Patents by Inventor Xiangkun MA

Xiangkun MA 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: 11063263
    Abstract: An electrode structure of a flow battery, a flow battery stack, and a sealing structure of the flow battery stack, wherein the density of the vertical tow in the electrode fiber is larger than the density of the parallel tow. In the electrode fiber per unit volume, the quantity ratio of the vertical tow to the parallel tow is at least 6:4. The electrode structure is composed of an odd number of layers of the electrode fibers, and the porosity of other layers is larger than the porosity of the center layer.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: July 13, 2021
    Assignee: DALIAN RONGKEPOWER CO., LTD
    Inventors: Shenglin Liu, Hongdong Jiang, Huamin Zhang, Xiangkun Ma, Tao Zhang, Shan Jiang, Zhenkun Yang, Dan Sun, Kuanrong Yi
  • Patent number: 10991960
    Abstract: A flow battery system has an electrolyte storage tank, a flow battery, and a box-type flow battery system. A circular pipe I and a circular pipe II are provided in the electrolyte storage tank; the circular pipe II is communicated with an electrolyte return opening; the circular pipe I is communicated with an electrolyte delivery outlet; the annular perimeter of the circular pipe I is not equal to the annular perimeter of the circular pipe II. The multi-layer circular pipe structure in the storage tank reduces the flowing dead zone of electrolyte in the storage tank. Moreover, The reduction in the longitudinal distance between the electrolyte delivery outlet and the electrolyte return opening also reduced the problem of SOC lag so that the SOC monitoring accuracy of the flow battery is improved.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: April 27, 2021
    Assignee: DALIAN RONGKEPOWER CO., LTD
    Inventors: Jingbo Wu, Huamin Zhang, Xiangkun Ma, Hongbo Wang, Ying Quan, You Wang, Xi Han, Jun Li
  • Patent number: 10868318
    Abstract: A flow battery has a control system and a control method to control the operation of the flow battery. The control method includes disposing an SOC detection device respectively at a positive electrolyte outlet and a negative electrolyte outlet of a cell stack; obtaining, by the SOC detection devices, SOCs at the electrolyte outlets of the cell stack under an initial state of the flow battery; at every preset time, acquiring the volume of electrolyte in the positive electrolyte storage tank, the volume of electrolyte in the negative electrolyte storage tank, the volume of the electrolyte flowing into the positive electrolyte storage tank, and the volume of the electrolyte flowing into the negative electrolyte storage tank, and meanwhile, obtaining, by the SOC detection devices, SOCs at the electrolyte outlets of the cell stack; and obtaining SOC of the flow battery.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: December 15, 2020
    Assignee: DALIAN RONGKEPOWER CO., LTD
    Inventors: Ting Chigan, Huamin Zhang, Xiangkun Ma, Jingbo Wu, Shanqiang Lv, Ning Chen
  • Patent number: 10629932
    Abstract: An apparatus monitors the state of charge (SOC) of a flow battery system. The monitoring method include determining SOCs of at least two pairs of different monitoring positions. A pair of monitoring position may be located inside of an anode electrolyte storage tank (2) and inside of a cathode electrolyte storage tank (3), or inside of an anode electrolyte outlet pipeline (6) of a stack and inside of a cathode electrolyte outlet pipeline (7) of the stack, or inside of an anode electrolyte inlet pipeline (8) of the stack and inside of a cathode electrolyte inlet pipeline (9) of the stack. The SOCsum of the flow battery system is acquired according to the SOCs corresponding to different pair of monitoring positions, respectively. The method ensures acquiring an SOC monitoring result timely and accurately.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: April 21, 2020
    Assignee: DALIAN RONGKEPOWER CO., LTD
    Inventors: Yu Zhang, Yi Zou, Huamin Zhang, Ying Li, Xiaoli Wang, Xi Han, Lecong Han, Tao Zhang, Xiangkun Ma, Honggui Zhao
  • Publication number: 20190319274
    Abstract: An electrode structure of a flow battery, a flow battery stack, and a sealing structure of the flow battery stack, wherein the density of the vertical tow in the electrode fiber is larger than the density of the parallel tow. In the electrode fiber per unit volume, the quantity ratio of the vertical tow to the parallel tow is at least 6:4. The electrode structure is composed of an odd number of layers of the electrode fibers, and the porosity of other layers is larger than the porosity of the center layer.
