Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP6402308B2 - Method and apparatus for detecting displacement of electrode plate in electrode laminate - Google Patents
[go: Go Back, main page]

JP6402308B2 - Method and apparatus for detecting displacement of electrode plate in electrode laminate - Google Patents

Method and apparatus for detecting displacement of electrode plate in electrode laminate Download PDF

Info

Publication number
JP6402308B2
JP6402308B2 JP2016569358A JP2016569358A JP6402308B2 JP 6402308 B2 JP6402308 B2 JP 6402308B2 JP 2016569358 A JP2016569358 A JP 2016569358A JP 2016569358 A JP2016569358 A JP 2016569358A JP 6402308 B2 JP6402308 B2 JP 6402308B2
Authority
JP
Japan
Prior art keywords
positive electrode
ray
electrode plate
negative electrode
active material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2016569358A
Other languages
Japanese (ja)
Other versions
JPWO2016114257A1 (en
Inventor
尋史 佐藤
尋史 佐藤
坂田　卓也
卓也 坂田
正治 篠原
正治 篠原
宏 小湊
宏 小湊
陽平 山影
陽平 山影
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba IT and Control Systems Corp
Eliiy Power Co Ltd
Original Assignee
Toshiba IT and Control Systems Corp
Eliiy Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba IT and Control Systems Corp, Eliiy Power Co Ltd filed Critical Toshiba IT and Control Systems Corp
Publication of JPWO2016114257A1 publication Critical patent/JPWO2016114257A1/en
Application granted granted Critical
Publication of JP6402308B2 publication Critical patent/JP6402308B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Signal Processing (AREA)
  • Toxicology (AREA)
  • Secondary Cells (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Description

本発明は電極積層体における電極板の位置ずれ検出方法およびその装置に関し、特にスタック型のリチウムイオン電池の製造工程に適用して有用なものである。   The present invention relates to a method and apparatus for detecting displacement of an electrode plate in an electrode laminate, and is particularly useful when applied to a manufacturing process of a stack type lithium ion battery.

リチウムイオン二次電池の一種として、正電極板と負電極板とを絶縁体のセパレータを介して交互に積層したスタック構造の電極積層体がある。   As one type of lithium ion secondary battery, there is an electrode laminate having a stack structure in which positive electrode plates and negative electrode plates are alternately laminated via an insulating separator.

図４はスタック構造のリチウムイオン二次電池の正電極板を示す図で、（ａ）はその平面図、（ｂ）はその側面図、図５は負電極板を示す図で、（ａ）はその平面図、（ｂ）はその側面図である。図４に記載する通り、正電極板１は、正電極シート３の両面上にそれぞれ正極活物質５を塗布して形成してあり、その端部（図４では左端部）には正極接続端子（図示せず）に接続するための正極側接続部７が形成されている。正極側接続部７は正極活物質５が塗布されていないタブとなっている。正電極シート３は、電気伝導性を有し、表面上に正極活物質５を塗布することができれば、特に限定されないが、アルミ箔が汎用されている。   4A and 4B are diagrams showing a positive electrode plate of a lithium ion secondary battery having a stack structure, where FIG. 4A is a plan view thereof, FIG. 4B is a side view thereof, and FIG. 5 is a diagram showing a negative electrode plate. Is a plan view thereof, and (b) is a side view thereof. As shown in FIG. 4, the positive electrode plate 1 is formed by applying the positive electrode active material 5 on both surfaces of the positive electrode sheet 3, and a positive electrode connection terminal at the end (left end in FIG. 4). A positive electrode side connection portion 7 for connection to (not shown) is formed. The positive electrode side connection portion 7 is a tab to which the positive electrode active material 5 is not applied. Although the positive electrode sheet 3 has electrical conductivity and is not particularly limited as long as the positive electrode active material 5 can be applied on the surface, aluminum foil is widely used.

一方、図５に示すように、負電極板２は、負電極シート４の両面上にそれぞれ負極活物質６を塗布して形成してあり、その端部（図５では右端部）には負極接続端子（図示せず）に接続するための負極側接続部８が形成されている。負極側接続部８は負極活物質６が塗布されていないタブとなっている。負電極シート４は、電気伝導性を有し、表面上に負極活物質６を塗布することができれば、特に限定されないが、銅箔が汎用されている。   On the other hand, as shown in FIG. 5, the negative electrode plate 2 is formed by applying a negative electrode active material 6 on both surfaces of the negative electrode sheet 4, and a negative electrode is formed at its end (right end in FIG. 5). A negative electrode side connection portion 8 for connection to a connection terminal (not shown) is formed. The negative electrode side connection portion 8 is a tab to which the negative electrode active material 6 is not applied. Although the negative electrode sheet 4 has electrical conductivity and is not particularly limited as long as the negative electrode active material 6 can be applied on the surface, copper foil is widely used.

かかる正、負電極板１、２は、図６に示すように、例えば、ジグザグ折りした絶縁体のセパレータ９を挟んで相対向するようにセパレータ９の各谷溝９Ａに挿入され、その後上下方向から押圧して図７に示すスタック状の電極積層体Ｉに成型される。   As shown in FIG. 6, the positive and negative electrode plates 1 and 2 are inserted into the valley grooves 9A of the separator 9 so as to face each other with the insulator separator 9 zigzag-folded therebetween, and then vertically To form a stacked electrode laminate I shown in FIG.

かかる電極積層体Ｉにおいて、セパレータ９の幅方向の一端部から突出する複数の正極側接続部７およびセパレータ９の他端部から突出する複数の負極側接続部８は、次工程で図示されていない正極接続端子および負極接続端子と接続される。   In the electrode laminate I, a plurality of positive electrode side connection portions 7 protruding from one end portion in the width direction of the separator 9 and a plurality of negative electrode side connection portions 8 protruding from the other end portion of the separator 9 are illustrated in the next step. Not connected with positive connection terminal and negative connection terminal.

ところで、電極積層体Ｉにおける正電極板１と負電極板２間の積層状態でのズレは、例えば電極間でのショート等、種々の問題を生起する原因となる。そこで、各正電極板１と負電極板２との間のズレ量が規定値内に収まるように品質を管理する必要がある。   By the way, the deviation in the laminated state between the positive electrode plate 1 and the negative electrode plate 2 in the electrode laminate I causes various problems such as a short circuit between the electrodes. Therefore, it is necessary to manage the quality so that the amount of deviation between each positive electrode plate 1 and negative electrode plate 2 falls within a specified value.

