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首页> 外文期刊>Journal of power sources >Advanced valve-regulated lead-acid batteries for hybrid vehicle applications
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Advanced valve-regulated lead-acid batteries for hybrid vehicle applications

机译：先进的阀控铅酸电池，用于混合动力汽车应用

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摘要

Future vehicle applications require the development of reliable and long life batteries operating under high-rate partial-state-of-charge (HRPSoC) working conditions. Work presented in this paper deals with the study of different design parameters, manufacturing process and charging conditions of spiral wound valve-regulated lead-acid (VRLA) batteries, in order to improve their reliability and cycle life for hybrid vehicle applications. Test results show that both electrolyte saturation and charge conditions have a strong effect on cycle life at HRPSoC performance, presumably because water loss finally accelerates battery failure, which is linked to irreversible sulphation in the upper part of the negative electrodes. By adding expanded graphite to the negative active mass formulation, increasing the electrolyte saturation degree ( >95%) and controlling overcharge during regenerative braking periods (voltage limitation and occasional boosting) it is possible to achieve up to 220,000 cycles at 2.5% DOD, equivalent to 5500 capacity throughput. These results could make lead acid batteries a strong competitor for HEV applications versus other advanced systems such as Ni-MH or Li-ion batteries.
机译：未来的汽车应用需要开发在高速率部分充电状态（HRPSoC）工作条件下运行的可靠且长寿命的电池。本文提出的工作涉及对螺旋缠绕式阀控铅酸（VRLA）电池的不同设计参数，制造工艺和充电条件的研究，以提高其在混合动力汽车应用中的可靠性和循环寿命。测试结果表明，电解质饱和和充电条件都对HRPSoC性能的循环寿命有很大影响，大概是因为水分流失最终会加速电池故障，这与负极上部不可逆的硫酸化有关。通过将膨胀石墨添加到负极活性物质配方中，提高电解质饱和度（> 95％）并在再生制动期间（电压限制和偶尔的加速）控制过充电，在2.5％DOD下，等效条件下可达到220,000次循环达到5500容量的吞吐量。这些结果可能使铅酸电池成为相对于其他先进系统（例如镍氢或锂离子电池）的HEV应用的强大竞争对手。

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