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1.发明授权公开(公告)号：US11056678B2
公开(公告)日：2021-07-06
申请号：US16384086
申请日：2019-04-15
发明人： Nobuhiro Inoue , Sachiko Kataniwa , Kazutaka Kuriki , Junpei Momo
IPC分类号： H01M4/02 , H01M4/04 , H01G11/28 , H01M4/62 , H01G11/50 , H01G11/84 , H01M4/133 , H01M4/583 , H01M10/0525
摘要： An object is to suppress electrochemical decomposition of an electrolyte solution and the like at a negative electrode in a lithium ion battery or a lithium ion capacitor: thus, irreversible capacity is reduced, cycle performance is improved, or operating temperature range is extended. A negative electrode for a power storage device including a negative electrode current collector, a negative electrode active material layer which is over the negative electrode current collector and includes a plurality of particles of a negative electrode active material, and a film covering part of the negative electrode active material. The film has an insulating property and lithium ion conductivity.
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公开(公告)号：US10978757B2
公开(公告)日：2021-04-13
申请号：US17008699
申请日：2020-09-01
IPC分类号： H02J7/00 , H01M10/6571 , H01M10/637 , H01M10/44 , H01M10/63 , H01M10/46 , H01M10/48 , H02J7/35 , H02S10/20 , H01M10/615 , H01M10/0525 , H01M10/052
摘要： Disclosed is a power storage unit which can safely operate over a wide temperature range. The power storage unit includes: a power storage device; a heater for heating the power storage device; a temperature sensor for sensing the temperature of the power storage device; and a control circuit configured to inhibit charge of the power storage device when its temperature is lower than a first temperature or higher than a second temperature. The first temperature is exemplified by a temperature which allows the formation of a dendrite over a negative electrode of the power storage device, whereas the second temperature is exemplified by a temperature which causes decomposition of a passivating film formed over a surface of a negative electrode active material.
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公开(公告)号：US10886572B2
公开(公告)日：2021-01-05
申请号：US16802923
申请日：2020-02-27
发明人： Masaki Yamakaji , Junpei Momo , Ryota Tajima , Takahiro Kasahara
IPC分类号： H01M10/42 , H01M10/48 , H01M2/02 , H01M10/0525
摘要： To provide a lithium-ion storage battery or electronic device that is flexible and highly safe. One embodiment of the present invention is a flexible storage battery including a positive electrode, a negative electrode, a separator between the positive electrode and the negative electrode, an exterior body that surrounds the positive electrode, the negative electrode, and the separator, and a wiring provided along the exterior body. At least part of the wiring is more easily breakable by deformation than the exterior body. The wiring is more vulnerable to deformation than the exterior body and thus damaged earlier than the exterior body. Damage to the wiring is detected and an alert is sent to a user; thus, the use of the storage battery can be stopped before the exterior body is damaged.
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公开(公告)号：US10748673B2
公开(公告)日：2020-08-18
申请号：US15097565
申请日：2016-04-13
发明人： Junpei Momo , Hiroatsu Todoriki , Kuniharu Nomoto
IPC分类号： H01B1/04 , H01M4/04 , H01M4/133 , H01M4/1393 , H01M10/058 , H01G11/32 , H01G11/86 , H01M4/587 , H01M10/052 , H01M12/00 , H01G11/38 , H01M10/0525 , H01M4/02 , H01G11/06
摘要： A power storage device with high output is provided, in which the specific surface area is increased while keeping the easy-to-handle particle size of its active material. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte. The negative electrode active material layer includes a negative electrode active material which is a particle in which a plurality of slices of graphite is overlapped with each other with a gap therebetween. It is preferable that the grain diameter of the particle be 1 μm to 50 μm. Further, it is preferable that the electrolyte be in contact with the gap between the slices of graphite.
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公开(公告)号：US10581060B2
公开(公告)日：2020-03-03
申请号：US15046877
申请日：2016-02-18
发明人： Junpei Momo , Yohei Momma
IPC分类号： H01M4/04 , H01M10/0525 , H01M4/485 , H01M4/587
摘要： A lithium-ion secondary battery having stable charge characteristics and lifetime characteristics is manufactured. Before the secondary battery is completed, a positive electrode is subjected to an electrochemical reaction in a large amount of electrolyte solution in advance, so that the positive electrode can have stability. The use of the positive electrode enables the secondary battery to be highly reliable. If a negative electrode is also subjected to an electrochemical reaction in a large amount of electrolyte solution in advance, the secondary battery can be more highly reliable.
