The difference between lead-carbon batteries and lead-acid batteries

The lead-acid battery is a relatively old battery, has been used for 150 years, the performance is good, but it is difficult to support large current deep discharge;

Lead-carbon battery is a new type of super battery. You can understand it as follows: lead-acid battery and supercapacitor are integrated into a lead-carbon battery.

It not only gives full play to the advantages of the ultra capacitor's instantaneous large capacity charging, but also gives full play to the specific energy advantages of lead-acid battery, and has very good charging and discharging performance -- it can be fully charged in 90 minutes (if lead-acid battery is charged and discharged in this way, its life is less than 30 times). In addition, the addition of carbon (graphene) prevents the negative electrode from being sulfurated, which improves a factor of past battery failure and prolongs the battery life.

The former is an improvement of the latter. Carbon material (C) with double-layer capacitance and negative electrode of sponge Lead (Pb) are combined to make a lead-carbon double-functional composite electrode (hereinafter referred to as lead-carbon electrode) with both capacitance and battery characteristics. The lead-carbon composite electrode is then matched with the positive electrode of PbO2 and assembled into a lead-carbon battery. Job features:

1) when the battery operates in frequent instantaneous large current charging and discharging, the current is mainly released or received by the carbon material with capacity characteristics, which inhibits the "negative electrode sulfation" of the lead-acid battery and effectively extends the service life of the battery;

(2) when the battery is operated with a long time and a small current, it is mainly operated by the negative electrode of sponge lead, which continuously provides energy;

(3) the intervention of high carbon content in the lead-carbon super composite electrode enables the electrode to have better low-temperature start-up ability, charging and receiving the ability and high-current charge-discharge performance than the traditional lead-acid battery.

1. Discharge depth

The discharge depth refers to the degree to which the discharge starts and stops during use. The life of lead-acid batteries is greatly affected by the depth of discharge. Design considerations focus on deep cycle use, shallow cycle use or floating charge use. Lead-acid batteries can quickly fail if they are used for deep recycling.

Because of the weak combination of the positive active material lead dioxide itself, the lead sulfate is generated when discharging and then returns to lead dioxide when charging. The molar volume of lead sulfate is larger than that of lead oxide, so the volume of active material expands when discharging. If a mole of lead oxide is transformed into a mole of lead sulfate, the volume will increase by 95%. In this way, repeated shrinkage and expansion will gradually relax the combination of lead dioxide particles and make them easy to fall off. If only 20% of the active material of one mole of lead dioxide discharges, the degree of shrinkage and expansion will be greatly reduced, and the damage of binding force will be slow. Therefore, the deeper the discharge depth is, the shorter its cycle life will be.

2. Over-charging degree

During overcharging, 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 life increases with temperature. 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 increases with temperature within a certain temperature range because capacity increases with temperature. If the discharge capacity remains unchanged, the discharge depth decreases and the solid life is prolonged when the temperature increases.

What is the difference between lead-acid batteries and lead-carbon batteries

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 positive lead dioxide is loose and falls off under the condition of high current density and high acid concentration.

What are the differences between lead-carbon batteries and lead-acid batteries and lead-carbon batteries

Lead-carbon battery is an innovative technology of lead-acid battery, which has many advantages over the lead-acid battery. Lead-carbon batteries have the following advantages: first, they can be charged quickly, increasing the charging speed by 8 times; The discharge power is increased by 3 times. Third, the cycle life is increased to 6 times, the cycle charge times up to 2000 times; Fourth, the cost performance is high, then the price of lead-acid battery has improved, but the life of recycling greatly improved; Fifth, the use of safe and stable, can be widely used in a variety of new energy and energy saving areas. In addition, lead-carbon batteries also play to the specific energy advantages of lead-acid batteries, and have very good charging and discharging performance - 90 minutes can be fully charged (lead-acid batteries if this charge, discharge, life is less than 30 times). In addition, the addition of carbon (graphene) prevents the negative electrode from being sulfurated, which improves one of the factors of battery failure.

What is the difference between lead-acid batteries and lead-carbon batteries

What are the advantages of lead-carbon batteries

Lead-carbon is a new type of super battery, battery is a lead-acid battery and supercapacitor combination: both played a supercapacitor moment both the advantages of large capacity rechargeable also played a lead-acid battery than energy advantage, and have very good charge-discharge performance - 90 minutes to charge (lead-acid battery if such a charge, discharge, life less than 30 times). In addition, the addition of carbon (graphene) prevents the negative electrode from being sulfurated, which improves a factor of past battery failure and prolongs the battery life. Lead-carbon battery is a mixture of asymmetric supercapacitor and lead-acid battery in internal parallel. As a new type of super battery, the lead-carbon battery is a kind of dual-function energy storage battery with both capacitive and battery characteristics. Therefore, both the ultracapacitor and the lead-acid battery can be fully charged in one hour. Has very good charging and discharging performance. Because of the use of lead-carbon technology, lead-carbon battery performance is far better than the traditional lead-acid battery, can be used in new energy vehicles, such as hybrid electric vehicles, electric bicycles, and other fields; It can also be used in the field of new energy storage, such as wind power storage. Lead-carbon battery has the advantages of low price and mature industrial manufacturing base similar to a traditional lead-acid battery and has strong competitive advantages in various application fields.

What is the difference between lead-acid batteries and lead-carbon batteries

The hybrid technology, which can quickly output and input charge during acceleration and braking, is particularly suited to the "stop and start" system of micro-hybrids. Lead-carbon battery can improve the power of the original lead-acid battery and prolong its service life.

Lead-carbon battery characteristics:

Technical advantages

One is fast charging, improve the charging speed 8 times; The discharge power is increased by 3 times. Third, the cycle life is increased to 6 times, the cycle charge times up to 2000 times; Fourth, the cost performance is high than the price of lead-acid battery has improved, but the life of recycling greatly improved; Fifth, the use of safe and stable, can be widely used in a variety of new energy and energy saving areas. In addition, lead-carbon batteries also play to the specific energy advantages of lead-acid batteries, and have very good charging and discharging performance - 90 minutes can be fully charged (lead-acid batteries if this charge, discharge, life is less than 30 times). In addition, the addition of carbon (graphene) prevents the negative electrode from being sulfurated, which improves one of the factors of battery failure.

1. The positive and negative lead paste adopts unique formula and optimized curing process. The positive active material has a strong anti-softening ability, good deep cycle life and high utilization rate of active material. The negative lead paste has a strong resistance to vulcanization, low capacity attenuation and good start-up performance at low temperature.

2. Positive electrode grid adopts new special alloy and reasonable structure design, with good corrosion resistance, reasonable current distribution, close combination with the active material, high current performance and strong charging acceptance ability.

3, the use of new electrolyte additives, the battery hydrogen, oxygen overpotential, the battery is not easy to lose water

4, when the battery in frequent instantaneous large current charge and discharge work, mainly by the carbon material with capacitive characteristics to release or receive current, inhibit the lead-acid battery "negative sulfuric acid", effectively extend the battery life;

5. When the battery is operated with a long time and a small current, it is mainly operated by the negative electrode of sponge lead, which continuously provides energy;

6. The high carbon content of the lead-carbon super composite electrode makes the electrode have better low-temperature start-up ability, charging and receiving the ability and high-current charge-discharge performance than the traditional lead-acid battery.

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