王大为,罗悦齐

• 1:上海交通大学
• 2:上海汽车集团前瞻技术研究部

摘要(Abstract)：

本文从汽车工程师和高校科研人员的角度,首先回顾了纯电动汽车的历史,并指出电池是纯电动汽车需要解决的核心问题。其次,本文从电池能量密度、电池材料、汽车生命周期分析、充电技术、换电模式、电池管理系统、安全性和政策等方面,概述了纯电动汽车面临的问题。鉴于锂离子电池的能量密度正接近其理论上限,所以应研发其他类型的电池。从汽车生命周期分析的角度,纯电动汽车节能减排的能力尚存在一定争议。然而,随着清洁发电能源的比例逐渐增加,纯电动汽车具有更大的节能减排潜力。考虑到电池安全性、容量衰减等问题,"快充"速度不能无限制地提高。纯电动汽车充电也会增加电网负荷。充电模式应该和换电模式相辅相成,以便更好地满足纯电动汽车的需求。电池管理系统在已发生的事故中作用不足,纯电动汽车的安全性仍有待提高。随着政策补贴的下降,及政策对电池能量密度的要求,纯电动汽车将面临更严峻的竞争压力。

关键词(KeyWords)： 纯电动汽车;锂离子电池;能量密度;电池管理

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 王大为,罗悦齐

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