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51. 发明授权

US11387496B2 Method of making alkaline battery with gap between pellets 有权
公开(公告)号：US11387496B2
公开(公告)日：2022-07-12
申请号：US17111750
申请日：2020-12-04
申请人： FDK CORPORATION
发明人： Takahiro Endo , Yuki Natsume , Takeo Nogami , Hidenori Tsuzuki
IPC分类号： H01M4/06 , H01M4/24 , H01M4/42 , H01M4/50 , H01M6/02 , H01M6/08 , H01M10/28 , H01M6/18
摘要： An alkaline battery is made by press-fitting a plurality of tubular positive electrode pellets inside of an open end of a cylindrical positive electrode can. The press-fitting is performed in such a manner as to stack the positive electrode pellets coaxially inside of and in contact with the positive electrode can, with gaps between adjacent positive electrode pellets. A separator is disposed inside of the tubular pellets, and a negative electrode mixture is placed inside of the separator. A negative electrode current collector is inserted into the negative electrode mixture, and the opening at the open end of the positive electrode can is sealed with a negative electrode terminal plate.

52. 发明申请

US20220021231A1 CONTROL UNIT, BATTERY PACK, AND POWER SUPPLY DEVICE 有权
公开(公告)号：US20220021231A1
公开(公告)日：2022-01-20
申请号：US17305401
申请日：2021-07-07
申请人： FDK CORPORATION
发明人： Shunichiro Sugimori , Yusuke Kusagaya , Takashi Kabasawa
IPC分类号： H02J7/00
摘要： A battery indicator estimates a remaining battery capacity when a controller instructs a driving power source to start the power supply based on a battery voltage detected at a timing when the controller instructs the driving power source to start the power supply. The controller instructs the driving power source to stop the power supply after the discharge of a secondary battery by a charge-discharge circuit is ended and at a timing when a battery voltage being measured by a voltage measurer is stabilized.

53. 发明申请

US20210384755A1 CHARGING DEVICE 有权
公开(公告)号：US20210384755A1
公开(公告)日：2021-12-09
申请号：US17445482
申请日：2021-08-19
申请人： FDK CORPORATION
发明人： Masatsuru Miyazaki , Norio Fukui
IPC分类号： H02J7/02 , H02J7/06 , H01M10/44 , H02M7/06
摘要： A charging device includes a rectifier circuit which rectifies AC power output by an AC power supply, a DC-DC converter which converts a voltage of DC power output by the rectifier circuit, a charging circuit which includes a positive electrode contact point in contact with a positive electrode terminal of a mounted secondary battery and a first negative electrode contact point and a second negative electrode contact point in contact with a negative electrode terminal of the secondary battery, an output voltage from the DC-DC converter being applied between the positive electrode contact point and the first negative electrode contact point, and a control circuit which includes a photocoupler that is turned on by a difference in potential between the positive electrode contact point and the second negative electrode contact point and outputs an enable signal for the DC-DC converter when the photocoupler is on.

54. 发明申请

US20210344204A1 POWER STORAGE DEVICE AND CHARGING METHOD 有权
公开(公告)号：US20210344204A1
公开(公告)日：2021-11-04
申请号：US17268912
申请日：2019-06-14
申请人： FDK CORPORATION
发明人： Shun Mochizuki
IPC分类号： H02J7/00
摘要： A power storage device 1 includes first power storage unit BBU1 to seventh power storage unit BBU7 connected in series and a control unit 10 for monitoring each unit voltage and controlling each of the power storage units, each power storage unit BBU 1-7 includes a power storage portion BAT and a charge switch SWC connected in series between charge/discharge terminals T and a bypass switch SWB providing a bypass between the charge/discharge terminals T, and for the respective power storage units connected in series, the control unit 10 equalizes the unit voltages by individually setting a charging mode in which the bypass switch SWB is controlled to be set to OFF while the charge switch SWC is controlled to be set to ON to charge the power storage portion BAT with a constant current, and a bypass mode in which the bypass switch SWB is controlled to be set to ON while the charge switch SWC is controlled to be set to OFF to stop charging of the power storage portion BAT.

55. 发明申请

US20210091415A1 ALKALINE BATTERY WITH GAP BETWEEN PELLETS 有权
公开(公告)号：US20210091415A1
公开(公告)日：2021-03-25
申请号：US17111750
申请日：2020-12-04
申请人： FDK CORPORATION
发明人： Takahiro ENDO , Yuki NATSUME , Takeo NOGAMI , Hidenori TSUZUKI
IPC分类号： H01M10/28 , H01M4/06 , H01M6/08 , H01M4/50 , H01M4/24 , H01M4/42 , H01M6/02 , H01M6/18
摘要： An alkaline battery is made by press-fitting a plurality of tubular positive electrode pellets inside of an open end of a cylindrical positive electrode can. The press-fitting is performed in such a manner as to stack the positive electrode pellets coaxially inside of and in contact with the positive electrode can, with gaps between adjacent positive electrode pellets. A separator is disposed inside of the tubular pellets, and a negative electrode mixture is placed inside of the separator. A negative electrode current collector is inserted into the negative electrode mixture, and the opening at the open end of the positive electrode can is sealed with a negative electrode terminal plate.

