Patents by Inventor Natsuki Toyota
Natsuki Toyota has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10224519Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid which is fixed to the container and is closing the pouring hole. The sealing lid has a welding mark existing in a ring shape with a depth through the sealing lid to a lid body of the container, and an inner circumferential side molten mark existing in a ring shape overlapping with the welding mark, on the inner circumferential side of the welding mark in the sealing lid, with a depth corresponding to the thickness of the sealing lid.Type: GrantFiled: January 23, 2012Date of Patent: March 5, 2019Assignee: Toshiba CorporationInventors: Yoshitaka Kawada, Tetsuo Sakai, Natsuki Toyota, Naotada Okada, Susumu Yahagi
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Publication number: 20180019448Abstract: According to one embodiment, there is provided a battery having a plurality of current collector tabs extended from a plurality of points of a current collector of at least one electrode of a positive electrode and a negative electrode. The battery further has a lid and a lead. The lead has a current collector tab junctional part connected with the current collector tabs, a lid junctional part fixed to the lid, and a vibration absorber part linking the current collector tab junctional part to the lid junctional part.Type: ApplicationFiled: September 27, 2017Publication date: January 18, 2018Applicant: Kabushiki Kaisha ToshibaInventors: Toshifumi SHIMIZU, Kengo KURATA, Natsuki TOYOTA, Eiki KASHIWAZAKI
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Patent number: 9812675Abstract: According to one embodiment, there is provided a battery having a plurality of current collector tabs extended from a plurality of points of a current collector of at least one electrode of a positive electrode and a negative electrode. The battery further has a lid and a lead. The lead has a current collector tab junctional part connected with the current collector tabs, a lid junctional part fixed to the lid, and a vibration absorber part linking the current collector tab junctional part to the lid junctional part.Type: GrantFiled: June 24, 2014Date of Patent: November 7, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Toshifumi Shimizu, Kengo Kurata, Natsuki Toyota, Eiki Kashiwazaki
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Patent number: 9673440Abstract: According to one embodiment, there is provided a battery including a case, a lid, an electrode group, an intermediate lead, and a terminal lead. The electrode group has an end face opposed to the lid and includes current collector tabs extending from the end face. The intermediate lead contains an electrode group joint and a lead joint. The terminal lead is electrically connected to the lid and the lead joint of the intermediate lead. Each of the current collector tabs has a tip portion whose width in the direction perpendicular to the extending direction is narrow. The tip portion thereof is electrically connected to the electrode group joint.Type: GrantFiled: March 6, 2014Date of Patent: June 6, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Haruchika Ishii, Eiki Kashiwazaki, Souichi Hanafusa, Natsuki Toyota, Toshifumi Shimizu, Yasuaki Hara, Tatsuya Shinoda
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Patent number: 9601734Abstract: In general, according to one embodiment, there is provided a battery. This battery includes a container, a lid, a gas-relief vent, an electrode group, an intermediate lead, and a terminal lead. The gas-relief vent is provided in the lid. The intermediate lead includes a first lead-joint part, an electrode-group-joint part, and a leg part. The leg part connects the first lead-joint part and the electrode-group-joint part to each other. The first lead-joint part and the electrode-group-joint part are located on planes different from each other.Type: GrantFiled: March 6, 2014Date of Patent: March 21, 2017Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Haruchika Ishii, Eiki Kashiwazaki, Souichi Hanafusa, Natsuki Toyota, Tsutomu Matsui, Tatsuya Shinoda
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Patent number: 9077047Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid fixed to the container and closing the pouring hole. The container has a plurality of grooves extending in parallel along the outer edge of the pouring hole, in a predetermined region that surrounds the periphery of the pouring hole, and the sealing lid is provided on the plurality of grooves in such a manner as to close the pouring hole and is fixed to the container.Type: GrantFiled: January 23, 2012Date of Patent: July 7, 2015Assignee: Toshiba CorporationInventors: Yoshitaka Kawada, Natsuki Toyota, Naotada Okada, Susumu Yahagi
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Patent number: 9054393Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid fixed to the container and closing the pouring hole. The container has a plurality of grooves extending in parallel along the outer edge of the pouring hole, in a predetermined region that surrounds the periphery of the pouring hole, and the sealing lid is provided on the plurality of grooves in such a manner as to close the pouring hole and is fixed to the container.Type: GrantFiled: September 19, 2013Date of Patent: June 9, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Yoshitaka Kawada, Natsuki Toyota, Naotada Okada, Susumu Yahagi
