Why does the aluminum battery pack need a protective plate

How can mechanical design and battery packaging protect EV batteries?

Robust mechanical design and battery packaging can provide greater degree of protection against all of these. This chapter discusses design elements like thermal barrier and gas exhaust mechanism that can be integrated into battery packaging to mitigate the high safety risks associated with failure of an electric vehicle (EV) battery pack.

Does aluminum make a good battery pack?

The larger the battery, the more aluminum makes sense for battery packs,” Asfeth asserted. Bucking that trend is GM’s 9000-lb. (4082-kg) Hummer EV, which uses a multi-material battery enclosure. Tesla also has reduced the amount of aluminum in the battery enclosure for the Model 3 and Model Y compared to what was used in its S and X models.

Why should you use plastic for a battery case?

Using plastics for a battery case can reduce the number of components required by using larger components, which also makes the assembly process more efficient. That also opens up new design approaches for modular cases.

Are plastic batteries suitable for battery packs?

One perception is that plastics are not suitable for battery packs as they cannot prevent thermal runaway and fires. However in testing, an aluminium plate was exposed for 5 minutes to a flame with a temperature of 1100 ºC. The same test on a plate made from long glass fibre polypropylene and a flame retardant (FR) resin reacted very differently.

Which material is best for a battery case?

Glass fibre top covers, bottom covers and impact protection plates can provide a more cost-effective material for battery cases. The most challenging factor is TRP, as the combustion needs to be contained in the box. Then there are EMI, thermal and electrical isolation and mechanical issues of drive loads, crashes and impacts to consider.

Are aluminum battery enclosures a good choice?

Aluminum battery enclosures typically deliver a weight savings of 40% compared to an equivalent steel design. According to Asfeth, the alloys best suited for battery enclosures are the 6000-series Al-Si-Mg-Cu family — alloys that are also highly compatible with end-of-life recycling, he said.