故障现象一辆2023款荣威i6 MAX EV车,累计行驶里程约为13.6万km。车主反映,3天内出现过2次异常下高压电的故障。故障诊断接车后试车,车辆可以上高压电。用故障检测仪检测,在电池管理系统控制模块(BMS)内存储有故障代码“P0A0D主高压互...故障现象一辆2023款荣威i6 MAX EV车,累计行驶里程约为13.6万km。车主反映,3天内出现过2次异常下高压电的故障。故障诊断接车后试车,车辆可以上高压电。用故障检测仪检测,在电池管理系统控制模块(BMS)内存储有故障代码“P0A0D主高压互锁回路失效-高”,在整车控制器(VCU)内存储有故障代码“P1B43高压互锁回路断开故障”。根据故障代码的提示,初步判断该车异常下高压电是由互锁故障导致的。展开更多
对T6I6时效处理的6061铝合金的拉伸性能、晶间腐蚀性能和电导率进行了测试,并采用OM和TEM对其组织进行了观察.结果表明,6061铝合金经180℃×8 h T6峰值时效后,虽然强度较高,但有严重晶间腐蚀倾向;T6I6预时效时间对拉伸性能影响不大...对T6I6时效处理的6061铝合金的拉伸性能、晶间腐蚀性能和电导率进行了测试,并采用OM和TEM对其组织进行了观察.结果表明,6061铝合金经180℃×8 h T6峰值时效后,虽然强度较高,但有严重晶间腐蚀倾向;T6I6预时效时间对拉伸性能影响不大,但中断时效温度和时间对其影响显著.由于较高的中断时效温度和较长的中断时间能获得高密度的晶内析出相和呈球状不连续分布的晶界析出相,因此,T6I6时效处理后的6061铝合金不仅能保持较高强度,同时还能显著提高晶间腐蚀抗力.经180℃×2 h+150℃×2160 h+180℃×8 h T6I6时效,合金抗拉强度和屈服强度分别为348.5和326.9 MPa,相对于T6状态,仅分别下降了2.1%和1.4%,腐蚀类型由T6状态的晶间腐蚀转变为均匀腐蚀,腐蚀深度约为30μm.展开更多
The effect of T6I6 treatment on the dynamic mechanical and microstructure behaviour of Al-Si-Mg-Cu cast alloy was investigated using split Hopkinson pressure bar(SHPB), transmission electron microscopy(TEM), and highr...The effect of T6I6 treatment on the dynamic mechanical and microstructure behaviour of Al-Si-Mg-Cu cast alloy was investigated using split Hopkinson pressure bar(SHPB), transmission electron microscopy(TEM), and highresolution transmission electron microscopy(HRTEM). Besides, the impact resistances of T6I6 and T6 motor shells of new energy vehicles made of Al-Si-Mg-Cu cast alloy were compared using a trolley crash test. The results indicated that the main strengthening-phases of the T6 peak-aged and T6I6 peak-aged alloy were GP zone and β″ precipitates. T6I6treatment can increase the density and size of β″ precipitates in peak-aged alloy and enhance both its tensile strength(σb)and elongation(δ). The dynamic toughness values of T6I6 samples are 50.34 MJ/m^(3) at 2000 s^(-1) and 177.34 MJ/m^(3) at 5000 s^(-1) which are 20% and 12% higher than those of T6 samples, respectively. Compared with a T6 shell, the overall deformation of T6I6 shell is more uniform during the crash test. At an impact momentum of 3.5×10;kg·m/s, the T6I6shell breaks down at 0.38 s which is 0.10 s later than the T6 shell.展开更多
该机在保持了前辈产品Digimax i50出色的MP3播放功能的基础上，进一步集成了PMP（Personal Media Player）视频播放功能，因此更接受到时尚群体的关注，除了将像素提升到600万外，Digimax i6实现了DC、DV、MP3、PMP功能的完美融合，是...该机在保持了前辈产品Digimax i50出色的MP3播放功能的基础上，进一步集成了PMP（Personal Media Player）视频播放功能，因此更接受到时尚群体的关注，除了将像素提升到600万外，Digimax i6实现了DC、DV、MP3、PMP功能的完美融合，是一款集大成的影音多媒体娱乐终端。展开更多
文摘故障现象一辆2023款荣威i6 MAX EV车,累计行驶里程约为13.6万km。车主反映,3天内出现过2次异常下高压电的故障。故障诊断接车后试车,车辆可以上高压电。用故障检测仪检测,在电池管理系统控制模块(BMS)内存储有故障代码“P0A0D主高压互锁回路失效-高”,在整车控制器(VCU)内存储有故障代码“P1B43高压互锁回路断开故障”。根据故障代码的提示,初步判断该车异常下高压电是由互锁故障导致的。
文摘对T6I6时效处理的6061铝合金的拉伸性能、晶间腐蚀性能和电导率进行了测试,并采用OM和TEM对其组织进行了观察.结果表明,6061铝合金经180℃×8 h T6峰值时效后,虽然强度较高,但有严重晶间腐蚀倾向;T6I6预时效时间对拉伸性能影响不大,但中断时效温度和时间对其影响显著.由于较高的中断时效温度和较长的中断时间能获得高密度的晶内析出相和呈球状不连续分布的晶界析出相,因此,T6I6时效处理后的6061铝合金不仅能保持较高强度,同时还能显著提高晶间腐蚀抗力.经180℃×2 h+150℃×2160 h+180℃×8 h T6I6时效,合金抗拉强度和屈服强度分别为348.5和326.9 MPa,相对于T6状态,仅分别下降了2.1%和1.4%,腐蚀类型由T6状态的晶间腐蚀转变为均匀腐蚀,腐蚀深度约为30μm.
基金Projects(52075166, 51875197) supported by the National Natural Science Foundation of ChinaProjects(2019RS2064,2019GK5043) supported by the Science and Technology Planning Project of Hunan Province,China。
文摘The effect of T6I6 treatment on the dynamic mechanical and microstructure behaviour of Al-Si-Mg-Cu cast alloy was investigated using split Hopkinson pressure bar(SHPB), transmission electron microscopy(TEM), and highresolution transmission electron microscopy(HRTEM). Besides, the impact resistances of T6I6 and T6 motor shells of new energy vehicles made of Al-Si-Mg-Cu cast alloy were compared using a trolley crash test. The results indicated that the main strengthening-phases of the T6 peak-aged and T6I6 peak-aged alloy were GP zone and β″ precipitates. T6I6treatment can increase the density and size of β″ precipitates in peak-aged alloy and enhance both its tensile strength(σb)and elongation(δ). The dynamic toughness values of T6I6 samples are 50.34 MJ/m^(3) at 2000 s^(-1) and 177.34 MJ/m^(3) at 5000 s^(-1) which are 20% and 12% higher than those of T6 samples, respectively. Compared with a T6 shell, the overall deformation of T6I6 shell is more uniform during the crash test. At an impact momentum of 3.5×10;kg·m/s, the T6I6shell breaks down at 0.38 s which is 0.10 s later than the T6 shell.
文摘该机在保持了前辈产品Digimax i50出色的MP3播放功能的基础上，进一步集成了PMP（Personal Media Player）视频播放功能，因此更接受到时尚群体的关注，除了将像素提升到600万外，Digimax i6实现了DC、DV、MP3、PMP功能的完美融合，是一款集大成的影音多媒体娱乐终端。
