Hitachi and Hitachi Vehicle Energy Ltd. is expected to ship the samples of their newly developed lithium-ion battery to automobile manufacturers in Japan and overseas in the spring of 2010. This new product has more energy and output density as compared to others of its genre. Up to now, batteries manufactured from the same manufacturer were less efficient in output. Now, with the development of this new battery the capacity has been increased up to 25 Ah, which is 4-5 times more than the earlier ones. It boasts Energy density of 120 Wh/kg and power density of 2,400 W/kg. To prevent the internal short circuit, a heat-resistant has been incorporated. It provides safety, especially when these batteries are being used in automotive applications.
Further, more emphasis has been laid on increasing the battery strength and the collector structure by including larger space for batteries. The available details reveal that the new battery cell measures 146 x 110 x 30mm, weighs 0.75kg and the positive and negative electrodes contain oxide including a manganese substance and a carbon material respectively. Hitachi achieved success in this breakthrough with the help of Mechanical Engineering Research Laboratory. These PHEV lithium-ion batteries will be displayed at the 1st International Rechargeable Battery Expo, which will be held at Tokyo Big Sight from 3-5 March 2010.
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