Patents by Inventor Daisuke Kishii
Daisuke Kishii has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11811100Abstract: 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.Type: GrantFiled: November 7, 2022Date of Patent: November 7, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Motokawa, Daisuke Kishii, Keisuke Shimizu, Akira Takano
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Publication number: 20230060668Abstract: 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.Type: ApplicationFiled: November 7, 2022Publication date: March 2, 2023Inventors: Shinya MOTOKAWA, Daisuke KISHII, Keisuke SHIMIZU, Akira TAKANO
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Patent number: 11532860Abstract: 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.Type: GrantFiled: January 26, 2021Date of Patent: December 20, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Motokawa, Daisuke Kishii, Keisuke Shimizu, Akira Takano
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Patent number: 11322793Abstract: A battery module includes a plurality of cylindrical batteries that each include a safety valve surrounded by an annular breaking portion configured to break when internal pressure of each of the batteries exceeds a predetermined level. The battery module further includes an exhaust duct to guide gas emitted from the cylindrical battery to outside the module when safety valve is opened, and a gas direction regulator component disposed between the cylindrical batteries and the exhaust duct. The gas direction regulator component has a plurality of openings to expose the respective safety valves. Portions of the gas direction regulator component overhang areas overlapping the respective safety valves so as to cover an end of each safety valve opposite another end of each safety valve adjacent to an exit of the exhaust duct.Type: GrantFiled: December 13, 2017Date of Patent: May 3, 2022Assignee: PANASONIC INTEILECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Keisuke Shimizu, Shinya Motokawa, Daisuke Kishii, Akira Takano
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Publication number: 20210151842Abstract: 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.Type: ApplicationFiled: January 26, 2021Publication date: May 20, 2021Inventors: Shinya MOTOKAWA, Daisuke KISHII, Keisuke SHIMIZU, Akira TAKANO
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Patent number: 10938018Abstract: 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.Type: GrantFiled: November 8, 2017Date of Patent: March 2, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Motokawa, Daisuke Kishii, Keisuke Shimizu, Akira Takano
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Publication number: 20200099030Abstract: A battery module includes a plurality of cylindrical batteries that each include a safety valve surrounded by an annular breaking portion configured to break when internal pressure of each of the batteries exceeds a predetermined level. The battery module further includes an exhaust duct to guide gas emitted from the cylindrical battery to outside the module when safety valve is opened, and a gas direction regulator component disposed between the cylindrical batteries and the exhaust duct. The gas direction regulator component has a plurality of openings to expose the respective safety valves. Portions of the gas direction regulator component overhang areas overlapping the respective safety valves so as to cover an end of each safety valve opposite another end of each safety valve adjacent to an exit of the exhaust duct.Type: ApplicationFiled: December 13, 2017Publication date: March 26, 2020Inventors: Keisuke SHIMIZU, Shinya MOTOKAWA, Daisuke KISHII, Akira TAKANO
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Patent number: 10511002Abstract: 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.Type: GrantFiled: February 17, 2016Date of Patent: December 17, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Keisuke Shimizu, Daisuke Kishii, Takeshi Enomoto
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Patent number: 10396326Abstract: Battery block includes the following elements: a plurality of batteries each of which includes safety valve; positive electrode-side current collecting part for collecting current by connecting the positive electrode sides of batteries; and negative electrode-side current collecting part for collecting current by connecting the negative electrode sides of the batteries. In positive electrode-side current collecting part and negative electrode-side current collecting part, the part that includes safety valves is set to one side current collecting part. On the other side current collecting part opposite the one side current collecting part, fuse that fuses at a predetermined temperature is disposed on each of batteries.Type: GrantFiled: February 10, 2014Date of Patent: August 27, 2019Assignee: SANYO ELECTRIC CO., LTD.Inventors: Takashi Hasegawa, Masatoshi Nagayama, Daisuke Kishii, Akira Takano
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Patent number: 10347886Abstract: 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.Type: GrantFiled: August 21, 2015Date of Patent: July 9, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinya Motokawa, Daisuke Kishii, Nobuyuki Nakasawa, Keisuke Shimizu, Akira Takano
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Patent number: 10297813Abstract: An electrode member includes a substrate portion formed of a metal thin plate, a connection portion connected to the electrode terminal of a cell, and a fuse for electrically connecting the substrate portion to the connection portion. In the plane orthogonal to the longitudinal direction of the cell, the length of the fuse is greater than the width of the connection portion.Type: GrantFiled: October 21, 2015Date of Patent: May 21, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Akira Takano, Daisuke Kishii
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Patent number: 10263229Abstract: Cells are arranged in a predetermined arrangement and are held by holding unit. The holding unit includes a first holding unit, a second holding unit, and a third holding unit. The first holding unit holds cells so as to partially cover the one side of the outer peripheral surfaces of the cells in the longitudinal direction. The second holding unit holds the cells so as to partially cover the other side of the outer peripheral surfaces of the cells in the longitudinal direction. The third holding unit holds the cells so as to cover a region that is covered with neither the first holding unit nor the second holding unit, of the outer peripheral surfaces of the cells in the longitudinal direction.Type: GrantFiled: March 5, 2015Date of Patent: April 16, 2019Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Shinya Motokawa, Daisuke Kishii, Keisuke Shimizu, Akira Takano
