US 12,351,278 B2
Electric drive system for craft, such as a surfboard or paddleboard, with cooling means
Nicolas Quendez, Chézy-en-Orxois (FR)
Assigned to MOTION CONCEPT GROUP, Bordeaux (FR)
Appl. No. 17/639,133
Filed by MOTION CONCEPT GROUP, Bordeaux (FR)
PCT Filed Aug. 28, 2020, PCT No. PCT/EP2020/074072
§ 371(c)(1), (2) Date Feb. 28, 2022,
PCT Pub. No. WO2021/038037, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 1909454 (FR), filed on Aug. 28, 2019.
Prior Publication US 2022/0324538 A1, Oct. 13, 2022
Int. Cl. B63B 32/10 (2020.01); B63B 34/10 (2020.01); B63B 79/40 (2020.01); B63H 21/17 (2006.01); B63H 21/38 (2006.01); B63H 23/34 (2006.01); H02K 1/2791 (2022.01); H02K 9/22 (2006.01)
CPC B63B 32/10 (2020.02) [B63B 34/10 (2020.02); B63B 79/40 (2020.01); B63H 21/17 (2013.01); B63H 21/38 (2013.01); B63H 23/34 (2013.01); H02K 1/2791 (2022.01); H02K 9/22 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electric motorization system for a craft, configured to be connected to a source of electric power, the system comprising:
a watertight enclosure intended to be integrated into or on the craft, in which enclosure are arranged a rotor and a stator, and
a shaft connected by a first end to the rotor and projecting in a watertight manner, with respect to the enclosure, outside of the enclosure by a second end opposite its first end, said shaft being adapted to be connected by its second end to means of propulsion of a craft, so that when the system is supplied with electrical energy, the rotor begins to rotate and drives the shaft in this rotation, the system further comprising cooling means,
wherein said cooling means comprise at least a first elongated assembly, at least partially metallic, a first end of which is arranged inside the enclosure, the said elongated assembly protruding in a watertight manner outside the enclosure by a second end opposite its first end, so as to allow conduction of heat from the inside to the outside of the enclosure along said first elongated assembly; and
further comprising an electronic control unit configured to control the operation and the electrical energy supply of the said system, and fastened to the stator, so as to create a thermal path between the control unit and the first elongated assembly to allow the conduction of the heat emitted by the control unit to the outside of the enclosure along said thermal path and the first elongated assembly.