SunArk Brand 12V 150Ah Deep Cycle Lead Carbon Battery Energy Storage

The production of lead-carbon batteries involves several key steps that integrate traditional lead-acid battery manufacturing techniques with advanced carbon material applications. Here's an overview of the process:

1. Raw Materials Preparation

• Lead Materials: Pure lead and lead alloys (e.g., lead-antimony, lead-calcium) are used for grids and active material.
• Carbon Materials: High-performance carbon (e.g., activated carbon, graphite, graphene) is prepared for mixing into the negative electrode to enhance charge acceptance and reduce sulfation.

2. Grid Manufacturing

• Casting or Rolling: Grids are made by casting molten lead or rolling and expanding lead sheets.
• Grid Design: Optimized grid designs ensure efficient current distribution and durability.

3. Paste Preparation

• Positive Paste: A mix of lead oxide, water, sulfuric acid, and additives is prepared for the positive electrode.
• Negative Paste with Carbon: For the negative electrode, lead oxide is mixed with carbon additives, water, and sulfuric acid. The carbon helps improve cycle life and charge acceptance.

4. Plate Production

• Pasting: The prepared pastes are applied to the grids.
• Curing: Pasted plates are cured in a controlled environment to ensure proper chemical bonding and strength.
• Formation of Active Materials: Plates are chemically treated to convert lead oxides into active lead compounds (lead dioxide for positives and spongy lead for negatives).

5. Battery Assembly

• Separators: Acid-resistant separators are placed between the positive and negative plates to prevent short-circuiting while allowing ion flow.
• Stacking: The plates are stacked alternately in cells.
• Container Filling: Assembled plates are placed into durable, acid-resistant containers.

6. Electrolyte Filling

• Sulfuric acid electrolyte is added. The specific gravity of the electrolyte is tailored to the battery's application.
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• 7. Formation Process

  • Initial Charging: Batteries undergo an initial charging process to activate the materials fully.
  • Electrochemical Activation: This step forms the desired lead dioxide (positive plate) and spongy lead (negative plate with integrated carbon).

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  8. Quality Control and Testing

  • Batteries are tested for capacity, voltage, internal resistance, and durability.
  • Leak tests and safety tests are conducted to ensure reliability.

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  9. Sealing and Finishing

  • Battery cases are sealed.
  • Labels and terminals are attached, and the final product is packaged.

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  10. Recycling Considerations

  • Lead-carbon batteries are designed to be recyclable, with components like lead, carbon, and plastic recoverable through environmentally friendly processes.

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  The addition of carbon to the negative electrode is the defining innovation in lead-carbon batteries, enhancing their performance, especially in applications requiring frequent cycling and partial state-of-charge (PSoC) operations, such as renewable energy systems and hybrid vehicles.

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