公开(公告)号：US20240332504A1

公开(公告)日：2024-10-03

申请号：US18506149

申请日：2023-11-10

申请人： AESC Japan Ltd.

发明人： Fang jie Mo

IPC分类号： H01M4/36 ,  C01B25/45 ,  H01M4/58 ,  H01M4/62 ,  H01M10/0525

CPC分类号： H01M4/366 ,  C01B25/45 ,  H01M4/5825 ,  H01M4/625 ,  H01M10/0525 ,  C01P2002/54 ,  C01P2006/40 ,  H01M2004/021 ,  H01M2004/028

摘要： A positive electrode material is provided, which includes: lithium manganese iron phosphate and carbon, the carbon is coated on the surface of the particle of the lithium manganese iron phosphate; the carbon accounts for 1.4% to 4.7% of the total mass of the positive electrode material. A preparation method of positive electrode material includes the following steps: after mixing and drying carbon source, manganese source, lithium source, iron source, doping element and phosphorus source, performing pre-sintering and pre-fusion at the first stage temperature, then increasing the temperature to the second stage temperature to continue sintering to obtain the positive electrode material. A positive electrode sheet is further provided, and a raw material for preparing the positive electrode sheet includes the positive electrode material described above.

公开(公告)号：US20240222754A1

公开(公告)日：2024-07-04

申请号：US18305372

申请日：2023-04-23

申请人： AESC Japan Ltd.

发明人： Yonggang Xu

IPC分类号： H01M50/184 ,  H01M50/107 ,  H01M50/152 ,  H01M50/186

CPC分类号： H01M50/184 ,  H01M50/107 ,  H01M50/152 ,  H01M50/186

摘要： A cylindrical battery including a housing, a cell, a cover, and a sealing member is provided. The cell includes a cell body and a first tab. The cover is electrically connected to the first tab, and a protruding portion is provided on the cover. The sealing member is provided with an avoidance hole for the protruding portion to protrude from, and the protruding portion on the cover is able to reach out through the avoidance hole on the sealing member to be in direct contact with a surrounding wall, thereby ensuring that the cover is electrically connected to the surrounding wall of the housing.

公开(公告)号：US20240178479A1

公开(公告)日：2024-05-30

申请号：US18169164

申请日：2023-02-14

申请人： AESC Japan Ltd.

发明人： Hui Zhang ,  Yafei He

IPC分类号： H01M10/6556 ,  C09J9/02 ,  H01M10/613 ,  H01M50/204

CPC分类号： H01M10/6556 ,  C09J9/02 ,  H01M10/613 ,  H01M50/204

摘要： A battery pack including a tray and cell stacks is provided. Each of the cell stacks includes a housing and a cell array. The housing includes a body, a first end cover and a second end cover. The body includes a top wall, a bottom wall, a first side wall and a second side wall. The cell array is accommodated in the housing. A cooling channel is formed on at least one of the first side wall and the second side wall, and an output electrode connected to a tab of the cell array is disposed on the first end cover. All the output electrodes are disposed in a coplanar arrangement.

公开(公告)号：US20240170800A1

公开(公告)日：2024-05-23

申请号：US18499226

申请日：2023-11-01

申请人： AESC Japan Ltd.

发明人： Changjun Wu ,  Xin Cui ,  Zhuchen Yuan ,  Zhuolie Chen ,  Yafei He

IPC分类号： H01M50/30 ,  H01M50/117 ,  H01M50/143 ,  H01M50/15

CPC分类号： H01M50/394 ,  H01M50/117 ,  H01M50/143 ,  H01M50/15

摘要： A cover assembly, a battery and an electronic device are provided. The cover assembly includes a cover body, a boss, and a heat-resistant sheet. A pressure relief hole is provided on the cover body. The boss is disposed on the top surface of the cover body, and surrounds the outer periphery of the pressure relief hole. The boss encloses a first region communicated with the pressure relief hole, and together with the pressure relief hole constitute an accommodation space. The heat-resistant sheet is disposed in the accommodation space and at least partially covers the pressure relief hole.

公开(公告)号：US11961992B2

公开(公告)日：2024-04-16

申请号：US16645423

申请日：2018-09-06

申请人： AESC Japan Ltd.

发明人： Junpei Morita ,  Kazuya Mimura

IPC分类号： H01M4/131 ,  H01M4/48

CPC分类号： H01M4/131 ,  H01M4/483

摘要： An electrode includes a current collector, an active material layer, a first layer including first particles, and a second layer including second particles, wherein an average cross-sectional area of the first particles in a plane substantially parallel to the electrode surface is smaller than an average cross-sectional area of the second particles in a plane substantially parallel to the electrode surface.

公开(公告)号：US20240055594A1

公开(公告)日：2024-02-15

申请号：US18264634

申请日：2022-02-03

申请人： ENVISION AESC JAPAN LTD.

