Patents by Inventor Chia-Hsiang Li

Chia-Hsiang Li 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: 8737074
    Abstract: A modular direct-current power conversion system is applied to receive a DC input voltage and output a DC output voltage. The modular direct-current power conversion system includes a main board and a plurality of DC power conversion modules. The main board includes a primary surface, a voltage input terminal, a voltage output terminal, a plurality of insertion regions, and a plurality of pin holders. When the DC power conversion module is inserted on the main board, the DC input voltage is inputted via the voltage input terminal to the DC power conversion module. The DC power conversion module converts the DC input voltage into a DC output voltage, and the DC output voltage is outputted via the voltage output terminal.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: May 27, 2014
    Assignee: Delta Electronics, Inc.
    Inventors: Ping-Long Yang, Chia-Hsiang Li
  • Patent number: 8723364
    Abstract: An uninterruptible power supply includes an AC-to-DC converting circuit, an energy storage unit, a first path-switching circuit, a second path-switching circuit, an integrated charge/discharge circuit and an operating control unit. If the input voltage is abnormal, the input terminal and the output terminal of the integrated charge/discharge circuit are respectively connected to the energy storage unit and the power supply output terminal, so that electric energy stored in the energy storage unit is transmitted to the power supply output terminal through the integrated charge/discharge circuit. Whereas, if the input voltage is normal, the input terminal and the output terminal of the integrated charge/discharge circuit are respectively connected to the power supply output terminal and the energy storage unit, so that the energy storage unit is charged by the integrated charge/discharge circuit.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: May 13, 2014
    Assignee: Delta Electronics, Inc.
    Inventors: Ping-Long Yang, Chia-Hsiang Li
  • Publication number: 20140035376
    Abstract: An uninterruptible power system includes a power distribution apparatus and an interruptible power apparatus. The power distribution apparatus has a plurality of power supply units, which receive an external AC power and convert the external AC power into a first DC output power to supply a DC load. The interruptible power apparatus has a plurality of power conversion modules, which receive an external DC power and convert the external DC power into a second DC output power to supply the DC load. The DC load is supplied by the first DC output power when the external AC power normally operates; whereas the DC load is supplied by the second DC output power when the external AC power abnormally operates.
    Type: Application
    Filed: September 26, 2012
    Publication date: February 6, 2014
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Chia-Hsiang LI, Wei-Chun WANG, De-Chang JIN
  • Publication number: 20130057072
    Abstract: An uninterrupted power supply apparatus is applied to an alternating current power apparatus and a load. The uninterrupted power supply apparatus includes a power distribution unit, a power supply unit, and an uninterrupted power supply unit. The power distribution unit includes a plurality of slots. The power distribution unit is electrically connected to the alternating current power apparatus and the load. The power supply unit is electrically connected to the power distribution unit and inserted into the corresponding slot. The uninterrupted power supply unit is electrically connected to the power distribution unit and inserted into the corresponding slot. The present invention is provided to improve the performance of the uninterrupted power supply and reduce occupied space of a cabinet to save space.
    Type: Application
    Filed: June 14, 2012
    Publication date: March 7, 2013
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Wei-Chun WANG, Chia-Hsiang LI
  • Publication number: 20120327604
    Abstract: A modular direct-current power conversion system is applied to receive a DC input voltage and output a DC output voltage. The modular direct-current power conversion system includes a main board and a plurality of DC power conversion modules. The main board includes a primary surface, a voltage input terminal, a voltage output terminal, a plurality of insertion regions, and a plurality of pin holders. When the DC power conversion module is inserted on the main board, the DC input voltage is inputted via the voltage input terminal to the DC power conversion module. The DC power conversion module converts the DC input voltage into a DC output voltage, and the DC output voltage is outputted via the voltage output terminal.
    Type: Application
    Filed: September 13, 2011
    Publication date: December 27, 2012
    Inventors: Ping-Long YANG, Chia-Hsiang Li
  • Publication number: 20120307916
    Abstract: A transmitting apparatus using DC carrier includes a microcontroller, a transmitting-side communication circuit, an induction reactance unit, a DC isolation unit, and a DC power and signal output terminal. An information signal is received by the microcontroller. The information signal is transferred to a communication signal by the transmitting-side communication circuit. A DC power is received by the induction reactance unit. The DC isolation unit avoids the transmitting-side communication circuit to be impacted by the DC power. The communication signal and the DC power are transmitted from the DC power and signal output terminal to an electric wire. The transmitting apparatus using DC carrier of the present invention can transmit the DC power and the communication signal at the same time with an electric wire to save labor cost and electric wire cost.
    Type: Application
    Filed: July 19, 2011
    Publication date: December 6, 2012
    Inventors: Tsang-Yi CHENG, Chia-Hsiang LI
  • Patent number: 8008807
    Abstract: An uninterruptible power supply includes an energy storage unit, an AC-to-DC converting circuit, a charging circuit, a selection circuit, a primary detecting circuit, a primary control circuit and a secondary control circuit. The primary detecting circuit is connected to an output loop of the uninterruptible power supply for detecting an operating status of the uninterruptible power supply and issuing a corresponding operating message. The primary control circuit is connected to the primary detecting circuit and the selection circuit for controlling operations of the uninterruptible power supply. The secondary control circuit is connected to the primary detecting circuit, the selection circuit and the primary control circuit for controlling operations of the uninterruptible power supply. The primary control circuit and the secondary control circuit are enabled or disabled according to the operating message.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: August 30, 2011
    Assignee: Delta Electronics, Inc.
