JP2019096461A - 蓄電装置及びその使用方法 - Google Patents
蓄電装置及びその使用方法 Download PDFInfo
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- JP2019096461A JP2019096461A JP2017224617A JP2017224617A JP2019096461A JP 2019096461 A JP2019096461 A JP 2019096461A JP 2017224617 A JP2017224617 A JP 2017224617A JP 2017224617 A JP2017224617 A JP 2017224617A JP 2019096461 A JP2019096461 A JP 2019096461A
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- internal pressure
- power storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
Description
図1の蓄電装置10は、蓄電素子11、測定部12、発信部13及び表示部14を備える。
蓄電素子11は、正極、負極及び非水電解質を有する非水電解質蓄電素子である。以下、蓄電素子11の一例として、非水電解質二次電池について説明する。上記正極及び負極は、通常、セパレータを介して積層又は巻回により交互に重畳された電極体を形成する。この電極体はケースに収納され、このケース内に上記非水電解質が充填される。上記非水電解質は、正極と負極との間に介在する。また、上記ケースとしては、二次電池のケースとして通常用いられる公知の金属ケース、樹脂ケース等を用いることができる。
上記正極は、正極基材、及びこの正極基材に直接又は中間層を介して配される正極活物質層を有する。
上記負極は、負極基材、及びこの負極基材に直接又は中間層を介して配される負極活物質層を有する。上記中間層は正極の中間層と同様の構成とすることができる。
上記セパレータの材質としては、例えば織布、不織布、多孔質樹脂フィルム等が用いられる。これらの中でも、強度の観点から多孔質樹脂フィルムが好ましく、非水電解質の保液性の観点から不織布が好ましい。上記セパレータの主成分としては、強度の観点から例えばポリエチレン、ポリプロピレン等のポリオレフィンが好ましく、耐酸化分解性の観点から例えばポリイミドやアラミド等が好ましい。また、これらの樹脂を複合してもよい。また、樹脂製の基材の表面に無機層が積層されたセパレータを用いることもできる。
上記非水電解質は、非水溶媒と、この非水溶媒に溶解する電解質塩とを含む。上記非水電解質には、その他の添加剤が含有されていてもよい。
測定部12は、圧力センサ15、電流センサ16及び演算部17を備える。圧力センサ15及び電流センサ16は演算部17に接続されている。
表示部14は、発信部13からの信号に基づき、充電率が少なくなったこと等を表示する。具体的には、表示部14は、演算部17が算出した、内圧変化率、充電率、主の放電反応が炭素材料又はケイ素材料のどちらの放電反応によるものか、及び充電率が少なくなったことに係る情報を表示することができる。
以下に、図1の蓄電装置10の使用方法として、本発明の一実施形態に係る蓄電装置の使用方法について説明する。
本発明は上記実施形態に限定されるものではなく、上記態様の他、種々の変更、改良を施した態様で実施することができる。例えば、上記実施の形態においては、蓄電素子が非水電解質二次電池である形態を中心に説明したが、その他の蓄電素子であってもよい。その他の蓄電素子としては、キャパシタ(電気二重層キャパシタ、リチウムイオンキャパシタ)や、水を電解質に含む蓄電素子等が挙げられる。
11、22 蓄電素子
12 測定部
13 発信部
14 表示部
15、23 圧力センサ
16 電流センサ
17 演算部
18a、18b 拘束板
Claims (4)
- 炭素材料とケイ素材料とを含有する負極を有する蓄電素子、及び
上記蓄電素子の内圧変化率を測定する測定部
を備える蓄電装置。 - 上記測定部によって測定された内圧変化率が所定の閾値以上となった時点、又は上昇し始めた時点で信号を発信する発信部
をさらに備える請求項1の蓄電装置。 - 炭素材料とケイ素材料の合計に対するケイ素材料の割合が、10質量%以下である請求項1又は請求項2の蓄電装置。
- 上記蓄電素子の内圧変化率を測定しながら放電を行うこと
を備える請求項1から請求項3のいずれか1項の蓄電装置の使用方法。
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PCT/EP2018/081499 WO2019101632A1 (en) | 2017-11-22 | 2018-11-16 | Energy storage apparatus and method of using the same |
EP18807249.0A EP3659197B1 (en) | 2017-11-22 | 2018-11-16 | Energy storage apparatus and method of using the same |
US16/640,676 US11621130B2 (en) | 2017-11-22 | 2018-11-16 | Energy storage apparatus and method of using the same |
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