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公开(公告)号：US10797297B2
公开(公告)日：2020-10-06
申请号：US16177724
申请日：2018-11-01
Applicant: SANYO Electric Co., Ltd.
Inventor： Ryoichi Wakimoto , Naoya Tada , Atsushi Tsuji , Yoshinori Yokoyama
IPC: H01M2/34 , H01M2/30 , H01M2/26 , H01M10/0525
Abstract: A secondary battery includes an electrode body including a positive electrode plate and a negative electrode plate; a battery case containing the electrode body; a positive electrode terminal attached to the battery case; a conductive member having an opening adjacent to the electrode body; a deformation plate that seals the opening, and a current collector. The positive electrode plate and the positive electrode terminal are electrically connected to each other via a first positive electrode current collector, the deformation plate, and the conductive member. The deformation plate has a thick portion, which has a larger thickness than the surrounding area, in a central part. The thick portion of the deformation plate is welded to the first positive electrode current collector to form a weld.
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公开(公告)号：US10811668B2
公开(公告)日：2020-10-20
申请号：US16177727
申请日：2018-11-01
Applicant: SANYO Electric Co., Ltd.
Inventor： Ryoichi Wakimoto , Naoya Tada , Atsushi Tsuji , Yoshinori Yokoyama
IPC: H01M2/36 , H01M2/34 , H01M2/26 , H01M2/30 , H01M10/0525
Abstract: A secondary battery includes an electrode body including a positive electrode plate and a negative electrode plate; a battery case containing the electrode body; a terminal attached to the battery case; a conductive member having an opening adjacent to the electrode body; a deformation plate that seals the opening, and a current collector. The positive electrode plate and a positive electrode terminal are electrically connected to each other via a first positive electrode current collector, the deformation plate, and the conductive member. The first positive electrode current collector has a through-hole. The deformation plate is disposed to face the through-hole. A portion of the first positive electrode current collector distant from the through-hole is welded to the deformation plate to form a weld.
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公开(公告)号：US20190140251A1
公开(公告)日：2019-05-09
申请号：US16177727
申请日：2018-11-01
Applicant: SANYO Electric Co., Ltd.
Inventor： Ryoichi Wakimoto , Naoya Tada , Atsushi Tsuji , Yoshinori Yokoyama
IPC: H01M2/34 , H01M2/26 , H01M10/0525 , H01M2/30
Abstract: A secondary battery includes an electrode body including a positive electrode plate and a negative electrode plate; a battery case containing the electrode body; a terminal attached to the battery case; a conductive member having an opening adjacent to the electrode body; a deformation plate that seals the opening, and a current collector. The positive electrode plate and a positive electrode terminal are electrically connected to each other via a first positive electrode current collector, the deformation plate, and the conductive member. The first positive electrode current collector has a through-hole. The deformation plate is disposed to face the through-hole. A portion of the first positive electrode current collector distant from the through-hole is welded to the deformation plate to form a weld.
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Patent Agency Ranking
公开(公告)号：US20190140250A1
公开(公告)日：2019-05-09
申请号：US16177724
申请日：2018-11-01
Applicant: SANYO Electric Co., Ltd.
Inventor： Ryoichi Wakimoto , Naoya Tada , Atsushi Tsuji , Yoshinori Yokoyama
IPC: H01M2/34
CPC classification number: H01M2/345 , H01M2/26 , H01M2/30 , H01M10/0525 , H01M2220/20
Abstract: A secondary battery includes an electrode body including a positive electrode plate and a negative electrode plate; a battery case containing the electrode body; a positive electrode terminal attached to the battery case; a conductive member having an opening adjacent to the electrode body; a deformation plate that seals the opening, and a current collector. The positive electrode plate and the positive electrode terminal are electrically connected to each other via a first positive electrode current collector, the deformation plate, and the conductive member. The deformation plate has a thick portion, which has a larger thickness than the surrounding area, in a central part. The thick portion of the deformation plate is welded to the first positive electrode current collector to form a weld.
