There are many important parts in the engine compartment of a car. They have different divisions of labor and are in charge of various functions of the vehicle. Many of them are easily overlooked by car owners. What we are going to mention today is the car’s battery. This seemingly simple component plays a vital role in the operation of the engine. If it goes on strike, our car will basically be paralyzed by half. How can we avoid battery problems? How to solve the problem? Looking down, we will answer you one by one. The definition and function of a battery First of all, we need to know what a battery is. Batteries are also called accumulators, and accumulators are one of many types of batteries. Simply put, its working principle is to convert chemical energy into electrical energy. The car battery we are talking about refers to the lead-acid battery
, which is mainly composed of lead and other oxides, and uses sulfuric acid solution as the electrolyte. The car battery is a DC power source. Its function is to provide a powerful Starting current, when the generator is overloaded, assist the generator to supply power to the electrical equipment, when the engine is idling, to protect the electrical equipment of the vehicle, and it can convert part of the electrical energy into chemical energy for storage. The structure of the battery The car battery mainly uses a lead-acid battery. This battery is composed of positive and negative plates, separators, shells, electrolyte and terminal posts. The chemical reaction of its discharge depends on the active material of the positive plate and the negative plate. The active material is carried out under the action of electrolyte, and the grid frame of the electrode plate is made of lead-antimony alloy. Battery classification Currently, mainstream car batteries are divided into three categories, namely ordinary batteries, dry-charge batteries and maintenance-free batteries. Among them, maintenance-free batteries are the most common. Most of our family cars are equipped with this type of battery. Ordinary battery: The plate of an ordinary battery is composed of lead and lead oxide, and the electrolyte is an aqueous solution of sulfuric acid. It has the advantages of stable voltage and low price; but the disadvantages are low specific energy (that is, the electric energy stored in the battery per kilogram), short service life and too frequent routine maintenance. Dry-charged battery: Its full name is dry-charged lead-acid battery. Its main feature is that the negative plate has a high power storage capacity. When it is completely dry, it can basically not lose internal power within two years; but how to use it Slightly cumbersome, need to add electrolyte, wait for about 30 minutes to activate. Maintenance-free battery: This battery consumes very little electrolyte and basically does not need to be supplemented with distilled water during its life cycle. In addition, it also has the advantages of shock resistance, high temperature resistance, small size and less self-discharge, and its service life is twice as long as that of ordinary batteries. At present, most family cars are equipped with maintenance-free batteries, and manufacturers such as our common Volkswagen, Citroen, and Nissan have adopted them as standard equipment. It is worth noting that there are two types of maintenance-free batteries currently on the market: one is added with electrolyte at the time of purchase, and there is no need to add supplementary fluid in future use; the other is that the battery has been added with electrolyte before leaving the factory , And completely sealed, no replenisher can be injected later.
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