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Lithium-Polymer Cell Controller

Lithium-Polymer Cell Charge -& Discharge Controller

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12,00 € tax incl.

Model 1a

Availability:

248 items in stock


This single unit BMS device can be fitted directly to the terminals of all Lithium-Polymer cells (e.g. Kokam) up to 100AH. One controller is needed for each battery cell. Over-& Under Voltage levels are fixed at resp. 2,3V (under voltage level) & 4,28V (over voltage level). The controller consumes only 6 microAmps.

 

For use in conjunction with Lithium Polymer Batteries
Number of cells
1
Continuous current
max. 3.8A
Over Voltage level
4,25V
Under Voltage level
2,5V
Current consumption
6µA
Dimensions 14x11 mm
Weight 0.6g

Note: this unit has no balancing function,

for balancing units please refer to: http://www.e-transportation.eu/catalog/product.php?id_product=74

 

 

Principle of operation

 

Even a slight overcharge or deep discharge can lead to irreversible damage and in case of a significant overload, a dangerous situation can occur (i.e. fire hazard). For this kind of cells, preventive actions to protect against overcharging or deep discharge are necessary. This tiny controller protects a lithium battery during the charge -& discharge cycle.

 

Charge cycle:

It disconnects the battery cell from the charger if the cell voltage exceeds the critical level of 4.25V, thus preventing a dangerous overcharge situation. When the cell voltage falls below 4.05V, it will automatically switch back to connect to the charger.

 

Discharge cycle:

During discharge, the load gets disconnected, as soon as the cell voltage drops below 2.5V. As soon as it detects a charging current, the unit is set back again to normal operation.

 

Current:

 The maximum current is 3.8A, which is adequate for most applications. This little unit can be mounted directly to the cell and plays an active & smart role for cell protection. Idle power consumption is negligible; less than 6 µA.

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