公开(公告)号：US20220294025A1

公开(公告)日：2022-09-15

申请号：US17653282

申请日：2022-03-02

Applicant: FDK CORPORATION

Inventor： Akira Saguchi

IPC: H01M10/28 ,  H01M4/24

Abstract: An electrode has a band-shaped core and an electrode mixture layer carried by the core to form a spiral electrode assembly with a gas generating electrode and a separator for an alkaline secondary battery. The electrode in the spiral shape has a first circumference portion, an intermediate portion, and an outermost circumference portion. The first circumference portion is a starting portion for winding into the spiral shape. The intermediate portion is a second and following circumferences of the spiral shape. The outermost circumference portion has an inner surface only which faces the gas generating electrode. The electrode mixture layer includes a reactant that develops a reaction consuming gas generated from the gas generating electrode. An amount of the reactant in the first circumference portion is more than those in the intermediate portion and/or the outermost circumference portion.

公开(公告)号：US20220258910A1

公开(公告)日：2022-08-18

申请号：US17647725

申请日：2022-01-11

Applicant: FDK CORPORATION

Inventor： Takuro Ito

IPC: B65D5/50

Abstract: A battery packaging container includes: a plate-shaped bottom wall; a first lateral wall formed integrally with the bottom wall; a second lateral wall formed integrally with the bottom wall; a partition wall formed integrally with the first lateral wall and extending diagonally from an upper end of the first lateral wall toward the second edge of the bottom wall; and a lid formed integrally with the second lateral wall and extending from an upper end of the second lateral wall to cover the partition wall from above. The partition wall includes a storage hole to store a battery, the storage hole being defined by an end portion of the partition wall, a root portion located on an opposite side of the end portion, and a pair of lateral portions connecting the end portion and the root portion.

公开(公告)号：US11355753B2

公开(公告)日：2022-06-07

申请号：US16832811

申请日：2020-03-27

Applicant: FDK CORPORATION

Inventor： Jun Ishida ,  Akira Saguchi ,  Shota Ohata

IPC: H01M4/52 ,  C22C1/04 ,  C22C19/00 ,  H01M4/24 ,  H01M4/32 ,  H01M4/36 ,  H01M4/38 ,  H01M4/62 ,  H01M10/30 ,  H01M10/34 ,  H01M4/02

Abstract: A negative electrode used in a nickel metal hydride secondary battery includes a negative electrode core body and a negative electrode mixture carried on the negative electrode core body. The negative electrode mixture includes hydrogen storage alloy powder which is an aggregate of hydrogen storage alloy particles, a binder, and a thickener. The hydrogen storage alloy particles have a volume mean particle size of 40 μm or less and a concentration of chlorine of not less than 180 ppm to not more than 780 ppm.

公开(公告)号：US11258130B2

公开(公告)日：2022-02-22

申请号：US16327601

申请日：2017-06-18

Applicant: FDK CORPORATION

Inventor： Mika Takayanagi

IPC: H01M2/10 ,  H01M50/213 ,  H01M50/20 ,  H01M50/107

Abstract: A battery spacer comprises: a cylindrical case body into which a battery is inserted; a bottom wall portion with which an anode-side end of the battery is to come into contact, the bottom wall portion having an anode exposure hole from which a negative terminal of the battery is partially exposed; an annular top wall member that is located opposite to the bottom wall portion 8 and has a central opening into which the battery is inserted; a plurality of anode-side catching pieces that have anode-side engagement hooks extending from the circumference of the anode exposure hole toward the interior of the case body and engaging with an anode-side outer peripheral surface of the battery, and hold the anode side of the battery; and a plurality of cathode-side catching pieces that have cathode-side engagement hooks extending from the circumference of a central opening toward the interior of the case body and engaging with a cathode-side outer peripheral surface of the battery, and hold the cathode side of the battery.

公开(公告)号：US11038429B2

公开(公告)日：2021-06-15

申请号：US16498573

申请日：2018-01-18

Applicant: FDK CORPORATION

Inventor： Kenji Hamada ,  Tadashi Sato ,  Norio Fukui

IPC: H02M3/335 ,  H02M1/40

Abstract: An insulation-type switching power supply according to the present invention includes: a PWM control circuit that generates and outputs a PWM pulse and a PWM pulse respectively by alternately extracting pulses of a PWM control pulse signal at a field-effect transistor in a flyback converter circuit; a pulse transformer; a bidirectional excitation circuit that excites a primary winding of the pulse transformer in the forward direction using the PWM pulse and excites the primary winding of the pulse transformer in the reverse direction using the PWM pulse; and a switching circuit that generates a pulse signal by inverting a negative pulse of a pulse signal, induced in a secondary winding of the pulse transformer, to a positive pulse and switches the field-effect transistor by using the generated pulse signal.

