US 12,451,780 B2
Electric axial flux machine
Christoph Raber, Ottweiler-Steinbach (DE); René Daikeler, Sasbach (DE); and Shen Ding, Achern (DE)
Assigned to Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
Appl. No. 18/278,432
Filed by Schaeffler Technologies AG & Co. KG, Herzogenaurach (DE)
PCT Filed Feb. 7, 2022, PCT No. PCT/DE2022/100102
§ 371(c)(1), (2) Date Aug. 23, 2023,
PCT Pub. No. WO2022/179659, PCT Pub. Date Sep. 1, 2022.
Claims priority of application No. 102021104669.6 (DE), filed on Feb. 26, 2021.
Prior Publication US 2024/0136902 A1, Apr. 25, 2024
Prior Publication US 2024/0235351 A9, Jul. 11, 2024
Int. Cl. H02K 21/02 (2006.01); H02K 1/18 (2006.01); H02K 7/08 (2006.01)
CPC H02K 21/026 (2013.01) [H02K 1/182 (2013.01); H02K 7/083 (2013.01); H02K 2213/03 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electric axial flux machine, comprising:
a stator with a first stator element and with a second stator element arranged spaced apart axially from the first stator element;
a rotor with a rotor body arranged on a rotor shaft, the rotor body comprising a disk arranged axially between the first stator element and the second stator element;
wherein the first stator element and the second stator element are arranged movably in an axial direction in relation to the rotor body;
an adjustment device configured to adjust the first stator element and the second stator element in the axial direction in order to set an air gap; and
the adjustment device is configured to adjust the first stator element and the second stator element in the axial direction depending on a torque which is to be transmitted via the rotor shaft and which generates a resulting supporting moment on the first stator element and on the second stator element;
wherein the adjustment device comprises at least one spring device which acts on the first stator element and on the second stator element counter to a magnetic attraction force between the rotor body and the stator, the spring device comprises a first spring element, a second spring element and a third spring element, the first spring element comprises an axially centrally arranged leaf spring assembly arrangement with a plurality of individual leaf spring assemblies and the second spring element comprises a disk spring arranged axially between the first spring element and the first stator element, and the third spring element comprises a disk spring arranged axially between the first spring element and the second stator element.