1. Basic construction:Positive and negative plates (1)
● The polar plate of the lead-acid battery can be divided into four categories: plate plate, tubular plate, chemical form plate, semi-formed plate.
● The paste plate (coarable polar plate) is composed of a grid and an active substance.
● The role of the grid is to support the active substance and the conductive current, and the current distribution is uniform.
● The material of the grid is generally leading with lead-free alloy, and the maintenance of the battery with lead calcium alloy.
● The main component of the positive electrode active material is a lead in which the neutral active material is mainly a velvet lead.
Partition (2)
● The battery separator is made of microporous rubber, pigment fiberglass and other materials, and its main role is:
■ Prevent positive and negative plates from shorting.
■ Make the positive and negative ions in the electrolyte.
■ Subtocking the positive and negative plate active substances to prevent positive and negative plates from damage due to vibration.
● Therefore, there is a high hole ratio, small aperture, acid resistance, and no secretion of harmful impurities, have a strong strength, and has a small resistance in the electrolyte, and has chemical stability.
Electrolyte (3)
● Electrolyte is a battery'>An important part of the battery, its role is to conduct current and participate in electrochemical reactions.
● The electrolyte is formulated by concentrated sulfuric acid and purified water (ion water), the purity and density of the electrolyte has an important impact on battery capacity and life.
● The electrolyte density of the automotive lead-acid battery is 1.280±0.005 g / cm3 (25 ° C) dilute sulfuric acid.
Battery housing, cover (4)
● Battery housing, cover is a container of a positive, negative plate, and electrolyte, generally made of plastic and rubber material.
Exhaust plug (5)
● Generally made of plastic materials, sealing the battery, prevent air from entering, preventing the plate oxidation. At the same time, the gas generated in the battery can be discharged to the battery during charging, and the battery is hazardous.
● Before use: The blind hole on the exhaust gas must be pierced with wire to ensure that the gas spill is smooth.
other:
In addition to the above components, there is a chain (6), a pole column (7), a saddle (8), a liquid surface indicator, and other components.
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