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公开(公告)号：US10235961B2
公开(公告)日：2019-03-19
申请号：US15159036
申请日：2016-05-19
发明人： Yohei Momma , Takahiro Kawakami , Junpei Momo
IPC分类号： H01B13/00 , H05K1/11 , G09G3/36 , G06F3/044 , G06F3/041 , G02F1/1343 , G02F1/1333
摘要： A novel element, a novel formation method of a film, or a novel formation method of an element is provided. Alternatively, a film including graphene is formed at low cost and high yield. A formation method of a film including graphene includes a first step of forming a film including graphene oxide that includes a first region and a second region by application of a dispersion liquid in which graphene oxide is dispersed over a substrate and removal of dispersion medium from the applied dispersion liquid, a second step of forming a film including graphene by light irradiation to the first region to reduce the first region, and a third step of removing the second region by washing.
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公开(公告)号：US10199851B2
公开(公告)日：2019-02-05
申请号：US14862307
申请日：2015-09-23
发明人： Masaaki Hiroki , Junpei Momo , Hideaki Kuwabara
摘要： A secondary battery module capable of feeding power to a wearable device in a non-contact manner is provided. A power feeding system for an electronic device is provided. The power feeding system includes a secondary battery module and an electronic device. The secondary battery module includes a flexible secondary battery, a power sending portion for non-contact power transmission, a flexible thermoelectric power generating device, and a belt portion storing the flexible secondary battery and the flexible thermoelectric power generating device. The electronic device includes a power receiving portion for non-contact power transmission and is capable of power transmission from the power sending portion for non-contact power transmission which is included in the secondary battery module to the power receiving portion for non-contact power transmission which is included in the electronic device.
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公开(公告)号：US09859585B2
公开(公告)日：2018-01-02
申请号：US13778205
申请日：2013-02-27
发明人： Junpei Momo
IPC分类号： H01M2/02 , H01M2/16 , H01M10/04 , H01M10/052 , H01G11/12 , H01G11/52 , H01G11/76 , H01G11/78 , H01M2/26 , H01M10/0585 , H01M4/62
CPC分类号： H01M10/0436 , H01G11/12 , H01G11/52 , H01G11/76 , H01G11/78 , H01M2/0275 , H01M2/1653 , H01M2/266 , H01M4/625 , H01M10/0459 , H01M10/0472 , H01M10/052 , H01M10/0585 , Y02E60/13
摘要： To provide a sheet-like power storage device which can be curved or bent in at least one axis direction. A power storage device includes a power storage element including a plurality of flexible sheet-like positive electrodes each having one end portion fixed to a positive electrode tab; a plurality of flexible sheet-like negative electrodes each having one end portion fixed to a negative electrode tab; and a plurality of flexible sheet-like separators. The positive electrodes and the negative electrodes are alternately stacked so as to overlap with each other with the separator interposed therebetween. The power storage element is sealed in a flexible exterior body.
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公开(公告)号：US09840151B2
公开(公告)日：2017-12-12
申请号：US15387077
申请日：2016-12-21
发明人： Junpei Momo , Hiroyuki Miyake , Kei Takahashi
CPC分类号： B60L11/1816 , B60L11/182 , G01R31/3606 , H01M4/625 , H01M10/0525 , H01M10/44 , H02J7/0052 , H02J7/0057 , H02J7/0068 , Y02E60/122 , Y02T10/7011
摘要： An object is to inhibit a decrease in the capacity of a power storage device or to compensate the capacity, by adjusting or rectifying an imbalance between a positive electrode and a negative electrode, which is caused by decomposition of an electrolyte solution at the negative electrode. Provided is a charging method of a power storage device including a positive electrode using an active material that exhibits two-phase reaction, a negative electrode, and an electrolyte solution. The method includes the steps of, after constant current charging, performing constant voltage charging with a voltage that does not cause decomposition of the electrolyte solution until a charging current becomes lower than or equal to a lower current value limit; and after the constant voltage charging, performing additional charging with a voltage that causes decomposition of the electrolyte solution until a resistance of the power storage device reaches a predetermined resistance.
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公开(公告)号：US09812745B2
公开(公告)日：2017-11-07
申请号：US14107174
申请日：2013-12-16
发明人： Masaaki Hiroki , Minoru Takahashi , Junpei Momo
IPC分类号： H01M10/52 , H01M2/02 , H01M2/12 , H01M10/0525 , H01M2/16
CPC分类号： H01M10/52 , H01M2/0277 , H01M2/0285 , H01M2/0292 , H01M2/1264 , H01M2/1613 , H01M2/1653 , H01M2/1666 , H01M10/0525
摘要： To provide a highly reliable power storage device, to improve the security of a power storage device, and to suppress deterioration of a power storage device, a power storage device includes, inside an exterior material, a positive electrode, a negative electrode facing the positive electrode, an electrolyte solution between the positive electrode and the negative electrode, and an adsorbent. A separation body which is impermeable to the electrolyte solution and permeable to a gas is provided between the electrolyte solution and the adsorbent.
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