Causes and treatment of vulcanization phenomenon of forklift battery

著者：Iflowpower – Lieferant von tragbaren Kraftwerken

Let's first understand the working principle and reaction process of the lead-acid battery, from the above chemical reaction equation, we can see that the lead-acid battery is reacted with sulfuric acid during discharge, and the lead of sulfate and Water, electric energy during the reaction. In the process of charging, lead will reduce the lead in lead. However, if the reason such as charging, the lead in which the lead in sulfate cannot be completely reduced to lead, and more and more crystalline sulfate is accumulated on the battery negative plate, commonly known as vulcanization.

There may be a few of the cases of vulcanization: 1, the factory before the factory is charged is not good, and the long-term idle battery is not regularly charged; See the incomplete user of the charging process) 3, the battery is over-discharge, the battery cannot prevent over-discharge generation; 4, no timely charge after the battery is discharged or the charge is incomplete; 3. Lead raw material is not high, resulting in low purity The battery self-discharge or even over-discharge is severe; Central sulfuric acid lead into a crystal, these crystals are frozen during charging, and ordinary charging current cannot open these crystals. So that the electric energy charged into the battery cannot be effectively converted into chemical energy storage.

This makes the capacity of the battery continue to fall. The time of use of electric forklifts will be further shortened. Why is the vulcanized battery performance? The initial stage of lead-acid battery vulcanization is battery capacity attenuation, and the actual discharge capacity after the battery is filled with electricity, and the user feels less and less.

During the charging process, the charging time is shortened, the battery is very fast full. When charging is fast, the battery is so fast, and the battery is severe during the charging process. In the later stage, there will be a significant drum and other phenomena on the panel around the battery positive column.

If you don't solve the problem in time, what is bad consequences? If the problem of vulcanization, if it is not solved in time, the capacity of the battery will continue to attenuate; the user feels that the battery will be added, and the number of times the battery is randomly charged; the number of unsaturated charging, the more easily accelerate the vulcanization of the battery, this is Form a vicious circle. Most of the charging machines in the market cannot be identified by the vulcanization of the battery. The charger is fully charged for the battery to be fully charged.

According to the conservation of energy conservation, if the electric energy of the input battery cannot be completely converted into chemical energy, it will be transmitted into other energy forms. Usually manifested as a large amount of electrolyte water, and the battery is severe. How to prevent the vulcanization of lead-acid batteries from? 1.

Select the appropriate battery capacity for the electric forklift to ensure that the electric forklift can meet the working hours of the user's requirements, preventing frequent charging of the battery; Battery charging time and process must be complete. At present, advanced high-frequency chargers can match the charging curve of the battery, and the user is guaranteed by the manufacturer to ensure the charging time of the battery. 4, often check the battery electrolyte liquid surface, keep the liquid level above the plate.

Process method of vulcanized battery 1. The usual method is to set the total amount of charge of charging to 300% - 400% of the maintenance battery capacity (that is, the three charge two discharges, or four charge three discharge), energy consumption is very high and strong In the process, it will be battery heating. It is generally arranged under the conditions of circulating cooling water, otherwise, there will be a large amount of active substances to fall off on high-temperature flushing battery pole plates.

The desulfurization machine generally adopted this method is a large cabinet, the volume is large, the cost is high, and it has three phases 380V industrial electricity. At the same time, the level of the operator is high, and the temperature changes in the battery are monitored in real time, and the current and voltage are adjusted in time with temperature changes. 2, small current recovery method now many new high-frequency chargers can make the charger set a lot of parameters to ensure that 100% suitable for batteries, are not limited by battery types, and many security principles can also be used to set up programming.

Use high-voltage low current on the special effects of crystals, slowly stimulate, combined with intelligent constant voltage constant current automatic switching, the effect is significant and no counted; high-frequency charger is universally characterized, lightweight, easy to carry. As long as the ordinary 50Hz / 220V single-phase alternating current, the basic principle of high-frequency charger can be operated, and the start stage is used to convert the AC voltage to DC voltage using high-frequency technologies. High frequency switching transistors receive DC power and generate pulse voltages up to 50-100 kHz.

The first advantage is that the high-frequency transformer of the conversion voltage can have lighter weight, smaller volume and higher efficiency. When the voltage passes the second stage rectifier and the second level filter, the microprocessor automatically performs the target value and the actual value according to the relevant charging parameters (especially for the main supply voltage). Check and correction, usually control circuit (optical coupler) will finally transmit the correct value to the controller of high frequency switching transistors.

This process guarantees the efficiency of the charging process. Small current desulfurization recovery method application example conclusion: If vulcanization is chronic diseases that the battery is not smooth, blood and blood is accumulated, then slow disease needs to be slow. The traditional desulfurization method is like a fire boiled porridge, but the fire is too fierce not only to overflow the porridge soup, but it is easy to make it blur; and the high-frequency charger's small current recovery law is like a small fire slow stew, just right.

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