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公开(公告)号：US20190115611A1
公开(公告)日：2019-04-18
申请号：US16155226
申请日：2018-10-09
Applicant: SANYO Electric Co., Ltd.
Inventor： Ryoichi Wakimoto , Naoya Tada
Abstract: A method of manufacturing a secondary battery including an electrode body including a positive electrode plate and a negative electrode plate, an outer package including an opening and housing the electrode body, a sealing plate sealing the opening, a negative electrode terminal attached to the sealing plate, a negative electrode tab portion provided in the negative electrode plate, and a negative electrode collector electrically connecting the negative electrode tab portion and the negative electrode terminal to each other, the method including welding a flange portion of the negative electrode terminal and the negative electrode collector together by projecting an energy ray, the negative electrode collector includes, before the welding, a rough surface portion, and in the welding, the flange portion of the negative electrode terminal and the negative electrode collector are connected by welding by projecting an energy ray onto the rough surface portion.
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公开(公告)号：US10938057B2
公开(公告)日：2021-03-02
申请号：US16155226
申请日：2018-10-09
Applicant: SANYO Electric Co., Ltd.
Inventor： Ryoichi Wakimoto , Naoya Tada
Abstract: A method of manufacturing a secondary battery including an electrode body including a positive electrode plate and a negative electrode plate, an outer package including an opening and housing the electrode body, a sealing plate sealing the opening, a negative electrode terminal attached to the sealing plate, a negative electrode tab portion provided in the negative electrode plate, and a negative electrode collector electrically connecting the negative electrode tab portion and the negative electrode terminal to each other, the method including welding a flange portion of the negative electrode terminal and the negative electrode collector together by projecting an energy ray, the negative electrode collector includes, before the welding, a rough surface portion, and in the welding, the flange portion of the negative electrode terminal and the negative electrode collector are connected by welding by projecting an energy ray onto the rough surface portion.
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7.发明授权公开(公告)号：US10026950B2
公开(公告)日：2018-07-17
申请号：US14969953
申请日：2015-12-15
Applicant: SANYO Electric Co., Ltd. , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Yoshinori Yokoyama , Naoya Tada , Yasuhiro Yamauchi , Toshihiro Takada , Hiroshi Inukai , Yasushi Tsuchida , Takashi Tokunaga , Akira Kiyama
Abstract: A prismatic secondary battery of one configuration has a current disconnection mechanism, and a distance from a first conductive member to a second conductive member along a surface of a first insulation member and passing an outer periphery of the first insulation member is greater than or equal to 2.4 mm. At least one of the first insulation member and a second insulation member is formed from a material having a weight reduction percentage of 100% in thermo gravimetric measurement under conditions of a measurement temperature of 25° C.-600° C., a temperature increase rate of 5° C.±0.5° C./min, a measurement atmosphere of inert gas flow, and an amount of measurement sample of 10 mg±5 mg.
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公开(公告)号：US20190088977A1
公开(公告)日：2019-03-21
申请号：US16134290
申请日：2018-09-18
Applicant: SANYO Electric Co., Ltd.
Inventor： Ryoichi Wakimoto , Naoya Tada
Abstract: A method for manufacturing a secondary battery includes welding a first negative-electrode current collector and a second negative-electrode current collector together by irradiation with an energy ray. The secondary battery includes an electrode assembly including a positive electrode plate and a negative electrode plate, a rectangular exterior body having an opening and containing the electrode assembly, a sealing plate that seals the opening in the rectangular exterior body, and a negative electrode terminal electrically connected to the negative electrode plate and attached to the sealing plate. The negative electrode plate is electrically connected to the negative electrode terminal by the first and second negative-electrode current collectors. At least one of the first and second negative-electrode current collectors is provided with a rough surface portion. The first and second negative-electrode current collectors are welded together by irradiating the rough surface portion with an energy ray.
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