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公开(公告)号：US09761917B2
公开(公告)日：2017-09-12
申请号：US14895208
申请日：2014-09-26
Inventor： Yoshihiro Shiotsu , Hiroshi Takasaki , Keisuke Shimizu
IPC: H01M10/613 , H01M2/10 , H01M2/12 , H01M10/0525
CPC classification number: H01M10/613 , H01M2/1077 , H01M2/1252 , H01M2/1264 , H01M10/0525
Abstract: A battery unit includes the following elements: a battery module that includes a plurality of battery cells and a gas discharge opening for discharging gas jetted from each of the battery cells; and a gas discharge duct in communication with the gas discharge opening and discharging the gas to the outside of the battery module. The gas discharge duct includes at least one duct outlet of which cross-sectional area of the channel in the duct outlet or the sum of cross-sectional areas of the channel in the respective duct outlets is larger than a cross-sectional area of the channel on the upstream side in the flow direction of the gas. The gas discharge duct also includes a temperature reducing member that is fixed to the periphery of the duct outlet so as to block part of the channel and reduces the temperature of the gas going through gaps.
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公开(公告)号：US11811039B2
公开(公告)日：2023-11-07
申请号：US16640345
申请日：2019-01-22
Inventor： Chifumi Murayama , Shinya Motokawa , Keisuke Shimizu
IPC: H01M10/647 , H01M50/209 , H01M10/6555 , H01M50/227 , H01M50/233
CPC classification number: H01M10/6555 , H01M10/647 , H01M50/209 , H01M50/227 , H01M50/233
Abstract: A battery pack includes a battery stack having a plurality of prismatic batteries being stacked. The battery pack further includes a cooling plate extending in a stack direction of the prismatic batteries in the battery stack. The cooling plate includes a plurality of coolant passages and a plurality of grooves. The coolant passages extend in a perpendicular direction substantially perpendicular to the stack direction of the prismatic batteries, and allow a coolant to flow in the coolant passages. The grooves constitute heat conduction inhibitors configured to inhibit heat conduction in the stack direction of the prismatic batteries.
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公开(公告)号：US11355800B2
公开(公告)日：2022-06-07
申请号：US16640342
申请日：2019-01-15
Inventor： Keisuke Shimizu , Shinya Motokawa , Chifumi Murayama
IPC: H01M10/658 , H01M10/613 , H01M10/647 , H01M10/6555 , H01M50/209 , H01M10/6561 , H01M10/6557 , H01M10/6567
Abstract: A battery pack includes first and second battery modules arranged in a first direction. In the first battery module, a first heat transfer part and a first heat insulator are disposed between battery cells adjacent in a second direction orthogonal to the first direction. In the second battery module, a second heat transfer part and a second heat insulator are disposed between battery cells adjacent in the second direction. The first heat transfer part constitutes a part of a heat transfer component that is put across and connected to both the first and the second battery modules. The first heat transfer part is connected to one of the battery cells in the first battery module so as to enable heat transfer. The second heat transfer part constitutes another part of the heat transfer component and is connected to one of the battery cells in the second battery module.
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公开(公告)号：US10693112B2
公开(公告)日：2020-06-23
申请号：US15743454
申请日：2016-12-20
Inventor： Takeshi Enomoto , Keisuke Shimizu
IPC: H01M2/10 , H01M10/653 , H01M10/643 , H01M10/658 , H01M10/617 , H01M10/0525 , H01M2/20 , H01M2/08 , H01M6/44
Abstract: A battery module includes: cells; and a battery holder made of a resin material that contains a filler in a resin matrix. In the resin material of the battery holder, the lower limit of the content of the filler is determined on the basis of the endothermic amount, and the upper limit of the content of the filler is determined on the basis of the viscosity. Another battery module includes: cylindrical cells; and a battery holder having a plurality of tubular first accommodation portions each having a substantially hexagonal hole and a plurality of tubular second accommodation portions each having a substantially polygonal (heptagonal or more) hole. In the battery holder, the first accommodation portions and second accommodation portions are arranged in a manner of log pile by sandwiching a first column including the first accommodation portions between second columns including the second accommodation portions.
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公开(公告)号：US10511002B2
公开(公告)日：2019-12-17
申请号：US15501980
申请日：2016-02-17
Inventor： Keisuke Shimizu , Daisuke Kishii , Takeshi Enomoto
Abstract: A battery module includes: a case body for storing a plurality of cells each having an exhaust gas valve; an exhaust passage for releasing, to the outside of the case body, the high-pressure and high-temperature exhaust gas having come from the cells; and a flow route changing unit that is disposed in the exhaust passage, has a hole for passing the exhaust gas, and elongates the flow route of the exhaust gas from the upstream side to the downstream side of the exhaust passage by changing the flow direction of the exhaust gas a plurality of times in a zigzag manner along at least one of the width and height directions of the exhaust passage. The flow route changing unit includes a plurality of flat plates each having a hole for passing the exhaust gas.
