US 9,438,085 B2 · Electromechanical converter system for an electric vehicle with enhanced cooling

Abstract

The invention relates to a converter system (1, 1′, 1″) for an electric vehicle and in particular a lightweight electric vehicle. The converter system (1, 1′, 1″) has a supporting housing (10, 10′, 10″) for connecting to the vehicle, has an electromechanical energy converter arranged at least partially in the supporting housing (10, 10′, 10″), said electromechanical energy converter having at least one stator (21, 21′) and a rotor (22, 22′) which is rotatable relative to the stator (21, 21′) about a drive axis (7, 40), and has a power transmitting device which connects the rotor (22, 22′) to a connection element. To permit a particularly cheap design which is easy to maintain and to reduce thermal problems, the supporting housing (10, 10′, 10″) has at least one first (14) and one second axial portion (15). wherein (the first portion (14) has a greater diameter than the second portion (15) in a direction transversely with respect lo the drive axis (7, 40). Here, the second portion (15) of the supporting housing (10, 10′, 10″) is formed for mourning the rotor (22, 22′) and/or the connection element. The rotor (22, 22′) and stator (21, 21′) of the energy converter are arranged at least partially in the first portion (14) of the supporting housing (10, 10′, 10″).

Claims17

Dependent claims

Electromechanical converter system for an electric vehicle, in particular for a light electric vehicle, comprising

a support housing for connection to the vehicle, the support housing comprising at least a first axial section and a second axial section;
an electromechanical energy converter arranged at least partially in the support housing with at least one stator and one rotor, the stator and the rotor are at least partially arranged in the first axial section of the support housing and the rotor being rotatable about a drive axis relative to the stator, and
a power transmission device which connects the rotor to a connecting element, the connecting element comprising a hollow wheel, formed as a hub shell;
wherein
the power transmission device comprises a planetary gear, the planetary gear being arranged in the hollow wheel;
and wherein
in axial direction next to the hollow wheel the support housing is arranged so that the second axial section of the support housing is formed for bearing of the hollow wheel and the first axial section is formed for housing the stator and the rotor, said first axial section is arranged substantially adjacent to and outside of the hollow wheel;
the first axial section of the support housing having a larger maximum linear expansion in a radial direction than the second axial section of the support housing.

5 more elements

Dependencies are inferred from the claim text.

Electromechanical converter system for an electric vehicle with enhanced cooling

Life of this patent

Electromechanical converter system for an electric vehicle with enhanced cooling

Life of this patent

Abstract

Claims17