公开(公告)号：US10850601B2

公开(公告)日：2020-12-01

申请号：US16745953

申请日：2020-01-17

Applicant: Beijing Institute of Technology

Inventor： Lijin Han ,  Changle Xiang ,  Hui Liu ,  Weida Wang ,  Yue Ma ,  Lili Xu

IPC: B60K6/36 ,  B60K6/28 ,  B60K6/30 ,  F16H37/06 ,  B60K6/365 ,  B60K6/387 ,  B60K6/442 ,  B60K6/24 ,  B60K6/547 ,  B60K6/26 ,  B60K6/38

Abstract: The present invention discloses an electromechanical compound transmission device for a tracked vehicle. The electromechanical compound transmission device includes a front transmission mechanism, a power coupling mechanism, an independent drive mechanism, and convergent planetary gearsets arranged on both sides of the power coupling mechanism. The present invention can not only implement driving, steering, and other functions of a vehicle, but also provide sufficient electric energy for a vehicle-mounted device. In other words, a series mode can be adopted to satisfy a torque output requirement, and is mainly used for low and medium-low speed driving, as well as reverse driving and climbing steep slopes; and a series-parallel mode can also be adopted to satisfy requirements of high and medium-high speed driving, and can achieve relatively high transmission efficiency and fuel economy.

公开(公告)号：US10967730B2

公开(公告)日：2021-04-06

申请号：US16808841

申请日：2020-03-04

Applicant: Beijing Institute of Technology ,  Baotou Sansi Technology Development Co., Ltd.

Inventor： Weida Wang ,  Changle Xiang ,  Yue Ma ,  Shaoping Lv ,  Lili Xu

IPC: B60K6/543 ,  B60K6/365 ,  B60W30/182 ,  F16H3/62 ,  B60K6/442

Abstract: The present invention discloses a method for switching modes of an electromechanical transmission system which includes a clutch CL0, a motor A, a clutch CL1, a brake B1, a motor B and three planet rows K1, K2 and K3. The electromechanical transmission system according to the present invention achieves two different structural modes of EVT1 and EVT2 by changing states of the clutch CL0 and the brake B1. The EVT1 mode is mainly a system running state at a low vehicle speed under a high driving torque demand, and the EVT2 mode is mainly a system driving state at a high vehicle speed under a low driving torque demand. Mode switching without speed difference and power interruption can be achieved by switching vehicle speed selection and reasonable adjustment of engine and motor torque.

公开(公告)号：US20210031613A1

公开(公告)日：2021-02-04

申请号：US16808841

申请日：2020-03-04

Applicant: Beijing Institute of Technology ,  Baotou Sansi Technology Development Co., Ltd.

Inventor： Weida WANG ,  Changle Xiang ,  Yue Ma ,  Shaoping Lv ,  Lili Xu

IPC: B60K6/543 ,  B60K6/365 ,  B60K6/442 ,  B60W30/182 ,  F16H3/62

Abstract: The present invention discloses a method for switching modes of an electromechanical transmission system which includes a clutch CL0, a motor A, a clutch CL1, a brake B1, a motor B and three planet rows K1, K2 and K3. The electromechanical transmission system according to the present invention achieves two different structural modes of EVT1 and EVT2 by changing states of the clutch CL0 and the brake B1. The EVT1 mode is mainly a system running state at a low vehicle speed under a high driving torque demand, and the EVT2 mode is mainly a system driving state at a high vehicle speed under a low driving torque demand. Mode switching without speed difference and power interruption can be achieved by switching vehicle speed selection and reasonable adjustment of engine and motor torque.