US 12,077,048 B2
Hybrid electric drive system for a vehicle
Rohit Arvind Godkar, Thane (IN); Mehul Satish Nachane, Thane (IN); and Sharad Rajaram Godkar, Mumbai (IN)
Assigned to NEXTGEN TECH INITIATIVES PVT LTD, Thane (IN)
Filed by NEXTGEN TECH INITIATIVES PVT LTD, Thane (IN)
Filed on Oct. 21, 2022, as Appl. No. 18/048,620.
Claims priority of application No. 202121048405 (IN), filed on Oct. 23, 2021.
Prior Publication US 2023/0173908 A1, Jun. 8, 2023
Int. Cl. B60K 6/36 (2007.10); B60K 6/365 (2007.10); B60K 6/52 (2007.10)
CPC B60K 6/365 (2013.01) [B60K 6/52 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A hybrid electric drive system (106), said hybrid electric drive system (106) comprising:
an electric motor (108); and
an epicyclic gear system and mode controller (110);
wherein the hybrid electric drive system (106) is configured between an Internal Combustion (IC) engine assembly (118) of a vehicle (100), an IC engine gearbox (116) of the vehicle (100) and a rear axle differential (238),
the hybrid electric drive system (106) performing a dual role of allowing drive from the IC engine assembly (118) and the electric motor (108) to be transmitted individually to wheels of the vehicle (102, 104), and adding the drive from the IC engine assembly (118) and the electric motor (108) together, and seamlessly transmitting to the wheels (102, 104) of the vehicle,
the epicyclic gear system and mode controller (110) allows output to be taken from a sun gear (404) of the epicyclic gear system and input to be given to at least one of planet carrier (426) or a ring gear (406) of the epicyclic gear system,
power from the hybrid electric drive system (106) is transmitted by a common propeller shaft (236) of the vehicle (100) to the rear axle (238) through a differential gear,
the power from both the IC engine assembly (118) and the electric motor (108) is transmitted to the sun gear (404) such that the sun gear (404) transmits the power to the common propeller shaft (236),
the epicyclic gear system and the mode controller (110) comprises a first pinion gear (416) that locks and unlocks planet carrier (426), and a third pinion gear (408) that locks and unlocks the ring gear (406) of the epicyclic gear system, and
the first and third pinion gears (416, 408) are respectively mounted on a first lever (308) and a second lever (310)—that move to different positions to enable locking or unlocking of at least one of the planet carrier (426) and the ring gear (406) for enabling different driving modes.