US 11,859,368 B2
Electric powertrain and a working machine
Daniel Stålberg, Eskilstuna (SE); and Per Mattsson, Sölvesborg (SE)
Assigned to VOLVO CONSTRUCTION EQUIPMENT AB, Eskilstuna (SE)
Appl. No. 17/785,305
Filed by VOLVO CONSTRUCTION EQUIPMENT AB, Eskilstuna (SE)
PCT Filed Dec. 19, 2019, PCT No. PCT/EP2019/086228
§ 371(c)(1), (2) Date Jun. 14, 2022,
PCT Pub. No. WO2021/121594, PCT Pub. Date Jun. 24, 2021.
Prior Publication US 2023/0029811 A1, Feb. 2, 2023
Int. Cl. E02F 9/20 (2006.01); B60K 1/02 (2006.01); B60K 17/08 (2006.01); B60K 17/28 (2006.01); F16H 3/085 (2006.01); B60K 25/06 (2006.01); B60K 25/00 (2006.01); E02F 3/28 (2006.01); E02F 9/22 (2006.01)
CPC E02F 9/202 (2013.01) [B60K 1/02 (2013.01); B60K 17/08 (2013.01); B60K 17/28 (2013.01); B60K 25/06 (2013.01); F16H 3/085 (2013.01); B60K 2025/005 (2013.01); E02F 3/283 (2013.01); E02F 9/22 (2013.01); F16H 2200/0021 (2013.01); F16H 2200/0039 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electric powertrain for a working machine, the powertrain comprising:
a first electric machine,
a second electric machine,
at least one propulsion axle for propulsion of the working machine,
a transmission assembly comprising:
a first input shaft drivingly connected to the first electric machine,
a second input shaft drivingly connected to the second electric machine,
a first output shaft drivingly connected to the at least one propulsion axle, the first input shaft and the second input shaft being selectively drivingly connectable to the first output shaft,
at least one second output shaft for power take-off from the electric powertrain, the second input shaft being drivingly connected to the at least one second output shaft,
a set of selectively engageable gears comprising at least two selectable gear ratios for transfer of torque,
wherein at least the first input shaft is drivingly connectable to the first output shaft via the set of selectively engageable gears,
characterized in that the second input shaft is independently selectively drivingly connectable to the first output shaft.