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Patent number: 9023501Abstract: According to one embodiment, there is provided a battery having a plurality of current collector tabs extended from a plurality of points of a current collector of at least one electrode of a positive electrode and a negative electrode. The battery further has a lid and a lead. The lead has a current collector tab junctional part connected with the current collector tabs, a lid junctional part fixed to the lid, and a vibration absorber part linking the current collector tab junctional part to the lid junctional part.Type: GrantFiled: August 17, 2012Date of Patent: May 5, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Toshifumi Shimizu, Kengo Kurata, Natsuki Toyota, Eiki Kashiwazaki
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Publication number: 20140308549Abstract: According to one embodiment, there is provided a battery having a plurality of current collector tabs extended from a plurality of points of a current collector of at least one electrode of a positive electrode and a negative electrode. The battery further has a lid and a lead. The lead has a current collector tab junctional part connected with the current collector tabs, a lid junctional part fixed to the lid, and a vibration absorber part linking the current collector tab junctional part to the lid junctional part.Type: ApplicationFiled: June 24, 2014Publication date: October 16, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Toshifumi SHIMIZU, Kengo Kurata, Natsuki Toyota, Eiki Kashiwazaki
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Publication number: 20140272550Abstract: According to one embodiment, there is provided a battery including a case, a lid, an electrode group, an intermediate lead, and a terminal lead. The electrode group has an end face opposed to the lid and includes current collector tabs extending from the end face. The intermediate lead contains an electrode group joint and a lead joint. The terminal lead is electrically connected to the lid and the lead joint of the intermediate lead. Each of the current collector tabs has a tip portion whose width in the direction perpendicular to the extending direction is narrow. The tip portion thereof is electrically connected to the electrode group joint.Type: ApplicationFiled: March 6, 2014Publication date: September 18, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Haruchika ISHII, Eiki Kashiwazaki, Souichi Hanafusa, Natsuki Toyota, Toshifumi Shimizu, Yasuaki Hara, Tatsuya Shinoda
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Publication number: 20140272487Abstract: In general, according to one embodiment, there is provided a battery. This battery includes a container, a lid, a gas-relief vent, an electrode group, an intermediate lead, and a terminal lead. The gas-relief vent is provided in the lid. The intermediate lead includes a first lead-joint part, an electrode-group-joint part, and a leg part. The leg part connects the first lead-joint part and the electrode-group-joint part to each other. The first lead-joint part and the electrode-group-joint part are located on planes different from each other.Type: ApplicationFiled: March 6, 2014Publication date: September 18, 2014Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Haruchika ISHII, Eiki Kashiwazaki, Souichi Hanafusa, Natsuki Toyota, Tsutomu Matsui, Tatsuya Shinoda
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Patent number: 8808910Abstract: A non-aqueous electrolyte secondary battery includes an electrode body including a positive electrode and a negative electrode superimposed upon each other with a separator interposed therebetween. The negative electrode is superimposed upon the positive electrode in a state where a negative electrode active material layer, except the part on a proximal end part of a negative electrode tab, is positioned inside an outer edge of a positive electrode active material layer of the positive electrode. A width H1 of the negative electrode active material layer including the part on the proximal end part of the negative electrode tab, width H2 of the negative electrode active material layer or negative electrode current collector at a part other than the negative electrode tab, and width H3 of the positive electrode active material layer are formed to satisfy the relationships of H2<H3, and (H1?H2)?(H3?H2)÷2.Type: GrantFiled: August 30, 2013Date of Patent: August 19, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Hideaki Morishima, Takashi Kobayashi, Seiichi Hikata, Yoshikazu Kobayashi, Takahisa Ohsaki, Natsuki Toyota, Haruchika Ishii
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Patent number: 8758918Abstract: According to one embodiment, there is provided a battery having a plurality of current collector tabs extended from a plurality of points of a current collector of at least one electrode of a positive electrode and a negative electrode. The battery further has a lid and a lead. The lead has a current collector tab junctional part connected with the current collector tabs, a lid junctional part fixed to the lid, and a vibration absorber part linking the current collector tab junctional part to the lid junctional part.Type: GrantFiled: August 17, 2012Date of Patent: June 24, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Toshifumi Shimizu, Kengo Kurata, Natsuki Toyota, Eiki Kashiwazaki
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Publication number: 20140020241Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid fixed to the container and closing the pouring hole. The container has a plurality of grooves extending in parallel along the outer edge of the pouring hole, in a predetermined region that surrounds the periphery of the pouring hole, and the sealing lid is provided on the plurality of grooves in such a manner as to close the pouring hole and is fixed to the container.Type: ApplicationFiled: September 19, 2013Publication date: January 23, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Yoshitaka Kawada, Natsuki Toyota, Naotada Okada, Susumu Yahagi
