Battery pack collapse

4 FAQs about [Battery pack collapse]

What happens if a battery-pack is damaged by a collision?

Collisions can deform the bottom shell and cause compression on the battery module. The honeycomb structure is glued to the front of the battery-pack’s bottom shell in order to enhance the safety performance of the battery-pack system under collision conditions. The obstacle is set as a fixed rigid body.

What happens if a T-battery pack is damaged?

The damage observed in the TV1, TV2, TV3, and TV5 cells within the T-battery pack is consistent: each battery is fractured at the center, causing the jellyroll to be compressed toward the ends of the battery.

Why does a C-battery pack damage progressively from the top to the bottom?

It is evident that, in the C-battery pack, damage degree diminishes progressively from the top to the bottom battery cell. This behavior is attributed to the dispersion of the load among the upper layer (CV2 and CV5 cells) and the lower layer (CV7 and CV8 cells).

How does impact velocity affect a battery pack?

With the increase of impact velocity, the battery pack exhibits a pronounced strain rate effect, with a progressive transition from extrusion failure to brittle fracture. This transition is characterized by bending fractures in T-battery packs and internal jellyroll cracking in C-battery packs.

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