锌银电池是航空航天领域的重要能源设备, 利用电池搁置状态的测试数据对电池激活后的搁置状态可靠性评估是迫切需要解决的问题。建立了锌银电池湿搁置状态电压参数基于Wiener过程的退化模型, 给出了电池的可靠度函数, 并对模型中的参数进行最大似然估计。利用电池湿搁置状态下的放电数据, 对该批电池进行可靠性评估, 认为其在可靠度为0. 95的湿搁置状态寿命可以达到51. 95 h。

Silver-zinc battery is an important energy equipment in aviation and aerospace field. It is an urgent problem to use the test data to assess battery reliability after the battery is activated. A degradation model of voltage of the standby silver-zinc battery was established based on Wiener process. The reliability function of the battery was given. The maximum likelihood estimation method was used to estimate the unknown parameters of presented model. By using the discharge data of the standby battery which was activated, the reliability of the batch of the battery was evaluated out, with the conclusion that the standby life of activated battery is 51. 95 hours on the condition that the reliability is 0. 95.