Patents by Inventor Youngcheol Jang

Youngcheol Jang 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: 9406979
    Abstract: A secondary battery capable of assembling a bare cell and a protective circuit module (PCM) in a manner of mechanical connection without performing a molding is provided. The secondary battery includes a bare cell whose top surface is provided with an electrode terminal having a polarity, a first case covering the top surface of the bare cell, a second case covering a first side surface of the bare cell, a first lead tab coupling the electrode terminal to the PCM, and a second lead tab coupling a surface of the bare cell having another polarity to the protective circuit module. Both of the first and the second lead tabs are covered by the first case.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: August 2, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Nohyun Kwag, Youngcheol Jang
  • Patent number: 9236618
    Abstract: A rechargeable battery, and more particularly, a rechargeable battery having a function of detecting water contact. The area for detecting water contact is formed on the rechargeable battery or its component parts by applying water-soluble ink on a surface thereof. It is straightforward to form such a rechargeable battery and to easily determine whether the rechargeable battery or its component parts have been in contact with water.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: January 12, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Youngcheol Jang
  • Patent number: 9147864
    Abstract: A protective circuit module and a secondary battery including the same. The secondary battery includes: an electrode assembly, a can to house the electrode assembly, and a cap assembly to seal an opening of the can. The protective circuit module includes: a first module electrically connected to the cap assembly; a second module electrically connected to a closed end of the can; and a third module electrically connecting the first module and the second module. The first module includes a mounting portion that is disposed in a groove between the can and the cap assembly.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: September 29, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Youngcheol Jang, Eunok Kwak, Kyungwon Seo
  • Patent number: 9147863
    Abstract: A secondary battery, including a bare cell, a protective circuit module (PCM) disposed on a top surface of the bare cell, the PCM comprising an external terminal a top surface thereof, and a printed circuit board (PCB) terminal disposed on the external terminal, the PCB terminal being electrically connected to the external terminal and an external device.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: September 29, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seok Koh, Youngcheol Jang, Kyungho Park
  • Patent number: 9099726
    Abstract: Provided are a secondary battery that reduces space restriction during the formation of a protective circuit module (PCM) and improves reliability of a positive temperature coefficient (PTC) device and a method of fabricating the secondary battery. The secondary battery includes a battery cell including a cell tab and the PCM. The PCM includes a circuit board, a first terminal, a second terminal, and the PTC device. The circuit board includes an upwardly exposed external terminal. The first terminal is disposed below the circuit board and has one end connected to the cell tab and the extending other end. The second terminal is disposed below the circuit board and has one end connected to the external terminal and the extending other end. The PTC device is disposed between the first terminal and the second terminal and below the circuit board.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: August 4, 2015
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Hyeongsin Kim, Youngcheol Jang
  • Patent number: 9088032
    Abstract: Disclosed is a pack type secondary battery that can be assembled by a simple process. The secondary battery comprises: a bare cell; a protection circuit module including a circuit board and a supporting member to combine the circuit board with the bare cell; and a top case covering the circuit board of the protection circuit module, where the supporting member of the protection circuit module is provided with a first coupling part and the top case is provided with a second coupling part combined with the first coupling part and the first coupling part of the supporting member is combined with the second coupling part of the top case by an interference fit method.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: July 21, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Youngcheol Jang, Eunok Kwak
  • Patent number: 9065083
    Abstract: Disclosed is a lithium polymer battery, which includes: an electrode assembly; an outer case receiving the electrode assembly, where an electrode tab of the electrode assembly is withdrawn out of the outer case; a protection circuit module provided at one side of the outer case, where an inner connection terminal of the protection circuit module is connected to the electrode tab of the electrode assembly and provided in parallel to the withdrawn direction of the electrode tab. The lithium polymer battery can improve reliability and safety of an electrical coupling state between a bare cell and a protection circuit module and assembling workability between the electrode tab and connection terminals by mechanically and electrically coupling them to each other without bending the electrode tab.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: June 23, 2015
    Assignee: SAMSUNG SDI CO., LTD.
    Inventors: Youngcheol Jang, Eunok Kwak
  • Patent number: 8999536
    Abstract: A battery pack is disclosed. The battery pack includes at least two battery cells to provide a high capacity battery pack. The battery pack includes a single PCM assembly controlling at least two battery cells to decrease inferiority due to overcharge and overdischarge. Since a connector tab electrically connecting at least two battery cells to a single PCM assembly is provided, contacts are not separated during the swelling of the battery cells to prevent contact inferiority. A top case and a bottom case are provided to be coupled with at least two battery cells to maintain a secure coupling between the at least two battery cells.
