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公开(公告)号：US20230207948A1
公开(公告)日：2023-06-29
申请号：US18086454
申请日：2022-12-21
Inventor： Kento FUKUDA , Yuta NEMOTO , Kengo IWAKURA , Kentaro SUZUKI
IPC: H01M50/264 , H01M50/209 , H01M10/04
CPC classification number: H01M50/264 , H01M50/209 , H01M10/0404 , H01M10/0481
Abstract: A manufacturing system for a battery pack includes a front-half unit that applies a first pressure to press a stack in a single direction for a certain period of time and a rear-half unit that then causes a restraining member to restrain the stack while applying a second pressure smaller than the first pressure to press the stack in the single direction. The front-half unit includes a front-half pressure application portion that presses the stack and a front-half restriction portion that restricts a position of the stack. The front-half pressure application portion presses the stack with the front-half restriction portion in contact with the stack. The rear-half unit includes a rear-half pressure application portion that presses the stack and a rear-half restriction portion that restricts the position of the stack. The rear-half pressure application portion presses the stack with the front-half or rear-half restriction portion in contact with the stack.
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公开(公告)号：US20160336579A1
公开(公告)日：2016-11-17
申请号：US15149676
申请日：2016-05-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuta NEMOTO , Toshinori OKURA , Takeshi IIDA , Noriyuki MARUYAMA , Hiroaki YOSHIDA
CPC classification number: H01M2/345 , H01M2/30 , H01M2200/20
Abstract: When a temperature inside a secondary battery becomes high and a gas pressure inside a battery case increases, an inversion plate is pressed due to the gas pressure so as to project and curve in a projecting manner toward an external terminal board. Due to such a deformation, a load is transmitted to a current interruption piece via a load transmission portion. At this time, due to a pushing-up force of the load transmission portion, a vulnerable breaking portion forming part of a peripheral edge of the current interruption piece breaks, so that the current interruption piece is displaced to bend in a V-shape via a folding portion. As a result, the secondary battery is brought into an unusable state. Such a configuration can attain simplification of a structure to interrupt a current.
Abstract translation: 当二次电池内部的温度变高并且电池壳体内的气体压力增加时，由于气体压力而压缩反转板，从而突出地向外部端子板弯曲。 由于这种变形，经由负载传递部分将负载传递到电流中断件。 此时，由于负载传递部的上推力，形成电流中断片的周缘的一部分的脆弱的断开部断裂，使得电流中断片通过V字形经由 折叠部分。 结果，二次电池进入不可用状态。 这样的结构可以简化中断电流的结构。
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公开(公告)号：US20190189995A1
公开(公告)日：2019-06-20
申请号：US16218857
申请日：2018-12-13
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuta NEMOTO , Kaito MATSUBARA
Abstract: A sealed battery includes a battery case including a mounting hole, an internal terminal disposed in the battery case and including a shaft portion inserted through the mounting hole, an external terminal disposed on an outside of the battery case and including an insertion hole through which the shaft portion of the internal terminal is inserted, and a gasket and an insulator interposed between the battery case and the internal terminal and between the battery case and the external terminal to insulate the internal terminal and the external terminal from the battery case. The shaft portion of the internal terminal is fastened to the insertion hole of the external terminal. The external terminal includes a raised portion provided around a portion of the external terminal onto which the shaft portion of the internal terminal is fastened.
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公开(公告)号：US20190140218A1
公开(公告)日：2019-05-09
申请号：US16180080
申请日：2018-11-05
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuta NEMOTO
Abstract: A power storage device includes an electrode assembly, an accommodation case accommodating the electrode assembly, an external terminal provided on an outer surface of the accommodation case, a collector terminal connecting the electrode assembly and the external terminal, and a welding portion connecting the collector terminal and the external terminal. The external terminal includes an opposed surface opposed to the outer surface and an outer surface located opposite to the opposed surface. The external terminal has an insertion hole extending from the opposed surface toward the outer surface and a step portion located around an opening in the insertion hole located on a side of the outer surface. The collector terminal includes a contact surface in contact with a surface of the step portion. The welding portion is formed to weld the surface of the step portion and the contact surface.
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公开(公告)号：US20190109315A1
公开(公告)日：2019-04-11
申请号：US16148355
申请日：2018-10-01
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Tomotaka HAGINO , Yuta NEMOTO , Tomohiro ONO , Yoichi NARUSE
IPC: H01M2/30 , H01M2/22 , H01M2/02 , H01M2/08 , H01M10/0525 , H01M10/058
Abstract: A battery manufacturing method includes assembling an internal terminal, a gasket, a battery case component, an insulator, and an external terminal into a state where a cylindrical part of the gasket is fitted in a mounting hole of the battery case component, a projecting part of the internal terminal is fitted in the cylindrical part of the gasket, the insulator is disposed on an outer surface of the battery case component with the projecting part fitted in a through-hole, and the external terminal is disposed on top of the insulator so as to lie on the projecting part. The external terminal is pressed against the projecting part of the internal terminal, and the external terminal or the internal terminal is vibrated to thereby weld together the projecting part and the external terminal in a solid state.
