-
公开(公告)号：EP4032655A1
公开(公告)日：2022-07-27
申请号：EP20921672.0
申请日：2020-12-29
发明人： LEE, Jung Hoon , JUNG, Su Taek , KIM, Seok Jin , LEE, Ji Hoon , KOO, Sang Hyun
IPC分类号： B23K31/12 , B23K11/25 , H01M50/531
摘要： A method for inspecting a welding defect of the present invention includes: a threshold resistance setting step (S100) of measuring a resistance of a welded portion of a sample group and deriving a threshold resistance value which becomes an evaluation standard of a weak welding; a resistance measuring step (S200) of measuring a resistance value of a welded portion to be inspected; and a determination step (S300) of determining the welded portion as a weak welding if the resistance value measured in the resistance measuring step exceeds the threshold resistance value, wherein the threshold resistance setting step (S100) and the resistance measuring step (S200) include measuring a resistance using a microresistance measuring instrument having a resolution of nanoohm to microohm units.
The welding defect inspection method of the present invention shows excellent detection power for the welding defect by a weak welding.-
2.发明公开
公开(公告)号：EP3922394A1
公开(公告)日：2021-12-15
申请号：EP20848578.9
申请日：2020-07-30
发明人： KOO, Sang Hyun , KIM, Seok Jin , JUNG, Su Taek , LEE, Jung Hoon
IPC分类号： B23K11/25 , B23K31/12 , G01N27/90 , H01M50/529
摘要： The present technology relates to a method for evaluating resistance welding quality of a battery by using eddy current signal characteristics, wherein high reliability can be provided by preventing an error caused by a variation according to differences in physical properties of individual batteries, and an evaluation process is simple and clear by applying a non-destructive method.
-
公开(公告)号：EP4371738A1
公开(公告)日：2024-05-22
申请号：EP22842441.2
申请日：2022-07-12
发明人： KOO, Sang Hyun , JUNG, Su Taek
CPC分类号： Y02E60/10 , B29C65/02 , B29C65/24 , B29C65/00 , C09K5/04 , H01M50/105 , H01M10/04 , B29L2031/0020130101
摘要： The present invention relates to a sealing device, and more particularly, to a sealing device in which a temperature of a sealing surface of the sealing device is constantly maintained even though an appropriate solvent is continuously heated using a phase change of a material, thereby manufacturing a pouch sealing part having excellent quality in a product of a pouch type secondary battery.
The sealing device according to the present invention includes a sealing body provided with a sealing surface, which is configured to seal a sealing target object, on one surface thereof, a solvent that is in contact with the other surface of the sealing body to supply heat to the sealing body, and a heat source configured to heat the solvent so that at least a portion of the solvent is phase-changed into a gas.-
公开(公告)号：EP4353402A1
公开(公告)日：2024-04-17
申请号：EP22820579.5
申请日：2022-06-09
发明人： LEE, Jung Hoon , JUNG, Su Taek , KIM, Seok Jin , LEE, Ji Hoon , KOO, Sang Hyun , KIM, Min Wook
IPC分类号： B23K31/12 , B23K11/25 , H01M50/536 , B23K101/36
CPC分类号： B23K2101/3620180801 , B23K31/12 , H01M50/536 , B23K11/25
摘要： The present invention relates to a device for inspecting a welded state for a cylindrical secondary battery, which inspects the welded state on a plurality of welded portions coupling a non-coating portion of an electrode to an electrode tab. The device comprises a resistance measurement unit provided with a plurality of resistance measurement probes which respectively measure resistance values of the plurality of welded portions; and a resistance inspection unit which compares each of the resistance values of the plurality of welded portions, which are measured by the resistance measurement unit, with a critical resistance value, wherein, when the resistance value of at least one welded portion among the plurality of welded portions exceeds the critical resistance value, it is determined as weak welding. The plurality of resistance measurement probes respectively measure the resistance values of the plurality of welded portions while being respectively in contact with a non-welding surface disposed between the plurality of welded portions and non-welding surfaces outside the outermost welded portions.
-
公开(公告)号：EP4026651A1
公开(公告)日：2022-07-13
申请号：EP21765449.0
申请日：2021-02-08
发明人： LEE, Jung Hoon , JUNG, Su Taek , KIM, Seok Jin , LEE, Ji Hoon , KOO, Sang Hyun
IPC分类号： B23K31/12 , G01N33/207 , H01M10/48 , H01M50/531
摘要： The present invention provides an apparatus for inspecting a welding state in a welded portion for an electronic or mechanical coupling in a lithium secondary battery, the apparatus including: a measuring unit configured to obtain data for deriving a resistance value of the welded portion by allowing a resistance measuring probe to contact the welded portion; and a controller configured to communicate with the measuring unit, determine the resistance value of the welded portion by receiving the data obtained from the measuring unit, and determine whether a weak welding was performed by comparing the determined resistance value with a threshold resistance value, in which the measuring unit is configured to allow the resistance measuring probe to contact one end and the other end of the welded portion.
-
6.发明公开
公开(公告)号：EP3978915A1
公开(公告)日：2022-04-06
申请号：EP20855037.6
申请日：2020-08-14
发明人： KIM, Seok Jin , JUNG, Su Taek , KOO, Sang Hyun , LEE, Jung Hoon
摘要： The present invention relates to an eddy current sensor for deriving an eddy current and sensing the derived eddy current in order to detect a crack in a battery cell, the eddy current sensor comprising: a core unit in which a coil is wound around a magnetic member; and a case for accommodating the core unit of which there are at least two, and which are respectively arranged so that the central axis of the coil is oriented in the thickness direction of the battery cell. The eddy current sensor of the present invention enables one-point sensing, thereby improving crack detection capability without a non-inspection area while having high detection resolution.
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.014 秒)
