Patents Assigned to LSI
  • Inverter assembly without galvanic isolation
    Patent number: 9577507
    Abstract: Disclosed is an inverter assembly without galvanic isolation, the inverter assembly including a PCB mounted with a power supply circuit unit, an inverter unit, an analogue circuit unit and a controller, a first ground circuit pattern to supply a ground power to the power supply circuit unit and the inverter unit, a second ground circuit pattern to supply the ground power to the analogue circuit unit, a third ground circuit pattern to supply the ground power to the controller, a first bead between the first ground circuit pattern and the second ground circuit pattern to isolate an impedance between the first ground circuit pattern and the second ground circuit pattern, and a second bead between the second ground circuit pattern and the third ground circuit pattern to isolate an impedance between the second ground circuit pattern and the third ground circuit pattern.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: February 21, 2017
    Assignee: LSIS CO., LTD.
    Inventors: Deokyoung Lim, Chun Suk Yang
  • Magnetic switch
    Patent number: 9570258
    Abstract: The present invention relates to a magnetic switch, and more particularly, to a magnetic switch provided with a permanent magnet disposed at an outside of an upper frame and an externally fitted permanent magnet holder to reduce a number of components and facilitate maintenance.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: February 14, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Jinhee Park
  • Apparatus and method for data acquisition
    Patent number: 9571369
    Abstract: A data acquisition apparatus is provided. The data acquisition apparatus includes a local data storage unit; a data acquisition unit acquiring data; and a control unit storing data acquired by the data acquisition unit in the local data storage unit, wherein when stored data exceeds a predetermined capacity, the control unit transmits data to a history server, and when it is confirmed by the history server that data transmission is successful, the control unit deletes corresponding data from the local data storage unit.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: February 14, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Yong Ik Lee
  • Electric vehicle and method of operating using an SAE standard and user terminal
    Patent number: 9566873
    Abstract: An electric vehicle charges a battery through an electric vehicle power supply apparatus, and periodically checks a current charged state of the battery during a charging operation. During the charging operation, the electric vehicle transmits to a user terminal a first charging information notifying message including information on a current charged state of the battery. When the completion of charging of the battery is detected, the electric vehicle transmits to the user terminal a second charging information notifying message providing notification of the completion of charging of the battery.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: February 14, 2017
    Assignee: LSIS CO., LTD.
    Inventors: Sajjad Hussain Chauhdary, Kwang Soo Hahn
  • Transformer for power line communication
    Patent number: 9570232
    Abstract: Disclosed is a transformer for power line communication, capable of performing power line communication without being influenced by voltage attenuation due to voltage conversion. The transformer for power line communication includes: a transforming unit configured to convert a high primary voltage into a low secondary voltage, or convert a low secondary voltage into a high primary voltage; a separation unit configured to separate a data signal from a primary voltage input thereto; and a coupling unit configured to couple the data signal with the low secondary voltage.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: February 14, 2017
    Assignee: LSIS CO., LTD.
    Inventors: Chang Sung You, Seong Joon Lee
  • Electrical contact materials and method for preparing the same
    Patent number: 9570207
    Abstract: Disclosed are electrical contact materials and a method for preparing the same. The electrical contact material includes (i) one or more kinds of metals selected from the group consisting of silver (Ag), copper (Cu) and gold (Au), and an alloy of nickel (Ni); and (ii) carbon nano tubes (CNTs) coated with Ag nanoparticles, Ag plated CNTs, or Ag nanowires, or (i) one or more kinds of metals selected from the group consisting of Ag, Cu, Ni and Au; (ii) a metal oxide that is cadmium oxide, indium oxide, tin oxide, zinc oxide or mixture thereof; and (iii) CNTs coated with Ag nanoparticles, Ag plated CNTs, or Ag nanowires. Accordingly, it is possible to reduce the content of high-priced Ag and to obtain excellent electrical and mechanical properties.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: February 14, 2017
    Assignees: LSIS CO., LTD., Research & Business Foundation SUNGKYUNKWAN UNIVERSITY
    Inventors: Ki Hun Park, In Chan Song, Seung Hyun Baik, Dong Mok Lee, Jeong Hyeon Sim
  • Apparatus for controlling power supply
    Patent number: 9570911
    Abstract: This specification relates to a power supply control apparatus. In order to solve problems of a power supply control only with respect to a preset time slot and difficulties in power supply to a plurality of consumers and metering of power supplied, which are the drawbacks of the related art electronic power meter, the power supply control apparatus can store or supply power according to a comparison result between a preset reference and a real-time pricing rate. Accordingly, electric charges, which are decided according to an amount of power used and reflect real-time rates thereto, can be saved and an appropriate power supply and an appropriate power reception of a consumer according to the real-time pricing rate can be allowed.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 14, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Gwon Hwan Hong
  • Remote terminal device and method of operating the same
    Patent number: 9563592
    Abstract: Provided is a remote terminal device having an industrial versa module eurocard bus (VMEbus) structure and including a main module that receives control logic information of a field device from an input/output module, and a programmable logic controller (PLC) function module that receives the control logic information from the main module, performs a logic corresponding to the control logic information, and outputs a result of the performed logic. The PLC function module includes a dual port RAM including a plurality of memory areas, and a PLC chip that reads the control logic information written on one of the plurality of memory areas, performs the logic corresponding to the read control logic information, and outputs the result of the performed logic to another one of the plurality of memory areas.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: February 7, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Sung Sik Ham
  • HIGH VOLTAGE RELAY DEVICE
    Publication number: 20170032913
    Abstract: A high voltage relay device according to the present invention includes fixed contacts, a movable contact provided at one side of the fixed contacts and contactable with or separated from the fixed contacts, fixed-side arc electrodes coupled to the fixed contacts, and a movable-side arc electrode coupled to one side of the movable contact and contactable with or separated from the fixed-side arc electrodes when the movable contact is brought into contact with or separated from the fixed contacts, whereby a generation of arc from primary electrodes when current flows and is cut off can be prevented so as to enhance reliability of the primary electrodes, and also usage of specialized materials may result in reduction of material costs.
