Patents by Inventor Yuh-Fwu Chou

Yuh-Fwu Chou 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: 12155217
    Abstract: A power supply includes fuel cell, secondary battery, power converter, current detecting unit and control unit. The power converter couples the fuel cell with the secondary battery, and is adapted to convert current outputted by the fuel cell into output current. The current detecting unit couples the power converter with the secondary battery and adapted to detect charging current of the output current transferred to the secondary battery. The control unit couples the current detecting unit with the power converter and is adapted to: when the charging current is greater than a charging current upper-limit-setting value of the secondary battery, a down-adjustment signal is outputted to the power converter to reduce the output current; and when the charging current is less than the charging current upper-limit-setting value, an up-adjustment signal is outputted to the power converter to increase the output current.
    Type: Grant
    Filed: November 30, 2022
    Date of Patent: November 26, 2024
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chien-Chi Chiu, Yuh-Fwu Chou, Yin-Wen Tsai, Chih-Wei Hsu, Ku-Yen Kang
  • Publication number: 20240241179
    Abstract: A power supply system, a fuel cell power generation performance detection device and a control method thereof are provided. The fuel cell has a rated output voltage and an internal resistance having a preset resistance value. The detection device includes a test resistor, a first test switch, a current detection unit and a control unit. The control unit controls the first test switch and the current detection unit to send a first control signal to selectively turn on the first test switch. When the first test switch is turned on, the fuel cell, the test resistor, the first test switch and the current detection unit define a test loop. The current detection unit detects a test current passing through the test loop. The control unit obtains a real-time resistance value of the internal resistance based on the test current to evaluate the power generation performance of the fuel cell.
    Type: Application
    Filed: November 1, 2023
    Publication date: July 18, 2024
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yuh-Fwu CHOU, Ching-Jung LIU, Yin-Wen TSAI, Ku-Yen KANG, Chih-Wei HSU
  • Publication number: 20240157801
    Abstract: A method for estimating a flight time of a hydrogen fuel cell UAV (unmanned aerial vehicle) includes multiple steps performed by a controller: obtaining an internal pressure of a hydrogen tank by a pressure sensor installed on the hydrogen tank, calculating a remaining hydrogen volume according to the internal pressure and a capacity of the hydrogen tank, obtaining a reaction current value of the fuel cell, calculating a first hydrogen consumption rate according to the reaction current value, the number of a set of membrane electrodes connected in series and a Faraday constant, obtaining a second hydrogen consumption rate of a purge operation of an anode of the full cell; obtaining a hydrogen leakage rate of a stack of the fuel cell, and calculating the flight time according to the remaining hydrogen volume, the first hydrogen consumption rate, the second hydrogen consumption rate and the hydrogen leakage rate.
    Type: Application
    Filed: May 18, 2023
    Publication date: May 16, 2024
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Ching-Jung LIU, Yuh-Fwu CHOU, Ku-Yen KANG, Yin-Wen TSAI, Ching-Fang HO, Cheng-Hsien YU
  • Patent number: 11811114
    Abstract: The power supply device is configured on an aircraft and includes a secondary battery, a transformer, a fuel cell and a bypass switch. The transformer is electrically connected between the secondary battery and the aircraft. The fuel cell is suitable for providing a first output current to the aircraft. The bypass switch is connected in parallel with the transformer. The transformer has a first output voltage set value. When a first output terminal voltage of the fuel cell is lower than the first output voltage set value and the bypass switch is in a non-conducting state, a second output current of the secondary battery is provided to the aircraft via the transformer. When the first output terminal voltage is lower than the first output voltage set value and the bypass switch is in a conducting state, the second output current is provided to the aircraft via the bypass switch.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: November 7, 2023
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yin-Wen Tsai, Chih-Wei Hsu, Yuh-Fwu Chou, Chin-Yi Shih, Chien-Chi Chiu
  • Publication number: 20230216307
    Abstract: A power supply includes fuel cell, secondary battery, power converter, current detecting unit and control unit. The power converter couples the fuel cell with the secondary battery, and is adapted to convert current outputted by the fuel cell into output current. The current detecting unit couples the power converter with the secondary battery and adapted to detect charging current of the output current transferred to the secondary battery. The control unit couples the current detecting unit with the power converter and is adapted to: when the charging current is greater than a charging current upper-limit-setting value of the secondary battery, a down-adjustment signal is outputted to the power converter to reduce the output current; and when the charging current is less than the charging current upper-limit-setting value, an up-adjustment signal is outputted to the power converter to increase the output current.
