Wirelessly rechargeable power supply device

Patent metadata

Field	Value
Publication number	US-2024332999-A1
Application number	US-202418615501-A
Country	US
Kind code	A1
Filing date	Mar 25, 2024
Priority date	Apr 3, 2023
Publication date	Oct 3, 2024
Grant date	—

Abstract

A wirelessly rechargeable power supply device includes a circuit board, a power storage device, two or more antennas configured to receive power, a housing that accommodates the circuit board, the power storage device, and the two or more antennas, and a charging circuit that is mounted on the circuit board and is configured to charge the power storage device with the power received by the two or more antennas. The two or more antennas include a first antenna and a second antenna. A direction in which a sensitivity of the first antenna is lowest and a direction in which a sensitivity of the second antenna is lowest are different from each other.

First claim

What is claimed is:

1 . A wirelessly rechargeable power supply device, comprising:
a circuit board: a power storage device: two or more antennas configured to receive power; a housing that accommodates the circuit board, the power storage device, and the two or more antennas; and a charging circuit that is mounted on the circuit board and is configured to charge the power storage device with the power received by the two or more antennas, wherein the two or more antennas include a first antenna and a second antenna, and a direction in which a sensitivity of the first antenna is lowest and a direction in which a sensitivity of the second antenna is lowest are different from each other.

2 . The wirelessly rechargeable power supply device according to claim 1 , wherein
the first antenna and the second antenna are both dipole antennas, the first antenna and the second antenna are arranged side by side in one direction along the circuit board, and a direction in which an element of the first antenna extends and a direction in which an element of the second antenna extends are different from each other.

3 . The wirelessly rechargeable power supply device according to claim 2 , wherein the direction in which the element of the first antenna extends and the direction in which the element of the second antenna extends are orthogonal to each other.

4 . The wirelessly rechargeable power supply device according to claim 2 , wherein the direction in which the element of the first antenna extends and the direction in which the element of the second antenna extends are both orthogonal to the one direction along the circuit board.

5 . The wirelessly rechargeable power supply device according to claim 2 , wherein the first antenna and the second antenna are arranged side by side in a longitudinal direction of the circuit board.

6 . The wirelessly rechargeable power supply device according to claim 5 , wherein the direction in which the element of the first antenna extends and the direction in which the element of the second antenna extends are both orthogonal to the longitudinal direction of the circuit board.

7 . The wirelessly rechargeable power supply device according to claim 1 , further comprising a first coaxial cable and a second coaxial cable, wherein
the first antenna is connected to the charging circuit via the first coaxial cable, and the second antenna is connected to the charging circuit via the second coaxial cable.

8 . The wirelessly rechargeable power supply device according to claim 1 , wherein
the first antenna and the second antenna are both flexible printed circuit board antennas, and the first antenna and the second antenna are arranged along an inner circumference of the housing.

9 . The wirelessly rechargeable power supply device according to claim 1 , further comprising a communication antenna and a communication control unit, wherein
the communication antenna is configured to receive radio waves from an external device and transmit radio waves to the external device, and the communication control unit is configured to control communication with the external device.

10 . The wirelessly rechargeable power supply device according to claim 1 , wherein
the wirelessly rechargeable power supply device is a columnar member including a top surface and a bottom surface, and the wirelessly rechargeable power supply device comprises a positive electrode at the top surface and a negative electrode at the bottom surface.

Assignees

• Toyoda Gosei Kk

Inventors

• Suzuki Tsubasa
• Tokuyama Yuki
• Fuki Shinichiro
• Sakai Tomokazu
• Sugihara Atsushi
• Abe Teppei

Classifications

• H02J7/70 Primary

  characterised by the mechanical construction · CPC title

• H01Q1/248

  provided with an AC/DC converting device, e.g. rectennas · CPC title

• H02J50/40

  using two or more transmitting or receiving devices (H02J50/50 takes precedence) · CPC title

• H02J7/0042 Primary

  Electricity · mapped topic