公开(公告)号：US20190199197A1

公开(公告)日：2019-06-27

申请号：US16226260

申请日：2018-12-19

Applicant: FDK CORPORATION

Inventor： Kenji Hamada ,  Tadashi Sato ,  Norio Fukui

IPC: H02M1/08 ,  H02M3/335

Abstract: A switching power supply includes an insulated transformer, a full-bridge circuit which converts input DC power into AC power and outputs the AC power to a primary-side coil, an output circuit which converts AC power input from secondary-side coils into DC power and outputs the DC power, and a control circuit which controls the full-bridge circuit by using a phase shift method based on voltage output by the output circuit. When a measured value of the amount of phase shift determined from at least one of the voltage and current output by the output circuit is smaller than a theoretical value of the amount of phase shift corresponding to the switching power supply operating in a continuous current mode, the control circuit prolongs dead time used in the full-bridge circuit in accordance with the difference between the measured value and the theoretical value.

公开(公告)号：US20190187188A1

公开(公告)日：2019-06-20

申请号：US16225884

申请日：2018-12-19

Applicant: FDK CORPORATION

Inventor： Miyabi Ishikawa ,  Norio Fukui

IPC: G01R19/165 ,  G01R27/08 ,  H03K17/082

CPC classification number: G01R19/16547 ,  G01R27/08 ,  H02M3/158 ,  H02M3/1582 ,  H02M2001/0009 ,  H03K17/0822 ,  H03K2217/0027

Abstract: A detection circuit detects a current value obtained from a mathematically processed signal to be inputted in a former half period of bisected halves of an ON period of a switching element when step-down operation is performed. Moreover, the detection circuit detects a current value obtained from a mathematically processed signal to be inputted in a latter half period of bisected halves of an ON period of a switching element when step-up operation is performed.

公开(公告)号：US10177355B2

公开(公告)日：2019-01-08

申请号：US15562864

申请日：2016-01-05

Applicant: FDK CORPORATION

Inventor： Yusuke Ogawa

IPC: H01M2/10

Abstract: A battery pack includes a first frame, a second frame, and assembled batteries. The first frame includes a top edge and a bottom edge. The top edge includes an inner projecting piece, an outer projecting piece distanced from the inner projecting piece, an outer depressed part, and an inner depressed part. The bottom edge includes a center projecting piece that is disposed in a position corresponding to a gap between the inner projecting piece and the outer projecting piece when the bottom edge is engaged with the top edge of another first frame and that has a thickness fitting this gap, and an outer engagement projection and an inner engagement projection provided in positions corresponding to the outer depressed part and the inner depressed part.

公开(公告)号：US20180301701A1

公开(公告)日：2018-10-18

申请号：US15950168

申请日：2018-04-11

Applicant: FDK CORPORATION

Inventor： Yuki Ochiai ,  Naoaki Nishimura ,  Daisuke Hirata ,  Hiroshi Yanagi

IPC: H01M4/50 ,  H01M4/38 ,  H01M4/62 ,  H01M6/16 ,  H01M4/04 ,  H01M4/40 ,  H01M4/08

CPC classification number: H01M4/502 ,  H01M4/0404 ,  H01M4/08 ,  H01M4/382 ,  H01M4/405 ,  H01M4/623 ,  H01M4/625 ,  H01M4/64 ,  H01M6/16 ,  H01M2004/028

Abstract: A method for preparing cathode material for a lithium primary battery includes an active cathode material and an active anode material. The active cathode material is manganese dioxide, and the active anode material is either one of lithium metal and lithium alloy. The method includes: a first kneading step in which a boron compound and a thickening agent are kneaded with a diluent to prepare a paste made by dissolving the boron compound in the diluent; a second kneading step in which the paste is kneaded with a conductive additive; and a third kneading step in which the paste obtained in the second kneading step is kneaded with the active cathode material and a binder to prepare the cathode material in slurry form.

