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公开(公告)号：US20240291119A1
公开(公告)日：2024-08-29
申请号：US18572281
申请日：2022-06-09
发明人： Shin Haraguchi , Oose Okutani , Ryota Okimoto
IPC分类号： H01M50/538 , H01M10/04 , H01M50/107 , H01M50/152 , H01M50/159 , H01M50/167
CPC分类号： H01M50/538 , H01M10/0431 , H01M50/107 , H01M50/152 , H01M50/159 , H01M50/167
摘要： A cylindrical battery comprises an electrode body in which a long positive electrode having a plurality of positive electrode lead portions and a long negative electrode are wound with a separator therebetween, a bottomed cylindrical external can that accommodates the electrode body, and a sealing body which is crimp fixed to an opening of the external can. The sealing body has a sealing plate and a current collector plate having a through-hole, and the plurality of positive electrode lead portions pass through the through-hole in the current collector plate and are bent and joined above the current collector plate.
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公开(公告)号：US20240291015A1
公开(公告)日：2024-08-29
申请号：US18572319
申请日：2022-06-15
发明人： Nobuhiro Sakitani
IPC分类号： H01M10/04 , H01M50/107 , H01M50/152
CPC分类号： H01M10/0431 , H01M50/107 , H01M50/152
摘要： A non-aqueous electrolyte secondary battery includes an electrode body in which a positive electrode and a negative electrode face each other across a separator. The positive electrode includes a positive electrode composite material layer containing a binder, and the negative electrode includes a negative electrode composite material layer containing a binder. The non-aqueous electrolyte secondary battery is characterized in that, in a case of use thereof in a fixed state, and the electrode body 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 and the negative electrode.
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公开(公告)号：US20240290960A1
公开(公告)日：2024-08-29
申请号：US18693335
申请日：2022-06-23
发明人： Masashi Aotani
CPC分类号： H01M4/366 , H01M4/131 , H01M4/525 , H01M2004/021 , H01M2004/028
摘要： A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure is provided with a positive electrode, a negative electrode, a separator that separates the positive electrode and the negative electrode from each other, and a nonaqueous electrolyte. With respect to this nonaqueous electrolyte secondary battery, the positive electrode comprises a positive electrode collector, a first positive electrode mixture layer that is formed on the surface of the positive electrode collector, and a second positive electrode mixture layer that is formed on the surface of the first positive electrode mixture layer; the first positive electrode mixture layer contains a first positive electrode active material; the second positive electrode mixture layer contains a second positive electrode active material; and the Ni content ratio in the second positive electrode active material is lower than the Ni content ratio in the first positive electrode active material.
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公开(公告)号：US20240258555A1
公开(公告)日：2024-08-01
申请号：US18561128
申请日：2022-05-20
IPC分类号： H01M10/04 , H01M50/107 , H01M50/538
CPC分类号： H01M10/0431 , H01M50/107 , H01M50/538
摘要： This non-aqueous electrolyte secondary battery comprises: an electrode body in which a positive electrode and a negative electrode are wound with a separator therebetween; an electrolyte; and a cylindrical outer can, wherein the positive electrode has a current collector and a mixed layer laminated on at least a portion of the surface of the current collector, a plurality of exposed parts where the current collector is exposed are formed on the surface of the positive electrode, tabs are connected to the respective exposed parts, and when the rotation angle of the electrode body from a winding start-side end to a winding finish-side end of the exposed parts relative to the winding center is defined as an exposed part angle, the exposed part angle of the exposed parts positioned on the winding start side is greater than the exposed part angle of the exposed parts positioned on the winding finish side.
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公开(公告)号：US20240235182A9
公开(公告)日：2024-07-11
申请号：US18546954
申请日：2022-02-22
发明人： KEITARO TANIGUCHI , JUNPEI ITO , ATSUSHI SUYAMA
CPC分类号： H02H7/18 , H01H9/54 , H01H37/761 , H01M10/48 , H02J7/00302 , H02J7/0031
摘要： A fuse element of a SCP is reliably fusion-cut with a simple circuit configuration to interrupt an electric current. In a power supply equipped with a battery unit, a control circuit (7) is configured to control turning on and off of a switch (6) configured to connect the SCP (3) which is connected in series to a battery unit (1) and is configured to interrupt charge and discharge currents in an abnormal state. Battery unit 1 includes battery cells (2) connected in series to one another. The SCP (3) includes fuse element 4 connected in series to an output end of the battery unit (1), and a heater (5) configured to fusion-cut the fuse element (4). The switch (6) includes switching elements (10) each of which has one terminal connected to the heater (5) and another terminal connected to a corresponding one of different-voltage terminals (11) of the battery unit 1. In control circuit (7), a selection circuit (9) is configured to select, according to the voltage detected by the voltage detection circuit (8), a switching element (10) to be turned on, and the switching element (10) which is turned on connects the battery unit (1) to the heater (5) to fusion-cut the fuse element (4).
