More and more devices around us, working with battery. In particular, they are compact and portable mobile devices and systems, the Internet of Things. Battery power makes it easy to move the device. They can even hide in your pocket, because modern units are very small and are characterized by high power density. Unfortunately, in connection with the use of increasingly complex chemical units, their use has become extremely difficult. Modern batteries such as lithium-ion, for safe operation require special chargers and charge controllers.

Compact ICS charge controllers

Available in our store ICS charge controllers allow for the construction of the charger, particularly for lithium-ion batteries, which are currently the most popular on the market due to its high capacity and power density. Electrochemical cells that use lithium batteries such as lithium-ion and lithium-polymer, require special charging algorithms to obtain the optimal parameters of work. Failure to follow these procedures as well as exceeding the permissible parameters of the link, not only harmful to the battery, but dangerous. Overloaded the lithium-ion batteries can explode.

Requirements links lithium batteries during charging and operation

Given your parameters of lithium-ion batteries are very popular in electronics. Not interfere, with their acute requirements regarding the use of this type of links. First, the voltage of the element can never fall below the threshold given by the manufacturer. For a typical sensor the value is from 2.8 V to 3.0 V, depending on model. Discharging the battery below this limit may cause damage and loss of the tank. Similarly, the maximum voltage level is harmful and can lead to catastrophic accidents, including explosion or fire.

The procedure for charging Li-ion

Charging lithium-ion battery is a process of two steps, which is controlled by the charger. In the first stage, the managers are charged with direct current, is between 0.5 and 1 C (1 C is the current which provides the charge sensor to an hour for battery capacity of 2000 mAh a current of 1 C 2000 mA). This phase is executed at the time when the voltage at the element will be about 4.2 V. In the second phase, supported charger constant voltage is 4.2 V. the Current flowing through the sensor decreases. When the charge current drops to below 0.1 C, the battery is charged. Then the controller terminates the charging process.

Application circuits of chargers for rechargeable batteries

Often, the power of this system is quite separate lithium-ion batteries. Modern electronics are usually operated with a supply voltage equal to 3.3 V, which is lower than the nominal operating voltage of Li-ion is 3.6 V. this Means that system power from this battery is a fairly simple linear regulator or Converter step-down (buck voltage), in the case where we are interested in better performance. To get the full, integrated power system, such a set is enough to make a simple, combined charger. Because of this there is, for example, the need to remove the battery from the charger. Simply plug in your external power supply.