蓄電装置。 - 請求項4に記載の蓄電装置において、
前記直列体は、
前記蓄電池と直列に接続された第3の放電スイッチと、
前記複数の変圧器の前記1次側それぞれと直列に接続された複数の第4の放電スイッチと、
前記複数の変圧器の前記2次側それぞれと直列に接続された複数の第5の放電スイッチとを有し、
前記制御部は、不良であると判定された蓄電池がない場合、前記第3の放電スイッチを短絡状態とし、前記複数の第4の放電スイッチおよび前記第5の放電スイッチすべてを開放状態とし、また、不良であると判定された蓄電池がある場合、前記第3の放電スイッチ、該不良であると判定された蓄電池と接続されている前記変圧器の前記1次側および前記2次側とそれぞれ接続された前記第4の放電スイッチおよび前記第5の放電スイッチを開放状態とし、該変圧器以外の変圧器の前記1次側および前記2次側とそれぞれ接続された前記第4の放電スイッチおよび前記第5の放電スイッチを短絡状態とすることを特徴とする蓄電装置。 - 請求項1に記載の蓄電装置において、
前記1次側から入力される電圧に対する前記2次側から出力される電圧の比は、1つの前記直列体に属する前記蓄電池の数であることを特徴とする蓄電装置。 - 請求項1乃至6のいずれか1項に記載の蓄電装置において、
前記制御部は、前記電圧測定部が測定した電圧値と、あらかじめ設定された閾値とを比較し、該比較の結果に基づいて、前記不良であるかどうかを判定することを特徴とする蓄電装置。 - 請求項1乃至7のいずれか1項に記載の蓄電装置において、
前記制御部は、前記電圧測定部が測定した前記複数の蓄電池の電圧値を互いに比較し、該比較の結果に基づいて、前記不良であるかどうかを判定することを特徴とする蓄電装置。 - 請求項3に記載の蓄電装置において、
前記制御部は、前記蓄電池の充電時に、前記電圧測定部が測定した電圧値に基づいて前記蓄電池が不良予備軍であるかどうかを判定し、不良予備軍であると判定された蓄電池がある場合、不良予備軍であると判定された蓄電池と接続されている前記充電スイッチを短絡状態とし、それ以外の充電スイッチを開放状態とすることを特徴とする蓄電装置。 - 請求項9に記載の蓄電装置において、
前記制御部は、前記電圧測定部が測定した前記複数の蓄電池の電圧値を互いに比較し、該比較の結果に基づいて、前記不良予備軍であるかどうかを判定することを特徴とする蓄電装置。 - 請求項1乃至10のいずれか1項に記載の蓄電装置において、
前記蓄電池は、リチウムイオン二次電池であることを特徴とする蓄電装置。 - 請求項1乃至11のいずれか1項に記載の蓄電装置において、
前記蓄電池のそれぞれが、複数の蓄電池を直列に接続した電池グループであることを特徴とする蓄電装置。
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