Dynamic response characteristics of soft-pack lithium batteries for light consumer drones under mechanical strong impact loads

GUO Yazhou; LIU Xiaochuan; BAI Chunyu; WANG Jizhen

doi:10.11883/bzycj-2024-0320

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GUO Yazhou, LIU Xiaochuan, BAI Chunyu, WANG Jizhen. Dynamic response characteristics of soft-pack lithium batteries for light consumer drones under mechanical strong impact loads[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0320

Citation:

GUO Yazhou, LIU Xiaochuan, BAI Chunyu, WANG Jizhen. Dynamic response characteristics of soft-pack lithium batteries for light consumer drones under mechanical strong impact loads[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0320

Citation:

GUO Yazhou, LIU Xiaochuan, BAI Chunyu, WANG Jizhen. Dynamic response characteristics of soft-pack lithium batteries for light consumer drones under mechanical strong impact loads[J]. Explosion And Shock Waves. doi: 10.11883/bzycj-2024-0320

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Dynamic response characteristics of soft-pack lithium batteries for light consumer drones under mechanical strong impact loads

doi: 10.11883/bzycj-2024-0320

National Key Laboratory of Strength and Structural Integrity, Aircraft Strength Research Institute of China, Xi’an 710065, Shaanxi, China

Received Date: 2024-08-31
Rev Recd Date: 2024-12-03

Available Online: 2024-12-04

Abstract

Abstract

In order to study the dynamic response mode and explosion ignition characteristics of lithium battery in light and small unmanned aerial vehicle (UAV) under high-energy impact, and evaluate the safety performance of lithium battery under dynamic impact, this paper takes the soft-package lithium battery as the research object, and have used the drop-hammer impact and gas gun impact test methods to carry out the drop hammer impact of the soft-package battery pack and the high-velocity impact of the battery on the aluminum plate. The deformation mode and ignition of the soft-package lithium battery under different battery power after impact were studied respectively. Combined with the mechanical deformation response and ignition characteristics of the battery, the impact safety of the small soft-package lithium battery was analyzed. The results show that the ignition risk of small soft-package lithium battery after being impacted by loads in the out-of-plane direction under the conditions of conventional battery shell protection is much higher than that under the condition of out-of-plane load impact. The ignition risk of lithium battery is obviously related to battery power and impact velocity. The thickness of the impacted aluminum plate has little effect on the ignition risk of lithium battery. Due to the buffering effect of the external battery shell, the lithium battery for light and small UAV has a relatively low risk of ignition after an unpredictable heading impact accident at low altitude in the urban environment.
- soft-package lithium battery,
- high-speed impact,
- mechanical load,
- deformation mode,
- ignition risk

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References(26)

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