Flying body

Patent metadata

Field	Value
Publication number	US-12006049-B2
Application number	US-202017757439-A
Country	US
Kind code	B2
Filing date	Nov 19, 2020
Priority date	Dec 25, 2019
Publication date	Jun 11, 2024
Grant date	Jun 11, 2024

Abstract

Flying body including body portion and a plurality of propellers radially disposed to be laterally symmetrical from body portion is provided with: a plurality of motors respectively rotating the plurality of propellers; a plurality of power storage packs respectively supplying currents to the plurality of motors; and sub power storage pack connected to the plurality of power storage packs by power wirings, respectively. The same number of motors of the plurality of motors are installed on each of the left and right sides, and the same number of power storage packs of the plurality of power storage packs are installed on each of the left and right sides. Sub power storage pack is installed on a lateral center line of body portion.

First claim

The invention claimed is:

1. A flying body comprising: a body portion; a plurality of propellers which are radially disposed and are laterally symmetrical from the body portion; a plurality of motors, each of which rotates a respective one of the plurality of propellers; a plurality of power storage packs, each of which supplies currents to a respective one of the plurality of motors, respectively; a sub power storage pack connected to each of the plurality of power storage packs by a respective one of power wirings, a plurality of switches disposed between the plurality of power storage packs and the sub power storage pack, respectively; and a power supply control unit that includes a microcomputer and controls the plurality of switches, wherein: the sub power storage pack is installed on a lateral center line of the body portion, and a same number of motors of the plurality of motors are installed on each of a left side and a right side of a lateral center line of the sub power storage pack, and a same number of power storage packs of the plurality of power storage packs are installed on each of the left side and the right side, and the power supply control unit specifies at least one power storage pack having a higher current value than other power storage packs, having a corresponding motor having a higher rotational speed than other motors, or having a smaller voltage value than other power storage pack, and turns on at least one of the plurality of switches corresponding to at least one power storage pack to supply an auxiliary current from the sub power storage pack to the at least one power storage pack.

2. The flying body according to claim 1 , wherein the sub power storage pack is installed at a center-of-gravity portion of the flying body.

3. The flying body according to claim 1 , wherein:
the sub power storage pack is connected to each of the plurality of power storage packs by a respective one of the power wirings, and
wiring resistances of the power wirings are equal between the sub power storage pack and the plurality of power storage packs.

4. The flying body according to claim 1 , wherein:
the plurality of power storage packs are distributed at equal distances laterally from the lateral center line of the body portion, and
the power wirings each connecting the sub power storage pack to a respective one of the plurality of power storage packs are set to have an equal length.

5. The flying body according to claim 1 , wherein the sub power storage pack includes a capacity that is smaller than capacities of the plurality of power storage packs.

6. The flying body according to claim 5 , wherein the sub power storage pack has an equal output performance to the plurality of power storage packs.

7. The flying body according to claim 1 , further comprising a DC-DC convertor disposed between the plurality of switches and the sub power storage pack.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Nagase Ryosuke
• Ugaji Masaya

Classifications

• B64C27/10 Primary

  arranged coaxially · CPC title

• B64U2101/30

  for imaging, photography or videography · CPC title

• B64U20/80

  Arrangement of on-board electronics, e.g. avionics systems or wiring · CPC title

• B64U10/14

  with four distinct rotor axes, e.g. quadcopters · CPC title

• Y02T50/60

  Efficient propulsion technologies, e.g. for aircraft · CPC title