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: 20250110180
    Abstract: A system architecture, a battery management system controller, and a vehicle are provided. The system architecture includes a first function trigger, a logical processor and a second function trigger, which are connected in sequence. The first function trigger is used for reading a function value of an external function and outputting the function value to the logical processor. The logical processor is used for executing preset computation logic according to the function value and outputting a first computation result to the second function trigger. The second function trigger is used for writing the first computation result into the external function. When the system architecture is in an offline debugging state, the logical processor is in a separated state in which the logical processor is respectively independent of the first function trigger and the second function trigger.
    Type: Application
    Filed: December 13, 2024
    Publication date: April 3, 2025
    Inventors: Xiang Yue, Xiaofeng Shen, Chongru Hua
  • Patent number: 12263757
    Abstract: A battery equalization system, a vehicle, a battery equalization method, and a storage medium. The battery equalization system includes: a collection circuit; and 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: Grant
    Filed: June 21, 2023
    Date of Patent: April 1, 2025
    Assignee: BYD COMPANY LIMITED
    Inventors: Hongbin Luo, Chao Wang, Xiaofeng Shen, Qiuyong Zeng
  • Publication number: 20250021311
    Abstract: A system controller for a battery management includes a control chip including a processor and an architecture embedded in the control chip. The architecture includes a target unit, a project determination unit, a project unit, and a model-level output signal summary unit. The processor is configured to run on the architecture to perform the battery management. The project determination unit is configured to output a project enable signal corresponding to the target unit. The project unit includes the target unit, and the project enable signal is configured to trigger startup of the target unit to execute a corresponding logic control strategy. The target unit is configured to receive the project enable signal, and output a unit-level output summary signal based on the project enable signal, and the model-level output signal summary unit is configured to receive the unit-level output summary signal, and to output a model-level output summary signal.
    Type: Application
    Filed: September 26, 2024
    Publication date: January 16, 2025
    Inventors: Xiaofeng SHEN, Chongru HUA, Xiang YUE
  • Publication number: 20240319984
    Abstract: An ECU upgrade method is provided, including: obtaining a set first encapsulation file, where the first encapsulation file encapsulates first vehicle model information and first upgrade content related information corresponding to the first vehicle model information; obtaining the first vehicle model information and the first upgrade content related information based on the first encapsulation file; obtaining first upgrade process related information corresponding to the first vehicle model information from a set memory based on the first vehicle model information; and performing ECU upgrade processing on a vehicle having the first vehicle model information based on the first upgrade process related information and the first upgrade content related information.
    Type: Application
    Filed: May 27, 2024
    Publication date: September 26, 2024
    Inventors: Xiaofeng SHEN, Ji NIE, Lvfen CHEN
  • Publication number: 20240246449
    Abstract: A charging control method for a vehicle having an electric function includes: vehicle usage habit data of a user in preset time is read. The usage habit data includes a charging time point of each charging and driving mileage of each driving of the vehicle in the preset time. A current remaining state of charge of the vehicle at a current moment is detected. An estimated need state of charge of the vehicle is determined based on the usage habit data. Whether the vehicle needs charging is determined based on the estimated need state of charge and the current remaining state of charge. The present disclosure further provides a charging control apparatus, a vehicle, and a computer-readable storage medium.
    Type: Application
    Filed: March 31, 2024
    Publication date: July 25, 2024
    Inventors: Qiuyong ZENG, Xiaofeng SHEN, Linwang DENG, Yuanhong LIU, Honggang YOU, Xunwen CAO
  • Publication number: 20240243944
    Abstract: An electric vehicle monitoring method, apparatus, and a readable storage medium are provided. The method includes the followings. A first configuration file corresponding to a first electric vehicle is obtained. The first configuration file includes first function information, first CAN communication protocol information, and first style information that correspond to the first electric vehicle. The first function information, the first CAN communication protocol information, and the first style information are obtained according to the first configuration file. Configuration information that is of a target function and that is corresponding to the first function information is obtained. Display content of the target function in a set display interface is configured according to the first style information and the configuration information of the target function.
    Type: Application
    Filed: March 27, 2024
    Publication date: July 18, 2024
    Inventors: Xiaofeng SHEN, Ji NIE, Lvfen CHEN
  • Publication number: 20240120932
    Abstract: Embodiments of the disclosure provide a circuit, chip, system, and method for eliminating random perturbation. The circuit includes a weight calculating module for receiving digital signals and random perturbation digital quantity, using least mean square error algorithm to calculate weight deviation iteration coefficient based on digital signal and digital quantity, and updating perturbation weight in real-time according to weight deviation iteration coefficient; and a perturbation eliminating module for eliminating perturbation signal in output digital signal of quantizer according to perturbation weight updated in real-time and updating perturbation weight in real-time according to weight deviation iteration coefficient, and then calculating current perturbation weight in real time to realize self-calibration of perturbation weight.
    Type: Application
    Filed: December 3, 2023
    Publication date: April 11, 2024
    Applicant: Chongqing GigaChip Technology Co., Ltd.
