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首页> 外文会议>Lead-acid batteries and capacitors, new designs, and new applications >Partial State-of-Charge Duty: A Challenge but Not a Show-Stopper for Lead-Acid Batteries!
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Partial State-of-Charge Duty: A Challenge but Not a Show-Stopper for Lead-Acid Batteries!

机译：部分充电状态的责任：铅酸电池的挑战，但不是制胜法宝！

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摘要

The mechanism by which conventional lead-acid batteries (both flooded and valve-regulated designs) fail when subjected to high-rate partial-state-of-charge (HRPSoC) operation in hybrid electric vehicles is manifested as poor dynamic charge acceptance at the negative plate. This parameter is defined as the amount of charge that is actually delivered to the battery during regenerative braking phases of a driving cycle, divided by the amount of charge that could have been provided by the generator. The possible reasons for this mode of failure are discussed in terms of the processes that support the charge reaction and the competing secondary reactions that can take place at the plate during charge, namely: oxygen reduction (for valve-regulated designs), hydrogen evolution, and the accumulation of capacitive charge. To reach a full understanding of the processes associated with the unusual duty of HRPSoC operation, it is necessary: (ⅰ) to examine aspects of the charge reaction that, to date, have received little attention, e.g., local reaction within the pores of the plate active-material, effects of acid concentration on the local solubility of lead sulfate, non-uniformity of potential across the plate; (ⅱ) to evaluate the beneficial effects to be gained from the respective use of carbon, modifications of grid design (twin tab), and the UltraBatteryTM concept.
机译：常规铅酸电池（满液式和阀控式设计）在混合动力电动汽车中经受高速率部分充电状态（HRPSoC）操作时失效的机制表现为负极的动态电荷接受能力较差盘子。该参数定义为在行驶周期的再生制动阶段实际传递给电池的电量除以发电机可能提供的电量。通过支持充电反应的过程以及在充电过程中可能在板上发生的竞争性次级反应的过程，讨论了这种失效模式的可能原因，即：氧气还原（用于阀控式设计），放氢，和电容电荷的积累。为了全面了解与HRPSoC异常工作相关的过程，有必要：（ⅰ）检查迄今为止很少受到关注的电荷反应方面，例如，反应孔中的局部反应。极板活性物质，酸浓度对硫酸铅局部溶解度，极板电位不均匀的影响； （ⅱ）评估通过分别使用碳，修改网格设计（双选项卡）和UltraBatteryTM概念可获得的有益效果。

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