-
公开(公告)号：US20250070143A1
公开(公告)日：2025-02-27
申请号：US18948493
申请日：2024-11-15
Inventor： Wenlong Bai , Yiyang Wu , Baozhen Wu , Yonghuang Ye , Xingyan You , Yuwen Wang , Wei Zheng , Kai Wu
Abstract: The present application provides a composite negative electrode active material and a preparation method therefor, a negative electrode plate comprising same, a secondary battery and a power consuming device. The composite negative electrode active material comprises a negative electrode active material substrate and a conductive polymer layer on the surface of the negative electrode active material substrate, wherein the cyclic voltammetry curve of the composite negative electrode active material has an oxidation peak within a range of 3.2 V-3.6 V and a reduction peak within a range of 2.1 V-2.6 V. The composite negative electrode active material provided by the present application can combine a low volume expansion, a high capacity per gram and a high initial coulombic efficiency, thus enabling a secondary battery to combine a low volume expansion, a high energy density and a long cycle life.
-
公开(公告)号：US20250070121A1
公开(公告)日：2025-02-27
申请号：US18946569
申请日：2024-11-13
Inventor： Xiaofu Xu , Chenxu Luo , Jianfu He , Jingxuan Sun , Qian Liu , Yonghuang Ye
Abstract: This application provides a positive electrode plate, a secondary battery, and an electrical device. The positive electrode plate may be a positive electrode plate applicable to a jelly-roll cell, and includes a waist region close to a waist and an end region far away from the waist. The waist region includes a first positive electrode film, and the end region includes a second positive electrode film. The positive electrode plate may be a positive electrode plate applicable to a stacked type cell, and includes a center region close to a center and an edge region far away from the center. The center region includes a first positive electrode film, and the edge region includes a second positive electrode film.
-
3.发明授权公开(公告)号：US12113246B2
公开(公告)日：2024-10-08
申请号：US18054698
申请日：2022-11-11
Inventor： Chengdu Liang , Xiaofu Xu , Yonghuang Ye , Haizu Jin , Wenwei Chen , Qian Liu
IPC: H01M50/578 , H01M50/209 , H01M50/581
CPC classification number: H01M50/578 , H01M50/209 , H01M50/581 , H01M2220/20
Abstract: A battery includes a protective box provided with a guiding channel and a plurality of battery cells in the protective box. The plurality of battery cells include a first battery cell and a second battery cell adjacent to each other. The first battery cell includes a pressure relief end provided with a pressure relief mechanism. The pressure relief mechanism is configured to actuate release of internal pressure of the first battery cell in response to the internal pressure or an internal temperature of the first battery cell reaching a threshold. The guiding channel is configured to guide emissions released from the pressure relief mechanism. The pressure relief end of the first battery cell is staggered with one end of the second battery cell that is close to the pressure relief end, in a direction leaving the guiding channel.
-
公开(公告)号：US20240429371A1
公开(公告)日：2024-12-26
申请号：US18829312
申请日：2024-09-10
Inventor： Xiaofu Xu , Yao Jiang , Yonghuang Ye , Qian Liu
IPC: H01M4/36 , H01M4/02 , H01M4/525 , H01M4/58 , H01M10/0525
Abstract: This application provides a positive electrode active material, a method for preparing a positive electrode active material, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The positive electrode active material includes a first positive electrode active material and a second positive electrode active material. The first positive electrode active material includes a compound LiNibCodMneM′fO2, and the second positive electrode active material includes a core, a first coating layer enveloping the core, and a second coating layer enveloping the first coating layer, where the core includes a compound Li1+xMn1−yAyP1−zRzO4, the first coating layer includes pyrophosphate MaP2O7 and phosphate XnPO4, and the second coating layer includes carbon.
-
公开(公告)号：US12176509B2
公开(公告)日：2024-12-24
申请号：US18053493
申请日：2022-11-08
Inventor： Quanguo Li , Yonghuang Ye , Chengdu Liang , Haizu Jin , Qian Liu , Xia Hu , Xiaofu Xu
IPC: H01M10/658 , H01M50/375
Abstract: This application provides a battery, an apparatus, a preparation method of battery, and a preparation apparatus of battery. The battery includes a first battery cell, a second battery cell, and a first thermal insulation member. The second battery cell is disposed adjacent to the first battery cell, an energy density of the second battery cell is less than that of the first battery cell, and the first thermal insulation member is disposed between the first battery cell and the second battery cell.
