20.07.2014

Lead acid battery plates suppliers qld,lead acid battery care and maintenance kit,lead acid battery dead restore 10x,12 volt lead acid battery weight quickly - Step 2

Author: admin  //  Category: Recharge Car Battery


As this battery container mainly contains sulfuric acid hence the materials used for making a lead acid battery container must be resistant to sulfuric acid.
The glass, lead lined wood, ebonite, hard rubber of bituminous compound, ceramic materials and molded plastics are having the above mentioned properties, hence the container of lead acid battery is made of either of those materials.
The top cover has three holes, one at each end for the posts and one in the middle for vent plug and through which the electrolyte is poured and gases escape out.
There are, in general, two methods of producing the active materials of the cell and attaching them to lead plates. It is seen that since active material on a Plante plate consists of a thin layer of PbO2 formed on and from the surface of the lead plate, it must be desirable to have a large superficial area in order to get an appreciable volume of it. Positive plates are usually produced by Plante Process and the plates are known as Plante Plates. In Faure process, the active material is mechanically applied instead of being electrolytically developed out of lead plate itself as in Plante process. This type cell is relatively expensive and can be charged and discharged fewer times than other types cells.
The connections shown have been used to illustrate the various methods combining cells to form a battery. The terminals a lead-acid battery are usually identified from one another by their size and markings.
The following information concerns the maintenance secondary-cell batteries and is a general nature.
The active ingredient in electrolyte (sulfuric acid, potassium hydroxide, etc.) is heavier than water.


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The material container should also be free from those impurities which deterious to the sulfuric acid. At inside bottom floor of lead acid battery container, there are two ribs to hold the positive lead acid battery plates and another two ribs to hold the negative plates. When an current is passed into this lead acid cell from an external supply, then due to electrolysis, hydrogen and oxygen are evolved. Hence the anode becomes covered with a thin film of PbO2.By continuous reversal of the current or by charging and discharging the thin film of PbO2 will become thicker and thicker and the cell polarity will take increasingly longer time to reverse.
The superficial area of lead acid battery plate can be increased by grooving or laminating. The negative lead acid battery plates can also be manufactured by this process but for negative plate this process is impracticable.
The active material which is in the form of red lead (Pb3O4) or litharge (PbO) or the mixture of two in various proportions, is pressed into the interstices of a thin lead grid which also serves as conductor of current.
A high lead oxide, such as Pb3O4 is used from economic considerations both in current and time, although in practice a mixture of Pb3O4 is employed. Since a single cell normally supplies a voltage only 1.5 volts, more than one cell is needed. The floating charge is used to keep a battery at full charge while the battery is idle or in light duty. The ribs or prisms serve as supports for the plates and at the same time protect them from short-circuits that would otherwise occur as a result of fall of the active material from the plates on to the bottom of the container.


Two lead plates after being subjected to hundreds of reversals will acquire a skin of lead peroxide thick enough to process sufficiently high capacity. The figure shows a Plante positive plate which consists of a pure lead grid with finely laminated surfaces. Faure process is much suitable for manufacturing of negative Faure plates rather than positive lead acid battery plates.In order to obtain large capacity in smaller construction of lead acid battery , a large surface must be exposed to the electrolyte, and since the size of a single plate is limited, so to increase capacity of lead acid battery number of negative and positive plates are connected in parallel. The construction of these plates consists of a large number of thin vertical lamination which are strengthened at intervals by horizontal binding ribs. The adjoining positive and negative plates are separated by placing an insulated berries or separators between them. The main feature of construction of lead acid battery is to accommodate a large volume of active materials i.e. The number of negative plates in a cell is always more than one of number of positive plates so that end plates at both sides of the group remain negative. This assembly of positive and negative plates are immersed in the diluted sulfuric acid in the lead acid battery container.



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