high-tech dreamliner's wings clipped by battery trouble - li ion battery cell
About a year ago, when the Boeing 787 Dreamliner was put into use, it was considered a miracle of cutting --
CHICAGO-edge innovation
Used lithium based in the United States
Carbon-ion battery
The fiber optic fuselage and fast computer network reduce fuel consumption and provide passengers with an unprecedented ride experience.
But after a series of major electrical accidents-including last week's battery fire on a 787 plane at Boston Logan International Airport-the fleet of 50 aircraft worldwide is now idle.
The National Transportation Safety Board launched an investigation into the aircraft's electrical system.
The FAA announced on 2011 that the plane was worth flying and they are questioning their certification process.
Lithium on the plane
Ion batteries also appear to have taken action, forcing the all-day air 787 airlines to land urgently this week at Komatsu airport in western Japan, storing twice as much power as Nickel
Cd batteries make them lighter.
However, they are known fire risks under certain operating conditions.
No one yet knows whether the battery itself-manufactured by GS Yuasa in Japan and packaged by Thales in France-is faulty, or if there is a problem with the wires or electronics they plug in.
The FAA's concern about the battery dates back to 2007, when it warned Boeing that it could only use lithium-
If the battery charging, management and fault alarm system of the ion battery is able to cope with its unique risks. Li-
The FAA says ion batteries are vulnerable to their own effects.
The constant increase in temperature and pressure, if they are overcharged, "This will result in the formation of highly unstable metallic lithium, which will ignite, resulting in self-generation
Fire or explosion.
As the Boston battery fire is under investigation by NTSB, Boeing spokesman Lori Gunt is not yet able to comment on what happened.
But she said the 787 was built to deal with any problems the battery was thrown on.
"It's designed to handle any faults we expect from the battery," she told New Scientist . ".
Boeing's rival, Airbus of Toulouse, France, uses smaller lithium batteries on A380 aircraft to power emergency lighting, but plans to increase the pair on the upcoming a350 aircraft“Lithium-
"Ion batteries can be designed in a very different way with different chemical composition, electronic protection, capacity and number of batteries," an Airbus spokesman said . ".
"The way the battery is integrated on the plane is important, and the protection measures in place are also important. ”Smart in-
The battery sensor could be an answer, Gi said.
Kim Heon and his colleagues at the Golden National Renewable Energy Center in Colorado.
They are developing a failure. safe” Li-
Ion battery integrated with passive warning system (
Power magazine, DOI & colon; 10. 1016/j. jpowsour. 2012. 03. 015)
Detecting structural defects in Li-
Ion batteries that can cause heat to get out of control that can cause a fire.
When it does this, it will isolate the battery from the battery long before the failure occurs.
Better yet, Kim says, "This technology is independent of battery chemistry and battery design"-so it can be applied to Li-
Ion batteries for mobile phones, electric cars and aviation.
The results of the battery survey will also resonate with people.
As the International Space Station is about to upgrade its power supply to a more powerful Li-
Ion cells from GS Yuasa.
"NASA is in close communication with Boeing, FAA and battery manufacturers about the ongoing fault analysis and will learn any relevant lessons as appropriate," a NASA spokesperson told the New Scientist . ".