Date: 02/10/2009

Lithium-ion battery module with high-energy storage solutions from Panasonic

Panasonic has released a new 1.5 kWh battery module from 18650-type (18 mm in diameter x 65 mm in length) lithium-ion battery cells that are widely used in laptop computers, to provide energy storage solutions. The storage systems using lithium-ion batteries offers high capacity, output, reliability and safety, better improved cost performance.

Panasonic's compact and high-energy battery module have a volume of approximately 7 L and weighing 8 kg has a voltage of 25.2 V and a capacity of 58 Ah, and suitable for applications such as home electricity storage and electric vehicles.

The high-energy module is constructed from 140 pieces of 18650-type lithium-ion battery cells - seven serially connected rows with each row made of 20 parallel-connected battery cells. This structure allows for avoiding serious loss in the system performance such as system shutdown even if some individual cells fail.

Panasonic says, on the new battery module, Panasonic holds 38 patents in Japan and 22 in other countries including pending applications.

For example, multiple units can be connected in series and/or parallel to store energy generated by home-use photovoltaic (PV) systems and fuel cells, and power electric vehicles (EV).

For more details visit panasonic.net