Patents by Inventor Yang Leng

Yang Leng 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).

  • Patent number: 12136884
    Abstract: The present disclosure provides a power converter including a first capacitor, a second capacitor, and a power module. The first capacitor and the second capacitor are connected in series. The power module is electrically connected to the first capacitor and the second capacitor and includes a circuit board, an absorption capacitor, a primary switch circuit, a magnetic component, and a secondary circuit. The absorption capacitor, the primary switch circuit, the magnetic component and the secondary circuit are disposed on the circuit board. A primary winding and a secondary winding of the magnetic component are electrically connected to the primary switch circuit and the secondary circuit respectively.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: November 5, 2024
    Assignee: Delta Electronics, Inc.
    Inventors: Yang Leng, Zhongwang Yang, Yankai Liu, Wenhua Li, Wei Tang
  • Publication number: 20240347256
    Abstract: A magnetic device includes a magnetic core assembly, a primary winding, a first secondary winding, at least one second secondary winding and an auxiliary winding. The magnetic core assembly includes a first magnetic leg, a second magnetic leg and a third magnetic leg. The primary winding is wound around the second magnetic leg. The at least one secondary winding is wound around the second magnetic leg or the third magnetic leg. The auxiliary winding is electrically connected with an auxiliary inductor and wound around at least one magnetic leg. The primary winding is electrically connected with a first switch circuit, and the at least one secondary winding is electrically connected with a second switch circuit, wherein when switches of the first switch circuit turn off and switches of the second switch circuit turn on, an superposed AC voltage coupled by the auxiliary winding is applied on the auxiliary inductor.
    Type: Application
    Filed: June 25, 2024
    Publication date: October 17, 2024
    Inventors: Da Jin, Yang Leng, Zhongwang Yang, Yahong Xiong
  • Patent number: 12062479
    Abstract: A magnetic device includes a magnetic core assembly, a primary winding, a first secondary winding and a second secondary winding. The magnetic core assembly includes a first magnetic cover, a second magnetic cover, a first magnetic leg, a second magnetic leg, a third magnetic leg and a fourth magnetic leg. The primary winding is wound around the first magnetic leg and the third magnetic leg. A first terminal of the first secondary winding is disposed between the first magnetic leg and the second magnetic leg. A second terminal of the first secondary winding is disposed between the third magnetic leg and the fourth magnetic leg. A first terminal of the second secondary winding is disposed between the first magnetic leg and the fourth magnetic leg. A second terminal of the second secondary winding is disposed between the second magnetic leg and the third magnetic leg.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: August 13, 2024
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Da Jin, Yang Leng, Zhongwang Yang, Yahong Xiong
  • Patent number: 12009138
    Abstract: A magnetic device includes a magnetic core assembly, a first secondary winding, a second secondary winding and a primary winding. The magnetic core assembly includes a first magnetic leg, a second magnetic leg and a third magnetic leg. The first to third magnetic legs are arranged in sequence. The second magnetic leg is disposed between the first magnetic leg and the third magnetic leg. The first secondary winding is disposed between the first magnetic leg and the second magnetic leg, and the second secondary winding is disposed between the second magnetic leg and the third magnetic leg. A first terminal of the primary winding is disposed between the first magnetic leg and the second magnetic leg, and a second terminal of the primary winding is disposed between the second magnetic leg and the third magnetic leg.