    Type: Application
    Filed: November 3, 2017
    Publication date: October 17, 2019
    Inventors: Shenglin LIU, Hongdong JIANG, Huamin ZHANG, Xiangkun MA, Tao ZHANG, Shan JIANG, Zhenkun YANG, Dan SUN, Kuanrong YI
  • Publication number: 20190305345
    Abstract: An apparatus monitors the state of charge (SOC) of a flow battery system. The monitoring method include determining SOCs of at least two pairs of different monitoring positions. A pair of monitoring position may be located inside of an anode electrolyte storage tank (2) and inside of a cathode electrolyte storage tank (3), or inside of an anode electrolyte outlet pipeline (6) of a stack and inside of a cathode electrolyte outlet pipeline (7) of the stack, or inside of an anode electrolyte inlet pipeline (8) of the stack and inside of a cathode electrolyte inlet pipeline (9) of the stack. The SOCsum of the flow battery system is acquired according to the SOCs corresponding to different pair of monitoring positions, respectively. The method ensures acquiring an SOC monitoring result timely and accurately.
    Type: Application
    Filed: May 15, 2019
    Publication date: October 3, 2019
    Inventors: Yu ZHANG, Yi ZOU, Huamin ZHANG, Ying LI, Xiaoli WANG, Xi HAN, Lecong HAN, Tao ZHANG, Xiangkun MA, Honggui ZHAO
  • Patent number: 10424797
    Abstract: An apparatus monitors the state of charge (SOC) of a flow battery system. The monitoring method include determining SOCs of at least two pairs of different monitoring positions. A pair of monitoring position may be located inside of an anode electrolyte storage tank (2) and inside of a cathode electrolyte storage tank (3), or inside of an anode electrolyte outlet pipeline (6) of a stack and inside of a cathode electrolyte outlet pipeline (7) of the stack, or inside of an anode electrolyte inlet pipeline (8) of the stack and inside of a cathode electrolyte inlet pipeline (9) of the stack. The SOCsum of the flow battery system is acquired according to the SOCs corresponding to different pair of monitoring positions, respectively. The method ensures acquiring an SOC monitoring result timely and accurately.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: September 24, 2019
    Assignee: DALIAN RONGKEPOWER CO., LTD
    Inventors: Yu Zhang, Yi Zou, Huamin Zhang, Ying Li, Xiaoli Wang, Xi Han, Lecong Han, Tao Zhang, Xiangkun Ma, Honggui Zhao
  • Publication number: 20190288320
    Abstract: The present disclosure discloses a flow battery system and a large-scale flow battery energy storage device. The flow battery system comprises multiple flow batteries; each of the flow batteries comprises a battery pack A, a battery pack B, a battery pack C, and a set of electrolyte circulation system used by the battery pack A, the battery pack B and the battery pack C; the battery pack A, the battery pack B and the battery pack C comprised in each flow battery are independent of each other in the circuit. According to the present disclosure, at least two sets of electrolyte circulation system are saved under the same power scale, such that the system stability is improved while the cost is reduced.