公开(公告)号：US20180226688A1

公开(公告)日：2018-08-09

申请号：US15946731

申请日：2018-04-06

Applicant: FDK CORPORATION

Inventor： Tsukasa Mano ,  Naoaki Nishimura ,  Yuya Iida ,  Ryuji Ito

IPC: H01M10/0585 ,  H01G11/24 ,  H01G11/52 ,  H01G11/58 ,  H01G11/78 ,  H01G11/84 ,  H01M2/16 ,  H01M2/02

CPC classification number: H01M10/0585 ,  H01G11/24 ,  H01G11/52 ,  H01G11/58 ,  H01G11/78 ,  H01G11/82 ,  H01G11/84 ,  H01M2/0207 ,  H01M2/021 ,  H01M2/0212 ,  H01M2/026 ,  H01M2/0267 ,  H01M2/0287 ,  H01M2/1653 ,  H01M2/168 ,  H01M2/1686 ,  H01M10/052 ,  H01M2220/30

Abstract: A laminated rechargeable element includes a jacket and an electrode assembly. The electrode assembly is accommodated in the jacket together with an electrolyte, and includes a separator, a sheet-shaped positive electrode and a sheet-shaped negative electrode. The electrode assembly is formed by laminating the positive electrode and the negative electrode with the separator interposed between the positive electrode and the negative electrode. The separator includes an ion-permeable substrate and ion-permeable bonding layers formed on a top surface and a bottom surface of the substrate. The positive electrode and the negative electrode are welded to respective bonding layers of the separator. The jacket is formed of two flat, rectangular stainless steel laminate films welding together at their peripheries, and is welded to the electrode assembly.

公开(公告)号：US20180226628A1

公开(公告)日：2018-08-09

申请号：US15940987

申请日：2018-03-30

Applicant: FDK CORPORATION

Inventor： Yukitomo Takasu ,  Makoto Sakaguchi

IPC: H01M2/34 ,  H01M2/10 ,  H01M2/20

CPC classification number: H01M2/34 ,  H01M2/022 ,  H01M2/10 ,  H01M2/105 ,  H01M2/20 ,  H01M2/202 ,  H01M2/204 ,  H01M2200/00 ,  H01M2220/30

Abstract: A protection element attachment tab made of a single flat metal plate and mounted on positive and negative electrode terminals of a cylindrical cell to connect between the positive electrode terminal formed on one end surface of the cell and the negative electrode terminal formed on another end surface of the cell with a protection element that prevents overdischarge between the electrode terminals. The protection element attachment tab includes a planar region facing the end surface when mounted on the electrode terminal; a first protrusion protruding from the planar region in a direction along the planar region, a leading end of the first protrusion protruding outward from the end surface of the cell when the planar region is mounted on the electrode terminal; and a second protrusion shorter than the first protrusion, protruding from the planar region in a direction different from the first protrusion along the planar region.

公开(公告)号：US20180205044A1

公开(公告)日：2018-07-19

申请号：US15872994

申请日：2018-01-17

Applicant: FDK CORPORATION

Inventor： Kanji Urushihara

IPC: H01M2/02 ,  H01M2/04 ,  H01M2/30 ,  H01M4/06 ,  H01M4/40 ,  H01M4/66 ,  H01M6/16

CPC classification number: H01M2/022 ,  H01M2/0232 ,  H01M2/024 ,  H01M2/027 ,  H01M2/0285 ,  H01M2/0426 ,  H01M2/046 ,  H01M2/0486 ,  H01M2/06 ,  H01M2/08 ,  H01M2/22 ,  H01M2/30 ,  H01M4/06 ,  H01M4/405 ,  H01M4/669 ,  H01M6/16 ,  H01M10/052 ,  H01M2220/30

Abstract: A sealing body for sealing an upper opening of a battery can having a tube shape with a closed bottom includes an electrode terminal, a sealing plate, and gaskets. The electrode terminal includes a flat plate-shaped stepped portion in an area of a lower surface of a flat plate-shaped terminal portion. The electrode terminal has an inserting portion extending downward in a columnar shape on a lower surface of the stepped portion, and a protrusion in a non-circular planar shape that goes around the inserting portion. The sealing plate has an opening, and has an upper surface and a lower surface on which a non-circular sealing-plate recessed portion and a sealing-plate protruding portion are formed. The gaskets have a shaft portion inserted through the opening of the sealing plate, and a protruding portion that engages the sealing-plate recessed portion and a recessed portion that engages the sealing-plate protruding portion.

