Maintenance-free detection device and method thereof of air tightness of small cell cover

Abstract

The invention relates to a maintenance-free detection device and a method thereof for the air tightness of a small cell cover, aiming at the problem that the traditional detection device and method are difficult to effectively detect the air leakage of an accumulator cell. The detection device comprises a water tank, the water tank is provided with a liftable device rack which is horizontally provided with a support plate; symmetrical and translational L-shaped stop levers are arranged below both sides of the support plate; the outer ends of the stop levers are provided with core plugs; the support plate is also provided with an inflation device which inflates through a through hole of an electrohydraulic display; and the air inflation device comprises an inflation head. The invention changes the traditional detection method of exposing in the air into the detection device and method of immersing in water, has the advantages of uniform specifications and no deviation and is convenient to routinize the product detection.

Description

technical field [0001] The invention belongs to the technical field of air-tightness detection of lead-acid batteries, and in particular relates to an air-tightness detection device and method for a maintenance-free battery small cover. Background technique [0002] During the manufacturing process of the maintenance-free starting battery, the battery cover is a secondary heat-sealed structure. After the small cover is heat-sealed, it is necessary to conduct an air-tightness test. This is a very important process. Air leakage will cause the battery to break explode. The current detection method is: block the exhaust holes at both ends of the small battery cover exposed in the air with rubber plugs, one end of the plug has an air-filled hole, when the two ends of the small battery cover are blocked, Inflate the inflation hole again, and check whether it is sealed well through the instrument. [0003] However, during the testing process, due to the large impact force during ...

AI Technical Summary

Problems solved by technology

[0003] However, during the testing process, due to the large impact force during inflation and the small vent hole of the small cap, in the case of a deviation in the positioning of the plug, the vent hole of the small cap is likely to be damaged during inflation. If it cannot be discovered in time, it will be discovered when the battery has completed the second heat seal, which will cause the damaged vent hole to be repaired and cause the battery to be scrapped

On the other hand, it is difficult to effectively detect small air leakage by using this air tightness test method to detect the battery, and liquid leakage often occurs during subsequent use.

In addition, the existing air tightness testing methods vary according to the testing experience and proficiency of different testing personnel, which may also easily lead to deviations in the testing conclusions

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