Chong H Cho

US Patent:

20210277968, Sep 9, 2021

Filed:

Apr 28, 2020

Appl. No.:

16/860091

Inventors:

- Santa Clara CA, US
- Seoul, KR
Chong Du Cho - Santa Clara CA, US

Assignee:

DdaniGo LLC - Santa Clara CA
Coetec Company Limited - Seoul

International Classification:

F16D 63/00
F16D 55/225
F16D 65/18

Abstract:

A dual motor powered compact drive comprises two electrical motors powering the planetary gear mechanism. The dual drive can provide variable speed and torque. A single electric motor operated braking system with a screw-driven wedged brake pads is described using a compact test set-up. The system comprises at least one motor and a screw shaft connected to transmit the power to a sliding plunger, and braking pads located on a braking disc, and a force sensor applied to measure the braking force, and a device to measure the parameters of the braking motor and the parameters are used as the inputs to establish a control strategy. Systems and methods for monitoring a battery pack including multiple cells are provided. The battery management system further comprises a control strategy for implementing a balancing algorithm. A balancing strategy comprises a determination of battery cells to be balanced, and a calculated balancing current.