What are the steps of initial charge and initial charge of storage battery?

First, the initial charge current (Table 5-1) is charged to the electrolyte to release bubbles, and the single cell voltage rises to 2.2.4V. Then the current is reduced to 1/2 of the initial charge current, and then the initial charge is continued until the electrolyte release.

A severe bubbles than continuous 3 h) and voltage stable. All the charging time is about 45 ~ 65 h should be used in the process of charging the electrolyte temperature measured in current by half, stop charging or cooling method, to control the temperature of 35 to 40 ℃, when the initial charge, if the proportion of the electrolyte illegal, application of distilled water or electrolyte specific gravity of 1.4. Adjust the recharging after 2 h, until density conform to the rules. The new battery charge for the first time after the often short of capacity, should carry on the discharge cycle. When using a 20 HH discharge rate discharge (i.e. 1/20 rated capacity of discharge current until the single voltage to 1.75 V), and then add charging current (table 5-1) enough, after a charge and discharge cycle if the capacity is less than 90% of the rated capacity, should be for an additional charge and discharge cycle.

After a set of lead-acid batteries assembled, called early battery for the first time. Initial charge is the key work lead battery is directly related to the group is doing good and bad battery life and capacity, the work should refer to the instruction book storage battery factory into another, a set of lead-acid batteries use after a period of time off, and dry storage method store a few years later, he want to use it for the first time, charge is also called the initial charge.

Is the purpose of initial charge will be exposed to air for a long time in lead oxide generated by the cathode plate, into the electrolyte to make it become lead sulfate react with sulfuric acid, the lead sulfate reduction in the process of initial charge into velvet shape of lead. Because this kind of lead sulfate is more, so I need to charge over a long period of time.[1]

(1) requirements for the ac power

Battery charged groups in the early period, within 75 hours to ensure that the ac power supply don't ask, don't break. Especially in the boot charge cannot stop filling within 24 hours. Therefore requires at least two road mains or reliable mains weak all the way the machine of oil generating set. In and demanded that the voltage rating of 90-110% (342 ~ 418 v) changes in the scope. Wearing the right. Rectifier can work normally.

(2) the requirement of charging equipment

Rectifier of over-voltage and over-current protection, fuse, such as adjustments must be checked, a failure should be able to stop automatically, and an alarm signal. Manually and automatically adjusts the output is normal. Voltage steady flow to achieve indicators prescribed by the manufacturer. With automatic steady flow for a certain time of load test (not less than 2 hours), to ensure safety during charging. At the end of all power equipment installation work, after careful check the wiring is correct, good insulation, oil machine generator working properly to conduct initial charge work.

(3) the requirement of sulfuric acid, distilled water and the required number of calculations

Lead-acid batteries used by dilute sulphuric acid must be pure, it is made of pure sulfuric acid and distilled water (or pure water) made from mixing. The electro-hydraulic pure and impure, had a great influence on the life of the battery. Prone to natural discharge if containing impurities. Electro-hydraulic containing more than 5% of impurities, within 24 hours, it is possible to put the electricity. Especially the charging system works in battery harm is bigger, because it has no addition charge.

According to the initial charge records accumulated filling the battery power, should be 5 ~ 6 times the rated capacity, battery terminal voltage of each battery in 2.7 "- 2.Above 75 volts, electrolyte bubbles to remove at this time, the positive plate is dark brown, negative plate is light grey, and can obviously see the half of brown from the lead across the bridge, half is gray. Share after adjusted the voltage in three hours no longer rise has charged battery.

Chemical energy is converted into electrical energy device is called chemical battery, commonly referred to as "for the battery. After discharge, can make the internal active substances in charging way - to store the electric energy to chemical energy regeneration; When need to discharge to convert chemical energy to electrical energy again. Call this type of battery storage battery (Storage Battery), also known as the secondary battery.

So-called is chemical energy storage battery, a necessary release electricity an electrochemical device.

Battery (Storage Battery) is a kind of chemical energy directly into electrical energy device, is designed according to the rechargeable batteries, rechargeable by reversible chemical reactions, usually is refers to the lead-acid battery, it is one of the battery, belongs to the secondary battery. How it works: when charging use external power to make the internal active substances, to store the electric energy to chemical energy, need discharge to convert chemical energy to electrical energy output, such as mobile phone battery is commonly used in life.

Fill it with sponge lead lead substrate grid (body) is also called the grid as negative, fill lead dioxide lead substrate grid as the anode, and the density of 1.26-1.33 g/MLG/ml dilute sulphuric acid as electrolyte. Battery during discharge, the metal lead is negative, the oxidation reaction, generate the lead sulfate; Lead dioxide is positive, reduction reaction, generate lead sulfate. When used in dc rechargeable batteries, the poles producing elemental lead and lead dioxide respectively. Remove the power supply, it back to the front of the discharge state, form a chemical battery. Lead-acid batteries can be recharged, discharge, and its monomer voltage is 2 v, the battery is made up of one or more of the monomer battery pack, referred to as "battery, one of the most common is 6 v, there are other 2 v, 4 v, 8 v, 24 v battery. With such as the car battery (commonly known as battery) is 6 lead battery series into the 12 v battery pack.

Battery diagram

Battery diagram

For traditional dry lotus lead battery (such as car dry battery, dry lotus motorcycle battery, etc.) in use after period of time to add distilled water, keep the dilute sulphuric acid electrolyte density of 1.28 g/ml; For maintenance-free battery, the using until the termination of life are no longer need to add distilled water.

The chemical principle

The equation is as follows:

Overall reaction: the Pb (s) + PbO2 (s) + 2 - h2so4 (aq) reversible symbol 2 pbso4 (s) + 2 h2o (l)

Discharge: negative Pb (s) - 2 - + SO42 - (aq) = e PbSO4 (s)

PbO2 (s) + 2 e - + SO42 - (aq) + 4 h + (aq) = PbSO4 (s) + 2 h2o (l)

The total Pb (s) + PbO2 (s) + 2 - h2so4 (aq) = 2 pbso4 (s) + 2 h2o (l)

Electrolytic cell when charging

Cathode PbSO4 (s) + 2 e - = Pb (s) + SO42 - (aq)

Anode PbSO4 (s) + 2 h2o (l) - 2 e - = Pbo2 (s) + SO42 - (aq) + 4 h + (a

Note (charging cathode discharge cathode)

The physical form

Form the main ingredients of lead-acid batteries are as follows:

Lead oxide anode plate (. PbO2) - > active substances

Lead cathode plate (sponge. Pb) -- - > active substances

(dilute sulphuric acid electrolyte) - > (- H2SO4) sulfate + distilled water (H2O)

Battery shell and cover (PPABS flame retardant)

Isolation plate (AGM)

The relief valve

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