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Patent number: 9548477Abstract: The present invention provides a battery block that accommodates unit cells having higher capacities, and, even in case of abnormal heat generation in the unit cell, does not cause abnormal heat generation in the neighboring unit cells, thereby preventing a chain reaction of degradations and abnormalities of the accommodated unit cells. The battery block of the present invention includes a battery case having a minimum thickness section satisfying the relationship “K2/K1?K3?1”. K1 is the thermal conductance between the battery case and the unit cell. K2 is the thermal conductance of the minimum thickness section of the battery case between two neighboring holes for accommodating the respective unit cells. K3 is a ratio between the abnormal heat temperature of a reference cell and the ambient temperature causing abnormal heat generation in this cell.Type: GrantFiled: March 1, 2012Date of Patent: January 17, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yasuhiro Asaida, Yukio Nishikawa, Hideaki Hamada, Naoto Hosotani, Daisuke Kishii
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Patent number: 9293794Abstract: A cooling unit 20 is provided in the vicinity of a cell 10, and includes a sealed portion 22 formed by sealing a sheet 21. An easy-to-open portion 24 is provided in part of the sealed portion 22, and the easy-to-open portion 24 is opened when the cell 10 abnormally generates heat.Type: GrantFiled: June 22, 2011Date of Patent: March 22, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTDInventors: Masato Fujikawa, Tomohiko Yokoyama, Keisuke Shimizu, Shunsuke Yasui, Daisuke Kishii
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Patent number: 9246147Abstract: A battery retainment block includes a plurality of block pieces each having a battery storage unit for retaining a battery. The plurality of block pieces are aligned and, among the plurality of block pieces, two block pieces that are adjacent to each other are coupled together. A gap is provided between the two block pieces that are adjacent to each other to serve as a circulation space for circulating a medium.Type: GrantFiled: July 26, 2012Date of Patent: January 26, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Daisuke Kishii, Shinya Geshi, Oose Okutani, Toshiki Itoi
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Patent number: 9088031Abstract: A battery module 100 includes a plurality of cells 10, wherein a cooling unit 20 in which a coolant is sealed is disposed in the vicinity of the cells 10, the coolant is liquid adjusted to have a viscosity within the range of 2 Pa·s to 350 Pa·s, and the cooling unit 20 includes an unsealable portion 23 which is partially unsealed to release the coolant when at least one of the cells 10 abnormally generates heat.Type: GrantFiled: July 20, 2011Date of Patent: July 21, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Keisuke Shimizu, Tomohiko Yokoyama, Masato Fujikawa, Shunsuke Yasui, Daisuke Kishii
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Patent number: 8846235Abstract: A battery module including: a plurality of aligned cells, wherein a cooling unit accommodating a cooling agent is provided in a vicinity of the cells, part of the cooling unit is a vulnerable section having a relatively low compressive strength, and the vulnerable section is unsealed when heat is abnormally generated in at least one of the cells.Type: GrantFiled: December 29, 2011Date of Patent: September 30, 2014Assignee: Panasonic CorporationInventors: Tomohiko Yokoyama, Masato Fujikawa, Keisuke Shimizu, Shunsuke Yasui, Daisuke Kishii
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Publication number: 20140154545Abstract: A battery retainment block includes a plurality of block pieces each having a battery storage unit for retaining a battery. The plurality of block pieces are aligned and, among the plurality of block pieces, two block pieces that are adjacent to each other are coupled together. A gap is provided between the two block pieces that are adjacent to each other to serve as a circulation space for circulating a medium.Type: ApplicationFiled: July 26, 2012Publication date: June 5, 2014Applicant: PANASONIC CORPORATIONInventors: Daisuke Kishii, Shinya Geshi, Oose Okutani, Toshiki Itoi
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Publication number: 20130344376Abstract: The present invention provides a battery block that accommodates unit cells having higher capacities, and, even in case of abnormal heat generation in the unit cell, does not cause abnormal heat generation in the neighboring unit cells, thereby preventing a chain reaction of degradations and abnormalities of the accommodated unit cells. The battery block of the present invention includes a battery case having a minimum thickness section satisfying the relationship “K2/K1?K3?1”. K1 is the thermal conductance between the battery case and the unit cell. K2 is the thermal conductance of the minimum thickness section of the battery case between two neighboring holes for accommodating the respective unit cells. K3 is a ratio between the abnormal heat temperature of a reference cell and the ambient temperature causing abnormal heat generation in this cell.Type: ApplicationFiled: March 1, 2012Publication date: December 26, 2013Applicant: Panasonic CorporationInventors: Yasuhiro Asaida, Yukio Nishikawa, Hideaki Hamada, Naoto Hosotani, Daisuke Kishii
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Patent number: 8399114Abstract: A battery module includes a first unit cell, a second unit cell, a first exhaust chamber, and a second exhaust chamber. The first unit cell is disposed so that a positive electrode terminal faces the first direction. The second unit cell is connected in series to the first unit cell, the negative electrode terminal is disposed so as to face the first direction, and the second unit is disposed so as to be adjacent to the first unit cell. The first exhaust chamber is disposed so as to face the positive electrode terminal of the first unit cell, and discharges a gas which is emitted from the positive electrode terminal of the first unit cell. The second exhaust chamber is disposed so as to face the positive electrode terminal of the second unit cell, and discharges a gas generated from the positive electrode terminal of the second unit cell. The end surface of the second unit cell in the first direction and the outer surface of the first exhaust chamber in the first direction are flush with each other.Type: GrantFiled: July 22, 2011Date of Patent: March 19, 2013Assignee: Panasonic CorporationInventors: Daisuke Kishii, Takuya Nakashima