VRLA battery charge balance principle analysis

VRLA batteries ( hereinafter referred to as VRLA battery ) With saving investment , easy installation, safe, reliable, easy to use and other characteristics, in practical applications are heavily used. However, due to lack of understanding of its requirements and follows the old balance charging system, the battery causing great harm.
1 reason to cancel the equalizing charge
( A ) What is a balanced charge
The so-called balancing charge, the charge is balanced battery characteristics , is the process of using the battery , because the battery individual differences, temperature differences causes the battery terminal voltage imbalance , the imbalance in order to avoid deterioration of the trend , needs to improve battery set charging voltage , charging the battery activation .
( 2 ) the reasons for not equalizing charge
First, the concept of a balanced charge concept is used in the old-fashioned lead-acid batteries currently proposed large majority VRLA batteries are clearly stated, " voltage balance , into thoroughly ." The " battery acid layer is not formed , without the need for a balanced charge ." For single 2.4V battery charge voltage is defined as the charging speed , the "FASTCHARGE", rather than "EQUATION".
Secondly , a balanced valve-regulated battery charging will cause damage . Equalizing charge voltage for most batteries, are higher float voltage . At this point, most normal cells are in the overcharge status. The gas in the battery can not be combined within a certain pressure , the pressure control valve exceeds the safety threshold, the valve opens , the gas discharged from the control valve .
In previous battery maintenance , along with the process of equalizing charge the battery weight is adjusted such that the approach used to add distilled water add water , in order to maintain the equilibrium of the battery . However, the battery maintenance ,marker cable ties the maintenance of the existing system is water , and this way, water loss will inevitably cause the battery , dry battery .
2 Cancellation equalization charge, how to ensure the consistency of the battery terminal voltage
( 1) The battery terminal voltage determinant
Firstly, it is determined from the concentration of the electrolyte and the electrode materials . Cell dehydration , electrolyte concentration must increase , the battery terminal voltage increases. Secondly , the opening of the safety valve . If the pressure relief valve is too low, will inevitably lead to premature battery water loss , the terminal voltage rises. In addition , the series connection state between the battery is different, float occur when insufficient charging . When the battery is experiencing deep discharge recovery charge then , it is difficult to restore , this will cause the battery voltage is low.
( 2 ) the battery terminal voltage of assurance that
Since the battery terminal voltage will exist inconsistencies, do not allow battery equalizing charge , then the battery terminal voltage should be how to ensure consistency ? Should start battery raw materials, production processes to ensure the consistency of the battery voltage . The choice of materials such as batteries , in particular electrolyte plate , the pressure control valves and other key material selection .truck seal Second, we must ensure that the quality of the battery installed , ensure that the battery installed state consistency. For example, the battery connection method, such as the balance of torque . Also in the maintenance of attention. For some behind the recovery of batteries to be charged , but also properly adjusting the battery electrolyte ; should periodically check the pressure valve working condition.