Patents by Inventor Wenhui Xu

Wenhui Xu 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: 8836277
    Abstract: Circuit and method for heating a battery. The circuit includes the battery including parasitic damping and current storage components. A first switch unit and first charge storage component are parts of a battery discharging circuit. A second current storage component is in series with the first charge storage component and a one-way semiconductor component. The one-way semiconductor component and second current storage component are in parallel with the first switch unit. The first charge storage component, second current storage component, and the one-way semiconductor component are parts of a battery charging circuit. A second switch unit is in parallel to the first charge storage component and the second current storage component. The second switch unit and the second current storage component are parts of a voltage regulation and polarity inversion circuit for the first charge storage component. The circuit heats the battery by discharging and charging the battery.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: September 16, 2014
    Assignee: BYD Company Limited
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Patent number: 8836288
    Abstract: Circuit and method for heating a battery. The heating circuit includes a switch unit, a switching control module, a one-way semiconductor component, a damping component and a transformer. The switching control module is electrically connected with the switch unit. The battery, the damping component, a first winding of the transformer, and the switch unit are connected in a first loop with each other to constitute a battery discharging circuit. The battery, the damping component, a second winding of the transformer, and the one-way semiconductor component are connected in a second loop with each other to constitute a battery charging circuit.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: September 16, 2014
    Assignee: BYD Company Limited
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Patent number: 8829856
    Abstract: Circuit and method for heating first and second batteries. The heating circuit includes first and second switch units, first and second damping components, first and second current storage components, switching control module and energy storage component. The first battery, first damping and current storage components, energy storage component and first switch unit are connected in a first loop to constitute a first charging/discharging circuit. The second battery, second damping and current storage components, energy storage component and second switch unit are connected in a second loop to constitute a second charging/discharging circuit. When the energy storage component is charged/discharged, current in the second charging/discharging circuit is reverse to current in the first charging/discharging circuit.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: September 9, 2014
    Assignee: BYD Company Limited
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Patent number: 8823317
    Abstract: Circuit and method for heating first and second batteries. The heating circuit includes first and second switch units, first and second damping components, first and second current storage components, switching control module and charge storage component. The first battery, first damping and current storage components, first switch unit and charge storage component are connected in a first loop to form a first charging/discharging circuit. The second battery, second damping and current storage components, charge storage component and second switch unit are connected in a second loop to form a second charging/discharging circuit. When the charge storage component is charged or discharges, charging/discharging current in the second charging/discharging circuit is reverse to that in the first charging/discharging circuit.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: September 2, 2014
    Assignee: BYD Company Limited
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Patent number: 8816647
    Abstract: According to some embodiments of the present invention, a battery heating circuit includes a switch unit, a switching control module, a damping component, an energy storage circuit, and an energy superposition unit, wherein: the energy storage circuit is connected with the battery and includes a current storage component and a charge storage component; the damping component, the switch unit, the current storage component, and the charge storage component are connected in series; the switching control module is connected with the switch unit, and configured to control ON/OFF of the switch unit, so as to control the energy flowing between the battery and the energy storage circuit.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: August 26, 2014
    Assignee: BYD Company Limited
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Patent number: 8816634
    Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 1, a switching control module 100, a damping component R1, and an energy storage circuit, wherein: the energy storage circuit is connected with the battery and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit 1, the current storage component L1 and the charge storage component C1 are connected in series; the switching control module 100 is connected with the switch unit 1 and is configured to control ON/OFF of the switch unit 1, so as to control the energy flowing between the battery and the energy storage circuit. For example, the heating circuit can improve the charge/discharge performance of the battery, improve safety when the battery is heated, and effectively protect the battery.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: August 26, 2014
    Assignee: BYD Company Limited
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Patent number: 8680817
    Abstract: According to some embodiments of the present invention, a battery heating circuit includes a switch unit, a switching control module, a damping component, an energy storage circuit, and an energy superposition unit, wherein: the energy storage circuit is connected with the battery and includes a current storage component and a charge storage component; the damping component, the switch unit, the current storage component, and the charge storage component are connected in series; the switching control module is connected with the switch unit, and configured to control ON/OFF of the switch unit, so as to control the energy flowing between the battery and the energy storage circuit.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: March 25, 2014
