JP7429722B2 - 蓄電デバイスの箔位置特定方法及び蓄電デバイスの箔間距離算出方法 - Google Patents
蓄電デバイスの箔位置特定方法及び蓄電デバイスの箔間距離算出方法 Download PDFInfo
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- 239000011888 foil Substances 0.000 title claims description 264
- 238000000034 method Methods 0.000 title claims description 56
- 230000005611 electricity Effects 0.000 title claims description 29
- 238000010521 absorption reaction Methods 0.000 claims description 58
- 238000004458 analytical method Methods 0.000 claims description 21
- 238000004364 calculation method Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 101100224419 Caenorhabditis elegans dpf-2 gene Proteins 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 101100170991 Caenorhabditis elegans dpf-6 gene Proteins 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000012887 quadratic function Methods 0.000 description 2
- 229910013292 LiNiO Inorganic materials 0.000 description 1
- 229910001228 Li[Ni1/3Co1/3Mn1/3]O2 (NCM 111) Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 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
- 238000002591 computed tomography Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
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- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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Description
このため、X線CT解析で得られた各位置のX線吸収量から、正極板について箔位置特定工程を行い、(X線吸収量が大きな値となる)正極板の正極層の位置から、(例えば2つの正極層に挟まれた)正極箔の正極箔位置を特定することは比較的容易となる。しかし、負極板について箔位置特定工程を行っても、(X線吸収量が小さな値となる)負極板の負極層の位置から、(例えば2つの負極層に挟まれた)負極箔の負極箔位置を特定することは、比較的困難となる場合が有る。
21 正極板(電極板)
22 正極箔
23a,23b 正極層
23at,23bt (正極層の)厚み
25 負極板(電極板)
26 負極箔
27a,27b 負極層
P(r,θ,z) 位置
AB(r,θ,z) X線吸収量
HT 特定仮想軌跡
d 軌跡上位置
AB(d) 軌跡上X線吸収量
AF,AF1,AF2,…,AF6,…,AF9 フィッティング領域
FC,FC6 近似曲線
FCP,FCP6 (近似曲線の)単一ピーク
dpf,dpf1,dpf2,…,dpf6,…,dpf8 (正極箔の)箔位置
dnf,dnf1,dnf2,…,dnf7 (負極箔の)箔位置
DP,DP1,DP2,…,DP7 (正極箔同士の)箔間距離
S1 解析工程
S2 取得工程
S3 正極箔位置特定工程(箔位置特定工程)
S32 フィッティング工程
S33 正極箔位置推定工程(箔位置推定工程)
S4 負極箔位置推定工程(他方極箔位置推定工程)
S5 箔間距離算出工程
Claims (4)
- 蓄電デバイスのX線CT解析を行って、上記蓄電デバイスの各位置におけるX線吸収量を取得する解析工程と、
取得した上記X線吸収量から、上記蓄電デバイスの電極板を貫通する特定仮想軌跡上の各軌跡上位置における上記X線吸収量である軌跡上X線吸収量を取得する取得工程と、
取得した上記軌跡上X線吸収量から、上記特定仮想軌跡が貫通する上記電極板の電極箔の箔位置を特定する箔位置特定工程とを備え、
上記箔位置特定工程は、
上記特定仮想軌跡のうち、単一の上記電極箔を内部に含むフィッティング領域内における上記軌跡上X線吸収量の変化に対して、これにフィットして変化し、かつ、上記フィッティング領域内に単一ピークを生じる近似曲線を定めるフィッティング工程、及び、
上記特定仮想軌跡の上記フィッティング領域のうち、定められた上記近似曲線における上記単一ピークに対応する上記軌跡上位置を、上記単一の電極箔の上記箔位置と推定する箔位置推定工程を有する
