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公开(公告)号：US11984618B2
公开(公告)日：2024-05-14
申请号：US17979108
申请日：2022-11-02
发明人： Takanobu Yamada , Tetsuya Kaneko
IPC分类号： H01M4/62 , H01M4/13 , H01M4/36 , H01M10/0525 , H01M10/653 , H01M50/446 , H01M50/46
CPC分类号： H01M50/46 , H01M4/13 , H01M4/366 , H01M4/628 , H01M10/0525 , H01M10/653 , H01M50/446
摘要： A nonaqueous electrolyte secondary battery includes a positive electrode including a positive electrode collector, a positive electrode active material layer on part of the surface of the positive electrode collector, and an insulating layer on another part of the surface of the positive electrode collector; a negative electrode including a negative electrode collector; and a negative electrode active material layer on part of the surface of the negative electrode collector; a separator that insulates the positive and negative electrodes; and a nonaqueous electrolyte. A width of the negative electrode active material layer is wider than the positive electrode active material layer. The insulating layer protrudes from the negative electrode active material layer; and exhibits a thermal shrinkage factor of 13% or less in a direction parallel to the surface of a square insulating layer sample having a side length of 5 cm and heated at 150° C. for 1 hour.
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公开(公告)号：US11522197B2
公开(公告)日：2022-12-06
申请号：US16832037
申请日：2020-03-27
发明人： Takanobu Yamada , Tetsuya Kaneko
IPC分类号： H01M4/62 , H01M10/0525 , H01M4/36 , H01M4/13
摘要： An object of the present invention is to provide a nonaqueous electrolyte secondary battery that allows more suitably suppressing short circuits between a positive electrode collector and a negative electrode active material layer, even when the battery generates heat. Provided is a nonaqueous electrolyte secondary battery 1 that includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode collector, a positive electrode active material layer, and an insulating layer provided on another part of the surface of the positive electrode collector, so as to be adjacent to the positive electrode active material layer. The insulating layer contains an inorganic filler and a binder. A penetration strength of the insulating layer in a thickness direction perpendicular to the surface of the positive electrode collector is 0.05 N/mm2 or higher.
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公开(公告)号：US11650260B2
公开(公告)日：2023-05-16
申请号：US17224340
申请日：2021-04-07
IPC分类号： G01R31/385 , G01R31/3842 , H01M10/44 , H01M10/42 , H02J7/00 , G01R31/50 , G01R31/388
CPC分类号： G01R31/3865 , G01R31/3842 , G01R31/50 , H01M10/4285 , H01M10/44 , H02J7/0069 , G01R31/388
摘要： A method of evaluating a power storage device includes at least [a] to [f] below. [a] A power storage device is prepared. [b] A charge level of the power storage device is adjusted to produce a first potential difference between a positive electrode and a negative electrode. [c] The positive electrode or the negative electrode is selected as a reference electrode. [d] After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. [e] The rod-shaped member is stopped. [f] The power storage device is evaluated based on a state of the power storage device after the rod-shaped member is stopped.
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4.发明申请公开(公告)号：US20190162771A1
公开(公告)日：2019-05-30
申请号：US16197571
申请日：2018-11-21
IPC分类号： G01R31/02 , G01R31/3842 , G01R31/388 , H02J7/00
摘要： A method of evaluating a power storage device includes at least [a] to [f] below. [a] A power storage device is prepared. [b] A charge level of the power storage device is adjusted to produce a first potential difference between a positive electrode and a negative electrode. [c] The positive electrode or the negative electrode is selected as a reference electrode. [d] After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. [e] The rod-shaped member is stopped. [f] The power storage device is evaluated based on a state of the power storage device after the rod-shaped member is stopped.
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5.发明公开公开(公告)号：US20240219473A1
公开(公告)日：2024-07-04
申请号：US18601023
申请日：2024-03-11
IPC分类号： G01R31/385 , G01R31/3842 , G01R31/388 , G01R31/50 , H01M10/42 , H01M10/44 , H02J7/00
CPC分类号： G01R31/3865 , G01R31/3842 , G01R31/50 , H01M10/4285 , H01M10/44 , H02J7/0069 , G01R31/388
摘要： A method of evaluating an all-solid-state battery includes preparing the all-solid-state battery. A charge level of the all-solid-state battery is adjusted to produce a first potential difference between a positive electrode and a negative electrode. The positive electrode or the negative electrode is selected as a reference electrode. After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. The rod-shaped member is stopped. The all-solid-state battery is evaluated based on a state of the all-solid-state battery after the rod-shaped member is stopped.
