公开(公告)号：US11936061B2

公开(公告)日：2024-03-19

申请号：US17251237

申请日：2019-05-17

Applicant: SANYO Electric Co., Ltd.

Inventor： Takuya Egashira ,  Naotake Yoshida

IPC: H01M50/358 ,  H01M50/209 ,  H01M50/249 ,  H01M50/262 ,  H01M50/271 ,  H01M50/50 ,  H01M50/505 ,  B60L50/64

CPC classification number: H01M50/358 ,  H01M50/209 ,  H01M50/249 ,  H01M50/262 ,  H01M50/271 ,  H01M50/50 ,  H01M50/505 ,  B60L50/64

Abstract: Provided is power supply device configured for safe discharge to the outside of the power supply device even when gas at high temperature and under high pressure is discharged from a secondary battery cell, power supply device including: a plurality of secondary battery cells each having gas discharge valve for discharging internal gas; and cover part disposed on one surface of battery stack with the plurality of secondary battery cells stacked while covering gas discharge valve of each of the plurality of secondary battery cells. Cover part is provided inside with a gas guide path partitioned to discharge gas discharged from gas discharge valve to the outside of cover part, and the gas guide path includes one or more horizontal gas flow bending portions that bend at least a flow direction of some of the gas in plan view of cover part.

公开(公告)号：US11916209B2

公开(公告)日：2024-02-27

申请号：US17267326

申请日：2019-07-26

Applicant: SANYO Electric Co., Ltd.

Inventor： Nao Takeda ,  Naotake Yoshida ,  Kazuhiro Harazuka

IPC: H01M10/6555 ,  H01M10/613 ,  H01M10/647 ,  H01M10/658 ,  H01M50/209 ,  H01M50/227 ,  H01M50/289 ,  H01M50/291 ,  H01M50/264 ,  H01M10/6557

CPC classification number: H01M10/6555 ,  H01M10/613 ,  H01M10/647 ,  H01M10/658 ,  H01M10/6557 ,  H01M50/209 ,  H01M50/227 ,  H01M50/264 ,  H01M50/289 ,  H01M50/291

Abstract: The power supply device includes a plurality of battery cells each having a rectangular outer shape, a plurality of separators configured to insulate adjacent battery cells, and a restraining member assembling the plurality of battery cells and the plurality of separators. Each of separators includes interposed plate disposed between adjacent battery cells, heat insulating member having a sheet-like shape and disposed between interposed plate and adjacent battery cells, peripheral wall protruding from interposed plate toward adjacent battery cells and defining a housing space housing adjacent battery cells, and a plurality of ribs provided inside peripheral wall. The plurality of ribs holds heat insulating member.

公开(公告)号：US11563255B2

公开(公告)日：2023-01-24

申请号：US16954291

申请日：2018-11-15

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida

IPC: H01M50/291 ,  H01M10/0525 ,  H01M50/209 ,  H01M50/249 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6557 ,  H01M10/6566

Abstract: A power supply device includes a plurality of rectangular battery cells stacked in the thickness direction, and a plurality of separators interposed between adjacent battery cells. The separator includes an insulating separator frame that forms a defined space surrounded in a frame shape, and a separator core that is inserted into the defined space surrounded by the separator frame and is disposed between the adjacent battery cells.

公开(公告)号：US12218374B2

公开(公告)日：2025-02-04

申请号：US17439457

申请日：2019-12-19

Applicant: SANYO Electric Co., Ltd.

Inventor： Kazuhiro Harazuka ,  Naotake Yoshida ,  Nao Takeda

IPC: H01M50/291 ,  H01M10/647 ,  H01M10/658 ,  H01M50/209 ,  H01M50/24 ,  H01M50/289 ,  H01M50/293

Abstract: A power supply device according to an aspect of the present invention includes a plurality of battery cells having a flat right-angled parallelepiped shape and a plurality of separators insulating adjacent ones of the plurality of battery cells. Each of the plurality of separators includes heat insulating sheet arranged between adjacent one of the plurality of battery cells and an adjacent cell adjacent to the one of the plurality of battery cells among the plurality of battery cells, and insulating molded member holding heat insulating sheet. Insulating molded member includes lower wall covering lower surfaces of one of the plurality of battery cells and an adjacent cell adjacent to the one of the plurality of battery cells among the plurality of battery cells, and holder holding insulating sheet with a gap disposed between lower wall and insulating sheet.

公开(公告)号：US12191521B2

公开(公告)日：2025-01-07

申请号：US17414749

申请日：2019-09-27

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Nao Takeda ,  Kazuhiro Harazuka

IPC: H01M50/44 ,  H01M10/647 ,  H01M10/658 ,  H01M50/209 ,  H01M50/249 ,  H01M50/291 ,  H01M50/293 ,  H01M50/414

Abstract: To achieve both formability and heat insulating properties, separator according to an aspect of the present invention insulates adjacent battery cells. Separator includes heat insulation sheet including a fiber material and a heat insulation material including higher heat insulating properties than the fiber material, and formed member including higher shape stability than the heat insulation sheet. This enables shape of heat insulation sheet including high flexibility to be maintained using formed member formed into a predetermined shape.

