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公开(公告)号：EP4187658A1
公开(公告)日：2023-05-31
申请号：EP21869747.2
申请日：2021-09-16
发明人： KIM, Min Gyu , LEE, Yong Gon , LEE, Je Jun , LIM, Jae Won , MIN, Geon Woo , CHO, Min Su , SUNG, Joo Hwan , CHAE, Sang Hak
IPC分类号： H01M10/04 , H01M50/54 , H01M50/528 , H01M50/166 , H01M50/545 , H01M50/183 , H01M50/449 , H01M50/109 , H01M50/153
摘要： The present invention relates to a button-type secondary battery, and more particularly, to a button-type secondary battery, which has strong coupling so that a gas that is harmful to the human body does not leak to the outside of the battery even though an excessive internal pressure is generated by the gas generated inside the battery, and an electrolyte does not leak to the outside of the battery, is improved in a vacuum ratio occupied by an electrode assembly within the battery to maximize battery capacity and energy density, and is simplified and convenient in manufacturing process to improve production efficiency.
The button-type secondary battery according to the present invention relates to a button-type secondary battery, of which a diameter is greater than a height, comprises: an electrode assembly; a lower can in which the electrode assembly is inserted and on which a first screw thread is formed on an outer circumferential surface thereof; an upper can which is configured to cover an opening of an upper end of the lower can and on which a second screw thread corresponding to the first screw thread is formed on an inner circumferential surface thereof; and an insulator interposed between the upper can and the lower can to prevent the upper can and the lower can from being short-circuited, wherein the electrode assembly is formed by stacking a plurality of first electrodes, a separator, and a second electrode in a horizontal direction, and a first electrode tab extending from the first electrodes of the electrode assembly is in contact with the upper can.-
公开(公告)号：EP4099484A1
公开(公告)日：2022-12-07
申请号：EP21869550.0
申请日：2021-08-13
发明人： KIM, Min Gyu , LEE, Yong Gon , LEE, Je Jun , LIM, Jae Won , MIN, Geon Woo , CHO, Min Su , SUNG, Joo Hwan , CHAE, Sang Hak
IPC分类号： H01M50/166 , H01M50/109 , H01M50/153 , H01M10/04 , H01M50/342 , H01M50/578 , H01M50/528 , H01M50/531
摘要： The present invention relates to a button-type secondary battery, and more particularly, to a button-type secondary battery, which is capable of collecting a gas within the battery even if an excessive internal pressure is generated by the gas generated in the battery to prevent the battery from being disassembled or prevent a gas that is harmful to the human body from leaking to the outside of the battery by the gas pressure and to block a flow of current when necessary in a situation in which overcurrent or an internal high pressure occurs, thereby significantly securing safety of the battery.
A button-type secondary battery according to the present invention relates to a button-type secondary battery having a diameter greater than a height thereof, the button-type secondary battery including: an electrode assembly; a lower can into which the electrode assembly is inserted; and an upper can configured to cover an opening of an upper end of the lower can, wherein a beading part recessed inward is provided in an upper portion of the lower can, and the upper end of the lower can disposed above the beading part has a bent shape and configured to surround an edge end of the upper can so that the upper can and the lower can are coupled to each other.-
公开(公告)号：EP4297174A1
公开(公告)日：2023-12-27
申请号：EP22756558.7
申请日：2022-02-18
发明人： CHOI, Suji , KIM, Do Gyun , LEE, Je Jun , HWANG BO, Kwang Su , MIN, Geon Woo , JO, Minki
IPC分类号： H01M50/538 , H01M50/536 , H01M10/04
摘要： The present specification provides a secondary battery, a battery pack, and a vehicle including the same, the secondary battery including an electrode assembly in which first and second electrodes and a separator provided between the first and second electrodes are wound, the first and second electrodes each including a non-coated portion of the first electrode disposed at a long side end thereof, exposed to the outside of the separator, and having no active material applied thereonto, and a current collecting plate provided at one end of the electrode assembly at which the non-coated portion of the first electrode is exposed, the current collecting plate including a central portion corresponding to a core of the electrode assembly, and a peripheral portion provided around the central portion and configured to adjoin one end of the electrode assembly, in which the peripheral portion includes one or more first through-holes penetrated by at least a part of the non-coated portion of the first electrode.
