公开(公告)号：US20190280303A1

公开(公告)日：2019-09-12

申请号：US16296531

申请日：2019-03-08

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Takuya ASARI ,  Akihiro OCHIAI ,  Yusuke FUKUMOTO ,  Naoyuki WADA

IPC: H01M4/66 ,  H01M4/70 ,  H01M10/0525 ,  H01M4/131 ,  H01M2/26 ,  H01M10/0587

Abstract: A positive electrode includes at least a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is formed on a surface of the positive electrode current collector. The positive electrode current collector includes an aluminum foil and a porous film. The porous film covers a surface of the aluminum foil. The porous film contains at least aluminum oxide. The porous film has a thickness not smaller than 10 nm and not greater than 800 nm. The porous film has a dynamic hardness not lower than 5 and not higher than 200.

公开(公告)号：US20180301708A1

公开(公告)日：2018-10-18

申请号：US15941503

申请日：2018-03-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Harunari SHIMAMURA ,  Yusuke FUKUMOTO ,  Akihiro OCHIAI

IPC: H01M4/66 ,  H01M10/0525

Abstract: A nonaqueous battery includes a current collector that supports an electrode active material. The current collector includes a first layer, a second layer and a third layer. The second layer is interposed between the first layer and the third layer. The second layer includes 0.3 mass % or more and 1 mass % or less of magnesium and 0.2 mass % or more and 0.9 mass % or less of silicon, with a remainder being made up of aluminum. The first layer and the third layer constitute outer surfaces of the current collector. The first layer and the third layer each include 99.3 mass % or more of aluminum. In both of the first layer and the third layer, there is less than 0.3 mass % of magnesium and less than 0.2 mass % of silicon.

公开(公告)号：US20170179465A1

公开(公告)日：2017-06-22

申请号：US15324186

申请日：2015-06-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Naohiro HASAMA ,  Ryo NAKATANI

IPC: H01M4/04 ,  H01M10/0525 ,  H01M4/139

CPC classification number: H01M4/0404 ,  B05C11/1005 ,  B05C19/00 ,  B05C19/008 ,  B05C19/04 ,  B05D1/12 ,  B05D1/40 ,  B05D3/12 ,  B05D5/12 ,  H01M4/0435 ,  H01M4/139 ,  H01M10/0525

Abstract: A method of manufacturing a lithium-ion secondary battery electrode sheet disclosed herein includes the step of preparing powder 220 of granulated particles. In this step, the powder (220) of granulated particles (240) including active material particles (241) and a hinder (242) is prepared. The powder (220) is deposited on a strip-shaped collector foil (201) that is being conveyed. Then, the powder (220) is removed from widthwise center portions (202) and (203) of the collector foil (201), and a squeegee (106) is brought into contact with the powder (220) remaining on the opposite sides of the center portions (202) and (203) of the collector foil (201), thus adjusting the thickness of the powder (220). Subsequently, the powder (220) remaining on the opposite sides of the center portions (202) and (203) of the collector foil (201) is pressed.

公开(公告)号：US20180315985A1

公开(公告)日：2018-11-01

申请号：US15963658

申请日：2018-04-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Akihiro OCHIAI ,  Yusuke FUKUMOTO ,  Harunari SHIMAMURA

IPC: H01M2/34 ,  H01M10/0525 ,  H01M10/054 ,  H01M4/13

CPC classification number: H01M4/0404 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/139 ,  H01M4/1391 ,  H01M4/1393 ,  H01M4/667 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/4235

Abstract: A nonaqueous battery includes a positive electrode and a negative electrode. At least one of the positive electrode and the negative electrode includes a current collector, an intermediate layer, and an active material layer. The intermediate layer is interposed between the current collector and the active material layer and includes graphite particles and insulating particles. In a cross section of the intermediate layer in a thickness direction, a major axis diameter of the graphite particles is equal to or greater than the thickness of the intermediate layer. In X-ray diffraction measurement of the intermediate layer by an out-of-plane method, a ratio of an intensity of an 110 diffraction line of a graphite crystal to an intensity of a 002 diffraction line of the graphite crystal is 0.0011 or more.

公开(公告)号：US20180294457A1

公开(公告)日：2018-10-11

申请号：US15941111

申请日：2018-03-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Yusuke FUKUMOTO ,  Harunari SHIMAMURA ,  Akihiro OCHIAI

IPC: H01M2/16 ,  H01M10/0525 ,  H01M10/0585

Abstract: A battery includes an electrode plate group. The electrode plate group includes electrode plates and a separator. The electrode plate group is obtained by laminating a plurality of electrode plates. The separator is disposed between the electrode plates. A surface of at least one of the electrode plates is a particle layer. A surface of the separator is a nonwoven fabric layer. The particle layer includes fibrous particles. The particle layer and the nonwoven fabric layer are in contact with each other.

