JP7479465B2 - 溶接不良の検査方法 - Google Patents
溶接不良の検査方法 Download PDFInfo
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- 238000003466 welding Methods 0.000 title claims description 33
- 230000007547 defect Effects 0.000 title claims description 17
- 239000000523 sample Substances 0.000 claims description 67
- 238000000034 method Methods 0.000 claims description 47
- 238000005259 measurement Methods 0.000 claims description 45
- 238000009826 distribution Methods 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 9
- 230000002950 deficient Effects 0.000 claims description 8
- 238000000691 measurement method Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 238000009795 derivation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/20—Investigating the presence of flaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
- B23K31/125—Weld quality monitoring
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/207—Welded or soldered joints; Solderability
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/38—Conductors
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Immunology (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Biochemistry (AREA)
- Analytical Chemistry (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Plasma & Fusion (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Connection Of Batteries Or Terminals (AREA)
Description
20 電極タブ
30 溶接部
31 一端
32 他端
33 溶接部
34 溶接部
40 接触位置
100 抵抗測定プローブ
110 電流プローブ
120 電圧プローブ
Claims (8)
- 標本集団の溶接部の抵抗を測定して弱溶接の判断基準となる臨界抵抗値を導出する臨界抵抗設定ステップS100と、
検査対象の溶接部の抵抗値を測定する抵抗測定ステップS200と、
前記抵抗測定ステップで測定された抵抗値が前記臨界抵抗値を超える場合、弱溶接として判断するステップS300とを含み、
前記臨界抵抗設定ステップS100及び前記抵抗測定ステップS200は、
分解能がナノオーム乃至マイクロオーム単位である微細抵抗測定器を用いて抵抗を測定し、
前記抵抗測定ステップS200は、前記溶接部に2つの抵抗測定プローブを接触させて抵抗を測定し、
前記溶接部の一端に一つの抵抗測定プローブを、他端に他の一つの抵抗測定プローブを接触させて、前記溶接部全体の抵抗を測定し、
前記溶接部は、超音波溶接によって形成され、
前記溶接部の境界面に前記抵抗測定プローブを接触させて抵抗を測定し、
前記臨界抵抗設定ステップS100は、
前記標本集団に対してナノオーム乃至マイクロオーム単位の微細抵抗を測定し、それを貯蔵するデータ構築ステップS110と、
前記データ構築ステップS110によって蓄積されたデータを統計的方式で処理して臨界値を導出する臨界抵抗値導出ステップS120とを含む、溶接不良検査方法。 - 前記抵抗測定プローブは電圧プローブ及び電流プローブを含む、請求項1に記載の溶接不良検査方法。
- 前記抵抗測定ステップS200は、4線式測定方式で前記溶接部の抵抗を測定する、請求項1または2に記載の溶接不良検査方法。
- 前記抵抗測定ステップS200は、直流方式で前記溶接部の抵抗を測定する、請求項1から3のいずれか一項に記載の溶接不良検査方法。
- 前記標本集団の個体数が少なくとも100,000以上である、請求項1から4のいずれか一項に記載の溶接不良検査方法。
- 前記標本集団の抵抗値は正規分布曲線をなす、請求項1から5のいずれか一項に記載の溶接不良検査方法。
- 前記臨界抵抗値は、平均値+6δである、請求項6に記載の溶接不良検査方法。
- 前記溶接部は、パウチ型二次電池の電極タブと電極リードとの間の溶接部および電極タブと電極タブとの間の溶接部の中で選択された一つである、請求項1から7のいずれか一項に記載の溶接不良検査方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020200023657A KR20210108716A (ko) | 2020-02-26 | 2020-02-26 | 용접 불량 검사 방법 |
KR10-2020-0023657 | 2020-02-26 | ||
PCT/KR2020/019247 WO2021172728A1 (ko) | 2020-02-26 | 2020-12-29 | 용접 불량 검사 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2023500225A JP2023500225A (ja) | 2023-01-05 |
JP7479465B2 true JP7479465B2 (ja) | 2024-05-08 |
Family
ID=77491292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2022524016A Active JP7479465B2 (ja) | 2020-02-26 | 2020-12-29 | 溶接不良の検査方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20220412911A1 (ja) |
EP (1) | EP4032655A4 (ja) |
