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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 (Yutong Industrial Park, Yutong RoadZhengzhou, Henan 1, 450061, CN)
WANG, Hao (Yutong Industrial Park, Yutong RoadZhengzhou, Henan 1, 450061, CN)
HAN, Guanghui (Yutong Industrial Park, Yutong RoadZhengzhou, Henan 1, 450061, CN)
ZHENG, Wei (Yutong Industrial Park, Yutong RoadZhengzhou, Henan 1, 450061, CN)
ZHANG, Guangli (Yutong Industrial Park, Yutong RoadZhengzhou, Henan 1, 450061, CN)
LI, Xuelian (Yutong Industrial Park, Yutong RoadZhengzhou, Henan 1, 450061, CN)
Application Number:
CN2017/112899
Publication Date:
May 31, 2018
Filing Date:
November 24, 2017
Export Citation:
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Assignee:
ZHENGZHOU YUTONG BUS CO., LTD. (Yutong Industrial Park, Yutong RoadZhengzhou, Henan 1, 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)
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