li-ion – Tech Today w/ Ken May

Yesterday Texas Instruments introduced a couple of new chipsets (fuel gauge an charger ICs) designed to improve the charging speed and life expectancy of single-cell Li-ion batteries. The technology, called MaxLife, is expected to provide an improvement of up to 30 percent in battery service life and faster charging times . Cell impedance is carefully monitored by the fuel gauge chip while the charger IC uses a model of battery degradation to charge the cell in the most optimal way. Both chips are connected via an I2C bus to form an autonomous battery management system which, according to the company, is safer and more thermally efficient than existing solutions. The two chipsets (2.5A and 4.5A) are now available along with a development kit, so it’s only a matter of time until this technology lands into handsets and other devices that use single-cell Li-ion batteries. Check out the details after the break. Filed under: Cellphones , Misc , Mobile Comments

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Texas Instruments brings fast charging, extended life to Li-ion batteries

There’s no shortage of attempts to build a better battery , usually with a few caveats. USC may have ticked all the right checkboxes with its latest discovery, however. Its use of porous, flexible silicon nanowires for the anodes in a lithium-ion battery delivers the high capacity, fast recharging and low costs that come with silicon, but without the fragility of earlier attempts relying on simpler silicon plates. In practice, the battery could deliver the best of all worlds. Triple the capacity of today’s batteries? Full recharges in 10 minutes? More than 2,000 charging cycles? Check. It all sounds a bit fantastical, but USC does see real-world use on the horizon. Researchers estimate that there should be products with silicon-equipped lithium-ion packs inside of two to three years, which isn’t long to wait if the invention saves us from constantly hunting for the nearest wall outlet. Filed under: Science Comments Via: Gizmodo Source: USC

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USC battery wields silicon nanowires to hold triple the energy, charge in 10 minutes