公开(公告)号：USD1012017S1

公开(公告)日：2024-01-23

申请号：US29761824

申请日：2020-12-11

Applicant: FDK CORPORATION

Designer： Takashi Kanou ,  Mika Takayanagi ,  Asuka Takahashi ,  Yasunari Mizoguchi ,  Katsuki Tsuchiya ,  Kenji Kitamura ,  Kunihisa Sekiguchi ,  Kazuta Takeno

Abstract: FIG. 1 is a perspective view of a battery charger.
FIG. 2 is a front view of the battery charger.
FIG. 3 is a back view of the battery charger.
FIG. 4 is a left view of the battery charger.
FIG. 5 is a right view of the battery charger.
FIG. 6 is a top view of the battery charger; and,
FIG. 7 is a bottom view of the battery charger.
In the drawings, the broken lines are for the purpose of illustrating portions of the battery charger that form no part of the claimed design.

公开(公告)号：US20190006856A1

公开(公告)日：2019-01-03

申请号：US16073316

申请日：2017-01-27

Applicant: FDK CORPORATION

Inventor： Yasunari Mizoguchi ,  Kazuta Takeno ,  Kunihisa Sekiguchi ,  Kenji Kitamura ,  Takashi Kano

IPC: H02J7/00 ,  H01M10/44

Abstract: A charging circuit includes a first power source circuit that supplies charging power to secondary batteries; a switch that controls the supply of the power; and a control device that performs switching control of the switch. The control device detects a voltage difference between the secondary batteries before starting charging; starts a timer and starts serial charging of the secondary batteries; on the condition that the voltage difference before the charging has been equal to or larger than a first threshold, if respective voltage values of the secondary batteries have both become equal to or larger than a second threshold before the timer expires, shortens a remaining time on the timer at that time point; and finishes the serial charging of the secondary batteries at the earlier of a time point when the secondary batteries have both become fully charged, or a time point when the timer has expired.

公开(公告)号：US10951048B2

公开(公告)日：2021-03-16

申请号：US16073316

申请日：2017-01-27

Applicant: FDK CORPORATION

Inventor： Yasunari Mizoguchi ,  Kazuta Takeno ,  Kunihisa Sekiguchi ,  Kenji Kitamura ,  Takashi Kano

IPC: H02J7/00 ,  H01M10/44 ,  H02J7/02 ,  H01M10/48 ,  H02J7/04

Abstract: A charging circuit includes a first power source circuit that supplies charging power to secondary batteries; a switch that controls the supply of the power; and a control device that performs switching control of the switch. The control device detects a voltage difference between the secondary batteries before starting charging; starts a timer and starts serial charging of the secondary batteries; on the condition that the voltage difference before the charging has been equal to or larger than a first threshold, if respective voltage values of the secondary batteries have both become equal to or larger than a second threshold before the timer expires, shortens a remaining time on the timer at that time point; and finishes the serial charging of the secondary batteries at the earlier of a time point when the secondary batteries have both become fully charged, or a time point when the timer has expired.