US 12,227,076 B2
Hybrid power drive system
Xiangdong Xu, Shanghai (CN); Jie Gu, Shanghai (CN); Yi Shi, Beijing (CN); Lin Fan, Shanghai (CN); and Jiancheng Xin, Shanghai (CN)
Assigned to BorgWarner US Technologies LLC, Wilmington, DE (US)
Appl. No. 17/760,167
Filed by BorgWarner US Technologies LLC, Wilmington, DE (US)
PCT Filed Feb. 4, 2021, PCT No. PCT/CN2021/075292
§ 371(c)(1), (2) Date Aug. 4, 2022,
PCT Pub. No. WO2021/155823, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 202010081754.X (CN), filed on Feb. 6, 2020.
Prior Publication US 2023/0049565 A1, Feb. 16, 2023
Int. Cl. B60K 6/442 (2007.10); B60K 6/387 (2007.10); B60K 6/547 (2007.10)
CPC B60K 6/442 (2013.01) [B60K 6/387 (2013.01); B60K 6/547 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A hybrid power drive system comprising:
an internal combustion engine having a crankshaft;
a first electric motor which is an outer-rotor electric motor having an outer-rotor which is rigidly coupled with the crankshaft and rotates with the crankshaft;
a transmission having an input shaft, an output shaft, a drive gear, a differential gear and a countershaft, wherein the output shaft is cylindrical and coaxially arranged with the input shaft to rotate around the input shaft, the drive gear is disposed on the output shaft, and the countershaft has gears, wherein the drive gear is coupled, via the gears of the countershaft, to the differential gear;
a second electric motor connected to one of the countershaft gears via a gear; and
a clutch, which is disposed between the first electric motor and the transmission and is coupled with the input shaft of the transmission, wherein the clutch is configured to be switched between the following two positions:
an engagement position, wherein the clutch engages with the outer-rotor; and
a separation position, wherein the clutch disengages from the outer-rotor.