公开(公告)号：US20250004059A1

公开(公告)日：2025-01-02

申请号：US18687022

申请日：2022-03-23

Applicant: OMRON Corporation

Inventor： Chen CHEN ,  Shingo NAGAOKA ,  Takeo NISHIKAWA ,  Wataru OKADA ,  Satoru IKEMOTO ,  Takuya NAKAI

IPC: G01R31/387 ,  H02J7/00

Abstract: The battery capacity of a storage battery is estimated without acquiring information on the battery capacity from the storage battery side. A battery capacity estimation device that estimates the battery capacity of a storage battery, the battery capacity estimation device including: a characteristic information acquisition unit configured to acquire the charge characteristic information of the storage battery in which at least one of a charge current, a charge voltage, or a charge power for charging the storage battery is associated with the battery capacity; and a capacity estimation unit configured to perform an estimation process of outputting power of a first output power value to the storage battery over a predetermined time necessary for estimating the battery capacity to perform first charging and estimating the battery capacity on the basis of at least the first output power value.

公开(公告)号：US20180240588A1

公开(公告)日：2018-08-23

申请号：US15751881

申请日：2016-09-30

Applicant: OMRON Corporation

Inventor： Shingo NAGAOKA ,  Toshiyuki ZAITSU ,  Yutaro OKUNO ,  Sadaharu MORISHITA

IPC: H01F38/08 ,  H01F27/24 ,  H01F27/28 ,  H01F27/34 ,  H01F3/14

CPC classification number: H01F38/08 ,  H01F3/12 ,  H01F3/14 ,  H01F27/24 ,  H01F27/28 ,  H01F27/346 ,  H01F27/38 ,  H02M3/337 ,  H02M2001/0058 ,  H02M2001/0064

Abstract: Provided is a transformer (1), which includes: a core (10) which forms a magnetic circuit and has a middle leg (10a) and a plurality of side legs (10b, 10c) branched from the middle leg (10a); primary windings (11) respectively wound around a first winding leg (10a) and a second winding leg (10b), which are selected from the middle leg (10a) and the side legs (10b, 10c); and a secondary winding (12) wound around either of the first winding leg (10a) or the second winding leg (10b), wherein a first magnetic flux generated by the primary windings (11) from the first winding leg (10a) and a second magnetic flux generated by the primary windings (11) from the second winding leg (10b) differ from each other by a predetermined value or more at a position at which the fluxes do not intersect with the secondary winding (12).

公开(公告)号：US20230223856A1

公开(公告)日：2023-07-13

申请号：US18004334

申请日：2021-07-05

Applicant: OMRON Corporation

Inventor： Mitsuru SATO ,  Shingo NAGAOKA ,  Takeshi UEMATSU

IPC: H02M3/335 ,  H02M3/00 ,  H02M1/42 ,  H02M1/08

CPC classification number: H02M3/33573 ,  H02M3/01 ,  H02M1/4216 ,  H02M1/081

Abstract: At a first node (N1), an intermediate voltage potential occurs between a voltage potential of the first input terminal (P1) and a voltage potential of the second input terminal (P2). A second node (N2) is connected to ends (b1 to b3) of primary windings (w1, w4, w7) of transformers (T1 to T3) of LLC resonant converters (11 to 13). A switch circuit is connected between the first node (N1) and the second node (N2). A control circuit (15) is configured to turn on a switch circuit (SW) when a load current of a load apparatus (6) connected to a first output terminal (P3) and a second output terminal (P4) is equal to or smaller than a predetermined criterion and turn off the switch circuit (SW) when the load current of the load apparatus (6) is larger than the predetermined criterion.

公开(公告)号：US20220278554A1

公开(公告)日：2022-09-01

申请号：US17632093

申请日：2019-08-05

Applicant: OMRON Corporation

Inventor： Taichi MISHIMA ,  Yuki ITO ,  Shingo NAGAOKA ,  Takeshi UEMATSU

IPC: H02J50/12 ,  H02J50/80 ,  H02J50/60 ,  B60L53/124

Abstract: A control circuit controls a power supply circuit to generate transmitting power having a frequency varying within a frequency range. The control circuit determines a stably transmitting frequency based on a detected output voltage of a power receiver apparatus, the stably transmitting frequency indicating a frequency of the transmitting power at which dependency of the output voltage on a load value of the power receiver apparatus is at least locally minimized within the frequency range. The control circuit determines a transmitting voltage based on the detected output voltage, the transmitting voltage indicating a voltage of the transmitting power at which the output voltage reaches a target voltage when generating transmitting power having the stably transmitting frequency. The control circuit controls the power supply circuit to generate transmitting power having the stably transmitting frequency and the transmitting voltage.

公开(公告)号：US20240380302A1

公开(公告)日：2024-11-14

申请号：US18289417

申请日：2022-03-29

Applicant: OMRON Corporation

Inventor： Taichi MISHIMA ,  Yuki ITO ,  Shingo NAGAOKA ,  Takeshi UEMATSU

IPC: H02M1/00 ,  H02J50/12 ,  H02J50/80 ,  H02M1/42

Abstract: A drive control apparatus is configured to drive and control a composite resonance circuit including LC resonant circuits including inductances L of power transmitting and receiving coils electromagnetically coupled to each other. The drive control apparatus includes: an inverter circuit configured to drive the composite resonance circuit by converting input DC power into AC power by switching the DC power at a predetermined operating frequency; an input current detector configured to detect an input current of the inverter circuit; and a frequency controller and driver configured to generate a drive signal of the inverter circuit while changing the operating frequency by using a predetermined extreme value search method to drive the inverter circuit, search for a resonance frequency of the composite resonance circuit based on the detected input current, and set the operating frequency based on the searched resonance frequency.

