The lead acid battery plate pasting stage involves applying active material to the grid. The grid acts as both a mechanical support and an electrical conductor. This step creates the plate. The plate is the…
How it is Made: the Lead Acid Battery – Part 7 Plate Pasting
The lead acid battery plate pasting stage involves applying active material to the grid. The grid acts as both a mechanical support and an electrical conductor. This step creates the plate. The plate is the main component of a lead-acid battery.
There are two ways to combine grids and active material as necessary, a crucial step:
- Belt pasting pastes individual panels resulting from the grids’ melting process.
- In Drum pasting, expansion, punching, or continuous casting systems produce continuous strips of grids.
Lead Acid Battery Plate Pasting – Belt Paster
It has a cotton strip. This strip supports the grids when pasting. There is also a hopper. It comes with toothed and paddle rollers. These rollers feed the paste onto the grid, a key step in the lead acid battery plate pasting process.
A mechanical separator sets two grids in a straight line. It places them on a cotton belt, which moves them to the area where paste (active material) is applied. After that, they go to the transfer line.
The belt then goes through scraping, washing, and pressing areas. This process gets the belt ready for the next pasting cycle.
An automatic system feeds the hopper. It has level control and rotating rollers. This system doses the right amount of active material. The material is used on the grid below during the lead acid battery plate pasting stage.
This system works well with melted grids. It has a belt made of layered needled cotton. Even when the belt touches the paste, it hardly sticks to it.
Lead Acid Battery Plate Pasting – Drum Pasting Machine
In continuous strip grids, the active material is covered with paper. This is to handle the cutting process. It makes using a cotton belt unnecessary. This is because it helps prevent sticking. So, a surface-hardened steel drum is used instead. It lasts much longer. This means there’s no need to worry about belt wear costs in this lead acid battery plate pasting method.
The lead acid battery plate pasting machine will have a body made out of a steel drum. It will feature controlled speed. Additionally, it will have a hopper designed to measure out the active material. It will need drums to hold and spread the paste on the plate surfaces. First, a paper layer is placed on the drum. Additionally, the strip of grids moves under the hopper to get the right amount of paste. While moving at the drum’s speed, it goes under another rubber cylinder. This cylinder centers and presses the paper on the top side.
GRID STRIP DIVISION SYSTEM
The pasted grids are put into a machine. This machine has timing systems and cutting blades. It cuts the individual grids by slicing through their connection points. Basically, the machine has a bench for holding and supporting the cut grids.
Proper grid organization is crucial for lead acid battery plate pasting.
DRYING TUNNEL
After stacking, the plates quickly go through a special drying tunnel. This prevents them from sticking to each other. The tunnel heats the surfaces of the plates quickly. But, it keeps the core of the plates below 60 °C. Additionally, this process dries any paste residues on the tire surface that could cause sticking during lead-acid battery plate pasting.
STACKING SYSTEM
A stacker with suction picks up the plates from the drying tunnel. It separates the plates and straightens them at the edges. Then, it moves to the preparation area for packaging, an essential step. Here, two devices that can adjust their height pick up the plates. They stack the plates into packages. Additionally, the system gathers these packages and places them on a pallet.
A system requires a double amount of lowering devices. We use one to prepare the package and the other to unload and restore operations. At this point, the plates have a lead grid.
This grid offers mechanical support and helps with electron flow. Inside, there’s a mix of different materials (Pb, PbO, PbO2, PbSO4, H2SO4, H2O).
Also included are specific additives for either negative or positive plates. These components are crucial. They create the active material necessary for lead-acid battery plate pasting.
Additionally, to stay updated with the latest developments in STEM research, visit ENTECH Online. Basically, this is our digital magazine for science, technology, engineering, and mathematics. Furthermore, at ENTECH Online, you’ll find a wealth of information.
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Until 2023, Dr. Charudatta S Pathak held multiple academic positions, including lecturer, assistant professor, professor, dean, principal, director, and vice chancellor at public and private universities across India. From 2008 to 2010, he held the position of project lead in the CAE department at a European multinational corporation. Throughout his 28-year professional experience, he observed a requirement for reliable publications aimed at youngsters in grades 8 to 12, specifically for early-stage career planning. He initiated the establishment of ENTECH Digital Magazine, a complimentary periodical released on a monthly basis, accessible via stemconference.in and magzter.com. Teenagers with a keen interest in Science, Technology, Engineering, and Mathematics (STEM) and aspiring to pursue professional paths in these domains can consider reading ENTECH Digital Magazine.
