热电池可靠性验证方案探讨

探讨了热电池可靠性验证方案。热电池用户可用积累数据进行评估 ,每年或两三年或累计总电池数超过 5 0 0只按文中公式 (1)计算得出此热电池的可靠度 ,其中对轻、重缺陷根据经验可分别采用 0 .2和 0 .6的权重计算。承制单位可用每年批抽样检验数据累计评估 ,具体方法可参考 3 76《火工品可靠性评估方法》选择热电池的激活时间和工作时间两项参数进行评估计算。专项组织可靠性验证试验 :子样可确定为 75只 ,选定激活时间和工作时间两项进行计算得出该热电池的可靠度确定值 ;设计定型后生产技术状态稳定的可以按文中 15式计算 ;热电池的可靠性在鉴定试验时可以按文中 (11)式进行计算 ,即高温、低温和常温三种状态分别计算 ,一种状态不合格 ,则确定该热电池可靠性不合格

Discussion of reliability verification plan for thermal battery

The reliability verification plan for thermal battery was discussed. User can evaluate the reliability of thermal battery by analyzing the accumulating data. Every year, or every 2 or 3 years, or when the total accumulated battery number is more than 500, user can calculate the reliability of the thermal battery by formula (1) and calculate its light and heavy defects by adopting the weight of 0.2 and 0.6 respectively. Manufacturer can evaluate the reliability by analyzing the accumulated data of annual sampling data and calculating the activation and the operating time of the thermal battery in accordance with the standard GJB 376. The evaluation method of the reliability of engineering product of fire. The specially organized reliability verification experiment is mentioned as follow: define the subsample number as 75, select the activation time and operating time to calculate the exact value of reliability of the thermal battery; calculate the reliability of the thermal battery with stable manufacturing and technical status by formula (15); calculate the reliability of the thermal battery by formula (11) in qualification experiment, that is, calculate the data of thermal battery operated at high, low and ambient temperature respectively and determine it is unqualified if it works unqualified under one of the three conditions.