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By Paul Lienert
(Reuters) – The most recent technology of structural batteries for electrical automobiles is available in a wide range of sizes and shapes.
Structural battery packs are so referred to as as a result of they’re designed to strengthen the automobile’s physique and chassis, whereas boosting driving vary at a decrease price. There are various methods to perform these duties by completely different battery chemistries and parts.
Engineers communicate of the standard “Russian nesting doll” technique of constructing battery packs: Begin with the battery cells, which then are assembled into modules and at last loaded into a big pack.
If that pack is mounted on to the automobile body or physique and helps to stiffen and strengthen it, it’s a “structural” battery.
Common Motors Co makes use of the Russian doll method for its Ultium battery packs, mounting skinny steel pouch-type cells into onerous steel modules or “cans,” which in flip are inserted into a big pack that’s nestled between the body rails of its new Hummer EV.
For the most recent model of its Mannequin Y, which is scheduled to begin manufacturing quickly in Germany, Tesla Inc has designed a structural pack that does away with modules, bonding the large-format cylindrical battery cells along with structural adhesive and sandwiching them between two steel plates, which in flip are related to the entrance and rear cast-metal buildings of the automobile.
Different firms have give you their very own variations of Tesla’s cell-to-pack idea, utilizing thick steel cells referred to as prismatics moderately than cylindrical cells.
(Reporting by Paul Lienert in Detroit; Enhancing by Matthew Lewis)
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