公开(公告)号：US20200343508A1

公开(公告)日：2020-10-29

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: H01M2/16 ,  H01M2/34 ,  H01M2/20 ,  H01M2/10

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.

公开(公告)号：US11757144B2

公开(公告)日：2023-09-12

申请号：US17040304

申请日：2018-11-16

Applicant: SANYO Electric Co., Ltd.

Inventor： Masakazu Naito ,  Naotake Yoshida

IPC: H01M10/658 ,  H01M10/10 ,  H01M10/625 ,  H01M10/647 ,  H01M10/653 ,  H01M50/249 ,  H01M50/209 ,  H01M50/293

CPC classification number: H01M10/625 ,  H01M10/647 ,  H01M10/653 ,  H01M10/658 ,  H01M50/209 ,  H01M50/249 ,  H01M50/293 ,  H01M2220/20

Abstract: A plurality of battery cells each having a prismatic shape, a fixing member that fixes the plurality of battery cells in a stacked state, and a thermal insulation sheet that is sandwiched between stacking surfaces of battery cells and thermally insulates the adjacent battery cells, wherein thermal insulation sheet is an inorganic fiber sheet in which inorganic fibers are aggregated in a three-dimensionally non-directional manner and fine voids are provided between the inorganic fibers.

公开(公告)号：US11677124B2

公开(公告)日：2023-06-13

申请号：US17255971

申请日：2019-05-17

Applicant: SANYO Electric Co., Ltd.

Inventor： Takuya Egashira ,  Naotake Yoshida ,  Daisuke Yamane

IPC: H01M50/578 ,  H01M50/249 ,  H01M50/209 ,  H01M50/183 ,  H01M50/317 ,  H01M50/147 ,  H01M50/512 ,  H01M10/46 ,  H01M50/50 ,  H01M50/588 ,  B60L50/64 ,  H01M50/593

CPC classification number: H01M50/578 ,  B60L50/64 ,  H01M10/46 ,  H01M50/147 ,  H01M50/183 ,  H01M50/209 ,  H01M50/249 ,  H01M50/317 ,  H01M50/50 ,  H01M50/512 ,  H01M50/588 ,  H01M50/593 ,  H01M2200/20

Abstract: A battery system includes a battery block having a plurality of square battery cells (1) stacked in one direction, parallel connection bus bars (5X), insulating plate (7), and lid plate (8) fixed to insulating plate (7). Each square battery cell (1) has a discharge port provided with discharge valve (14) and a sealing plate provided with positive and negative electrode terminals via an insulating material. Parallel connection bus bars (5X) are connected to the electrode terminals to connect some or all of square battery cells (1) in parallel. Insulating plate (7) is disposed on the surfaces of sealing plates of the plurality of square battery cells (1) and includes passing portions having openings provided at positions corresponding to the discharge ports to pass the exhaust gas ejected from the discharge ports and pressing portions (22) disposed between parallel-connection bus bars (5X) and the sealing plates. Lid plate (8) faces discharge ports facing the openings of the passing portions.

公开(公告)号：US11476541B2

公开(公告)日：2022-10-18

申请号：US16609003

申请日：2018-04-24

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Takahide Takeda

IPC: H01M50/44 ,  H01M10/658 ,  H01M10/44 ,  H01M50/431 ,  H01M50/20

Abstract: A power supply device includes secondary battery cells disposed adjacent to each other and a separator that is interposed between the secondary battery cells adjacent to each other. The separator is made of a flexible material that has both a heat insulating property and restoring force such that the separator deforms when being pressed by each of the secondary battery cells and recovers an original shape of the separator. This configuration provides an improved heat insulating property between the secondary battery cells and prevents thermal propagation caused by thermal runaway. At the same time, this allows the separator to adapt to deformation of a secondary battery cell that has thermally swelled. In response to contraction of the swelled battery, the separator recovers its original shape to maintain a mechanical pressing force. This allows the power supply device to provide increased mechanical stability and maintain resistance to vibration and impact.

公开(公告)号：US11145943B2

公开(公告)日：2021-10-12

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 ,  H01M50/578 ,  H01M50/317 ,  H01M50/502

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：US12095063B2

公开(公告)日：2024-09-17

申请号：US17256180

申请日：2019-07-08

Applicant: SANYO Electric Co., Ltd.

Inventor： Naotake Yoshida ,  Tomoaki Ito ,  Takuya Egashira

IPC: H01M10/625 ,  B60L50/64 ,  H01M10/44 ,  H01M10/613 ,  H01M10/647 ,  H01M10/6554 ,  H01M10/6568 ,  H01M10/658 ,  H01M50/209 ,  H01M50/24 ,  H01M50/249 ,  B60K1/00 ,  B60K1/04 ,  B60K6/28 ,  B60L58/26 ,  H02J7/00

CPC classification number: H01M10/6554 ,  B60L50/64 ,  H01M10/441 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6568 ,  H01M10/658 ,  H01M50/209 ,  H01M50/24 ,  H01M50/249 ,  B60K2001/005 ,  B60K1/04 ,  B60K6/28 ,  B60L58/26 ,  B60Y2200/91 ,  B60Y2200/92 ,  B60Y2306/05 ,  B60Y2400/112 ,  H01M2220/20 ,  H02J7/007

Abstract: A battery system incudes battery stack formed by stacking a plurality of battery cells and cooling plate thermally coupled to battery cell of battery stack. Heat insulating material is disposed between battery cells of battery stack, which are adjacent to each other, and heat insulating material insulates heat between battery cells adjacent to each other. In addition, cooling plate cools battery cell, is used in combination with an endothermic material having heat capacity to absorb thermal runaway energy of battery cell, and prevents induction of thermal runaway.

公开(公告)号：US12087963B2

公开(公告)日：2024-09-10

申请号：US17436679

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 ,  H01M50/209 ,  H01M50/271 ,  H01M50/264 ,  H01M50/293

CPC classification number: H01M50/367 ,  H01M50/209 ,  H01M50/271 ,  H01M50/264 ,  H01M50/293

Abstract: The 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 surface of battery stack on which the plurality of valve portions are disposed, duct plate having gas discharge duct that is connected to valve portions of the respective batteries, and temporarily stores a blown-off gas; cover plate placed on duct plate; and flow path portion defined by duct plate and cover plate, flow path portion extending from gas discharge duct in a first direction that intersects with stacking direction and allowing leaking of the gas in gas discharge duct to an outside of battery module. Cover plate has opening through which a midst portion of flow path portion is communicable with the outside of the battery module.

公开(公告)号：US12040467B2

公开(公告)日：2024-07-16

申请号：US17266682

申请日：2019-07-26

Applicant: SANYO Electric Co., Ltd.

Inventor： Nao Takeda ,  Naotake Yoshida ,  Kazuhiro Harazuka

IPC: H01M10/613 ,  H01M10/647 ,  H01M10/6555 ,  H01M10/658 ,  H01M50/204 ,  H01M50/209 ,  H01M50/227 ,  H01M50/293

CPC classification number: H01M10/6555 ,  H01M10/613 ,  H01M10/647 ,  H01M10/658 ,  H01M50/204 ,  H01M50/209 ,  H01M50/227 ,  H01M50/293

Abstract: The power supply device includes a plurality of battery cells each having a square outer shape, a plurality of separators for insulating the adjacent battery cells, and a restraining member that assembles the plurality of battery cells and the plurality of separators. Each of separators has heat insulating properties. Further, each of separators is disposed between the plurality of battery cells. Further, each of separators includes contact portion that comes into contact with adjacent battery cell, and thin portion formed thinner than contact portion.

公开(公告)号：US20210143508A1

公开(公告)日：2021-05-13

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：US20210091428A1

公开(公告)日：2021-03-25

申请号：US17040304

申请日：2018-11-16

Applicant: SANYO Electric Co., Ltd.

Inventor： Masakazu Naito ,  Naotake Yoshida

IPC: H01M10/658 ,  H01M2/10 ,  H01M10/625 ,  H01M10/647 ,  H01M10/653

Abstract: A plurality of battery cells each having a prismatic shape, a fixing member that fixes the plurality of battery cells in a stacked state, and a thermal insulation sheet that is sandwiched between stacking surfaces of battery cells and thermally insulates the adjacent battery cells, wherein thermal insulation sheet is an inorganic fiber sheet in which inorganic fibers are aggregated in a three-dimensionally non-directional manner and fine voids are provided between the inorganic fibers.