quote: “As the size of the cell increases, the chance of something happening increases because you have an increased amount of material being exposed” says Dr. K.M. Abraham. “[Lithium-ion batteries] are not as forgiving as far as design and construction are concerned. If you have quality control issues, it can be very bad.”Dr. Abraham is a battery consultant and professor at Northeastern University in Boston and has been researching lithium-ion batteries since 1976.
quote: There is still an option for overcharging a single cell within one of the batteries even if the battery never hit peak charge.
quote: However, Li-ion batteries should have on-board electronics to control and measure the charging of each individual cell, to prevent just what you describe.
quote: i heard on a news site that japanese investigators say that the batteries are absolutely OK, but that the fault likely lies in somewhere else in the electrical system, possibly voltage regulation.
quote: Hydrogen itself burns colorless, last about a second, and the flames goes straight up.
quote: Lithium batteries are inherently unsafe
quote: However the statement from Boeing saying that they designed them not to fail, so there isn't a reason to design safe insulation between the packs is ludicrous.
quote: Elon Musk …….paid for by the taxpayers.
quote: "I design a cell to not fail and then assume it will and then ask the next 'what-if' questions," said Sinnett. "And then I design the batteries that if there is a failure of one cell it won't propagate to another. And then I assume that I am wrong and that it will propagate to another and then I design the enclosure and the redundancy of the equipment to assume that all the cells are involved and the airplane needs to be able to play through that."
quote: Do have to give them props for that! Despite the failures, the aircraft made it to safety just fine, and the fire didn't seem to spread throughout the whole craft. That containment of the battery fires is indeed excellent engineering.
quote: The airlines said they reported the incidents' to Boeing, but Boeing felt they didn't need to alert safety regulators because it was not considered a safety issue, but rather "within the scope of regular maintenance" carried out by airline crews.
quote: "I design a cell to not fail and then assume it will and then ask the next 'what-if' questions," said Sinnett.