Domestic lead-acid battery life of how many years?

The service life of lead-acid battery is related to many factors, which cannot be generalized. There are the following factors affecting the service life of lead-acid battery:

1. Discharge depth

Discharge depth is used in the process of discharge to what extent stopped. 100% depth refers to release all capacity. Lead-acid battery life is highly affected by the depth of discharge. The focus of the design considerations is deep cycle use, shallow recycled or floating use. If the light cycle used for deep cycle batteries, lead-acid battery will fail soon.

Because of the positive active material of lead dioxide itself in combination with each other not firm, discharge generated when lead sulfate, charging back as the lead dioxide, lead sulfate molar volume is larger than lead oxide, when the discharge volume expansion of active material. If a mole lead oxide into a mole lead sulfate, volume increased by 95% for such repeated contraction and expansion, makes the combination between lead dioxide particles gradually relaxed, easy to fall off. If a mole only 20% of active material of lead dioxide discharge, the degree of the contraction and expansion is greatly reduced, the binding force damage variable is slow, so, the deeper the depth of discharge, the shorter its cycle life.

2. Over-charging degree

When overcharging occurs, a large amount of gas will precipitate out. At this time, the active material on the electrode plate will be impacted by the gas, which will promote the active material to fall off. In addition, the positive grid alloy also suffers from severe anodic oxidation and corrosion, so the battery overcharge will shorten the service life.

3. Influence of temperature

Lead-acid battery with temperature rise and prolong life. Between 10 ℃ ~ 35 ℃, every increase 1 ℃, increase about 5 ~ 6 cycle, between 35 ℃ ~ 45 ℃, every increase 1 above 25 ℃ can prolong life cycle; Above 50 ℃ due to negative sulfide capacity loss reduces the longevity.

The battery life increases with the temperature within a certain temperature range because the capacity increases with the temperature. If the discharge capacity remains unchanged, the discharge depth will decrease with the temperature rising and the solid life will be prolonged.

4. Influence of sulfuric acid concentration

Although the increase of acid density is beneficial to the positive plate capacity, the self-discharge of the battery increases and the corrosion of the grid also accelerates, which also promotes the loose and falling off of lead dioxide. With the increase of acid density used in the battery, the cycle life decreases.

5. Influence of discharge current density

As the discharge current density increases, the battery life decreases, because the high current density and high acid concentration conditions promote the release of the positive lead dioxide.

The designed floating charge life of domestic monomer 12V lead-acid battery is 5-8 years, but it has been completely scrapped within 1-2 years. Regardless of any lead-acid battery (including domestic, imported), in the use of the total can not escape ahead of the scrap cycle. This is the lead-acid battery invention for more than 140 years, the world recognized problem - lead-acid battery "irreversible vulcanization", it is caused by the battery life greatly reduced, and the battery scrapped in advance.

Lead acid battery scrap reason and performance:

There are factors of internal battery quality, as well as factors of battery usage and occasions, but more than 80% of them are caused by the electrochemical reaction principle of lead acid battery itself. A battery is a source of reversible reactions between charge and discharge. After discharge, the materials in the battery are converted into crystals called lead sulfate. After charging, lead sulfate is converted into lead and sulfuric acid. However, when the reaction conditions are not complete and sufficient, it is impossible for lead sulfate to be completely transformed, resulting in the accumulation of lead sulfate, thus reducing the amount of substances involved in the reaction. As reflected in the output of the battery, the battery capacity becomes less and less, and eventually loses its basic function and becomes a waste. This phenomenon of lead-acid batteries is called "vulcanization" (also known as ageing).

Lead-acid batteries gradually produce lead sulfate crystals on the electrode plate during charging and discharging. This phenomenon leads to the aging of the battery, which is manifested as: difficult charging and discharging of the battery; Reduced battery capacity; Further promote the electrode plate corrosion reduced the service life of the battery, lead-acid battery extended maintenance instrument to solve the above problems. It can make the lead sulfate crystal caused by the failure of the expired battery full recovery. It not only brings huge economic benefits to users, but also saves a lot of natural resources and energy for the country, and reduces the serious impact of waste batteries on the environment

Pollution. The wide application of this technology will bring huge benefits to economy, environment and society.

