共查询到20条相似文献,搜索用时 640 毫秒
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总结了利用慢脉冲快速充电方法,采用计算机自动控制、记录存盘,以蓄电池不同DoD循环寿命进行的试验,分析了蓄电池不同DoD循环寿命的影响。大量的试验证实,慢脉冲快速充电方法不仅能在不损坏电池的前提下,加速蓄电池循环寿命试验,而且使铅酸蓄电池真正实现快速充电,使用寿命延长。 相似文献
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铅酸蓄电池慢脉冲快速充电研究的突破 总被引:2,自引:1,他引:1
总结了多年来铅酸蓄电池与快速充电研究的结果,发现蓄电池的性能除了与本身的品质有直接的关系外,还与蓄电池的充电方式有紧密的联系。在慢脉冲快速充电的条件下,铅酸蓄电池的许多性能发生了很大的变化,许多长期以来形成的对铅酸蓄电池的观念将发生根本性的改变:大电流快速充电对铅酸蓄电池是有利的,大电流充电使铅酸蓄电池的发热量少、温升低、析气量少,同样有较长的循环寿命,而且还能够实现快速充电。 相似文献
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脉冲充电对铅酸蓄电池硫酸盐化的影响 总被引:5,自引:0,他引:5
设计了一种消除铅酸蓄电池硫酸盐化故障的脉冲充电实验方法 ,其脉冲电流的大小和周期介于正常电池的脉冲充电法和传统的消除硫酸盐化的反复充放电法之间 ,并用该法与传统方法进行对照实验。实验结果表明 ,脉冲充电法充入的电量仅为传统方法的 42 % ,但各个单体电池的电解液密度上升幅度平均为传统方法的 83 %。证明了脉冲充电法比传统方法能更有效地消除硫酸盐化 ,并由此推断出用脉冲充电法对正常电池进行恢复性充电 ,能起到防止硫酸盐化的作用 ,并延长铅酸蓄电池的循环寿命 相似文献
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论述了快速和善充对光伏充电器的重要性,分析了铅酸蓄电池充放电过程的化学反应机理以及光伏电池的输出特性,提出了一种由单片机控制并始终处于脉冲式充电方式下的光伏智能控制系统,其能在晴朗的白天充分利用阳光,从而实现快速充电;也能有效避免蓄电池的极化和硫化,从而延长蓄电池使用寿命,减小更换蓄电池的成本。仿真和实验结果表明,该充电系统可智能地实现光伏快充和善充。 相似文献
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设计一款铅蓄电池快速充电系统。传统充电技术有着效率低、高功耗、高损害等致命缺点,铅酸蓄电池在应用工程中,对充电技术提出了更高的要求。利用MSP430作为主控制器,采用马斯三定律及马斯的脉冲充放电思想设计,通过外围检测电路对蓄电池实时监测,进而实时调整充电状态以实现充电智能化,弥补了传统充电器不足,大大提高充电效率。与传统铅蓄电池充电器相比较,具有充电速度快、效率高、对电池损害低、可视化、可人机交互、高可控及兼具远程在线管理控制的特点。 相似文献
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慢脉冲快速充电延长铅酸蓄电池寿命的研究 总被引:7,自引:2,他引:5
研究了充电方式对铅酸蓄电池寿命的影响.采用慢脉冲快速充电方法不仅可实现高效快速充电,同时可以减少析气,消除硫酸盐化,进行均衡充电,从而延长了铅酸蓄电池的使用寿命. 相似文献
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蓄电池脉冲充放电的微机控制 总被引:3,自引:0,他引:3
采用单片机控制的铅酸蓄电池快速充电监控系统,对蓄电池进行脉冲充放电,通过检测蓄电池的端电压、充电电流和表面温升,实现了对蓄电池充电过程中极化状态与终止状态的判别.从而完成了对蓄电池快速充电的智能化控制。 相似文献
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Recently, several new techniques such as LIPP, PIPS, PEA and TP methods have been developed to measure directly the space charge distributions in insulating polymers. Many papers have been published on space charge in insulating materials. In this paper, the space charge measurement techniques and space charge in polyethylene are reviewed. The space charge distributions in polyethylene depend strongly upon additives (antioxidants, antistatic agents, etc.), oxidation products, byproducts from the crosslinking reaction (acetophenone, etc.). Some of them enhance electron (or hole) injection from the electrode and, as a result, homo space charge is formed. Ionic carriers are supplied from some impurities to form hetero space charge. Space charge distributions are also sensitive to the electrode material and the interface between different materials. From the space charge behavior observed, the space charge effects on the high-field conduction and breakdown phenomena have been discussed quantitatively and some of the high-field phenomena in polyethylene have been elucidated 相似文献
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《Engineering & Technology》2009,4(6):52-55
Compressed air energy storage (CAES) is not a well-known technology, yet it has been around for years and, as Sian Crampsie discovers, is enjoying something of a revival. 相似文献
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Space charge formation and its increase with field under DC conditions is not a mystical phenomenon. The increase in space charge with applied field is an obvious and inevitable result of the interaction of field-dependent current density with spatially inhomogeneous resistivity. For common polymeric dielectrics, the current density makes a transition from a linear function of field to an exponential function of field at around 10 kV/mm. This causes a similar transition in the sample space charge in the same field region. However, this transition has no obvious connection with aging, and if it does prove to have a connection, the driving force is the rapidly increasing current density and not the space charge, which is a result thereof. As to the issue of the accuracy of space charge measurements, it may be more important to focus on providing a physical mechanism for 1-eV deep traps at an average separation of 3 nm within a polymeric dielectric. This would bring about the ability to engineer important dielectric properties as well as improved understanding of the physical basis of aging and other important phenomena in dielectrics. 相似文献
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The pulsed electroacoustic (PEA) method already has been used widely to measure the space charge distribution in the pulsed electric field direction of sheet specimens. We have developed a new PEA measurement system which can observe the space charge distribution in three dimensions. Since the PEA system is not damaged if the specimen breaks down, the new PEA system can measure the space charge distribution of dielectric materials safely and nondestructively within a short time 相似文献