发明人： Manabu KASEDA

IPC分类号： H01M4/525 ,  H01M4/505

CPC分类号： H01M4/525 ,  H01M4/505 ,  H01M2004/028

摘要： A positive electrode (100) includes a first positive electrode active material layer (122) containing a positive electrode active material expressed by a general formula LixNiyCozM1-y-zO2 (where 0.80≤y≤0.93, and M denotes a metallic element containing at least one element out of Mn and Al). The length of the first positive electrode active material layer (122) in a longitudinal direction is equal to or greater than 300 mm and equal to or less than 740 mm.

公开(公告)号：US20240039091A1

公开(公告)日：2024-02-01

申请号：US18357652

申请日：2023-07-24

申请人： AESC JAPAN LTD.

发明人： Aika OOKA

IPC分类号： H01M50/15 ,  H01M50/103 ,  H01M50/174

CPC分类号： H01M50/15 ,  H01M50/103 ,  H01M50/182 ,  H01M10/0431

摘要： A battery cell includes a battery element, a front lid member covering one end portion of the battery element in a predetermined direction, and an exterior film at least partially wrapped around the predetermined direction of the battery element. The exterior film is rounded along the battery element in at least one corner of the battery element around the predetermined direction.

公开(公告)号：US20230395864A1

公开(公告)日：2023-12-07

申请号：US18455074

申请日：2023-08-24

申请人： AESC JAPAN LTD.

发明人： Kenji WATANABE

IPC分类号： H01M10/0568 ,  H01M4/04 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569

CPC分类号： H01M10/0568 ,  H01M4/0404 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M10/0569 ,  H01M2004/027

摘要： A non-aqueous electrolytic solution secondary battery including a positive electrode including a positive electrode active material capable of intercalating and deintercalating a lithium ion; a negative electrode including a negative electrode active material capable of intercalating and deintercalating a lithium ion; a non-aqueous electrolytic solution containing a lithium ion; and an outer package, wherein the positive electrode active material includes a lithium-containing composite oxide having a layered rock salt structure and represented by the following composition formula: LiNixCoyMnzO2, provided that 0.7≤x≤0.9, 0.05≤y≤0.2, 0.05≤z≤0.15, and x+y+z=1 are satisfied, and the battery is formed by using the non-aqueous electrolytic solution containing methylene methanedisulfonate and having a content thereof of 2.0% by mass or more and 5.0% by mass or less based on a solvent.

公开(公告)号：US20230387466A1

公开(公告)日：2023-11-30

申请号：US17988770

申请日：2022-11-17

申请人： AESC Japan Ltd.

发明人： Renhe Wang ,  Ziyuan Wang ,  Le Yu

IPC分类号： H01M10/0568 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505 ,  H01M4/58 ,  H01M4/587

CPC分类号： H01M10/0568 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/364 ,  H01M4/525 ,  H01M4/505 ,  H01M4/5825 ,  H01M4/587 ,  H01M2300/0037

摘要： An electrolyte, an electrochemical device thereof, and an electronic device thereof are provided. An electrolyte includes vinylene carbonate and a carboxylate-based compound. Based on a mass of the electrolyte, a mass percentage of the vinylene carbonate is A %, a mass percentage of the carboxylate-based compound is B %, and the electrolyte satisfies: a value of A/B ranges from 0.1 to 10, and a value of A+B ranges from 1.1 to 6. In the electrolyte provided by the disclosure, the film formation on the surface of the negative electrode is improved, and the internal resistance is optimized. In this way, the electrochemical device exhibits good cycle performance at high temperature and room temperature and favorable capacity performance at high temperature and achieves low internal resistance.

公开(公告)号：US20230223652A1

公开(公告)日：2023-07-13

申请号：US18001038

申请日：2021-06-09

申请人： ENVISION AESC JAPAN LTD.

发明人： Makihiro OTOHATA

IPC分类号： H01M50/434 ,  H01M4/13 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/04 ,  H01M50/42

CPC分类号： H01M50/434 ,  H01M4/13 ,  H01M4/0404 ,  H01M4/622 ,  H01M10/0525 ,  H01M50/42 ,  H01M2004/027

摘要： There is provided a negative electrode (100) for a lithium ion secondary battery, in which a negative electrode active material layer (120) containing at least a negative electrode active material and a binder is formed on a current collector (110). An insulating layer (300) containing at least an insulating material and a binder is further provided on a surface of the negative electrode active material layer (120), the binder contained in the insulating layer (300) includes at least styrene-butadiene rubber and at least one selected from carboxymethyl cellulose and salts thereof, and the binder contained in the negative electrode active material layer (120) is at least one selected from polyacrylic acid and salts thereof.