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Table of Contents

Ownership

...

  • need non conductive material on the inside

  • strength

  • access cover

Battery Box Cover

  • possibility of adding ceramic fibre / ceramic blanket / ceramic paper on the inside to contain heat

  • able to service the battery modules

    • entire area above modules must be open (able to see it ) when cover is open

    • modules will be installed by lowering them vertically into their slots

Rear Electronics cover

  • during egress, this part will be climbed over by someone

    • must be strong to hold people’s weight

  • current goal: separating high voltage and low voltage sections inside rear electronics enclosure

    • there will be two supports inside the cover, running along the length of the catamaran

...

  • access cover needs

    • power supply input

    • AUX battery input

    • USB ports for phone charging

Recap of ASC Battery Enclosure Regulations

Isolation

  • resistance measured between battery terminals and any portion of the solar car chassis shall be greater than the 1MΩ, for applied potential up to 500V

...

  • required to provide impound box that fully contains the battery enclosure

    • box must have provision such that an Officer can secure with a maximum of two locks / seals

    • must be constructed that it does not contain external hardware that can be removed to access the battery box without breaking the seal

Egress Regulation

Performance Requirement

  • shall define primary and secondary direction for egress

    • must be separated by at least 90 degrees and cannot be on the same side of the car

  • able to exit the car unassisted

    • should take no more than 10 sec for occupant’s primary direction and 15 sec for occupant’s secondary direction

...

Risk/Unknown

Order of Importance

Mitigation

i.e Headlight brightness doesn’t meet regs

1

Use brightness sensor to compare our headlights with listed regulation standards

Electrical Injury

Make sure that the materials used are conductive, and checking that there are no potential leaks

Cover not being able to support weight of the occupants

Make sure that the materials has enough strength and make sure that there is support given

Burn from overheating

Make sure that cooling system works and not violating the requirements and regulations

Materials Research

Battery :

Normal operation: 60C
During thermal runaway: 1000C

Fibreglass:

Melting point: 1121C

Softening point: 846C

FEA Stimulation Research

  • can predict heat transfer (maybe we don’t have to use solidworks then?)

Google Home Aesthetic

  • greyish- warm/soft white

  • attach of fabric (grey, or it could be coloured)

    • according to Google fabric materials are:

      • Fabric: 33% nylon, 67% polyester

      • Hydrophobic and antimicrobial coating

      • Polycarbonate (hard plastic)

  • could add colour to fibreglass / or colour it afterward

    • if we are sticking with google home aesthetic, just need to make sure that it look like the white colour they use

    • Image Added

      maybe the first 3 colours? white colour with a tint of grey/beige

Planning – Seal

What to include:

  • top of each cover must be marked with letters at least 10mm high with

    • “Caution: Chemical Hazard”

    • “High Voltage”

    • type of the battery (ex. Li-ion)

    • any other standard hazard marking specific to the type of battery as well

  • indicates contravention of the regulation

    • provisions (like regulations I believe) to seal battery/enclosure - be made by the team

    • to prevent unauthorized actions

Style:

  • MS fonts, colours,

Access Point

Helping Research – Renzo

Click Bond

Youtube videos