    Type: Grant
    Filed: January 20, 2009
    Date of Patent: April 7, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Nohyun Kwag, Youngho Kim, Heongsin Kim, Youngcheol Jang, Seokryun Park
  • Patent number: 8968893
    Abstract: A secondary battery having a compact design by using planar lead plates. In the secondary battery, a third lead plate is arranged on a top side of a protective circuit module, while the first and second lead plates are planar and are arranged on a bottom side of the protective circuit module. Therefore, a coupling height of a bare cell to the protective circuit module can be minimized to allow for an increased capacity of the bare cell. The protective circuit module may include an accommodation portion, such as a groove or a through hole, to accommodate a plug of an electrolyte injection hole in the cap plate.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: March 3, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Youngcheol Jang
  • Patent number: 8945734
    Abstract: An easily assembled pack type secondary battery. The secondary battery includes a bare cell, a protection circuit module having a circuit board and coupled with the bare cell, and a top case covering the circuit board of the protection circuit module and having a coupling slot into which at least part of the circuit board is fitted. The secondary battery allows the top case to be attached to the protective circuit module and the bare cell without having to use an adhesive and without requiring an injection molding technique.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: February 3, 2015
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Youngcheol Jang, Eunok Kwak
  • Patent number: 8916278
    Abstract: A battery pack includes a battery cell including a cell tab, a protective circuit board including an internal terminal coupled to the cell tab and a positive temperature coefficient (PTC) device connected to the internal terminal, and a heat transfer member contacting the cell tab. The heat transfer member may be attached to the cell tab as well as the PTC device. Heat generated in the battery cell, the cell tab, and the internal terminal is quickly transferred to the PTC device through the heat transfer member to quickly interrupt current flow when the battery cell is exposed to high temperature. Therefore, the battery pack may have the improved stability and reliability.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: December 23, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Heongsin Kim, Youngcheol Jang
  • Patent number: 8871378
    Abstract: A secondary battery includes a bare cell including a can, an electrode assembly, and a cap assembly, wherein the cap assembly includes a protection circuit assembly.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: October 28, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kyungwon Seo, Youngcheol Jang
  • Patent number: 8854783
    Abstract: A battery pack that can quickly transfer heat from a battery cell to a positive temperature coefficient (PTC) to quickly cut off a current when the battery cell is heated to a high temperature. A battery pack includes: a battery cell including a cell tab; a protective circuit module including an internal terminal connected to the cell tab, a PTC connected to the internal terminal, and an interconnection pattern between the internal terminal and the PTC and electrically connecting the internal terminal to the PTC; and a heat transfer member including a surface contacting the interconnection pattern, and opposite sides respectively connected to the internal terminal and the PTC.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: October 7, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Eunok Kwak, Youngcheol Jang, Seok Koh
  • Patent number: 8841011
    Abstract: A secondary battery includes a bare cell having a can, a cap plate on the can, and an electrode terminal protruding from the cap plate; a protection circuit module on the bare cell, the protection circuit module including a circuit board; a temperature sensitive device coupled to the circuit board; and a first lead plate electrically coupled to the circuit board and to the electrode terminal.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: September 23, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Youngcheol Jang
  • Patent number: 8808904
    Abstract: A secondary battery with a protective circuit module including a rechargeable bare cell having a first electrode and a second electrode and a protective circuit module having a protective circuit for the rechargeable bare cell. A conductive bonding layer is located on the protective circuit module and a secondary protective element assembly is attached to the protective circuit module by the conductive bonding layer. A first lead plate electrically connects the secondary protective element assembly to the first electrode, and a second lead plate electrically connects the protective circuit module to the second electrode.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: August 19, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Youngcheol Jang, Nohyun Kwak, Sangjoo Lee
  • Patent number: 8691406
    Abstract: A secondary battery secondary battery includes a bare cell having an electrode terminal, and a protective circuit module having a circuit board and a lead plate. The protective circuit module is electrically connected to the bare cell such that the electrode terminal and the circuit board are connected to each other through the lead plate. The lead plate includes a first plate mounted on the circuit board, and a second plate foldably connected to the first plate.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: April 8, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Youngcheol Jang, Heongsin Kim
  • Patent number: 8691419
    Abstract: A cylindrical secondary battery having improved performance in a compression test and a collision test. The cylindrical battery including a ceramic layer coated on at least one of a cathode plate and an anode plate, and a center pin having a wall thickness of 0.05 to 0.1 mm, which is inserted into the center of an electrode assembly of the battery. The ceramic layer can have a thickness of 6.0 ?m to 8.0 ?m.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: April 8, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Myungro Lee, Youngcheol Jang, Cheolhee Hwang, Wanmook Lim, Wonchull Han, Hyorim Bak
  • Patent number: 8691429
    Abstract: Disclosed are a polymer battery pack and a method for manufacturing the same. In the polymer battery pack, a bare cell and a protection circuit member are separated from each other by a holder frame such that the bare cell is coupled to the inner side of the holder frame and the protection circuit member is coupled to the outer side of the holder frame. The method for manufacturing the polymer battery pack includes: coupling a bare cell to the inner side of a holder frame; electrically connecting the bare cell to a protection circuit member; coupling the protection circuit module to the holder frame; coupling a cover to the holder frame; attaching an external label to the cover; attaching a water sensitive paper to the cover; and performing a function test for the battery.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: April 8, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Heongsin Kim, Seok Koh, Youngcheol Jang
  • Patent number: 8685552
    Abstract: Disclosed is a secondary battery that enhances the coupling strength between a protection circuit module and a bare cell. The secondary battery includes: a bare cell; and a protection circuit module including a circuit board and at least one coupling member coupling the circuit board to the bare cell by welding, the coupling member including a first coupling portion having a substantially plate-like shape coupled to the bare cell by welding and at least a through-hole formed inside the edge of the first coupling portion.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: April 1, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Nohyun Kwag, Youngcheol Jang, Kyungwon Seo
  • Patent number: 8685551
    Abstract: Disclosed is a battery pack that can secure the mounting space of a circuit device in a circuit module, can simplify the assembling process of a bare cell and a circuit module, and can miniaturize the battery by lowering the height between the bare cell and the circuit module. The battery pack includes: a bare cell having a protruding electrode terminal insulated from the top surface thereof; a circuit module disposed on the bare cell and electrically connected to the bare cell, the circuit module having an insert hole or an insert recess formed in a region corresponding to the electrode terminal; a first lead plate coupled to the electrode terminal and inserted into the insert hole or the insert recess; and a second lead plate coupled to one side of the circuit module and extending to be connected to the top surface of the bare cell.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: April 1, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Seok Koh, Youngcheol Jang