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公开(公告)号：US20190267609A1
公开(公告)日：2019-08-29
申请号：US16282281
申请日：2019-02-21
Applicant: Ningde Amperex Technology Limited
Inventor： Yajie Li , Changchuan Shi , Xinghua Tao , Zhanzhao Fang , Chao Gao
IPC: H01M4/13 , H01M10/0525
Abstract: An embodiment of the present application provides a negative electrode and a lithium ion battery including the negative electrode, the negative electrode includes a negative electrode current collector, and a negative electrode active material layer arranged on the negative electrode current collector, wherein the negative electrode active material layer includes a negative electrode active material and a dispersant, and the dispersant includes lithium carboxymethylcellulose, wherein the mass ratio of the negative electrode active material to the dispersant being ≥18.74. The present application greatly reduces the DC resistance of the lithium ion battery and the charge transfer resistance at the interface without losing the energy density of the lithium ion battery, without affecting the cycle life of the lithium ion battery or causing cyclic expansion, which avoids the lithium precipitation phenomenon of the lithium ion battery during the cycle of charge and discharge.
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公开(公告)号：US20170288192A1
公开(公告)日：2017-10-05
申请号：US15475167
申请日：2017-03-31
Applicant: Ningde Amperex Technology Limited
Inventor： Shitong Chen , Xinghua Tao , Shengwu Zhang , Wenqiang Cheng
IPC: H01M2/16 , H01M10/0587 , H01M10/0525
CPC classification number: H01M2/1653 , H01M2/1646 , H01M2/1686 , H01M10/0525 , H01M10/0587
Abstract: The present invention provides a separator for a lithium ion battery. The separator includes a substrate, an inorganic coating on at least one surface of the substrate, and an organic coating on at least one surface of the inorganic coating, wherein the coating density of the organic coating is 0.1 mg/1540.25 mm2˜10 mg/1540.25 mm2. Compared with the prior art, the separator of the present invention can improve the deformation of the lithium ion battery and enhance the expansion force that the lithium ion battery can endure, thereby improving the cycle life of the lithium ion battery. In addition, the present invention also provides a lithium ion battery having the separator of the present invention.
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公开(公告)号：US11777133B2
公开(公告)日：2023-10-03
申请号：US17204740
申请日：2021-03-17
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Wei Cui , Xinghua Tao , Cong Cheng
IPC: H01M50/411 , H01M10/0525 , H01M50/446 , H01M50/414 , 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：US11575148B2
公开(公告)日：2023-02-07
申请号：US17061427
申请日：2020-10-01
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Jianjian Yi , Xinzhi Zhang , Zengbin Wei , Xinghua Tao
IPC: H01M10/0525 , H01M4/62 , H01M4/583 , H01M4/66 , H01M50/403 , H01M50/409 , H01M4/02
Abstract: A porous film, including a binder and inorganic particles. The porous film includes pores formed by the binder. The pores at least include a part of the inorganic particles. The inorganic particles have particle sizes that Dv10 is in a range of 0.015 μm to 3 μm, Dv50 is in a range of 0.2 μm to 5 μm, and Dv90 is in a range of 1 μm to 10 μm. Dv10 of the inorganic particles is less than Dv50 of the inorganic particles, and Dv50 of the inorganic particles is less than Dv90 of the inorganic particles, and the inorganic particles have particle sizes that the ratio of Dv90 to Dv10 is in a range of 2 to 100.
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公开(公告)号：US20210184315A1
公开(公告)日：2021-06-17
申请号：US17178843
申请日：2021-02-18
Applicant: Ningde Amperex Technology Limited
Inventor： Jianjian Yi , Xinzhi Zhang , Zengbin Wei , Xinghua Tao
IPC: H01M50/449 , H01M10/0525 , H01M50/403 , H01M50/411 , H01M50/446
Abstract: A separator includes a porous substrate, and a porous layer arranged on a surface of the porous substrate. 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：US20190393513A1
公开(公告)日：2019-12-26
申请号：US16239496
申请日：2019-01-03
Applicant: Ningde Amperex Technology Limited
Inventor： Tingling Lei , Zhifang Dai , Xinghua Tao , Hai Long
IPC: H01M4/78 , H01M10/0525 , H01M4/13 , H01M2/34
Abstract: The present application provides an electrode and a lithium ion battery. The electrode includes a current collector, at least one surface of the current collector is coated with a first coating layer of the first active material; wherein the first coating layer includes at least one through hole, and the at least one through hole has a cross-sectional area of 1% to 20% of a cross-sectional area of the first coating layer. In the present application, by forming a first coating layer including at least one through hole on at least one surface of the current collector, and by providing a second coating layer on the first coating layer, the second coating layer may be connected to the current collector through the through hole, and the safety performance of the lithium-ion battery is improved.
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公开(公告)号：US11459487B2
公开(公告)日：2022-10-04
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：US11104827B2
公开(公告)日：2021-08-31
申请号：US16197220
申请日：2018-11-20
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Zhifang Dai , Luran Zhang , Hai Long , Xinghua Tao
Abstract: A gummed paper includes: a first adhesive layer, configured to adhere to an object; a first substrate, adhered to a surface of the first adhesive layer opposite to the object; a second adhesive layer, adhered to a surface of the first substrate opposite to the first adhesive layer; a second substrate, adhered to a surface of the second adhesive layer opposite to the first substrate; and a plurality of foaming agent particles, distributed in the first adhesive layer.
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公开(公告)号：US10964927B2
公开(公告)日：2021-03-30
申请号：US16202346
申请日：2018-11-28
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Kebing Guo , Dongyang Guo , Gengjin Kong , Xinghua Tao
IPC: H01M2/16 , H01M10/0525
Abstract: The present application relates to a separator and an electrochemical device. The present application provides a separator comprising: a porous substrate and a porous layer, wherein the porous layer is disposed on a surface of the porous substrate and comprises inorganic particles and a binder. The porous substrate has an absolute plastic deformation rate in a first direction ranging from about 40% to about 1800%. By using the separator provided in the present application, the safety performance of lithium ion batteries is improved.
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公开(公告)号：US20190319244A1
公开(公告)日：2019-10-17
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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