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Patent Agency Ranking
公开(公告)号：US12087962B2
公开(公告)日：2024-09-10
申请号：US17296393
申请日：2019-11-08
Inventor： Keisuke Shimizu , Takeshi Nagao , Goro Fujita
IPC: H01M50/342 , B60L3/00 , B60L58/26 , B60Q9/00 , H01M10/48 , H01M10/613 , H01M10/625 , H01M10/633 , H01M10/6552 , H01M10/6563 , H01M10/6568 , H01M10/663
CPC classification number: H01M50/342 , B60L3/0046 , B60L58/26 , B60Q9/00 , H01M10/48 , H01M10/613 , H01M10/625 , H01M10/633 , H01M10/6552 , H01M10/6563 , H01M10/6568 , H01M10/663 , H01M2220/20
Abstract: Battery pack (10) having a substantially sealed structure includes a plurality of cells (11-16) each having an opened portion provided in order to discharge an internal gas when an internal pressure rises. Non-resettable pressure switch (30, 31) that is connected to controller (50) by a signal line. The pressure switch changes irreversibly from a significant state to a non-significant state when a pressure in battery pack (10) is greater than a predetermined pressure threshold value.
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公开(公告)号：US11532860B2
公开(公告)日：2022-12-20
申请号：US17158647
申请日：2021-01-26
Inventor： Shinya Motokawa , Daisuke Kishii , Keisuke Shimizu , Akira Takano
IPC: H01M50/578 , H01M50/20 , H01M50/30 , H01M50/50 , H01M50/502 , H01M50/572 , H01M50/342
Abstract: A cell module includes a plurality of battery cells each having a safety valve at a first end in a height direction, a first current collector plate including a main body having a through hole that at least partly overlaps the safety valve when viewed along the height direction and a lead extending into the through hole from the main body and being electrically connected to a first terminal of each of the battery cells, an exhaust duct disposed over a surface of the first current collector plate remote from the battery cells, and an insulating film being made of an insulating material and covering an area of the first current collector plate facing the exhaust duct. The safety valve opens when an internal pressure of any of the battery cells reaches or exceeds a predetermined level.
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公开(公告)号：US11380948B2
公开(公告)日：2022-07-05
申请号：US16320096
申请日：2017-07-06
Inventor： Keisuke Shimizu , Akira Takano , Shinya Motokawa , Yoshito Kaga , Takeshi Enomoto
IPC: H01M10/6554 , H01M10/613 , H01M10/647 , H01M10/6556 , H01M10/6568 , H01M10/6567 , H01M50/20
Abstract: A battery module includes a battery assembly and a thermally-conductive member to hold or support battery assembly. The battery assembly has a plurality of first batteries and a plurality of second batteries that are alternately stacked. The thermally-conductive member includes a first component and a second component that are each disposed along a stacking direction of the batteries. The first component has a heat resistance to the second batteries higher than to the first batteries. The second component has a heat resistance to the first batteries higher than to the second batteries.
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公开(公告)号：US10347886B2
公开(公告)日：2019-07-09
申请号：US15314582
申请日：2015-08-21
Inventor： Shinya Motokawa , Daisuke Kishii , Nobuyuki Nakasawa , Keisuke Shimizu , Akira Takano
Abstract: A battery module includes a plurality of battery blocks. Each battery block includes: a cell assembly including a plurality of cells; a block holder for holding the cell assembly; and a metal plate. The plurality of cells are held in the block holder while the positive electrodes and negative electrodes of the cells are aligned. A projection or the metal plate is disposed outside the block holder. The tip of the projection of one of adjacent battery blocks is in contact with the metal plate of the other.
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公开(公告)号：US10003055B2
公开(公告)日：2018-06-19
申请号：US14912370
申请日：2014-10-29
Inventor： Keisuke Shimizu , Yoshihiro Shiotsu , Hiroshi Takasaki
CPC classification number: H01M2/1235 , H01M2/1077 , H01M2/1264
Abstract: A battery module includes: a plurality of battery cells and a case for housing the plurality of battery cells. The case has a plurality of through-holes which are provided to a wall part forming an outer face of the battery module and via which gas ejected from at least one of the plurality of battery cells is discharged in a dispersed manner.
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