Maintenance and maintenance of car battery
The battery is an indispensable part of the car. According to the variety of existing batteries in the market, it can be roughly divided into two types: the traditional lead-acid battery and the maintenance-free battery that has just been widely used in China in recent years. The following are some of the issues that need to be paid attention to when using and maintaining the battery.
The lead-acid battery is composed of positive and negative plates, separators, shells, electrolytes and wiring pile heads. The chemical reaction of the discharge depends on the active material of the positive electrode plate and the active material of the negative electrode plate in the electrolyte (dilute sulfuric acid solution). The process is carried out in which the grid of the plates is made of lead-bismuth alloy. Conventional batteries will have liquid reduction during use. This is because the ruthenium on the grid will contaminate the lead on the negative plate, causing excessive decomposition of water. A large amount of oxygen and hydrogen will escape from the positive and negative plates, respectively. The liquid is reduced.
The maintenance-free battery is made of lead-calcium alloy. Since the battery uses lead-calcium alloy as the grid, the amount of water decomposition generated during charging is small, the evaporation of water is also low, and the sealed structure of the outer casing is used to release the sulfuric acid gas. Rarely, it has the advantages of no need to add any liquid, less corrosion to the wiring pile head, wire and body, strong anti-overcharge ability, large starting current and long storage time. Compared with traditional batteries, it has been used in recent years. The country is very popular.
No matter which kind of battery, it will slowly discharge itself without using it for a long time, until it is scrapped. Therefore, the car should be started once every certain time to charge the battery. Another method is to pull out the two electrodes on the battery. It is necessary to remove the positive and negative electrode wires from the electrode column. First, unplug the negative wire or remove the connection between the negative electrode and the chassis of the car. Then remove the other end with the positive mark (10). The battery has a certain service life and will be replaced in a certain period of time. The same order should be followed when replacing, but when the electrode wires are connected, the order is reversed, first connected to the positive electrode and then to the negative electrode.
The storage capacity of the battery can be reflected on the instrument panel. When the ammeter pointer indicates that the storage capacity is insufficient, it should be charged in time. Sometimes the power is not enough on the road, and the engine can't start. As a temporary measure, you can ask other vehicles for help. Use the battery on the vehicle to start the vehicle, connect the negative and negative poles of the two batteries, and connect the positive pole to the positive pole. .
Uninterrupted use of the starting opportunity when starting the car causes the battery to be damaged due to excessive discharge. The correct method of use is to take no more than 5 seconds for each time the car is started, and the interval between starts again is not less than 15 seconds. In the case of multiple starts and still not in the car, you should find the reason from other aspects such as circuit, ignition coil or oil circuit.
For wet batteries (lead-acid batteries), the density of the electrolyte should be adjusted according to the standards according to different regions and seasons. In the case of deficient electrolyte, distilled water or special rehydration solution should be added. It should not be replaced by drinking pure water, because pure water contains many trace elements, which will have adverse effects on the battery. In addition, when driving daily, you should always check whether the small hole on the battery cover is ventilated. If the small hole of the battery cover is blocked, the generated hydrogen and oxygen will not be discharged. When the electrolyte expands, the battery case will be broken and the battery life will be affected. Finally, always check the positive and negative electrodes of the battery for signs of oxidation. If there is any hot water, always connect the wire connection of the battery.
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