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Lithium-ion battery profile
application

 

Lithium-ion polymer battery application

 

  • A compelling advantage of Li-poly cells is that manufacturers can shape the battery almost however they please、which can be important to mobile phone manufacturers constantly working on smaller、thinner、and lighter phones. Another advantage of lithium polymer cells over nickel-cadmium and nickel metal hydride cells is that the rate of self-discharge is much lower.

  • Li-poly batteries are also gaining favor in the world of radio-controlled aircraft、where the advantages of both lower weight and greatly increased run times can be sufficient justification for the price. However、lithium polymer-specific chargers are required to avoid fire and explosion. Explosions can also occur if the battery is short-circuited、as tremendous current passes through the cell in an instant. Radio-control enthusiasts take special precautions to ensure their battery leads are properly connected and insulated. Specially designed electronic motor speed controls are used to prevent excessive discharge and subsequent battery damage. This is achieved using a low voltage cutoff (LVC) setting that is adjusted to maintain cell voltage at (typically) 3 V per cell.

  • Li-poly batteries are also gaining ground in PDAs (including iPhone) and laptop computers、such as Apple's MacBook and Lenovo's Thinkpad (Ultrabay Batteries)、Dell (D-bay Batteries) and small digital music devices such as iPods and other MP3 players、as well as portable gaming devices like the Sony PSP or Nintendo's Game Boy Advance SP、where small form factors and energy density outweigh cost considerations.

  • These batteries may also power the next generation of battery electric vehicles. The cost of an electric car of this type is prohibitive、but proponents argue that with increased production、the cost of Li-poly batteries will go down.

  • Canadian company BionX supplied electric bicycle conversion kits that used brushless motors and nickel metal hydride batteries for some years、but in 2006、they introduced batteries that used lithium-ion technology. During 2007 Urban Mover and PowaCycle、both in the United Kingdom、and Schwinn、based in Chicago、IL introduced the first commercially available Li-poly powered electric bikes、as opposed to just supplying conversion kits. Schwinn was the first to utilize the advanced component designs from Protanium.