この点に鑑み、従来からＸ線を利用して非破壊検査で電極積層体Ｉにおける電極板（正電極板１と負電極板２）の位置ずれを検出する位置ずれ検出が行われている。   In view of this point, displacement detection for detecting the displacement of the electrode plates (the positive electrode plate 1 and the negative electrode plate 2) in the electrode laminate I has been conventionally performed by non-destructive inspection using X-rays.

図８は従来技術に係るＸ線を利用した位置ずれ検出の態様を概念的に示す図であり、（ａ）は平面的に見た模式図、（ｂ）は端面側から見た模式図である。両図に示すように、セパレータ９の一端面側の所定のＡ領域（正極側接続部７と正極活物質５との境界部分を含む領域）において電極積層体Ｉの幅方向（図中のＹ軸方向）にＸ線を照射することにより得るＸ線画像に基づき負電極板２の正極側の端部の位置（負極側接続部８の反対側における負極電極端位置（負極活物質６の塗工端））を検出する。同時に、セパレータ９の他端面側の所定のＢ領域（負極側接続部８と負極活物質６との境界部分を含む領域）において、同様に電極積層体Ｉの幅方向（図中のＹ軸方向）にＸ線を照射することにより得るＸ線画像に基づき正電極板１の負極側の端部の位置（正極側接続部７の反対側における正極電極端位置（正極活物質５の塗工端））を検出する。このようにして求めた、負電極板２の正極側接続部７側の端部の位置、正電極板１の負極側接続部８側の端部の位置、正極側接続部７の端部の位置、負極側接続部８の端部の位置等の情報から演算により積層される正電極板１間の距離、積層される負電極板２間の距離、積層される正電極板１と負電極板２との距離を求め、設計値として与えられる基準値と比較して正電極板１と負電極板２との位置ずれを検出する。   FIGS. 8A and 8B are diagrams conceptually showing a position shift detection mode using X-rays according to the prior art, in which FIG. 8A is a schematic view seen from the top, and FIG. 8B is a schematic view seen from the end face side. is there. As shown in both figures, the width direction (Y in the figure) of the electrode laminate I in a predetermined A region (a region including the boundary portion between the positive electrode side connecting portion 7 and the positive electrode active material 5) on one end face side of the separator 9 is shown. Based on the X-ray image obtained by irradiating X-rays in the axial direction, the position of the positive electrode end of the negative electrode plate 2 (negative electrode end position on the opposite side of the negative electrode connecting portion 8 (coating of the negative electrode active material 6) Detect the work end)). At the same time, similarly in the predetermined B region on the other end surface side of the separator 9 (region including the boundary portion between the negative electrode side connecting portion 8 and the negative electrode active material 6), the width direction of the electrode laminate I (the Y axis direction in the drawing) ) Based on the X-ray image obtained by irradiating X-rays to the position of the negative electrode side end of the positive electrode plate 1 (positive electrode end position on the opposite side of the positive electrode side connecting portion 7 (coating end of the positive electrode active material 5) )) Is detected. The position of the end of the negative electrode plate 2 on the positive electrode side connecting portion 7 side, the position of the end of the positive electrode plate 1 on the negative electrode side connecting portion 8 side, the end of the positive electrode side connecting portion 7 obtained in this way The distance between the positive electrode plates 1 stacked by calculation from information such as the position, the position of the end of the negative electrode side connecting portion 8, the distance between the negative electrode plates 2 stacked, the positive electrode plate 1 and the negative electrode stacked A distance from the plate 2 is obtained, and a positional deviation between the positive electrode plate 1 and the negative electrode plate 2 is detected by comparison with a reference value given as a design value.

なお、Ｘ線を利用して電極板の位置を検出する点を開示する公知文献として特許文献１がある。   Note that there is Patent Document 1 as a known document disclosing the point of detecting the position of an electrode plate using X-rays.

特開２０１１−０３９０１４号公報JP 2011-039014 A

しかしながら、上述の如き従来技術に係る検査方法では、正、負電極板１，２の両端部において２回の同様の検査を行なう必要があり、当然のことながら、検査のタクトタイムが長くなるという問題を有していた。そこで、正、負電極板１，２の何れか一方の端部に対するＸ線による検査で必要な位置の情報を得ることを試みた。具体的には、Ａ領域（正極側接続部７側）にＸ線照射することで、正極側のタブである正極側接続部７の先端と、負電極板２における負極側のタブと反対側の端部との距離あるいは、Ｂ領域（負極側接続部８側）にＸ線照射して、負極側のタブである負極側接続部８の先端と、正電極板１における正極側のタブと反対側の端部との距離を検出して位置ずれの検出の可否を調べた。この結果、正極側接続部７はアルミ箔であり、負極側接続部８は銅箔であるので、ともに剛性に乏しく先端部が垂れ下がってしまう。この結果、所望の精度での距離検出は困難であることが判明した。また、一方の電極板における活物質層とタブ部との境界位置と他方の電極板におけるタブと反対側の端部との距離を検出するにしても、Ｘ線画像におけるタブ部と活物質層との境目を検出することが困難であった。ただ、試行錯誤する中で、検査用のＸ線の強度を増大させた場合、アルミ箔で形成された正極側接続部７のＸ線画像は、所定のＡ領域の全体的なＸ線画像から除去する（Ｘ線画像としては残さない）ことが可能であるという新たな知見を得た。 However, in the inspection method according to the prior art as described above, it is necessary to perform the same inspection twice at both ends of the positive and negative electrode plates 1 and 2, and naturally, the tact time of the inspection is increased. Had a problem. Therefore, an attempt was made to obtain information on a necessary position by X-ray inspection on either one of the positive and negative electrode plates 1 and 2. Specifically, by irradiating the A region (positive electrode side connecting portion 7 side) with X-rays, the tip of the positive electrode side connecting portion 7 which is a tab on the positive electrode side, and the side opposite to the tab on the negative electrode side in the negative electrode plate 2 distance Alternatively, X-ray irradiation in the B region (negative electrode side connection portion 8 side), and the tip of the negative electrode side connection portion 8 which is the tab of negative electrode, the positive electrode side of the positive electrode plate 1 tab of the end portion The distance from the opposite end was detected to determine whether or not misalignment could be detected. As a result, since the positive electrode side connecting portion 7 is an aluminum foil and the negative electrode side connecting portion 8 is a copper foil, both of them are poor in rigidity and the tip portion hangs down. As a result, it has been found that distance detection with a desired accuracy is difficult. Further, even when the distance between the boundary position between the active material layer and the tab portion on one electrode plate and the end portion on the opposite side of the tab on the other electrode plate is detected, the tab portion and the active material layer in the X-ray image are detected. It was difficult to detect the boundary. However, when the intensity of the X-ray for inspection is increased through trial and error, the X-ray image of the positive electrode side connection portion 7 formed of aluminum foil is derived from the entire X-ray image of a predetermined area A. New knowledge was obtained that it is possible to remove (not leave as an X-ray image).