-
Patent Agency Ranking
6.发明授权公开(公告)号：US12176492B2
公开(公告)日：2024-12-24
申请号：US17935934
申请日：2022-09-27
Inventor： Tao Zhang , Jianfu He , Qian Liu , Yonghuang Ye
IPC: H01M10/0585 , H01M50/148 , H01M50/204 , H01M4/134 , H01M50/102
Abstract: An electrode assembly, secondary battery, battery module, battery pack and electrical device are provided. In some embodiments, the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator disposed between the positive electrode plate and the negative electrode plate, the positive electrode plate satisfies CAP1=CAP2, in which CAP1 represents capacity of the first positive electrode film layer in Ah, CAP2 represents capacity of the second positive electrode film layer in Ah, and the electrode assembly satisfies |R4/R3−R2/R1|>0, in which R1 represents resistance of the first positive electrode film layer in Ω, R2 represents resistance of the second positive electrode film layer in Ω, R3 represents resistance of the first negative electrode film layer in mΩ and R4 represents resistance of the second negative film layer in mΩ. The present applicant may extend the cycle life of the secondary battery.
-
公开(公告)号：US12218311B2
公开(公告)日：2025-02-04
申请号：US18366342
申请日：2023-08-07
Inventor： Quanguo Li , Yonghuang Ye , Qian Liu , Jianfu He , Fajun Huang , Chenhui Lin
Abstract: A secondary battery includes a positive electrode plate. that includes a positive current collector, a first positive active material layer distributed on one side of the positive current collector, and a second positive active material layer distributed on an other side of the positive current collector and a negative electrode plate that includes a negative current collector, a first negative active material layer distributed on one side of the negative current collector and opposite to the second positive active material layer, and a second negative active material layer distributed on an other side of the negative current collector. A resistance of the first positive active material layer is R1, a resistance of the second positive active material layer is R2, a resistance of the first negative active material layer is R3, a resistance of the second negative active material layer is R4.
-
公开(公告)号：US20250038363A1
公开(公告)日：2025-01-30
申请号：US18911280
申请日：2024-10-10
Inventor： Tao Zhang , Jianfu He , Qian Liu , Chen Cui , Xueyang Sun , Yonghuang Ye
IPC: H01M50/48 , H01M10/04 , H01M50/103 , H01M50/474
Abstract: The application discloses a battery cell, a battery, and an electrical device. The battery cell includes a shell, an electrode assembly and a buffering member. The shell includes two first side walls opposite to each other in a first direction, with a spacing of D1 between the two first side walls in the first direction. M electrode assemblies and N buffering members are accommodated inside the shell, where M and N are a positive integer greater than 0. In the fully charged state, the sum of the dimensions of M electrode assemblies along the first direction is D2. N buffering members and M electrode assemblies are stacked in the first direction. The buffering member is configured to be compressible, and the sum of the dimensions of N buffering members along the first direction in an uncompressed state is D3. D1, D2, and D3 meet: 0.9≤(D2+D3)/D1≤1.5.
-
公开(公告)号：US20240429384A1
公开(公告)日：2024-12-26
申请号：US18823720
申请日：2024-09-04
Inventor： Xiaofu Xu , Yao Jiang , Qian Liu , Yonghuang Ye
Abstract: This application provides a positive electrode active material and a preparation method thereof, a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The positive electrode active material contains a first positive electrode active material and a second positive electrode active material. The first positive electrode active material contains a compound LiNigCodMneM′fO2. The second positive electrode active material includes a core, a first coating layer enveloping the core, a second coating layer enveloping the first coating layer, and a third coating layer enveloping the second coating layer. In this application, the mixed use of the first positive electrode active material and the second positive electrode active material increases cycling capacity retention rate of the secondary battery, prolongs cycle life of the secondary battery, and improves safety of the secondary battery.
-
10.发明授权公开(公告)号：US12191475B2
公开(公告)日：2025-01-07
申请号：US17933855
申请日：2022-09-21
Inventor： Tao Zhang , Jianfu He , Qian Liu , Xueyang Sun , Yonghuang Ye
Abstract: An electrode assembly, secondary battery, battery module, battery pack and electrical device are provided. In some embodiments, the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator disposed between the positive electrode plate and the negative electrode plate, the positive electrode plate satisfies 0
-
-
-
-
-
-
-
-
-
Search Results
11
records
(took 0.027 seconds)
