Patents by Inventor Guanghui Feng

Guanghui Feng 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: 11936056
    Abstract: A battery module, a battery pack, and a vehicle are described in this patent application. In the battery module, a plurality of grooves separated by partition parts are disposed in a module casing, a plurality of jelly rolls of the battery module are embedded in the grooves, and a top cover covers an opening of each groove to seal the groove as an independent mounting cavity. In this way, each groove wall in the module casing and the top cover may be used as a housing for sealing each jelly roll, to avoid a case in which an electrolyte in each jelly roll decomposes and produces gas in a process of using the battery module because the electrolyte is leaked from one jelly roll to another jelly roll.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: March 19, 2024
    Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
    Inventors: Guanghui Zhang, Zhen Qin, Kai Feng
  • Patent number: 11750375
    Abstract: Disclosed are an encryption and decryption method and device based on bit permutation and bit transformation. The method includes: configuring a memory space, and preparing corresponding storage spaces for a plaintext file, a ciphertext file and a key file; changing a bit value of an initial key stream according to a bit operation rule, so as to obtain a bit-transformed key stream, changing a bit value of a plaintext according to the bit operation rule depending on the key stream; on the basis of a bit-transformed plaintext stream, according to a bit permutation rule depending on the key stream, performing a bit permutation operation on the bit-transformed plaintext stream, and randomly distributing the plaintext stream in a ciphertext stream, so as to obtain a target ciphertext and store the same as a file.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: September 5, 2023
    Assignees: Zhuhai College of Science And Technology, Jilin University
    Inventors: Yujuan Si, Guanghui Feng, Liuqi Lang, Xiaoyang Fu, Hao Wu
  • Publication number: 20220150054
    Abstract: Disclosed are an encryption and decryption method and device based on bit permutation and bit transformation. The method includes: configuring a memory space, and preparing corresponding storage spaces for a plaintext file, a ciphertext file and a key file; changing a bit value of an initial key stream according to a bit operation rule, so as to obtain a bit-transformed key stream, changing a bit value of a plaintext according to the bit operation rule depending on the key stream; on the basis of a bit-transformed plaintext stream, according to a bit permutation rule depending on the key stream, performing a bit permutation operation on the bit-transformed plaintext stream, and randomly distributing the plaintext stream in a ciphertext stream, so as to obtain a target ciphertext and store the same as a file.
    Type: Application
    Filed: April 19, 2019
    Publication date: May 12, 2022
    Applicants: Zhuhai College of Science And Technology, Jilin University
    Inventors: Yujuan Si, Guanghui Feng, Liuqi Lang, Xiaoyang Fu, Hao Wu
  • Publication number: 20220109566
    Abstract: Disclosed are an encryption and decryption method and device based on a random hash and bit operation. The method includes the steps of: S1: configuring a memory space, and preparing corresponding storage spaces for a plaintext file, a ciphertext file, and a key file, wherein the key file comes from an existing coding sequence and serves as a shared file for encryption and decryption; S2: providing a reversible hash function set used for encryption and decryption, and then uniformly scattering the plaintext in a known binary random hash by an encryption hash function; and S3: introducing a bit operation rule set, changing values of all or partial binary bits of the binary random hash by a bit operation, and mapping the values to a ciphertext space. The device includes a memory and a processor, and is configured to implement the above method.
    Type: Application
    Filed: April 19, 2019
    Publication date: April 7, 2022
    Applicants: Jilin University, Zhuhai College of Science And Technology
    Inventors: Yujuan SI, Guanghui FENG, Liuqi LANG, Xiaoyang FU, Hao WU
  • Patent number: 11165562
    Abstract: The invention discloses a sequential encryption method based on multi-key stream ciphers, comprising the following steps of: acquiring plaintext data, and storing the acquired plaintext data in the form of a circular linked list; storing a plurality of key sequences in the form of a circular linked list, respectively; performing a bitwise operation on the key sequences according to a specified starting bit to generate a stream random sequence; and, reconstructing the plaintext data according to the stream random sequence to generate encrypted ciphertext data. The method of the invention is simple in encryption and decryption, difficult to decipher, easy to implement by a computer without auxiliary hardware devices, fast in encryption and decryption speed, strong in the diffusion property of the generated ciphertext, and good in anti-interception performance and the like.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: November 2, 2021
    Assignee: Zhuhai College of Jilin University
    Inventors: Yujuan Si, Liuqi Lang, Guanghui Feng, Jialiang Chen
  • Publication number: 20190207745
    Abstract: The invention discloses a sequential encryption method based on multi-key stream ciphers, comprising the following steps of: acquiring plaintext data, and storing the acquired plaintext data in the form of a circular linked list; storing a plurality of key sequences in the form of a circular linked list, respectively; performing a bitwise operation on the key sequences according to a specified starting bit to generate a stream random sequence; and, reconstructing the plaintext data according to the stream random sequence to generate encrypted ciphertext data. The method of the invention is simple in encryption and decryption, difficult to decipher, easy to implement by a computer without auxiliary hardware devices, fast in encryption and decryption speed, strong in the diffusion property of the generated ciphertext, and good in anti-interception performance and the like.
    Type: Application
    Filed: April 13, 2018
    Publication date: July 4, 2019
    Applicant: Zhuhai College of Jilin University
    Inventors: Yujuan SI, Liuqi LANG, Guanghui FENG, Jialiang CHEN
  • Patent number: 8568924
    Abstract: An improved anode material for a lithium ion battery is disclosed. The improved anode material can improve both electric conductivity and the mechanical resilience of the anode, thus drastically increasing the lifetime of lithium ion batteries.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: October 29, 2013
    Assignee: CNano Technology Limited
    Inventors: Jun Ma, Zhaojie Wei, Guanghui Feng, Bin He, Gang Xu, Tao Zheng
  • Publication number: 20130136994
    Abstract: An improved anode material for a lithium ion battery is disclosed. The improved anode material can improve both electric conductivity and the mechanical resilience of the anode, thus drastically increasing the lifetime of lithium ion batteries.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 30, 2013
    Inventors: Jun Ma, Zhaojie Wei, Guanghui Feng, Bin He, Gang Xu, Tao Zheng