公开(公告)号：US09923178B2

公开(公告)日：2018-03-20

申请号：US15079511

申请日：2016-03-24

Applicant: FDK TOTTORI CO., LTD. ,  FDK CORPORATION

Inventor： Kanji Urushihara ,  Shohei Itagaki

IPC: H01M2/04 ,  H01M2/02 ,  H01M2/06 ,  H01M6/14 ,  F16J15/06 ,  H01M2/08 ,  H01M6/16

CPC classification number: H01M2/046 ,  H01M2/0482 ,  H01M2/06 ,  H01M2/08 ,  H01M6/14 ,  H01M6/16

Abstract: A sealing member 40 to seal an opening of a battery can, the sealing member being used to configure a tube-shaped battery provided with a bottomed tube-shaped battery can and a power generating element that has been arranged inside the battery can, the sealing member 40 includes an electrode terminal that is to be electrically connected to the power generating element, a sealing plate 41, insulating gaskets 42a, 42b, and a washer 44. An inserting part 43b extending from the electrode terminal 43 is inserted through these elements so that the elements are integrally tightened. The insulating gasket 42a is provided with a protruding part 42a1 having an appropriate horizontal section shape, and the sealing plate 41 adjacent to the insulating gasket is provided with a recess part 41a that has been formed in a shape corresponding to the protruding part 42a1.

公开(公告)号：US09906052B2

公开(公告)日：2018-02-27

申请号：US14890132

申请日：2014-04-11

Applicant: FDK CORPORATION

Inventor： Takashi Kabasawa ,  Takuya Harada ,  Hiroshi Fukuda ,  Zenjirou Uchida ,  Masanori Yamashita

IPC: H02J7/00

CPC classification number: H02J7/0021 ,  H02J7/0022 ,  H02J7/0068 ,  H02J7/0072 ,  H02J7/0081 ,  H02J7/0091

Abstract: A power supply device includes a battery module in which batteries are connected in series; a negative electrode output terminal to which a negative electrode terminal of the battery module is connected; a positive electrode output terminal to which a positive electrode terminal of the battery module and a connection point between predetermined batteries are individually connected through discharging switches; an output voltage detecting circuit for detecting an output voltage; a charging current adjusting circuit for adjusting the charging current of the battery module; thermistors for detecting the state-of-charge of the battery module; and a control device for controlling the charge and discharge of the battery module, wherein the control device includes means for controlling the discharging switches, so that the output voltage is within a specific range, and means for controlling the charging current adjusting circuit on the basis of the state-of-charge of each battery of the battery module.

公开(公告)号：US20170208694A1

公开(公告)日：2017-07-20

申请号：US15411726

申请日：2017-01-20

Applicant: FDK CORPORATION

Inventor： Daisuke Hirata ,  Tsukasa Mano ,  Naoaki Nishimura ,  Ryuji Ito ,  Akihiro Yamamoto

IPC: H05K3/30 ,  H01M10/0525 ,  H01M6/14 ,  H05K1/18 ,  H01M2/30 ,  H01G11/26 ,  H01G11/76 ,  H01G11/82 ,  H01M10/04 ,  H01M2/02

Abstract: A laminate-type power storage element has a flat body and an interior layered flat plate-shaped electrode body. A positive electrode terminal plate is mounted to a positive electrode of the electrode body and is guided outside from a predetermined margin of the body. A negative electrode terminal plate is mounted to a negative electrode of the electrode body and guided in the same direction. A film member spans across both electrode terminal plates. The film member is made by layering an insulating heat-resistant film and an adhesive to thermocompression bond the heat-resistant film to a matter to be adhered to. The film member is thermocompression bonded to the electrode terminal plate at a region facing principal surfaces of the positive and the negative plates, and is thermocompression bondable to the matter to be adhered to in a region that does not face the respective principal surfaces.