公开(公告)号：US20190115598A1

公开(公告)日：2019-04-18

申请号：US16120507

申请日：2018-09-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Akihiro OCHIAI ,  Yusuke FUKUMOTO ,  Harunari SHIMAMURA

IPC: H01M4/62 ,  H01M10/42

CPC classification number: H01M4/628 ,  H01M10/05 ,  H01M10/4235 ,  H01M2004/028

Abstract: A positive electrode plate includes a positive electrode composite material layer. The positive electrode composite material layer contains at least a positive electrode active material and a flame retardant. The flame retardant contains phosphorus (P) or sulfur (S). The flame retardant has a thermal decomposition temperature not lower than 80° C. and not higher than 210° C. A value calculated by dividing a porosity (%) of the positive electrode composite material layer by an amount (mass %) of P and S contained in the positive electrode composite material layer is not smaller than 5 and not greater than 5000.

公开(公告)号：US20190115581A1

公开(公告)日：2019-04-18

申请号：US16135148

申请日：2018-09-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Harunari SHIMAMURA ,  Yusuke FUKUMOTO ,  Akihiro OCHIAI

IPC: H01M2/16

Abstract: A separator is for a non-aqueous electrolyte secondary battery. The separator includes at least a porous film. The porous film contains a resin composition. The resin composition contains a thermoplastic resin and metal hydroxide particles.

公开(公告)号：US20180076450A1

公开(公告)日：2018-03-15

申请号：US15676416

申请日：2017-08-14

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Tatsuya HASHIMOTO ,  Keiichi TAKAHASHI ,  Akihiro TANIGUCHI ,  Shuji TSUTSUMI ,  Yusuke FUKUMOTO ,  Yuji YOKOYAMA

IPC: H01M4/36 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/131

CPC classification number: H01M4/364 ,  C01G45/1228 ,  C01G51/50 ,  C01G53/50 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  Y02T10/7011

Abstract: A method of manufacturing a non-aqueous electrolyte solution secondary battery includes: (A) preparing a first composite material by mixing a first positive electrode active material, a first conductive material and a first binder; (B) preparing a second composite material by mixing a second positive electrode active material, a second conductive material and a second binder; and (C) manufacturing a positive electrode by forming a positive electrode composite layer including the first composite material and the second composite material. The first positive electrode active material has an average discharge potential lower than that of the second positive electrode active material. The first conductive material has a first OAN. The second conductive material has a second OAN. A ratio of the second OAN to the first OAN is 1.3 or more and 2.1 or less. A sum of the first OAN and the second OAN is 31.64 ml/100 g or less.

公开(公告)号：US20220302460A1

公开(公告)日：2022-09-22

申请号：US17831678

申请日：2022-06-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Takuya ASARI ,  Akihiro OCHIAI ,  Yusuke FUKUMOTO ,  Naoyuki WADA

IPC: H01M4/66 ,  H01M4/70 ,  H01M10/0525 ,  H01M10/0587 ,  H01M4/131 ,  H01M50/531

Abstract: A positive electrode includes at least a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is formed on a surface of the positive electrode current collector. The positive electrode current collector includes an aluminum foil and a porous film. The porous film covers a surface of the aluminum foil. The porous film contains at least aluminum oxide. The porous film has a thickness not smaller than 10 nm and not greater than 800 nm. The porous film has a dynamic hardness not lower than 5 and not higher than 200.

公开(公告)号：US20190123357A1

公开(公告)日：2019-04-25

申请号：US16139129

申请日：2018-09-24

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Koji TORITA ,  Shuji TSUTSUMI ,  Yusuke FUKUMOTO

IPC: H01M4/62 ,  H01M10/0525

Abstract: A positive electrode for a non-aqueous electrolyte secondary battery includes a positive electrode current collector, a protective layer provided on a surface of the positive electrode current collector, and a positive electrode composite material layer containing a positive electrode active material provided on a surface of the protective layer. The protective layer includes an insulating filler, a binder, and a conductive material. The protective layer is composed of a central portion and an end portion in a plan view as seen from the stacking direction. The ratio of the conductive material in the end portion of the protective layer is smaller than the ratio of the conductive material in the central portion of the protective layer. The ratio Sc/S of the area Sc of the end portion of the protective layer to the total area S of the protective layer in plan view is 0.12 or more.