そこで、Ｘ線の強度を増加させてアルミ箔で形成された正極側接続部７のＸ線画像を消すことにより、所定のＡ領域のＸ線画像だけで位置ずれを検出することに思い至った。   Therefore, the inventor has come up with the idea of detecting a position shift only by an X-ray image of a predetermined area A by deleting the X-ray image of the positive electrode side connection portion 7 formed of aluminum foil by increasing the intensity of the X-ray. .

本発明は、上記知見に基づき、電極板の一端部のＸ線画像情報のみで電極板の位置ずれを適切かつ高精度に検出することにより当該検査のタクトタイムを短縮することができる電極積層体における電極板の位置ずれ検出方法およびその装置を提供することを目的とする。   Based on the above knowledge, the present invention provides an electrode laminate capable of shortening the tact time of the inspection by appropriately detecting the positional deviation of the electrode plate with high accuracy only by the X-ray image information at one end of the electrode plate. It is an object of the present invention to provide a method and an apparatus for detecting a displacement of an electrode plate.

上記目的を達成する本発明の第１の態様は、アルミ箔で形成した正電極シートの両面上にそれぞれ正極活物質を塗布して形成した正電極板と、他の金属箔で形成した負電極シートの両面上にそれぞれ負極活物質を塗布して形成した負電極板と絶縁体のセパレータを介して交互に積層した電極積層体の前記セパレータの幅方向の一端面から突出する前記正極活物質の未塗工部分である前記アルミ箔の正極側接続部を含む前記電極積層体の一端面側の所定の領域に向けてＸ線を照射してＸ線画像を撮像するとともに、前記Ｘ線画像に前記アルミ箔が写らないように前記Ｘ線の強度を調整し、前記Ｘ線画像における前記正極側接続部との境界である正極活物質の塗工端の位置と、前記一端面側の負電極板の端面の位置とを特定し、前記塗工端の位置と、前記一端面側の負電極板の端面の位置に基づき前記正電極板と前記負電極板との位置ずれを検出することを特徴とする電極積層体における電極板の位置ずれ検出方法にある。 The first aspect of the present invention that achieves the above object is to provide a positive electrode plate formed by applying a positive electrode active material on both sides of a positive electrode sheet formed of aluminum foil, and a negative electrode formed of another metal foil. The positive electrode active material projecting from one end face in the width direction of the separator of the electrode laminate laminated alternately via negative electrode plates and insulator separators formed on both surfaces of the sheet, respectively. The X-ray image is taken by irradiating X-rays toward a predetermined region on one end face side of the electrode laminate including the positive electrode side connection portion of the aluminum foil which is an uncoated portion, and the X-ray image The intensity of the X-ray is adjusted so that the aluminum foil does not appear, the position of the coating end of the positive electrode active material that is the boundary with the positive electrode side connection portion in the X-ray image, and the negative electrode on the one end face side The position of the end face of the plate is specified, and the position of the coating end , In the position deviation detecting method of an electrode plate in the electrode stack and detecting the positional deviation of the basis of the position of the end surface of the negative collector plates of the one end face side is positive electrode plate and the negative electrode plate.

本態様によれば、電極積層体の幅方向の一端側である正極側の一箇所でＸ線画像を得ているので、電極板の位置ずれ検査におけるタクトタイムを従来より短縮することができる。ここで、検査に当たって基準としている位置には、正極側接続部との境界である正極活物質の塗工端および負電極板の正極側接続部の側の端面が含まれる。すなわち、何れもリジッドな部位の位置であるばかりでなく、かかる位置検出のノイズとなる可能性があるアルミ箔である正極側接続部はＸ線画像から除去することで、検出基準となる位置をＸ線画像上で明確に特定できるので、位置ずれも正確に検出することができる。   According to this aspect, since the X-ray image is obtained at one position on the positive electrode side, which is one end side in the width direction of the electrode stack, the tact time in the electrode plate misalignment inspection can be shortened compared to the prior art. Here, the reference positions in the inspection include the coating end of the positive electrode active material, which is a boundary with the positive electrode side connection portion, and the end surface on the positive electrode side connection portion side of the negative electrode plate. In other words, not only is the position of the rigid part, but the positive electrode side connection portion, which is an aluminum foil that may cause such position detection noise, is removed from the X-ray image, so that the position serving as the detection reference can be determined. Since it can be clearly identified on the X-ray image, it is possible to accurately detect a positional deviation.

本発明の第２の態様は、第１の態様に記載する電極板の位置ずれ検出方法において、前記Ｘ線は、Ｘ線管における管電圧を７０ｋＶ以上、管電流を２８０μＡ以上として得る強度であることを特徴とする電極積層体における電極板の位置ずれ検出方法にある。   According to a second aspect of the present invention, in the electrode plate misregistration detection method described in the first aspect, the X-ray has an intensity to obtain a tube voltage in the X-ray tube of 70 kV or more and a tube current of 280 μA or more. The electrode plate misalignment detection method in the electrode laminate is characterized by the above.

本態様によれば、アルミ箔である正極側接続部を所定のＸ線画像から確実に除去することができる。   According to this aspect, the positive electrode side connection part which is aluminum foil can be reliably removed from a predetermined X-ray image.