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公开(公告)号：US10718816B2
公开(公告)日：2020-07-21
申请号：US16222170
申请日：2018-12-17
发明人： Yuya Ishihara , Kensaku Miyazawa , Tetsuya Kaneko
摘要： (a) A power storage device is prepared. (b) An evaluation jig is prepared. The evaluation jig includes an insulating tubular member and a conductive needle-shaped member. (c) A charge level of the power storage device is adjusted. (d) A positive electrode or a negative electrode is selected as a reference electrode. (e) An operation to insert the evaluation jig into the power storage device is performed. (f) The insertion operation is controlled to stop the tubular member when a tip end of the needle-shaped member comes in contact with an electrode different from the reference electrode. (g) Short-circuiting through the needle-shaped member is caused. (h) The power storage device is evaluated based on a state of the short-circuiting power storage device.
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公开(公告)号：US11522253B2
公开(公告)日：2022-12-06
申请号：US16832165
申请日：2020-03-27
发明人： Takanobu Yamada , Tetsuya Kaneko
IPC分类号： H01M4/13 , H01M4/62 , H01M10/0525 , H01M4/36 , H01M50/446 , H01M50/46 , H01M10/653
摘要： An object to provide a nonaqueous electrolyte secondary battery that allows more suitably suppressing short circuits between a positive electrode collector and a negative electrode active material layer, even when the battery generates heat. A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator. The positive electrode includes a positive electrode collector, a positive electrode active material layer, and an insulating layer provided on another part of the surface of the positive electrode collector, adjacent to the positive electrode active material layer. The insulating layer contains an inorganic filler and a binder; and is configure to exhibit a value of 13% or less of a thermal shrinkage factor in a direction parallel to the surface of an evaluation sample of an insulating layer formed to a square shape having a length of each side of 5 cm and heated at 150° C. for 1 hour.
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公开(公告)号：US11002799B2
公开(公告)日：2021-05-11
申请号：US16900232
申请日：2020-06-12
IPC分类号： H01M10/48 , H01G13/00 , G01R31/50 , G01R31/3842 , H01M10/44 , H01M10/42 , G01R31/385 , H02J7/00 , G01R31/388
摘要： A method of evaluating a power storage device includes at least [a] to [f] below. [a] A power storage device is prepared. [b] A charge level of the power storage device is adjusted to produce a first potential difference between a positive electrode and a negative electrode. [c] The positive electrode or the negative electrode is selected as a reference electrode. [d] After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. [e] The rod-shaped member is stopped. [f] The power storage device is evaluated based on a state of the power storage device after the rod-shaped member is stopped.
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公开(公告)号：US10797293B2
公开(公告)日：2020-10-06
申请号：US15809428
申请日：2017-11-10
发明人： Masato Kamiya , Masaru Ishii , Takayuki Hojo , Tetsuya Kaneko
IPC分类号： H01M2/26 , H01M10/0525 , H01M2/10 , H01M2/30 , H01M2/20
摘要： A battery pack includes a plurality of unit cells, each including an electrode body having a structure in which a positive electrode and a negative electrode are stacked, and a busbar that electrically connects a positive electrode terminal to a negative electrode terminal between the unit cells. The unit cells are stacked adjacent to one another in the same direction as a direction in which the positive electrode and the negative electrode of the electrode body are stacked. The busbar electrically connects the unit cells disposed apart from each other among the unit cells excluding the unit cells disposed adjacent to each other.
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10.发明授权公开(公告)号：US10725119B2
公开(公告)日：2020-07-28
申请号：US16197571
申请日：2018-11-21
IPC分类号： H01M10/48 , H01G13/00 , G01R31/50 , G01R31/3842 , H01M10/44 , H01M10/42 , G01R31/385 , H02J7/00 , H01J7/00 , G01R31/388
摘要： A method of evaluating a power storage device includes at least [a] to [f] below. [a] A power storage device is prepared. [b] A charge level of the power storage device is adjusted to produce a first potential difference between a positive electrode and a negative electrode. [c] The positive electrode or the negative electrode is selected as a reference electrode. [d] After the charge level is adjusted, an operation to insert a conductive rod-shaped member into a stack portion along a direction of stack of the positive electrode and the negative electrode is performed while a second potential difference between the reference electrode and the rod-shaped member is measured. [e] The rod-shaped member is stopped. [f] The power storage device is evaluated based on a state of the power storage device after the rod-shaped member is stopped.
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