Electrode group pressure and acid absorption quantity measurement method for absorptive glass mat (AGM) lead-acid storage battery

Abstract

The invention relates to an electrode group pressure and acid absorption quantity measurement method for an absorptive glass mat (AGM) lead-acid storage battery. In the method, a stretch test machine is used as a test instrument, and the method is carried out according to the following steps of: a, tested electrode group weighing; b, test preparation; c, testing; and d, test data sorting. In the method, the stretch test machine is used and is matched with a test device for accurately simulating the stress of the electrode group during the groove entering, after the groove entering, in an oversaturation state and in a saturation state, the pressure values are calculated, simultaneously, the acid absorption quantity of the whole electrode group at the certain thickness and the certain pressure and the acid absorption quantity of a separation plate with the certain thickness inside the electrode group at the certain pressure can also be tested, the data has the conclusive significance onthe distinguishing and adoption of the separation plates in different specifications and different performance, the defect of storage battery quality fluctuation caused by external factor change is avoided, and the important significance is realized on the quantization detection of the production process and the improvement of the storage battery production quality.

Description

technical field [0001] The invention relates to a lead-acid storage battery manufacturing technology, in particular to the measurement of the pole group pressure and acid absorption of an AGM lead-acid storage battery, and belongs to the technical field of storage batteries. Background technique [0002] In the design of lead-acid batteries, the appropriate electrode group pressure and the acid absorption capacity of the separator are important indicators that affect the main performance of the battery capacity, starting, overcharge life, and cycle life. When the pressure of the pole group is too high, it will cause difficulty in entering the tank, deformation of the side plate, penetration of the separator, and short circuit. Insufficient, easy to short circuit, life shortened. Conversely, when the pressure of the electrode group is too small, the separator cannot reach the designed compression, the acid absorption of the separator will increase, and the negative plate wi...

AI Technical Summary

Problems solved by technology

Due to the lack of a formal AGM lead-acid battery (AGM battery refers to the battery with ultra-fine glass wool material for the separator), it is impossible to predict whether the electrode group pressure has changed? How big is the change? Does it affect battery performance? How big of an impact? The above unknown factors lead to the blindness of the production process and affect the quality of the battery

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