JP2022529310A - 二部分型の参照電極 - Google Patents
二部分型の参照電極 Download PDFInfo
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- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 29
- 239000003792 electrolyte Substances 0.000 claims abstract description 28
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 238000002847 impedance measurement Methods 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 23
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 21
- 239000010410 layer Substances 0.000 claims description 18
- 230000005284 excitation Effects 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000007747 plating Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 230000006866 deterioration Effects 0.000 abstract description 11
- 101100537098 Mus musculus Alyref gene Proteins 0.000 abstract 1
- 101100269674 Mus musculus Alyref2 gene Proteins 0.000 abstract 1
- 101150095908 apex1 gene Proteins 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 40
- 238000005259 measurement Methods 0.000 description 9
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- 239000004743 Polypropylene Substances 0.000 description 6
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- 239000004698 Polyethylene Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 238000009529 body temperature measurement Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000002800 charge carrier Substances 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 platinum metals Chemical class 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
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- 230000008901 benefit Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 210000001520 comb Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002405 diagnostic procedure Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000000157 electrochemical-induced impedance spectroscopy Methods 0.000 description 2
- 238000001566 impedance spectroscopy Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 229920006254 polymer film Polymers 0.000 description 2
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- 238000004544 sputter deposition Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013499 data model Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
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Abstract
Description
インピーダンス値は通常低く、例えば、ミリ・オームの範囲にある場合もある。温度を特定するためには、インピーダンスZを非常に高い精度で特定する必要がある。この目的のために、Z=U(t)/I(t)により、然るべく大きな励起電流が必要となるが、このことは逆に、所定の励起回路では、低いインピーダンス値が温度測定の精度を制限することを意味する。しかも、いずれの場合においても、セルの平均温度は特定されるものの、位置的な分解能を得ることは不可能である。
-導電体を有する第一の部分電極Ref1と;
-導電体を有する第二の部分電極Ref2と;
を有し、
前記二つの部分電極Ref1およびRef2は、電気的に互いに分離されて基板上に形成され且つ略一定の間隔d1を備えている。
(i)電解質の導電率を介した温度特定;
(ii)被覆層またはリチウムメッキの検出;および
(iii)ブロッキング電極を使用している場合に、交流信号に重畳する直流電圧信号も変えながらの、部分電極の界面における誘電特性に基づいた電解質中のLiイオン濃度の特定。
Claims (17)
- 二部分型の参照電極であって:
-導電体を有する第一の部分電極Ref1と;
-導電体を有する第二の部分電極Ref2と;
を有し、
前記二つの部分電極Ref1およびRef2は、電気的に互いに分離されて基板上に形成され且つ略一定の間隔d1を備えている二部分型の参照電極。 - 部分電極間の間隔d1が10μmから1mmである請求項1に記載の二部分型の参照電極。
