Explosion-proof valve opening pressure detection device

Abstract

The invention relates to the technical field of detection, and discloses an explosion-proof valve opening pressure detection device. The explosion-proof valve opening pressure detection device comprises a detection body, an air inlet pipe, a pressure gauge and a buffer assembly. A cavity is formed in the detection body, and an explosion-proof valve is arranged on the detection body and communicates with the cavity; the air inlet pipe comprises an air inlet and an air outlet, the air inlet is communicated with the air supply device, and the air outlet is communicated with the cavity; the pressure gauge is arranged on the detection body and is close to the anti-explosion valve; the buffer assembly is arranged between the air outlet and the pressure gauge. The explosion-proof valve and the pressure gauge are both arranged on the detection body, and the pressure gauge is arranged close to the explosion-proof valve, so that the pressure gauge can detect the opening pressure of the explosion-proof valve more accurately, and the detection result is more accurate; the buffer assembly is arranged between the gas outlet of the gas inlet pipe and the pressure gauge and used for buffering gas entering the cavity through the gas inlet, and the detection accuracy of the pressure gauge is guaranteed.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to an explosion-proof valve opening pressure detection device. Background technique [0002] In order to ensure the safety of the power battery, an explosion-proof valve is generally installed on the top cover of the power battery. When the battery is improperly charged, short-circuited or abused, the battery will generate a large amount of gas and the temperature will rise sharply. At this time, the gas will The explosion-proof valve will be flushed to release the pressure to ensure the safety of the battery. [0003] In the prior art, in order to detect the opening pressure of the explosion-proof valve, the detection is divided into two steps: 1. After expanding the liquid injection hole of the shell, insert the adapter and the gas conduit, use the gas cylinder as the gas source, and connect the cylinder and A pressure gauge with a pressure reducing valve is set between the she...

AI Technical Summary

Problems solved by technology

Using the above method to detect the opening pressure of the explosion-proof valve has the following defects. The pressure at the explosion-proof valve cannot be directly measured with a pressure gauge. Only the pressure gauge readings at other positions in the measurement system can be used to represent the valve opening pressure value. The gauge value is consistent with the shell In addition, because the gas flow rate is too fast, the pressure in the shell is not uniform, so when the valve is opened, the pressure at the explosion-proof valve is inconsistent with other places, and the reading directly with the pressure gauge is inaccurate

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