本発明の第３の態様は、アルミ箔で形成した正電極シートの両面上にそれぞれ正極活物質を塗布して形成した正電極板と、他の金属箔で形成した負電極シートの両面上にそれぞれ負極活物質を塗布して形成した負電極板とを絶縁体のセパレータを介して交互に積層した電極積層体における電極板の位置ずれ検出装置において、前記電極積層体の前記セパレータの幅方向の一端面から突出する前記正極活物質の未塗工部分である前記アルミ箔を挟んで配設されたＸ線照射部及びＸ線検出部と、演算処理部と、を有するとともに、前記Ｘ線照射部は、前記電極積層体の前記セパレータの幅方向の一端面から突出する前記正極活物質の未塗工部分である前記アルミ箔の正極側接続部を含む前記電極積層体の一端面側の所定の領域に前記アルミ箔を透過する強度のＸ線を照射し、前記Ｘ線検出部は、照射された前記Ｘ線を入射して前記所定の領域の画像を表すＸ線画像信号を生成し、前記演算処理部は、前記Ｘ線画像信号に基づき、前記正極側接続部との境界である正極活物質の塗工端の位置と、前記一端面側の負電極板の端面の位置とを特定し、前記一端面側の塗工端の位置と、前記負電極板の端面の位置に基づき正電極板と負電極板との前記電極積層体との位置ずれを検出する演算処理部を内蔵していることを特徴とする電極積層体における電極板の位置ずれ検出装置にある。 In the third aspect of the present invention, a positive electrode plate formed by applying a positive electrode active material on both sides of a positive electrode sheet formed of aluminum foil, and a negative electrode sheet formed of another metal foil, respectively. In the electrode plate misalignment detection apparatus in an electrode laminate in which negative electrode plates formed by applying a negative electrode active material are alternately laminated via an insulator separator, the separator of the electrode laminate in the width direction of the separator is provided. An X-ray irradiation unit and an X-ray detection unit disposed across the aluminum foil that is an uncoated portion of the positive electrode active material protruding from one end surface, and an arithmetic processing unit, and the X-ray irradiation The predetermined portion on the one end face side of the electrode laminate including the positive electrode side connecting portion of the aluminum foil that is an uncoated portion of the positive electrode active material protruding from one end face in the width direction of the separator of the electrode laminate Through the aluminum foil The X-ray detection unit generates the X-ray image signal representing the image of the predetermined region by entering the irradiated X-ray, and the arithmetic processing unit Based on the line image signal, the position of the coating end of the positive electrode active material that is the boundary with the positive electrode side connection portion and the position of the end surface of the negative electrode plate on the one end surface side are specified, and the coating on the one end surface side is specified. the position of the factory end, characterized that you have a built-in processing unit for detecting the positional deviation between the electrode laminate of the positive electrode plate and the negative electrode plate on the basis of the position of the end surface of the negative collector plate In the electrode plate misalignment detection device in the electrode stack.

本態様によれば、電極積層体の幅方向の一端側である正極側の一箇所に相対向して配設されたＸ線照射部およびＸ線検出部で所定のＸ線画像を得ているので、電極板の位置ずれ検査におけるタクトタイムを従来より短縮することができる。ここで、検査に当たってＸ線検出部における演算処理部でのズレ量の基準としている位置には、正極側接続部との境界である正極活物質の塗工端および負電極板の正極側の端面が含まれる。すなわち、何れもリジッドな位置であるばかりでなく、かかる位置検出のノイズとなる可能性があるアルミ箔である正極側接続部はＸ線画像から除去することで、検出基準となる位置をＸ線画像上で明確に特定できるので、ズレ量も正確に検出することができる。   According to this aspect, a predetermined X-ray image is obtained by the X-ray irradiator and the X-ray detector disposed opposite to each other at one position on the positive electrode side that is one end side in the width direction of the electrode stack. Therefore, the tact time in the electrode plate misalignment inspection can be shortened as compared with the prior art. Here, at the position used as a reference for the amount of deviation in the arithmetic processing unit in the X-ray detection unit at the time of inspection, the coating end of the positive electrode active material and the end surface on the positive electrode side of the negative electrode plate, which are boundaries with the positive electrode side connection unit Is included. In other words, not only is it a rigid position, but the positive electrode side connection portion, which is an aluminum foil that may cause such position detection noise, is removed from the X-ray image, so that the position serving as the detection reference is set to X-ray. Since it can be clearly identified on the image, the amount of deviation can also be accurately detected.

本発明の第４の態様は、第３の態様に記載する電極積層体における電極板の位置ずれ検出装置において、前記Ｘ線照射部においてＸ線を照射するＸ線管は、管電圧を７０ｋＶ以上、管電流を２８０μＡ以上としたことを特徴とする電極積層体における電極板の位置ずれ検出装置にある。   According to a fourth aspect of the present invention, in the electrode plate misalignment detecting device in the electrode laminate described in the third aspect, the X-ray tube that emits X-rays in the X-ray irradiation unit has a tube voltage of 70 kV or higher. In the electrode plate misalignment detecting device, the tube current is 280 μA or more.

本態様によれば、アルミ箔である正極側接続部を所定のＸ線画像から確実に除去することができる。   According to this aspect, the positive electrode side connection part which is aluminum foil can be reliably removed from a predetermined X-ray image.

本発明によれば、電極積層体の幅方向の一端側である正極側の一箇所でＸ線画像を得ているので、電極板の位置ずれ検査におけるタクトタイムを従来より短縮することができる。   According to the present invention, since an X-ray image is obtained at one position on the positive electrode side, which is one end side in the width direction of the electrode stack, the tact time in the electrode plate misregistration inspection can be shortened compared to the prior art.

本発明の実施の形態に係るＸ線検査装置をその検査態様とともに概念的に示す説明図である。It is explanatory drawing which shows notionally the X-ray inspection apparatus which concerns on embodiment of this invention with the test | inspection aspect. 本形態に係る位置ずれ検出方法により得られる正極側接続部側におけるＸ線画像の説明図である。It is explanatory drawing of the X-ray image in the positive electrode side connection part side obtained by the position shift detection method which concerns on this form. 図２の場合の実際のＸ線画像を示す写真である。It is a photograph which shows the actual X-ray image in the case of FIG. スタック構造のリチウムイオン二次電池の正電極板を示す図で、（ａ）はその平面図、（ｂ）はその側面図である。It is a figure which shows the positive electrode plate of the lithium ion secondary battery of a stack structure, (a) is the top view, (b) is the side view. スタック構造のリチウムイオン二次電池の負電極板を示す図で、（ａ）はその平面図、（ｂ）はその側面図である。It is a figure which shows the negative electrode plate of the lithium ion secondary battery of a stack structure, (a) is the top view, (b) is the side view. ジグザグ折りしたセパレータの各谷溝に電極板を挿入する場合の態様を示す説明図である。It is explanatory drawing which shows the aspect in the case of inserting an electrode plate in each trough of the separator zigzag folded. スタック構造の電極積層体を示す斜視図である。It is a perspective view which shows the electrode laminated body of a stack structure. 従来技術に係るＸ線を利用したズレ量検出の態様を概念的に示す図であり、（ａ）は平面的に見た模式図、（ｂ）は端面側から見た模式図である。It is a figure which shows notionally the aspect of the deviation | shift amount detection using the X-ray which concerns on a prior art, (a) is the schematic diagram seen planarly, (b) is the schematic diagram seen from the end surface side.

