What Is a Battery Case?
A battery case is a container holding the electrolyte in storage.
It plays a key role in storing electrical energy with electrode plates, separators, and other components. In rechargeable batteries such as lead-acid batteries and nickel-metal hydride batteries, chemical reactions caused by the electrolyte enable charge and discharge. The battery case prevents the electrolyte from leaking and protects it from shocks and temperature changes during use.
Materials that are resistant to deterioration from acidic or alkaline electrolytes are typically used. For example, polypropylene is often used in lead-acid batteries due to its excellent acid resistance. Battery cases are also designed with minimal joints to reduce the risk of damage. The interior includes partitions and reinforcement to regulate electrolyte flow and reduce vibration, ensuring stable battery performance.
Uses of Battery Case
Battery cases are used in the following applications:
1. Mobility
Battery cases are used in lead-acid batteries for automobiles, industrial vehicles, and ships. These batteries must provide a stable and continuous power supply for starting engines and powering lights. Since vehicles are subject to vibration and heat, battery cases must be strong and airtight to support long-term use.
2. Emergency Power Supply
Battery cases are also used in emergency power supplies in buildings and communication facilities. To provide stable power during outages, the case must be made from chemically stable materials and have an easy-to-maintain structure. A durable battery case protects the internal environment and improves equipment reliability.
3. Renewable Energy
Battery cases are used to store electricity generated from solar, wind, and other renewable energy sources. Because energy must be stored and supplied as needed, durability and safety are critical. Properly designed battery cases suppress deterioration from repeated charging and discharging, enabling efficient energy use. The choice of material and shape depends on the scale and environment, from residential systems to large-scale facilities.