蓄電デバイスの箔位置特定方法。 - 請求項1に記載の蓄電デバイスの箔位置特定方法であって、
前記特定仮想軌跡は、
直線で、かつ、上記特定仮想軌跡が貫通する前記電極板の前記電極箔に対し垂直に貫通する仮想軌跡であり、
上記電極板は、
上記電極箔の両面に同厚みの電極層を有しており、
前記フィッティング工程の前記近似曲線は、
前記単一ピークに対応する前記軌跡上位置を中心として、対称な曲線である
蓄電デバイスの箔位置特定方法。 - 請求項1又は請求項2に記載の蓄電デバイスの箔位置特定方法であって、
前記電極板は、正極板及び負極板のうち、一方極の電極板であり、
前記電極箔は、正極箔及び負極箔のうち、一方極の電極箔であり、
前記特定仮想軌跡は、上記一方極の電極箔を複数貫いており、
前記箔位置特定工程は、
前記フィッティング工程及び前記箔位置推定工程を、各々の上記一方極の電極箔について行い、上記一方極の電極箔の前記箔位置を、各々の上記一方極の電極箔について特定し、
隣り合う上記一方極の電極箔について特定した一対の上記箔位置から、上記隣り合う上記一方極の電極箔の同士の間に位置する他方極の電極箔の箔位置を推定する他方極箔位置推定工程を更に備える
蓄電デバイスの箔位置特定方法。 - 請求項1~請求項3のいずれか1項に記載の蓄電デバイスの箔位置特定方法により特定した前記電極箔の前記箔位置を用いて、異極を介して隣り合う同極の又は隣り合う異極の上記電極箔間の箔間距離を算出する箔間距離算出工程を備える
蓄電デバイスの箔間距離算出方法。
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JP2022009417A JP7429722B2 (ja) | 2022-01-25 | 2022-01-25 | 蓄電デバイスの箔位置特定方法及び蓄電デバイスの箔間距離算出方法 |
EP22207843.8A EP4215906A1 (en) | 2022-01-25 | 2022-11-16 | Method for identifying foil position in power storage device and method for calculating inter-foil distance in power storage device |
US18/058,269 US20230236139A1 (en) | 2022-01-25 | 2022-11-23 | Method for identifying foil position in power storage device and method for calculating inter-foil distance in power storage device |
CN202211548548.0A CN116499399A (zh) | 2022-01-25 | 2022-12-05 | 蓄电设备的箔位置确定方法和蓄电设备的箔间距离计算方法 |
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JP2006134697A (ja) | 2004-11-05 | 2006-05-25 | Ngk Spark Plug Co Ltd | リチウムイオン二次電池 |
JP2013229189A (ja) | 2012-04-26 | 2013-11-07 | Hitachi High-Technologies Corp | 試料の寸法測定方法、および荷電粒子線装置 |
WO2020031431A1 (ja) | 2018-08-09 | 2020-02-13 | 株式会社村田製作所 | 二次電池、電池パック、電動車両、電力貯蔵システム、電動工具および電子機器 |
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JP5502132B2 (ja) * | 2012-04-20 | 2014-05-28 | Ckd株式会社 | 検査装置 |
CN107112578B (zh) * | 2015-01-13 | 2019-07-05 | 艾利电力能源有限公司 | 电极层叠体中的电极板的位置偏移检测方法以及其装置 |
CN112534617B (zh) * | 2018-08-09 | 2024-04-19 | 株式会社村田制作所 | 二次电池、电池包、电动车辆、蓄电***、电动工具及电子设备 |
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JP2006134697A (ja) | 2004-11-05 | 2006-05-25 | Ngk Spark Plug Co Ltd | リチウムイオン二次電池 |
JP2013229189A (ja) | 2012-04-26 | 2013-11-07 | Hitachi High-Technologies Corp | 試料の寸法測定方法、および荷電粒子線装置 |
WO2020031431A1 (ja) | 2018-08-09 | 2020-02-13 | 株式会社村田製作所 | 二次電池、電池パック、電動車両、電力貯蔵システム、電動工具および電子機器 |
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EP4215906A1 (en) | 2023-07-26 |
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