摘要
储能技术在太阳能、风能等可再生能源发电、智能电网/微网建设等方面有着广阔的应用前景。铅酸电池具有价格低、较高电压、性能稳定、宽工作温度范围等优势,占据着固定储能市场的主导地位。但在智能电网、混合动力车的实际应用中,电池必须在不同的充电状态下操作,特别是在高倍率部分荷电模式。在这种操作模式下,硫酸盐沉积物积聚在电极表面,限制了铅酸电池的容量和循环寿命。铅碳电池是由铅酸电池和超级电容器组合形成的新型储能装置,它抑制了放电过程中负极板表面硫酸盐的不均匀分布和充电时较早的析氢现象,具有铅酸电池高能量和超级电容器高功率的优点,在部分荷电态大功率充放电状态具有较高的循环寿命,适合高倍率循环和瞬间脉冲放电等工作状态。本文介绍了铅碳电池的基本概念及原理,并对铅碳电池储能技术的发展历程和现状进行了总结。
Energy storage technologies show broad application prospects in renewable energy systems such as wind and solar energy, and in the construction of smart grid/micro grids. Lead-acid batteries have dominated the market in stationary energy storage due to their advantages of low price, high-unit voltage, stable performance, and a wide operating temperature range. However, lead-acid batteries under hybrid electric veheciles（HEV） and renewable-energy applications must be operated at different state-of-charge windows. In particular, under high-rate partial-state-of-charge（HRPSo C） duty, lead-acid batteries fail prematurely due to the sulfation of the negative plates. Lead carbon ultrabatteies are a new hybrid energy storage device, which combines a lead acid battery and an asymmetric supercapacitor in single unit, with the advantage of both high energy of lead acid battery and high power of supercapacitor. The uneven distribution of lead sulfate across the cross-section of negative plate during discharge and the early evolution of hydrogen during charge should be suppressed. There fore, lead carbon ultrabatteies have longer cycling life in a wider state-of-charge window, which is suitable for high rate cycling and pulse applications. The concept and the basic principles of lead carbon ultrabatteries and its recent developments are summarized.
出处
《储能科学与技术》
CAS
2015年第6期546-555,共10页
Energy Storage Science and Technology
基金
国家重点基础研究发展计划(2011CB935900)
教育部创新团队(IRT13R30)项目
关键词
储能
铅酸电池
铅碳电池
负极材料
energy storage
lead-acid battery
lead carbon ultrabattery
negative active material
