Patents by Inventor Chang-Hyun Sung

Chang-Hyun Sung 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).

  • Publication number: 20220293619
    Abstract: A memory device includes a cell wafer including a memory cell array; and a peripheral wafer including a row control circuit, a column control circuit and a peripheral circuit which control the memory cell array, and stacked on and bonded to the cell wafer in a first direction. The peripheral wafer includes a first substrate having a first surface and a second surface which face away from each other in the first direction; a first logic structure disposed on the first surface of the first substrate, and including the row control circuit and the column control circuit; and a second logic structure disposed on the second surface of the first substrate, and including the peripheral circuit.
    Type: Application
    Filed: May 31, 2022
    Publication date: September 15, 2022
    Inventors: Jin Ho KIM, Kwang Hwi PARK, Sang Hyun SUNG, Sung Lae OH, Chang Woon CHOI
  • Publication number: 20220238934
    Abstract: The battery module according to one embodiment of the present disclosure includes a battery cell stack in which a plurality of battery cells are stacked; and a sensing assembly located on the battery cell stack. The sensing assembly includes a main body located on the battery cell stack and a module connector connected to the main body. The main body is a flexible printed circuit (FPC) or a flexible flat cable (FFC), and the main body includes a heating wire circuit.
    Type: Application
    Filed: July 15, 2020
    Publication date: July 28, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Taehwan Roh, Jong Cheol Lee, Chang Hyun Sung, Geunhoe Huh
  • Patent number: 11380702
    Abstract: A memory device includes a cell wafer including a memory cell array; and a peripheral wafer including a row control circuit, a column control circuit and a peripheral circuit which control the memory cell array, and stacked on and bonded to the cell wafer in a first direction. The peripheral wafer includes a first substrate having a first surface and a second surface which face away from each other in the first direction; a first logic structure disposed on the first surface of the first substrate, and including the row control circuit and the column control circuit; and a second logic structure disposed on the second surface of the first substrate, and including the peripheral circuit.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: July 5, 2022
    Assignee: SK hynix Inc.
    Inventors: Jin Ho Kim, Kwang Hwi Park, Sang Hyun Sung, Sung Lae Oh, Chang Woon Choi
  • Patent number: 11349159
    Abstract: Provided are a battery management system and a battery pack including the same. The battery management system includes a plurality of slave controllers, a plurality of temperature sensors, and a master controller. The plurality of temperature sensors are disposed in a plurality of different regions within the battery pack in a distributed fashion. The master controller is communicably coupled to the plurality of temperature sensors through a wired communication network. The master controller is communicably coupled to the plurality of slave controllers through a wireless communication network. The master controller determines a position of each of the plurality of slave controllers based on a temperature value of each region measured by the plurality of temperature sensors.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: May 31, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Ji-Won Hwang, Yean-Sik Choi, Ji-Eun Kim, Chang-Hyun Sung, Sang-Hoon Lee
  • Patent number: 11342009
    Abstract: A device and a method for equalizing and precharging a cell module, which may form a circuit for performing a corresponding operation by a converter unit by selectively connecting the converter unit and one or more cell modules by controlling a conduction state of a switching unit based on an operation which the converter intends to perform.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: May 24, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Chang Hyun Sung, Sang Hoon Lee, Yean Sik Choi
  • Patent number: 11307254
    Abstract: A system of predicting a failure rate of a contactor before the generation of a failure by counting a lifespan index of the contactor based on normality of through-currents of a primary side and a secondary side of the contactor, and determining that a failure rate of the contactor increases when a count value for an abnormal through-current exceeds a predetermined threshold value.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: April 19, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Hyunki Cho, Chang Hyun Sung, Sang Hoon Lee, Yean Sik Choi
  • Publication number: 20220085623
    Abstract: A cell balancing apparatus of a battery module in which a first battery cell, a plurality of second battery cells, and a third battery cell are connected in series is provided. A first terminal of a first inductor is connected to a negative electrode of the first battery cell, and a first terminal of a second inductor is connected to a positive electrode of the third battery cell. A first transistor is connected between a second terminal of the first inductor and a second terminal of the second inductor. A first active element is connected between a positive electrode of the first battery cell and the second terminal of the first inductor, and a second active element is connected between a negative electrode of the third battery cell and the second terminal of the second inductor.
