Patents by Inventor Baojian Zhu
Baojian Zhu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11784311Abstract: This application discloses a secondary battery and an apparatus containing the secondary battery. The secondary battery comprises a positive electrode plate comprising a positive active material and a negative electrode plate comprising a negative active material. The negative active material comprises a first material and a second material, the first material comprises artificial graphite, and the second material comprises natural graphite. The positive active material comprises one or more of layered lithium transition metal oxides and modified compounds thereof, and a smoothness L of a surface of the negative electrode film away from the negative electrode current collector satisfies: 40?L?50; or the positive active material comprises one or more of lithium-containing phosphates with olivine structure and modified compounds thereof, and a smoothness L of a surface of the negative electrode film away from the negative electrode current collector satisfies: 45?L?55.Type: GrantFiled: December 8, 2021Date of Patent: October 10, 2023Assignee: Contemporary Amperex Technology Co., LimitedInventors: Jianjun Ma, Rui Shen, Libing He, Lei Chen, Baojian Zhu
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Patent number: 11469409Abstract: The present invention provides a negative electrode plate and a battery. The negative electrode plate comprises a negative current collector and a negative film that is provided on at least one surface of the negative current collector and comprises a negative active material. The negative film meets the follow relations: 6.0?PD×Dv50?32.0 and 0.2?PD/Dn10?12.0. The negative electrode plate of the present invention has excellent dynamic performance, and the battery of the present invention has both excellent dynamic performance and long cycle life.Type: GrantFiled: April 15, 2021Date of Patent: October 11, 2022Assignee: Contemporary Amperex Technology Co., LimitedInventors: Jiazheng Wang, Yuliang Shen, Meng Kang, Libing He, Baojian Zhu, Lei Chen
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Publication number: 20220115751Abstract: A secondary battery. The secondary battery includes an electrode assembly, a housing, a top cover assembly, a current collecting member, and an insulation member. The electrode assembly is accommodated in the housing and includes a body portion and a first tab. The first tab extends from one end of the body portion in a transverse direction. The top cover assembly includes a top cover plate and a first electrode terminal disposed on the top cover plate. The top cover plate is connected to the housing, and the first electrode terminal is connected to the current collecting member. The insulation member is disposed between the body portion and the current collecting member. The insulation member includes a through gap. The first tab passes.Type: ApplicationFiled: December 21, 2021Publication date: April 14, 2022Applicant: Contemporary Amperex Technology Co., LimitedInventors: Xichen WEI, Baojian ZHU, Shoujiang XU, Lei CHEN
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Publication number: 20220102723Abstract: This application discloses a secondary battery and an apparatus containing the secondary battery. The secondary battery comprises a positive electrode plate comprising a positive active material and a negative electrode plate comprising a negative active material. The negative active material comprises a first material and a second material, the first material comprises artificial graphite, and the second material comprises natural graphite. The positive active material comprises one or more of layered lithium transition metal oxides and modified compounds thereof, and a smoothness L of a surface of the negative electrode film away from the negative electrode current collector satisfies: 40?L?50; or the positive active material comprises one or more of lithium-containing phosphates with olivine structure and modified compounds thereof, and a smoothness L of a surface of the negative electrode film away from the negative electrode current collector satisfies: 45?L?55.Type: ApplicationFiled: December 8, 2021Publication date: March 31, 2022Applicant: Contemporary Amperex Technology Co. LimitedInventors: Jianjun MA, Rui Shen, Libing He, Lei Chen, Baojian Zhu
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Publication number: 20220102724Abstract: This application discloses a secondary battery including a positive electrode plate and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode film disposed on a surface of the positive electrode current collector and comprising a positive active material, the negative electrode plate comprises a negative electrode current collector and a negative electrode film disposed on a surface of the negative electrode current collector and comprising a negative active material. The positive active material comprises one or more of layered lithium transition metal oxides and modified compounds thereof, and a resistance R of the negative electrode plate satisfies: 6.0 m??R?12.0 m?; or the positive active material comprises one or more of lithium-containing phosphates with olivine structure and modified compounds thereof, and a resistance R of the negative electrode plate satisfies: 3.0 m??R?7.0 m?.Type: ApplicationFiled: December 10, 2021Publication date: March 31, 2022Applicant: Contemporary Amperex Technology Co., Ltd.Inventors: Jianjun MA, Rui Shen, Libing He, Baojian Zhu, Lei Chen
