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公开(公告)号：US20220231539A1
公开(公告)日：2022-07-21
申请号：US17716294
申请日：2022-04-08
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiyokazu YAMADA , Tatsuya HOSOTANI , Tomohiro KATO , Mitsuyoshi NISHIDE
Abstract: A wireless rechargeable solid-state battery module includes a solid-state battery; internal structures that are provided with an internal circuit electrically connected with the solid-state battery; a barrier layer that isolates the solid-state battery from an outside air environment; and a positive electrode terminal and a negative electrode terminal each of which is electrically connected with the solid-state battery, is exposed on an outer surface, and is arranged so that the positive electrode terminal or the negative electrode terminal can be mounted on a mounting board. The internal circuit includes a wireless charging circuit that receives power from an outside via an electromagnetic field or a magnetic field produced by power transmission from the outside and controls charging to the solid-state battery.
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公开(公告)号：US20220094203A1
公开(公告)日：2022-03-24
申请号：US17539958
申请日：2021-12-01
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Kiyokazu YAMADA , Osamu MIKI , Tatsuya HOSOTANI
Abstract: A power receiver includes an outer case shaped to house a secondary battery, a power reception coil member disposed in the outer case, and a circuit board disposed in the outer case. On the circuit board, a power reception circuit electrically connected to a coil conductor of the power reception coil member and a charging circuit configured to charge and discharge the secondary battery are provided. The outer case includes a first outer case member near the power reception coil member and a second outer case member forming the outer case in combination with the first outer case member. The first outer case member has, for example, a flat surface, is disposed nearer to an external power transmission coil than the second outer case member, and has a structure with which the coil conductor of the power reception coil member and the power transmission coil can face each other.
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公开(公告)号：US20210408835A1
公开(公告)日：2021-12-30
申请号：US17472356
申请日：2021-09-10
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Osamu MIKI , Tatsuya HOSOTANI
Abstract: A power reception device includes a plurality of power-receiving coils, a plurality of rectifier elements, and a convergent output smoothing capacitor. The plurality of power-receiving coils are positioned in place relative to the housing in such a manner that the plurality of power-receiving coils each include first conductor portions extending along a side surface of the housing. The plurality of rectifier elements are connected respectively to the plurality of power-receiving coils. The convergent output smoothing capacitor stores electric energy output from the plurality of rectifier elements.
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公开(公告)号：US20210152021A1
公开(公告)日：2021-05-20
申请号：US17162610
申请日：2021-01-29
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Norikazu SAKAMOTO , Tatsuya HOSOTANI , Kiyokazu YAMADA
Abstract: An in-vivo implantable medical device includes a housing, an electronic circuit component, a power reception coil, and a magnetic material. The housing is formed of a biocompatible material and forms an internal space. The electronic circuit component is disposed in the internal space. The power reception coil is disposed in the internal space, interacts with an external electromagnetic field to form an electromagnetic resonance field to receive power. At least part of a region of the housing in which the electromagnetic resonance field is formed is formed of a biocompatible nonmetal material.
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公开(公告)号：US20210145362A1
公开(公告)日：2021-05-20
申请号：US17160064
申请日：2021-01-27
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tatsuya HOSOTANI , Kiyokazu YAMADA
Abstract: An in-vivo implantable electronic device includes a housing, a power reception coil, and an electronic circuit. The housing is formed of a biocompatible material and forms an internal space sealed. The power reception coil is disposed in the internal space of the housing and receives power by interacting with an electromagnetic field formed by an external electric field or magnetic field, or transmits an electromagnetic wave to the outside. The electronic circuit is disposed in the internal space, is connected to the power reception coil, and performs at least processing of an electric signal. The housing includes a first member in a box shape formed of a biocompatible metal material and having an opening, a second member formed of a biocompatible nonmetal material and having a shape that closes the opening, a packing in an annular shape disposed between the first member and the second member.
