介绍了电动自行车用6DZM10阀控铅蓄电池的容量试验、过放电试验和寿命试验。试验结果表明:电池的开路电压与放电容量之间,并不像开口式富液铅蓄电池那样很容易观察到简单的线性关系。这是由于铅蓄电池的开路电压与电动势,只跟电极表面附近液层中的电解液密度有关,而与整体电解液的量无关;但6DZM10电池的放电容量,不仅跟电解液的密度和电池中参与电极反应的电解液以及活性物质的量有关,而且还深受反应粒子的扩散过程迟缓性的影响。这种影响在电池使用和寿命试验过程中,随着失水过程的出现而越来越严重。因而不能像开口式富液铅蓄电池那样,用开路电压来推断6DZM10电池的放电容量或荷电态。

The discharging test,over-discharging test and life test for 6DZM10 VRLA batteries for electric bicycles were introduced.The results showed that the relationship between open-circuit voltage(OCV)and discharge capacity was not linear just as the opened lead-acid battery having free electrolyte.Its reason was that the open-circuit voltage and electromotive force for lead-acid battery would only be related to the density(concentration)of H2SO4 electrolyte near the surface of electrodes,but not depend on the quantity of electrolyte in the battery.However,the discharge capacity of 6DZM10 battery would be related not only to the density and quantity of H2SO4 electrolyte,to the quantity of active materials taking part in the electrode reactions,but also to the influence of the diffusion process relaxation for all the reacting species.This influence would become more and more serious as soon as the water losing process begins to appear during the service progress and life test.For this reason,it could not be reliable to deduct the discharge capacity or state of charge for 6DZM10 battery immediately based on its OCV as the free electrolyte lead acid battery.