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公开(公告)号：US20230318073A1
公开(公告)日：2023-10-05
申请号：US18328719
申请日：2023-06-03
发明人： Qian LIU , Yonghuang YE , Haizu JIN , Quanguo LI , Xiaofu XU , Jianfu HE
IPC分类号： H01M10/647 , H01M50/209 , H01M50/51
CPC分类号： H01M10/647 , H01M50/209 , H01M50/51
摘要： A battery module includes one or more first battery cells and one or more second battery cells. A first number a of the one or more first battery cells is greater than or equal to a second number b of the one or more second battery cells. A first product X1 of a first volumetric energy density E1 and a first thickness T1 of each of the one or more first battery cells and a second product X2 of a second volumetric energy density E2 and a second thickness T2 of each of the one or more second battery cells satisfy. 0.35≤X1/X2≤18.
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公开(公告)号：US20230231390A1
公开(公告)日：2023-07-20
申请号：US18125143
申请日：2023-03-23
发明人： Xiaofu XU , Yonghuang YE , Xinyu ZHANG , Jianfu PAN , Qian LIU , Quanguo LI
CPC分类号： H02J7/0016 , H01M4/525 , H01M10/446 , H01M50/51 , H01M4/131 , H02J7/0048
摘要： A battery unit may comprise a first cell type and a second cell type electrically connected at least in series, wherein the first cell type may include N first cells, the second cell type may include M second cells, and N and M are positive integers; the first cell may have a discharge cell balance rate of CB1, the second cell may have a discharge cell balance rate of CB2, with 0.5≤CB1≤CB2≤1.4, and when the battery unit is charged to 95%-100% of the state of charge, the first cell may have a corresponding open-circuit voltage change rate of not greater than 0.005 V/% SOC, and the second cell type may have a corresponding open-circuit voltage change rate greater than that of the first cell.
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公开(公告)号：US20230231263A1
公开(公告)日：2023-07-20
申请号：US18054375
申请日：2022-11-10
发明人： Quanguo LI , Yonghuang YE , Haizu JIN , Chengdu LIANG , Qian LIU
IPC分类号： H01M50/358 , H01M10/6555 , H01M50/204
CPC分类号： H01M50/358 , H01M10/6555 , H01M50/204
摘要： This application provides a battery, an apparatus, and a manufacturing method and an apparatus of batteries, and relates to the field of energy storage technologies. The battery includes two battery cells and two discharge channels. The two battery cells each include a pressure relief mechanism, and the pressure relief mechanism is configured to be actuated when internal pressure or temperature in the battery cell reaches a threshold, to release the internal pressure. The two discharge channels are configured to collect emissions respectively from the corresponding battery cell when the pressure relief mechanism is actuated.
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4.发明公开公开(公告)号：US20230170484A1
公开(公告)日：2023-06-01
申请号：US18069187
申请日：2022-12-20
发明人： Quanguo LI , Qian LIU , Yonghuang YE , Jianfu HE , Fajun HUANG , Chunpeng YU , Dejun XIAO
IPC分类号： H01M4/62 , H01M10/0525 , H01M4/505 , H01M4/525
CPC分类号： H01M4/623 , H01M10/0525 , H01M4/505 , H01M4/525 , H01M4/625 , H01M2004/028
摘要： A positive electrode sheet includes a current collector, a resistance layer disposed on the current collector, and a positive electrode active material layer. The current collector includes a coating region and a non-coating region. The resistance layer includes a conductive agent and a first binder. The positive electrode active material layer includes a positive electrode active material, a conductive agent, and a second binder. A resistance of the resistance layer is greater than a resistance of the positive electrode active material layer. In a cross section of the positive electrode sheet, a projection of a part of the positive electrode active material layer on the current collector overlaps with a projection of the resistance layer on the current collector, and a projection of another part of the positive electrode active material layer on the current collector does not overlap with the projection of the resistance layer on the current collector.
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公开(公告)号：US20230016240A1
公开(公告)日：2023-01-19
申请号：US17942022
申请日：2022-09-09
发明人： Qian LIU , Xia Hu , Quanguo Li , Yonghuang Ye , Wei Li
摘要： This application provides a secondary battery and a preparation method thereof, and a battery module, battery pack, and apparatus containing a secondary battery. The secondary battery includes a positive electrode plate, the positive electrode plate includes a positive electrode current collector and a positive electrode film layer that is disposed on the positive electrode current collector and that includes a positive electrode active material, where the positive electrode active material includes a first material and a second material, the first material contains lithium transition metal oxide, the second material contains lithium transition metal phosphate, the lithium transition metal phosphate includes secondary particles formed by agglomeration of primary particles, and the second material has a lower discharge platform voltage than the first material with respect to a same type of counter electrode.