56. 发明授权

US10923698B2 Laminate-type power storage element 有权
公开(公告)号：US10923698B2
公开(公告)日：2021-02-16
申请号：US15983070
申请日：2018-05-17
申请人： FDK CORPORATION
发明人： Yuya Iida , Yasuaki Egawa , Daisuke Hirata , Ryuji Ito , Akihiro Yamamoto
IPC分类号： H01M2/08 , H01M6/16 , H01M2/16 , H01M10/0525 , H01M10/0585 , H01M2/02 , H01M10/42
摘要： A laminate-type power storage element includes a flat plate-shaped electrode body and an exterior body. The electrode body is configured by stacking a sheet-shaped positive electrode and a sheet-shaped negative electrode on either side of a separator. The exterior body is formed in a flattened bag-shape by thermocompression bonding peripheral edge regions of two opposing laminated films, to seal the electrode body inside the flattened bag-shape of the exterior body together with an electrolyte. The separator has a sheet-shaped substrate and at least one bonding layer formed on at least one surface of the substrate. A peripheral edge portion of the separator is sandwiched between and bonded by the two laminated films at a peripheral inside of the peripheral edge regions of the two laminated films.

57. 发明授权

US10797595B2 Power supply and control method for power supply 有权
公开(公告)号：US10797595B2
公开(公告)日：2020-10-06
申请号：US16518207
申请日：2019-07-22
申请人： FDK CORPORATION
发明人： Yu Yonezawa , Jun Oikawa , Eiji Nagashima , Yoshiyasu Nakashima
IPC分类号： H02M3/156 , G01R1/20 , G01R19/00 , G05F1/10 , H02M1/14 , H02M1/00
摘要： A current detection circuit included in a power supply detects a current flowing to an inductance element from a detection tap of an inductance element connected between an output terminal and an output of a first switching element. A control circuit included in the power supply controls a first control terminal of the first switching element and a second control terminal of a second switching element and calculates an output current flowing to a load based on the current detected by the current detection circuit.

58. 发明授权

US10797419B2 Externally-attached PTC element and tubular battery 有权
公开(公告)号：US10797419B2
公开(公告)日：2020-10-06
申请号：US15537978
申请日：2015-11-20
申请人： FDK CORPORATION
发明人： Makoto Sakaguchi , Nozomi Asano
IPC分类号： H01R13/03 , H01C7/02 , H01M2/30 , H01M2/34 , H01M10/42 , H01M8/00
摘要： An externally-attached PTC element attachable to one electrode terminal of a tubular battery with electrode terminals on both end surfaces, the externally-attached PTC element including: a bottom plate made of a metal plate; a plate-shaped PTC element; and a top panel made of a metal plate, the plate-shaped PTC element and the top panel being stacked in that order above the bottom plate disposed below, the PTC element being disposed in an opposed area between the top panel and the bottom plate, the top panel projecting and extending in one direction with respect to a planar area of the bottom plate, the top panel having a distal end formed into a lead terminal shape mountable to a circuit board.

59. 发明授权

US10693362B2 Switching power supply 有权
公开(公告)号：US10693362B2
公开(公告)日：2020-06-23
申请号：US16226260
申请日：2018-12-19
申请人： FDK CORPORATION
发明人： Kenji Hamada , Tadashi Sato , Norio Fukui
IPC分类号： H02M3/337 , H02M1/08 , H02M3/335 , H02M1/00 , H02M1/38
摘要： 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.

60. 发明申请

US20200161646A1 POSITIVE ELECTRODE ACTIVE MATERIAL FOR ALKALINE SECONDARY BATTERY AND ALKALINE SECONDARY BATTERY INCLUDING THE POSITIVE ELECTRODE ACTIVE MATERIAL 审中-公开
公开(公告)号：US20200161646A1
公开(公告)日：2020-05-21
申请号：US16773367
申请日：2020-01-27
申请人： FDK CORPORATION , FUJITSU LIMITED
发明人： Takeshi Ito , Yuzo Imoto , Masaru Kihara , Takayuki Yano , Shigekazu Yasuoka , Shuuichi Doi , Takashi Yamazaki , Yuji Kataoka
IPC分类号： H01M4/36 , H01M4/52 , H01M4/32 , C01G53/04 , C01G51/04 , H01M4/50 , H01M10/34
摘要： A nickel-hydrogen secondary battery includes an electrode group comprising a separator, a positive electrode, and a negative electrode, and the positive electrode contains a positive electrode active material including a base particle comprising a nickel hydroxide particle containing Mn in solid solution and a conductive layer comprising a Co compound and covering the surface of the base particle, wherein the X-ray absorption edge energy of Mn detected within 6500 to 6600 eV by measurement with an XAFS method is 6548 eV or higher.

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