Patents by Inventor Xiaofeng Shen

Xiaofeng Shen 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).

  • Publication number: 20210280513
    Abstract: The present disclosure provides a one-time programmable capacitive fuse bit, including an upper plate, the upper plate includes a plurality of fuses arranged side by side and spaced by an internal from each other, middle portions of two adjacent fuses are connected to each other; a connecting portion connected to the fuse is disposed above two ends and the middle portion of each of the plurality of fuses; the fuse bit further includes a lower plate corresponding to the two ends and the middle portion of the fuse, the lower plate is disposed below the fuse; the lower plate corresponding to the middle portion of the fuse is opposite to the connecting portion corresponding to the middle portion of the fuse; a hollow portion is disposed between the lower plate corresponding to the middle portion of the fuse and the lower plate corresponding to both ends of the fuse.
    Type: Application
    Filed: July 18, 2018
    Publication date: September 9, 2021
    Applicant: NO.24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
    Inventors: Mingyuan XU, Shuiqin YAO, Liang Li, Xiaofeng SHEN, Hongrui YANG, Jian'an WANG, Dongbing FU, Guangbing CHEN, Xingfa HUANG, Xi CHEN
  • Publication number: 20210211122
    Abstract: A duty cycle adjustment apparatus comprises a first edge extraction unit for extracting a rising edge of a first clock signal; a locking discrimination unit configured to output a control signal according to a comparison result between a discrimination voltage and a stabilized voltage, and select to connect the first clock signal or the clock output signal; an integration unit, configured to convert the feedback signal into the stabilized voltage, amplify the stabilized voltage to reach a reference voltage, and output a control voltage; a charge pump, configured to output a second clock signal according to the control voltage; a second edge extraction unit, configured to extract a falling edge of the second clock signal; and a phase discriminator, configured to compare a phase of the rising edge of the first clock signal with a phase of the falling edge of the second clock signal to generate the clock output signal.
    Type: Application
    Filed: July 21, 2017
    Publication date: July 8, 2021
    Applicant: NO.24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
    Inventors: Xi Chen, Liang Li, Guangbing Chen, Yuxin Wang, Dongbing Fu, Xingfa Huang, Mingyuan Xu, Xiaofeng Shen
  • Publication number: 20210184689
    Abstract: The present disclosure provides a circuit for generating a multi-phase clock having random disturbance added thereto. The circuit for generating a clock includes a main clock module, a random signal generation module and a buffer matrix switch module. The main clock module generates N multi-phase clock signals; and the buffer matrix switch module randomly switches, under the control of a random control signal output by the random signal generation module, transmission paths of the input N multi-phase clock signals, and outputs N multi-phase clock signals with random disturbance. In the present disclosure, the clock phase error is whitened by adding random disturbance. Only with a small loss of signal-to-noise ratio, the influence of a multi-phase clock phase error on the performance of a high-precision TI ADC can be eliminated in real time, and the influence of the fluctuation of a clock phase error can be tracked and eliminated.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 17, 2021
    Applicant: NO.24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
    Inventors: Jie PU, Gangyi HU, Dongbing FU, Zhengping ZHANG, Liang LI, Ting LI, Daiguo XU, Mingyuan XU, Xiaofeng SHEN, Xianjie WAN, Youhua WANG
  • Publication number: 20210135641
    Abstract: The present disclosure provides a clock driver circuit, including: an input stage, a double-ended to single-ended conversion stage and a driver output stage connected in sequence. The input stage includes two mutually loaded differential amplifiers and a common mode negative feedback loop. The differential amplifiers are connected to a differential clock signal for amplification to generate a common mode voltage. The common mode feedback circuit is connected to an output end of the differential amplifiers to stabilize the output amplitude of the common mode voltage. The double-ended to single-ended conversion stage converts a differential sine clock signal output by the double-ended common mode voltage into a single-ended square wave clock signal. The driver output stage includes a multi-stage cascaded push-pull phase inverter to improve the drive capability of the square wave clock signal.
