Overall vehicle vibration test system used for electric vehicle

The utility model provides an overall vehicle vibration test system used for an electric vehicle, which comprises a road spectrum acquisition device and a power battery simulator. The road spectrum acquisition device is connected with a servo valve of an actuating cylinder via an actuating cylinder controller; a hydraulic pump station is connected with the actuating cylinder via a high-pressure oil pipe; wheels of a tested vehicle are respectively placed on the actuating cylinder; the power battery simulator is connected with a power battery of the tested vehicle via a high-voltage bus and a low-voltage communication interface; and the power battery simulator is connected with a main control computer. According to the test system, overall vehicle road simulation condition bench test for the electric vehicle can be realized in a battery pack discharging state, and fatigue durability of the overall vehicle body and the chassis of the electric vehicle, reliability and durability of the power battery, discharging characteristics of the power battery under vibration and reliability of the low-voltage electrical system can be more accurately evaluated.