    Assignee: BYD Company Limited
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Patent number: 8559725
    Abstract: A disclosed method for extracting a raster image of a page from a portable electronic document that includes (a) acquiring commands and resources of the raster image of the page by analyzing a format of the portable electronic document, (b) extracting first and second candidate raster images by processing the commands and the resources of the raster image of the page, (c) integrating the first and second candidate raster images as an integrated candidate raster image provided that the first and second candidate raster images are linked together, and (d) removing a pseudo-raster image from the integrated candidate raster image.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: October 15, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Cheng Du, Wenhui Xu, Fumihiro Hasegawa, Koichi Inoue
  • Patent number: 8452097
    Abstract: Disclosed are an apparatus and a method for extracting circumscribed rectangles of one or more characters in a transplantable electronic document. The apparatus comprises a command and resource extraction device for extracting text-segment-related commands and original font resources; a division device for dividing the original font resources into fonts; a font replacement device for seeking fonts, and obtaining font resources after font replacement; a measurement information extraction device for extracting character shape measurement information of the characters; and a calculation device for calculating the circumscribed rectangles of the characters.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: May 28, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Wenhui Xu, Cheng Du, Fumihiro Hasegawa, Koichi Inoue
  • Publication number: 20130031471
    Abstract: Disclosed are an electronic document rasterizing method and an electronic document rasterizing device. The method comprises a thumbnail image rasterizing step of calculating an initial resolution for rasterizing a thumbnail image of the electronic document page, and then carrying out rasterization with regard to the thumbnail image of the electronic document page; an electronic document page dividing step of dividing, based on a designated resolution and the size of a display area, the electronic document page into plural regional segments; a region-of-interest determining step of determining, in response of designation of a position of interest, a current region of interest in the plural regional segments; and a region-of-interest rasterizing step of determining at least one document segment belonging to the current region of interest, and then rasterizing the current region of interest by rasterizing the document segment belonging to the current region of interest based on the designated resolution.
    Type: Application
    Filed: May 10, 2012
    Publication date: January 31, 2013
    Applicant: RICOH COMPANY, LTD.
    Inventors: Wenhui Xu, Cheng Du, Fumihiro Hasegawa, Koichi Inoue
  • Publication number: 20120306432
    Abstract: Certain embodiments of the present invention disclose a battery heating circuit, wherein: the battery comprises a battery E1 and a battery E2. For example, the heating circuit comprises: a first charging/discharging circuit, which is connected with the battery E1, and comprises a damping component R1, a current storage component L1, a first switch unit 1 and a charge storage component C, all of which are connected in series to each other; and a second charging/discharging circuit, which is connected to the battery E2, and comprises a damping component R2, a current storage component L2, a second switch unit 2 and the charge storage component C, all of which are connected in series with each other.
    Type: Application
    Filed: July 10, 2012
    Publication date: December 6, 2012
    Applicant: BYD COMPANY LIMITED
    Inventors: Wenhui XU, Yaochuan HAN, Wei FENG, Qinyao YANG, Wenjin XIA, Shibin MA
  • Publication number: 20120299551
    Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 10, a switching control module 100, a one-way semiconductor component D10, a damping component R, and a transformer T, wherein: the switching control module 100 is electrically connected with the switch unit 10; the battery, the damping component R, the first winding of the transformer T, and the switch unit 10 are connected in series with each other to constitute a battery discharging circuit; the battery, the damping component R, the second winding of the transformer T, and the one-way semiconductor component D10 are connected in series with each other to constitute a battery charging circuit. The transformer in certain embodiments of the present invention serves as an energy storage component, and has a current limiting function.
    Type: Application
    Filed: July 9, 2012
    Publication date: November 29, 2012
    Applicant: BYD COMPANY LIMITED
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Publication number: 20120280658
    Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 1, a switching control module 100, a damping component R1, an energy storage circuit, and a freewheeling circuit 20, wherein: the energy storage circuit is connected with the battery, and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit 1, the current storage component L1, and the charge storage component C1 are connected in series; the switching control module 100 is connected with the switch unit 1, and is configured to control ON/OFF of the switch unit 1, so that the energy can flow back-and-forth between the battery and the energy storage circuit when the switch unit 1 switches on, and amplitude of the current flowing from the energy storage circuit to the battery can be controlled.
    Type: Application
    Filed: July 3, 2012
    Publication date: November 8, 2012
    Applicant: BYD COMPANY LIMITED
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Publication number: 20120280659
    Abstract: According to certain embodiments, a battery heating circuit is provided, comprising a first switch unit 11, a second switch unit 12, a third switch unit 13, a fourth switch unit 14, a switching control module 100, a damping component R1, a current storage component L1, and a charge storage component C1; the damping component R1 and the current storage component L1 are configured to connect with the battery in series to form a branch; the first switch unit 11 and the second switch unit 12 are connected in series with each other and then connected in parallel with the branch; the third switch unit 13 and the fourth switch unit 14 are connected in series with each other and then connected in parallel with the branch.