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公开(公告)号：US20240234937A9
公开(公告)日：2024-07-11
申请号：US18546935
申请日：2022-02-22
IPC分类号： H01M50/367 , H01M50/204 , H01M50/342 , H01M50/383
CPC分类号： H01M50/367 , H01M50/342 , H01M50/383 , H01M50/204
摘要： A flame due to abnormality is prevented from leaking to an outside. A battery pack includes a first inorganic plate disposed at an opening of a housing and spaced apart from a battery holder by a first gap (d1), and a second inorganic plate spaced apart from the first inorganic plate by a second gap (d2). The first inorganic plate has first through-holes opened in a predetermined first pattern. The second inorganic plate has second through-holes opened in a prescribed second pattern. The housing includes an inner rib projecting from an inner surface of the opening of the housing. The inner rib is provided between the first and second inorganic plates to form the second gap (d2). The first and second inorganic plates are positioned such that the second through-holes are deviated from the first through-holes to prevent an inside of the housing from being viewed from an outside of the housing through the second through-holes.
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公开(公告)号：US20240162584A1
公开(公告)日：2024-05-16
申请号：US18281368
申请日：2022-03-08
发明人： Kenichi Honoki
IPC分类号： H01M50/578 , H01M50/107 , H01M50/342
CPC分类号： H01M50/578 , H01M50/107 , H01M50/3425 , H01M2200/20
摘要： A sealed battery comprises: a bottomed tubular outer can accommodating an electrode body; and a sealing body for sealing an opening of the outer can. The present invention is characterized in that: the sealing body includes a current blocking mechanism that seals the electrode body together with the outer can and is activated in response to gas pressure inside the battery, and a cap that forms a sealed space above the current blocking mechanism; and the cap includes an explosion-proof valve that opens in response to the gas pressure inside the battery.
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公开(公告)号：US20240154266A1
公开(公告)日：2024-05-09
申请号：US18280550
申请日：2022-03-08
发明人： Ryota Okimoto
IPC分类号： H01M50/536 , H01M50/107 , H01M50/119 , H01M50/184 , H01M50/534
CPC分类号： H01M50/536 , H01M50/107 , H01M50/119 , H01M50/184 , H01M50/534
摘要： Provided is a low-resistance sealed battery in which solidification cracking of a weld part of a negative electrode lead and an outer can is inhibited. A sealed battery according to one aspect of the present disclosure comprises: an electrode body obtained by winding a positive electrode and a negative electrode with a separator therebetween; a bottomed cylinder-shaped outer can that accommodates the electrode body; and a sealing body that blocks an opening part of the outer can. The outer can and a negative electrode lead connected to the negative electrode are welded at a weld part formed from the outside surface of the outer can to the negative electrode lead. The outer can is composed of a metal including Fe, the negative electrode lead is composed of a metal having Cu as a principal ingredient, and the Cu concentration of the weld part is 10 mass % or less.
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公开(公告)号：US20240113542A1
公开(公告)日：2024-04-04
申请号：US18262568
申请日：2022-01-20
发明人： OSAMU OHASHI
IPC分类号： H02J7/00
CPC分类号： H02J7/007 , H02J7/0031 , H02J7/0047
摘要： Power consumption of an activation circuit in a low power consumption mode is reduced. A power supply device includes: a battery module (10) including chargeable battery cells (1); a battery connection circuit (2) connected to the battery module (10) and being switchable to a low power consumption mode; an activation circuit (3) configured to activate the battery connection circuit (2); and an activation switch (4) connected to the activation circuit (3) and configured to output an activation signal. The activation circuit (3) includes: an input transistor (5) having a base and emitter connected to the activation switch (4) between the base and emitter, the input transistor (5) being configured to be switched to an off state in response to an on-signal from the activation switch (4); and an FET output circuit (6) connected to an output side of the input transistor (5) and configured to output an activation signal to the battery connection circuit (2) in a low power consumption state by switching the input transistor (5) from turned on to turned off.
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公开(公告)号：US20240088390A1
公开(公告)日：2024-03-14
申请号：US18273186
申请日：2022-01-25
IPC分类号： H01M4/62 , H01M4/133 , H01M4/134 , H01M4/36 , H01M4/48 , H01M4/583 , H01M10/0562 , H01M10/0587
CPC分类号： H01M4/62 , H01M4/133 , H01M4/134 , H01M4/364 , H01M4/483 , H01M4/583 , H01M10/0562 , H01M10/0587 , H01M2004/027
摘要： A non-aqueous electrolyte secondary battery according to an aspect of the present disclosure comprises: an electrode body in which a belt-shaped positive electrode and a belt-shaped negative electrode are wound with a separator therebetween; an electrolyte; and an outer case which accommodates the electrode body and the electrolyte. The negative electrode has a negative electrode current collector and a negative electrode mixture layer which is formed on a surface of the negative electrode current collector and which contains a negative electrode active material and a solid electrolyte. The negative electrode mixture layer has a region in which the solid electrolyte content in the inner winding end part is higher than the solid electrolyte content in the outer winding end part, and the solid electrolyte content continuously decreases from the inner winding end part side to the outer winding end part side.
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