What Causes Battery Fires in Solar Car Vehicles?
Not separating high and low voltage lines effectively - taking into consideration that wires will move when the car is being driven
Battery pack build, including but not limited to:
Weak welds
Wiring of the battery pack
Lack of fusing
No clearance against conductive fiberglass
Other things to consider:
Quick removal method of battery from the vehicle to save vehicle from the fire
Sources:
https://www.reddit.com/r/solarracing/comments/136te97/cause_of_battery_fires/
*work in progress