公开(公告)号：US12132173B2

公开(公告)日：2024-10-29

申请号：US17282127

申请日：2019-10-01

Applicant: LG Chem, Ltd.

Inventor： Jung Il Park ,  Jee Ho Kim ,  Yong Tae Lee ,  Myung Hoon Ko ,  Ki Youn Kim ,  Gyung Soo Kang

IPC: H01M10/0587 ,  H01M10/04 ,  H01M50/107 ,  H01M50/536 ,  H01M50/538 ,  H01M50/10

CPC classification number: H01M10/0587 ,  H01M10/0431 ,  H01M50/107 ,  H01M50/536 ,  H01M50/538 ,  H01M50/10

Abstract: A secondary battery comprises an electrode assembly including a first electrode, a separator, and a second electrode alternately stacked and wound about a central axis. A first non-coating portion that is not coated with an electrode active material protrudes farther than the separator in a first direction along the central axis and a second non-coating portion that is not coated with the electrode active material protrudes farther than the separator in a second, opposite direction along the central axis. The first non-coating portion contacts a first connection part disposed on an end of a first can of the battery, and the second non-coating portion contacts a second connection part disposed on an end of a second can. At least one of the first connection part or the second connection part comprises a protrusion having a shape protruding towards the electrode assembly.

公开(公告)号：US20240347778A1

公开(公告)日：2024-10-17

申请号：US18757254

申请日：2024-06-27

Applicant: ZHUHAI COSMX BATTERY CO., LTD.

Inventor： Yan BAI ,  Hu Zou ,  Zhijia He ,  Jiayu Zhang ,  Xuwu Zhang ,  Ping Nie

IPC: H01M10/0587 ,  H01M4/13

CPC classification number: H01M10/0587 ,  H01M4/13

Abstract: Embodiments of the present disclosure relate to the technical field of batteries, and in particular to a battery cell and a battery. The battery cell is formed by winding a first electrode sheet and a second electrode sheet; the first electrode sheet and the second electrode sheet are separated by a separator; a head portion of the second electrode sheet is provided with an empty foil area which is not coated with an active substance; the empty foil area is provided with a first protection adhesive paper and second protection adhesive paper; the first protection adhesive paper and the second protection adhesive paper are located on two sides of an edge of a head portion of the first electrode sheet in a thickness direction of the battery cell.

公开(公告)号：US12113197B2

公开(公告)日：2024-10-08

申请号：US17289974

申请日：2019-10-23

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomohiro Harada

IPC: H01M4/131 ,  H01M4/02 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/469

CPC classification number: H01M4/131 ,  H01M4/386 ,  H01M4/505 ,  H01M4/525 ,  H01M4/621 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/469 ,  H01M2004/028

Abstract: A secondary battery including a positive electrode including a positive electrode active material capable of electrochemically absorbing and releasing lithium ions, a negative electrode including a negative electrode active material capable of electrochemically absorbing and releasing lithium ions, a separator interposed between the positive and negative electrodes, and a non-aqueous electrolyte. The positive electrode includes a positive electrode material mixture containing the positive electrode active material and a positive electrode additive. The positive electrode additive includes a compound represented by LiaFexMyOz, where 0≤a≤5, 0≤x≤5, 0≤y≤1, and 0≤z≤4, with at least two of a, x, y and z being more than 0, and M includes at least one kind selected from the group consisting of Mn, Zn, Al, Ga, Ge, Ti, Si, Sn, Ce, Y, Zr, S, and Na.

公开(公告)号：US12113185B2

公开(公告)日：2024-10-08

申请号：US18360165

申请日：2023-07-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Ryo Kanada ,  Kenji Takahashi ,  Mai Fujiwara

IPC: H01M10/48 ,  G01R31/382 ,  H01M4/133 ,  H01M4/134 ,  H01M10/0525 ,  H01M10/0587 ,  H01M10/44

CPC classification number: H01M10/48 ,  G01R31/382 ,  H01M4/133 ,  H01M4/134 ,  H01M10/0525 ,  H01M10/0587 ,  H01M10/44

Abstract: A diagnostic device for a secondary battery having a structure in which positive electrodes and negative electrodes are alternately arranged includes an electronic control unit. The electronic control unit is configured to acquire a first resistance value indicating a magnitude of electrical resistance of the secondary battery, compress at least a part of the secondary battery, acquire a second resistance value indicating a magnitude of electrical resistance of the secondary battery after the compression, determine, using the first and second resistance values, whether an amount of decrease in electrical resistance of the secondary battery by the compression is greater than a predetermined value, and determine whether an increase in resistance due to distortion of at least one of the positive electrodes and the negative electrodes occurs in the secondary battery using a result of the determination.