公开(公告)号：US20190068065A1

公开(公告)日：2019-02-28

申请号：US15892369

申请日：2018-02-08

Applicant: OMRON Corporation

Inventor： Kohei TANINO ,  Shingo NAGAOKA ,  Mitsuru SATO ,  Masaaki NAGANO ,  Hiroyuki ONISHI

IPC: H02M3/335 ,  H02M1/40

Abstract: Provided is an LLC resonant converter capable of achieving high efficiency while preventing saturation of a transformer. The LLC resonant converter includes semiconductor switches connected in series between a positive electrode and a negative electrode of a power source, a transformer including a primary winding, a core, and a secondary winding, a capacitor connected between the negative electrode of the power source and a second end of the primary winding of the transformer, a capacitor, and semiconductor switches connected to each other in series and in parallel with the capacitor, and a secondary side circuit connected to the secondary winding of the transformer, wherein the transformer is a swing choke coil.

公开(公告)号：US20180042104A1

公开(公告)日：2018-02-08

申请号：US15785563

申请日：2017-10-17

Applicant: OMRON Corporation

Inventor： Shingo NAGAOKA ,  Hiroyuki ONISHI ,  Takeo NISHIKAWA ,  Kentaro HAMANA

IPC: H05K1/02 ,  H01L23/433 ,  H05K1/18

CPC classification number: H05K1/0216 ,  H01L23/36 ,  H01L23/4332 ,  H01L23/5222 ,  H02M1/44 ,  H02M3/155 ,  H02M7/48 ,  H05K1/0209 ,  H05K1/181 ,  H05K2201/0311 ,  H05K2201/066 ,  H05K2201/0792 ,  H05K2201/10166 ,  H05K2201/10265 ,  H05K2201/10356 ,  H05K2201/10628 ,  H05K2201/10757

Abstract: Provided is a power converter which is applied to a power converter equipped with a switching element provided on a line, and a radiator connected to a predetermined potential such as a ground potential. A noise eliminator in which a conductive member is covered with insulator is provided between the switching element (semiconductor switch) and the radiator (heatsink). A flexible connecting line connected to a conductive member of the noise eliminator is connected to an on-board line disposed on a circuit board.

公开(公告)号：US20230275503A1

公开(公告)日：2023-08-31

申请号：US18009031

申请日：2021-05-21

Applicant: OMRON Corporation

Inventor： Taichi MISHIMA ,  Yuki ITO ,  Shingo NAGAOKA ,  Takeshi UEMATSU

IPC: H02M1/00 ,  H02M1/42 ,  H02J50/12 ,  H02M7/217 ,  H02M7/523 ,  H02M3/335

CPC classification number: H02M1/007 ,  H02M1/4208 ,  H02J50/12 ,  H02M7/217 ,  H02M7/523 ,  H02M3/33569

Abstract: In an insulated resonance circuit device, a first resonance circuit includes first and second LC resonance circuits electromagnetically coupled to each other and electrically insulated from each other, oscillates at a predetermined first resonance frequency based on an input AC voltage, and outputs an oscillation signal voltage. The second resonance circuit having a second resonance frequency substantially identical to the first resonance frequency resonates with the oscillation signal voltage to detect the oscillation signal voltage, and outputs the detected oscillation signal voltage. A control circuit compare the oscillation signal voltage from the second resonance circuit with a comparison signal voltage for obtaining a predetermined target output voltage and/or a predetermined target output current to generate and output gate signals for controlling a rectifier circuit.

公开(公告)号：US20210203187A1

公开(公告)日：2021-07-01

申请号：US17106865

申请日：2020-11-30

Applicant: OMRON Corporation ,  NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY

Inventor： Taichi MISHIMA ,  Shingo NAGAOKA ,  Takeshi UEMATSU ,  Hiroo SEKIYA

IPC: H02J50/12 ,  H02J7/02 ,  H02M3/28 ,  H03B5/12

Abstract: A resonance oscillator circuit is provided to include first and second oscillators. The first oscillator includes a first LC resonator circuit and an amplifier element, and oscillates by shifting a phase of an output voltage with a predetermined phase difference and feeding the output voltage back to the amplifier element. The second oscillator oscillates by generating a gate signal, which has a frequency identical to that of the output voltage, and drives the amplifier element, by shifting the phase of the output voltage with the phase difference and feeding the gate signal back to an input terminal of the amplifier element, by using the amplifier element as a switching element and using the first oscillator as a feedback circuit. The phase difference is a value substantially independent of an inductance of the first LC resonator circuit and a load, to which the output voltage is applied.

公开(公告)号：US20180048229A1

公开(公告)日：2018-02-15

申请号：US15784326

申请日：2017-10-16

Applicant: OMRON Corporation

Inventor： Shingo NAGAOKA ,  Hiroyuki ONISHI ,  Takeo NISHIKAWA

IPC: H02M3/155 ,  H02M7/217 ,  H02M5/293 ,  H02M1/32 ,  H02M7/00 ,  H02M3/335 ,  H05K7/20

CPC classification number: H02M3/155 ,  H01L23/34 ,  H02M1/12 ,  H02M1/32 ,  H02M1/4258 ,  H02M3/33592 ,  H02M5/293 ,  H02M7/003 ,  H02M7/217 ,  H02M2001/0006 ,  H02M2001/123 ,  H02M2007/4835 ,  H05K7/20

Abstract: Provided is a power converter which is applied to a power converter equipped with a switching element provided on a line, and a radiator connected to a predetermined potential such as a ground potential. A noise eliminator in which a conductive member is covered with insulator is provided between the switching element (semiconductor switch) and the radiator (heatsink). A conductive member of the noise eliminator is connected to a stable potential.