Sony has developed an energy storage module using lithium-ion rechargeable batteries made with olivine-type lithium iron phosphate as the cathode material. Key features of olivine-type lithium iron phosphate cell include high power output, long-life performance and excellent thermal stability. Sample shipments of the new module are scheduled to begin from June, 2010.
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| The new Sony Li-ion 1.2 kWh module. Click to enlarge. |
The newly-developed module offers 1.2 kWh capacity. Multiple modules can be connected either in series or in parallel to expand to a higher voltage or capacity.
Each module is compatible with a high power output maximum of up to 2.5 kW, and can be used for various stationary power supplies such as UPS (uninterruptible power supply) for data servers or as a backup power supply for mobile phone wireless base stations.
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Internal battery usage can be controlled safely by monitoring the state (voltage, current, temperature) of the internal batteries and communicating this to a linked external battery management system.
Sony estimates a 10-year useful life for the module with one charge-discharge cycle per day.
This energy storage module will be on display at the China International Battery Fair 2010 (held from 24-26 June 2010) in Shenzhen.