Sanyo to Begin Mass Production of Li-ion Systems for Power Storage and Light Electric Vehicle Applications
|Sanyo Li-ion systems for power storage (left) and light electric vehicle (right) applications. Click to enlarge.|
Sanyo Electric Co., Ltd. has developed two new lithium-ion battery systems and will begin mass production of the new products in March 2010. Initial monthly production for each system will be 500 units.
The Standard Battery System for Electric Motors (EVB-101) can be used to power light electric vehicles that are in the R&D or small-scale mass production stages. The rack-mountable Standard Battery System for Energy Storage (DCB-101) can be easily incorporated into existing systems as part of hybrid schemes using solar cells, to store electricity generated by wind power, or for electrical output stabilization. It can also be used as a back-up power source for servers or mobile phone base stations.
Both systems are based on 18650-size cylindrical lithium-ion batteries (18 mm in diameter x 65 mm in height). Sanyo has developed parallel and series battery control technologies for the basic components of the new products, based on its experience with laptop battery packs. The company has also added more of its own technologies to ensure additional reliability and thermal management.
The voltage and capacity of the products can be customized, as multiple units are connected in parallel and series, according to the application.
|Sanyo Li-ion Systems|
|Standard Battery System for Electric Motors|
|Standard Battery System for Power Storage|
|Format||14 in series, 6 in parallel, 18650-type||13 in series, 24 in parallel, 18650-type|
|Output voltage||50.4 V (42.0 V to 57.4 V)||Average 48V (39V to 52V)|
|Battery capacity||10.8 Ah||33.6Ah|
|Charging voltage (max)||57.4 V (4.1 V / cell)||52V|
|Power generation||544 Wh||1,613 Wh|
|Max. output||5.2 kW (peak) / 1.5 kW (continuous)||Approx. 1.5kW|
|Max. discharge current||120 A (peak) / 35 A (continuous)||30A|
|Size||366 × 213 × 66 mm (approx. 5.2 L)||438 × 386 × 80 mm (approx. 13.5 L)|
|Weight||Approx. 7 kg||Approx. 19 kg|
Panasonic Corp. launched its tender offer for Sanyo Electric Co. on 4 November—which the Sanyo board supported. Three major shareholders—US-based Goldman Sachs Group Inc., the Daiwa Securities SMBC Co. group and Sumitomo Mitsui Banking Corp.—have already agreed to sell a combined 50.13% stake in Sanyo, so the tender offer is effectively a done deal. Sanyo is likely to become a Panasonic unit as early as mid-December.