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Publication number: 20140004419Abstract: A non-aqueous electrolyte secondary battery includes an electrode body including a positive electrode and a negative electrode superimposed upon each other with a separator interposed therebetween. The negative electrode is superimposed upon the positive electrode in a state where a negative electrode active material layer, except the part on a proximal end part of a negative electrode tab, is positioned inside an outer edge of a positive electrode active material layer of the positive electrode. A width H1 of the negative electrode active material layer including the part on the proximal end part of the negative electrode tab, width H2 of the negative electrode active material layer or negative electrode current collector at a part other than the negative electrode tab, and width H3 of the positive electrode active material layer are formed to satisfy the relationships of H2<H3, and (H1?H2)?(H3?H2)÷2.Type: ApplicationFiled: August 30, 2013Publication date: January 2, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Hideaki MORISHIMA, Takashi Kobayashi, Seiichi Hikata, Yoshikazu Kobayashi, Takahisa Ohsaki, Natsuki Toyota, Haruchika Ishii
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Publication number: 20130065124Abstract: A non-aqueous electrolyte secondary battery includes an electrode body including a positive electrode and a negative electrode superimposed upon each other with a separator interposed therebetween. The negative electrode is superimposed upon the positive electrode in a state where a negative electrode active material layer, except the part on a proximal end part of a negative electrode tab, is positioned inside an outer edge of a positive electrode active material layer of the positive electrode. A width H1 of the negative electrode active material layer including the part on the proximal end part of the negative electrode tab, width H2 of the negative electrode active material layer or negative electrode current collector at a part other than the negative electrode tab, and width H3 of the positive electrode active material layer are formed to satisfy the relationships of H2<H3, and (H1?H2)?(H3?H2)÷2.Type: ApplicationFiled: November 6, 2012Publication date: March 14, 2013Inventors: Hideaki MORISHIMA, Takashi KOBAYASHI, Seiichi HIKATA, Yoshikazu KOBAYASHI, Takahisa OHSAKI, Natsuki TOYOTA, Haruchika ISHII
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Patent number: 8334071Abstract: A non-aqueous electrolyte secondary battery includes an electrode body including a positive electrode and a negative electrode superimposed upon each other with a separator interposed therebetween. The negative electrode is superimposed upon the positive electrode in a state where a negative electrode active material layer, except the part on a proximal end part of a negative electrode tab, is positioned inside an outer edge of a positive electrode active material layer of the positive electrode. A width H1 of the negative electrode active material layer including the part on the proximal end part of the negative electrode tab, width H2 of the negative electrode active material layer or negative electrode current collector at a part other than the negative electrode tab, and width H3 of the positive electrode active material layer are formed to satisfy the relationships of H2<H3, and (H1?H2)?(H3?H2)÷2.Type: GrantFiled: September 28, 2009Date of Patent: December 18, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Hideaki Morishima, Takashi Kobayashi, Seiichi Hikata, Yoshikazu Kobayashi, Takahisa Ohsaki, Natsuki Toyota, Haruchika Ishii
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Publication number: 20120308855Abstract: According to one embodiment, there is provided a battery having a plurality of current collector tabs extended from a plurality of points of a current collector of at least one electrode of a positive electrode and a negative electrode. The battery further has a lid and a lead. The lead has a current collector tab junctional part connected with the current collector tabs, a lid junctional part fixed to the lid, and a vibration absorber part linking the current collector tab junctional part to the lid junctional part.Type: ApplicationFiled: August 17, 2012Publication date: December 6, 2012Inventors: Toshifumi Shimizu, Kengo Kurata, Natsuki Toyota, Eiki Kashiwazaki
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Publication number: 20120189903Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid fixed to the container and closing the pouring hole. The container has a plurality of grooves extending in parallel along the outer edge of the pouring hole, in a predetermined region that surrounds the periphery of the pouring hole, and the sealing lid is provided on the plurality of grooves in such a manner as to close the pouring hole and is fixed to the container.Type: ApplicationFiled: January 23, 2012Publication date: July 26, 2012Inventors: Yoshitaka Kawada, Natsuki Toyota, Naotada Okada, Susumu Yahagi
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Publication number: 20120189904Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid which is fixed to the container and is closing the pouring hole. The sealing lid has a welding mark existing in a ring shape with a depth through the sealing lid to a lid body of the container, and an inner circumferential side molten mark existing in a ring shape overlapping with the welding mark, on the inner circumferential side of the welding mark in the sealing lid, with a depth corresponding to the thickness of the sealing lid.Type: ApplicationFiled: January 23, 2012Publication date: July 26, 2012Inventors: Yoshitaka Kawada, Tetsuo Sakai, Natsuki Toyota, Naotada Okada, Susumu Yahagi