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公开(公告)号：EP4456263A1
公开(公告)日：2024-10-30
申请号：EP22911138.0
申请日：2022-12-16
IPC分类号： H01M10/658 , H01M10/613 , H01M10/643 , H01M10/647 , H01M10/651 , H01M50/204 , H01M50/213
摘要： A battery pack includes a heat insulating member between adjacent cells, and a side surface member disposed in contact with side surfaces of the plurality of cells excluding a site including the heat insulating member, with thermal conductivity higher than the heat insulating member. When λa denotes thermal conductivity of the heat insulating member, and Ca denotes a product value of a specific heat and a density, 0.001 W / (m×K) 3 ×K) are satisfied. When λb denotes thermal conductivity of the side surface member, and Cb denotes a product value of a specific heat and a density, 0.1 W / (m×K) 3 ×K) are satisfied or 1.0 W / (m×K) 3 ×K) are satisfied.
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公开(公告)号：EP4447216A1
公开(公告)日：2024-10-16
申请号：EP22903950.8
申请日：2022-11-09
发明人： KOHARA, Hikaru
IPC分类号： H01M50/271 , H01M50/204 , H01M50/209 , H01M50/224
摘要： A battery pack according to an aspect of the present disclosure includes a battery module and an external case accommodating the battery module therein. The external case includes: a case body having a tubular shape having an opening; and a lid part closing the opening of the case body. The lid part includes: an inner lid connected to the opening of the case body; and an outer lid fixed to the inner lid and closing the opening of the case body. The inner lid is connected to an inner surface of the case body at the opening of the case body. The outer lid is fixed to an outer surface of the inner lid.
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公开(公告)号：EP4447137A1
公开(公告)日：2024-10-16
申请号：EP22903991.2
申请日：2022-11-17
发明人： ISHIKAWA Toshiki , OOTA Satoshi
IPC分类号： H01M4/02 , H01M6/02 , H01M10/04 , H01M50/531
摘要： The present invention is an electrode plate, an electrode body, and a battery, wherein the quality of the electrode body is stabilized while allowing rapid cause analysis to be carried out when a malfunction occurs. The electrode plate has a strip-like core, a mixture layer formed on both sides of the core, and an exposed section in which the core is exposed, and which is provided so as to be in contact with one short-direction end of the core. The exposed section is provided in mutually opposing positions on both sides of the core and is adjacent to the mixture layer in the short direction and long direction of the core. A lead is connected to the exposed section so as to extend out of one end on either surface of the core. An identification display part by which a manufacturing process history can be identified is formed in the exposed section on either surface of the core.
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公开(公告)号：EP4443594A1
公开(公告)日：2024-10-09
申请号：EP22901189.5
申请日：2022-11-25
IPC分类号： H01M10/0587 , H01M4/131 , H01M10/052 , H01M10/0566 , H01M50/538 , H01M50/586 , H01M50/595
CPC分类号： Y02E60/10 , Y02P70/50 , H01M10/0587 , H01M10/052 , H01M10/0566 , H01M50/595 , H01M50/586 , H01M50/538 , H01M4/131
摘要： A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure is provided with: an electrode body that is obtained by winding a first electrode and a second electrode, which are different from each other in polarity, with a separator being interposed therebetween; an electrolyte solution; and a cylindrical outer package can in which the electrode body and the electrolyte solution are contained. The first electrode comprises a collector and a mixture layer that is formed on at least a part of the surface of the collector; the surface of the first electrode is provided with a plurality of exposure parts, in which the collector is exposed, in the longitudinal direction; the plurality of exposure parts are in contact with only one of both edges of the first electrode in the width direction; a plurality of tabs are respectively connected to the exposure parts and are led out from one edge; a plurality of protection members respectively cover the exposure parts, the tabs, and portions of the mixture layer exposed in the exposure parts in the width direction; and the plurality of covered portions, in which the mixture layer is covered by the protection members, do not overlap with each other in the width direction.
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公开(公告)号：EP4439723A1
公开(公告)日：2024-10-02
申请号：EP22898332.6
申请日：2022-10-28
发明人： MAKIDA, Akari , KOBAYASHI, Ryota , TAKASHIMA, Masahiro , KINTSU, Kohei , NOMURA, Shun , CHIBA, Takeshi , ISHIKAWA, Takayuki , SHINOMIYA, Takuya
摘要： Provided is a transition metal-containing hydroxide capable of improving the cycle characteristics and safety of a secondary battery, while imparting an excellent battery capacity to the secondary battery, by preventing the elution of an additive metal element, which is a trace element contained in the transition metal-containing hydroxide, due to phase transition or segregation when the transition metal-containing hydroxide is calcined.
A transition metal-containing hydroxide that is a precursor of a positive electrode active material in a non-aqueous electrolyte secondary battery, the transition metal-containing hydroxide containing at least one main metal element selected from the group consisting of Ni, Co and Mn and at least one additive metal element selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zr, V, Nb, Cr, Mo, W, Fe, Ru, Cu, Zn, B, Al, Ga, Si, Sn, P and Bi, in which a cumulative pore volume in a BJH method measured by a gas adsorption method is 0.145 cm3/g or less.-
公开(公告)号：EP4425599A1
公开(公告)日：2024-09-04
申请号：EP22886755.2
申请日：2022-10-17
发明人： OHTA, Atsushi
IPC分类号： H01M4/131 , H01M4/36 , H01M4/38 , H01M10/052 , H01M10/0587
CPC分类号： Y02E60/10 , Y02P70/50 , H01M10/0587 , H01M10/052 , H01M4/36 , H01M4/38 , H01M4/131
摘要： With respect to a nonaqueous electrolyte secondary battery according to one embodiment of the present invention, a positive electrode comprises a mixture layer that contains first composite oxide particles, which are non-agglomerated particles having a volume-based median diameter of 2 µm to 20 µm, and second composite oxide particles, which are secondary particles each are composed of agglomerated primary particles having an average particle diameter of 50 nm to 5 µm. The mixture layer has: first regions which extend from both edges of the mixture layer in the width direction in a length that exceeds 10% of the total width of the mixture layer; and a second region that is sandwiched between the first regions. More second composite oxide particles are contained in the first regions than the first composite oxide particles. More first composite oxide particles are contained in the second region than the second composite oxide particles.
