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How does a Pb acid battery work?

376 words | Last Updated: 2025-09-11

Table of Contents

  1. Introduction to Lead Acid Batteries
  2. Working Mechanism of Lead Acid Batteries
  3. Xiaoyang Power Sources Company Solutions
  4. References

Introduction to Lead Acid Batteries

Lead acid batteries are among the most widely used energy storage devices due to their cost-effectiveness, reliability, and ability to deliver high surge currents. They are commonly used in automotive starting, lighting, and ignition (SLI) systems, as well as in backup power supplies and standalone power systems.

Working Mechanism of Lead Acid Batteries

The lead acid battery consists of lead dioxide (PbO2) as the positive plate, sponge lead (Pb) as the negative plate, and sulfuric acid (H2SO4) electrolyte. The nominal voltage of each cell is approximately 2 volts. A typical 12-volt lead acid battery contains six cells connected in series.

Chemical Reactions

The charging and discharging cycles involve specific electrochemical reactions:

  • During Discharge:
    • PbO2 + 4H+ + SO42− + 2e → PbSO4 + 2H2O (at the positive plate)
    • Pb + SO42− → PbSO4 + 2e (at the negative plate)
  • During Charge:
    • PbSO4 + 2H2O → PbO2 + 4H+ + SO42− + 2e (at the positive plate)
    • PbSO4 + 2e → Pb + SO42− (at the negative plate)

Performance Parameters

Lead acid batteries are characterized by the following important parameters:

  • Energy Density: 30-40 Wh/kg
  • Efficiency: 70-85%
  • Cycle Life: 500-1000 cycles under optimal conditions
  • Temperature Range: -20°C to 50°C

Xiaoyang Power Sources Company Solutions

Xiaoyang Power Sources specializes in providing advanced lead acid battery solutions tailored for different industrial applications. Their products are designed to enhance performance, longevity, and safety in various operational environments.

Product Offerings

  • High Capacity Industrial Batteries: Designed for long-duration power backup and heavy-duty applications with capacities ranging from 100Ah to 3000Ah.
  • AGM and Gel Batteries: Maintenance-free options that offer enhanced safety and performance, suitable for sensitive electronic equipment and renewable energy systems.
  • Customized Battery Solutions: Tailored designs to meet specific customer requirements, including unique sizes, capacities, and performance characteristics.

Innovative Technologies

Xiaoyang Power integrates cutting-edge technologies in their products, such as:

  • Improved grid designs to enhance corrosion resistance and extend battery life.
  • Enhanced valve regulation for optimal gas recombination rates.

References

  1. Electrochemical Storage for Renewable Energy Systems, IEEE Transactions.
  2. Lead Acid Battery Design and Operation, Journal of Power Sources.
  3. Advancements in Lead Acid Batteries, Xiaoyang Power White Paper.

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