    Type: Application
    Filed: May 20, 2016
    Publication date: February 2, 2017
    Applicant: LSIS CO., LTD.
    Inventors: Kwangsik LEE, Moonjo KANG
  • METHOD FOR DESIGNING MULTIPLE TUNED FILTER IN HIGH VOLTAGE DIRECT CURRENT SYSTEM
    Publication number: 20170032070
    Abstract: A method for designing a multiple tuned filter (MTF) in a high voltage direct current (HVDC) system includes setting an input parameter constituting the MTF; setting a resonance frequency of the MTF; extracting at least one LC combination case constituting the MTF on the basis of the input parameter and the resonance frequency; performing optimization for harmonic reduction on the LC combination case; and extracting an LC combination case determined based on a result obtained by performing the optimization.
    Type: Application
    Filed: May 24, 2016
    Publication date: February 2, 2017
    Applicant: LSIS CO., LTD.
    Inventor: Yi Kyung CHYUN
  • Minimally invasive surgical suturing device and method
    Patent number: 9554781
    Abstract: A minimally invasive surgical suturing device has a shaft; a needle slideably coupled to the shaft and having a ferrule engaging end; and a guide tip having a ferrule receiving aperture and moveably coupled to the shaft for selectable movement between a retracted position and an enabled position. In a related method, a distal shaft end, having a guide tip in a retracted position, is passed through a minimally invasive entry point and into a body cavity. The guide tip having a ferrule receiving aperture is actuated into an enabled position such that an insertion profile of the guide tip and shaft in the enabled position is larger than an access dimension of the minimally invasive entry point. A needle, slideably coupled to the shaft and having a ferrule engaging end, is advanced on a path substantially parallel to the shaft, toward and in alignment with the ferrule receiving aperture.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: January 31, 2017
    Assignee: LSI Solutions, Inc.
    Inventor: Jude S. Sauer
  • Apparatus for estimating capacitance of DC-link capacitor in inverter
    Patent number: 9557360
    Abstract: Disclosed herein is a capacitance estimation apparatus of a DC-link capacitance in an inverter. The apparatus according to the present invention may estimate a DC-link voltage, and compare it with a ripple size of the measured DC-link voltage to estimate a DC-link capacitance. According to the present invention, the capacitance of the DC-link capacitance contained in the inverter may be estimated in real time to detect the fault status in real time.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: January 31, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Anno Yoo
  • EXTERNAL CONNECTOR OF VEHICLE BATTERY PACK
    Publication number: 20170025663
    Abstract: An external connector according to the present invention is connected to a battery pack provided with a battery module, a converter stepping down a voltage of the battery module to output to the exterior and stepping up an externally-input voltage to supply to the battery module, and a case accommodating the battery module and the converter therein, and the external connector includes a connector plate coupled to a connector exposing opening formed through the case so as to hermetically seal the connector exposing opening, and coupling bolts each having one end inserted into the connector plate and another end exposed, and connection bus bars each having one end forming a connection terminal and inserted into the connector plate so as to be exposed in the same direction as the coupling bolt, and another end coupled to a corresponding main bus bar connected to the battery module and the converter.
    Type: Application
    Filed: June 8, 2016
    Publication date: January 26, 2017
    Applicant: LSIS CO., LTD.
