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机械外载下新能源汽车高压线束失效风险试验研究
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江苏省重点研发计划-产业前瞻与共性关键技术(BE2015065)


Experimental Study of Failure Risk of HighVoltage Harness of New Energy Vehicle under Mechanical Loading
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    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。

    Abstract:

    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.

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郑昊天,尹斌,吴海龙,赖兴华.机械外载下新能源汽车高压线束失效风险试验研究[J].机床与液压,2017,45(5):70-73.
. Experimental Study of Failure Risk of HighVoltage Harness of New Energy Vehicle under Mechanical Loading[J]. Machine Tool & Hydraulics,2017,45(5):70-73

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  • 在线发布日期: 2017-05-09
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