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Patent Agency Ranking
公开(公告)号：US20230369677A1
公开(公告)日：2023-11-16
申请号：US18143418
申请日：2023-05-04
Applicant: PRIMEARTH EV ENERGY CO., LTD. , TOYOTA JIDOSHA KABUSHIKI KAISHA , PRIME PLANET ENERGY & SOLUTIONS, INC.
Inventor： Ryotaro SAKAI , Kousuke MURAISHI , Kentaro SUZUKI , Yuta NEMOTO , Hiroaki IKEDA
IPC: H01M10/6566 , H01M50/209 , H01M50/291 , H01M50/538 , H01M10/613
CPC classification number: H01M10/6566 , H01M50/209 , H01M50/291 , H01M50/538 , H01M10/613
Abstract: A battery pack includes battery cells and a spacer arranged between two adjacent battery cells. Each battery cell includes an electrode body and a case. The electrode body includes an upper curved portion, a flat portion, and a lower curved portion. The spacer presses one side wall of the case of one of the adjacent battery cells toward an inner side of the case at a part where the side wall opposes a region from the upper curved portion to the lower curved portion. The spacer forms passages for cooling air between the spacer and the side wall. A first cooling efficiency of the cooling air per unit area at a first opposing portion of the side wall that opposes the upper curved portion is less than a second cooling efficiency per unit area at a second opposing portion of the side wall that opposes the flat portion.
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公开(公告)号：US20180130995A1
公开(公告)日：2018-05-10
申请号：US15788245
申请日：2017-10-19
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuta NEMOTO , Tomohiro ONO , Toshinori OKURA
CPC classification number: H01M2/30 , H01M2/0277 , H01M2/06 , H01M10/04
Abstract: A first terminal including an insertion hole is placed on one side of a lid of a battery case with one or more insulating materials interposed therebetween. An inner circumferential surface defining the insertion hole includes a first rim and a second rim at a position farther away from the one or more insulating materials than the first rim is. The second rim includes an inclined surface with a recess that includes a bottom at a position set back inside the first terminal from the inclined surface. The second terminal has a shaft part inserted through a mounting hole of the lid and the insertion hole. A leading end of the shaft part is riveted, and at least a portion of the shaft part reaches into the recess.
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公开(公告)号：US20180090738A1
公开(公告)日：2018-03-29
申请号：US15715343
申请日：2017-09-26
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Tomohiro ONO , Yuta NEMOTO , Takashi TAKIMOTO
CPC classification number: H01M2/26 , H01M2/021 , H01M2/0217 , H01M2/345 , H01M10/052 , H01M2200/20
Abstract: A secondary battery according to the present disclosure includes a battery case, an electrode member contained in the battery case, and a lid configured to hermetically seal the battery case. A current-carrying part, which electrically connects a collector terminal of the electrode member with an external electrode terminal, includes a displacement part configured to be displaced outward in response to a rise in an internal pressure of the battery case, the displacement part being connected to at least a part of the collector terminal. When the displacement part is displaced outward in response to the rise in the internal pressure of the battery case, the connection between the displacement part and the collector terminal is disconnected and the current-carrying part is electrically cut off from the collector terminal. In the secondary battery according to the present disclosure, the current-carrying part including the displacement part is disposed in the lid.
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公开(公告)号：US20200006799A1
公开(公告)日：2020-01-02
申请号：US16536776
申请日：2019-08-09
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Toshinori OKURA , Tomohiro ONO , Yuta NEMOTO
IPC: H01M10/04
Abstract: An assembly device for a battery component proposed herein includes at least one of members that are a positioning pin and a chuck, and a suction machine. There is at least one exhaust passage inside the at least one of the members that are the positioning pin and the chuck. An outer peripheral surface of the at least one of the members that are the positioning pin and the chuck has at least one dust-collecting port to which the at least one exhaust passage opens. The at least one exhaust passage is connected to the suction machine.
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公开(公告)号：US20180102510A1
公开(公告)日：2018-04-12
申请号：US15681515
申请日：2017-08-21
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yuta NEMOTO , Tomohiro ONO
CPC classification number: H01M2/0217 , H01M2/021 , H01M2/0404 , H01M2/0473 , H01M2/30 , H01M2/345 , H01M2/348 , H01M2200/106 , H01M2200/20
Abstract: A secondary battery according to an embodiment of the present disclosure includes an external terminal electrically connecting a charge collector disposed inside a battery case with a terminal, a first part electrically connected to the charge collector, a second part electrically connected to the terminal, a first connection part electrically connecting the first part with the second part, and a second connection part electrically connecting the first part with the second part, the second connection part being different from the first connection part. The first connection part is ruptured when a displacement of the displacement part toward the outside of the battery case is transferred to the first connection part, and the second connection part becomes nonconductive when a temperature of the second connection part reaches a predefined temperature.
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