    Type: Grant
    Filed: November 15, 2022
    Date of Patent: June 11, 2024
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Da Jin, Yang Leng, Zhongwang Yang, Yahong Xiong
  • Patent number: 11824457
    Abstract: A power conversion module is disclosed. The power conversion module includes a power conversion module includes a circuit board and a first basic power unit. The first basic power unit is disposed on the circuit board and includes a magnetic device, a primary switch circuit, a first secondary rectifying circuit and a first positive output terminal pin. The primary switch circuit, the first secondary rectifying circuit, the magnetic device and the first positive output terminal pin are sequentially arranged on the circuit board along a first direction.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: November 21, 2023
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Da Jin, Yang Leng, Litao Qian, Zhongwang Yang
  • Publication number: 20230223186
    Abstract: A magnetic device includes a magnetic core assembly and a winding assembly. The magnetic core assembly includes a first outer magnetic leg, a second outer magnetic leg, a first inner magnetic leg group and a second inner magnetic leg group. A first channel is formed between the first inner magnetic leg group and the first outer magnetic leg. A second channel is formed between the second inner magnetic leg group and the first inner magnetic leg group. A third channel is formed between the second inner magnetic leg group and the second outer magnetic leg. The winding assembly includes four coupled windings. The first terminals of the four coupled windings are located near a first lateral side of the magnetic core assembly. The second terminals of the four coupled windings are located near a second lateral side of the magnetic core assembly.
    Type: Application
    Filed: January 3, 2023
    Publication date: July 13, 2023
    Inventors: Da Jin, Yahong Xiong, Yang Leng, Yankai Liu, Zhongwang Yang
  • Patent number: 11646668
    Abstract: A power converter includes N power conversion units. Each power conversion unit includes a main switching circuit, a transformer, a synchronous rectifier circuit, an input signal terminal and a signal processor. A primary winding of the transformer is connected with the main switching circuit. The synchronous rectifier circuit is connected with a secondary winding of the transformer. The input signal terminal receives a first PWM control signal. The signal processor generates first and second PWM driving signals to drive the main switching circuit according to the first PWM control signal, and a phase difference between the first and second PWM driving signals is (180±?) degree. The signal processor generates third and fourth PWM driving signals to drive the synchronous rectifier circuit according to the first PWM control signal, and a phase difference between the third and fourth PWM driving signals is (180±?) degree.
    Type: Grant
    Filed: September 23, 2021
    Date of Patent: May 9, 2023
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Yahong Xiong, Yang Leng, Junguo Cui, Zhongwang Yang
  • Publication number: 20230075167
    Abstract: A magnetic device includes a magnetic core assembly, a first secondary winding, a second secondary winding and a primary winding. The magnetic core assembly includes a first magnetic leg, a second magnetic leg and a third magnetic leg. The first to third magnetic legs are arranged in sequence. The second magnetic leg is disposed between the first magnetic leg and the third magnetic leg. The first secondary winding is disposed between the first magnetic leg and the second magnetic leg, and the second secondary winding is disposed between the second magnetic leg and the third magnetic leg. A first terminal of the primary winding is disposed between the first magnetic leg and the second magnetic leg, and a second terminal of the primary winding is disposed between the second magnetic leg and the third magnetic leg.
    Type: Application
    Filed: November 15, 2022
    Publication date: March 9, 2023
    Inventors: Da Jin, Yang Leng, Zhongwang Yang, Yahong Xiong
  • Publication number: 20220352826
    Abstract: The present disclosure provides a power converter including a first capacitor, a second capacitor, and a power module. The first capacitor and the second capacitor are connected in series. The power module is electrically connected to the first capacitor and the second capacitor and includes a circuit board, an absorption capacitor, a primary switch circuit, a magnetic component, and a secondary circuit. The absorption capacitor, the primary switch circuit, the magnetic component and the secondary circuit are disposed on the circuit board. A primary winding and a secondary winding of the magnetic component are electrically connected to the primary switch circuit and the secondary circuit respectively.
    Type: Application
    Filed: April 22, 2022
    Publication date: November 3, 2022
    Inventors: Yang Leng, Zhongwang Yang, Yankai Liu, Wenhua Li, Wei Tang
  • Publication number: 20220319759
    Abstract: A magnetic device includes a magnetic core assembly, a primary winding, a first secondary winding and a second secondary winding. The magnetic core assembly includes a first magnetic cover, a second magnetic cover, a first magnetic leg, a second magnetic leg, a third magnetic leg and a fourth magnetic leg. The primary winding is wound around the first magnetic leg and the third magnetic leg. A first terminal of the first secondary winding is disposed between the first magnetic leg and the second magnetic leg. A second terminal of the first secondary winding is disposed between the third magnetic leg and the fourth magnetic leg. A first terminal of the second secondary winding is disposed between the first magnetic leg and the fourth magnetic leg. A second terminal of the second secondary winding is disposed between the second magnetic leg and the third magnetic leg.
