An OPzV battery (OpzS with valve regulation, gel type) is a type of valve-regulated lead-acid (VRLA) battery with a tubular plate design and gel electrolyte. These batteries are known for their reliability, long service life, and deep discharge capabilities.
- Positive Plates: Made from lead dioxide (PbO2), these plates have a tubular design which allows for a larger surface area and better electrolyte contact. This design enhances the battery’s performance and longevity.
- Negative Plates: These plates are flat and composed of spongy lead. The design helps to optimize the overall electrochemical reactions within the battery.
- Separators: Placed between the positive and negative plates, separators are made of microporous materials that prevent short circuits while allowing ionic conductivity. They help to maintain the physical separation of the plates.
- Electrolyte: Unlike traditional flooded lead-acid batteries, OPzV batteries use a gelled electrolyte made by adding silica to the sulfuric acid. The gelled electrolyte prevents spillage and minimizes the risk of leakage.
- Battery Container and Cover: Typically made from robust and corrosion-resistant materials like acrylonitrile butadiene styrene (ABS) or polypropylene. The container and cover protect the internal components and provide structural integrity.
- Safety Valve: A critical component in VRLA batteries, the safety valve regulates internal pressure and allows for the escape of excess gas produced during overcharging. This helps to prevent battery damage and ensures safe operation.
- Terminals: These provide the connection points for external circuits. They are usually made of lead or a lead alloy and are designed to ensure a secure and stable electrical connection.
- Vents: These allow for the release of gases generated during the battery’s operation, especially during overcharging. The vents are designed to minimize electrolyte loss and maintain battery integrity.
- Active Material: The paste applied to the grids of both the positive and negative plates. In positive plates, it’s typically lead dioxide, while in negative plates, it’s spongy lead. The active material is where the chemical reactions that store and release energy occur.
- Pole Bridges: Connect the cells in series within the battery, ensuring the appropriate voltage output. They are usually made of lead or lead alloys for their conductivity and durability.
These components work together to provide the OPzV battery with its high reliability, long cycle life, and low maintenance requirements.
