VRLA batteries (hereinafter referred to as VRLA batteries) are widely used in practical applications due to their features of saving investment, being easy to install, safe and reliable, and being easy to use. However, due to the lack of understanding of its use requirements, and follow the old balanced charging system, causing greater harm to the battery. 1. Reasons for unbalanced charging (1) What is balanced charging? The so-called balanced charging means equalizing the charging of the battery. This means that during the use of the battery, the battery terminal voltage is unbalanced due to individual differences and temperature differences of the battery. In order to avoid This imbalance in the deterioration of the trend, the need to improve the battery charging voltage, the battery charge activation. (2) Reasons not to charge evenly First of all, the concept of balanced charging concept is that the current large majority of VVCs proposed in the use of old-style lead-acid batteries clearly put forward "voltage equalization and completeness". And "no acid layer within the battery, no need for a balanced charge." The charging voltage for 2.4V cells is defined as "FAST CHARGE" instead of "EQUATION". Second, balanced charging can damage valve-regulated batteries. Equalizing the charging voltage is a high float voltage for most batteries. At this point, most normal batteries are overcharged. Gas can not be complex within the battery to form a certain pressure, the pressure exceeds the safety control valve threshold, the valve opens, the gas discharge from the control valve. In the previous battery maintenance, along with the process of balancing the charge is to adjust the proportion of the battery, which means adding distilled water to supplement the amount of water in order to maintain the balance of the battery. However, in maintenance-free batteries, under the existing maintenance system, there is no need to add water. As a result, the battery will inevitably lose water and the battery will dry up. 2. How to ensure the consistency of the battery terminal voltage after the unbalanced charging is canceled? (1) The decisive factor of the battery terminal voltage First of all, it mainly depends on the electrolyte concentration and the plate material. Battery loss, electrolyte concentration will inevitably increase, so that the battery terminal voltage increases. Second, with the safety valve on the open. If the pressure of the safety valve is too low, it will surely cause the battery to lose water prematurely and the terminal voltage will rise. In addition, the connection state between the series batteries is different, when floating, there will be insufficient charge. When the battery encounters deep discharge and then restore the charge, it is difficult to recover, which will cause the battery terminal voltage is low. (2) battery terminal voltage guarantee means Since there will be inconsistent battery terminal voltage, but also does not allow the battery to be balanced charge, then how should we ensure the consistency of the battery terminal voltage? First, the battery should be from the raw materials, production processes to ensure the consistency of the battery voltage. Such as the choice of battery materials, especially the electrolyte, plates, pressure control valves and other key materials of choice. Second, to ensure the quality of battery installation, battery installation to ensure the consistency of the state. Such as battery connection method, torque balance and so on. In addition to be concerned about the maintenance. For some of the backward battery to restore the charge, but also the proper adjustment of the battery electrolyte; should regularly check the working status of the pressure valve. More Keywords Search: Valve
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