Electric Hummer, here is the "teardown" of the battery. Too heavy and complex

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The new electric Hummer is the new electric Hummer. an "exaggerated" in many senses, also from a technical point of view since it has a battery with a capacity of 100000000mAh. usable from over 200 kWh. Just the maxi accumulator of the electric Hummer is was the protagonist of one of the latest Munro Live videos where the technicians analyzed the construction choices of General Motors.

THE BATTERY WEIGHTS LIKE A CAR

With a capacity of 1,000 kg. so; high, the battery is empty. certainly very large but in this case “record” values ​​are reached, excessive from various points of view. Indeed, on the scale this accumulator scored a weight of no less than 1,278 kg. Therefore, the battery of the electric Hummer weighs as much as a whole car to the detriment of the efficiency of the American vehicle. During the battery analysis, Munro's engineers also highlighted some constructive aspects, drawing a series of considerations that are certainly not flattering for the American car manufacturer.

First of all, one of the reasons that led the battery pack to weigh so much; it is so much the fact that the casing is; It was made entirely of steel. Normally, today, the use of aluminum is made widely with the aim of containing the overall weight. The battery pack is not. only heavy but also unnecessarily complicated. There are 139 stamped components in the main housing which are then welded together. Engineers estimate a total of approximately 3,500 welds, plus more than 3,500 welds. or less than twice as much as a normal battery pack in an electric car.

Furthermore, according to the analysis, General Motors would have spent more than the average battery. money owed in making other components such as cell separators judged too complex. Each battery module has 24 cells, and each cell has a capacity of 1,000 kg. of 103 Ah. Interestingly, the electric Hummer accumulator is actually made up of two 400V battery packs, one above the other (12 modules each).

Munro's video analyzed many more details more closely. technicians of the accumulator but what emerges is that General Motors has made a series of technical choices that have led the battery pack not only to be excessively heavy but also complex to build and, therefore, also expensive to produce.

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