    Type: Application
    Filed: October 20, 2020
    Publication date: March 17, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventor: Chang Hyun SUNG
  • Publication number: 20220077710
    Abstract: Provided are a battery controller, a wireless battery control system, a battery pack and a battery balancing method. The battery controller is for a battery module comprising a positive terminal, a negative terminal and a plurality of battery cells electrically connected in series between the positive terminal and the negative terminal. The battery controller comprises a voltage measuring unit to generate a voltage signal indicating a cell voltage of each of the plurality of battery cells, and a control module. The control module wirelessly transmits sensing data indicating the cell voltage of each of the plurality of battery cells while the control module is operating using a first cell voltage of a bottommost cell of the plurality of battery cells as power for operating the control module.
    Type: Application
    Filed: May 7, 2020
    Publication date: March 10, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventor: Chang-Hyun SUNG
  • Patent number: 11258274
    Abstract: The present disclosure relates to an apparatus and method for equalizing the charge of a plurality of battery modules while balancing the plurality of battery modules included in a battery pack. The present disclosure has an advantage of allowing easy manufacture of the battery pack with a reduced size since of the battery pack connectors may be simplified and the volume of wire harness may be reduced.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: February 22, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventor: Chang-Hyun Sung
  • Patent number: 11223072
    Abstract: Provided is an apparatus for assigning identification information to a plurality of slave battery management units. The apparatus assigns different identification information to a plurality of slave battery management units. The apparatus includes: a casing jig configured to at least partially cover the plurality of slave battery management units; a wireless communication unit including a plurality of antennas disposed so as to correspond one-to-one to the plurality of slave battery management units; and a controller configured to control the wireless communication unit so as to transmit a wireless signal including different identification information to the plurality of slave battery management units.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: January 11, 2022
    Assignee: LG Chem, Ltd.
    Inventors: Ji-Won Hwang, Yean-Sik Choi, Ji-Eun Kim, Chang-Hyun Sung, Sang-Hoon Lee
  • Patent number: 11205806
    Abstract: A battery module equalization apparatus includes a plurality of slave controllers each electrically connected to the plurality of battery modules to measure voltage values of the plurality of battery modules, and having a slave charging/discharging channel through which the current that charges and discharges each battery module flows, and a master controller that receives the voltage value of each battery module from the plurality of slave controllers, selects at least one of the plurality of slave controllers based on the received voltage value, and transmits a CHARGE or DISCHARGE command to the at least one selected slave controller, and having a master charging/discharging channel through which the charging current supplied to the at least one slave controller and the discharging current supplied from the at least one slave controller flow.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: December 21, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Chang-Hyun Sung, Sang-Hoon Lee, Yean-Sik Choi
  • Patent number: 11193981
    Abstract: An insulation resistance calculation apparatus according to an embodiment of the present disclosure includes a switching unit including a first switch and a second switch that are independently controlled, a first protective resistor and a first reference resistor connected in series between a positive electrode terminal of a battery and a ground when the first switch is turned on, a second protective resistor and a second reference resistor connected in series between a negative electrode terminal of the battery and the ground when the second switch is turned on, a voltage measuring unit configured to measure a first detection voltage applied to the first reference resistor and a second detection voltage applied to the second reference resistor, and a processor configured to determine if a measurement error occurred in measured values of the first detection voltage and measured values of the second detection voltage.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: December 7, 2021
    Inventors: Ji-Hoon Kim, Chang-Hyun Sung
  • Patent number: 11177669
    Abstract: An apparatus and a method of equalizing a battery module supplies an equalization current to a battery module which is diagnosed to have abnormality via an equalization current supply circuit when an abnormality is generated in a state of charge (SoC) of one or more battery modules, and equalize the SoC of the one or more battery modules.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: November 16, 2021
    Assignee: LG CHEM, LTD.
