Advantages and Disadvantages of Battery

Body batteries also belong to the lead-acid battery system, and colloidal batteries are only colloidal substances added to electrolytes.

The anti-vulcanization ability and low temperature performance of colloidal batteries are better than that of ordinary lead-acid batteries.

However, the production process of colloidal batteries is higher than that of ordinary lead-acid batteries, and it is more prone to thermal runaway.

Advantages and disadvantages of winding battery

Stack:

1: The size is relatively flexible and can be made into triangles, circles, etc..

2: Mechanization is not easy to achieve.

3: Polarization to cut, more sections, easy to pierce the diaphragm, easy short circuit, easy to produce a pay response.

4: The tension of the battery is not easy to control.

5: Polar films are easy to check or select.

Wrap:

1: Mechanization is easy, faster, and uniformity is more guaranteed, which is conducive to large-scale production.

2: The tension between the front and the side is inconsistent, resulting in uneven internal reactions.

3: High requirements for polar film coating.

4: The polar layer is required to have a certain degree of elasticity, otherwise it is easy to fall off or break at the bend.

5: Since the electrode is drawn from one point on the electrode, there is a problem with the distribution of electric fields. The electrode layer is required to have good conductivity. The key is that the process is difficult to control

Ordinary battery is composed of lead and lead oxide to form the battery plate, using aqueous solution of sulfuric acid as an electrolyte to form a battery. Stable voltage and cheap prices make it more widely used, but it stores less power than other batteries and requires regular maintenance and maintenance. Dry charged lead-acid batteries, generally referred to as dry charged batteries, can be stored for 24 months under completely dry conditions. The charging speed is also much faster than that of ordinary batteries. Generally, charging can be completed in about half an hour. The biggest difference between maintenance-free batteries and other batteries is that it does not need to add electrolytes. Some maintenance-free batteries on the market even seal up electrolytes when they are sold, so users are not allowed to add electrolytes at all. The performance of maintenance-free batteries is much better than that of the previous two batteries, such as it is shockproof, high-temperature, small volume, less self-discharge, and its service life is relatively long. However, the price will be relatively expensive, which also meets the needs of different people for the use of batteries.

Definition: The electrode is mainly made of lead and its oxides. The electrolyte is a battery of sulfuric acid solution. English: Lead-acid-battery. Under the discharge state, the positive electrode is mainly composed of lead dioxide, and the main component of the negative electrode is lead; In the charging state, the main components of the positive and negative poles are lead sulfate. Divided into exhaust batteries and maintainable lead-acid batteries.

The battery is mainly composed of tubular positive plates, negative plates, electrolytes, partitions, battery slots, battery covers, pole columns, and injection caps. The electrode of the exhaust battery is composed of lead and lead oxide, and the electrolyte is an aqueous solution of sulfuric acid. The main advantages are voltage stability and cheap; The disadvantages are low specific energy(that is, electrical energy stored per kilogram of battery), short service life and frequent daily maintenance. Old-fashioned batteries generally have a life span of about 2 years and need to regularly check the height of the electrolyte and add distilled water. However, with the development of technology, lead-acid batteries have a longer life and easier to maintain.

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 vent gases. In theory, lead-acid batteries need to check the density and level of the electrolyte at each maintenance. If there is a shortage, add distilled water. However, with the upgrade 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 discharge (such as uninterruptible power supply) and instantaneous discharge (such as car start battery) according to application requirements.

When the discharge is carried out, the concentration of sulfuric acid solution will continue to decrease. When the density of the solution drops to 1.18 g/ml, it should be stopped for charging.

Charge: 2PbSO? +2 H? O = PbO? + Pb + 2H? SO? (cell cell)

Lead batteries

Discharge: PbO? + Pb + 2H? SO? = 2PbSO? +2 H? O(primary battery)

Anode: PbSO? +2 H? O-2e-= PbO? +4H + SO? 2-

Cathode: PbSO? +2 E-= Pb + SO? 2-

Negative: Pb + SO? 2-2e = PbSO?

Positive: PbO? +4H + SO42-+2 E-= PbSO? +2 H? O

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