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The back-up plan is in case regulators find issues with lithium batteries after the 787 troubles

In the wake of Boeing's 787 Dreamliner issues, Airbus said it's prepared to redesign or utilize alternatives to its A350 lithium-ion jet batteries.

Airbus expects to use lithium-ion batteries much like those used in the 787 Dreamliner, but with recent battery fires occurring in the 787 jets, Airbus is ready to make any necessary changes that authorities may require.

Airbus has addressed that fires could be a potential threat when using lithium-ion batteries, but feels safe with its designs enough to continue with efforts to use them.

"We identified this fragility at the start of development and we think we resolved it about a year ago," said Fabrice Bregier, Airbus CEO. "Nothing prevents us from going back to a classical plan that we have been studying in parallel.


"We have a robust design. If this design has to evolve, we have the time to do that. If it has to change in a more drastic way because the authorities reach the conclusion that the technology is not mature, then we have all the time we need to do this on the A350 before first delivery in the second half of 2014."

The 787's lack of fire-fighting system has been the subject of inspection over the last week, but Airbus declined to offer any details regarding the A350's fire-fighting system or on the battery's design overall.

Throughout January 2013, 787 Dreamliner jets through Japanese airlines All Nippon Airways (ANA) and Japan Airlines (JAL) had various issues concerning the lithium-ion batteries. The 787s were grounded in the U.S., Japan and India while an investigation began.

Source: Reuters



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RE: solution?
By Samus on 2/2/2013 2:12:03 AM , Rating: 2
Voltage stability is easily resolved with a supercap (although I doubt THEY are FAA approved) but your right the real issue is voltage drop. The battery in the 787 is subject to massive power draw on takeoff, this might not be met with LifePO.


RE: solution?
By heffeque on 2/3/2013 4:26:37 PM , Rating: 2
Why the f*ck does the 787 need a massive power draw on takeoff? Why do others not need it? Confused here.


RE: solution?
By m51 on 2/4/2013 10:19:09 AM , Rating: 2
A supercap is not suitable in this application due to the duration of the peak loads.

It's also not necessary with LiFePO since the power density is much higher than most other Li chemistries. LiFePO has a lower energy density but it excels at high power drains.

Battery capacity can still be monitored with the flatter voltage curve, it's not as simplistic as a simple voltage measurement but it's not a problem with a proper design.


RE: solution?
By zephyrprime on 2/5/2013 1:20:09 PM , Rating: 2
LiPo and LiFePo have much better high power capability than Liion at the expense of capacity. This is why they are used in power tools and electric cars like the volt rather than cheaper, longer running liion.


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