公开(公告)号：US20230044238A1

公开(公告)日：2023-02-09

申请号：US17960150

申请日：2022-10-05

Applicant: SoftBank Corp.

Inventor： Takaya SAITO ,  Yoshiki TAKAYANAGI ,  Koji NISHIYAMA

IPC: B64D27/24 ,  B60L50/60 ,  B60L53/51 ,  H02J7/00 ,  H02J7/35 ,  H02J3/38 ,  H02S10/20 ,  H01M10/46 ,  H01M10/48 ,  H01M10/44

Abstract: Provided is a system including: a management unit configured to manage a plurality of battery packs connected in parallel, in which the management unit is configured to control the plurality of battery packs to cause the plurality of battery packs to be discharged alternately so that a discharge rate of each of the plurality of battery packs becomes higher than the discharge rate in a case of discharging all of the plurality of battery packs. The plurality of battery packs include a plurality of left-hand side battery packs and a plurality of right-hand side battery packs, and the management unit is configured to manage the plurality of battery packs to cause at least one of the plurality of battery packs in each of the plurality of left-hand side battery packs and the plurality of right-hand side battery packs to be discharged at a time in order.

公开(公告)号：US20240199217A1

公开(公告)日：2024-06-20

申请号：US18595428

申请日：2024-03-05

Applicant: SoftBank Corp.

Inventor： Takaya SAITO ,  Yoshiki TAKAYANAGI ,  Shuntaro MIYAKAWA

IPC: B64D27/40 ,  B64D27/353 ,  B64D31/06

CPC classification number: B64D27/40 ,  B64D27/353 ,  B64D31/06

Abstract: Provided is a system comprising: a management unit that manages a plurality of battery packs, which are connected in parallel to a bus to which a power generation unit and a load are connected, to have the plurality of battery packs being alternately discharged so that a voltage difference between a battery pack with a highest voltage and a battery pack with a lowest voltage among the plurality of battery packs is not greater than a voltage threshold.

公开(公告)号：US20230231117A1

公开(公告)日：2023-07-20

申请号：US18191888

申请日：2023-03-29

Applicant: SoftBank Corp. ,  Enpower Japan Corp.

Inventor： Yoshiki TAKAYANAGI ,  Takaya SAITO ,  Shuntaro MIYAKAWA ,  Yong CHE ,  Tsutomu TAKAHASHI ,  Fandong MENG

IPC: H01M4/36 ,  H01M4/40 ,  H01M4/04 ,  H01M10/0569 ,  H01M10/44 ,  H01M4/58

CPC classification number: H01M4/366 ,  H01M4/405 ,  H01M4/0404 ,  H01M10/0569 ,  H01M10/446 ,  H01M4/58 ,  H01M2004/027

Abstract: A negative electrode material that is used for a negative electrode of a lithium secondary battery containing a non-aqueous electrolyte solution, includes: a first layer that contains lithium metal as a negative electrode active material; and a second layer that is arranged on at least one surface of the first layer. The second layer consists of a compound represented by a general formula MxAy (M is an element selected from a group consisting of Al, In, Mg, Ag, Si, and Sn, and A is an element selected from a group consisting of O, N, P, and F, and 0.3

公开(公告)号：US20250062390A1

公开(公告)日：2025-02-20

申请号：US18938284

申请日：2024-11-06

Applicant: SoftBank Corp.

Inventor： Shuntaro MIYAKAWA ,  Takaya SAITO ,  Yoshiki TAKAYANAGI

IPC: H01M10/04 ,  H01M4/02 ,  H01M50/414 ,  H01M50/536

Abstract: A stack including a plurality of stacked sheet materials is provided. Each of the plurality of sheet materials has a support layer including a resin material and a first metal layer and a second metal layer formed on both faces of the support layer. In a part of the plurality of sheet materials, the plurality of first metal layers and the plurality of second metal layers included in the plurality of sheet materials are integrated.

公开(公告)号：US20240128465A1

公开(公告)日：2024-04-18

申请号：US18540870

申请日：2023-12-15

Applicant: SoftBank Corp.

Inventor： Takaya SAITO ,  Yoshiki TAKAYANAGI ,  Shuntaro MIYAKAWA

IPC: H01M4/66 ,  H01M50/54

CPC classification number: H01M4/667 ,  H01M50/54

Abstract: A manufacturing method of a multilayer collector is provided, comprising preparing a resin layer, and a laminate in which collectors including a first metal layer and a second metal layer arranged on both sides of the resin layer are laminated, arranging a tab on one of an upper surface side and a lower surface side of the laminate, and a Sub-tab on another, performing heat compression on a portion to be welded of the tab, the laminate, and the Sub-tab in a laminating direction, to elute resin of the resin layer in the portion to be welded, and performing resistance welding on the portion to be welded.

公开(公告)号：US20230238534A1

公开(公告)日：2023-07-27

申请号：US18192676

申请日：2023-03-30

Applicant: SoftBank Corp. ,  National Institute of Advanced Industrial Science and Technology

Inventor： Takaya SAITO ,  Koji NISHIYAMA ,  Yoshiki TAKAYANAGI ,  Shuntaro MIYAKAWA ,  Masaru YAO ,  Minami KATO ,  Hisanori ANDO ,  Nobuhiko TAKEICHI

IPC: H01M4/60

CPC classification number: H01M4/608 ,  H01M2004/028

Abstract: An active material used in a secondary battery includes a heterocyclic chemical compound including one or more pyrazine rings and two or more benzene rings, or a salt or derivative thereof. The heterocyclic chemical compound is preferably a chemical compound in which at least 4 oxygen atoms are bonded to the benzene ring. The active material used in the secondary battery may also include phenazine or a salt or derivative thereof. The phenazines are preferably chemical compounds in which at least 4 oxygen atoms are bonded to a benzene ring included in a phenazine structure.