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Publication number: 20210234148Abstract: The present invention provides a negative electrode plate and a battery. The negative electrode plate comprises a negative current collector and a negative film that is provided on at least one surface of the negative current collector and comprises a negative active material. The negative film meets the follow relations: 6.0?PD×Dv50?32.0 and 0.2?PD/Dn10?12.0. The negative electrode plate of the present invention has excellent dynamic performance, and the battery of the present invention has both excellent dynamic performance and long cycle life.Type: ApplicationFiled: April 15, 2021Publication date: July 29, 2021Applicant: Contemporary Amperex Technology Co., LimitedInventors: Jiazheng WANG, Yuliang SHEN, Meng KANG, Libing HE, Baojian ZHU, Lei CHEN
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Publication number: 20210043912Abstract: This application relates to a top pressing plate, a secondary battery, and a method for manufacturing a secondary battery. The top pressing plate is used for a secondary battery, the secondary battery including a top cover sheet, an insulating separator and an electrode assembly, the electrode assembly including a main body portion and electrode tabs connected to the main body portion, the electrode tabs each including a welding end portion, the top pressing plate includes: a first surface and a second surface provided oppositely in a thickness direction of the top pressing plate and an accommodating groove recessed from the second surface toward the first surface, the top pressing plate can be provided between the insulating separator and the main body portion, the first surface faces the main body portion, the second surface faces the insulating separator, and the accommodating groove is disposed to accommodate the welding end portion.Type: ApplicationFiled: October 15, 2019Publication date: February 11, 2021Applicant: Contemporary Amperex Technology Co., LimitedInventors: Baojian ZHU, Lei CHEN, Shoujiang XU, Chunyan FENG
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Publication number: 20200411897Abstract: The disclosure relates to a top compression plate, a secondary battery and a method for manufacturing a secondary battery. The secondary battery includes an electrode assembly, a cap plate, an electrode terminal disposed on the cap plate and an insulating member, the electrode assembly includes a main body and a tab connected to the main body, and the insulating member includes a connecting protrusion extending toward the main body. The top compression plate includes: a first surface and a second surface oppositely disposed along a thickness direction of the top compression plate, and a mounting hole extending from the second surface toward the first surface, the top compression plate is disposed between the insulating member and the main body, the first surface faces the main body, the connecting protrusion may mate with the mounting hole, and a top end surface of the connecting protrusion does not exceed the first surface.Type: ApplicationFiled: October 15, 2019Publication date: December 31, 2020Applicant: Contemporary Amperex Technology Co., LimitedInventors: Baojian ZHU, Lei CHEN, Shoujiang XU, Chunyan FENG
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Patent number: 10340497Abstract: A secondary battery comprises a cell. The cell includes a positive electrode plate having a positive current collector and a negative electrode plate having a negative current collector. The secondary battery further includes: a first positive electrode tab and a second positive electrode tab, one end of the first positive electrode tab is fixed on and electrically connects with the positive current collector, the other end of the first positive electrode tab extends to the outside of the cell; and/or, a first negative electrode tab and a second negative electrode tab, one end of the first negative electrode tab is fixed on and electrically connects with the negative current collector, the other end of the first negative electrode tab extends to the outside of the cell, one end of the second negative electrode tab is fixed on and electrically connects with the other end of the first negative electrode tab.Type: GrantFiled: January 6, 2017Date of Patent: July 2, 2019Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Baojian Zhu, Hong Yang, Qiao Zeng, Jiacai Cai, Shoujiang Xu
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Publication number: 20170207438Abstract: A secondary battery comprises a cell. The cell includes a positive electrode plate having a positive current collector and a negative electrode plate having a negative current collector. The secondary battery further includes: a first positive electrode tab and a second positive electrode tab, one end of the first positive electrode tab is fixed on and electrically connects with the positive current collector, the other end of the first positive electrode tab extends to the outside of the cell; and/or, a first negative electrode tab and a second negative electrode tab, one end of the first negative electrode tab is fixed on and electrically connects with the negative current collector, the other end of the first negative electrode tab extends to the outside of the cell, one end of the second negative electrode tab is fixed on and electrically connects with the other end of the first negative electrode tab.Type: ApplicationFiled: January 6, 2017Publication date: July 20, 2017Inventors: Baojian Zhu, Hong Yang, Qiao Zeng, Jiacai Cai, Shoujiang Xu