Boeing’s 787 Battery Problem – One More Еxample about the Importance of The Batteries in Our Daily Lives

dreamliner-787

Dr. Maximilian Fichtner is experimenting with new chemical compounds to develop the battery of the future.

How much energy can the battery store and then supply is the question of chemistry. He wants to develop a battery that can store a lot more energy than any battery is able to store until now.

How long the charge lasts depends on the electro chemical makeup. The limits of conventional lithium technology have already been reached.  Now researchers are looking for new material’s, like metal and metal fluoride compounds, with long term performances.  The special thing about this cells is that they contain new compounds that promise 4 time higher capacity. Lanthanum fluoride battery has better capacity than the lithium battery.

dreamliner3Smaller, lighter, fluoride technology makes new kinds of batteries. These batteries will store up to six times more energy than before.

What have all electronic devices in common? They all need energy to satisfy our requirements.

The better the batteries become, the easier will be our functioning and mobility.

The technology is constantly working on it to create new and better devices for the human population. So the scientists are also concentrated on the part: batteries as fundamental power part in our daily routines.

Lithium ion is still the leading battery model, when we talk about durability.

Most attention in recent times is paid to batteries for smartphones, cars and planes.

The battery overheat is the main problem. The scientist’s and the producers are working on it to find a good solution, especially after the overheating of the Boeings 787 battery in January this year.

The engineer and manager Elon Musk discovers among the other things, also this issue. He mentioned the problem with the battery overheating and the fire risk as a big problem for the people and the companies, which produce batteries. He means that reducing of the battery cells, the bigger fissures and the good installation can lead to a good solution for the overheating.

The new battery must be stronger and must have departures between the cells.

Boeing 787 is the first airplane, which has begun using lithium ion batteries. They recharge faster and can hold the energy longer than other types of batteries.

The battery is the fundamental problem for the accident landing of the Dreamliner in Japan in January 2013. The current investigations have shown that the main problem was the battery wiring.

The Dreamliner was powered by 8 individual cells, of about 4 Volts each.

dreamliner-interiorThe main battery is used as security battery. It provides power, when all other power sources fall. According to The National Transportation Safety Board explores the causes of the problem with the Boeings 787 battery, concentrating on the assumptions: fire, uncontrolled chemical reaction or thermal runaway and short circuiting

They believe that the initiation of the problem was exactly the unexpectedly dropping of the battery voltage. The area of the thermal damage was the cell 6.
The cells on the left side of the battery, from 5-8 significated mechanical and thermal damages.

The microscopic examinations have shown that the voltage of the battery had unexpectedly dropped from a full charge of 32 Volts, to 28 Volts.

The defect was initiated in cell No. 6. The short circuiting in these cell resulted with thermal runaway, which cascaded to the other cells in the battery.

That resulted with fire!

Mark Rosenker, aviation safety analyst mentions in a video for CBC News that the battery of Boeing has three levels of security.

Dreamliner-interior1The battery is being designed so that it should not overheat and prevent potential short-circuiting

If it does, the cells should not enable to the fire to spread.

The third security level is the security box.

These batteries are made so to be supposed to operate without incident 10 million flight hours!
Complete Boeing’s testing and battery testing are underway worldwide: especially the design, manufacturing and assembling.

The decision must be made in the real time and based on reliable researches.

Until it is confirmed that safety standards are met, Boeing will not be returned to fly.

The research, rigorous testing, fixing the problem, and finding safe solution is expected to finish in April this year, when Boeing would be returned to flight.

The decision for the Dreamliner  787 to fly will be made by the Federal Aviation Administration (FAA).

ANA has canceled all flights to May 31.