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公开(公告)号：EP4109665A1
公开(公告)日：2022-12-28
申请号：EP21872805.3
申请日：2021-09-13
发明人： JUNG, Ji Min , LEE, Je Jun , LEE, Jin Soo , SON, Bu Won , LIM, Jae Won , LEE, Jin Yeong
IPC分类号： H01M50/528 , H01M10/04 , H01M50/153 , B23K26/21 , B23K101/38
摘要： The present invention relates to a button-type secondary battery, which can significantly improve the welding strength with which an electrode tab is welded to a can case, and thus relates to a button-type secondary battery, which has a high level of impact resistance and is in a condition capable of passing a mechanical welding strength test (mechanical test). The button-type secondary battery according to the present invention comprises: an electrode assembly formed by alternately stacking electrodes and separators; a can case in which the electrode assembly is accommodated in the inner accommodating space thereof; and an electrode tab having one side connected to the electrodes of the electrode assembly and the other side connected to the can case by welding, wherein a welding pattern appearing in a welded portion where the electrode tab is welded to the can case includes a circular shape and an additional shape in addition to the circular shape.
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5.发明公开
公开(公告)号：EP4432451A1
公开(公告)日：2024-09-18
申请号：EP22893247.1
申请日：2022-11-11
发明人： LEE, Soono , CHOI, Kyuhyun , KONG, Jinhak , LEE, Je Jun , LIM, Jae Won
IPC分类号： H01M50/531 , H01M50/538 , B21D22/02 , B21D1/02 , B30B11/04
CPC分类号： Y02P70/50 , Y02E60/10 , B30B11/04 , H01M50/531 , B21D1/02 , H01M50/538 , B21D22/02
摘要： A forming device and a forming method thereof bends an electrode tab portion that is exposed to the end portion of a jelly roll-type electrode assembly in the axial direction thereof, in a radial direction. The forming device may include a forming jig bending the electrode tab, and a flattening jig flattening the bent electrode tab further. The forming jig comprises a pre-forming perimeter surface and a bend inducing surface. The pre-forming perimeter surface has an inner radius that increases from a base end toward a leading end elongated in a pressing direction. The bend inducing surface connects to the base end of the pre-forming perimeter surface, and extends inwards, in the radial direction.
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公开(公告)号：EP4306232A1
公开(公告)日：2024-01-17
申请号：EP22767404.1
申请日：2022-03-03
发明人： PARK, Kyeong Hoon , JUNG, Jimin , LEE, Je Jun , KIM, Hak Kyun
摘要： The present specification relates to a multi-roller system including two pairs or more of rollers, in which the two pairs or more of rollers rotate about independent rotation axes, respectively, changes in heights of the two pairs or more of rollers are controlled, cross-sections of the two pairs or more of rollers have different shapes, and the two pairs or more of rollers approach and press the battery can at intervals between the two pairs or more of rollers.
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公开(公告)号：EP4184674A1
公开(公告)日：2023-05-24
申请号：EP21880369.0
申请日：2021-10-01
发明人： MIN, Geon Woo , LIM, Jae Won , CHO, Kyung Wook , LEE, Yong Gon , LEE, Je Jun , HWANGBO, Kwang Su , CHO, Min Su , KIM, Min Gyu , CHAE, Sang Hak
IPC分类号： H01M50/169 , H01M50/153 , H01M50/109 , H01M50/172 , H01M10/04
摘要： The present invention provides a button-type secondary battery comprising: an electrode assembly in which electrodes and a separator are wound in a state of being stacked and from which electrode tabs having different polarities protrude from top and bottom surfaces thereof, respectively; a can comprising a bottom part placed below when the electrode assembly is mounted and connected to one electrode tab and a sidewall vertically extending along a circumference of the bottom part; and a top cap assembly provided with a terminal part connected to the other electrode tab and a plate coupled to be insulated from the terminal part and having an edge coupled to an upper end of the sidewall, wherein, when the electrode assembly is mounted in the can, the top cap assembly is coupled to close the can, wherein an end of an edge of the plate is welded to be coupled after being seated on a point that meets the upper end of the sidewall.