公开(公告)号：US11038161B2

公开(公告)日：2021-06-15

申请号：US16357050

申请日：2019-03-18

Applicant: FDK CORPORATION

Inventor： Shota Ohata ,  Jun Ishida ,  Toshiki Sato ,  Akira Saguchi

IPC: H01M4/38 ,  H01M10/34 ,  H01M4/24 ,  H01M4/62 ,  H01M4/36 ,  H01M4/60 ,  H01M4/02

Abstract: A nickel-hydrogen secondary battery includes an electrode group which contains a positive electrode, a negative electrode, and a separator, wherein the negative electrode includes a negative electrode core, and a negative electrode mixture layer held by the negative electrode core, wherein the negative electrode mixture layer contains a fluororesin; a quantity of the fluororesin, expressed by a mass applied per unit area of the negative electrode, is within a range of 0.2 mg/cm2 or more and 2.0 mg/cm2 or less; and a fluororesin content which is a ratio of the fluororesin contained in a unit volume of the negative electrode mixture layer is higher in an inner layer portion than in an outer layer portion in the negative electrode mixture layer.

公开(公告)号：US20210111460A1

公开(公告)日：2021-04-15

申请号：US17256792

申请日：2019-07-22

Applicant: FDK CORPORATION

Inventor： Mitsuru Yumoto

IPC: H01M50/244 ,  H01M10/613 ,  H01M10/6554 ,  H01M10/6551 ,  H01M10/643 ,  H01M50/213

Abstract: A battery unit comprises a battery pack, and a storage case storing the battery pack, the storage case includes a bottom wall on which the battery pack is mounted, the battery pack includes a bottom plate located between a battery assembly and the bottom wall when the battery pack is stored in the storage case, the bottom plate abutting on the bottom wall, the bottom plate includes a fitting protrusion protruding in a direction away from the battery assembly, and the bottom wall includes a bottom wall side fixing groove in which the fitting protrusion is fitted, in a position corresponding to the fitting protrusion.

公开(公告)号：US20210104734A1

公开(公告)日：2021-04-08

申请号：US17124505

申请日：2020-12-17

Applicant: FDK CORPORATION

Inventor： Yuya Suzuki ,  Shigeyuki Kuniya ,  Takeo Nogami ,  Shingo Anzai ,  Shunji Matsui

IPC: H01M4/24 ,  H01M10/26 ,  H01M4/26

Abstract: An alkaline battery and a method of producing an alkaline battery that includes a negative electrode gel in which a negative electrode active material made of a zinc alloy and a binder are dispersed in an alkaline aqueous solution. Ultrafine microfibrils form the binder.

公开(公告)号：US20200303690A1

公开(公告)日：2020-09-24

申请号：US16946167

申请日：2020-06-08

Applicant: FDK CORPORATION

Inventor： Munekazu Nito

IPC: H01M2/02 ,  G09F3/02

Abstract: A label for a battery includes a base material sheet; and a phosphorescent print layer famed by applying a phosphorescent material onto a surface of the base material so as to display information concerning the battery. The phosphorescent material is provided in a region on the surface of the base material where the information for identifying the battery is displayed. The information for identifying the battery is information indicating a standard of the battery, for example. The information concerning identification of the battery is information indicating a polarity of the battery.

公开(公告)号：US20200266404A1

公开(公告)日：2020-08-20

申请号：US16347172

申请日：2017-09-26

Applicant: FDK CORPORATION

Inventor： Hiroyuki Shibaoka

IPC: H01M2/12 ,  H01M2/04 ,  H01M10/34 ,  H01M4/24

Abstract: A nickel-metal hydride secondary battery is provided with: an outer package can having an opening at an upper end; an electrode group accommodated in the outer package can together with an alkaline electrolyte; and a sealing body that seals the opening of the outer package can. The sealing body includes a cover plate having a central through hole, and a valve element made of an elastic material to close the central through hole. The valve element includes a cylindrical main body part having a base end surface that covers the central through hole, and an extended diameter part positioned on an opposite side of the main body part from the base end surface and having a diameter made larger than a diameter of the main body part. A ratio R of a thickness T of the extended diameter part to a total height H of the valve element is equal to or higher than 27%.