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ASC regulations is more than just impounding and safety but those were the main ones we kept in the back of our minds while designing. Safety is just to make sure our box doesn’t separate from the car due to a crash or a roll-over (though the design of the car and ASC regulations make it impossible for a roll-over to occur anyway). Impounding is a rule that makes it so that the batteries are not accessible from outside of the box. This rule is in place to prevent teams from secretly replacing their modules with fully charged ones or from secretly charging the batteries from an external source. The event gives 4 of these seals shown in Figure 2, which is used to “lock” the box and make it impossible to access without breaking the seals (which can only be done with permission from the organizers and will be monitored, probably).
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Design
The full dimension of the box is 693.25 x 400 x 235 (mm). The box itself is made up of fiberglass panels attached to an aluminum frame. On the front and back are going to be two 120mmx120mm Noctua IPPC NF-F12 3000 PWM fans for cooling.
The box sits on four steel flats and is also bolted to two more flats on the front and back to prevents lateral movement.
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The modules will sit as shown in Figure 5, the CAD does not yet show the electrical components like the BMS boards that need to be attached to the modules. The modules shown below are not the complete versions either, partly because rendering the full modules with every single cell takes a toll on my computer, but the figure below is enough to get the idea across.
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