Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
BATTERY VOLTAGE-BASED BATTERY PROTECTION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/095415
Kind Code:
A1
Abstract:
A battery voltage-based battery protection method and device. The method comprises: if a vehicle operates in a driven state, setting a lower limit reference value for battery voltage to be 'a', and an upper limit reference value for battery voltage to be 'b'; detecting the direct current bus voltage of a battery, issuing an undervoltage early warning if the bus voltage u≤a+δ, issuing an overvoltage early warning if the bus voltage u≥b, and limiting the power output, where a+δ is an undervoltage early warning point set for a vehicle in the driven state, 'δ' is defined as the voltage return difference, 'b' is an overvoltage early warning point set for a vehicle in a driven state; issuing an undervoltage warning if the bus voltage u≤a, issuing an overvoltage warning if the bus voltage u≥b+δ, and limiting the power output to 0, where 'a' is an undervoltage warning point set for a vehicle in the driven state, b+δ is the overvoltage warning point set for a vehicle in the driven state, 'δ' is defined as the voltage return difference. The method and device solve the problem of battery damage of a vehicle in a driven state due to the abnormal battery voltage.

Inventors:
JIN CHAO (CN)
WANG HAO (CN)
HAN GUANGHUI (CN)
ZHENG WEI (CN)
ZHANG GUANGLI (CN)
LI XUELIAN (CN)
Application Number:
CN2017/112899
Publication Date:
May 31, 2018
Filing Date:
November 24, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ZHENGZHOU YUTONG BUS CO LTD (450061, CN)
International Classes:
B60L11/18
Foreign References:
CN103043006A2013-04-17
CN102104245A2011-06-22
CN204103460U2015-01-14
CN102694404A2012-09-26
Attorney, Agent or Firm:
ZHENGZHOU RUIXIN INTELLECTUAL PROPERTY AGENCY CO., LTD (NO. 275, 17/FBuilding 2, No. 53 Science Avenue, Zhengzhou Hi-Tech Industrial Development Zon, Zhengzhou Henan 1, 450001, CN)
Download PDF: