Patents by Inventor Xinghua Tao
Xinghua Tao 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: 10991927Abstract: 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.Type: GrantFiled: October 29, 2018Date of Patent: April 27, 2021Assignee: Ningde Amperex Technology LimitedInventors: Wei Cui, Xinghua Tao, Cong Cheng
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Patent number: 10964987Abstract: 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.Type: GrantFiled: June 20, 2018Date of Patent: March 30, 2021Assignee: Ningde Amperex Technology LimitedInventors: Jianjian Yi, Xinzhi Zhang, Zengbin Wei, Xinghua Tao
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Patent number: 10964927Abstract: 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.Type: GrantFiled: November 28, 2018Date of Patent: March 30, 2021Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Kebing Guo, Dongyang Guo, Gengjin Kong, Xinghua Tao
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Publication number: 20210020981Abstract: 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 ?m to 3 ?m, Dv50 is in a range of 0.2 ?m to 5 ?m, and Dv90 is in a range of 1 ?m to 10 ?m. 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.Type: ApplicationFiled: October 1, 2020Publication date: January 21, 2021Inventors: Jianjian YI, Xinzhi ZHANG, Zengbin WEI, Xinghua TAO
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Patent number: 10833355Abstract: 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.Type: GrantFiled: June 5, 2018Date of Patent: November 10, 2020Assignee: Ningde Amperex Technology LimitedInventors: Jianjian Yi, Xinzhi Zhang, Zengbin Wei, Xinghua Tao
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Publication number: 20190393467Abstract: 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.Type: ApplicationFiled: November 28, 2018Publication date: December 26, 2019Inventors: Kebing GUO, Dongyang GUO, Gengjin KONG, Xinghua TAO
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Publication number: 20190393513Abstract: 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.Type: ApplicationFiled: January 3, 2019Publication date: December 26, 2019Inventors: Tingling Lei, Zhifang Dai, Xinghua Tao, Hai Long
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Publication number: 20190379020Abstract: 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.Type: ApplicationFiled: August 21, 2019Publication date: December 12, 2019Inventors: Shitong CHEN, Xinghua TAO, Shengwu ZHANG, Wenqiang CHENG
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Publication number: 20190319300Abstract: 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.Type: ApplicationFiled: June 5, 2018Publication date: October 17, 2019Inventors: Jianjian Yi, Xinzhi Zhang, Zengbin Wei, Xinghua Tao
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Publication number: 20190319244Abstract: 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.Type: ApplicationFiled: October 29, 2018Publication date: October 17, 2019Inventors: Wei Cui, Xinghua Tao, Cong Cheng
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Publication number: 20190319243Abstract: 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.Type: ApplicationFiled: June 20, 2018Publication date: October 17, 2019Inventors: Jianjian Yi, Xinzhi Zhang, Zengbin Wei, Xinghua Tao
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Publication number: 20190267596Abstract: 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.Type: ApplicationFiled: January 28, 2019Publication date: August 29, 2019Inventors: Dongyang Guo, Gengjin Kong, Kebing Guo, Xinghua Tao
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Publication number: 20190267595Abstract: The present disclosure provides a separator and a lithium ion battery. The separator includes a porous substrate; and a porous layer disposed on at least one surface of the porous substrate. The porous layer includes inorganic particles and a binder, and an iron content in the porous layer is not more than 2100 ppm.Type: ApplicationFiled: November 1, 2018Publication date: August 29, 2019Inventors: Gengjin KONG, Dongyang Guo, Xinghua Tao
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Publication number: 20190267609Abstract: 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.Type: ApplicationFiled: February 21, 2019Publication date: August 29, 2019Inventors: Yajie Li, Changchuan Shi, Xinghua Tao, Zhanzhao Fang, Chao Gao
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Publication number: 20190153265Abstract: 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.Type: ApplicationFiled: November 20, 2018Publication date: May 23, 2019Inventors: Zhifang Dai, Luran Zhang, Hai Long, Xinghua Tao
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Publication number: 20190153266Abstract: 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.Type: ApplicationFiled: November 20, 2018Publication date: May 23, 2019Inventors: Zhifang DAI, Luran Zhang, Hai Long, Xinghua Tao
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Patent number: 9806330Abstract: The present disclosure provides a lithium-rich electrode plate of a lithium-ion battery and a preparation method thereof. The preparation method of the lithium-rich electrode plate of the lithium-ion battery comprises steps of: (1) in a protective gas environment, melting a lithium ingot to obtain a melting lithium; (2) in a vacuum environment, heating and drying ceramic particles to obtain dried and anhydrous ceramic particles; (3) in a protective gas environment, adding the dried and anhydrous ceramic particles into the melting lithium, stirring to make them uniformly mixed to obtain a modified melting lithium; (4) in a protective gas environment, uniformly coating the modified melting lithium on a surface of an electrode plate to be lithium rich to form a lithium-rich layer, which is followed by cooling to room temperature to obtain a lithium-rich electrode plate of a lithium-ion battery. The lithium-rich electrode plate is prepared according to the preparation method.Type: GrantFiled: June 2, 2015Date of Patent: October 31, 2017Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Baiqing Li, Shengwu Zhang, Xinghua Tao, Baiqing Zhang
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Publication number: 20170288192Abstract: 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.Type: ApplicationFiled: March 31, 2017Publication date: October 5, 2017Inventors: Shitong Chen, Xinghua Tao, Shengwu Zhang, Wenqiang Cheng
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Publication number: 20150357628Abstract: The present disclosure provides a lithium-rich electrode plate of a lithium-ion battery and a preparation method thereof. The preparation method of the lithium-rich electrode plate of the lithium-ion battery comprises steps of: (1) in a protective gas environment, melting a lithium ingot to obtain a melting lithium; (2) in a vacuum environment, heating and drying ceramic particles to obtain dried and anhydrous ceramic particles; (3) in a protective gas environment, adding the dried and anhydrous ceramic particles into the melting lithium, stirring to make them uniformly mixed to obtain a modified melting lithium; (4) in a protective gas environment, uniformly coating the modified melting lithium on a surface of an electrode plate to be lithium rich to form a lithium-rich layer, which is followed by cooling to room temperature to obtain a lithium-rich electrode plate of a lithium-ion battery. The lithium-rich electrode plate is prepared according to the preparation method.Type: ApplicationFiled: June 2, 2015Publication date: December 10, 2015Inventors: Baiqing LI, Shengwu Zhang, Xinghua Tao, Baiqing Zhang
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Publication number: 20130236765Abstract: The invention pertains to the technical field of a polymer Li-ion battery, in particular to a polymer Li-ion battery separator, comprising porous substrate, wherein at least one surface of the porous substrate is coated with an inorganic coating and an organic coating; the organic coating, shaped like an island and/or linear distribution, is coated on the surface of the porous substrate and/or the inorganic matter coating.Type: ApplicationFiled: March 5, 2013Publication date: September 12, 2013Applicants: DONGGUAN AMPEREX TECHNOLOGY LIMITED, NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Shengwu ZHANG, Xinghua TAO, Dewen ZHOU, Rui XU, Baiqing ZHANG