Patents by Inventor Tangli Cheng

Tangli Cheng 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).

  • Type of lithium iron phosphate cathode active material and its method of synthesis
    Patent number: 8075861
    Abstract: This invention provides a type of lithium iron phosphate cathode active material and its method of synthesis. Said cathode active material contains the sintering product of lithium iron phosphate and a mixture. Said mixture comprises of two or more metal oxides where the metal elements are selected from groups II A, III A, IV A, V A, III B, IV B, or V B, and where the weight of one metal oxide is 0.5-20% of the weight of the other metal oxide. Greatly increased capacity can be achieved in rechargeable lithium-ion batteries using the lithium iron phosphate cathode active material provided by this invention.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: December 13, 2011
    Assignee: BYD Company Limited
    Inventors: Ye Tian, Tangli Cheng, Zhengang Gong
  • Composite compound with mixed crystalline structure
    Patent number: 8062559
    Abstract: A composite lithium compound having a mixed crystalline structure is provided. Such compound can be formed by heating a lithium, iron, phosphorous and carbon mixed compound with another metal compound together. The resulting mixed metal crystal can exhibit superior electrical property and is a better cathode material for lithium secondary batteries.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: November 22, 2011
    Assignee: BYD Company Limited
    Inventors: Ye Tian, Tangli Cheng, Xiaobing Xi
  • Composite compound with mixed crystalline structure
    Patent number: 8062560
    Abstract: A composite lithium compound having a mixed crystalline structure is provided. Such compound can be formed by heating lithium, iron, phosphorous and carbon sources with a lithium metal compound. The resulting mixed metal crystal can exhibit superior electrical property and is a better cathode material for lithium secondary batteries.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: November 22, 2011
    Assignee: BYD Company Limited
    Inventors: Xiaobing Xi, Tangli Cheng, Ye Tian, Lu Bai, Xiaoli Yin
  • Composite compound with mixed crystalline structure
    Patent number: 8057711
    Abstract: A composite lithium compound having a mixed crystalline structure is provided. Such compound can be formed by heating a lithium, iron, phosphorous and carbon mixed compound with another metal compound together. The resulting mixed metal crystal can exhibit superior electrical property and is a better cathode material for lithium secondary batteries.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: November 15, 2011
    Assignee: BYD Company Limited
    Inventors: Ye Tian, Tangli Cheng, Xiaobing Xi
  • Composite compound with mixed crystalline structure
    Patent number: 8052897
    Abstract: A composite lithium compound having a mixed crystalline structure is provided. Such compound can be formed by heating lithium, iron, phosphorous and carbon sources with a lithium metal compound. The resulting mixed metal crystal can exhibit superior electrical property and is a better cathode material for lithium secondary batteries.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: November 8, 2011
    Assignee: BYD Company Limited
    Inventors: Xiaobing Xi, Tangli Cheng, Ye Tian, Lu Bai, Xiaoli Yin
  • Composite compound with mixed crystalline structure
    Publication number: 20090220860
    Abstract: A composite lithium compound having a mixed crystalline structure is provided. Such compound can be formed by heating lithium, iron, phosphorous and carbon sources with a lithium metal compound. The resulting mixed metal crystal can exhibit superior electrical property and is a better cathode material for lithium secondary batteries.
    Type: Application
    Filed: December 9, 2008
    Publication date: September 3, 2009
    Applicant: BYD Company Limited
    Inventors: Xiaobing Xi, Tangli Cheng, Ye Tian, Lu Bai, Xiaoli Yin
  • Composite Compound With Mixed Crystalline Structure
    Publication number: 20090220858
    Abstract: Described is a composite lithium compound having a mixed crystalline structure. Such compound was formed by heating a lithium compound and a metal compound together. The resulting mixed metal crystal exhibits superior electrical property and is a better cathode material for lithium secondary batteries.
    Type: Application
    Filed: February 29, 2008
    Publication date: September 3, 2009
    Applicant: BYD COMPANY LIMITED
    Inventors: Tangli Cheng, Long He, Zhanfeng Jiang, Ye Tian, Junfeng Liu
  • Composite compound with mixed crystalline structure
    Publication number: 20090217512
    Abstract: A composite lithium compound having a mixed crystalline structure is provided. Such compound can be formed by heating a lithium, iron, phosphorous and carbon mixed compound with another metal compound together. The resulting mixed metal crystal can exhibit superior electrical property and is a better cathode material for lithium secondary batteries.
    Type: Application
    Filed: December 9, 2008
    Publication date: September 3, 2009
    Applicant: BYD Company Limited
    Inventors: Ye Tian, Tangli Cheng, Xiaobing Xi
  • Composite compound with mixed crystalline structure
    Publication number: 20090217513
    Abstract: A composite lithium compound having a mixed crystalline structure is provided. Such compound can be formed by heating lithium, iron, phosphorous and carbon sources with a lithium metal compound. The resulting mixed metal crystal can exhibit superior electrical property and is a better cathode material for lithium secondary batteries.
    Type: Application
    Filed: December 9, 2008
    Publication date: September 3, 2009
    Applicant: BYD Company Limited
    Inventors: Xiaobing Xi, Tangli Cheng, Ye Tian, Lu Bai, Xiaoli Yin
  • Composite compound with mixed crystalline structure
    Publication number: 20090220856
    Abstract: A composite lithium compound having a mixed crystalline structure is provided. Such compound can be formed by heating a lithium, iron, phosphorous and carbon mixed compound with another metal compound together. The resulting mixed metal crystal can exhibit superior electrical property and is a better cathode material for lithium secondary batteries.
    Type: Application
    Filed: December 9, 2008
    Publication date: September 3, 2009
    Applicant: BYD Company Limited
    Inventors: Ye Tian, Tangli Cheng, Xiaobing Xi
  • Type of Lithium Iron Phosphate Cathode Active Material and Its Method of Synthesis
    Publication number: 20090023069
    Abstract: This invention provides a type of lithium iron phosphate cathode active material and its method of synthesis. Said cathode active material contains the sintering product of lithium iron phosphate and a mixture. Said mixture comprises of two or more metal oxides where the metal elements are selected from groups II A, III A, IV A, V A, III B, IV B, or V B, and where the weight of one metal oxide is 0.5-20% of the weight of the other metal oxide. Greatly increased capacity can be achieved in rechargeable lithium-ion batteries using the lithium iron phosphate cathode active material provided by this invention.
    Type: Application
    Filed: April 15, 2008
    Publication date: January 22, 2009
    Applicant: BYD COMPANY LIMITED
    Inventors: Ye Tian, Tangli Cheng, Zhengang Gong