    Type: Application
    Filed: July 25, 2018
    Publication date: May 6, 2021
    Applicant: NO.24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
    Inventors: Xiaofeng SHEN, Xingfa HUANG, Liang LI, Xi CHEN, Mingyuan XU, Jian'an WANG, Dongbing FU, Guangbing CHEN
  • Patent number: 10958181
    Abstract: A control method includes the following steps: when the DC-DC converter works every time, acquiring total time TC for controlling an H-bridge in a third mode and total time TD for controlling the H-bridge in a fourth mode, and acquiring set time Ti for controlling the H-bridge in the third mode and set time Tm for controlling the H-bridge in the fourth mode in each working cycle during a working process of the DC-DC converter; judging a relation between the TC and the TD; and selecting the mode for controlling the H-bridge when the DC-DC converter is started according to the relation between the total time TC and the total time TD, and alternately controlling the H-bridge according to the Ti and the Tm, the second switch transistor, the third switch transistor and the fourth switch transistor in the H-bridge to be relatively balanced.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: March 23, 2021
    Assignee: BYD COMPANY LIMITED
    Inventors: Ni Zhang, Xinghui Wang, Chao Wang, Xiaofeng Shen, Baihe Wu
  • Publication number: 20200346552
    Abstract: The present application discloses a battery equalization system, a vehicle, a battery equalization method, and a storage medium. The battery equalization system includes: a collection circuit; an equalization circuit; a controller; a charging branch circuit, connected to a charging device and a battery pack; and a first power supply branch circuit, connected to the charging device and the battery equalization system, and configured to supply power to the battery equalization system. When a state-of-charge of the battery pack is full and a cell in the battery pack needs enabling of equalization, the controller controls the charging branch circuit to disconnect, and controls the first power supply branch circuit to keep connected, so that an equalization module performs equalization processing on the cell that needs enabling of equalization.
    Type: Application
    Filed: August 31, 2018
    Publication date: November 5, 2020
    Applicant: BYD COMPANY LIMITED
    Inventors: Hongbin LUO, Chao WANG, Xiaofeng SHEN, Chengzhi WANG, Qiuyong ZENG
  • Publication number: 20200346558
    Abstract: A battery equalization method includes: obtaining a voltage value of a to-be-equalized cell in a battery pack; obtaining a reference voltage value required for equalization; determining a target equalization duration of the to-be-equalized cell according to a voltage value of the to-be-equalized cell, the reference voltage value, and a preset equalization duty cycle, where the equalization duty cycle is a ratio of an equalization period in a unit cycle to the unit cycle, and the unit cycle includes the equalization period and a sampling period; and controlling equalization of the to-be-equalized cell in the equalization period in the unit cycle according to the target equalization duration. According to this method, sampling is separated from equalization in a unit cycle, thereby ensuring accuracy of collected battery information, making the calculated equalization duration relatively accurate, and improving equalization effects of the battery pack.
    Type: Application
    Filed: August 31, 2018
    Publication date: November 5, 2020
    Applicant: BYD COMPANY LIMITED
    Inventors: Hongbin LUO, Chao WANG, Xiaofeng SHEN, Qiuyong ZENG, Yuanhong LIU, Xiang ZHANG
  • Publication number: 20200254902
    Abstract: The present application discloses a battery equalization system, a vehicle, a battery equalization method, and a storage medium. The battery equalization system includes: a collection circuit; an equalization circuit; a controller, connected to the collection circuit and the equalization circuit; and a power supply branch circuit, controlled by the controller to get connected to a power supply unit and the battery equalization system when a vehicle is in an OFF gear and a cell needs enabling of equalization, so that the power supply unit supplies power to the battery equalization system.
    Type: Application
    Filed: August 31, 2018
    Publication date: August 13, 2020
    Applicant: BYD COMPANY LIMITED
    Inventors: Hongbin LUO, Chao WANG, Xiaofeng SHEN, Qiuyong ZENG
  • Publication number: 20200083815
    Abstract: A control method includes the following steps: when the DC-DC converter works every time, acquiring total time TC for controlling an H-bridge in a third mode and total time TD for controlling the H-bridge in a fourth mode, and acquiring set time Ti for controlling the H-bridge in the third mode and set time Tm for controlling the H-bridge in the fourth mode in each working cycle during a working process of the DC-DC converter; judging a relation between the TC and the TD; and selecting the mode for controlling the H-bridge when the DC-DC converter is started according to the relation between the total time TC and the total time TD, and alternately controlling the H-bridge according to the Ti and the Tm, the second switch tube, the third switch tube and the fourth switch tube in the H-bridge to be relatively balanced.
