针对GB/T 3836.4—2021《爆炸性环境 第4部分：本质安全型“i”保护的设备》中关于半导体急剧短路保护原理输出本质安全电源瞬态能量的要求，以典型的矿用“ib”类隔爆兼本安型电源及本安型电池电源为研究对象，明确了瞬态能量测试装置及瞬态能量计算方法；根据实验验证对比，分析了输出本质安全型电源瞬态能量实验失败的原因，验证了过压过流保护电路中保护时间、半导体芯片反应速度及短路瞬间电压、电流值等是影响瞬态能量的关键参数；并结合实际设计对其保护过程进行分析，排除了通过TVS管减小瞬态能量方法，研究了电感在电源过压过流保护电路前后对瞬态能量的影响，为矿用输出本质安全型电源设计提供了参考依据。

In response to the requirements of GB/T 3836.4—2021 Explosive atmosphere Part 4: Equipment with protection by intrinsic safety “i” for outputting transient energy of intrinsically safe power sources based on the principle of semiconductor rapid short circuit protection, taking typical mining “ib” class explosion-proof and intrinsically safe power supplies and intrinsically safe battery power supplies as research objects, the study clarifies the transient energy testing device and transient energy calculation method. According to the experimental verification and comparison, the reasons for the failure of the transient energy experiment of the output intrinsically safe power supply are analyzed, and it is verified that the protection time, the reaction speed of semiconductor chip, the short-circuit instantaneous voltage and current value in the over-voltage and over-current protection circuit are the key parameters affecting the transient energy; based on the actual design, the protection process is analyzed, the method of reducing transient energy by TVS tube is excluded, and the influence of inductor on transient energy before and after the power supply overvoltage and over-current protection circuit is studied, which provides a reference for the design of the output intrinsically safe power supply for mining.