摘要
Abstract
Radioisotope Thermoelectric Generator(RTG)is an ideal power source for deep space,deep sea,and other scenarios with extremely low temperature,weak or no light.The performance and lifetime of thermoelectric devices directly determine mission success.Accurate evaluation under simu-lated conditions is fundamental for RTG technology.To address low efficiency,unstable control,and inconvenient maintenance of existing test apparatus,a novel system is developed.It features a split vacuum chamber for three-station parallel testing,a pneumatic preload for precise clamping force,and independently adjustable hot/cold side temperatures achieving a 450℃maximum temperature difference.Experiments show vacuum better than 10-3 Pa,temperature accuracy±1℃,pressure accu-racy±1%F.S.,good multi-zone consistency,and a repeatability coefficient of variation below 2%.Par-allel testing improves efficiency by over 60%compared with conventional single-device testing,and continuous operation(120 h)verifies long-term stability.关键词
放射性同位素电池/温差发电器件/性能测试/测试装置/并行测试Key words
radioisotope thermoelectric generator/thermoelectric device/performance testing/test-ing apparatus/parallel testing分类
信息技术与安全科学
