Patents by Inventor Qing feng Yuan

Qing feng Yuan 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).

  • Lithium ion battery having desirable safety performance
    Patent number: 9614211
    Abstract: Provided is a lithium ion battery including a battery can, a battery core received in the battery can, electrolyte filled in the battery can, and a battery cover assembled to the battery can. The battery can or the battery cover is provided with a pressure relief valve, and the pressure relief valve is coupled with a mesh cover defining a number of through holes therein. According to the present invention, when thermal runaway occurs to the lithium ion battery, the pressure relief valve breaks timely. Only gases and electrolyte vapor can pass through the mesh cover. Solid particles cannot pass through the mesh cover. Therefore, ignition of the flammable gases, the electrolyte vapor and the high temperature solid particles in the surrounding air afar from the pressure relief valve is avoided and the safety performance of the lithium ion battery can be improved remarkably.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: April 4, 2017
    Assignees: Ningde Amperex Technology Limited, Dongguan Amperex Technology Limited
    Inventors: Xiao bo Chen, Wei feng Chen, Qing feng Yuan, Ping hua Deng, Quan kun Li, Xue hui Wang, Wei zhong Wu
  • LITHIUM ION BATTERY HAVING DESIRABLE SAFETY PERFORMANCE
    Publication number: 20150079426
    Abstract: Provided is a lithium ion battery including a battery can, a battery core received in the battery can, electrolyte filled in the battery can, and a battery cover assembled to the battery can. The battery can or the battery cover is provided with a pressure relief valve, and the pressure relief valve is coupled with a mesh cover defining a number of through holes therein. According to the present invention, when thermal runaway occurs to the lithium ion battery, the pressure relief valve breaks timely. Only gases and electrolyte vapor can pass through the mesh cover. Solid particles cannot pass through the mesh cover. Therefore, ignition of the flammable gases, the electrolyte vapor and the high temperature solid particles in the surrounding air afar from the pressure relief valve is avoided and the safety performance of the lithium ion battery can be improved remarkably.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 19, 2015
    Inventors: Xiao bo Chen, Wei feng Chen, Qing feng Yuan, Ping hua Deng, Quan kun Li, Xue hui Wang, Wei zhong Wu