Electric motorcycle

Patent metadata

Field	Value
Publication number	US-11511822-B2
Application number	US-202017594839-A
Country	US
Kind code	B2
Filing date	May 6, 2020
Priority date	Jun 11, 2019
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

An electric motorcycle includes a housing for housing an electric motor and/or a transmission. The housing is positioned at the center of the electric motorcycle in a front view. An internal cooling device and/or an electronic component and two cooling elements extend outward from opposite sides of the housing. Exterior cooling ribs are arranged on the cooling elements. The cooling ribs extend in the longitudinal direction of the electric motorcycle, such that the cooling elements and the cooling ribs are directly in contact with the air surrounding the electric motorcycle. The cooling device and/or the electronic component is, at least in portions, housed in and thermally connected to at least one of the cooling elements.

First claim

What is claimed is:

1. An electric motorcycle, comprising:
a housing positioned at a transverse center of the electric motorcycle;
an electric motor accommodated in the housing;
one or more of an internal cooling device and an electronic component; and
two cooling elements attached to, and extending away from, opposite sides of the housing in a direction horizontally transverse to a longitudinal direction of the electric motorcycle,
wherein
the electric motor is arranged transversely between the two cooling elements such that, in the longitudinal direction, the electric motor is not within the two cooling elements,
outer cooling fins arranged on an outside of each of the two cooling elements,
the outer cooling fins extend in a longitudinal direction of the electric motorcycle such that the two cooling elements and their respective cooling fins are in contact with the surrounding air of the electric motorcycle,
the one or more of the internal cooling device and the electronic component are accommodated at least in sections in at least one of the two cooling elements,
the one or more of the internal cooling device and the electronic component are connected thermally to the at least one of the two cooling elements such that thermal energy from the one or more of the internal cooling device and the electronic component is dissipated via the at least one of the two cooling elements to the surroundings of the electric motorcycle,
at least one of the two cooling elements has a cavity configured to receive at least one or more of the internal cooling device and the electronic component, and
the at least one of the two cooling elements includes inner cooling fins protruding into the cavity.

2. The electric motorcycle according to claim 1 , wherein
the outer cooling fins are formed in one piece on the two cooling elements.

3. The electric motorcycle according to claim 2 , wherein
on each of the two cooling elements, at least one of the outer cooling fins runs around a respective one of the two cooling elements in a circumferentially closed manner.

4. The electric motorcycle according to claim 1 , wherein
on each of the two cooling elements, at least one of the outer cooling fins runs around a respective one of the two cooling elements in a circumferentially closed manner.

5. The electric motorcycle according to claim 1 , wherein
the internal cooling device includes one or more of
a liquid cooler for a component of the electric motorcycle, and
a cooler for components of the electric motorcycle which are remote from the cooling element.

6. The electric motorcycle according to claim 5 , wherein
the electronic component includes one or more of a power electronics unit and a charging electronics unit.

7. The electric motorcycle according to claim 1 , wherein
the electronic component includes one or more of a power electronics unit and a charging electronics unit.

8. The electric motorcycle according to claim 1 , wherein
the inner cooling fins in the cavity are connected to one or more of the internal cooling device and the electronic component.

9. The electric motorcycle according to claim 1 , wherein
the two cooling elements and the outer cooling fins are formed from a light metal.

10. The electric motorcycle according to claim 1 , wherein
the two cooling elements are arranged on the housing at a middle or lower third of a height of the housing,
the two cooling elements end are spaced by at least 50 mm from upper and lower surfaces of the housing and are shorter in the longitudinal direction than the housing.

11. The electric motorcycle according to claim 1 , wherein
the two cooling elements each have a horizontal width that is at least 40% of a maximum width of the housing.

12. The electric motorcycle according to claim 1 , wherein
a spacing of a point of each cooling element furthest away from a center plane of the electric motorcycle, the center plane being aligned with the longitudinal direction, is at least 35% of an overall width of the electric motorcycle.

13. The electric motorcycle according to claim 1 , wherein
the two cooling elements are arranged in a mirror-inverted manner with respect to a center plane of the electric motorcycle aligned with the longitudinal direction.

14. The electric motorcycle according to claim 1 , wherein
the housing is configured to accommodate the electric motor and a transmission.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Baeumel Rainer
• Graf Hubert
• Hoehl Johannes
• Kallich Stefan
• Traub Florian

Classifications

• B60K2001/005

  the electric storage means · CPC title

• B60Y2200/12

  Motorcycles, Trikes; Quads; Scooters · CPC title

• B60K11/06

  with air cooling · CPC title

• B62K11/04 Primary

  characterised by the engine being between front and rear wheels · CPC title

• B60K11/02

  with liquid cooling · CPC title