    Type: Application
    Filed: June 1, 2012
    Publication date: November 8, 2012
    Applicant: BYD COMPANCY LIMITED
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma, Xianyin Li
  • Publication number: 20120279951
    Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a plurality of switch units 1, a switching control module 100, a damping component R1, an energy storage circuit, and a polarity inversion unit 101, wherein: the energy storage circuit is connected with the battery, and comprises a current storage component L1 and a plurality of charge storage components C1; the plurality of charge storage components C1 are connected with the plurality of switch units 1 in series in one-to-one correspondence to form a plurality of branches; the plurality of branches is connected in parallel with each other and then connected with the current storage component L1 and damping component R1 in series; the switching control module 100 is connected with the switch units 1, and is configured to control ON/OFF of the switch units 1.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 8, 2012
    Applicant: BYD COMPANY LIMITED
    Inventors: Wenhui XU, Yaochuan HAN, Wei FENG, Qinyao YANG, Wenjin XIA, Shibin MA, Xianyin LI
  • Publication number: 20120161711
    Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit (10), a switching control module (100), a one-way semiconductor component D10, a damping component R, and a transformer (T), wherein: the switching control module (100) is electrically connected with the switch unit (10); the battery, damping component R, first winding of the transformer (T), and switch unit (10) are connected in series with each other to constitute a battery discharging circuit; the battery, damping component R, second winding of the transformer (T), and one-way semiconductor component D10 are connected in series with each other to constitute a battery charging circuit. The transformer in certain embodiments of the present invention serves as an energy storage component, and has current limiting function.
    Type: Application
    Filed: July 22, 2011
    Publication date: June 28, 2012
    Applicant: BYD COMPANY LIMITED
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Publication number: 20120141045
    Abstract: A method and apparatus for reducing artifacts during image processing is described. In some embodiments, the method includes examining an input image comprising at least one source region, for each target region in an output image, identifying a portion of the at least one source region based on similarity data, defining an omnidirectional cut boundary and determining intensity values for the each target region and at least one pixel between the each target region and the omnidirectional cut boundary.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 7, 2012
    Applicant: SONY CORPORATION
    Inventors: Soo Hyun BAE, Wenhui XU
  • Publication number: 20120032642
    Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit (1), a switching control module (100), a damping component R1, an energy storage circuit, and an energy superposition unit, the energy storage circuit is configured to connect with the battery to form a loop, and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit (1), the current storage component L1, and the charge storage component C1 are connected in series; the switching control module (100) is connected with the switch unit (1), and is configured to control ON/OFF of the switch unit (1), so as to control the energy flowing between the battery and the energy storage circuit; the energy superposition unit is connected with the energy storage circuit, and is configured to superpose the energy in the energy storage circuit with the energy in the battery when the switch unit (1) switches on and then switches off; the switching control modul
    Type: Application
    Filed: July 20, 2011
    Publication date: February 9, 2012
    Applicant: BYD COMPANY LIMITED
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Xianyin Li
  • Publication number: 20120031890
    Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit (1), a switching control module (100), a damping component R1, an energy storage circuit, a freewheeling circuit (20), and an energy superposition unit, the energy storage circuit is configured to connect with the battery to form a loop, and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit (1), the current storage component L1, and the charge storage component C1 are connected in series; the switching control module (100) is connected with the switch unit (1), and is configured to control ON/OFF of the switch unit (1), so as to control the energy flowing between the battery and the energy storage circuit; the energy superposition unit is connected with the energy storage circuit, and is configured to superpose the energy in the energy storage circuit with the energy in the battery when the switch unit (1) switches on and then switches off
    Type: Application
    Filed: July 21, 2011
    Publication date: February 9, 2012
    Applicant: BYD COMPANY LIMITED
    Inventors: Yaochuan Han, Wenhui Xu, Wei Feng, Qinyao Yang, Wenjin Xia, Xianyin Li
  • Publication number: 20120025775
    Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a switch unit 1, a switching control module 100, a damping component R1, an energy storage circuit, an energy limiting circuit, and an energy control unit for energy storage circuit, wherein: the energy storage circuit is connected with the battery and comprises a current storage component L1 and a charge storage component C1; the damping component R1, the switch unit 1, the current storage component L1, and the charge storage component C1 are connected in series; the switching control module 100 is connected with the switch unit 1, and is configured to control ON/OFF of the switch unit 1, so that the energy can flow back-and-forth between the battery and the energy storage circuit when the switch unit 1 switches on.
    Type: Application
    Filed: June 22, 2011
    Publication date: February 2, 2012
    Applicant: BYD COMPANY LIMITED
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma