Nickel-cadmium batteries: device, recovery. How to charge a nickel cadmium battery?
Today, one of the most popular types of energy replenishment of household appliances are nickel-cadmium batteries. This is a fairly simple to operate device that, if properly handled, will last a fairly long period of time. How to properly handle nickel-cadmium batteries should be considered in more detail.
Nickel-cadmium battery is designed so that with low internal resistance, it can give a sufficiently large current. Such batteries can withstand even a short circuit.
Accumulators of the type presented can easily withstand long loads. When the ambient temperature decreases, their performance practically does not change.
Nickel-cadmium batteries are inferior to other types in the tank. However, their high efficiency makes the batteries one of the most popular and sought after in the field of portable technology.
For devices with electric motors that consume large currents, the use of chargers such as nickel-cadmium batteries is simply indispensable.
The discharge currents on which they are used are in the range of 20-40 A. The maximum load for NiCd-batteries is 70 A.
The presented devices have several advantages. They are capable of operating in a wide range of discharge and charge currents, as well as temperatures.
Nickel-cadmium-type batteries can be charged at low temperatures, which is explained by high load capacity. They are not demanding on the type of tightening device. This is a significant advantage. It separates the device from the mass of other varieties, since it is possible to charge a nickel-cadmium battery in any conditions. It is resistant to mechanical loads, fireproof. Nickel-cadmium batteries have more than 1000 charging cycles and have the ability to recover after lowering capacity.
Low cost along with the listed advantages make NiCd-batteries very popular.
The device nickel-cadmium battery has several disadvantages. The main one is the "memory effect".During several charge-discharge cycles, the surface structure of the electrodes changes. In this case, chemical compounds are formed in the separator, which will subsequently interfere with the discharge by small currents. This leads to memorizing the source of its incomplete discharge.
The charge of nickel-cadmium batteries the further, the more will lose its effectiveness. The source will have a lower capacity.
The disadvantage is also a high self-discharge during the first days to 10% after charging. The minus can also be considered large dimensions.
To understand how to charge nickel-cadmium batteries, you should consider a number of features of this process.
Fast charging mode for the presented power sources is preferable to slow. Pulse capacity replenishment is better for them than direct current.
It is recommended to perform device recovery.Nickel-cadmium batteries require this. How to charge them with a similar method, manufacturers consider the corresponding devices. Reversible charge accelerates the process due to the recombination of gases released during its implementation.
The presented technique for recovering such batteries makes it possible to increase the service life by up to 15%. How to charge a nickel cadmium battery? There is a whole technology. Some users, in order to increase the efficiency of the power source, use fast charging followed by refueling with weak currents. This allows you to more densely fill the battery.
Storage and disposal
Store submitted batteries in a discharged state. There are chargers in which the discharge function is provided. If there is none, before storage, nickel-cadmium batteries are emptied with an incandescent lamp with a permissible current of 3-20 A. The battery is connected to it and waited until the coil begins to redden.
This procedure will allow you to store the device for quite a long time. Moreover, environmental conditions, temperature drops will not have an impact on the device.
If you want to dispose of the presented type of batteries, you should give them to a special point of reception of such devices. In all developed countries they are. This is due to the presence of cadmium in the battery. By its toxicity, it is comparable to mercury.
Understanding the technology of how to charge a nickel-cadmium battery, store and dispose of it, you can not doubt the safety and durability of this power source. It does not harm the environment and human health in the responsible disposal of batteries.
Nickel-cadmium batteries are the only type of such devices that need to be restored.
Periodic discharge-charge cycle will increase the battery life. This should not be done too often, but from time to time it is simply necessary.
For recovery, there are two types of devices. The first is called a reverse-pulse charger with a different duration time. This is a very effective device, but difficult and expensive. Recovering Ni-Cd batteries can be performed with a simpler device. It performs a discharge-charge cycle automatically.Such a device is cheaper, more convenient and allows you to charge 2-4 batteries at once.
To carry out the process it is necessary to insert batteries into the equipment cassette. Using the switch sets the number of batteries. Turning on the instrument will activate the indicator. Red is charging and yellow is charging. The green light of the termination alert indicator. Discharge batteries forcibly. To do this, the device must switch a certain lever. After the end of the discharge, the device will continue the charging process automatically.
After reviewing the main characteristics of a power source such as nickel-cadmium batteries, you can properly operate them. By adhering to the manufacturer’s instructions, by regularly performing battery recovery, you can significantly extend their service life. Properly disposing of the presented device, it will be enough just to protect yourself, other people and the environment as a whole from the toxic effects of cadmium.