公开(公告)号：US09963166B2

公开(公告)日：2018-05-08

申请号：US15316069

申请日：2015-11-13

Applicant: BYD COMPANY LIMITED

Inventor： Jinze Xu ,  Xingchi Wu ,  Wengang Luo ,  Chao Zhang ,  Hongjun Wang ,  Zhenpai Luan

IPC: B62D5/04 ,  B60L1/00 ,  H02P4/00

CPC classification number: B62D5/0481 ,  B60L1/00 ,  B60L1/003 ,  B60L2210/12 ,  B60L2210/14 ,  B60R16/03 ,  B60Y2200/91 ,  B60Y2400/112 ,  B62D5/046 ,  H02P4/00 ,  Y02T10/7258

Abstract: A steering power system for an electric vehicle and a method for controlling same are provided. The steering power system includes: a steering motor; a steering motor controller, configured to control the steering motor; a high voltage power battery, configured to output a first voltage; a low voltage storage battery, configured to output a second voltage; a buck DC-DC converter, configured to convert the first voltage into the second voltage for being supplied to the low voltage storage battery when a high voltage system works; and a boost DC-DC converter, configured to convert the second voltage into the first voltage. When the high voltage system has an abnormal power failure, the boost DC-DC converter converts the second voltage outputted from the low voltage storage battery into the first voltage for being supplied to the steering motor controller.

公开(公告)号：US20170106899A1

公开(公告)日：2017-04-20

申请号：US15316069

申请日：2015-11-13

Applicant: BYD COMPANY LIMITED

Inventor： Jinze Xu ,  Xingchi WU ,  Wengang Luo ,  Chao Zhang ,  Hongjun Wang ,  Zhenpai Luan

IPC: B62D5/04 ,  H02P4/00 ,  B60L1/00

CPC classification number: B62D5/0481 ,  B60L1/00 ,  B60L1/003 ,  B60L2210/12 ,  B60L2210/14 ,  B60R16/03 ,  B60Y2200/91 ,  B60Y2400/112 ,  B62D5/046 ,  H02P4/00 ,  Y02T10/7258

Abstract: A steering power system for an electric vehicle and a method for controlling same are provided. The steering power system includes: a steering motor; a steering motor controller, configured to control the steering motor; a high voltage power battery, configured to output a first voltage; a low voltage storage battery, configured to output a second voltage; a buck DC-DC converter, configured to convert the first voltage into the second voltage for being supplied to the low voltage storage battery when a high voltage system works; and a boost DC-DC converter, configured to convert the second voltage into the first voltage. When the high voltage system has an abnormal power failure, the boost DC-DC converter converts the second voltage outputted from the low voltage storage battery into the first voltage for being supplied to the steering motor controller.