电池抗高g值冲击的性能测试方法

Performance Test for High-g Shock Resistance of Battery

针对弹载存储测试仪用电池抗高g值冲击的性能测试问题,提出以Hopkinson杆为加载手段,利用差动式激光多普勒干涉仪绝对复现冲击加速度值。该方法分别将4种型号的电池以水平和垂直方向放置进行高过载冲击试验,结果表明:电池瞬间掉电主要受加速度峰值影响,固态聚合物锂离子电池的抗冲击性能最高为20万g,而且该性能与冲击方向有关。侵彻钢板试验进一步验证了Hopkinson杆试验的结果,为高过载条件下弹载仪器的电源选用提供依据。

To test and measure the battery high-g shock resistance performance of on-board storage testing instrument,A Hopkinson bar was used to generate an excited acceleration pulse absolutely measured using a differential laser interferometer.The batteries was placed in the horizontal and vertical direction respectively,in the condition of epoxy potting glue for four kinds of models of batteries for high overload impact test.The results showed that the instantaneous voltage drop was mainly affected by the peak acceleration,solid polymer lithium ion battery of shock resistance up to 200 000 g,and the performance was associated with the impact direction.Penetration steel test verified the test results of Hopkinson bar,which provided the basis for selection of batteries on-board instruments with high overload conditions.