机械外载下新能源汽车高压线束失效风险试验研究
|
摘要
新能源汽车的普及和发展急需解决电池系统的碰撞安全问题。文中选取动力电池系统的典型碰撞失效工况,设计了高压线束剪切和穿刺试验装置,使用万能试验机进行不同速度的加载和失效载荷测量,使用数字图像相关法(DIC,Digital Image Correlation)测量线束变形及失效位移,获得了高压线束在不同载荷工况下的力学特性和失效行为。研究结果表明:电池高压线束的失效特性与载荷工况、加载速度及加载接触面积高度相关。剪切试验中随着加载速度的增大,失效载荷也不断增大;穿刺试验失效载荷随着冲头直径增大而显著增加。
Safety of battery system in collision is critical for the development and popularization of new energy vehicle. The device for shear tests and punch tests for the high-voltage harness was deigned by selection of drive battery system under typical failure conditions in collision. A universal tensile test machine was used to impose loading at different velocities and measure failure load. The deformation and failure displacements of the harness were measured using optical Digital Image Correlation( DIC) related approach. The mechanical properties and failure behavior of high-voltage harness were acquired under different load conditions. Study results show that,the failure properties of the high-voltage harness of batter cell are highly related to loading condition,loading speed and contact indentation area. The higher the loading speed,the greater is the failure load for shear test. In punch test,the failure load is increased significantly with the growth of diameter indentation area.
Safety of battery system in collision is critical for the development and popularization of new energy vehicle. The device for shear tests and punch tests for the high-voltage harness was deigned by selection of drive battery system under typical failure conditions in collision. A universal tensile test machine was used to impose loading at different velocities and measure failure load. The deformation and failure displacements of the harness were measured using optical Digital Image Correlation( DIC) related approach. The mechanical properties and failure behavior of high-voltage harness were acquired under different load conditions. Study results show that,the failure properties of the high-voltage harness of batter cell are highly related to loading condition,loading speed and contact indentation area. The higher the loading speed,the greater is the failure load for shear test. In punch test,the failure load is increased significantly with the growth of diameter indentation area.
引文
[1]梁旭升.关于我国新能源汽车的现状级前景展望[J].科技展望,2016,26(10):294.
[2]张永军.新能源汽车发展现状及应用前景探讨[J].应用能源技术,2015(12):24-26.ZHANG Yongjun.Discussion on the Development Status and Application Prospect of New Energy Vehicles[J].Applied Energy Technology,2015(12):24-26.
[3]康凯,王军雷,杨凯.国内外新能源汽车发展及政策导向[J].汽车工业研究,2014(8):4-10.
[4]国务院.节能与新能源汽车产业发展规划(2012-2020)[J].中国资源综合利用,2012,30(7):16-20.
[5]SMITH B.Chevy Volt Battery Incident Summary Report[J].Accident Reconstruction Journal,2012,23:31-37.
[6]XIA Yong,WIERZBICKI Tomasz,SAHRAEI Elham,et al.Damage of Cells and Battery Packs Due to Ground Impact[J].Journal of Power Sources,2014,267:78-97.
[7]周红斌.电动汽车的高压线束研究[J].汽车实用技术,2012(9):73-76.ZHOU Hongbin.Research of EV High Voltage Electrical Wiring Harness[J].Automobile Applied Technology,2012(9):73-76.
[8]陆才华,王超,苏建,等.电动乘用车高压线束的设计[J].光纤与电缆及其应用技术,2016(5):20-24.LU Caihua,WANG Chao,SU Jian,et al.Design of HighVoltage Harness for Electric Commuter Car[J].Optical Fiber&Electric Cable and Their Applications,2016(5):20-24.
[9]李茗.高压线束应对新能源汽车的挑战[J].零部件论坛,2011(7):15.
[10]SAE J1673-High Voltage Automotive Wiring Assembly Design[S].2012.
[11]张春梅,徐涛.新能源汽车混合动力系统整车高压线束设计[J].汽车电器,2013(6):6-9.ZHANG Chunmei,XU Tao.Design of High Voltage Harness for Hybrid Power System on New Energy Automobile[J].Auto Electric Parts,2013(6):6-9.
[12]夏桂锁.数字图像相关测量方法的理论及应用研究[D].天津:天津大学,2003.
[13]汪凯.车用材料和构件力学行为测试方法研究及实施[D].北京:清华大学,2010.
[2]张永军.新能源汽车发展现状及应用前景探讨[J].应用能源技术,2015(12):24-26.ZHANG Yongjun.Discussion on the Development Status and Application Prospect of New Energy Vehicles[J].Applied Energy Technology,2015(12):24-26.
[3]康凯,王军雷,杨凯.国内外新能源汽车发展及政策导向[J].汽车工业研究,2014(8):4-10.
[4]国务院.节能与新能源汽车产业发展规划(2012-2020)[J].中国资源综合利用,2012,30(7):16-20.
[5]SMITH B.Chevy Volt Battery Incident Summary Report[J].Accident Reconstruction Journal,2012,23:31-37.
[6]XIA Yong,WIERZBICKI Tomasz,SAHRAEI Elham,et al.Damage of Cells and Battery Packs Due to Ground Impact[J].Journal of Power Sources,2014,267:78-97.
[7]周红斌.电动汽车的高压线束研究[J].汽车实用技术,2012(9):73-76.ZHOU Hongbin.Research of EV High Voltage Electrical Wiring Harness[J].Automobile Applied Technology,2012(9):73-76.
[8]陆才华,王超,苏建,等.电动乘用车高压线束的设计[J].光纤与电缆及其应用技术,2016(5):20-24.LU Caihua,WANG Chao,SU Jian,et al.Design of HighVoltage Harness for Electric Commuter Car[J].Optical Fiber&Electric Cable and Their Applications,2016(5):20-24.
[9]李茗.高压线束应对新能源汽车的挑战[J].零部件论坛,2011(7):15.
[10]SAE J1673-High Voltage Automotive Wiring Assembly Design[S].2012.
[11]张春梅,徐涛.新能源汽车混合动力系统整车高压线束设计[J].汽车电器,2013(6):6-9.ZHANG Chunmei,XU Tao.Design of High Voltage Harness for Hybrid Power System on New Energy Automobile[J].Auto Electric Parts,2013(6):6-9.
[12]夏桂锁.数字图像相关测量方法的理论及应用研究[D].天津:天津大学,2003.
[13]汪凯.车用材料和构件力学行为测试方法研究及实施[D].北京:清华大学,2010.