Start-stop AGM battery air tightness detection structure and detection method

Abstract

The invention provides a start-stop AGM battery air tightness detection structure and detection method, and belongs to the technical field of lead-acid storage batteries, the start-stop AGM battery air tightness detection structure comprises a first detection channel and a second detection channel which are arranged in parallel, and the first detection channel is sequentially provided with a first valve, a first air chamber and a second valve; and a third valve, a second air chamber and a fourth valve are sequentially arranged on the second detection channel. According to the start-stop AGM battery air tightness detection structure, the first detection channel and the second detection channel can be independently opened by opening and closing the first valve, the second valve, the third valve and the fourth valve. When the first detection channel is opened, the airtightness of a sealing plug can be detected, including the airtightness of the sealing plug and the airtightness of an upper seal and a lower seal of the sealing plug and the shell. And when the second detection channel is opened, the air tightness of a battery shell and a battery cover can be detected. And the phenomena of performance reduction of battery capacity, low temperature, service life and the like caused by poor sealing of the areas are avoided.

Description

technical field [0001] The invention belongs to the technical field of lead-acid storage batteries, and more specifically relates to an airtight detection structure and detection method of an AGM battery for starting and stopping. Background technique [0002] The AGM battery is a valve-regulated sealed lead-acid battery, which adopts a sealed design. There is a sealing plug on the upper part of the battery. When the internal pressure of the battery is small, the sealing plug is in a closed state. When the internal pressure of the battery is too high, the valve core of the sealing plug is opened to release the pressure, so as to ensure that the battery will not bulge or explode. The main difference between AGM batteries and ordinary batteries is that AGM batteries have gas recombination reactions during charging. When charging, the oxygen generated on the positive electrode is transmitted to the negative electrode through the micropores on the AGM separator for recombinatio...

AI Technical Summary

Problems solved by technology

When charging, the oxygen generated on the positive electrode is transmitted to the negative electrode through the micropores on the AGM separator for recombination reaction. The poor airtightness of the battery will cause the oxygen generated by the positive electrode to be discharged directly from the battery, and the oxygen cannot be transmitted to the negative electrode for reaction, resulting in insufficient charging of the battery. , electrolyte loss and other problems will affect the battery capacity, low temperature, life and other performance

Therefore, the air tightness detection of AGM batteries is very important, but due to the unique structural design of AGM batteries, there is currently no complete air tightness detection method for starting and stopping AGM batteries

Images