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Verifications of the Battery Adaptation in the Market and Estimation of Battery Life for EV, HEV

机译:验证市场上的电池适应性并评估EV,HEV的电池寿命

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As part of our comprehensive efforts at Nissan to meet zero-emission vehicle (ZEV) standards andrnpromote conservation of energy resources, we put the Prairie EV on the market in 1997, the Altra EVrnin 1998, the Hypermini in 1999 and the Tino HEV (Hybrid Electric Vehicle) in 2000. These vehiclesrnhave been the first in the world to be fitted with advanced lithium-ion batteries.rnIn putting these lithium-ion batteries on the market, it was necessary to make sure that they werernactually suitable to real-world use. It was confirmed that the lithium-ion batteries possess outstandingrnenergy density, power density and charging/discharging efficiency, compared with other types ofrnbatteries, thereby verifying their suitability for EV and HEV application. Another important factor inrnevaluating suitability for real-world use is service life. As part of the work done to confirm that thernservice life of the lithium-ion batteries would meet market requirements, a method was developed forrnestimating battery deterioration based on battery load conditions and the results of cell durabilityrntests.rnThis paper describes the method for estimating the rate of deterioration shown by lithium-ion batteriesrnunder real-world conditions and presents validity of this method.
机译:作为日产汽车为达到零排放汽车(ZEV)标准并促进节约能源所做的全面努力的一部分,我们于1997年将Prairie EV投放市场,在1998年将Altra EVrn投放市场,在1999年将Hypermini投放市场,并且将Tino HEV(混合动力)投放市场。电动汽车(2000年)。这些汽车已成为世界上第一个配备高级锂离子电池的汽车。在将这些锂离子电池投放市场时,有必要确保它们实际上适合于现实世界的使用。 。已经证实,与其他类型的电池相比,锂离子电池具有出色的能量密度,功率密度和充电/放电效率,从而验证了它们对于EV和HEV应用的适用性。不能评估对实际使用的适用性的另一个重要因素是使用寿命。为了确定锂离子电池的使用寿命能够满足市场需求而进行的工作的一部分,根据电池负载条件和电池耐久性测试结果,开发了一种评估电池老化的方法。本文介绍了一种估算速率的方法。实际条件下锂离子电池劣化的表现,并证明了该方法的有效性。

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