Lead acid battery (VRLA), is a kind of battery whose electrode is mainly made of lead and its oxides and whose electrolyte is sulfuric acid solution. When lead-acid battery is discharging, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead. Under charging condition, the main components of positive and negative electrodes are lead sulfate.

A single-cell lead-acid battery has a nominal voltage of 2.0v and can discharge to 1.5v and charge to 2.4v. In application, 6 single-cell lead-acid batteries are often connected in series to form the nominal lead-acid battery of 12V, 24V, 36V, 48V, etc.

French plante invention lead-acid batteries in 1859, has experienced nearly 150 years development course, lead-acid battery in terms of theoretical research, the species and varieties of products, product electrical performance, etc got great progress, both in transportation, communications, electric power, military and in the field of navigation,special economies, lead-acid batteries have played an indispensable role.

Lead-acid battery construction

Lead-acid battery construction

According to the lead acid battery structure and use difference, roughly divided into four categories of batteries: 1. 2. Lead-acid battery for power; 3, fixed valve-controlled sealed lead-acid battery; 4, other categories, including small valve-controlled sealed lead-acid battery, lead-acid battery for mining lamps, etc.

A single-cell lead-acid battery has a nominal voltage of 2.0v and can discharge to 1.5v and charge to 2.4v. In application, 6 single-cell lead-acid batteries are often connected in series to form the nominal lead-acid battery of 12V. 24V, 36V, 48V, etc.

The main features

Security seal

Lead-acid battery

Lead-acid battery

During normal operation, the electrolyte will not leak out of the battery terminals or enclosure. No free acid

Special absorbent baffles keep the acid inside, and there is no free acid inside the battery, so the battery can be placed in any position.

Frustrated system

When the internal pressure of the battery exceeds the normal level, the VRLA battery will release excess gas and automatically reseal to ensure that there is no excess gas in the battery.

Simple maintenance

Since the gas compounding system converts the resulting gas into water, there is no need to add water in the process of using the VRLA battery.

Long service life

The VRLA battery is made of lead-calcium alloy with anti-corrosion structure and can be charged for 10-15 years.

Stable quality and high reliability

With advanced production technology and strict quality control system, VRLA battery has stable quality and reliable performance. Voltage, capacity and

Seal on line for 100% inspection.

Safety certification

All VRLA batteries are UL certified.

The product application

Standby power

* telecom

* solar energy system

* electronic switching system

* communication equipment: base station, PBX, CATV,WLL,ONU,STB, cordless phone, etc

Backup power supply: UPS,ECR, computer backup system, Sequence, ETC

* emergency equipment: emergency light, fire alarm, burglar alarm, fire brake

The main power supply

* communication equipment: transceiver

* electric control locomotive: acquisition vehicle, automatic transport vehicle, electric wheelchair, cleaning robot, electric vehicle, etc

* mechanical tool starters: lawn mower, hedgetrimmers, cordless electric drill, electric screwdriver, electric sledge, etc

* industrial equipment/instruments

* camera: flash, VTR/VCR, movie lights, etc

Other portable devices, etc

Product structure

The VRLA battery is designed in such a way that a portion of the electrolyte in the battery is absorbed in the electrode sheet and the separator, thereby increasing the negative pole's oxygen absorption capacity, preventing the electrolyte loss and enabling the battery to be sealed.

The designed floating charge life of domestic monomer 12V lead-acid battery is 5-8 years, but it has been completely scrapped within 1-2 years. Regardless of any lead-acid battery (including domestic, imported), in the use of the total can not escape ahead of the scrap cycle. This is the lead-acid battery invention for more than 140 years, the world recognized problem - lead-acid battery "irreversible vulcanization", it is caused by the battery life greatly reduced, and the battery scrapped in advance.

The page contains the contents of the machine translation.