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Patent Agency Ranking
公开(公告)号：US20210143686A1
公开(公告)日：2021-05-13
申请号：US17157311
申请日：2021-01-25
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tatsuya HOSOTANI , Koyo KAIWA
Abstract: A wireless power receiving circuit module includes a first base, a second base, electronic components, a power receiving coil, and a ground conductor pattern. The number of layers of the second base is different from that of the first base, and the second base does not overlap with the first base in a plan view and shares a predetermined dielectric layer with the first base. The electronic components are mounted on a first main surface of the first base. The power receiving coil is formed in the second base. The ground conductor pattern is disposed on a second main surface side in the first base and overlaps with the electronic components.
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公开(公告)号：US20210143685A1
公开(公告)日：2021-05-13
申请号：US17151127
申请日：2021-01-16
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Koyo KAIWA , Tatsuya HOSOTANI
Abstract: A planar-type wireless power-receiving circuit module includes a planar ground conductor, a substrate, a power-receiving coil, and a magnetic sheet. The planar ground conductor has a cavity in the middle section thereof. The substrate is disposed on a first main surface of the planar ground conductor. The substrate includes dielectric layers stacked on top of each other in a manner so as to form electronic circuitry. The power-receiving coil is electrically connected to the electronic circuitry and is disposed in the cavity. The magnetic sheet overlaps the power-receiving coil when the planar ground conductor is viewed in plan. The magnetic sheet is part of a path of magnetic flux passing through the power-receiving coil and is disposed on a first main surface of the power-receiving coil.
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公开(公告)号：US20210104351A1
公开(公告)日：2021-04-08
申请号：US17125729
申请日：2020-12-17
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tatsuya HOSOTANI
IPC: H01F27/28 , H02M3/155 , H01F27/245 , H01F41/04
Abstract: A switching power supply device includes a power conversion circuit that is provided at a multilayer printed board and includes a plurality of switching circuits and a controller controlling the switching circuits, windings configuring an inductor at the multilayer printed board, and a magnetic sheet on one or both of upper and lower faces of the multilayer printed board. First ends of the windings are connected to the switching circuits, and second ends of the windings are connected to a common output. The controller controls the plurality of switching circuits to periodically vary a position and a time at which magnetic flux generated by current flowing to the windings reaches the maximum magnetic flux density. Thus, the switching power supply device is thin, achieves dispersion of heat generation, handles variations in the magnitude of electric power by varying the area of the board, and effectively reduces unwanted radiation.
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49.发明申请公开(公告)号：US20190089200A1
公开(公告)日：2019-03-21
申请号：US16195497
申请日：2018-11-19
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tatsuya HOSOTANI
Abstract: A wireless power supply system includes a power transmission device and a power reception device. A control circuit in the power transmission device causes a power transmission circuit to operate, by a pulse-density modulation control method of controlling density of oscillation pulses for a predetermined period of time, in relationship De1>De2>De3, where De1 indicates the pulse density determined on the basis of a result of demodulation of a transmission signal from the power reception device, De2 indicates the pulse density in a state where a detected output value from the power transmission circuit reaches a predetermined value, and De3 indicates the pulse density in a state where a detected temperature values of a switch element reaches a predetermined value.
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公开(公告)号：US20180131236A1
公开(公告)日：2018-05-10
申请号：US15861045
申请日：2018-01-03
Applicant: Murata Manufacturing Co., Ltd.
Inventor： Tatsuya HOSOTANI
CPC classification number: H02J50/12 , H01L29/742 , H02J5/005
Abstract: A power transmission device includes a power transmission coil, a power-transmission resonance capacitor that forms, together with the power transmission coil, a power-transmission resonance mechanism, and a power transmission circuit electrically connected to the power-transmission resonance mechanism that intermittently applies a direct-current input voltage to the power-transmission resonance mechanism and causes the power transmission coil to generate an alternating-current voltage. The power transmission circuit includes a control circuit section including an oscillator, and a power circuit section formed of an integrated circuit sealed in a small-sized package with a plurality of terminals. The integrated circuit is electrically and directly connected to the power-transmission resonance mechanism. The control circuit section oscillates at a predetermined frequency and outputs a driving signal which is input to the power circuit section. The power circuit section intermittently applies a direct-current voltage to the power-transmission resonance mechanism using a transistor in the integrated circuit.
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