    Inventors: Yabo NI, Yong ZHANG, Xiaofeng SHEN, Ting LI, Lu LIU, Can ZHU, Jiahao PENG, Liang LI, Dongbing FU, Jianan WANG
  • Publication number: 20230356626
    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: June 21, 2023
    Publication date: November 9, 2023
    Applicant: BYD COMPANY LIMITED
    Inventors: Hongbin LUO, Chao WANG, Xiaofeng SHEN, Qiuyong ZENG
  • Patent number: 11571981
    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: Grant
    Filed: August 31, 2018
    Date of Patent: February 7, 2023
    Assignee: BYD COMPANY LIMITED
    Inventors: Hongbin Luo, Chao Wang, Xiaofeng Shen, Chengzhi Wang, Qiuyong Zeng
  • Patent number: 11502657
    Abstract: 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: Grant
    Filed: July 25, 2018
    Date of Patent: November 15, 2022
    Assignee: 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: 11404371
    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: Grant
    Filed: July 18, 2018
    Date of Patent: August 2, 2022
    Assignee: 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
  • Patent number: 11353505
    Abstract: The present disclosure provides a differential clock cross point detection circuit and a detection method. The detection circuit includes: a first MOS transistor (M1), a second MOS transistor (M2) and a capacitor (C); a drain of the first MOS transistor (M1) is connected to a negative terminal (CLK?) of a differential clock, a gate of the first MOS transistor (M1) is connected to a positive terminal (CLK+) of the differential clock, and a source of the first MOS transistor (M1) is connected to a drain of the second MOS transistor (M2); a gate of the second MOS transistor (M2) is connected to the negative terminal (CLK?) of the differential clock, and a source of the second MOS transistor (M2) is connected to an output terminal through a node; one terminal of the capacitor (C) is connected to a node (A), and the other terminal of the capacitor (C) is grounded.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: June 7, 2022
    Assignees: NO. 24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION, CHONGQING GIGACHIP TECHNOLOGY CO. LTD.
    Inventors: Mingyuan Xu, Liang Li, Jun Liu, Xiaofeng Shen, Jianan Wang, Dongbing Fu, Guangbing Chen, Xingfa Huang, Xi Chen
  • Patent number: 11323129
    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: Grant
    Filed: December 13, 2018
    Date of Patent: May 3, 2022
    Assignee: 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
  • Patent number: 11292360
    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: Grant
    Filed: August 31, 2018
    Date of Patent: April 5, 2022
    Assignee: BYD COMPANY LIMITED
    Inventors: Hongbin Luo, Chao Wang, Xiaofeng Shen, Qiuyong Zeng, Yuanhong Liu, Xiang Zhang
  • Patent number: 11290091
    Abstract: The present disclosure provides a high-speed regenerative comparator circuit, including: a signal input stage connected with an input terminal for differential signal input; a latch for caching and serving as a differential signal output terminal; a current source connected with the signal input stage for providing a power supply voltage; a fast path connected with the output terminal and used for increasing a voltage difference of the output terminal and turning on a positive feedback network of the latch; and a reset switch, including a first reset switch and a second reset switch. In the high-speed regenerative comparator circuit of the present disclosure, the transmission delay of the regenerative comparator circuit can be greatly reduced; and in a latch phase, a bias voltage is disconnected by means of timing control, and thus the power consumption of a comparator can be reduced. The present disclosure has simple circuit and high reliability.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: March 29, 2022
    Assignee: NO.24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
    Inventors: Xi Chen, Xiaofeng Shen, Xingfa Huang, Liang Li, Mingyuan Xu, Jian'an Wang, Dongbing Fu, Guangbing Chen
  • Publication number: 20220091184
    Abstract: The present disclosure provides a differential clock cross point detection circuit and a detection method. The detection circuit includes: a first MOS transistor (M1), a second MOS transistor (M2) and a capacitor (C); a drain of the first MOS transistor (M1) is connected to a negative terminal (CLK?) of a differential clock, a gate of the first MOS transistor (M1) is connected to a positive terminal (CLK+) of the differential clock, and a source of the first MOS transistor (M1) is connected to a drain of the second MOS transistor (M2); a gate of the second MOS transistor (M2) is connected to the negative terminal (CLK?) of the differential clock, and a source of the second MOS transistor (M2) is connected to an output terminal through a node; one terminal of the capacitor (C) is connected to a node (A), and the other terminal of the capacitor (C) is grounded.
    Type: Application
    Filed: January 7, 2020
    Publication date: March 24, 2022
    Applicants: NO.24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION, CHONGQING GIGACHIP TECHNOLOGY CO. LTD.
    Inventors: MINGYUAN XU, LIANG LI, JUN LIU, XIAOFENG SHEN, JIANAN WANG, DONGBING FU, GUANGBING CHEN, XINGFA HUANG, XI CHEN
  • Publication number: 20220052673
    Abstract: The present disclosure provides a high-speed regenerative comparator circuit, including: a signal input stage connected with an input terminal for differential signal input; a latch for caching and serving as a differential signal output terminal; a current source connected with the signal input stage for providing a power supply voltage; a fast path connected with the output terminal and used for increasing a voltage difference of the output terminal and turning on a positive feedback network of the latch; and a reset switch, including a first reset switch and a second reset switch. In the high-speed regenerative comparator circuit of the present disclosure, the transmission delay of the regenerative comparator circuit can be greatly reduced; and in a latch phase, a bias voltage is disconnected by means of timing control, and thus the power consumption of a comparator can be reduced. The present disclosure has simple circuit and high reliability.
    Type: Application
    Filed: August 1, 2019
    Publication date: February 17, 2022
    Applicant: NO.24 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
    Inventors: Xi CHEN, Xiaofeng SHEN, Xingfa HUANG, Liang LI, Mingyuan XU, Jian'an WANG, Dongbing FU, Guangbing CHEN
  • Patent number: 11251788
    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: Grant
    Filed: July 21, 2017
    Date of Patent: February 15, 2022
    Assignee: 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: 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