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release time:2024-11-28 Hits: Popular:AG11 battery
Talking about the density inspection method of 6F22 carbon battery
The main power of electric forklifts comes from the battery pack. Since 6F22 carbon battery are water-filled batteries, they need to be replenished with water and tested for density. Let's briefly talk about the precautions for charging and electrolyte density to avoid the disadvantages of large charging current or forgetting to add water. The electrolyte level in each cell of the forklift battery should be 10-15mm higher than the plate. Maintaining the electrolyte level in each cell of the battery is the most basic requirement for extending the service life of the battery. The method to check the electrolyte level is: unscrew the filling port cover, insert a glass tube with an inner diameter of about 7mm vertically into the filling port until it touches the upper edge of the plate, then press the upper end of the glass tube with your thumb, clamp the glass tube with your index finger and ring finger, and gently lift it out. The height of the electrolyte in the glass tube is the height of the electrolyte plane in the battery above the plate, which should be 10-15mm. After the inspection, finally put the electrolyte into the original cell battery.
If the battery electrolyte level is too low after inspection, distilled water or battery supplement liquid sold on the market should be added in time. It is not allowed to add water that does not meet the requirements, such as tap water, river water, well water, etc., to avoid mixing impurities and causing self-discharge failure; do not add standard electrolyte, otherwise, the electrolyte concentration will increase and the battery life will be shortened.
Since the higher the density of the forklift battery electrolyte, the lower the freezing point, the driver can choose the appropriate electrolyte density according to the local minimum temperature in winter. Generally, when the minimum temperature is 0℃, choose an electrolyte with a density of 1.26g/cm3; if the ambient temperature in the northern region drops by 10℃, the selected electrolyte must be increased by 0.01 g/cm3.
It is strictly forbidden to add distilled water after the vehicle is collected in winter to prevent the newly added distilled water on the upper part of the plate from being fully mixed with sulfuric acid and freezing, which will crack the battery shell.
In 6F22 carbon battery, internal combustion forklifts occupy a small part of the starting battery. The density of the battery electrolyte is measured regularly, which should be around 1.23g/cm3 normally (except for maintenance-free batteries).
The method for measuring the electrolyte density is: unscrew the caps of the battery filling ports, and use a density meter to suck out the electrolyte from the filling ports until the float of the density meter floats up.
When the density meter is raised to the level of the eye, observe the reading to ensure the accuracy of the reading. The density of the battery electrolyte varies with the degree of battery charging and discharging. The degree of decrease in the electrolyte density is a manifestation of the degree of battery discharge. Measuring the electrolyte density in each cell can understand the degree of battery discharge.
When the electrolyte density is lower than 1.23g/cm3 (15℃), the battery should be charged. The electrolyte density is measured at 15°C. If the temperature is lower than 15°C or higher than 15°C, a thermometer should be used to measure the actual temperature of the electrolyte to calculate the correction value of the electrolyte density. In addition, the electrolyte density should be adjusted according to the air temperature. The battery electrolyte density should be determined according to regional and seasonal conditions. Too high density will affect the battery life; too low density will easily cause the electrolyte to freeze in winter. The difference in electrolyte density of each cell of the same battery should not be greater than 0.01. If the electrolyte density of a cell drops too much, there may be a fault inside the cell. The cause should be found out and repaired.
Forklift battery charging process
1. Check before charging: whether the battery is intact, whether the wiring is intact, and open the gas cap. Do not open or remove the filling plug on the battery; Do not add liquid before or during charging; Smoking, sparks or open flames are strictly prohibited near the battery; The battery cannot be discharged at the same time during charging; Do not place metal tools on the battery during charging; Do not repair the battery during charging; The electrolyte temperature is lower than 55℃ during charging.
2. If it is a new battery, inject the electrolyte with a specific gravity of 1.26 into the battery after cooling to 30℃. The injection amount should be 10~20 mm higher than the protective plate. Wait for 6 hours and the liquid temperature drops below 35℃ before charging. The specific gravity of the electrolyte refers to 30℃. Different temperatures should be converted according to the following formula: D30℃=Dt+0.007(t-30℃)
3. The electrolyte temperature should not exceed 55℃ during charging, otherwise measures such as reducing the charging current, artificial cooling or suspending charging should be taken.
4. When the battery is charged to saturation, the voltage and electrolyte specific gravity basically do not rise within 2 to 3 hours, and a large number of bubbles emerge. The electrolyte specific gravity reaches 1.26 and the single cell voltage reaches 2.4V.
