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Focusing on the question of which test rig should be selected in vibration durability test of power battery assembly of passenger car to accurately reproduce the mechanical vibration it borne in real environment, experimental research and systematic analysis and demonstration are carried out. It is proved that the mechanical vibration borne by power battery assembly mainly came from road excitation and the mechanical vibration transmitted to power battery assembly through suspensions mainly resulted in vertical pseudo damage, which is mainly accumulated by low-frequency signals below 5 Hz. Through the analysis of virtual coherent auto-power, it is proved that the mechanical vibration of power battery assembly came from multiple independent excitation sources, which is a typical multiaxial vibration problem. Finally, it is concluded that the 6 DOF vibration test bench should be used to carry out the vibration durability test of power battery assembly of passenger car.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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