US 12,224,647 B2
Work vehicle and energy storage device having an electric machine and a rotor mass
Randall L. Long, Coffeyville, KS (US); Lashun O. Mowers, Independence, KS (US); and Stacy K. Worley, Coffeyville, KS (US)
Assigned to DEERE & COMPANY, Moline, IL (US)
Filed by Deere & Company, Moline, IL (US)
Filed on Oct. 26, 2021, as Appl. No. 17/452,262.
Prior Publication US 2023/0129826 A1, Apr. 27, 2023
Int. Cl. H02K 7/02 (2006.01); B60K 6/10 (2006.01); B60K 6/485 (2007.10); H02K 21/24 (2006.01)
CPC H02K 7/025 (2013.01) [B60K 6/105 (2013.01); B60K 6/485 (2013.01); H02K 21/24 (2013.01); B60Y 2200/221 (2013.01); B60Y 2200/92 (2013.01); B60Y 2400/11 (2013.01); B60Y 2400/162 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A work vehicle comprising:
a prime mover configured to propel the work vehicle;
a ballast disposed at an end of the work vehicle;
an electric machine comprising a housing within which is contained a stator having a stator mass and a rotor having a rotor mass that is greater than the stator mass, the electric machine being disposed in the ballast at the end of the work vehicle such that the rotor mass provides a rotating ballast weight to stabilize the work vehicle or enhance traction of the work vehicle when the rotor rotates from the flow of electrical current provided to the electric machine, and wherein the rotor of the electric machine rotates to store energy and generate electrical current; and
a power takeoff system mechanically coupled to the prime mover and to the rotor of the electric machine configured to transmit rotational energy from the prime mover to the rotor of the electric machine and from the rotor of the electric machine to the prime mover.