Pressurized capillary water absorption height and water absorption amount measuring device and measuring method thereof

Abstract

The invention discloses a pressurized capillary water absorption height and water absorption amount measuring device and measuring method thereof. The measuring device comprises fixing holes, pressurizing bolts, clamping plates, and a partition paper. The upper portions of the clamping plates are provided with the fixing holes used for fixing the top of the measuring device; the clamping plates are further provided with pressurizing bolts used for carrying out pressure regulation on the clamping plates and simulating true pressure; the clamping plates has two pieces, and a separator paper is sandwiched between the two clamping plates to form a closed environment. An aqueous solution containing a methyl red indicator is arranged in a containing groove. 6 inches of the bottom of the clampingplates are immersed in the aqueous solution containing the methyl red indicator. The containing groove is arranged in a constant-temperature device. The measuring device and the measuring method canbe used for detecting the capillary water absorption (acid) height of the AGM (Absorbent Glass Mat) separator in a pressurized state and measuring pressurized water absorption (acid) amount at the same time.

Description

technical field [0001] The invention relates to the field of lead-acid batteries, in particular to a device and method for measuring pressurized capillary water absorption height and water absorption capacity. Background technique [0002] The lead-acid battery includes a pressure-resistant sealed tank, which contains an acid electrolyte, and the battery separator is set in the tank. In a lead-acid battery, the separator should provide the plate with acid solution without any concentration change from the bottom to the top, and allow the movement between the electrolyte and the plate. This function of the separator is through the capillary acid height value. Therefore, efficient capillary absorption is a key characteristic of lead-acid battery separators. At present, the determination of the capillary acid absorption height of the lead-acid battery separator is generally measured under the condition of no pressure. However, due to the elasticity of the separator, there is a...

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Problems solved by technology

At present, the determination of the capillary acid absorption height of the lead-acid battery separator is generally measured under the condition of no pressure. However, due to the elasticity of the separator, there is a difference between the capillary acid absorption height under normal conditions and under pressure, resulting in test The data is not accurate, so that the test data lacks due guiding significance for actual production

At the same time, the capillary acid absorption height and pressurized acid absorption test items of the general separator are measured by one instrument respectively. Since different instruments are used for measurement, the measurement results cannot express the relationship intuitively.

[0003] At present, the instrument used to detect the capillary acid height of the separator basically has the measurement under constant temperature conditions, which reduces part of the error caused by the measurement as the season changes. However, due to the measurement under external conditions, it is impossible to simulate the time inside the battery. capillary acid height under stress

At present, there are many equipments used to detect the pressure acid absorption of the separator, and the measurement method tends to be simple and convenient, but no pressurized acid absorption equipment can measure the capillary acid absorption height of the separator under pressure

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