At present, the inner plate structure of traction forklift power battery is generally divided into tubular plates and paste plates. At present, foreign assembly lines mainly use skeleton (core) die-casting. Forklift maintenance of used batteries: Used batteries still contain electrical energy and should be stored according to the battery storage method used.
1. Material selection for positive and negative plates
The positive and negative plates of a traction forklift power battery are one of its most important internal components. These plates are usually made of materials with good electrical conductivity, such as lead, lead alloys, etc. The material selection of the positive plate and negative plate directly affects the performance and life of the traction forklift power battery.
Appearance of gel battery: A dirty battery surface will cause leakage. The battery surface should be kept clean and dry at all times. Unplugging the charging plug during forklift battery rental charging will cause arcing. Turn off the charger before unplugging the plug. After charging, a lot of hydrogen gas will remain around the battery. No open flame is allowed. The cover on the battery should be opened for charging.
Forklift battery tube anodes are manufactured without coating, and the active material enters the tube through a powder filler or paste extruder. Powder filling machine and paste extrusion machine are the main equipment for manufacturing tubular positive plates.
2. Structure of positive and negative plates
The positive plate is where the positive reaction occurs in the battery, and it is usually made of lead peroxide. Lead peroxide has high electrical conductivity and electrochemical activity, allowing the positive plate to participate in battery charge and discharge reactions more efficiently. The structure of the positive plate is not only related to the energy output of the battery, but also directly affects the cycle life and stability of the battery.
Relative to the positive plate, the negative plate is mainly composed of pure lead. Pure lead has good electrical conductivity and stability, and can provide reliable electron flow during the battery’s discharge process. The structure of the negative plate has an important impact on the cycle life and discharge performance of the battery.
The vibrating powder (granule) filling machine is used to fill lead powder (or granules) into tubes. Before filling the powder (granules), the powder is first mixed or granulated. Dry mix the lead powder and pore-forming agent (such as 3% charcoal powder and 41% magnesium sulfate) in a powder mixer and set aside. In order to reduce dust pollution, the lead powder is first „granulated“, such as adding CMC or other cat mixtures, the lead powder is made into a slurry, and then granulated in a granulator with a particle size of about 1 mm.
3. traction forklift power battery Function and structure of partitions
In traction forklift power batteries, separators are usually required between the positive and negative plates to prevent short circuits. The partition is made of some materials with good electrical insulation properties, such as rubber, polyethylene, etc. Its design and structure not only need to ensure the safe operation of the battery, but also need to have sufficient corrosion resistance to adapt to the acidic environment inside the battery.
There are various plate arrangements inside the traction forklift power battery, including batteries, battery packs, etc. In forklift power batteries, a plate battery design is usually used, with positive and negative plates arranged in layers, and a battery pack is constructed through connecting lines to provide the electrical energy required by the forklift.
At present, domestic companies in our country usually fill powder. Filling powder into tubes is a key information equipment for towing forklifts for battery technology manufacturing. According to different vibration system principles, powder filling machines are mainly divided into traditional mechanical structure vibration type (cam rotates), electromagnetic environment vibration type (electromagnet is on and off), pneumatic vibration (compression and air generates pulses), vibrating powder filling type ( Granule) machine, the vibration signal frequency of the workbench is about 200 times/min, the amplitude is about 3mm, the pneumatic vibration control frequency is about 200-400 times/min, and the air pressure is 0.4-0.66MPa.
The powder (pellet) filling machine can be designed according to social functions. It is divided into single-chip powder (granule) filling machine and multi-chip (box-type) powder (granule) filling machine.
4. The impact of technological innovation on plate structure
With the continuous advancement of science and technology, the research on the internal plate structure of forklift power batteries is also deepening. The application of new materials and the adoption of new processes provide more possibilities for improving battery performance and extending life. Technological innovation not only changes the internal structure of batteries, but also brings more opportunities for the efficient operation of forklift power systems.
The box type is to install a stack of multiple tubular plates in the mold and arrange them neatly in a sealed box. The box needs to be placed on the research vibration analysis work table. It can fill 10 or 20 pieces at a time. High efficiency, less pollution caused by dust, and residual powder can be effectively recycled.
Then it is slightly aged, put on the sleeve (or put on the row pipe) and then enters the gelatinizer. After gelatinization, it is squeezed into the tube, and the plastic preform (bottom of the tube) is pressed against the lower part of the tube, and then becomes a complete plate. . Finally, the surface of the board is cleaned and dried, which has a high degree of automation and high production efficiency. It mainly causes little environmental pollution and no flying dust.
The structure of the internal plates of the traction forklift power battery is a decisive factor in the performance of the entire battery. The material selection of the positive and negative plates, the design and arrangement of the separators and other aspects are closely related to the performance, life and safety of the battery. Through an in-depth understanding of the plate structure, we can better use technological means to improve the overall performance of the battery and provide more reliable power support for the efficient handling of forklifts. Technology interprets the core of power, and forklift power batteries will usher in a better future through continuous innovation.