5. When the single cell voltage drops to 1.7V, the voltmeter voltage is 41V (driving load), and the electrolyte specific gravity drops to 1.18, charging should be carried out in time.
6. At the end of battery charging, use distilled water or dilute sulfuric acid with a specific gravity of 1.4 to adjust the electrolyte specific gravity to 1.26 and maintain a sufficient height. The voltage and electrolyte specific gravity should be recorded from beginning to end of battery charging. The record will help with battery maintenance and guarantee analysis.
7. Keep the battery away from fire and heat sources. After charging, cover the gas cap, wipe off the splashed electrolyte, keep the joints clean and dry, and apply vaseline. The battery must be hoisted outside the vehicle for flushing.
8. The battery charging environment must be well ventilated. In particular, forced exhaust must be provided around the vehicle for charging. The ventilation equipment in the battery charging room must be good, and the temperature should not be higher than 40℃. The air flow can be calculated to avoid the accumulation of hydrogen-oxygen mixed gas during battery charging and cause explosion. The following formula can be used for calculation:
Q=0.05×I×N (where Q: air flow,
I: charging current at the end of charging,
N: number of battery cells). The air flow in the charging room should be greater than the air flow in the calculation formula.
9. The initial and normal charging data of the battery can refer to the table below. (If the battery comes with an instruction manual, please follow the instruction manual) Safety Instructions for 6F22 carbon battery
I. Daily Inspection 1. Liquid level If the liquid level is lower than the rated level, the battery life will be shortened, and too little electrolyte will cause the battery to heat up and be damaged. Therefore, you must always pay attention to whether the electrolyte is sufficient.
2. Terminals, wires, and covers The battery terminal joints and the connection with the wires must be checked regularly for corrosion caused by oxidation, and the cover must be checked for deformation and heating.
3. Appearance A dirty battery surface will cause leakage. The battery surface should be kept clean and dry at all times.
2. Maintenance
1. Adding water Add distilled water according to the specified liquid level. Do not add too much distilled water to extend the interval between adding water. If you add too much water, the electrolyte will overflow and cause leakage.
2. Charging The battery will produce gas during the charging process. The charging place should be well ventilated and there should be no open flames around. At the same time, the oxygen and acidic gases produced during the charging process will affect the surrounding area. Unplugging the charging plug during charging will produce an arc. The charger can only be unplugged after it is turned off.
After charging, a lot of hydrogen is retained around the battery. No open flames are allowed. The cover on the battery should be opened for charging.
3. Repair of the terminal, wire, and cover must be performed by professional technicians designated by the manufacturer.
4. Cleaning If it is not too dirty, you can wipe it clean with a damp cloth. If it is very dirty, you should remove the battery from the vehicle, wash it with water, and let it dry naturally.
III. Storage
1. Storage location Do not short-circuit; short-circuiting due to rain may cause fire and may produce a small amount of hydrogen, so the battery must be stored in a ventilated and cool place.
2. Used batteries Used batteries still have electrical energy and should be stored according to the storage method of the battery in use.
IV. Operation of electrolyte
1. Check specific gravity Use a suction hydrometer to check the specific gravity. Do not let the electrolyte splash out during operation and wear protective equipment.
2. Operations other than inspection Consult professionals, especially when replenishing electrolyte (dilute sulfuric acid).
3. Electrolyte leakage If the electrolyte leaks due to overturning or damage of the battery, emergency treatment should be carried out immediately (refer to emergency treatment matters)
V. Operation of end-of-life batteries
1. Operation of end-of-life batteries When the battery is close to the end of its life, the electrolyte in the single cell decreases very quickly, and distilled water should be added every day.
2. Treatment of used batteries For used batteries, extract the electrolyte and disassemble the battery. You can discuss whether the battery manufacturer will recycle it.
VI. Emergency treatment
1. Electrolyte splashes on the skin. Rinse with plenty of water.
2. Electrolyte splashes on the eyes. Rinse with plenty of clean water and then receive treatment from a professional doctor. 3. Electrolyte splashes on clothes. Take off clothes immediately, rinse with water and then rinse with weak alkaline soap.
4. Electrolyte leakage
When the electrolyte leaks to the outside, immediately neutralize it with lime, strong carbonated soda or carbonated soda, etc., and rinse with plenty of water.
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