NEC Energy Devices has announced that it has prototyped a lithium-ion secondary battery for commercial drones and plans to launch its products. According to reports, compared with the use of lithium polymer secondary batteries commonly used in drones, the use of newly developed batteries can make the number of flights more than twice the former.
NEC has newly developed a positive electrode material with a larger power capacity per unit weight, and the weight energy density at high power output is about 33% higher than that of the company's original products. In this way, compared with the original products of the company, the flight time and flight distance of the drone can be extended by about 33% under the same weight; at the same energy value, the battery can be reduced by about 25%. At the same time, the electrode resistance is reduced by optimizing the electrode composition, and the energy power density (the energy that can be output per unit weight) is increased by 40% compared with the original product. With this, the drooping of the output current can be improved when the drone rises rapidly and rapidly drops, achieving a long-term stable flight that can reduce the influence of the wind, and a low temperature of about -10 ° C without heating the battery. Flying under the environment.
In addition, the newly developed battery is also improved in durability at the time of repeated charge and discharge by 10% or more by optimizing the combination of an electrode material, an electrolyte solution, an additive, and the like. This durability is equivalent to twice the level of a conventional lithium polymer secondary battery, which contributes to prolonging the battery life, thereby reducing the application cost, and the battery uses high temperature resistance in the insulating separator of the positive and negative electrodes. Strong products ensure safety.
In the future, the company will conduct trial and error in the actual natural environment to promote the realization of mass production. The product is scheduled to begin sales in the first quarter of 2017 with the goal of achieving sales of 2 billion yen in 2018.
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