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1.发明授权公开(公告)号：US10535899B2
公开(公告)日：2020-01-14
申请号：US15371820
申请日：2016-12-07
发明人： Kazuhei Narita , Ryota Tajima , Teppei Oguni
IPC分类号： H01M10/0569 , G04G19/00 , H01G11/28 , H01G11/32 , H01G11/52 , H01G11/60 , H01G11/62 , H01G11/86 , H01M2/16 , H01M4/525 , H01M4/587 , H01M4/66 , H01M10/0525 , H01M10/0568 , H01G11/84 , H01M4/36
摘要： To provide a power storage device whose charge and discharge characteristics are unlikely to be degraded by heat treatment. To provide a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolytic solution, and an exterior body. The separator is located between the positive electrode and the negative electrode. The separator contains polyphenylene sulfide or solvent-spun regenerated cellulosic fiber. The electrolytic solution contains a solute and two or more kinds of solvents. The solute contains LiBETA. One of the solvents is propylene carbonate.
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公开(公告)号：US10930904B2
公开(公告)日：2021-02-23
申请号：US15471261
申请日：2017-03-28
发明人： Ryota Tajima , Kazuhei Narita , Kensuke Yoshizumi
摘要： A battery module with high impact resistance is provided. A battery module using an elastic body such as rubber for its exterior body covering a battery is provided. A bendable battery module is provided. As the exterior body covering a battery, an elastic body such as rubber is used, and the exterior body is molded in two steps. First, a first portion provided with a depression in which a battery is stored is molded using a first mold. Next, a battery is inserted into the first portion. Subsequently, second molding is performed using a second mold so as to fill an opening of the depression in the first portion, so that a second portion is formed. The second portion serves as a cover for closing the opening of the depression in the first portion. The second portion is formed in contact with part of the electrodes in the battery and part of an end portion of the second exterior body in the battery.
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3.发明授权公开(公告)号：US11264648B2
公开(公告)日：2022-03-01
申请号：US16704142
申请日：2019-12-05
发明人： Kazuhei Narita , Ryota Tajima , Teppei Oguni
IPC分类号： H01M10/0569 , H01G11/84 , H01M4/36 , H01M50/44 , H01M50/411 , H01M50/429 , G04G19/00 , H01G11/28 , H01G11/32 , H01G11/52 , H01G11/60 , H01G11/62 , H01G11/86 , H01M4/525 , H01M4/587 , H01M4/66 , H01M10/0525 , H01M10/0568
摘要： To provide a power storage device whose charge and discharge characteristics are unlikely to be degraded by heat treatment. To provide a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolytic solution, and an exterior body. The separator is located between the positive electrode and the negative electrode. The separator contains polyphenylene sulfide or solvent-spun regenerated cellulosic fiber. The electrolytic solution contains a solute and two or more kinds of solvents. The solute contains LiBETA. One of the solvents is propylene carbonate.
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公开(公告)号：US10658701B2
公开(公告)日：2020-05-19
申请号：US15407283
申请日：2017-01-17
发明人： Nobuhiro Inoue , Masaki Yamakaji , Jun Ishikawa , Kazuhei Narita
IPC分类号： H01M10/0568 , H01M4/36 , H01M4/587 , H01M4/38 , H01M4/62 , H01M10/0525 , H01M10/054 , H01M4/02 , H01M10/42
摘要： A storage battery includes positive and negative electrodes and an electrolytic solution. The negative electrode includes a first element and carbon. The first element is any of silicon, tin, gallium, aluminum, germanium, lead, antimony, bismuth, silver, zinc, cadmium, and indium. The negative electrode includes an active material and a first layer in contact with a surface of the active material. The first layer has a thickness of 10 nm to 1000 nm inclusive. The electrolytic solution contains first and second cations. The first cation is one or more of a lithium ion, a sodium ion, a calcium ion, and a magnesium ion. The second cation is an imidazolium cation or a tertiary sulfonium cation.
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公开(公告)号：US11600883B2
公开(公告)日：2023-03-07
申请号：US17179979
申请日：2021-02-19
发明人： Ryota Tajima , Kazuhei Narita , Kensuke Yoshizumi
IPC分类号： H01M50/209 , H01M50/50 , H01M50/116 , H01M50/531 , H01M50/543 , H01M50/178
摘要： A battery module with high impact resistance is provided. A battery module using an elastic body such as rubber for its exterior body covering a battery is provided. A bendable battery module is provided. As the exterior body covering a battery, an elastic body such as rubber is used, and the exterior body is molded in two steps. First, a first portion provided with a depression in which a battery is stored is molded using a first mold. Next, a battery is inserted into the first portion. Subsequently, second molding is performed using a second mold so as to fill an opening of the depression in the first portion, so that a second portion is formed. The second portion serves as a cover for closing the opening of the depression in the first portion. The second portion is formed in contact with part of the electrodes in the battery and part of an end portion of the second exterior body in the battery.
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公开(公告)号：US11038207B2
公开(公告)日：2021-06-15
申请号：US16462420
申请日：2017-11-22
发明人： Kazuhei Narita , Ryota Tajima
IPC分类号： H01M10/0569 , H01G11/52 , H01G11/60 , H01G11/62 , H01G11/68 , H01G11/78 , H01M4/66 , H01M10/052 , H01M10/0568 , H01M50/44 , H01M50/116 , H01M50/209 , H01M50/431 , H01M50/543 , H01M50/557 , H01M50/429
摘要： Provided is a power storage device whose charging and discharging characteristics are unlikely to be degraded by heat treatment or a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolyte, and an exterior body. The separator is positioned between the positive electrode and the negative electrode and includes polyphenylene sulfide or cellulosic fiber. The electrolyte includes propylene carbonate, ethylene carbonate, and vinylene carbonate, lithium hexafluorophosphate, and lithium bis(pentafluoroethanesulfonyl)amide. A concentration of lithium hexafluorophosphate with respect to the electrolyte is more than or equal to 0.01 wt % and less than or equal to 1.9 wt % in a weight ratio.
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公开(公告)号：US10158108B2
公开(公告)日：2018-12-18
申请号：US14919136
申请日：2015-10-21
发明人： Kazuhei Narita , Jun Ishikawa , Teppei Oguni , Aya Uchida
IPC分类号： H01M2/16 , H01M2/18 , H01M10/0566 , H01G11/28 , H01G11/52 , H01G11/58 , H01M10/0525 , H01G11/50
摘要： When cellulose is used as a separator, the cellulose is impregnated with an ionic liquid. Charge and discharge are repeated with this separator touching a surface of a current collector; then, the separator is changed in color. Thus, it is an object to provide a power storage device with a structure in which a side reaction other than a battery reaction, e.g., a change in color of separator, is unlikely to occur. In the power storage device, a separator impregnated with an ionic liquid is not in contact with a surface of a current collector. The separator has a tubular shape, a bag-like shape, or a sheet-like shape. The separator includes cellulose. The power storage device including the ionic liquid is non-volatile and non-flammable. The power storage device can be bent.
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