以下、本発明の実施の形態を図面に基づき詳細に説明する。なお、図４〜図８と同一部分には同一番号を付し、重複する説明は省略する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same parts as those in FIGS. 4 to 8 are denoted by the same reference numerals, and redundant description is omitted.

図１は、本発明の実施の形態に係るＸ線検査装置をその検査態様とともに概念的に示す説明図である。同図に示すように、本形態におけるＸ線検査装置１０は、Ｘ線を図中のＹ軸方向に照射するＸ線照射部１１およびＸ線照射部１１が照射したＸ線を入射するＸ線検出部１２とを有する。ここで、Ｘ線照射部１１、Ｘ線検出部１２は、電極積層体Ｉのセパレータ９の幅方向（Ｘ軸方向）の一端面から突出する正極活物質５（例えば図４参照、以下同じ）の未塗工部分である正極側接続部７を挟んで一方側と反対側に配設されている。本形態における正極側接続部７はアルミ箔で形成されている。
FIG. 1 is an explanatory view conceptually showing an X-ray inspection apparatus according to an embodiment of the present invention together with its inspection mode. As shown in the figure, the X-ray inspection apparatus 10 according to this embodiment includes an X-ray irradiation unit 11 that irradiates X-rays in the Y-axis direction in the drawing, and an X-ray that enters the X-rays irradiated by the X-ray irradiation unit 11. And a detector 12. Here, the X-ray irradiation unit 11 and the X-ray detection unit 12 are the positive electrode active material 5 protruding from one end face in the width direction (X-axis direction) of the separator 9 of the electrode stack I (for example, see FIG. 4, the same applies hereinafter). It is arrange | positioned on the opposite side to one side on both sides of the positive electrode side connection part 7 which is an uncoated part. The positive electrode side connection part 7 in this embodiment is formed of aluminum foil.

かくしてＸ線照射部１１は、電極積層体Ｉのセパレータ９の幅方向の一端面から突出する正極活物質５の未塗工部分であるアルミ箔の正極側接続部７を含む電極積層体Ｉの一端面側の所定の領域Ａ（図８参照、以下同じ）に電極板の幅方向（図中のＹ軸方向）に向けてアルミ箔を透過する強度のＸ線を照射する。具体的には、Ｘ線照射部１１のＸ線管における管電圧を７０ｋＶ以上、管電流を２８０μＡ以上とする。この強度のＸ線であれば、アルミ箔である正極側接続部７を所定のＸ線画像から確実に除去することができるからである。   Thus, the X-ray irradiating part 11 is formed of the electrode laminated body I including the positive electrode side connecting part 7 of the aluminum foil which is an uncoated part of the positive electrode active material 5 protruding from one end face in the width direction of the separator 9 of the electrode laminated body I. A predetermined region A on one end face side (see FIG. 8, the same applies hereinafter) is irradiated with X-rays having an intensity that passes through the aluminum foil in the width direction (Y-axis direction in the drawing) of the electrode plate. Specifically, the tube voltage in the X-ray tube of the X-ray irradiation unit 11 is set to 70 kV or more, and the tube current is set to 280 μA or more. This is because the X-ray having this intensity can surely remove the positive electrode side connecting portion 7 which is an aluminum foil from a predetermined X-ray image.

一方、Ｘ線検出部１２は、照射されたＸ線を入射して所定の領域Ａの画像を表すＸ線画像信号を生成するとともに、内蔵している演算処理部１２Ａにおいて所定の演算を行い、正、負電極板１，２の相対的なズレ量を演算するなど、電極板に関する位置ずれ検出を行う。   On the other hand, the X-ray detection unit 12 enters the irradiated X-rays to generate an X-ray image signal representing an image of a predetermined region A, and performs a predetermined calculation in the built-in calculation processing unit 12A. The positional deviation detection with respect to the electrode plate is performed, for example, the relative displacement between the positive and negative electrode plates 1 and 2 is calculated.

かかる位置ずれの検出に関連し、図２を追加して、具体的に説明する。図２は、Ｘ線検出部１２で得られる正極側接続部側における所定の領域ＡのＸ線画像の説明図である。同図に示すように、当該Ｘ線画像では、アルミ箔である正極側接続部７の画像が完全に除去されている。Ｘ線がアルミ箔を完全に透過しているからである。なお、図２中には、点線で正極側接続部７を示している。また、正電極板１と負電極板２との間にはセパレータ９が存在しているが、図２に示すＸ線画像にセパレータは写り込まない。これは、セパレータ９が薄く、セパレータを構成する材料であるポリプロピレンなどがＸ線画像には写りにくいためである。この場合の実際のＸ線画像を表す写真を図３に示す。   A specific description will be given with reference to FIG. FIG. 2 is an explanatory diagram of an X-ray image of a predetermined region A on the positive electrode side connection unit side obtained by the X-ray detection unit 12. As shown in the figure, in the X-ray image, the image of the positive electrode side connection portion 7 that is an aluminum foil is completely removed. This is because X-rays are completely transmitted through the aluminum foil. In addition, in FIG. 2, the positive electrode side connection part 7 is shown with the dotted line. Moreover, although the separator 9 exists between the positive electrode plate 1 and the negative electrode plate 2, a separator is not reflected in the X-ray image shown in FIG. This is because the separator 9 is thin and polypropylene, which is a material constituting the separator, is difficult to appear in the X-ray image. A photograph showing an actual X-ray image in this case is shown in FIG.

