A Study on Performance Characterization Considering Six-Degree-of-Freedom Vibration Stress and Aging Stress for Electric Vehicle Battery Under Driving Conditions

Abstract

The battery degradation tests under various stress are critical to understand the relationship between the battery lifespan and the external factors. This paper establishes a battery test bench, which can provide not only the 6-six degree of freedom (DOF) vibration stress but also the charge-discharge stress. By conducting lithium-ion batteries under 6-DOF vibration stress and other reference experiments, the electrochemical impedance spectroscopy (EIS), internal resistances, thermal measurement, open circuit voltage (OCV) recovery and capacity of the cells are compared to determine the impact of the 6-DOF vibration stress on the cells. The experimental results show that the vibration stress increases the ohmic resistance, and also causes a higher heat release. In addition, the cells under vibration stress exhibit a higher capacity fade and a lower OCV recovery rate, while the internal impedance is also changed with vibration stress. In order to quantize the effect of the vibration stress on battery degradation, the analysis of variance (ANOVA) is calculated. The conclusion is that the vibration stress has little impact on the cell polarization resistance, while it significantly affects the ohmic resistance, OCV recovery, thermal measurement, and capacity of cells, respectively.INDEX TERMS Electric vehicle (EV), lithium-ion battery, six-degree-of-freedom (6-DOF) vibration stress, performance test, analysis of variance (ANOVA).

Analysis of Capacity Decay, Impedance, and Heat Generation of Lithium-ion Batteries Experiencing Multiple Simultaneous Abuse Conditions

“…For the cells experiencing only vibration and the cells experiencing vibration and current pulses, the IR of each of the cells increases slightly over their lifetime as expected with no discernible difference in behavior between the different vibrational loads. The increase in resistance for the cells experiencing only vibration increased by 9%-26%, which is similar to other previous research that has shown internal resistance increases of 5%-25% in cells that experience vibration [34,35]. These results agree with previous research that shows when the dynamic load profile is within the scope described in the UN 38.3 standard, no dynamic vibration-related influence can be observed on the ohmic resistance of the LIBs [5].…”

Investigations of Regenerative Braking and Vibration Energy Conservation for Efficient Charging of Lithium-Ion Battery and Supercapacitor Hybrid System in Electric Vehicle Applications

“…Vibrational energy harvesting is a process by which heat, light, vibration, and other external sources release small amounts of energy that would otherwise be lost to the immediate surroundings. [6] Figure 3 shows different sources of vibrations in electric vehicle. In the event of battery failure, the replacement costs can be reinvested to provide continuous power to batteries or supercapacitors.…”

Analysis of Inertial Measurement Units Performances Under Dynamic Conditions

“…A suitable analysis of the sensor under stressed conditions is required to ensure that the considered MEMS-based IMUs will work properly after the installation on a real operating context [18], [19]. However, most of the works found in the literature are based on a static test performed under nominal conditions.…”