A high-speed crash test device for a vehicle power battery

Abstract

The invention discloses a high-speed collision experiment testing device for a vehicle power battery. A high-pressure air tank, a solenoid valve and an acceleration pipe are connected sequentially in a sealed manner and then are fixed by a fixing device; the other end of the acceleration pipe is in sealed connection with an explosion-proof box body; the central line of the acceleration pipe is perpendicular to the side wall of the explosion-proof box body; a mass block is arranged in the acceleration pipe; a worktable is mounted in the explosion-proof box body; a three-claw chuck is fixedly arranged on the worktable; a pressure sensor is arranged in the worktable; a rail and an index plate are mounted at the bottom of the worktable; the worktable can rotate along the rail around the center of the index plate; a protection box is mounted at the corner of the inner part of the explosion-proof box body; a temperature detection device and an image acquisition device are mounted in the protection box; a battery parameter measurement device is arranged at the outer part of the explosion-proof box body and is connected with battery negative and positive electrode connection electrode pieces on the three-claw chuck by connection wires; and a detection door is formed in the front side of the explosion-proof box body. The device can be used for realizing controllable speed, controllable pressure and controllable collision angle, and can be used for measuring parameters at the collision moment of the battery.

Description

technical field [0001] The invention relates to the technical field of battery experiment equipment, in particular to a high-speed collision experiment test device for a vehicle power battery. Background technique [0002] With the promotion and use of electric vehicles, there have been many safety issues such as fires and explosions caused by battery problems. When an electric vehicle collides at high speed, it will inevitably collide with the battery. If the pressure stability of the battery is not good, dangerous conditions such as fire and explosion will occur. Therefore, it is necessary to study the collision safety of batteries under high-speed and high-voltage conditions. [0003] However, most of the existing research on battery crash safety is aimed at experiments on batteries under low-speed static pressure, such as puncture tests, drop tests, etc. The collision speed and pressure that such experimental devices can provide are difficult to reach real collisions. ...

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing research on battery crash safety is aimed at experiments on batteries under low-speed static pressure, such as puncture tests, drop tests, etc. The collision speed and pressure that such experimental devices can provide are difficult to reach real collisions. Accident level, especially the inability to simulate the high-speed and high-voltage impact conditions of the on-board power battery when the electric vehicle collides at high speed

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