Ｘ線検出部１２では、入射したＸ線に基づき生成したＸ線画像信号に基づき、正極側接続部７との境界である正極活物質５の塗工端の位置Ｐ１と、一端面側の負電極板２の端面の位置Ｐ２とを特定する。その後、位置Ｐ１，Ｐ２との差から正電極板１と負電極板２との電極積層体Ｉにおける相対的なズレ量を演算する。ここで、演算処理部１２Ａには、設計値に基づく位置Ｐ１，Ｐ２の許容誤差が予め記憶されているので、正電極板１と負電極板２との間でのズレ量が許容値内に収まっているか否かの判定も行っている。   In the X-ray detection unit 12, based on the X-ray image signal generated based on the incident X-ray, the position P 1 of the coating end of the positive electrode active material 5, which is a boundary with the positive electrode side connection unit 7, and the negative side on one end surface side. The position P2 of the end face of the electrode plate 2 is specified. Thereafter, the relative shift amount in the electrode laminate I between the positive electrode plate 1 and the negative electrode plate 2 is calculated from the difference between the positions P1 and P2. Here, since the allowable error of the positions P1 and P2 based on the design value is stored in advance in the arithmetic processing unit 12A, the amount of deviation between the positive electrode plate 1 and the negative electrode plate 2 is within the allowable value. Judgment is also made as to whether or not it is within.

本形態によれば、電極積層体Ｉの幅方向の一端側である正極側の一箇所に相対向して配設されたＸ線照射部１１およびＸ線検出部１２で所定のＸ線画像を得ているので、正、負電極板１、２の位置ずれ検査におけるタクトタイムを従来より短縮することができる。ここで、検査に当たってＸ線検出部における演算処理部でのズレ量の基準としている位置は、正極側接続部７との境界である正極活物質５の塗工端および負電極板２の正極側の端面である。すなわち、何れもリジッドな位置であるばかりでなく、かかる位置検出のノイズとなる可能性があるアルミ箔である正極側接続部７はＸ線画像から除去されているので、検出基準となる位置Ｐ１，Ｐ２をＸ線画像上で明確に特定できる。この結果、位置ずれも正確に検出することができる。また、積層された各負電極板２の端面の位置Ｐ２を算出するとともに各負電極板２の位置Ｐ２間でのずれ量の最大値を算出して、所定の基準値内であるか否かを判断し、負電極板２間での位置ずれ検出も行うことができる。さらに、積層された各正電極板１の正極側接続部７との境界である正極活物質５の塗工端の位置Ｐ１を算出して、各正電極板１の位置Ｐ１間でのずれ量の最大値を算出して、所定の基準値内であるか否かを判断して、正電極板１間での位置ずれ検出も行うことができる。   According to this embodiment, a predetermined X-ray image is obtained by the X-ray irradiation unit 11 and the X-ray detection unit 12 that are arranged to face each other at one position on the positive electrode side that is one end side in the width direction of the electrode stack I. As a result, the tact time in the positional deviation inspection of the positive and negative electrode plates 1 and 2 can be shortened as compared with the prior art. Here, the position used as a reference for the amount of deviation in the arithmetic processing unit in the X-ray detection unit in the inspection is the coating end of the positive electrode active material 5 and the positive electrode side of the negative electrode plate 2 which are the boundaries with the positive electrode side connection unit 7. This is the end face. That is, not only is the position rigid, but also the positive electrode side connection portion 7 which is an aluminum foil that may cause noise in the position detection has been removed from the X-ray image, so that the position P1 serving as a detection reference. , P2 can be clearly identified on the X-ray image. As a result, it is possible to accurately detect misalignment. Further, the position P2 of the end face of each of the stacked negative electrode plates 2 is calculated, and the maximum value of the shift amount between the positions P2 of the respective negative electrode plates 2 is calculated to determine whether or not it is within a predetermined reference value. Therefore, it is possible to detect the positional deviation between the negative electrode plates 2. Furthermore, the position P1 of the coating end of the positive electrode active material 5 which is a boundary with the positive electrode side connection part 7 of each laminated | stacked positive electrode plate 1 is calculated, and the deviation | shift amount between the positions P1 of each positive electrode plate 1 It is also possible to calculate a positional deviation between the positive electrode plates 1 by calculating whether or not the value is within a predetermined reference value.

本発明は二次電池、特にスタック構造を有するリチウムイオン電池の製造を行う産業分野において有効に利用することができる。   INDUSTRIAL APPLICABILITY The present invention can be effectively used in the industrial field for manufacturing secondary batteries, particularly lithium ion batteries having a stack structure.

Ｉ 電極積層体
１ 正電極板
２ 負電極板
３ 正電極シート
４ 負電極シート
５ 正極活物質
６ 負極活物質
７ 正極側接続部
８ 負極側接続部
９ セパレータ
１０ Ｘ線検査装置
１１ Ｘ線照射部
１２ Ｘ線検出部
１２Ａ 演算処理部 DESCRIPTION OF SYMBOLS I Electrode laminated body 1 Positive electrode plate 2 Negative electrode plate 3 Positive electrode sheet 4 Negative electrode sheet 5 Positive electrode active material 6 Negative electrode active material 7 Positive electrode side connection part 8 Negative electrode side connection part 9 Separator 10 X-ray inspection apparatus 11 X-ray irradiation part 12 X-ray detection unit 12A Arithmetic processing unit

Claims (4)