公开(公告)号：US20240322399A1

公开(公告)日：2024-09-26

申请号：US18272537

申请日：2022-01-19

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Geon-Woo MIN ,  Min-Ki JO ,  Do-Gyun KIM ,  Jae-Woong KIM ,  Kwang-Su HWANGBO ,  Jong-Sik PARK ,  Jae-Won LIM ,  Yu-Sung CHOE ,  Hak-Kyun KIM ,  Je-Jun LEE ,  Byoung-Gu LEE ,  Duk-Hyun RYU ,  Kwan-Hee LEE ,  Jae-Eun LEE ,  Hae-Jin LIM ,  Su-Ji CHOI ,  Bo-Hyun KANG ,  Ji-Min JUNG ,  Jin-Hak KONG ,  Soon-O LEE ,  Kyu-Hyun CHOI ,  Pil-Kyu PARK

IPC: H01M50/559 ,  H01M10/0587 ,  H01M50/107 ,  H01M50/167 ,  H01M50/179 ,  H01M50/184 ,  H01M50/186 ,  H01M50/531 ,  H01M50/562 ,  H01M50/566 ,  H01M50/567 ,  H01M50/586 ,  H01M50/59

CPC classification number: H01M50/559 ,  H01M10/0587 ,  H01M50/107 ,  H01M50/167 ,  H01M50/179 ,  H01M50/184 ,  H01M50/186 ,  H01M50/531 ,  H01M50/562 ,  H01M50/566 ,  H01M50/567 ,  H01M50/586 ,  H01M50/59 ,  H01M2220/20

Abstract: Disclosed is a fixing structure of an electrode terminal, and a battery, a battery pack and a vehicle including the same. The fixing structure of an electrode terminal includes a battery housing configured to be opened at one side and have a bottom at the other side in which a perforation hole is formed; an electrode terminal installed through the perforation hole not to contact an inner wall of the perforation hole; and a terminal gasket interposed between the electrode terminal and the perforation hole, and the electrode terminal includes a body portion inserted into the perforation hole; an outer flange portion configured to extend along an outer surface of the bottom of the battery housing from a first side of the body portion; an inner flange portion configured to extend toward an inner surface of the bottom of the battery housing from a second side of the body portion; and a flat portion provided to an inner side of the inner flange portion.

公开(公告)号：US20240322253A1

公开(公告)日：2024-09-26

申请号：US18415652

申请日：2024-01-18

Applicant: Prime Planet Energy & Solutions, Inc.

Inventor： Masahiro YOSHIOKA

IPC: H01M10/0569 ,  H01M4/02 ,  H01M4/13 ,  H01M10/0587

CPC classification number: H01M10/0569 ,  H01M4/13 ,  H01M10/0587 ,  H01M2004/027 ,  H01M2300/0042

Abstract: A power storage device includes an electrolytic solution, which includes ethylene carbonate, another solvent having a lower melting point than that of ethylene carbonate, and a supporting electrolyte containing P, a strip-shaped positive electrode plate, a strip-shaped negative electrode plate including a strip-shaped negative active material layer in which an SEI film is formed, and a strip-shaped separator. The power storage device further includes a wound electrode body in which the electrolytic solution is impregnated inside. The negative active material layer of the electrode body has a width of 180 mm or larger. A P amount contained in the SEI film formed in the negative active material layer is defined such that the center P amount in the center portion in the width direction is 90% to 105% of the end portion P amount on an end portion in the width direction of the negative active material layer.

