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公开(公告)号：US20220200050A1
公开(公告)日：2022-06-23
申请号：US17560628
申请日：2021-12-23
Applicant: Ningde Amperex Technology Limited
Inventor： Chenxi Jiang , Yafei Zhang , Hongming Yu , Xinghua Tao
IPC: H01M10/0567 , H01M10/0525
Abstract: An electrochemical apparatus includes a positive electrode sheet including a positive electrode active material layer; a negative electrode sheet including a negative electrode active material layer; and a separator disposed between the positive electrode sheet and the negative electrode sheet. A mass ratio of fluorine to nitrogen on a surface layer of the positive electrode active material layer is A, a mass ratio of fluorine to nitrogen on a surface layer of the negative electrode active material layer is B, 3≤A≤50, and 30≤B≤300.
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公开(公告)号：US20190267596A1
公开(公告)日：2019-08-29
申请号：US16258708
申请日：2019-01-28
Applicant: Ningde Amperex Technology Limited
Inventor： Dongyang Guo , Gengjin Kong , Kebing Guo , Xinghua Tao
IPC: H01M2/16 , H01M10/0565 , H01M10/0525
Abstract: The present invention provides a separator and a lithium-ion battery. The separator comprises a porous substrate, and a first coating layer arranged on at least one surface of the porous substrate, wherein the first coating layer comprises an aromatic polyamide. An aramid coating layer is used in the present invention, the aromatic polyamide in the aramid coating layer swells or plasticizes under the action of a solvent and a lithium salt in the electrolyte at high temperature or normal temperature, to increase the elongation of the separator, while improving the safety performance of the lithium-ion battery by interaction between the aramid coating layer and the electrode active material or the binder.
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公开(公告)号：US20190153265A1
公开(公告)日：2019-05-23
申请号：US16197207
申请日：2018-11-20
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Zhifang Dai , Luran Zhang , Hai Long , Xinghua Tao
Abstract: A gummed paper comprises a first substrate having an uncovered region on an upper surface thereof; and a second substrate, in which in a thickness direction, a projection of the second substrate partially covers a projection of the first substrate, a dyne value of an upper surface of the second substrate is greater than or equal to 40 dyn/cm, and a dyne value of the uncovered region is less than the dyne value of the upper surface of the second substrate.
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公开(公告)号：US11870029B2
公开(公告)日：2024-01-09
申请号：US17204739
申请日：2021-03-17
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Wei Cui , Xinghua Tao , Cong Cheng
IPC: H01M50/414 , H01M10/0525 , H01M50/446 , H01M50/423 , H01M50/417 , H01M50/42 , H01M50/426 , H01M50/429 , H01M50/451 , H01M50/494 , H01M50/489 , H01M50/457
CPC classification number: H01M10/0525 , H01M50/414 , H01M50/417 , H01M50/42 , H01M50/423 , H01M50/426 , H01M50/429 , H01M50/446 , H01M50/451 , H01M50/457 , H01M50/489 , H01M50/494
Abstract: A separator includes: a first porous substrate; and a second porous substrate arranged on at least one surface of the first porous substrate; wherein the elongation at break of the second porous substrate is greater than the elongation at break of the first porous substrate in at least one of the machine and transverse directions of the separator. The separator has a high tensile strength and an elongation at break and good heat resistance, and may improve the safety performance of the energy storage device when the separator is applied to the energy storage device.
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公开(公告)号：US10964987B2
公开(公告)日：2021-03-30
申请号：US16013887
申请日：2018-06-20
Applicant: Ningde Amperex Technology Limited
Inventor： Jianjian Yi , Xinzhi Zhang , Zengbin Wei , Xinghua Tao
IPC: H01M2/16 , H01M2/14 , H01M50/449 , H01M10/0525 , H01M50/403 , H01M50/411 , H01M50/446
Abstract: The application provides a separator and an energy storage device. The separator comprises: a porous substrate; and a porous layer arranged on a surface of the porous substrate, wherein the porous layer comprises inorganic particles and a binder, and a ratio of Dv90 of the inorganic particles to the thickness of the porous layer is in a range from 0.3 to 3.0. Excellent adhesion exists between the separator and the electrode according to the present application, which ensures that the energy storage device has good safety performance. Moreover, the rate performance and cycle performance of the energy storage device can be greatly improved due to the existence of inorganic particles in the separator.