    Type: Application
    Filed: August 17, 2016
    Publication date: September 19, 2019
    Inventors: Haijun ZHAO, Huamin ZHANG, Xiangkun MA, Jiayun SHAO, Hongbo WANG, Ting CHIGAN
  • Publication number: 20190260050
    Abstract: A flow battery has a control system and a control method to control the operation of the flow battery. The control method includes disposing an SOC detection device respectively at a positive electrolyte outlet and a negative electrolyte outlet of a cell stack; obtaining, by the SOC detection devices, SOCs at the electrolyte outlets of the cell stack under an initial state of the flow battery; at every preset time, acquiring the volume of electrolyte in the positive electrolyte storage tank, the volume of electrolyte in the negative electrolyte storage tank, the volume of the electrolyte flowing into the positive electrolyte storage tank, and the volume of the electrolyte flowing into the negative electrolyte storage tank, and meanwhile, obtaining, by the SOC detection devices, SOCs at the electrolyte outlets of the cell stack; and obtaining SOC of the flow battery.
    Type: Application
    Filed: March 14, 2016
    Publication date: August 22, 2019
    Inventors: Ting CHIGAN, Huamin ZHANG, Xiangkun MA, Jingbo WU, Shanqiang LV, Ning CHEN
  • Publication number: 20190131639
    Abstract: A flow battery system has an electrolyte storage tank, a flow battery, and a box-type flow battery system. A circular pipe I and a circular pipe II are provided in the electrolyte storage tank; the circular pipe II is communicated with an electrolyte return opening; the circular pipe I is communicated with an electrolyte delivery outlet; the annular perimeter of the circular pipe I is not equal to the annular perimeter of the circular pipe II. The multi-layer circular pipe structure in the storage tank reduces the flowing dead zone of electrolyte in the storage tank. Moreover, The reduction in the longitudinal distance between the electrolyte delivery outlet and the electrolyte return opening also reduced the problem of SOC lag so that the SOC monitoring accuracy of the flow battery is improved.
    Type: Application
    Filed: March 14, 2016
    Publication date: May 2, 2019
    Inventors: Jingbo WU, Huamin ZHANG, Xiangkun MA, Hongbo WANG, Ying QUAN, You WANG, Xi HAN, Jun LI
  • Publication number: 20190123369
    Abstract: The control method for a flow battery includes acquiring a current electrolyte capacity decay rate of the flow battery; comparing the current electrolyte capacity decay rate with a first preset decay rate and a second preset decay rate; when the current electrolyte capacity decay rate is greater than the first preset decay rate and less than the second preset decay rate, adjusting a liquid level of positive electrolyte and a liquid level of negative electrolyte, such that a difference between these two liquid levels is less than a preset value, a ratio of the total amount of vanadium in the positive electrolyte to the total amount of vanadium in the negative electrolyte remains in a first preset ratio range, or a ratio of a vanadium ion concentration in the positive electrolyte to a vanadium ion concentration in the negative electrolyte remains in a second preset ratio range.
    Type: Application
    Filed: March 14, 2016
    Publication date: April 25, 2019
    Inventors: Xiangkun MA, Huamin ZHANG, Ting CHIGAN, Xinliang GAO, Hongbo WANG, Yang HUO
  • Publication number: 20170237091
    Abstract: An apparatus monitors the state of charge (SOC) of a flow battery system. The monitoring method include determining SOCs of at least two pairs of different monitoring positions. A pair of monitoring position may be located inside of an anode electrolyte storage tank (2) and inside of a cathode electrolyte storage tank (3), or inside of an anode electrolyte outlet pipeline (6) of a stack and inside of a cathode electrolyte outlet pipeline (7) of the stack, or inside of an anode electrolyte inlet pipeline (8) of the stack and inside of a cathode electrolyte inlet pipeline (9) of the stack. The SOCsum of the flow battery system is acquired according to the SOCs corresponding to different pair of monitoring positions, respectively. The method ensures acquiring an SOC monitoring result timely and accurately.
    Type: Application
    Filed: May 3, 2017
    Publication date: August 17, 2017
    Inventors: Yu ZHANG, Yi ZOU, Huamin ZHANG, Ying LI, Xiaoli WANG, Xi HAN, Lecong HAN, Tao ZHANG, Xiangkun MA, Honggui ZHAO