-
公开(公告)号:US11837698B2
公开(公告)日:2023-12-05
申请号:US16963330
申请日:2019-12-24
发明人: Hui Cui , Pengyang Feng , Shuirong Zhang , Jiali Dong
IPC分类号: H01M10/0567 , H01M4/36 , H01M4/62 , H01M10/0525 , H01M10/0569 , H01M4/02
CPC分类号: H01M10/0567 , H01M4/366 , H01M4/624 , H01M10/0525 , H01M10/0569 , H01M2004/021 , H01M2004/027 , H01M2300/0025
摘要: An electrochemical device, including a cathode, an anode and an electrolyte. The anode includes an anode current collector and an anode active material disposed on the anode current collector, the electrolyte includes fluoroethylene carbonate, and the electrochemical device meets the following relationship: 17.55≤K1−K2−1.63K32+11.27K3≤20.80, where K1 represents a specific surface area value of the unit mass of the anode active material (in m2/g), and 1.0≤K1≤2.0; K2 represents a content value of the fluoroethylene carbonate required by per Ah capacity (in g/Ah), and 0.05≤K2≤0.25; and K3 represents a weight value of the anode active material required by per Ah capacity (in g/Ah). The electrochemical device of the present application has improved kinetic performance and cycle performance.
-
62.
公开(公告)号:US20230361398A1
公开(公告)日:2023-11-09
申请号:US18129287
申请日:2023-03-31
发明人: Yanhong Shui
IPC分类号: H01M50/186 , H01M50/105 , H01M50/107 , H01M50/124 , H01M50/119 , H01M50/121
CPC分类号: H01M50/186 , H01M50/105 , H01M50/107 , H01M50/124 , H01M50/119 , H01M50/121
摘要: An electrochemical apparatus, including a package housing having a first package body and a second package body being integrally structured to form an accommodating portion and a sealing portion. A direction perpendicular to a surface of the sealing portion is a first direction. When viewed from the first direction, the accommodating portion includes a first edge extending a third direction and formed by the integral connection of the first package body and the second package body, and a second edge opposite to the first edge in a second direction. The sealing portion includes a third edge connected to the first edge. The first direction, the second direction, and the third direction are perpendicular to each other. In a second direction, a distance between the first edge and the second edge is d1, and a distance between the third edge and the second edge is d2, wherein d2≤d1.
-
公开(公告)号:US20230352661A1
公开(公告)日:2023-11-02
申请号:US18338589
申请日:2023-06-21
发明人: Xia Wu
CPC分类号: H01M4/364 , H01M4/525 , H01M4/131 , H01M2004/028
摘要: An electrochemical apparatus, including a positive electrode, where the positive electrode comprises a positive electrode active material layer; and when the electrochemical apparatus is fully discharged, the positive electrode active material layer comprises a lithium cobalt oxide with a P63mc structure and a lithium-containing metal oxide; and a ratio of a molar concentration of element Li to a molar concentration of other metal elements in the lithium-containing metal oxide is a, where 0
-
公开(公告)号:US20230261201A1
公开(公告)日:2023-08-17
申请号:US18194019
申请日:2023-03-31
发明人: Bing JIANG , Xuqi HUANG , Feng ZHOU , Tao LIU
CPC分类号: H01M4/623 , H01M4/625 , H01M4/131 , H01M2004/021
摘要: An electrochemical apparatus includes a negative electrode, where the negative electrode includes a current collector, a first coating, and a second coating. The second coating is provided on at least one surface of the current collector. The first coating is provided between the current collector and the second coating, and the first coating includes inorganic particles. A peeling force F between the first coating and the second coating satisfies 15 N≤F≤30 N. The first coating is provided between the current collector and the second coating of the negative electrode, and the first coating contains the inorganic particles, effectively enhancing adhesion between the current collector and the second coating, reducing the binder amount in the second coating, and increasing the proportion of a negative electrode active material in the negative electrode, thereby increasing the energy density of lithium-ion batteries.
-
公开(公告)号:US20230238519A1
公开(公告)日:2023-07-27
申请号:US18192908
申请日:2023-03-30
发明人: Yuanjie ZHANG
CPC分类号: H01M4/366 , H01M10/0525 , H01M4/622 , H01M4/5825 , H01M4/583 , H01M2004/028 , H01M2004/027 , H01M2004/021
摘要: An electrode plate includes a current collector and an active material layer provided on the current collector. The active material layer includes a first composite particle including a first active material particle and a first binder particle and a second composite particle including a second active material particle and a second binder particle. In a thickness direction of the active material layer, the first composite particle is closer to the current collector than the second composite particle. A quantity of the first active material particle contained in the first composite particle is greater than a quantity of the second active material particle contained in the second composite particle. Components of both the first binder particle and the second binder particle include polypropylene.