    Inventor: Chang Hyun Sung
  • Patent number: 11165263
    Abstract: Disclosed are a wireless battery management system and a method for protecting a battery pack using the same. The battery pack includes a plurality of battery modules and at least one relay. The wireless battery management system includes a plurality of slave controllers electrically coupled to the plurality of battery modules one-to-one, and a master controller wirelessly coupled to each slave controller so as to be able to communicate with each slave controller. Each slave controller measures an operational parameter of the battery module electrically coupled thereto. Each slave controller wirelessly transmits a fault signal to the master controller when the measured operational parameter is outside of a predetermined normal range. The master controller turns off the at least one relay when the fault signal is received.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: November 2, 2021
    Inventors: Chang-Hyun Sung, Jae-Dong Park, Sang-Hoon Lee, Yean-Sik Choi
  • Publication number: 20210336301
    Abstract: Provided are a battery management system and a battery pack including the same. The battery management system includes a plurality of slave controllers, a plurality of temperature sensors, and a master controller. The plurality of temperature sensors are disposed in a plurality of different regions within the battery pack in a distributed fashion. The master controller is communicably coupled to the plurality of temperature sensors through a wired communication network. The master controller is communicably coupled to the plurality of slave controllers through a wireless communication network. The master controller determines a position of each of the plurality of slave controllers based on a temperature value of each region measured by the plurality of temperature sensors.
    Type: Application
    Filed: September 4, 2018
    Publication date: October 28, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Ji-Won HWANG, Yean-Sik CHOI, Ji-Eun KIM, Chang-Hyun SUNG, Sang-Hoon LEE
  • Publication number: 20210286664
    Abstract: A battery management system (BMS) recognition system, comprising: a master BMS including a master light emitter, the master BMS being configured to flicker the master light emitter to transmit an operation mode shifting signal to a slave BMS when it is intended to shift an operation mode of the slave BMS; and a slave BMS including a slave light receiver configured to correspond to the master light emitter, the slave BMS being configured to: recognize the flickering of the master light emitter through the slave light receiver; and shift the operation mode thereof in response to the operation mode shifting signal.
    Type: Application
    Filed: December 17, 2019
    Publication date: September 16, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Ji-Won HWANG, Chang-Hyun SUNG
  • Patent number: 11072242
    Abstract: An off-prevention circuit has a battery management system and a contactor multi-connected via a plurality of positive electrode terminals and a plurality of negative electrode terminals provided in each of the battery management system and the contactor. Even when any one connection among the connections of the plurality of positive electrode terminals and the plurality of negative electrode terminals is disconnected or opened, it is possible to maintain supply of power supplied from the battery management system to the contactor through another connection of the positive electrode terminal and the negative electrode terminal.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: July 27, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Ho Byung Yoon, Chang Hyun Sung
  • Publication number: 20210184270
    Abstract: A battery pack management device capable of reducing power consumption while transmitting and receiving data between a master BMS and a slave BMS by using a wireless communication method. The battery pack management device according to the present disclosure includes: a master BMS including an external communicator, an internal communicator, and a master controller and a slave BMS including a power supply, a state measurement sensor, a slave wireless communicator, and a slave controller.
    Type: Application
    Filed: March 2, 2021
    Publication date: June 17, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Chang-Hyun SUNG, Jae-Dong PARK, Sang-Hoon LEE, Yean-Sik CHOI
  • Patent number: 10971763
    Abstract: A battery pack management device capable of reducing power consumption while transmitting and receiving data between a master BMS and a slave BMS by using a wireless communication method. The battery pack management device according to the present disclosure includes: a master BMS including an external communicator, an internal communicator, and a master controller and a slave BMS including a power supply, a state measurement sensor, a slave wireless communicator, and a slave controller.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: April 6, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Chang-Hyun Sung, Jae-Dong Park, Sang-Hoon Lee, Yean-Sik Choi
  • Publication number: 20210082480
    Abstract: A device and a method for equalizing and precharging a cell module, which may form a circuit for performing a corresponding operation by a converter unit by selectively connecting the converter unit and one or more cell modules by controlling a conduction state of a switching unit based on an operation which the converter intends to perform.
    Type: Application
    Filed: October 15, 2018
    Publication date: March 18, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Chang Hyun SUNG, Sang Hoon LEE, Yean Sik CHOI