公开(公告)号：US20240128886A1

公开(公告)日：2024-04-18

申请号：US18467507

申请日：2023-09-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiromu MATSUMOTO ,  Hiroyuki HOSOI

IPC: H02M7/04

CPC classification number: H02M7/04

Abstract: A power supply device is connectable to a single-phase AC power supply or a multi-phase AC power supply. The power supply device includes power conversion circuits, a relay circuit, and a processor. The relay circuit is capable of switching between a first state and a second state. In the first state, a power supply line of each phase of the multi-phase AC power supply is connected to a corresponding power conversion circuit. In the second state, a power supply line of the single-phase AC power supply is connected to two or more of the power conversion circuits. The processor controls output timing of a control signal for operating the relay circuit on the basis of a detected temperature. The output timing is controlled such that, the first state is switched to the second state at timing when an AC voltage of the single-phase AC power supply crosses zero.

公开(公告)号：US20230028214A1

公开(公告)日：2023-01-26

申请号：US17783561

申请日：2020-12-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takehiko YAMAKAWA ,  Hiromu MATSUMOTO ,  Susumu NAKAMURA ,  Yutaka MIYAMOTO

IPC: H01F27/28 ,  H01F27/24 ,  H02J7/00 ,  H01F41/02 ,  H01F41/04

Abstract: A transformer includes a primary winding, a secondary winding, a first core, and a second core. The primary winding and the secondary winding are inserted into the first core and the second core, and the first core and the second core are disposed to face each other. The first core includes one first core portion, and the second core includes a plurality of second core portions. The first core is a lower core, and the second core is an upper core. The first core and the second core are disposed to face each other with a gap interposed between the first core and the second core. The first core and the second core include a heat-resistant elastic body in the gap, and are disposed to face each other. Each of the second core portions is disposed with a heat-resistant elastic body interposed between the second core portions.

公开(公告)号：US20240088793A1

公开(公告)日：2024-03-14

申请号：US18271176

申请日：2021-12-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takehiko YAMAKAWA ,  Hiromu MATSUMOTO ,  Susumu NAKAMURA ,  Yutaka MIYAMOTO

IPC: H02M3/335 ,  H02J7/00 ,  H02M1/00 ,  H02M1/42 ,  H02M3/00 ,  H05K7/20

CPC classification number: H02M3/33573 ,  H02J7/00712 ,  H02M1/0067 ,  H02M1/4233 ,  H02M3/003 ,  H05K7/20927 ,  H02J2207/20

Abstract: A power conversion apparatus is provided with: a plurality of power conversion circuits each provided with a transformer and supplying DC power to a common rechargeable battery; a control circuit configured to control the power conversion circuits; and a cooling device configured to cool the power conversion circuits. The cooling device is provided with at least one flow path for a coolant, the flow path being in thermal contact with the transformers of the power conversion circuits. When a load voltage of the rechargeable battery is equal to or higher than a predetermined threshold, the control circuit operates one power conversion circuit of the plurality of power conversion circuits, the one power conversion circuit provided with the transformer having a largest thermal contact area with the flow path, and stops operations of other power conversion circuits of the plurality of power conversion circuits.

公开(公告)号：US20240055995A1

公开(公告)日：2024-02-15

申请号：US18271189

申请日：2021-12-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takehiko YAMAKAWA ,  Hiromu MATSUMOTO ,  Susumu NAKAMURA ,  Yutaka MIYAMOTO

IPC: H02M3/335 ,  H02M1/00 ,  H02J7/00

CPC classification number: H02M3/3353 ,  H02M1/0009 ,  H02J7/007182 ,  H02J2207/20

Abstract: A power conversion apparatus is provided with: a plurality of power conversion circuits each provided with a transformer and supplying DC power to a common rechargeable battery; and a control circuit configured to control the plurality of power conversion circuits. When a load voltage of the rechargeable battery is equal to or higher than a first threshold, the control circuit selectively and sequentially operates the plurality of power conversion circuits such that one of the plurality of power conversion circuits is operated, and others of the plurality of power conversion circuits are stopped.

公开(公告)号：US20170366047A1

公开(公告)日：2017-12-21

申请号：US15695126

申请日：2017-09-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hiromu MATSUMOTO ,  Hiroshi KANNO

IPC: H02J50/12 ,  H02J7/02 ,  H02J5/00

CPC classification number: H02J50/12 ,  H02J7/025 ,  H02J17/00

Abstract: A wireless power transmission apparatus is provided for performing non-contact transmission of power by electromagnetic induction, and includes a power transmitter performing frequency conversion; a power transmitting antenna connected to the power transmitter; and a first resonance capacitor connected between the power transmitter and the power transmitting antenna, and resonating with the power transmitting antenna to pass the power transmission frequency of the power transmitter. The wireless power transmission apparatus includes a power receiving antenna arranged to oppose the power transmitting antenna; a power receiver connected to the power receiving antenna, and performing rectification and smoothing; and a second resonance capacitor connected between the power receiving antenna and the power receiver, and resonating with the power receiving antenna to pass the power transmission frequency of the power transmitter. The wireless power transmission apparatus includes a filter connected between the second resonance capacitor and the power receiver, and reflecting higher harmonics generated by the power receiver.

公开(公告)号：US20150303742A1

公开(公告)日：2015-10-22

申请号：US14443192

申请日：2014-04-11

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Hiromu MATSUMOTO ,  Hiroshi KANNO

IPC: H02J17/00 ,  H02J5/00

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  H02J17/00

Abstract: A wireless power transmission apparatus is provided for performing non-contact transmission of power by electromagnetic induction, and includes a power transmitter performing frequency conversion; a power transmitting antenna; and a first resonance capacitor connected between the power transmitter and the power transmitting antenna, and resonating with the power transmitting antenna to pass the power transmission frequency of the power transmitter. The apparatus includes a power receiving antenna arranged to oppose the power transmitting antenna; a power receiver, and performing rectification and smoothing; and a second resonance capacitor connected between the power receiving antenna and the power receiver, and resonating with the power receiving antenna to pass the power transmission frequency of the power transmitter. The apparatus includes a filter connected between the second resonance capacitor and the power receiver, and reflecting higher harmonics generated by the power receiver.

Abstract translation: 提供一种无线电力传输装置，用于通过电磁感应执行电力的非接触传输，并且包括执行频率转换的电力发射机; 发射天线; 以及连接在电力发送器和电力发送天线之间的第一谐振电容器，并且与电力发送天线谐振以通过电力发送器的电力传输频率。 该装置包括：电力接收天线，布置成与发射天线相对; 电源接收器，并执行整流和平滑; 以及连接在所述受电天线和所述电力接收器之间的第二谐振电容器，并且与所述受电天线谐振以通过所述电力发送器的电力传输频率。 该装置包括连接在第二谐振电容器和电力接收器之间的滤波器，并且反映由电力接收器产生的高次谐波。