-
公开(公告)号:US20230231145A1
公开(公告)日:2023-07-20
申请号:US18191230
申请日:2023-03-28
发明人: Xiaoqian LIU
CPC分类号: H01M4/667 , H01M4/622 , H01M2004/028
摘要: An electrochemical apparatus includes a positive electrode. The positive electrode includes a current collector. The current collector includes a coated region provided with an active material, and an uncoated region, where the uncoated region is at least partially provided with an insulation layer, and the insulation layer includes a binder and inorganic particles. Based on a total mass of the insulation layer, a mass percentage of element aluminum in the insulation layer is 20% to 52%. An adhesion F between the insulation layer and the current collector is not less than 201 N/m. In the electrochemical apparatus in this application, the safety of the electrochemical apparatus is improved due to sufficient adhesion between the insulation layer and the current collector of the positive electrode.
-
公开(公告)号:US20230043554A1
公开(公告)日:2023-02-09
申请号:US17951375
申请日:2022-09-23
发明人: Chenxi JIANG , Yafei ZHANG , Yuansen XIE , Hongming YU
IPC分类号: H01M4/38 , H01M10/052
摘要: A negative electrode material includes silicon composite particles. The silicon composite particles include amorphous silicon particles and a buffer phase. The amorphous silicon particles are dispersed in the buffer phase. A non-uniformity of the amorphous silicon particles dispersed in the buffer phase is less than or equal to 30%. Also, an electronic device including the negative electrode material.
-
公开(公告)号:US20210408643A1
公开(公告)日:2021-12-30
申请号:US16959932
申请日:2020-06-11
发明人: Denglong HUANG , Xiaoming CHEN
IPC分类号: H01M50/516 , H01M50/509 , H01M50/519 , H01M50/522 , H01M50/529 , H01M50/547 , H01M50/533 , H01M50/534 , H01M50/204
摘要: The embodiment of the present application relates to a battery assembly and an electrochemical device. The battery assembly includes a first cell including a first tab and a second tab; and a second cell stacked with the first cell; the first tab includes a first portion and a second portion extending from an end of the first portion and approximately vertical to the first portion; the third tab includes a first portion and a second portion extending from an end of the first portion and approximately vertical to the first portion of the third tab; the second portions of the first tab and the second portion are stacked and electrically connected. The battery assembly of the present application can achieve connection of the soft-package battery with external device(s) through a simple structure.
-
公开(公告)号:US11181585B2
公开(公告)日:2021-11-23
申请号:US16550586
申请日:2019-08-26
发明人: Yuan Yao
IPC分类号: G01R15/00 , G01R31/3842 , G01R31/392
摘要: A method for detecting state of health of a battery of an electronic device is provided. An initial capacity of the battery is obtained when the battery is charged or discharged with a predetermined current and in a predetermined temperature, and a first State of Charge (SOC) value is calculated when the battery is discharged to a discharge cutoff voltage. An available capacity of the battery is calculated with the predetermined current and in the predetermined temperature based on a maximum capacity of the battery, the first State of Charge value, and a second State of Charge value, and a capacity fade is obtain based on a ratio of the available capacity and the initial capacity. Thus, the state of health is detected based on the capacity fade.
-
公开(公告)号:US11143708B2
公开(公告)日:2021-10-12
申请号:US16540333
申请日:2019-08-14
发明人: Yuan Yao
IPC分类号: G01R31/374 , H01M10/48 , G01R31/382
摘要: A method for correcting temperature of a rechargeable battery is provided. The temperature T of an adapter board of the rechargeable battery is detected by a sensor of an electronic device, and a temperature difference ΔTi between a cell and the adapter board is calculated during charging or discharging of the battery for a predetermined time period by acquiring a predetermined relationship mode. A cumulative temperature difference ΔT is calculated by accumulating the delta T value ΔTi, and a temperature value Tcell of the cell is calculated through the detected temperature T minus the accumulated temperature difference ΔT. Then, the electronic device can keep normal operation when taking the calculated temperature as the temperature of the cell.
-
-
-
-
-
-
-
-
-