What is the cycle life of lead-acid battery?

The service life of lead acid battery is related to many factors. The factors affecting the service life of the lead-acid battery are as following:

1, the depth of discharge

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, the degree of charging

Charging with a large number of gas evolution, then the impact of the positive plate active substances by gas, the impact will promote active material loss; In addition, the positive plate grid alloy also suffered serious anodic oxidation and corrosion, so the battery charging will make the application period shorten.

3, the influence of the temperature

Lead-acid battery with temperature rises and prolongs 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.

Battery life in a certain temperature range increases with temperature rise, because the capacity increases with temperature rise. If the discharge capacity, are at higher temperatures the discharge depth down, solid and prolong service life.

4, the influence of the concentration of sulfuric acid

Acid density increase, is advantageous to the positive plate capacity, but increased the self-discharge of the battery, board gate corrosion is accelerated, also helped lead dioxide loose fall off, with the increase of storage battery used in the acid density, cycle life.

5, the influence of the discharge current density

As discharge current density increases the life of the battery, because under the condition of high current density and high acid concentration, to promote the positive lead dioxide loose fall off.

Domestic monomer 12 v lead-acid battery design floating life for five to eight years, but 1-2 years has been completely discarded. No matter any lead-acid battery (including domestic and imported), in the use of total has not been spared from scrap cycle ahead of time. This is lead-acid battery invented more than 140 years, universally acknowledged worldwide problem, lead-acid battery "irreversible sulfide," is that it leads to greatly reduce the service life of battery, and make a battery scrap in advance.

Lead-acid battery scrap reason and performance:

Have battery inner quality factors, also have battery usage and circumstance factors, but more than 80% or because the electrochemical reaction mechanism of lead-acid battery itself may go. The power of the battery can be charge and reversible reaction, after discharge the battery inside the material response into one, called the lead sulfate crystals, lead sulfate and lead into after charging and sulphuric acid, so the reversible reaction. But when the reaction condition is not completely and fully, lead sulfate is impossible to completely transform, that cause the accumulation of lead sulfate, thereby reducing the reaction of the material quantity, reflected in the output of the battery is the battery capacity is less and less, eventually lose basic function, become a waste. Lead-acid battery of this kind of phenomenon is called "cure" (also known as aging).

Lead-acid battery in the process of charging and discharging, gradually produce lead sulfate crystals on the electrode plates. This phenomenon leads to the battery aging, its performance is: the battery charge and discharge difficult; Battery capacity; Further promote the plate electrode corrosion reduces the service life of the battery, lead acid accumulator nobu instrument make the problem solved. It can make of invalidation as a result of lead sulfate crystals expired battery fully recovered. It's on to bring huge economic benefits to users at the same time, to the country save a lot of natural resources and energy, and reduce the environment pollution of the waste battery is serious

Pollution. The wide application of this technology will bring economic, environmental, and social benefits.

Lead-acid battery (VRLA), is a kind of electrode is mainly composed of lead and its oxide, battery electrolyte is sulfuric acid solution. Lead-acid battery discharge condition, the positive main ingredients for lead dioxide, negative main ingredients to lead; Charging status, the main components are all lead sulfate is negative.

A single case of lead-acid battery nominal voltage is 2.0 V, can discharge to 1.5 V, can charge to 2.4 V. In the application, often together with six single lead-acid batteries of nominal is 12 v lead-acid battery, and 24 v, 36 v, 48 v, 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 structure

Lead-acid battery structure

According to the structure and USES the difference between lead-acid batteries, battery roughly divided into four categories: 1, starting with lead-acid battery;2, power use lead-acid batteries;3, a fixed valve control type sealed lead acid battery;4, other classes, including small valve-control sealed lead-acid battery, miner's lamp with lead-acid battery, etc.

A single case of lead-acid battery nominal voltage is 2.0 V, can discharge to 1.5 V, can charge to 2.4 V. In the application, often together with six single lead-acid batteries of nominal is 12 v lead-acid battery. There are 24 v, 36 v, 48 v, etc.

The main features

Security seal

Lead-acid battery

Lead-acid battery

In normal operation, the electrolyte will not leaking from the battery terminal or shell. There is no free acid

Special liquid partition keeps acid, no free acid inside the battery, so the battery can be placed in any position.

Frustrated system

After the battery internal pressure is beyond normal levels, VRLA batteries will blow off gas and automatically seals, guarantee no excess gas in the battery.

Simple maintenance

Due to the complex system makes the gas into water, in the process of using VRLA batteries don't need to add water.

The service life is long

Adopted the structure of lead calcium alloy corrosion resistant tailgate VRLA battery can be used floating 10-15 years.

Stable quality and high reliability

The use of advanced production technology and strict quality control system, the VRLA battery quality is stable, reliable in performance. Voltage, capacity and

Seal online 100% inspection.

Safety certification

All VRLA batteries have passed UL safety certification.

The product application

Standby power

* Telecom

* Solar system

* Electronic switching system

* Communication equipment, base station, PBX, CATV, WLL, ONU, STB, cordless phones, etc

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

* Emergency equipment: emergency lights, fire theft alarm, fire damper

The main power supply

* Communication equipment: the transceiver

* Electric locomotive control: acquisition, automatic truck, electric wheelchair, cleaning robot, electric cars, etc

* Machine tools starter: lawnmower, hedgetrimmers, cordless electric drill, electric screwdriver, electric sled, and so on

* Industrial equipment/instrument

* Camera: flash, VTR + / VCR, film lights, etc

Other portable devices, and so on

Product structure

VRLA battery is designed like this: in the battery, part of the amount of electrolyte is absorbed in the plate and baffle plate, thus increasing the cathode oxygen ability to prevent the electrolyte loss, so that battery can realize sealing.

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