为提高CTCS3-300T车载设备系统可用性,保障高铁动车组安全高效运行,进行CTCS3-300T车载设备应答器传输模块(Balise Transmission Module,BTM)单元热备冗余研究。通过对既有CTCS3-300T车载设备系统架构、硬件基础和软件基础进行研究,提出...为提高CTCS3-300T车载设备系统可用性,保障高铁动车组安全高效运行,进行CTCS3-300T车载设备应答器传输模块(Balise Transmission Module,BTM)单元热备冗余研究。通过对既有CTCS3-300T车载设备系统架构、硬件基础和软件基础进行研究,提出CTCS3-300T车载设备BTM单元热备冗余方案。通过优化BTM单元、C3等级核心控车单元(ATP Control Unit,ATPCU)和C2等级核心控车单元(C2 Control Unit,C2CU),实现BTM热备功能下的BTM自检、BTM天线控制、BTM报文使用和BTM故障处理等功能处理。并进行双BTM同时工作及主机软件和BTM软件变更的风险分析,完成BTM单元热备冗余功能测试验证,论证BTM单元热备冗余方案有效可用。展开更多
To improve the thermal performance and temperature uniformity of battery pack,this paper presents a novel battery thermal management system(BTMS)that integrates oscillating heat pipe(OHP)technology with liquid cooling...To improve the thermal performance and temperature uniformity of battery pack,this paper presents a novel battery thermal management system(BTMS)that integrates oscillating heat pipe(OHP)technology with liquid cooling.The primary innovation of the new hybrid BTMS lies in the use of an OHP with vertically arranged evaporator and condenser,enabling dual heat transfer pathways through liquid cooling plate and OHP.This study experimentally investigates the performance characteristics of the⊥-shaped OHP and hybrid BTMS.Results show that lower filling ratios significantly enhance the OHP’s startup performance but reduce operational stability,with optimal performance achieved at a 26.1%filling ratio.Acetone,as a single working fluid,exhibited superior heat transfer performance under low-load conditions compared to mixed fluids,while the acetone/ethanol mixture,forming a non-azeotropic solution,minimized temperature fluctuations.At 100 W,the⊥-shaped OHP with a horizontally arranged evaporator demonstrated better heat transfer performance than 2D-OHP designs.Compared to a liquid BTMS using water coolant at 280 W,the hybrid BTMS reduced the equivalent thermal resistance(RBTMS)and maximum temperature difference(ΔTmax)by 8.06%and 19.1%,respectively.When graphene nanofluid was used as the coolant in hybrid BTMS,the battery pack’s average temperature(Tb)dropped from 52.2℃ to 47.9℃,with RBTMS andΔTmax decreasing by 20.1%and 32.7%,respectively.These findings underscore the hybrid BTMS’s suitability for high heat load applications,offering a promising solution for electric vehicle thermal management.展开更多
文摘为提高CTCS3-300T车载设备系统可用性,保障高铁动车组安全高效运行,进行CTCS3-300T车载设备应答器传输模块(Balise Transmission Module,BTM)单元热备冗余研究。通过对既有CTCS3-300T车载设备系统架构、硬件基础和软件基础进行研究,提出CTCS3-300T车载设备BTM单元热备冗余方案。通过优化BTM单元、C3等级核心控车单元(ATP Control Unit,ATPCU)和C2等级核心控车单元(C2 Control Unit,C2CU),实现BTM热备功能下的BTM自检、BTM天线控制、BTM报文使用和BTM故障处理等功能处理。并进行双BTM同时工作及主机软件和BTM软件变更的风险分析,完成BTM单元热备冗余功能测试验证,论证BTM单元热备冗余方案有效可用。
基金funded by the Science and Technology Research Project of Jiangxi Provincial Department of Education(GJJ2404911)the Ministry of Higher Education,Malaysia through the Fundamental Research Grant Scheme:FRGS/1/2024/TK10/UMP/02/15 and Universiti Malaysia Pahang Al-Sultan Abdullah(RDU240117).
文摘To improve the thermal performance and temperature uniformity of battery pack,this paper presents a novel battery thermal management system(BTMS)that integrates oscillating heat pipe(OHP)technology with liquid cooling.The primary innovation of the new hybrid BTMS lies in the use of an OHP with vertically arranged evaporator and condenser,enabling dual heat transfer pathways through liquid cooling plate and OHP.This study experimentally investigates the performance characteristics of the⊥-shaped OHP and hybrid BTMS.Results show that lower filling ratios significantly enhance the OHP’s startup performance but reduce operational stability,with optimal performance achieved at a 26.1%filling ratio.Acetone,as a single working fluid,exhibited superior heat transfer performance under low-load conditions compared to mixed fluids,while the acetone/ethanol mixture,forming a non-azeotropic solution,minimized temperature fluctuations.At 100 W,the⊥-shaped OHP with a horizontally arranged evaporator demonstrated better heat transfer performance than 2D-OHP designs.Compared to a liquid BTMS using water coolant at 280 W,the hybrid BTMS reduced the equivalent thermal resistance(RBTMS)and maximum temperature difference(ΔTmax)by 8.06%and 19.1%,respectively.When graphene nanofluid was used as the coolant in hybrid BTMS,the battery pack’s average temperature(Tb)dropped from 52.2℃ to 47.9℃,with RBTMS andΔTmax decreasing by 20.1%and 32.7%,respectively.These findings underscore the hybrid BTMS’s suitability for high heat load applications,offering a promising solution for electric vehicle thermal management.
