Device and method for judging reliability of air tightness detection equipment

The invention provides a device and a method for judging the reliability of air tightness detection equipment, and belongs to the technical field of storage battery production. Comprising a sample container with a constant and known inner cavity volume, a pressure relief container which is communicated with the sample container and has an adjustable inner cavity volume, and a pressure relief valve which is arranged between the sample container and the pressure relief container and is used for controlling connection and disconnection of the sample container and the pressure relief container. According to the device and the method for judging the reliability of the air tightness detection equipment, the precision and the running state of the air tightness detection equipment can be quickly and accurately measured, misjudgment qualification and misjudgment rejection caused by equipment precision and equipment faults are completely eradicated, the effectiveness of air tightness detection and over-detection is ens