公开(公告)号：US20240322217A1

公开(公告)日：2024-09-26

申请号：US18574244

申请日：2022-06-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yohei Uchiyama

IPC: H01M10/0525 ,  H01M4/02 ,  H01M4/66 ,  H01M10/0569 ,  H01M10/0587 ,  H01M50/46 ,  H01M50/489

CPC classification number: H01M10/0525 ,  H01M4/669 ,  H01M10/0569 ,  H01M10/0587 ,  H01M50/46 ,  H01M50/489 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2300/0028 ,  H01M2300/0034

Abstract: Disclosed is a lithium secondary battery (10) including a positive electrode (11) containing a positive electrode active material capable of absorbing and releasing lithium ions, a negative electrode (12) including a negative electrode current collector, a separator (13) disposed between the positive electrode (11) and the negative electrode (12), and a nonaqueous electrolyte having lithium ion conductivity. At the negative electrode, lithium metal deposits during charging, and the lithium metal dissolves during discharging. The negative electrode current collector includes an austenitic stainless steel.

公开(公告)号：US20240322213A1

公开(公告)日：2024-09-26

申请号：US18137483

申请日：2023-04-21

Applicant: Kye-Seol LEE

Inventor： Kye-Seol LEE

IPC: H01M10/04

CPC classification number: H01M10/0409 ,  H01M10/0587 ,  H01M50/461 ,  H01M2220/20

Abstract: A secondary battery electrode film and separator supply device configured to: replace a bobbin when an electrode separator is used up by automatically extracting an empty bobbin from a spool, mounting the empty bobbin on a side of a bobbin mount of a bobbin changer, changing the position of a new bobbin mounted on another side by rotating the bobbin mount 180 degrees, and then moving and mounting the new bobbin on the spool; automatically extracting an end of a wound electrode separator through vacuum suction and connecting the end to another electrode separator; and feed a replacing material roll to a moving spool, cut a finishing tap at an end of a material by a predetermined length, and then automatically connect a new separator end of the replacing material roll and an in-use separator end through taping.

公开(公告)号：US20240322125A1

公开(公告)日：2024-09-26

申请号：US18732136

申请日：2024-06-03

Applicant: Vehicle Energy Japan Inc.

Inventor： Hiroyuki TOSHIRO ,  Yasuo ARISHIMA

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/131 ,  H01M4/139 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0587

CPC classification number: H01M4/364 ,  H01M4/131 ,  H01M4/139 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/021 ,  H01M2004/028

Abstract: A lithium ion secondary battery with increased durability and capacity includes a positive electrode, a negative electrode, and a separator. The positive electrode includes a current collector foil and an electrode mixture layer disposed on a surface of the current collector foil. The positive electrode mixture layer includes a superficial layer portion and a deep layer portion. The superficial layer portion opposes the negative electrode via the separator. The deep layer portion is disposed between the superficial layer portion and the current collector foil. The superficial layer portion contains positive electrode active material particles having an average particle diameter larger than an average particle diameter of positive electrode active material particles contained in the deep layer portion. A space ratio between the positive electrode active material particles in the superficial layer portion is lower than a space ratio between the positive electrode active material particles in the deep layer portion.

公开(公告)号：US12095077B2

公开(公告)日：2024-09-17

申请号：US15324356

申请日：2015-06-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideyuki Saka ,  Keiichi Takahashi ,  Hideaki Fujita ,  Tatsuya Hashimoto

IPC: H01M4/36 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/0587

CPC classification number: H01M4/364 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/0587 ,  H01M10/0413 ,  H01M2220/20 ,  Y02E60/10

Abstract: A non-aqueous secondary battery includes a positive electrode composite material layer. In a cross-section in a direction of thickness of the positive electrode composite material layer, the positive electrode composite material layer includes a first region including one end portion in a direction intersecting with the direction of thickness, a second region including the other end portion, and a third region lying between the first region and the second region. The first region is composed of a first composite material containing lithium iron phosphate and lithium nickel cobalt manganese composite oxide, and the second region is composed of a second composite material containing lithium iron phosphate and lithium nickel cobalt manganese composite oxide. The third region is composed of a third composite material containing lithium nickel cobalt manganese composite oxide.