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Originally Posted by redpoint5
Regarding the Bolt fires, many people used to be critical of Tesla's use of cylindrical cells because it wastes more materials in packaging and wastes volume due to void space between cells. They argued prismatic and pouch were more efficient and pointed to the fact that most EV manufacturers have adopted these formats. In hindsight, it may have been a wise engineering decision in that it reduces the chance of a single cell defect causing a fire.
I've argued that perhaps a design that requires cells to be defect free might not be safe enough. A single cell having an internal short shouldn't cause ones house to burn down. Perhaps I'm wrong though and cells can be made reliably enough that the risk is low, or it would simply be too many compromises to make an inherently safe battery.
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Round cells don't fix the problem and the fact that you need many more round cells for a battery pack increases the risk of a defective cell. Tesla has it's own share of battery fires as recently as 2020.
The Bolt fires are caused by two different manufacturing defects in the same cell. A torn anode tab and a folded separator.
Quote:
Originally Posted by Hersbird
The hybrid in the Tundra seems pretty mild. More than the Etorque in the Ram but less than what the F150 Hybrid has. I hope they use some kind of reverse power like the F150 has, that built in generator ability is a pretty useful feature on a truck. Otherwise the big news here is Toyota going turbo v6 like Ford and losing the great 5.7 v8 which is a powerful reliable motor.
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The Toyota and Ford hybrids are very similar. Both have a single motor between the engine and transmission. The Toyota's is 48 hp* while the Ford's is 47 hp. The Tundra does not have a generator option which I think is a huge miss.
The twin turbo V6 is expected to be Toyota's replacement for their V8 across all global vehicles. Tundra, Sequoia, Land Cruiser, Lexus - everything on the TNGA-F platform.
*Based on hybrid HP - Standard V6 hp - I haven't seen specs on just the motor yet