JP (1) | JP7479465B2 (ja) |
KR (1) | KR20210108716A (ja) |
CN (1) | CN114616462A (ja) |
WO (1) | WO2021172728A1 (ja) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103376278A (zh) | 2012-04-27 | 2013-10-30 | 协鑫动力新材料(盐城)有限公司 | 一种检测锂离子电池极耳焊接牢固度的方法 |
US20170322168A1 (en) | 2016-05-06 | 2017-11-09 | GM Global Technology Operations LLC | Method and apparatus for evaluating a weld junction between a terminal and an electrode element of a battery cell |
CN107607592A (zh) | 2017-10-10 | 2018-01-19 | 深圳军洋科技发展有限公司 | 焊接可靠性测试方法及设备 |
CN108181356A (zh) | 2018-01-11 | 2018-06-19 | 哈尔滨理工大学 | 一种电池焊接质量的测量方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US6265688B1 (en) * | 2000-02-03 | 2001-07-24 | Norman A. Lyshkow | Method of welding metals and apparatus for use therefor |
JP4474808B2 (ja) * | 2001-06-28 | 2010-06-09 | 株式会社デンソー | 溶接部の非破壊検査方法および溶接部の非破壊検査装置 |
JP2012200765A (ja) * | 2011-03-25 | 2012-10-22 | Toyota Motor Corp | 抵抗溶接の品質評価方法及び装置 |
US9843002B2 (en) | 2015-10-29 | 2017-12-12 | Semiconductor Energy Laboratory Co., Ltd. | Organometallic complex, light-emitting element, light-emitting device, electronic device, and lighting device |
KR101887148B1 (ko) * | 2017-12-22 | 2018-08-09 | 조태문 | 용접품질 검사 시스템 및 장치 |
KR102057781B1 (ko) * | 2018-06-25 | 2019-12-19 | 현대제철 주식회사 | 스폿용접부의 품질 예측 장치와 방법 |
KR102173204B1 (ko) | 2018-08-13 | 2020-11-03 | 고려대학교 산학협력단 | 빅데이터 시각화 기반의 특허 분석 시스템 및 그 방법 |
US11906593B2 (en) * | 2019-10-31 | 2024-02-20 | Keysight Technologies, Inc. | Method and system for testing the structural integrity of a metal joint |
-
2020
- 2020-02-26 KR KR1020200023657A patent/KR20210108716A/ko not_active Application Discontinuation
- 2020-12-29 WO PCT/KR2020/019247 patent/WO2021172728A1/ko unknown
- 2020-12-29 JP JP2022524016A patent/JP7479465B2/ja active Active
- 2020-12-29 US US17/771,163 patent/US20220412911A1/en active Pending
- 2020-12-29 EP EP20921672.0A patent/EP4032655A4/en active Pending
- 2020-12-29 CN CN202080075215.3A patent/CN114616462A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103376278A (zh) | 2012-04-27 | 2013-10-30 | 协鑫动力新材料(盐城)有限公司 | 一种检测锂离子电池极耳焊接牢固度的方法 |
US20170322168A1 (en) | 2016-05-06 | 2017-11-09 | GM Global Technology Operations LLC | Method and apparatus for evaluating a weld junction between a terminal and an electrode element of a battery cell |
US10274448B2 (en) | 2016-05-06 | 2019-04-30 | GM Global Technology Operations LLC | Method and apparatus for evaluating a weld junction between a terminal and an electrode element of a battery cell |
CN107607592A (zh) | 2017-10-10 | 2018-01-19 | 深圳军洋科技发展有限公司 | 焊接可靠性测试方法及设备 |
CN108181356A (zh) | 2018-01-11 | 2018-06-19 | 哈尔滨理工大学 | 一种电池焊接质量的测量方法 |
Also Published As
Publication number | Publication date |
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CN114616462A (zh) | 2022-06-10 |
US20220412911A1 (en) | 2022-12-29 |
JP2023500225A (ja) | 2023-01-05 |
EP4032655A4 (en) | 2022-12-07 |
KR20210108716A (ko) | 2021-09-03 |
EP4032655A1 (en) | 2022-07-27 |
WO2021172728A1 (ko) | 2021-09-02 |
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