JPWO2020116089A1 - 電池パック、電源システム - Google Patents
電池パック、電源システム Download PDFInfo
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- 238000007599 discharging Methods 0.000 claims abstract description 7
- 230000005856 abnormality Effects 0.000 claims description 50
- 238000001816 cooling Methods 0.000 claims description 26
- 230000002159 abnormal effect Effects 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 15
- 230000008859 change Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 description 39
- 239000007789 gas Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 12
- 239000002826 coolant Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
略密閉構造の電池パック(10)であって、
内圧が上昇した場合に内部のガスを排出するための開放部がそれぞれ設けられている複数のセル(11−16)と、
コントローラ(50)に信号線で接続された非復帰型の圧力スイッチ部(30、31)と、を含み、
前記圧力スイッチ部(30、31)は、前記電池パック(10)内の圧力が所定の圧力閾値を上回った場合、有意な状態から非有意な状態に不可逆的に変化することを特徴とする電池パック(10)。
これによれば、コントローラ(50)の負荷を上昇させずに、基本的に1つの圧力スイッチ部(30、31)で、セル(11−16)からのガス排出を高精度に検知することができる。
[項目2]
前記電池パック(10)内の圧力が所定の圧力を超えると作動する圧力開放機構(20)をさらに備え、
前記圧力スイッチ部(30、31)の状態が変化する圧力閾値は、前記圧力開放機構(20)の作動圧力よりも低い値に設定されることを特徴とする項目1に記載の電池パック(10)。
これによれば、圧力開放機構(20)が開放される前に、圧力スイッチ部(30、31)の状態を変化させることができる。
[項目3]
項目1または2に記載の電池パック(10)と、
前記圧力スイッチ部(30、31)に信号線で接続されたコントローラ(50)と、
を備える電源システム(1)。
これによれば、コントローラ(50)の負荷を上昇させずに、基本的に1つの圧力スイッチ部(30、31)で、セル(11−16)からのガス排出を高精度に検知することができる電源システム(1)を構築することができる。
[項目4]
前記コントローラ(50)は、前記圧力スイッチ部(30、31)が有意な状態から非有意な状態に変化したことをトリガとして、起動することを特徴とする電源システム(1)。
これによれば、コントローラ(50)がシャットダウン状態/スタンバイ状態であっても、リアルタイムにセル(11−16)からのガス排出を検知することができる。
[項目5]
前記コントローラ(50)は、前記圧力スイッチ部(30、31)が有意な状態から非有意な状態に変化したことを検知すると、前記電池パック(10)内の別のセンサ(40)の出力値を取得することを特徴とする項目3または4に記載の電源システム(1)。
これによれば、コントローラ(50)が電池パック(10)内のより詳細な状況を把握することができる。
[項目6]
前記電源システム(1)は、電動車両に搭載されており、
前記コントローラ(50)は、前記圧力スイッチ部(30、31)の状態に基づき、前記電池パック(10)が異常であると判定すると、車両側のコントローラ(2)に異常発生信号を送信し、
前記車両側のコントローラ(2)は、前記異常発生信号を受信すると、前記電動車両内のユーザインタフェース(3)に前記電池パック(10)の異常を報知させることを特徴とする項目3から5のいずれか1項に記載の電源システム(1)。
これによれば、乗員に電池パック(10)の異常を認識させることができる。
[項目7]
前記コントローラ(50)は、前記圧力スイッチ部(30、31)の状態に基づき、前記電池パック(10)が異常であると判定すると、前記電池パック(10)を冷却するための冷却装置(4)を作動させることを特徴とする項目3から6のいずれか1項に記載の電源システム(1)。
これによれば、電池パック(10)のセルの異常が、他のセルに拡大することを抑制することができる。
[項目8]
略密閉構造の電池パック(10)であって、
内圧が上昇した場合に内部のガスを排出するための開放部がそれぞれ設けられている複数のセル(11−16)と、
コントローラ(50)に信号線で接続された圧力スイッチ部(30、31)と、を含み、
前記圧力スイッチ部(30、31)は、前記電池パック(10)内の圧力が所定の圧力閾値を上回った場合、有意な状態から非有意な状態に変化するとともに、その状態の変化を前記信号線を介して前記コントローラ(50)に通知することを特徴とする電池パック(10)。
これによれば、コントローラ(50)の負荷を上昇させずに、基本的に1つの圧力スイッチ部(30、31)で、セル(11−16)からのガス排出を高精度にリアルタイムに検知することができる。
Claims (8)
- 略密閉構造の電池パックであって、
内圧が上昇した場合に内部のガスを排出するための開放部がそれぞれ設けられている複数のセルと、
コントローラに信号線で接続された非復帰型の圧力スイッチ部と、を含み、
前記圧力スイッチ部は、前記電池パック内の圧力が所定の圧力閾値を上回った場合、有意な状態から非有意な状態に不可逆的に変化することを特徴とする電池パック。 - 前記電池パック内の圧力が所定の圧力を超えると作動する圧力開放機構をさらに備え、
前記圧力スイッチ部の状態が変化する圧力閾値は、前記圧力開放機構の作動圧力よりも低い値に設定されることを特徴とする請求項1に記載の電池パック。 - 請求項1または2に記載の電池パックと、
前記圧力スイッチ部に信号線で接続されたコントローラと、
を備える電源システム。 - 前記コントローラは、前記圧力スイッチ部が有意な状態から非有意な状態に変化したことをトリガとして、起動することを特徴とする請求項3に記載の電源システム。
- 前記コントローラは、前記圧力スイッチ部が有意な状態から非有意な状態に変化したことを検知すると、前記電池パック内の別のセンサの出力値を取得することを特徴とする請求項3または4に記載の電源システム。
- 前記電源システムは、電動車両に搭載されており、
前記コントローラは、前記圧力スイッチ部の状態に基づき、前記電池パックが異常であると判定すると、車両側のコントローラに異常発生信号を送信し、
前記車両側のコントローラは、前記異常発生信号を受信すると、前記電動車両内のユーザインタフェースに前記電池パックの異常を報知させることを特徴とする請求項3から5のいずれか1項に記載の電源システム。 - 前記コントローラは、前記圧力スイッチ部の状態に基づき、前記電池パックが異常であると判定すると、前記電池パックを冷却するための冷却装置を作動させることを特徴とする請求項3から6のいずれか1項に記載の電源システム。
- 略密閉構造の電池パックであって、
内圧が上昇した場合に内部のガスを排出するための開放部がそれぞれ設けられている複数のセルと、
コントローラに信号線で接続された圧力スイッチ部と、を含み、
前記圧力スイッチ部は、前記電池パック内の圧力が所定の圧力閾値を上回った場合、有意な状態から非有意な状態に変化するとともに、その状態の変化を前記信号線を介して前記コントローラに通知することを特徴とする電池パック。
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