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Patent Agency Ranking
公开(公告)号：US10833355B2
公开(公告)日：2020-11-10
申请号：US16000764
申请日：2018-06-05
Applicant: Ningde Amperex Technology Limited
Inventor： Jianjian Yi , Xinzhi Zhang , Zengbin Wei , Xinghua Tao
Abstract: The application provides a porous film and a lithium-ion battery. The porous film according to the present application has excellent adhesion, and the pore structure of the porous film can still be well maintained after being immersed in the electrolyte, thereby reducing the probability of pore blockage of the porous film and allowing the lithium-ion battery to have high ionic conductivity. Therefore, the rate performance of the lithium-ion battery is greatly improved, and the lithium-ion battery provided has excellent rate performance and cycle performance.
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公开(公告)号：US20190319243A1
公开(公告)日：2019-10-17
申请号：US16013887
申请日：2018-06-20
Applicant: Ningde Amperex Technology Limited
Inventor： Jianjian Yi , Xinzhi Zhang , Zengbin Wei , Xinghua Tao
IPC: H01M2/16 , H01M10/0525 , H01M2/14
Abstract: The application provides a separator and an energy storage device. The separator comprises: a porous substrate; and a porous layer arranged on a surface of the porous substrate, wherein the porous layer comprises inorganic particles and a binder, and a ratio of Dv90 of the inorganic particles to the thickness of the porous layer is in a range from 0.3 to 3.0. Excellent adhesion exists between the separator and the electrode according to the present application, which ensures that the energy storage device has good safety performance. Moreover, the rate performance and cycle performance of the energy storage device can be greatly improved due to the existence of inorganic particles in the separator.
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公开(公告)号：US20210203037A1
公开(公告)日：2021-07-01
申请号：US17204740
申请日：2021-03-17
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Wei Cui , Xinghua Tao , Cong Cheng
IPC: H01M50/449 , H01M10/0525 , H01M50/411 , H01M50/446
Abstract: A separator includes: a first porous substrate; and a second porous substrate arranged on at least one surface of the first porous substrate; wherein the elongation at break of the second porous substrate is greater than the elongation at break of the first porous substrate in at least one of the machine and transverse directions of the separator. The separator has a high tensile strength and an elongation at break and good heat resistance, and may improve the safety performance of the energy storage device when the separator is applied to the energy storage device.
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公开(公告)号：US10991927B2
公开(公告)日：2021-04-27
申请号：US16174234
申请日：2018-10-29
Applicant: Ningde Amperex Technology Limited
Inventor： Wei Cui , Xinghua Tao , Cong Cheng
IPC: H01M2/16 , H01M10/0525
Abstract: The present application provides a separator and an energy storage device. The separator comprises: a first porous substrate; and a second porous substrate arranged on at least one surface of the first porous substrate; wherein the elongation at break of the second porous substrate is greater than the elongation at break of the first porous substrate in at least one of the machine and transverse directions of the separator. The separator has a high tensile strength and an elongation at break and good heat resistance, and may improve the safety performance of the energy storage device when the separator is applied to the energy storage device.
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公开(公告)号：US20190319300A1
公开(公告)日：2019-10-17
申请号：US16000764
申请日：2018-06-05
Applicant: Ningde Amperex Technology Limited
Inventor： Jianjian Yi , Xinzhi Zhang , Zengbin Wei , Xinghua Tao
Abstract: The application provides a porous film and a lithium-ion battery. The porous film according to the present application has excellent adhesion, and the pore structure of the porous film can still be well maintained after being immersed in the electrolyte, thereby reducing the probability of pore blockage of the porous film and allowing the lithium-ion battery to have high ionic conductivity. Therefore, the rate performance of the lithium-ion battery is greatly improved, and the lithium-ion battery provided has excellent rate performance and cycle performance.
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