    Inventor: Kyooseok KIM
  • Electric connector and housing having a simple mounting structure
    Patent number: 9553397
    Abstract: Provided is an electric connector for connecting electric equipment to a power device. The electric connector includes a connector body defining an outer appearance thereof, a connection bar disposed on the connector body to electrically the connect electric equipment to the power device, an insertion part disposed on the connector body, the insertion part being inserted into the electric equipment, and a sealing disposed on a shaft of the insertion part in a circumferential direction.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: January 24, 2017
    Assignee: LSIS CO., LTD.
    Inventors: Jun Seok Eom, Kyoo Seok Kim
  • Vacuum interrupter
    Patent number: 9552946
    Abstract: The present disclosure relates to a vacuum interrupter, and particularly, to a vacuum interrupter having enhanced performance of discharging air from the interior of a bellows in a breaking operation.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: January 24, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Jaeseop Ryu
  • Power converter
    Patent number: 9554492
    Abstract: A power converter is provided. The power converter includes a heat sink provided with a holding unit, a plurality of semiconductor devices disposed on the heat sink, and a fixing assembly pressing each of the semiconductor devices toward the heat sink to fix the semiconductor device. The fixing assembly includes a lower push unit disposed on the semiconductor device, and an upper push unit disposed on the lower push unit to press the lower push unit downward, the upper push unit being coupled to the holding unit. The upper push unit includes a central bent part that partially protrudes downward, an insertion part disposed on each of both ends of the central bent part in a left/right direction, the insertion part having a left/right distance therebetween that gradually increases upward, and a fixing bar inserted into the insertion part.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: January 24, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Jun Seok Eom
  • RELAY FOR ELECTRONIC VEHICLE INCLUDING PERMANENT MAGNET AND METHOD OF FABRICATING THEREOF
    Publication number: 20170018386
    Abstract: The present invention relates to a relay for an electric vehicle and a method of manufacturing the same, and more particularly, a relay for an electric vehicle where a permanent magnet is integrally formed with a housing formed of a ceramic chamber, and a method of manufacturing the same. The relay, capable of rapidly executing current interruption includes: a fixed contact; a movable contact formed to contact or to be separated from the fixed contact; a shaft connected to the movable contact, and configured to move the movable contact; a housing configured to accommodate therein the fixed contact and the movable contact; an actuator configured to drive the shaft; and a permanent magnet integrally formed with the housing, and configured to extend an arc generated between the fixed contact and the movable contact. The permanent magnet includes an alnico-based material or a neodymium-based material.
    Type: Application
    Filed: May 3, 2016
    Publication date: January 19, 2017
    Applicant: LSIS CO., LTD.
    Inventor: Kwangsik LEE
  • LATCH RELAY
    Publication number: 20170018385
    Abstract: A latch relay includes a frame, a bobbin installed in the frame and having a coil wound therearound, first and second yokes provided as magnetic bodies, a rotary mover rotating in a clockwise direction or in a counterclockwise direction between head portions of the first and second yokes, first and second fixed contactors installed to be spaced apart from one another and parallel to each other within the frame, a movable contactor having one end connected to the second fixed contactor, a transmission lever having one end coupled to one side of the rotary mover to make a vertical movement, a support member fixedly installed on one side of the transmission lever, and an elastic member providing contact force such that the movable contactor is brought into contact with the first fixed contactor or separated from the first fixed contactor, while moving according to a movement of the transmission lever.
    Type: Application
    Filed: June 28, 2016
    Publication date: January 19, 2017
    Applicant: LSIS CO., LTD.
    Inventor: Yeonsoon CHOI
  • STRUCTURE OF SWITCHGEAR WITH ARC ELIMINATOR
    Publication number: 20170018913
    Abstract: The present invention relates to a structure of a switchgear with an arc protection system including an arc optical sensor to detect an arc, a relay to determine an occurrence or non-occurrence of a fault current by receiving an arc signal detected by the arc optical sensor, and an arc eliminator to earth an arc-generated side bus bar in response to an operating signal with respect to the determined fault current, wherein the arc eliminator has a test position or a service position within the switchgear.
    Type: Application
    Filed: May 10, 2016
    Publication date: January 19, 2017
    Applicant: LSIS CO., LTD.
    Inventor: Menglei ZHENG
  • Switchboard
    Patent number: 9548171
    Abstract: Disclosed is a switchboard. The switchboard includes a switchboard case with a built-in circuit breaker, a door mounted on the switchboard case in a hinge structure to be opened or closed and configured to include a door hook including an inclined surface at a front end, an external manipulation handle provided at an outer side of the switchboard case and configured to manually, externally manipulate a switch-on or off operation of the circuit breaker, and a catching member disposed in the switchboard case to be contactable with the inclined surface of the door hook. The catching member rotates by contacting the inclined surface of the door hook according to a closing operation of the door, and a locked state of the door is maintained by catching the door hook on one side corner of the catching member.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: January 17, 2017
    Assignee: LSIS CO., LTD.
    Inventor: Jun Yong Jang