    Type: Application
    Filed: November 30, 2022
    Publication date: July 6, 2023
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chien-Chi CHIU, Yuh-Fwu CHOU, Yin-Wen TSAI, Chih-Wei HSU, Ku-Yen KANG
  • Patent number: 11552315
    Abstract: A control system and a control method of fuel cell stacks are provided. The control system includes a set of fuel cell stacks, a secondary battery, a monitoring device, and a control device. Each fuel cell stack has a power output that can be independently started up or shut down. The secondary battery is connected to power output terminals of the fuel cell stacks via a power transmission path. The monitoring device is configured to monitor an electrical parameter of the power transmission path. The control device receives an electrical parameter signal from the monitoring device, and outputs a control signal to shut down or start up the power output of at least one of the fuel cell stacks if the electrical parameter's value is higher than a predetermined upper limit or lower than a predetermined lower limit.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: January 10, 2023
    Assignee: Industrial Technology Research Institute
    Inventors: Yin-Wen Tsai, Chih-Wei Hsu, Ku-Yen Kang, Yuh-Fwu Chou, Chin-Yi Shih
  • Patent number: 11444301
    Abstract: A power supply device disposed on an aircraft to provide a power to the aircraft is provided. The aircraft has an average required power value. The power supply device includes a secondary battery, a transformer and a fuel cell. The transformer is coupled between the secondary battery and the aircraft. The fuel cell is coupled to the aircraft and is adapted to provide a first output current to the aircraft. The transformer has an output voltage set value. When the first output end voltage of the fuel cell is lower than the output voltage set value, the transformer provides a second output current of the secondary battery to the aircraft. The output voltage set value is in a voltage range with a fuel cell output power between the maximum power value of characteristic curve of the fuel cell and the average required power value of the aircraft.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: September 13, 2022
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yuh-Fwu Chou, Ho-Cheng Lin
  • Publication number: 20220209262
    Abstract: A control system and a control method of fuel cell stacks are provided. The control system includes a set of fuel cell stacks, a secondary battery, a monitoring device, and a control device. Each fuel cell stack has a power output that can be independently started up or shut down. The secondary battery is connected to power output terminals of the fuel cell stacks via a power transmission path. The monitoring device is configured to monitor an electrical parameter of the power transmission path. The control device receives an electrical parameter signal from the monitoring device, and outputs a control signal to shut down or start up the power output of at least one of the fuel cell stacks if the electrical parameter's value is higher than a predetermined upper limit or lower than a predetermined lower limit.
    Type: Application
    Filed: April 14, 2021
    Publication date: June 30, 2022
    Applicant: Industrial Technology Research Institute
    Inventors: Yin-Wen Tsai, Chih-Wei Hsu, Ku-Yen Kang, Yuh-Fwu Chou, Chin-Yi Shih
  • Publication number: 20220209267
    Abstract: The power supply device is configured on an aircraft and includes a secondary battery, a transformer, a fuel cell and a bypass switch. The transformer is electrically connected between the secondary battery and the aircraft. The fuel cell is suitable for providing a first output current to the aircraft. The bypass switch is connected in parallel with the transformer. The transformer has a first output voltage set value. When a first output terminal voltage of the fuel cell is lower than the first output voltage set value and the bypass switch is in a non-conducting state, a second output current of the secondary battery is provided to the aircraft via the transformer. When the first output terminal voltage is lower than the first output voltage set value and the bypass switch is in a conducting state, the second output current is provided to the aircraft via the bypass switch.
    Type: Application
    Filed: December 30, 2020
    Publication date: June 30, 2022
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yin-Wen TSAI, Chih-Wei HSU, Yuh-Fwu CHOU, Chin-Yi SHIH, Chien-Chi CHIU
  • Publication number: 20200083550
    Abstract: A power supply device disposed on an aircraft to provide a power to the aircraft is provided. The aircraft has an average required power value. The power supply device includes a secondary battery, a transformer and a fuel cell. The transformer is coupled between the secondary battery and the aircraft. The fuel cell is coupled to the aircraft and is adapted to provide a first output current to the aircraft. The transformer has an output voltage set value. When the first output end voltage of the fuel cell is lower than the output voltage set value, the transformer provides a second output current of the secondary battery to the aircraft. The output voltage set value is in a voltage range with a fuel cell output power between the maximum power value of characteristic curve of the fuel cell and the average required power value of the aircraft.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 12, 2020
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Yuh-Fwu CHOU, Ho-Cheng LIN
  • Patent number: 8253380
    Abstract: A characteristic tracking method for a battery module including at least one battery is disclosed. A look-up table is provided according to a primary characteristic of the battery. It is determined whether a battery has satisfied a preset condition when the battery module is operated from a usage state to an idling state. The battery is measured to have obtained a first voltage and a real capacity when the battery satisfies the preset condition. The measured first voltage is utilized to locate a table capacity of the battery from the look-up table. The look-up table is updated according to the real capacity and the table capacity. A peripheral circuit of characteristic tracking method has been exhibited.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: August 28, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Chein-Chung Sun, Yuh-Fwu Chou, Ming-Wang Cheng, Sheng-Yong Shen
  • Patent number: 8183838