アルミ箔で形成した正電極シートの両面上にそれぞれ正極活物質を塗布して形成した正電極板と、他の金属箔で形成した負電極シートの両面上にそれぞれ負極活物質を塗布して形成した負電極板と絶縁体のセパレータを介して交互に積層した電極積層体の前記セパレータの幅方向の一端面から突出する前記正極活物質の未塗工部分である前記アルミ箔の正極側接続部を含む前記電極積層体の一端面側の所定の領域に向けてＸ線を照射してＸ線画像を撮像するとともに、前記Ｘ線画像に前記アルミ箔が写らないように前記Ｘ線の強度を調整し、
前記Ｘ線画像における前記正極側接続部との境界である正極活物質の塗工端の位置と、前記一端面側の負電極板の端面の位置とを特定し、前記塗工端の位置と、前記一端面側の負電極板の端面の位置に基づき前記正電極板と前記負電極板との位置ずれを検出することを特徴とする電極積層体における電極板の位置ずれ検出方法。 Formed by applying positive electrode active material on both sides of positive electrode sheet made of aluminum foil and applying negative electrode active material on both sides of negative electrode sheet made of other metal foil The positive electrode side connecting portion of the aluminum foil which is an uncoated portion of the positive electrode active material protruding from one end face in the width direction of the separator of the electrode laminate alternately laminated through the negative electrode plate and the insulator separator The X-ray image is captured by irradiating X-rays toward a predetermined region on one end face side of the electrode laminate including the X-ray intensity so that the aluminum foil is not reflected in the X-ray image. Adjust
Identify the position of the coating end of the positive electrode active material that is the boundary with the positive electrode side connection portion in the X-ray image, and the position of the end surface of the negative electrode plate on the one end face side, and the position of the coating end , positional displacement detection method of the electrode plate in the electrode stack and detecting the positional deviation of the basis of the position of the end surface of the negative collector plates of the one end face side is positive electrode plate and the negative electrode plate. 請求項１に記載する電極板の位置ずれ検出方法において、
前記Ｘ線は、Ｘ線管における管電圧を７０ｋＶ以上、管電流を２８０μＡ以上として得る強度であることを特徴とする電極積層体における電極板の位置ずれ検出方法。 In the electrode plate displacement detection method according to claim 1,
The X-ray has a strength to obtain a tube voltage in an X-ray tube of 70 kV or more and a tube current of 280 μA or more. アルミ箔で形成した正電極シートの両面上にそれぞれ正極活物質を塗布して形成した正電極板と、他の金属箔で形成した負電極シートの両面上にそれぞれ負極活物質を塗布して形成した負電極板とを絶縁体のセパレータを介して交互に積層した電極積層体における電極板の位置ずれ検出装置において、
前記電極積層体の前記セパレータの幅方向の一端面から突出する前記正極活物質の未塗工部分である前記アルミ箔を挟んで配設されたＸ線照射部及びＸ線検出部と、演算処理部と、を有するとともに、
前記Ｘ線照射部は、前記電極積層体の前記セパレータの幅方向の一端面から突出する前記正極活物質の未塗工部分である前記アルミ箔の正極側接続部を含む前記電極積層体の一端面側の所定の領域に前記アルミ箔を透過する強度のＸ線を照射し、
前記Ｘ線検出部は、照射された前記Ｘ線を入射して前記所定の領域の画像を表すＸ線画像信号を生成し、
前記演算処理部は、前記Ｘ線画像信号に基づき、前記正極側接続部との境界である正極活物質の塗工端の位置と、前記一端面側の負電極板の端面の位置とを特定し、前記一端面側の塗工端の位置と、前記負電極板の端面の位置に基づき正電極板と負電極板との前記電極積層体との位置ずれを検出する演算処理部を内蔵していることを特徴とする電極積層体における電極板の位置ずれ検出装置。 Formed by applying positive electrode active material on both sides of positive electrode sheet made of aluminum foil and applying negative electrode active material on both sides of negative electrode sheet made of other metal foil In the electrode plate misalignment detection apparatus in the electrode laminate in which the negative electrode plate and the laminated separator are alternately laminated via the separator of the insulator,
An X-ray irradiation unit and an X-ray detection unit arranged with the aluminum foil being an uncoated portion of the positive electrode active material protruding from one end face in the width direction of the separator of the electrode laminate, and an arithmetic processing And having a part,
The X-ray irradiator includes a positive electrode side connection portion of the aluminum foil that is an uncoated portion of the positive electrode active material protruding from one end surface of the separator in the width direction of the separator. Irradiate the predetermined region on the end face side with X-rays having an intensity that passes through the aluminum foil,
The X-ray detector generates the X-ray image signal representing the image of the predetermined region by entering the irradiated X-ray,
The arithmetic processing unit identifies the position of the coating end of the positive electrode active material that is a boundary with the positive electrode side connection unit and the position of the end surface of the negative electrode plate on the one end surface side based on the X-ray image signal and incorporates a position of the coating edge of the one end face, an arithmetic processing unit for detecting the positional deviation between the electrode laminate of the positive electrode plate and the negative electrode plate on the basis of the position of the end surface of the negative collector plate have position deviation detecting system of the electrode plate in the electrode stack, wherein Rukoto. 請求項３に記載する電極積層体における電極板の位置ずれ検出装置において、
前記Ｘ線照射部においてＸ線を照射するＸ線管は、管電圧を７０ｋＶ以上、管電流を２８０μＡ以上としたことを特徴とする電極積層体における電極板の位置ずれ検出装置。 In the electrode plate misalignment detection apparatus in the electrode laminate according to claim 3,
An X-ray tube for irradiating X-rays in the X-ray irradiator has a tube voltage of 70 kV or higher and a tube current of 280 μA or higher.
JP2016569358A 2015-01-13 2016-01-12 Method and apparatus for detecting displacement of electrode plate in electrode laminate Active JP6402308B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2015004462 2015-01-13
JP2015004462 2015-01-13
PCT/JP2016/050682 WO2016114257A1 (en) 2015-01-13 2016-01-12 Method for detecting position offset of electrode plates in electrode laminates and device therefor

Publications (2)

Publication Number Publication Date
JPWO2016114257A1 JPWO2016114257A1 (en) 2017-10-19
JP6402308B2 true JP6402308B2 (en) 2018-10-10

Family

ID=56405802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2016569358A Active JP6402308B2 (en) 2015-01-13 2016-01-12 Method and apparatus for detecting displacement of electrode plate in electrode laminate

Country Status (5)

