What to repair lead-acid battery
Definition: The electrode is mainly made of lead and its oxide, and the electrolyte is a battery of sulfuric acid solution. English: Lead-acid battery. In the discharge state, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead; in the charged state, the main components of the positive and negative electrodes are lead sulfate. Divided into exhaust battery and maintenance-free lead-acid battery. The battery is mainly composed of a tubular positive plate, a negative plate, an electrolyte, a separator, a battery tank, a battery cover, a pole, and a liquid injection cover. The electrode of the vented battery is composed of an oxide of lead and lead, and the electrolyte is an aqueous solution of sulfuric acid. The main advantage is that the voltage is stable and the price is cheap; the disadvantage is that the specific energy is low (ie, the energy stored per kilogram of battery), the service life is short, and the daily maintenance is frequent. Old-fashioned ordinary batteries generally have a life span of about 2 years, and the height of the electrolyte is regularly checked and distilled water is added. However, with the development of technology, the life of lead-acid batteries has become longer and the maintenance is simpler. The most obvious feature of a lead-acid battery is that it has a screw-open plastic sealing cap on top and a venting hole. These filling caps are used to fill pure water, check electrolytes and exhaust gases. In theory, lead-acid batteries need to check the density and level of the electrolyte at each maintenance, and if necessary, add distilled water. However, with the upgrading of battery manufacturing technology, lead-acid batteries have developed into lead-acid maintenance-free batteries and gel-free maintenance-free batteries. Lead-acid batteries do not require the addition of electrolyte or distilled water. The main purpose is to use the positive electrode to generate oxygen to absorb the oxygen in the negative electrode to prevent the water from decreasing. Lead-acid water batteries are mostly used in tractors, tricycles, and automobile starters, while maintenance-free lead-acid batteries have a wider range of applications, including uninterruptible power supplies, electric vehicle power, and electric bicycle batteries. Lead-acid batteries are classified into constant current discharges (such as uninterruptible power supplies) and transient discharges (such as automotive start batteries) depending on the application. Commonly used lead-acid batteries are mainly divided into three categories:
1) Ordinary battery; the plate of an ordinary battery is composed of oxides of lead and lead, and the electrolyte is an aqueous solution of sulfuric acid. Its main advantage is that the voltage is stable and the price is cheap; the disadvantage is that the specific energy is low (that is, the energy stored per kilogram of battery), the service life is short, and the daily maintenance is frequent.
2) Dry-loaded battery: Its full name is dry-charged lead-acid battery. Its main feature is that the negative plate has a high storage capacity of 2V lead-acid battery. In the completely dry state, it can be stored within two years. The amount of electricity, when you use it, just add the electrolyte and wait for 20-30 minutes.
3) Maintenance-free battery: Maintenance-free battery due to its own structural advantages, the consumption of electrolyte is very small, and it is basically unnecessary to supplement distilled water during the service life. It also has the characteristics of shock resistance, high temperature resistance, small size and small self-discharge. The service life is generally twice that of a normal battery. There are two types of maintenance-free batteries on the market: the first one requires no maintenance (addition of replenishing liquid) during the one-time application of the electrolyte at the time of purchase; the other is that the battery itself has been charged with electrolyte and sealed off at the factory. , the user can not add supplemental liquid at all