公开(公告)号：US11515607B2

公开(公告)日：2022-11-29

申请号：US16964051

申请日：2018-11-15

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Kazuhiro Harazuka ,  Nobuo Iwatsuki ,  Shinji Ota

IPC: H01M50/578 ,  H01M50/502 ,  H01M50/20

Abstract: There is provided a battery system including parallel-connected bus bars each connecting the plurality of prismatic battery cells in parallel, and a safety mechanism configured to be capable of interrupting a current path of prismatic battery cells connected in parallel by the parallel-connected bus bars, where the sealing plate of one of the prismatic battery cells convexly deforms due to a rise in an internal pressure of this prismatic battery cell when an abnormality occurs, the sealing plate that has convexly deformed comes into contact with the parallel-connected bus bars to form external short circuitry between the electrode terminals that are positive and negative of one prismatic battery cell connected in parallel to the prismatic battery cell with the abnormality, and external short circuitry activates the safety mechanism that interrupts a current flowing into the prismatic battery cell with the abnormality.

公开(公告)号：US20190305287A1

公开(公告)日：2019-10-03

申请号：US16267764

申请日：2019-02-05

Applicant: SANYO Electric Co., Ltd.

Inventor： Yu Matsui ,  Takashi Hosokawa ,  Kyohei Kobayashi ,  Naotake Yoshida

IPC: H01M2/34 ,  H01M2/12 ,  H01M2/20

Abstract: A battery pack includes a battery unit including rectangular secondary batteries, each including a sealing plate and positive and negative electrode terminals attached to the sealing plate; a bus bar that connects the rectangular secondary batteries together in parallel; an insulating plate disposed between the sealing plates of the rectangular secondary batteries and the bus bar; and a short-circuit breaking portion that interrupts an electric conduction path between the rectangular secondary batteries connected in parallel by allowing each sealing plate to bulge outward in response to an internal pressure rise of the battery to push up the insulating plate and the bus bar. A portion of each sealing plate that bulges most protrudes outward by greater than or equal to 1.5 mm from an outer peripheral edge of the sealing plate when a pressure in the corresponding rectangular secondary battery reaches the operating pressure of a gas release valve.

公开(公告)号：US12068499B2

公开(公告)日：2024-08-20

申请号：US17436626

申请日：2019-12-26

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Takuya Egashira ,  Yusuke Fujii ,  Nao Takeda ,  Takuya Unehara

IPC: H01M50/367 ,  H01M10/613 ,  H01M10/653 ,  H01M50/209 ,  H01M50/271 ,  H01M50/264 ,  H01M50/293

CPC classification number: H01M50/367 ,  H01M10/613 ,  H01M10/653 ,  H01M50/209 ,  H01M50/271 ,  H01M50/264 ,  H01M50/293 ,  H01M2220/20

Abstract: Battery module includes: battery stack including a plurality of batteries that are stacked, each of the plurality of batteries having valve portion; duct plate configured to cover a first surface of battery stack on which a plurality of valve portions are disposed, duct plate having gas discharge duct that temporarily stores a gas blown off from valve portions of respective batteries; cover plate placed on duct plate; flow path portion defined by duct plate and cover plate, flow path portion being connected to gas discharge duct through opening, flow path portion extending in a first direction that intersects with stacking direction of the batteries, flow path portion allowing leaking of the gas in gas discharge duct to an outside of battery module; and gas restricting wall portion disposed in gas discharge duct between valve portion and opening.

公开(公告)号：US11511648B2

公开(公告)日：2022-11-29

申请号：US16962610

申请日：2018-11-15

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Takahide Takeda

IPC: B60K1/00 ,  B60L58/26 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6554 ,  H01M10/6556 ,  H01M10/6568 ,  B60L50/64 ,  H01M50/20

Abstract: A coolant passage, which is included in a cooling plate thermally coupled to a plurality of battery cells and includes longitudinal coolant passages connected to an inlet side and an outlet side for a coolant and lateral coolant passages connecting the longitudinal coolant passages in parallel with each other, cools the battery cells by allowing the coolant to flow in both the longitudinal coolant passages and the lateral coolant passages via the cooling plate.

公开(公告)号：US11450923B2

公开(公告)日：2022-09-20

申请号：US16962090

申请日：2018-11-15

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Kazuhiro Harazuka ,  Nobuo Iwatsuki ,  Shinji Ota

IPC: H01M50/502 ,  H01M50/572 ,  H01M50/446 ,  H01M50/20

Abstract: A short circuit current interruption method of a battery system including: stacking a plurality of prismatic battery cells and connecting the plurality of prismatic battery cells with a parallel connection bus bar in parallel to form a battery block, wherein a sealing plate of the prismatic battery cell is a plate material having flexibility that deforms when an internal pressure rises due to an internal short circuit, and when a rise in the internal pressure due to the internal short circuit of the prismatic battery cell causes deformation, the deformation of the sealing plate is detected, and when an amount of deformation exceeds a setting value, the short circuit current of the battery connected in parallel with the internally short circuited battery is interrupted.