    Type: Application
    Filed: March 30, 2022
    Publication date: October 6, 2022
    Inventors: Da Jin, Yang Leng, Zhongwang Yang, Yahong Xiong
  • Publication number: 20220321017
    Abstract: A power conversion module is disclosed. The power conversion module includes a power conversion module includes a circuit board and a first basic power unit. The first basic power unit is disposed on the circuit board and includes a magnetic device, a primary switch circuit, a first secondary rectifying circuit and a first positive output terminal pin. The primary switch circuit, the first secondary rectifying circuit, the magnetic device and the first positive output terminal pin are sequentially arranged on the circuit board along a first direction.
    Type: Application
    Filed: March 30, 2022
    Publication date: October 6, 2022
    Inventors: Da Jin, Yang Leng, Litao Qian, Zhongwang Yang
  • Publication number: 20220131471
    Abstract: A power converter includes N power conversion units. Each power conversion unit includes a main switching circuit, a transformer, a synchronous rectifier circuit, an input signal terminal and a signal processor. A primary winding of the transformer is connected with the main switching circuit. The synchronous rectifier circuit is connected with a secondary winding of the transformer. The input signal terminal receives a first PWM control signal. The signal processor generates first and second PWM driving signals to drive the main switching circuit according to the first PWM control signal, and a phase difference between the first and second PWM driving signals is (180±?) degree. The signal processor generates third and fourth PWM driving signals to drive the synchronous rectifier circuit according to the first PWM control signal, and a phase difference between the third and fourth PWM driving signals is (180±?) degree.
    Type: Application
    Filed: September 23, 2021
    Publication date: April 28, 2022
    Inventors: Yahong Xiong, Yang Leng, Junguo Cui, Zhongwang Yang
  • Publication number: 20210272737
    Abstract: A magnetic assembly includes a magnetic core, four primary windings and four secondary windings. The magnetic core includes four lateral legs. The four primary windings and the corresponding secondary windings are magnetically coupled with each other, and the four primary windings and the corresponding secondary windings are wound on the corresponding lateral legs. The winding directions of the four secondary windings on the corresponding lateral legs are identical. A phase difference between a magnetic flux flowing through a specified lateral leg of the four lateral legs and a magnetic flux flowing through an adjacent lateral leg is any value in the range between 150 degrees and 210 degrees. A phase difference between the magnetic flux flowing through the specified lateral leg and the magnetic flux flowing through another adjacent lateral leg is any value in the range between 60 degrees and 120 degrees.
    Type: Application
    Filed: February 4, 2021
    Publication date: September 2, 2021
    Inventors: Da Jin, Yang Leng, Zhongwang Yang, Qinghua Su
  • Patent number: 5698088
    Abstract: A graphite intercalation compound is disclosed in which formic acid (HCOOH) is the intercalate. The GIC may be formed by an electrochemical process using formic acid solution as both the electrolyte and as the intercalate source. The resulting formic acid GIC may be expanded by rapid heating to produce an expanded graphite product that in turn may be mechanically processed into flexible graphite.
    Type: Grant
    Filed: July 8, 1996
    Date of Patent: December 16, 1997
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Feiyu Kang, Yang Leng, Tong-Yi Zhang
  • Patent number: 5503717
    Abstract: A ZnCl.sub.2 -graphite intercalation compound is synthesised by an electrochemical process in an aqueous solution. Flexible graphite is manufactured by exfoliating and then compressing the ZnCl.sub.2 -graphite intercalation compound into a sheet form. This processing is suitable for mass production. As no sulphuric acid is used in this method, the method reduces environmental pollution and corrosion during use.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: April 2, 1996
    Inventors: Feiyu Kang, Yang Leng, Tong-Yi Zhang, Yiu-Wing Mai