This page will cover some of the basic information for the battery enclosure.
From ASC 2024 Regulations (https://www.americansolarchallenge.org/ASC/wp-content/uploads/2021/12/ASC2024-Regs-EXTERNAL-RELEASE-A.pdf):
All registered and sealed battery modules, supplemental batteries, battery protection circuitry, and main fuses must be fully contained in enclosures that are electrically isolated from the solar car
The enclosures must be constructed from non-conductive, electrolyte-resistant material
No more than two separate such enclosures may be used for the main energy storage
Enclosures must be designed such that they can be removed from the vehicle and placed in impound per Regs. 12.18 and 14.12
The resistance measured between the battery terminals and any portion of the solar car chassis shall be greater than 1 MΩ for applied potentials up to 500 V
The battery enclosures must be secured to the solar car chassis so as to prevent them or the modules within from coming loose in the event of an accident or rollover
Battery enclosures may be equipped with a forced ventilation system. Such ventilation systems must pull exhaust to the exterior of the solar car and must be directly connected to the exterior of the vehicle away from any airstream that may reach the driver.
External supplementary cooling of the battery pack is not permitted beyond the ventilation requirements listed in Reg. 8.4.D unless the external cooling is powered by the main battery pack and is physically contained and secured to the solar car, or in an emergency situations
Safety considerations:
Prevent initial thermal runaway explosions from reaching driver
Must have enough warning time to stop the car and the allow the driver to exit
Allow for installation of temperature monitoring at various locations within the enclosure
Other constraint/criteria considerations:
Allows for mounting of modules, other hardware within the enclosure
Allows for easy mounting/detaching & easily accessible for maintenance
Waterproof