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公开(公告)号：US20240204172A1
公开(公告)日：2024-06-20
申请号：US18590277
申请日：2024-02-28
发明人： Jianfu PAN , Xiaofu XU , Xinyu ZHANG , Yibo SHANG , Qian LIU
CPC分类号： H01M4/364 , H01M4/131 , H01M4/136 , H01M4/366 , H01M4/525 , H01M4/5825 , H01M4/624 , H01M2004/021 , H01M2004/028
摘要： A positive electrode active material includes a low-to-medium nickel ternary material and a high-lattice-volume-change positive electrode material. The low-to-medium nickel ternary material has a mass ratio W1≥45% in the positive electrode active material. The high-lattice-volume-change positive electrode material satisfies: the thickness change rate of the positive electrode active substance layer is ≥2.6%, and the thickness change rate is (H1−H2)/H1, where H1 is the fully discharged thickness of the positive electrode active substance layer, and H2 is the fully charged thickness of the positive electrode active substance layer.
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7.发明公开公开(公告)号：US20240186479A1
公开(公告)日：2024-06-06
申请号：US18441607
申请日：2024-02-14
发明人： Dejun XIAO , Chunpeng YU , Jiahua CHEN , Quanguo LI , Jingxuan SUN , Qian LIU
IPC分类号： H01M4/04 , H01M4/02 , H01M10/647 , H01M50/209 , H01M50/249
CPC分类号： H01M4/0404 , H01M10/647 , H01M50/209 , H01M50/249 , H01M2004/021 , H01M2004/027
摘要： A negative electrode plate includes a negative electrode current collector and a negative electrode film layer located on at least one surface of the negative electrode current collector. The negative electrode film layer includes a middle coating region and edge coating regions located on two opposite sides of the middle coating region. Thickness A1 of the edge coating region in a fully-discharged state, thickness B1 of the edge coating region in a fully-charged state, thickness A2 of the middle coating region in the fully-discharged state, and thickness B2 of the middle coating region in the fully-charged state satisfy (B1−A1)/A1>(B2−A2)/A2.
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公开(公告)号：US20240097272A1
公开(公告)日：2024-03-21
申请号：US18518611
申请日：2023-11-24
发明人： Wanqiu MENG , Qian LIU , Yonghuang YE , Yulian ZHENG , Longfei XUE , Xiaoxi ZHANG
IPC分类号： H01M50/30
CPC分类号： H01M50/394
摘要： A gas-exhausting apparatus includes a gas-exhausting body and a gas-exhausting mechanism. The gas-exhausting mechanism includes a connecting assembly and a gas-ventilating member. The connecting assembly includes first and second connecting members. The first connecting member is provided with a first through hole for communicating with an inside of the battery cell. The second connecting member is provided with a second through hole for communicating with an outside of the battery cell. The first connecting member is configured to attach to a surface of the gas-ventilating member facing the inside of the battery cell. The second connecting member is configured to attach to a surface of the gas-ventilating member facing away from the inside of the battery cell. An orthographic projection of the first through hole on the gas-ventilating member and an orthographic projection of the second through hole on the gas-ventilating member are arranged to be staggered from each other.
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公开(公告)号：US20230307927A1
公开(公告)日：2023-09-28
申请号：US18324879
申请日：2023-05-26
发明人： Quanguo LI , Qian LIU , Yonghuang YE , Haizu JIN , Fajun HUANG , Xiaofu XU , Jun PENG
IPC分类号： H02J7/00 , H01M10/42 , G01R31/382 , G01R31/367 , G01R31/36
CPC分类号： H02J7/0019 , H01M10/4207 , G01R31/382 , G01R31/367 , G01R31/3648 , H01M10/425 , H01M2010/4271
摘要： A control method of a battery apparatus includes acquiring a state parameter of a first battery module of the battery apparatus, controlling the first battery module and a charging device to form a first charging loop in response to the state parameter of the first battery module being less than a preset threshold, and controlling the first battery module, a second battery module of the battery apparatus, and the charging device to be connected in series to form a second charging loop in response to the state parameter of the first battery module being greater than or equal to the preset threshold. A charging rate of the first charging loop is higher than a charging rate of the second charging loop.
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10.发明公开公开(公告)号：US20230211701A1
公开(公告)日：2023-07-06
申请号：US18182841
申请日：2023-03-13
发明人： Chenxu LUO , Jianfu HE , Qian LIU , Yu YAN , Yonghuang YE , Haizu JIN
IPC分类号： B60L58/16 , B60L58/18 , B60L58/24 , H01M10/44 , H01M50/572 , H01M50/155 , H01M4/485
CPC分类号： B60L58/16 , B60L58/18 , B60L58/24 , H01M10/44 , H01M50/572 , H01M50/155 , H01M4/485 , B60L2240/547 , B60L2240/545
摘要： A charging method for a secondary battery including a lithium-supplementing material. The method includes acquiring a first state of health of the secondary battery in response to the secondary battery being at a preset charging node, activating the lithium-supplementing material in response to the first state of health being less than or equal to a first threshold to supplement lithium for the secondary battery, performing a charging process on the secondary battery, determining a second state of health of the secondary battery based on a working parameter of the secondary battery in the charging process, and charging the secondary battery in response to the second state of health being greater than a second threshold.
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