In recent years, electric vehicles are developing rapidly in automotive industry. When involved in
accidents, if the batteries of electric cars break, it is likely to cause a short circuit and start a fire. Aimed at
this issue, a car battery protection device based on torsion spring has been designed. The car battery protection
device can deform in a particular pattern in a collision accident. Impact energy of the accident is absorbed by the
deformation, which can significantly reduce impact force on the batteries. Meanwhile, based on the principle of
maximum energy absorption, some crucial parameters of the device can be determined. Furthermore, an impact
simulation conducted on ANSYS software shows that maximum safety factors can be obtained when the material
of car battery protection device is carbon steel. The analysis of “safe space” in the car battery protection device
shows that the device can prevent battery damage effectively in general circumstances, which means the reliability
of the device has been verified. Therefore, when applied to electric vehicles, the car battery protection device,
which can prevent secondary accidents, significantly improves the vehicle security in accidents.
ZHANG Dongming1 (张东明), ZHANG Xiaoyun1* (张晓云), YANG Zhichun1 (杨智淳), YU Junwei2 (俞俊威)
. Design of Car Battery Protection Device Based on Torsion Spring[J]. Journal of Shanghai Jiaotong University(Science), 2017
, 22(5)
: 517
-522
.
DOI: 10.1007/s12204-017-1870-0
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