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Battery manufacturing involves assembling anode and cathode, inserting a separator, applying seals, and creating a label. Different types of batteries have slightly different processes due to the materials and structure. Alkaline batteries use nickel-plated steel, porous separators, and brass and epoxy gaskets. The cathode forms a structural component known as the can cathode. The process involves degreasing and coating the cathode, adding cathodic substances, introducing a separator, pouring electrolyte solution, injecting anodic gel, placing the anode lead, and sealing the battery. Zinc-carbon and lithium batteries have slightly different processes.
The battery manufacturing process involves several key steps including assembling the anode and cathode, inserting a separator, applying seals and creating a label. Different types of batteries, such as alkaline, lithium, and carbon-zinc, will undergo a slightly different battery manufacturing process. This is due to the different nature of the materials and structure, both of which have a great impact on the manufacturing method of the battery.
Alkaline batteries are the most common and are often used in devices such as toys, calculators and tape recorders. Structural materials used in the alkaline battery manufacturing process include nickel-plated steel, a porous material for the separator, and brass and epoxy for the gaskets. In alkaline batteries, the cathode also forms a structural component of the battery, known as the can cathode, due to its cylindrical shape.
The first step is to degrease and coat the cathode to improve conductivity. Next, the actual cathodic substances are added, which include carbon powder and manganese dioxide powder, sometimes compressed into round blocks. A hollow and porous separator, often made of crossed paper, is introduced into the cylinder to keep the anodic and cathodic substances separate. The electrolyte solution is poured into the center of the separator or the separator is immersed in electrolyte before being inserted into the battery.
An anodic gel containing zinc suspended in an alkaline solution is injected into the cavity created by the separator to fill the cavity. The anode lead, also known as the current collector, is then placed at the end to complete the circuit. Finally, the battery is sealed with an epoxy material, brass nail or steel plate, completing the battery manufacturing process. Additional steps include applying a label to the surface of the battery and inspecting the battery for safety and effectiveness.
Other types of batteries have slightly different manufacturing processes. In zinc-carbon batteries, there is a zinc can that acts as an anode instead of a cathode. The separator and bottom paper are inserted first and then the cathode powder is poured. A carbon rod is then inserted to carry the current and the entire apparatus is encased in a resin tube before labeling. The lithium battery manufacturing process is also very similar to the alkaline process, but involves more stringent separation of the cathode and anode materials due to their higher reactivity.
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