Country Link
JP (1) JP6402308B2 (en)
KR (1) KR101956348B1 (en)
CN (1) CN107112578B (en)
TW (1) TWI660536B (en)
WO (1) WO2016114257A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106091999B (en) * 2016-07-26 2018-08-21 东莞新能源科技有限公司 Pole piece dislocation detection method and device
JP2019067645A (en) * 2017-10-02 2019-04-25 オートモーティブエナジーサプライ株式会社 Battery inspection method
JP6563469B2 (en) * 2017-12-15 2019-08-21 本田技研工業株式会社 Electrode bonding method and electrode bonding apparatus
CN108180826B (en) * 2017-12-20 2023-12-22 深圳湾新科技有限公司 Detection equipment and detection method for boundary of lithium battery winding layer
KR102217201B1 (en) 2018-03-29 2021-02-18 주식회사 엘지화학 Apparatus for inspecting alignment of electrode assembly and method of inspecting electrode assembly using the same
KR102629119B1 (en) 2018-05-02 2024-01-26 에스케이온 주식회사 Electrode plate position inspection system and inspection method
CN108982534B (en) * 2018-08-22 2020-12-04 合肥工业大学 A kind of aluminum foil conveying position and state automatic detection device and detection method
KR102236815B1 (en) * 2020-10-16 2021-04-06 박영호 Inspection device to detect missing or folding tab of battery electrode
WO2022163479A1 (en) * 2021-01-28 2022-08-04 株式会社村田製作所 Secondary battery, electronic device, and electric tool
KR102815846B1 (en) * 2021-03-08 2025-06-02 주식회사 엘지에너지솔루션 Manufacturing device of electrode assembly and method for preparing electrode assembly
CN113078422B (en) * 2021-03-23 2022-11-04 东莞新能安科技有限公司 Cells and electrical equipment
DE102021117152A1 (en) 2021-07-02 2023-01-05 Volkswagen Aktiengesellschaft Method for determining the placement accuracy of a plurality of electrode sheets in a stack
JP7429722B2 (en) * 2022-01-25 2024-02-08 プライムプラネットエナジー＆ソリューションズ株式会社 Method for identifying foil position of electricity storage device and method for calculating distance between foils of electricity storage device
EP4376142A4 (en) 2022-04-06 2024-10-30 Contemporary Amperex Technology (Hong Kong) Limited METHOD, DEVICE AND SYSTEM FOR DETECTING THE SIZE OF A BATTERY COMPOSITE SURFACE
DE102023200459B4 (en) * 2023-01-20 2025-05-28 Powerco Se Method for determining a position of a corner region of an electrode composite stack
DE102023202492B3 (en) 2023-03-21 2024-03-28 Volkswagen Aktiengesellschaft Method for testing a battery element stack with regard to the position of battery element layers
DE102023207152B3 (en) 2023-07-26 2024-10-10 Volkswagen Aktiengesellschaft Method for determining a position of electrode sheets in an electrode-separator composite

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4128397B2 (en) * 2002-06-12 2008-07-30 東芝Ｉｔコントロールシステム株式会社 Battery inspection device
JP2005056602A (en) * 2003-08-05 2005-03-03 Seimi Chem Co Ltd Positive electrode active material powder for lithium secondary battery, and its evaluation method
JP2008282644A (en) * 2007-05-10 2008-11-20 Toyota Motor Corp Degradation assessment of membrane electrode assemblies used in fuel cells
JP4716138B2 (en) * 2008-01-11 2011-07-06 トヨタ自動車株式会社 Electrode winding device, deviation detection method between band electrode and band separator, deviation amount measuring method, deviation amount correcting method, and electrode winding method
JP2010096548A (en) * 2008-10-14 2010-04-30 Nissan Motor Co Ltd Device for inspecting nonaqueous electrolyte secondary battery
JP2011039014A (en) * 2009-08-06 2011-02-24 Toshiba It & Control Systems Corp Battery inspection device
KR20110017761A (en) * 2009-08-14 2011-02-22 에스비리모티브 주식회사 Electrode plate for secondary battery and secondary battery comprising same
JP5559618B2 (en) * 2010-06-21 2014-07-23 株式会社日立パワーソリューションズ Tab inspection method for cylindrical battery with electrode material with tabs, tab inspection device used for inspection method, and tab marking device
JP5458327B2 (en) * 2011-02-04 2014-04-02 東芝Ｉｔコントロールシステム株式会社 Battery inspection apparatus and battery inspection method
CN103163549A (en) * 2011-12-19 2013-06-19 中国科学院西安光学精密机械研究所 Large-area X-ray pulse detection device based on microchannel plate splicing
US20130236771A1 (en) * 2012-03-08 2013-09-12 Robert Bosch Gmbh Rechargeable battery and method of manufacturing the same
JP5502132B2 (en) * 2012-04-20 2014-05-28 Ｃｋｄ株式会社 Inspection device
JP2014011114A (en) * 2012-07-02 2014-01-20 Toyota Industries Corp Power storage device and manufacturing method of electrode assembly
JP6287108B2 (en) * 2013-11-25 2018-03-07 住友金属鉱山株式会社 Non-aqueous electrolyte secondary battery for X-ray analysis

Also Published As

Publication number Publication date
WO2016114257A1 (en) 2016-07-21
KR20170102973A (en) 2017-09-12
JPWO2016114257A1 (en) 2017-10-19
CN107112578A (en) 2017-08-29
TW201640729A (en) 2016-11-16
KR101956348B1 (en) 2019-03-08
TWI660536B (en) 2019-05-21
CN107112578B (en) 2019-07-05

Similar Documents

Publication Publication Date Title
JP6402308B2 (en) Method and apparatus for detecting displacement of electrode plate in electrode laminate
US11307026B2 (en) Alignment inspection apparatus for electrode assembly and alignment inspection method for electrode assembly using the same
JP2023177103A (en) Method for manufacturing electrode laminate
JP2020017483A (en) Weld inspection method of power storage device
JP2015176701A (en) Power storage device and method for manufacturing power storage device
CN105594013A (en) Insertion guide for film-coated batteries
JP2015170402A (en) Inspection method of tab lead and inspection apparatus of tab lead
JP2016012549A (en) Method and apparatus for detecting misalignment of separator of electrode laminate
CN116499399A (en) Method for Determining Foil Position of Electric Storage Device and Calculating Method for Distance Between Foils of Electric Storage Device
JP6965587B2 (en) Electrode assembly
JP2016038995A (en) Power storage device and method for manufacturing power storage device
JP2015065178A (en) Method for manufacturing film exterior battery
KR102537425B1 (en) Stacked electrode body, resin-fixed stacked electrode body, and all-solid-state battery
JP2015106614A (en) Power storage device and method for manufacturing the same
JP2020191255A (en) Electrical resistance inspection method
JP2014007196A (en) Manufacturing method of electronic component and manufacturing apparatus of electronic component
JP5655773B2 (en) Electrode material application amount measurement method
JP2020197408A (en) Attitude inspection device
JP6922328B2 (en) Manufacturing method of electrode assembly
KR102731444B1 (en) Welding method for electrode and the eletrode assembly manufactured by the same
US20250105378A1 (en) Stack Cell for Easy Confirmation of Separator Folding, Separator Inspection Device and Inspection Method
JP2009105193A (en) Capacitor unit inspection method
JP2018190509A (en) Inspection method for power storage device
JP6507558B2 (en) Device for diagnosing battery assembly and connection state of battery assembly
KR102920584B1 (en) Welding inspection apparatus and method of the electrode tab and electrode lead

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170712

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20170712

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170719

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20170802

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20180613

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20180710

R150 Certificate of patent or registration of utility model

Ref document number: 6402308

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313115

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350