In the present invention having the above configuration, since the welding is performed after being seated on the point at which the end of the edge of the plate meets the upper end of the sidewall, the welding may be more stably performed to improve the welding quality.-
公开(公告)号：EP4307462A1
公开(公告)日：2024-01-17
申请号：EP22767410.8
申请日：2022-03-04
发明人： PARK, Kyeong Hoon , JUNG, Jimin , LIM, Jae Won , LEE, Je Jun , KIM, Hak Kyun
IPC分类号： H01M50/538 , H01M50/167
摘要： Disclosed is a cylindrical secondary battery, a battery pack, and a transport means, the cylindrical secondary battery including an electrode assembly having a structure in which a first electrode, a second electrode, and a separator interposed between the first and second electrodes are sequentially stacked and wound, the first electrode including a non-coated portion having no active material applied onto one surface of a current collector, the non-coated portion including a first electrode tab bent from an end of the electrode assembly toward a winding center or an outer periphery, a battery can configured to accommodate the electrode assembly through an opening portion formed at one side of the battery can, a current collecting plate including three or more tab coupling portions electrically connected to the first electrode tab, and a can coupling portion extending from ends of the tab coupling portions toward the opening portion of the battery can and having a continuous outer peripheral surface electrically connected to an inner surface of the battery can, and a top cap configured to cover the opening portion of the battery can.
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公开(公告)号：EP4306258A1
公开(公告)日：2024-01-17
申请号：EP22767477.7
申请日：2022-03-08
发明人： LIM, Jae Won , LEE, Je Jun , KIM, Hak Kyun , MUN, Hong Jae
IPC分类号： B23K31/12 , B23K103/10 , B23K101/36
摘要： The present specification relates to a welding quality inspection apparatus for a welding portion of a secondary battery, and provides a welding quality inspection apparatus including:
a measurement unit including a first resistance measurement member measuring a resistance value by directing contacting a first measurement point and a second resistance measurement member measuring the resistance value by directly contacting a second measurement point; and
a control unit judges that a welding defect occurs and sorts a defective item when the resistance values obtained from the measurement unit exceeds a threshold resistance value,
in which the first measurement point is positioned on a first electrode terminal exposed to the outside of the secondary battery,
the second measurement point is positioned on the welding portion of the first electrode current collector provided inside the secondary battery, and
the second resistance measurement member contacts the welding portion of the first electrode current collector which exists inside the secondary battery through a winding hole of the electrode assembly opposite to the first electrode terminal.-
公开(公告)号：EP4087033A1
公开(公告)日：2022-11-09
申请号：EP21842476.0
申请日：2021-07-14
发明人： KIM, Min Gyu , KIM, Byung Sup , SUNG, Joo Hwan , LEE, Yong Gon , LEE, Je Jun , HWANGBO, Kwang Su , MIN, Geon Woo , CHO, Min Su , CHAE, Sang Hak
IPC分类号： H01M50/166 , H01M50/183 , H01M50/153 , H01M50/109 , H01M10/04
摘要： The present invention relates to a button-type secondary battery, in which an electrode assembly is mounted in a lower can, and an upper can is coupled to the lower can, the button-type secondary battery comprising: the lower can having a first sidewall in a vertical direction along a circumference of a first flat portion; an upper can having a second sidewall in a vertical direction along a circumference of a second flat portion, wherein the upper can is coupled to the lower can so that the second flat portion faces the first flat portion, and the second sidewall is disposed outside the first sidewall; an electrode assembly in which a negative electrode, a separator, and a positive electrode are wound in a state of being stacked and which is mounted in an inner space between the lower can and the upper can so that the negative electrode is connected to the lower can, and the positive electrode is connected to the upper can; and a gasket disposed between the second sidewall and the first sidewall to prevent the upper can and the lower can from being in contact with each other, wherein the second sidewall comprises a distant end that is bent to surround an edge configured to connect the first flat portion to the first sidewall and is disposed below the first flat portion, and the gasket extends to be disposed between the distal end and the first flat portion.
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