Device for testing installation strength of composite material battery box shell

A device for testing the installation strength of a composite material battery box shell comprises an installation support and an aluminum alloy plate, the aluminum alloy plate is located above the installation support, installation hole sites corresponding to the battery box shell are formed in the aluminum alloy plate, the aluminum alloy plate and the installation support are connected through bolts, and the installation support and the aluminum alloy plate are isolated through a rectangular gasket. The gasket enables the detected battery box shell to generate a tiny deformation, two groups of nozzles are mounted on the mounting bracket, one group of nozzles spray a coloring agent, the other group of nozzles spray a cleaning agent, the coloring agent is sprayed on the detected composite material battery box shell through the nozzles, and if the battery box shell detected by the detection device has cracks, the battery box shell cannot be damaged. Therefore, loading of defective products is avoided, and hidd