US 12,280,659 B1
Electric vehicle drive apparatus
Sun-Sung Kwon, Anyang-si (KR); Chon-Ok Kim, Yongin-si (KR); Baek-Yu Kim, Hwaseong-si (KR); Chul-Min Ahn, Anyang-si (KR); Sang-Jin Park, Hwaseong-si (KR); Sung-Gon Byun, Hwaseong-si (KR); Won-Seok Lee, Suwon-si (KR); Jun-Young Ha, Gwacheon-si (KR); Su-Hyeon Maeng, Seoul (KR); Dong-Hui Cheon, Seoul (KR); Ji-Eun Kim, Hwaseong-si (KR); Yo-Han Kim, Busan (KR); Jae-Hyuk Seo, Anyang-si (KR); Jong-Ho Jung, Hwaseong-si (KR); Hyun-Ho Lee, Seoul (KR); Yun-Kyung Ji, Seoul (KR); Jong-Yun Park, Yongin-si (KR); and Tae-Sic Park, Suwon-si (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Mar. 8, 2024, as Appl. No. 18/600,166.
Claims priority of application No. 10-2023-173499 (KR), filed on Dec. 4, 2023.
Int. Cl. F16H 48/36 (2012.01); B60K 1/02 (2006.01); B60K 17/12 (2006.01); B60K 17/16 (2006.01)
CPC B60K 17/16 (2013.01) [B60K 1/02 (2013.01); B60K 17/12 (2013.01); F16H 48/36 (2013.01); B60Y 2300/82 (2013.01); F16H 2048/364 (2013.01); F16H 2702/02 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An electric vehicle drive apparatus for decreasing a drive speed of a motor and transferring the decreased drive speed to an output shaft, the apparatus comprising:
a first planetary gear set comprising three first planetary gear elements, the three first planetary gear elements comprising a first sun gear, a first carrier, and a first ring gear, wherein:
a first element of the three first planetary gear elements is connected to the motor; and
a second element of the three first planetary gear elements is connected to a first output shaft;
a second planetary gear set comprising three second planetary gear elements, the three second planetary gear elements comprising a second sun gear, a second carrier, and a second ring gear, wherein:
a first element of the three second planetary gear elements is connected to a third element of the three first planetary gear elements;
a second element of the three second planetary gear elements is connected to a second output shaft; and
a third element of the three second planetary gear elements is fixed; and
a third planetary gear set comprising three third planetary gear elements, the three third planetary gear elements comprising a third sun gear, a third carrier, and a third ring gear, wherein:
a first element and a second element of the three third planetary gear elements are connected to two elements of the three first planetary gear elements, respectively, and a third element of the three third planetary gear elements is connected to a torque vectoring motor,
wherein the first element of the three third planetary gear elements is connected to the third element of the three first planetary gear elements, and the second element of the three third planetary gear elements is connected to the first element of the first planetary gear elements or to the second element of the first planetary gear elements,
wherein a gear ratio of the third planetary gear set results from a combination of gear ratios that achieve a speed of o of the third element of the third planetary gear set connected to the torque vectoring motor in a straight forward traveling condition in which a differential does not occur; and
wherein in a case in which an element of the three third planetary gear elements is rotated in a same direction as the output shaft by driving the torque vectoring motor in a first direction, a speed of the first output shaft is increased, and a speed of the second output shaft is decreased.