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公开(公告)号：EP4401178A1
公开(公告)日：2024-07-17
申请号：EP22867085.7
申请日：2022-07-15
发明人： HIROSE Takayuki , UEGAKI Shunsuke , OKIMOTO Ryota
IPC分类号： H01M10/04 , H01M4/04 , H01M4/13 , H01M4/139 , H01M10/0525 , H01M10/0587 , H01M50/533 , H01M50/536 , H01M50/548
CPC分类号： Y02E60/10 , Y02P70/50 , H01M10/0587 , H01M4/13 , H01M50/533 , H01M4/04 , H01M10/0525 , H01M10/04 , H01M4/139 , H01M50/536 , H01M50/548
摘要： This battery manufacturing method includes: preparation of a wound-type electrode group 2 formed by laminating and winding separators and electrode plates such that the electrode group 2 has recessed parts 70 in first regions R1, which continue from an inner edge at one end in an axial direction E, electrode plates being shorter at the recessed parts 70 than in second regions R2 positioned on the outer side of the first regions R1; bending of end parts of the electrode plates in the second regions R2 in a radial direction B of the electrode group 2; joining of the bent end parts with a collector plate; insertion of the electrode group 2 joined with the collector plate into an exterior can 4 so that the collector plate and a bottom surface of the exterior can 4 face each other; insertion of a press jig 72 into a center space of the electrode group 2; and pressing of the collector plate against the bottom surface to join the collector plate with the exterior can 4.
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公开(公告)号：EP4379895A1
公开(公告)日：2024-06-05
申请号：EP22849084.3
申请日：2022-06-23
发明人： SUGII, Noriko , TANIGAWA, Kei
IPC分类号： H01M10/0587 , H01M10/0566 , H01M50/443 , H01M50/446 , H01M50/451 , H01M50/46 , H01M50/548
CPC分类号： Y02P70/50 , Y02E60/10 , H01M10/0587 , H01M10/0566 , H01M50/446 , H01M50/451 , H01M50/443 , H01M50/548 , H01M50/46
摘要： Provided is a non-aqueous electrolyte secondary battery that has improved cycle characteristics. A non-aqueous electrolyte secondary battery, which is one aspect of the present disclosure, comprises: a wound electrode body in which a positive electrode and a negative electrode are wound, with a first separator that is disposed on the winding inner side of the positive electrode and a second separator that is disposed on the winding outer side of the positive electrode being interposed therebetween; an electrolytic solution; and an exterior body which accommodates the electrode body and the electrolytic solution, wherein the first separator has a first base material layer and a first coating layer that is formed on the surface of the first base material layer which faces the positive electrode, the second separator has a second base material layer and a second coating layer that is formed on the surface of the second base material layer which faces the positive electrode, the first coating layer and the second coating layer each include a filler and an organic material, and the content of the filler in the first coating layer is higher than the content of the filler in the second coating layer.
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公开(公告)号：EP4366026A1
公开(公告)日：2024-05-08
申请号：EP22832815.9
申请日：2022-06-15
发明人： SAKITANI Nobuhiro
IPC分类号： H01M10/058 , H01M4/13 , H01M4/62 , H01M10/052
CPC分类号： Y02E60/10 , H01M4/13 , H01M10/052 , H01M10/058 , H01M4/62
摘要： A non-aqueous electrolyte secondary battery (10) includes an electrode body (14) in which a positive electrode (11) and a negative electrode (12) face each other across a separator (13), and a battery case (15) that accommodates the electrode body (14). The positive electrode (11) includes a positive electrode composite material layer containing a binder, and the negative electrode (12) includes a negative electrode composite material layer containing a binder. The non-aqueous electrolyte secondary battery (10) is characterized in that, in a case of use thereof in a fixed state, and the electrode body (14) is equally divided into two of an upper half region and a lower half region with respect to a vertical direction in this fixed state, a swelling degree with an electrolyte is higher for the binder disposed in the upper half region than a swelling degree with the electrolyte for the binder disposed in the lower half region, in at least one of the positive electrode (11) and the negative electrode (12).
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公开(公告)号：EP4366016A1
公开(公告)日：2024-05-08
申请号：EP22832739.1
申请日：2022-06-07
发明人： SAKITANI Nobuhiro
IPC分类号： H01M10/052 , H01M4/13 , H01M4/36 , H01M4/587
CPC分类号： Y02E60/10 , H01M4/13 , H01M10/052 , H01M4/36 , H01M4/587
摘要： A non-aqueous electrolyte secondary battery (10) is characterized in that: an electrode body (14) in which a positive electrode (11) and a negative electrode (12) oppose each other through a separator (13), and a battery case (15) accommodating the electrode body (14), are provided; the negative electrode (12) has a negative electrode mixture layer containing first carbon particles and second carbon particles having a lower internal porosity than the first carbon particles; the non-aqueous electrolyte secondary battery (10) is used in a fixed state; and when the electrode body (14) in the fixed state is bisected into a top half region and a bottom half region with respect to the vertical direction, the second carbon particles are contained in greater number in the top half region than the bottom half region.
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