Supercapacitors to improve mobile battery efficiency

 

Prototypes absorb and reuse wasted energy.

Researchers in New Zealand are developing supercapacitors that absorb and reuse wasted energy from mobile phone and laptop batteries.

The technology could extend the battery life of mobile devices by boosting the efficiency of their traditional power supplies.

Supercapacitors are very dense capacitors that are capable of storing and discharging large amounts electrical energy very rapidly.

They are often based around activated charcoal or other highly porous materials, and are commercially used as energy storage devices in electric vehicles, or memory backups for IT equipment.

Currently, mobile devices use either switch mode systems or linear power supplies, which deliver high quality power but at low efficiency, electrical engineer Nihal Kularatna explains.

But with modern electrical equipment operating at ever-lower voltages, which switch mode power supplies don't handle very well, Kularatna expects linear systems to find many applications if their efficiency is improved.

"We are using supercapacitors to improve the efficiency of linear power supplies," said Kularatna, of the Waikato University.

The university has filed patents for two working prototypes that use a supercapacitor to improve battery efficiency.

The researchers report having almost doubled the efficiency of a low dropout regulator circuit from 42 percent to 80 percent by using the supercapacitor concept.


Supercapacitors to improve mobile battery efficiency
 
 
 
Top Stories
Matching databases to Linux distros
Reviewed: OS-repository DBMSs, MariaDB vs MySQL.
 
Coalition's NBN cost-benefit study finds in favour of MTM
FTTP costs too much, would take too long.
 
Who'd have picked a BlackBerry for the Internet of Things?
[Blog] BlackBerry has a more secure future in the physical world.
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest articles on BIT Latest Articles from BIT
Looking for storage? Seagate has five new small business NAS devices
Aug 22, 2014
Seagate has announced a new portfolio of Networked Attached Storage (NAS) solutions specifically ...
Run a small business in western Sydney?
Aug 15, 2014
This event might be of interest if you're looking to meet other people with a similar interest ...
Buying a tablet? Microsoft's Surface Pro 3 goes on sale this month
Aug 8, 2014
Microsoft has announced its Surface Pro 3 will go on sale in Australia on 28 August from ...
Apple's top MacBook Pro with Retina is now cheaper
Aug 1, 2014
Apple has updated its MacBook Pro range with faster processors and new pricing, including ...
Pass on carbon tax savings, warns ACCC
Jul 24, 2014
The ACCC is warning businesses that supply "regulated goods" to pass on any cost savings ...
Latest Comments
Polls
Which is the most prevalent cyber attack method your organisation faces?




   |   View results
Phishing and social engineering
  71%
 
Advanced persistent threats
  3%
 
Unpatched or unsupported software vulnerabilities
  11%
 
Denial of service attacks
  6%
 
Insider threats
  10%
TOTAL VOTES: 762

Vote