本文選題：鋰離子動力電池組 + 電池內(nèi)阻�。� 參考：《電源技術》2016年06期

【摘要】：電流、溫度大小會影響電動汽車鋰離子動力電池組放電的效率及電池組一致性,其本質是電池內(nèi)阻本身固有特性所致。通過研究鋰離子動力電池組在不同溫度、不同放電電流下的內(nèi)阻變化,建立電池內(nèi)阻變化圖譜,分析不同溫度、電流對電池輸出能量的影響。根據(jù)電池內(nèi)阻特性,結合整車動力性及經(jīng)濟性,將電動汽車放電策略分為可供選擇的三種模式:動力模式、經(jīng)濟模式及限制模式。通過電動汽車續(xù)駛里程及放電能量的對比測試,比較所提出的各種模式的優(yōu)缺點。實驗證明,根據(jù)不同路況及使用需求,采用不同的放電模式,可以保證整車動力性,延長電池壽命,提高整車續(xù)駛里程。
[Abstract]:The current and temperature will affect the discharge efficiency and the uniformity of the battery pack, which is caused by the inherent characteristics of the internal resistance of the battery.By studying the change of internal resistance of lithium ion power battery at different temperature and different discharge current, the variation diagram of battery internal resistance was established, and the influence of different temperature and current on the output energy of the battery was analyzed.According to the characteristics of battery internal resistance, combined with the power and economy of the whole vehicle, the electric vehicle discharge strategy can be divided into three modes: power mode, economic mode and limiting mode.The advantages and disadvantages of the proposed modes are compared by comparing the driving range and the discharge energy of the electric vehicle.The experimental results show that according to different road conditions and application requirements, different discharge modes can guarantee the power performance of the whole vehicle, prolong the battery life and increase the driving mileage of the whole vehicle.
【作者單位】： 廣東技術師范學院汽車學院;
【基金】：廣東省教育廳青年創(chuàng)新人才培育項目(基于內(nèi)阻特性的電動汽車鋰離子電池組一致性評價及充放電策略研究) 廣東省自然科學基金(8151063301000004) 廣東省科技廳重大專項(2015B010135006)
【分類號】：U469.72
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本文編號：1769897