    Abstract: A charging method for a rechargeable battery is disclosed. A preset power is provided to the rechargeable battery when the rechargeable battery is connected to a charger for execution of a first charge process. A use state of the rechargeable battery is obtained. A first adjustable charge power is provided to the rechargeable battery when the rechargeable battery is reconnected to the charger for execution of a second charge process.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: May 22, 2012
    Assignee: Industrial Technology Research Institute
    Inventors: Chein-Chung Sun, Yuh-Fwu Chou
  • Patent number: 7821225
    Abstract: The invention provides a power management method for a hybrid power supply, comprising providing a primary power source, providing a rechargeable battery, providing a DC-DC converter, acquiring an amount of the power stored in the rechargeable battery, and when the energy level of the rechargeable battery does not exceed a first predetermined value, the DC-DC converter controls the primary power source to output a first value of a first electrical parameter.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: October 26, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Yuh-Fwu Chou, Chiou-Chu Lai, Sheng-Yong Shen
  • Patent number: 7711118
    Abstract: The security system for a protected object comprises a first wireless module, a central controller, and a remote authorization server. The first wireless module and the central controller are disposed in the protected object. The first wireless module transmits an authorization request with an authorization ID (identification) of the protected object, and receives an authorization response. The central controller is coupled to the first wireless module, and allows the protected object to operate in accordance with the authorization response. The remote authorization server, responsive to the authorization request, generates the authorization response from an authorization record thereof in accordance with the authorization ID, and transmits the authorization response.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: May 4, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Yuh-Fwu Chou, Hsin-Hsien Yeh, Mo-Hua Yang, Horng-Yuan Wen, Jing-Pin Pan, Ying-Chang Hung
  • Publication number: 20100072948
    Abstract: A characteristic tracking method for a battery module including at least one battery is disclosed. A look-up table is provided according to a primary characteristic of the battery. It is determined whether a battery has satisfied a preset condition when the battery module is operated from a usage state to an idling state. The battery is measured to have obtained a first voltage and a real capacity when the battery satisfies the preset condition. The measured first voltage is utilized to locate a table capacity of the battery from the look-up table. The look-up table is updated according to the real capacity and the table capacity. A peripheral circuit of characteristic tracking method has been exhibited.
    Type: Application
    Filed: July 2, 2009
    Publication date: March 25, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chein-Chung SUN, Yuh-Fwu Chou, Ming-Wang Cheng, Sheng-Yong Shen
  • Patent number: 7633269
    Abstract: A charging method for charging a battery module. The battery module receives a different charge voltage according to the voltage or current status of the battery module. The charge voltage is decreased to increase battery power when any battery voltage level is greater than a preset voltage. A charging system thereof is also disclosed.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: December 15, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Yuh-Fwu Chou, Bing-Ming Lin, Po-Yin Tseng, Kuo-Kuang Peng
  • Publication number: 20090160406
    Abstract: A charging method for a rechargeable battery is disclosed. A preset power is provided to the rechargeable battery when the rechargeable battery is connected to a charger for execution of a first charge process. A use state of the rechargeable battery is obtained. A first adjustable charge power is provided to the rechargeable battery when the rechargeable battery is reconnected to the charger for execution of a second charge process.
    Type: Application
    Filed: September 23, 2008
    Publication date: June 25, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Chein-Chung Sun, Yuh-Fwu Chou
  • Patent number: 7535256
    Abstract: A cross-level digital signal transmission device between two systems for cross-level digital signal transmission. Bi-directional symmetrical transmission is achieved without using additional control signals, and use of the transmission signal itself eliminates the positive feedback loop. Thus, neither additional control signals nor resulting unsymmetrical circuits need be provided.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: May 19, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Yuh-Fwu Chou, Tshaw-Chuang Chen, Po-Yin Tseng, Kuo-Kuang Peng, Mei-Fang Huang, Ho-Yin Pun
  • Publication number: 20080157778
    Abstract: An estimation method for estimating a remaining capacity of a battery utilized by an electronic system is disclosed. The voltage of the battery is detected or is determined by a first reference value. When the duration of a specific state arrives at a preset time, a specific action is executed.
    Type: Application
    Filed: December 19, 2007
    Publication date: July 3, 2008
    Inventors: Yuh-Fwu Chou, Po-Yin Tseng, Ming-Wang Cheng
  • Publication number: 20070147615
    Abstract: A security system. The security system for a protected object comprises a first wireless module, a central controller, and a remote authorization server. The first wireless module and the central controller are disposed in the protected object. The first wireless module transmits an authorization request with an authorization ID (identification) of the protected object, and receives an authorization response. The central controller is coupled to the first wireless module, and allows the protected object to operate in accordance with the authorization response. The remote authorization server, responsive to the authorization request, generates the authorization response from an authorization record thereof in accordance with the authorization ID, and transmits the authorization response.
    Type: Application
    Filed: December 28, 2005
    Publication date: June 28, 2007
    Inventors: Yuh-Fwu Chou, Hsin-Hsien Yeh, Mo-Hua Yang, Horng-Yuan Wen, Jing-Pin Pan, Ying-Chang Hung