    Type: Application
    Filed: December 1, 2017
    Publication date: March 12, 2020
    Applicant: BYD COMPANY LIMITED
    Inventors: Ni ZHANG, Xinghui WANG, Chao WANG, Xiaofeng SHEN, Baihe WU
  • Patent number: 10291245
    Abstract: The present invention provides a device and method for correcting error estimation of an analog-to-digital converter.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: May 14, 2019
    Assignee: NO. 24 RESEARCH INSTITUTE OF CHINA ELECTRONIC TECHNOLOGY
    Inventors: Jie Pu, Gangyi Hu, Xiaofeng Shen, Xueliang Xu, Dongbing Fu, Ruitao Zhang, Youhua Wang, Yuxin Wang, Guangbing Chen, Ruzhang Li
  • Publication number: 20180358976
    Abstract: A method for an analog-to-digital converter correcting error estimation includes: according to a correction parameter preset initial value, generating a control signal and finely tuning a digital control delay cell, adjusting a delay amount, and correcting a clock phase error between channels; according to a correction parameter initial value, correcting a gain error between channels, generating and buffering a general correction signal, and triggering a counting cell to start counting, and calling the general correction signal in a buffer and generating a preliminary estimation result by using a cyclic correlation method; when counting to a preset value, setting low-pass filter accumulating cell enable ends and a correction parameter updating cell, generating an error estimation result from the preliminary estimation result and latching it, updating a clock correction parameter and a gain correction parameter according to a gradient descent method, and latching them, and resetting to carry out cyclic estimat
    Type: Application
    Filed: August 20, 2015
    Publication date: December 13, 2018
    Applicant: NO. 24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
    Inventors: Jie PU, Gangyi HU, Xiaofeng SHEN, Xueliang XU, Dongbing FU, Ruitao ZHANG, Youhua WANG, Yuxin WANG, Guangbing CHEN, Ruzhang LI
  • Patent number: 9665511
    Abstract: A method, an upper computer and a system for programming nodes in a bus network are provided. The method comprises: analyzing a program file to be programmed to obtain data of the program file and a storage address corresponding to the data; broadcasting a routing request message and receiving responding messages returned from a plurality of lower computers, each lower computer corresponding to one node in the bus network; analyzing the responding messages to obtain an operating state of each node among the plurality of layers of nodes; receiving a selected node to be programmed, activating the selected node and transmitting the data and the storage address to a single chip microcomputer corresponding to the selected node when the operating state of each node is a forwarding state; and storing corresponding to the selected node the data in a memory of the single chip microcomputer according to the storage address.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 30, 2017
    Assignee: BYD COMPANY LIMITED
    Inventors: Huan Xia, Junlin Gong, Xiaohua Tang, Xiaofeng Shen, Xinghui Wang, Chao Wang
  • Patent number: 9583956
    Abstract: A charging device, a method for controlling a charging device, and a method for detecting a peripheral device are provided. The charging device comprises: a charging gun; a power module; and a controlling module coupled with the charging gun and the power module, wherein the controlling module is configured to determine whether the charging gun is connected with a peripheral device to be charged, and if yes, to control the power module to convert AC electricity to DC electricity to charge the peripheral device. A method for controlling a charging device is also provided. The method comprises: determining whether the charging gun is connected with a peripheral device; and if yes, controlling the power module to convert AC electricity to DC electricity to charge the peripheral device if the charging gun is determined to be connected to the peripheral device.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: February 28, 2017
    Assignees: BYD Company Limited, Shenzhen BYD Auto R&D Company Limited
    Inventors: Xinghui Wang, Jianhua Zhang, Xiaofeng Shen, Kaihua Niu, Xiao Chen, Jianwei Huang, Chaojie Zong, Lin Liu
  • Patent number: 9543761
    Abstract: A method of controlling a home energy control system includes controlling the system to run in at least one of a new energy generating mode, a grid-connected inverter mode and an off-grid inverter mode after mode conflict check. In the new energy generating mode, a new energy generating unit is controlled to generate power to charge an energy storage unit. In the grid-connected inverter mode, the energy storage unit supplies power to a power grid or is charged by the power grid according to the status of the energy storage unit and power consumption of the power grid. In the off-grid inverter mode, household devices are supplied with power from the energy storage unit according to the status of the energy storage unit under the control of an off-grid inverter. A home energy control system is also provided.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: January 10, 2017
    Assignees: SHENZHEN BYD AUTO R&D COMPANY LIMITED, BYD COMPANY LIMITED
    Inventors: Bo Li, Xiaofeng Shen, Jianhua Zhang
  • Patent number: 9222986
    Abstract: A distributed battery management device and a method thereof are provided. The method comprises: receiving, by a battery management control module, a first identification distribution request from a first data acquisition module; activating, by the battery management control module, the first data acquisition module for monitoring one or more batteries; and sending, by the battery management control module, a first identification message corresponding to the first identification distribution request, to the first data acquisition module. The device comprises: a battery management control module; and a first data acquisition module communicatively coupled with the battery management control module, wherein the battery management control module and the first data acquisition module are configured to communicate with each other to identify the data acquisition module.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: December 29, 2015
    Assignees: Shenzhen BYD Auto R&D Company Limited, BYD Company Limited
    Inventors: Xiaofeng Shen, Shuping Li, Jiaojiao Sun, Gang Liu, Haijun Yu
  • Publication number: 20150193362
    Abstract: A method, an upper computer and a system for programming nodes in a bus network are provided. The method comprises: analyzing a program file to be programmed to obtain data of the program file and a storage address corresponding to the data; broadcasting a routing request message and receiving responding messages returned from a plurality of lower computers, each lower computer corresponding to one node in the bus network; analyzing the responding messages to obtain an operating state of each node among the plurality of layers of nodes; receiving a selected node to be programmed, activating the selected node and transmitting the data and the storage address to a single chip microcomputer corresponding to the selected node when the operating state of each node is a forwarding state; and storing corresponding to the selected node the data in a memory of the single chip microcomputer according to the storage address.