- 部分電極Ref1およびRef2は、互いに対向しており、それぞれ略櫛状の形態を備え、櫛の歯は、一方の櫛の歯と他方の櫛の歯の間の間隔がそれぞれd1となるように互いに交互に噛み合っている請求項1または2に記載の二部分型の参照電極。
- 前記歯は、それぞれ略長方形の形態を備え、歯の先端が長方形の短辺に対応する請求項3に記載の二部分型の参照電極。
- 短辺の幅d2が10μmから1mmである請求項4に記載の二部分型の参照電極。
- 部分電極Ref1およびRef2は、金属導体から作製され、好ましくはニッケル、銅、銀または金から作製されている請求項1から5のいずれかに記載の二部分型の参照電極。
- 部分電極Ref1およびRef2は、10nmから5μmの層厚を備えている請求項1から5のいずれかに記載の二部分型の参照電極。
- リチウムイオン電池セル用の多孔質セパレータフィルムが基板としての役割をなす請求項1から7のいずれかに記載の二部分型の参照電極。
- 部分電極Ref1およびRef2は、セパレータ基板フィルムとセパレータ被覆フィルムの間に埋め込まれている請求項8に記載の二部分型の参照電極。
- 部分電極Ref1およびRef2と周囲との間の電荷交換を可能にするノンブロッキング電極として構成されている請求項1から9のいずれかに記載の二部分型の参照電極。
- 部分電極Ref1およびRef2と周囲との間の電荷交換が遮断されているブロッキング電極として構成されている請求項1から9のいずれかに記載の二部分型の参照電極。
- 請求項1から11のいずれかに記載の一つ若しくは複数の参照電極が上に形成されているリチウムイオン電池セル用のセパレータフィルム。
- リチウムイオン電池セルのインピーダンス測定用の請求項1から11のいずれかに記載の参照電極の使用方法であって、部分電極Ref1とRef2の間に励起信号が印加され、応答信号が検出される使用方法。
- 参照電極は、さらに、リチウムイオン電池セルのアノード及び/又はカソードに対するハーフセル電圧の測定のために使用される請求項13に記載の使用方法。
- リチウムイオン電池セルの温度を特定するための請求項13に記載の使用方法であって、以下の少なくとも一つの特性を特定するためにインピーダンス測定の結果が使用される使用方法:
(i)温度特定;
(ii)被覆層またはリチウムメッキの検出;および
(iii)電解質中のLiイオン濃度の特定。 - 少なくとも一つのアノード、カソード、セパレータ、電解質および請求項1から11のいずれかに記載の参照電極を有するリチウムイオン電池セルにおけるインピーダンスを測定する方法であって:
-参照電極の二つの部分電極Ref1およびRef2の間に励起信号I(t)を印加し;
-参照電極の二つの部分電極Ref1およびRef2の間の応答信号U(t)を測定し;
-インピーダンスをZ=U(t)/I(t)として特定する
ことを含む方法。 - 少なくとも一つのアノード、カソード、セパレータ、電解質および請求項1から11のいずれかに記載の一つ若しくは複数の参照電極を有するリチウムイオン電池セル。
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PCT/EP2020/058540 WO2020201009A1 (de) | 2019-04-04 | 2020-03-26 | Zweiteilige referenzelektrode |
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AU2002363342A1 (en) * | 2001-11-01 | 2003-05-19 | Mir-Chem Gmbh | Device and method for the temporally and spatially dependent measuring of an operating parameter of an electrochemical cell |
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US9035619B2 (en) * | 2012-05-24 | 2015-05-19 | Datang Nxp Semiconductors Co., Ltd. | Battery cell temperature detection |
US9379418B2 (en) | 2013-06-20 | 2016-06-28 | Hrl Laboratories, Llc | Battery with reference electrode for voltage monitoring |
KR101708885B1 (ko) * | 2013-10-14 | 2017-02-21 | 주식회사 엘지화학 | 혼합 양극재를 포함하는 이차 전지의 상태 추정 장치 및 그 방법 |
DE102014001260A1 (de) * | 2014-01-30 | 2015-07-30 | Hella Kgaa Hueck & Co. | Batterie und Verfahren zur Bestimmung des Alterungszustandes einer Batterie |
JP2015191878A (ja) * | 2014-03-31 | 2015-11-02 | 株式会社日立製作所 | リチウムイオン二次電池システムおよびリチウムイオン二次電池の状態診断方法 |
KR101648383B1 (ko) * | 2014-09-19 | 2016-08-24 | 한국과학기술연구원 | 교차전극 바이오센서 |
JP6470022B2 (ja) * | 2014-11-20 | 2019-02-13 | エイブリック株式会社 | 電池残量予測装置及びバッテリパック |
DE102016207926A1 (de) * | 2016-05-09 | 2017-11-09 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Vorrichtung zum Betrieb einer Energiespeicherzelle, Batteriemodul und Fahrzeug |
KR102038611B1 (ko) * | 2016-10-25 | 2019-10-30 | 주식회사 엘지화학 | 이차 전지 및 그것의 수명 예측 장치 |
JP6612720B2 (ja) * | 2016-11-28 | 2019-11-27 | 本田技研工業株式会社 | 二次電池 |
DE102018003703A1 (de) * | 2018-05-08 | 2019-01-24 | Daimler Ag | Elektrochemische Speicherzelle |
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