Li-Ion-Technology
Li-Ion rechargeable batteries have excellent energy attributes and characteristics and are therefore the power source for the future.
They have an energy density twice as high as NiMH technology and a very low self discharge rate. So they are a perfect energy source for the field of mobile energy.
Some specific safety characteristics need to be considered when using Li-Ion technology.
A short-circuited cell can heat to a critical temperature, which may result in self destruction. Total discharge of a cell will also reduce the product lifetime. To avoid these situations Li-Ion batteries usually incorporate an electronic protection circuit board.
It should also be noted that because of the very low self discharge rate, a trickle charge current is not required and may actually reduce the product lifetime.
ANSMANN Li-Ion chargers are designed to take care of all these important safety requirements.
CCCV Technology
ANSMANN standard chargers mainly use CCCV technology for charging Li-Ion batteries (constant current constant voltage).
Until the cells reach their end charging voltage they are charged with a constant current, after which they are charged with a constant voltage. During the constant voltage phase, the current decreases to a pre-determined level, at which the charging process is stopped.
This ensures that the cells will be charged to their optimum capacity without the possibility of overcharging. There is no trickle charging as this reduces product lifetime.
ANSMANN provides a wide range of chargers for Li-Ion and Li-Polymer batteries. Customised solutions can be designed to incorporate the charging PCB into the customer’s own product. Custom charging cradles with integrated charging electronics can also be supplied. ANSMANN provides a complete service including the charging PCB and all the mechanical tooling so that the complete system is controlled as one totally managed project.
