Method and device for grouping lead-acid batteries

Abstract

The invention discloses a method for assemblage of lead-acid storage batteries, comprising: adding acid to the assembled single cells in vacuum, charging and internalizing the single cells in a water tank frame; and internally forming the single cells Discharge and measure the termination voltage of the single battery; charge the single battery at a constant voltage, and measure the charging voltage of the single battery when the charging current reaches the preset current value; stand the charged single battery After the preset time interval, the open circuit voltage of the single battery is measured; the batteries are matched according to the termination voltage, charging voltage and open circuit voltage of the single battery. In addition, the invention also discloses a lead-acid accumulator assembly device. By adopting the invention, the service life of the battery pack is prolonged.

Description

technical field [0001] The invention relates to a battery matching method, in particular to a lead-acid storage battery matching method and a matching device. Background technique [0002] At present, the grouping method of lead-acid batteries is based on the discharge voltage of the battery (20 12V batteries) to the discharge voltage of the 214V scale, and the static voltage after standing for 24 hours according to the process requirements of the two. The process of grouping pays more attention to the capacity of the battery, but not enough attention to the voltage of the single battery itself. Therefore, the battery capacity of the assembled battery pack is almost the same. However, during the user's use, because the entire battery pack (including multiple batteries) is charged with constant voltage and current limitation during the charging process, and because the battery voltage is between the batteries when they are charged in series. There are differences, so high-vo...

AI Technical Summary

Problems solved by technology

The process of grouping pays more attention to the capacity of the battery, but not enough attention to the voltage of the single battery itself

Therefore, the battery capacity of the assembled battery pack is almost the same. However, during the user's use, because the entire battery pack (including multiple batteries) is charged with constant voltage and current limitation during the charging process, and because the battery voltage is between the batteries when they are charged in series. There are differences, so high-voltage batteries are prone to overcharging, which will lead to more serious water loss, higher acid concentration, larger capacity, and faster capacity decay; low-voltage batteries are prone to not being fully charged. , resulting in severe sulfation of the plate, larger particles, and lower discharge capacity

As a result, the differences between the batteries in the battery pack are increased. Low-voltage batteries appear to be undercharged, and large particles of sulfuric acid appear on the plates. As the cycle progresses, a single battery will gradually fall behind and the capacity will decrease.

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