    Inventors: Ping-Long Yang, Chia-Hsiang Li
  • Publication number: 20110156482
    Abstract: An uninterruptible power supply includes an AC-to-DC converting circuit, an energy storage unit, a first path-switching circuit, a second path-switching circuit, an integrated charge/discharge circuit and an operating control unit. If the input voltage is abnormal, the input terminal and the output terminal of the integrated charge/discharge circuit are respectively connected to the energy storage unit and the power supply output terminal, so that electric energy stored in the energy storage unit is transmitted to the power supply output terminal through the integrated charge/discharge circuit. Whereas, if the input voltage is normal, the input terminal and the output terminal of the integrated charge/discharge circuit are respectively connected to the power supply output terminal and the energy storage unit, so that the energy storage unit is charged by the integrated charge/discharge circuit.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 30, 2011
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Ping-Long Yang, Chia-Hsiang Li
  • Patent number: 7932636
    Abstract: An automatic start-up circuit for use in an uninterruptible power supply apparatus is provided. The uninterruptible power supply apparatus includes an energy storage unit and a switching circuit. The automatic start-up circuit includes an operating status detecting circuit and a secondary switch driving circuit. The operating status detecting circuit is connected to an energy storage unit connecting node for detecting an operating status of the energy storage unit through the energy storage unit connecting node, and generating an start-up control signal according to the operating status of the energy storage unit. The secondary switch driving circuit is connected to the operating status detecting circuit, a control terminal of the switching circuit and a common terminal for determining whether the switching circuit is automatically driven to be conducted to start up the uninterruptible power supply apparatus according to the start-up control signal.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: April 26, 2011
    Assignee: Delta Electronics, Inc.
    Inventors: Chia-Hsiang Li, Ping-Long Yang
  • Publication number: 20100148584
    Abstract: An uninterruptible power supply includes an energy storage unit, an AC-to-DC converting circuit, a charging circuit, a selection circuit, a primary detecting circuit, a primary control circuit and a secondary control circuit. The primary detecting circuit is connected to an output loop of the uninterruptible power supply for detecting an operating status of the uninterruptible power supply and issuing a corresponding operating message. The primary control circuit is connected to the primary detecting circuit and the selection circuit for controlling operations of the uninterruptible power supply. The secondary control circuit is connected to the primary detecting circuit, the selection circuit and the primary control circuit for controlling operations of the uninterruptible power supply. The primary control circuit and the secondary control circuit are enabled or disabled according to the operating message.
    Type: Application
    Filed: August 25, 2009
    Publication date: June 17, 2010
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Ping-Long Yang, Chia-Hsiang Li
  • Publication number: 20100096928
    Abstract: An automatic start-up circuit for use in an uninterruptible power supply apparatus is provided. The uninterruptible power supply apparatus includes an energy storage unit and a switching circuit. The automatic start-up circuit includes an operating status detecting circuit and a secondary switch driving circuit. The operating status detecting circuit is connected to an energy storage unit connecting node for detecting an operating status of the energy storage unit through the energy storage unit connecting node, and generating an start-up control signal according to the operating status of the energy storage unit. The secondary switch driving circuit is connected to the operating status detecting circuit, a control terminal of the switching circuit and a common terminal for determining whether the switching circuit is automatically driven to be conducted to start up the uninterruptible power supply apparatus according to the start-up control signal.
    Type: Application
    Filed: December 15, 2008
    Publication date: April 22, 2010
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Chia-Hsiang Li, Ping-Long Yang
  • Patent number: 7541695
    Abstract: Disclosed is an uninterruptible power supply including a controller; a first switch circuit; a second switch circuit; a transformer having a first winding connected to a load and the first switch circuit and a second winding connected to the second switch circuit; an energy accumulation device; a DC-DC converter for boosting a DC voltage outputted from the energy accumulation device; an inverter for converting a boosted DC voltage into a first AC voltage and delivering the AC voltage to the first winding. When the energy accumulation device is supplying power, the second winding generates a second AC voltage in response to the first AC voltage, thereby the second AC voltage can regulate the voltage level of the first AC voltage which is delivered to the load according to the connection status between the second switch circuit and the second winding.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: June 2, 2009
    Assignee: Delta Electronics, Inc.
    Inventor: Chia-Hsiang Li
  • Publication number: 20090109591
    Abstract: Disclosed is an inrush current protection circuit for preventing inrush energy from entering a circuit to be protected through a power input terminal of the circuit to be protected. The inrush current protection circuit includes a varistor connected to the power input terminal of the circuit to be protected for absorbing inrush energy, and a thermal fuse having one end connected with the varistor and the power input terminal of the circuit to be protected and having the other end connected to a power line, in which when the thermal fuse is blown out, the circuit to be protected is disconnected from the power line.
    Type: Application
    Filed: October 26, 2007
    Publication date: April 30, 2009
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Chia-Hsiang Li, Houng-Liang Chen
  • Publication number: 20070262650
    Abstract: Disclosed is an uninterruptible power supply including a controller; a first switch circuit; a second switch circuit; a transformer having a first winding connected to a load and the first switch circuit and a second winding connected to the second switch circuit; an energy accumulation device; a DC-DC converter for boosting a DC voltage outputted from the energy accumulation device; an inverter for converting a boosted DC voltage into a first AC voltage and delivering the AC voltage to the first winding. When the energy accumulation device is supplying power, the second winding generates a second AC voltage in response to the first AC voltage, thereby the second AC voltage can regulate the voltage level of the first AC voltage which is delivered to the load according to the connection status between the second switch circuit and the second winding.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 15, 2007
    Applicant: Delta Electronics, Inc.
    Inventor: Chia-Hsiang Li