What is important causes of UPS power lead-acid battery damage?

2022/04/08

  Author :Iflowpower – Portable Power Station Supplier

The electrolyte in the lead-acid battery is valuable to the blood in the human body. Once the electrolyte disappears, it means that the battery is scrapped. Electrolyte is composed of dilute sulfuric acid and water.

During the charging process, it is difficult to prevent loss of water, the charging method is different, and the water loss is different. Ordinary three-stage charging mode, water loss during charging is twice as much as intelligent pulse mode! In addition to the natural life of the battery, there is a loss of life: a single battery over 90 grams of moisture loss, battery scrap. At room temperature (25 ° C), ordinary charger is about 0.

25 grams, and the intelligent charging pulse is 0.12 grams. Under high temperature (35 ° C), universal charger loses 0.

5 grams of water, intelligent charging pulse is 0.23 grams. Click here to calculate, the ordinary charger After 250 water charge drying cycles, the new three-phase pulse in the water circulation after 600 cycles will be charged.

Therefore, the intelligent pulse can extend the battery life more than double. Lead acid battery is the biggest problem during charging. According to American scientists (j.

a.mas), the causes and regularities of gas release during charging of lead-acid batteries, during charging, the charging current exceeds the critical air discharge curve can only cause the battery to react with water. And warmed, no new battery capacity floating charging stage, the charging voltage retains the floating voltage; the first phase of the ordinary three-phase charging is constant current charging, it is important to consider the circuit design more convenient, not the best battery performance design.

According to the process of charge the gas in the lead-acid battery, the general gas release process in the three-phase charging process is as follows: the last cycle of constant current charging and the precharge of constant voltage charging, the current exceeds the evolution range of the critical gas, resulting in the gas of the battery Release, leading to life. Currents that exceed the range of critical gas release can only result in elevation of the battery, without conversion to battery energy, thereby reducing charging efficiency. Workaround: Pulse Solve the stage of intelligent pulse constant speed than the water loss problem is shortened than the constant current + constant pressure stage of the ordinary charger, and this hour of high pressure charging is a key moment of moisture distribution.

On the basis of opening the voltage parameter, the intelligent pulse converts the light into a smart pulse is very accurate, and the ordinary charger is indicator based on current parameters, once the battery is vulcanized, the internal resistance increases, the charging current is also increased, it is easy to cause High pressure segments are charged for a long time, accelerate hydrolysis. 2 Analysis: The cause of lead-acid battery curing is overcharged and charged in the charging process, and the use of large current discharges, it is easy to cause battery curing. Its appearance is: a lamp, a full charge, called battery fake damage.

The sulfate sulfate is attached to the plate, reducing the reaction area of ​​the electrolyte and the plate, and the battery capacity is rapidly decreased. Differentiation will add battery curing; vulcanization will add a battery's loss of water, which is easy to form a vicious circle. Solution: Intelligent pulse solution curing intelligence pulse uses intelligent pulse spikes to break the crystal nuclei of the lead, which is difficult to form sulfate.

Intelligent pulse charger: 1 constant power, 2 intelligent pulse, 3 drip irrigation ordinary three: 1 constant current, 2 constant pressure, 3 floating 3 analysis: lead-acid battery is not balanced a battery from three to four. Due to the manufacturing process, the absolute balance of each battery cannot be implemented. The average current of the ordinary charger first charges with a small capacity unit battery to form overcharging.

When the battery is discharged, the small capacity battery is first discharged, and over-discharge is formed. Long-term vicious circle, let the entire battery have a single backward, let the entire battery scrapped. The three-level charger floats, small current 500mA, the purpose is compensated to charge, so that the battery is full.

But it also brings two sub-uses: (1) full of electricity, excessive current, power conversion to heat, water decomposition, accelerate moisture distribution; (2) Small current charging, causing large current bifurcation, easy to cause battery Group imbalance. Workaround: Intelligent pulse solves the battery unbalanced program smart pulsating water loss is one-third of the ordinary charger, less water loss, small battery voltage difference; on the other hand, the water loss is poor, the battery voltage difference. With the increase in the loss of water, the vulcanization will increase, and the general charger does not eliminate vulcanization function, so the battery pack is imbalance.

Intelligent pulse charging, less water loss, battery voltage difference, after the battery is cured, the pulse can be removed, so that the entire set of batteries tend to balance. Intelligent pulse constant power level large current, use is: 1, fast charging, save charging time; 2, start battery board eliminate battery passivation phenomenon, restore battery capacity, so that the battery capacity tends to balance. In order to eliminate the influence of the current bifurcation, the battery is full of charging.

After full, it is automatically closed, reducing water decomposition, keeping battery balance. 4 analysis: Lead-acid battery thermal out-control problem battery deformation is not a sudden, often a process. When the battery is charged to 80% of the capacity, enter the high pressure charging area.

At this time, the oxygen is first precipitated on the positive electrode plate, and the oxygen reaches the negative plate through the holes on the diaphragm. The oxygen resuscitation is carried out on the negative plate: 2Pb + O2 (oxygen) = 2PBO + Q (heating); PBO + H2SO4 = PBSO4 + H2O + Q (heat). When the reaction reaches 90%, the rate of oxygen has increased, and hydrogen is started.

The new growth of a large amount of gas causes the internal pressure of the battery to exceed the valve pressure, the safety valve is opened, the gas escapes, and finally lost moisture. 2H2O = 2H2↑+ O2↑. As the number of battery cycles, the water gradually decreases, the battery appears as follows: the oxygen passage is smooth, and the positive oxidation of the channel is very easy to reach; the heat capacity is reduced, the battery heat capacity is the largest, the water capacity is large, the battery heat capacity is greatly reduced.

The heat temperature in the battery rapidly increases; due to the contraction of the ultrafine glass fiber separator in the water supply battery, the adhesion of the positive and negative plate is deteriorated, the internal resistance increases, and the heat is added during charge and discharge. After passing through the above process, the heat in the battery can only pass the heat of the battery, such as heat generation, that is, the temperature rise. The temperature rises, the evolution of the battery is lowered, and the amount of gas release is added.

A large amount of positive electrode oxidation reacts through the surface of the negative electrode, and a large amount of heat is emitted, and the temperature rapidly is raised to form a malignant cycle, that is, the so-called thermal out of control.

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