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公开(公告)号：US20220328845A1
公开(公告)日：2022-10-13
申请号：US17709660
申请日：2022-03-31
Applicant: Ningde Amperex Technology Limited
Inventor： Xiaoping LIN , Maohua CHEN , Yuansen XIE
IPC: H01M4/78 , H01M10/0525 , H01M4/66
Abstract: A negative electrode plate includes a three-dimensional framework structure. The three-dimensional framework structure includes fibers and rigid particles. Mohs hardness of the rigid particles is greater than or equal to 2, and an elastic modulus of the rigid particles is greater than or equal to 40 Gpa. The three-dimensional framework structure can mitigate volume expansion of the negative active material during cycling. On the other hand, the rigid particles help to stabilize the three-dimensional framework structure and can serve as a lithium wetting material to induce lithium to deposit inside the three-dimensional framework, thereby reducing the generation of lithium dendrites and improving safety performance and cycle performance of the formed electrochemical device.
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公开(公告)号：US20220271281A1
公开(公告)日：2022-08-25
申请号：US17742715
申请日：2022-05-12
Applicant: Ningde Amperex Technology Limited
Inventor： Qunchao LIAO , Hang CUI , Yuansen XIE
Abstract: An anode material includes silicon-based particles and graphite particles, wherein the average sphericity degree of the graphite particles is A, the average sphericity degree of the silicon-based particles is B, and A and B meet: 0
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33.发明申请公开(公告)号：US20220224141A1
公开(公告)日：2022-07-14
申请号：US17708766
申请日：2022-03-30
Applicant: Ningde Amperex Technology Limited
Inventor： Maohua CHEN , Hongmei WEI , Yuansen XIE
IPC: H02J7/00 , H01M10/44 , H01M10/052
Abstract: An electronic device, a charging method for an electrochemical device, a terminal and a storage medium. The electronic device includes an electrochemical device that satisfies the following features: in a first stage of a charging process, a state of charge (SOC) of the electrochemical device being less than or equal to X, 70%≤X
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公开(公告)号：US20220223871A1
公开(公告)日：2022-07-14
申请号：US17708495
申请日：2022-03-30
Applicant: Ningde Amperex Technology Limited
Inventor： Daguang LI , Maohua CHEN , Yuansen XIE , Peng DU
IPC: H01M4/62 , H01M10/052 , H01M4/04
Abstract: A protective material for a negative electrode of a lithium metal battery in this application includes a first protective layer and a second protective layer that are adjacent to each other. The first protective layer is contiguous to a lithium metal. Also, a method for manufacturing the protective material for a negative electrode of a lithium metal battery, and a method for manufacturing the negative electrode.
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公开(公告)号：US20220223835A1
公开(公告)日：2022-07-14
申请号：US17708508
申请日：2022-03-30
Applicant: Ningde Amperex Technology Limited
Inventor： Chao WANG , Qunchao LIAO , Hang CUI , Yuansen XIE
IPC: H01M4/131 , H01M4/62 , H01M4/485 , H01M4/66 , H01M10/0525
Abstract: A negative electrode includes a negative current collector and a negative active material layer. The negative active material layer includes a silicon-based material. A weight ratio R of the silicon-based material to a total weight of the negative active material layer and an absolute strength σ of the negative current collector satisfy the following formula: K=σ/(1.4×R+0.1), where K is a relation coefficient, and the relation coefficient is greater than or equal to 4,000 N/m. The electrochemical device can effectively mitigate XY expansion and deformation of the negative active material layer by using the foregoing negative electrode, thereby enhancing cycle performance and safety performance of the electrochemical device.
