Tags: Tags: Misunderstandings in the use of maintenance-free lead-acid batteries
Maintenance-free lead-acid batteries are a good helper for energy storage, whether it is for vehicles, industrial use, household use, and everywhere. The maintenance-free lead-acid battery
uses a lead-calcium alloy as a grid, so the amount of water decomposed during charging is small, and the amount of water evaporation is also low. In addition, the case is sealed, and the release of sulfuric acid gas is also very small, so it is different from the traditional Compared with the battery, it has the advantages of not needing to add any liquid, connecting the pile head, and storing the electricity for a long time. But many people do not know when they are tortured by the battery. In the afternoon, let's talk about several common misuses. 1. New and old maintenance-free lead-acid batteries are mixed in series in battery use, and sometimes new and old batteries are used in series, but this approach will shorten the service life of the battery. Because there are more chemical reaction substances in the new battery, the terminal voltage is higher, and the internal resistance is small (the internal resistance of the new 12V battery is only 0.015-0.018Ω); while the terminal voltage of the old battery is low, the internal resistance is larger (the 12V old battery’s internal resistance is only 0.015-0.018Ω). The internal resistance is above 0.085Ω). If the new battery and the old battery are mixed in series, the charging voltage at both ends of the old battery will be higher than the charging voltage at both ends of the new battery in the charging state. As a result, the new battery has not been fully charged and the old battery has been charged too high; in the discharged state Because the charge capacity of the new battery is larger than that of the old battery, the result is that the old battery is over-discharged and even the old battery is reversed. Therefore, the new and old batteries must not be mixed. 2. One battery in the lead-acid battery pack is damaged and continues to be used during use. For high-power electrical appliances, battery packs are often used to meet the voltage and time requirements of the machine. For example, if the voltage of a machine is 220V, then It requires 18 12VQ lead-acid batteries to work in series, powered by 220V. But when one of the batteries is damaged, some users will cut it off and continue to use it. This will cause a larger discharge current and charging current, resulting in damage to the battery. Therefore, the single battery should be replaced or repaired immediately after it is damaged. continue to use. 3. When the maintenance-free lead-acid battery is working, there is insufficient battery storage, so connect a fully charged battery in parallel and use it together. In fact, a battery that is fully charged in parallel will charge the battery with insufficient charge with a large charging current, which will easily cause the active material of the plate to fall off, affecting its service life.
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