    Type: Application
    Filed: June 21, 2013
    Publication date: July 9, 2015
    Inventors: Huan Xia, Junlin Gong, Xiaohua Tang, Xiaofeng Shen, Xinghui Wang, Chao Wang
  • Patent number: 8878603
    Abstract: A device for detecting a PWM wave, comprising: a PWM wave generating module, configured to generate the PWM wave; a detecting module coupled to the PWM wave generating module, configured to receive the PWM wave and to determine an electric level of the PWM wave; a timer coupled to the detecting module, configured to start a counting when the detecting module receives the PWM wave, and to interrupt the counting when the counting reaches a predetermined value, the detecting module determining whether the electric level of the PWM wave is a high electric level or a low electric level when the counting is interrupted; and a calculating module coupled to the detecting module, configured to calculate a duty ratio of the PWM wave based on a number of high electric level and a number of low electric level of the PWM wave determined within one period of the PWM wave.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: November 4, 2014
    Assignees: Shenzhen BYD Auto R&D Company Limited, BYD Company Limited
    Inventors: Yu Liu, Xiaofeng Shen, Jianhua Zhang
  • Patent number: 8853993
    Abstract: A control system for an in-vehicle solar energy charger, comprising a solar cell panel, a solar energy charger, a starting battery, a power battery and a controller. The solar energy charger, the starting battery and the power battery are electrically connected to the controller respectively. The controller is configured for performing a maximum photovoltaic power tracking algorithm and controlling an output power of the solar energy charger for charging the power battery or starting battery, according to an input power of the solar energy charger.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: October 7, 2014
    Assignee: BYD Company Limited
    Inventors: Zhenjie Wu, Xiaofeng Shen, Jianhua Zhang
  • Publication number: 20140292261
    Abstract: A charging device, a method for controlling a charging device, and a method for detecting a peripheral device are provided. The charging device comprises: a charging gun; a power module; and a controlling module coupled with the charging gun and the power module, wherein the controlling module is configured to determine whether the charging gun is connected with a peripheral device to be charged, and if yes, to control the power module to convert AC electricity to DC electricity to charge the peripheral device. A method for controlling a charging device is also provided. The method comprises: determining whether the charging gun is connected with a peripheral device; and if yes, controlling the power module to convert AC electricity to DC electricity to charge the peripheral device if the charging gun is determined to be connected to the peripheral device.
    Type: Application
    Filed: June 18, 2014
    Publication date: October 2, 2014
    Inventors: Xinghui WANG, Jianhua ZHANG, Xiaofeng SHEN, Kaihua NIU, Xiao CHEN, Jianwei HUANG, Chaojie ZONG, Lin LIU
  • Publication number: 20140236510
    Abstract: A distributed battery management device and a method thereof are provided. The method comprises: receiving, by a battery management control module, a first identification distribution request from a first data acquisition module; activating, by the battery management control module, the first data acquisition module for monitoring one or more batteries; and sending, by the battery management control module, a first identification message corresponding to the first identification distribution request, to the first data acquisition module. The device comprises: a battery management control module; and a first data acquisition module communicatively coupled with the battery management control module, wherein the battery management control module and the first data acquisition module are configured to communicate with each other to identify the data acquisition module.
    Type: Application
    Filed: April 23, 2014
    Publication date: August 21, 2014
    Applicants: SHENZHEN BYD AUTO R&D COMPANY LIMITED, BYD COMPANY LIMITED
    Inventors: Xiaofeng SHEN, Shuping LI, Jiaojiao SUN, Gang LIU, Haijun YU