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Patent Agency Ranking
公开(公告)号：US20220216465A1
公开(公告)日：2022-07-07
申请号：US17700891
申请日：2022-03-22
Applicant: Ningde Amperex Technology Limited
Inventor： ChengBo ZHANG , Yuhao LU , Yuansen XIE
Abstract: A negative electrode material includes a silicon-containing material. The silicon-containing material includes at least one of pure silicon, silicon carbon, a silicon alloy, or a silicon oxide. A ratio B/A of a maximum value B in differentials dQ/dV with respect to 0.4V-0.55V to a maximum value A in differentials dQ/dV with respect to 0.2V-0.35V is 1.0-3.0 when the negative electrode material is electrified in a delithiation direction in a case of charging and discharging a battery that includes the negative electrode material used as a working electrode, metallic lithium used as a counter electrode, and an electrolyte containing a lithium-ion conductive substance, and in a case of plotting a relationship curve between a differential dQ/dV and a working electrode potential V, where the differential is obtained by differentiating a charge/discharge capacity Q with respect to the working electrode potential V.
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公开(公告)号：US20220158175A1
公开(公告)日：2022-05-19
申请号：US17585663
申请日：2022-01-27
Applicant: Ningde Amperex Technology Limited
Inventor： Chengbo ZHANG , Yuhao LU , Yuansen XIE
IPC: H01M4/36 , H01M4/485 , H01M10/0525
Abstract: An anode material includes silicon-based particles, the silicon-based particles include a silicon-containing substrate; at least a part of the surface of the silicon-containing substrate has an MySiOz layer; M includes Li, Mg, Ca, Sr, Ba, Al, Ti, Zn, or any combination thereof; and 0
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公开(公告)号：US20250002356A1
公开(公告)日：2025-01-02
申请号：US18757936
申请日：2024-06-28
Applicant: Ningde Amperex Technology Limited
Inventor： Wenlong SHAO , Zheng YI , Fujin TAN , Yuansen XIE
IPC: C01B32/318 , C01B32/168 , C01B32/336 , H01M4/02 , H01M4/36 , H01M4/38 , H01M4/587 , H01M4/62
Abstract: A porous carbon material includes carbon nanotubes and carbon material particles, a particle elastic modulus of the porous carbon material is Y1, and 0.9 Gpa≤Y1≤5.0 Gpa. The porous carbon material of this application has a high particle elastic modulus and a high powder conductivity. When a silicon-carbon material prepared using the porous carbon material in this application as a skeleton is used in an electrochemical apparatus, the silicon-carbon material can have a high particle elastic modulus and powder conductivity, improving the electrochemical performance of the electrochemical apparatus such as the long cycling performance and rate performance.
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公开(公告)号：US20240290959A1
公开(公告)日：2024-08-29
申请号：US18649030
申请日：2024-04-29
Applicant: Ningde Amperex Technology Limited
Inventor： Jia TANG , Pengyang FENG , Jiali DONG , Yuansen XIE
CPC classification number: H01M4/366 , H01M4/133 , H01M4/1393 , H01M4/525 , H01M4/623 , H01M2004/021 , H01M2004/027 , H01M2004/028
Abstract: An anode including a current collector and an anode active material layer disposed on the current collector are provided. The anode active material layer includes first oriented particles having a first tilt angle θ1 inclined with respect to the direction parallel to the current collector, and second oriented particles having a second tilt angle θ2 inclined with respect to the direction parallel to the current collector. The first tilt angle θ1 and the second tilt angle θ2 are different and both not greater than 70°.
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公开(公告)号：US20240014390A1
公开(公告)日：2024-01-11
申请号：US18175929
申请日：2023-02-28
Applicant: Ningde Amperex Technology Limited
Inventor： Yafei ZHANG , Chenxi JIANG , Hongming YU , Yuansen XIE
CPC classification number: H01M4/48 , H01M4/134 , H01M4/625 , H01M10/0525 , H01G11/22 , H01G11/52 , H01G11/70 , H01M2004/027
Abstract: An electrochemical apparatus includes a positive electrode plate, a negative electrode plate, and a separator disposed between the positive electrode plate and the negative electrode plate, where the negative electrode plate includes a negative electrode current collector and a negative electrode active substance layer disposed on the negative electrode current collector, where the electrochemical apparatus has a first capacity a in the unit of mAh, the first capacity a is greater than 0, and the first capacity a represents a capacity when a battery that is prepared using the negative electrode plate and a lithium plate as a counter electrode of the negative electrode plate is charged to 2.0 V after the electrochemical apparatus has been discharged from a 100% state of charge (SOC) to 2.5 V.
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