7
IPCS and fast charging
The BLUESHAPE CVTR2 charger features the highest charging
current for a Li-Ion charger in the broadcasting sector.
This results in currently the shortest possible battery charging time.
BLUESHAPE Li-Ion BV battery series allow fast charging due to
several intrinsic features such as pre-charge protection and cell
balancing; avoiding cell damage and life-cycle shortening, as
demonstrated by the life-cycle performances.
Additionally, the new CVTR2 charger supports and enhances these
features with IPCS, a 2-step Intelligent Pre-Charge System.
Since fast charging can damage cells if not properly applied,
especially with low voltage (discharged) cells, appropriate care must
be taken. The 2-step procedure implemented by IPCS, initially
boosts very low voltage cells to a state where charge can be applied
with a medium-low current without damage, then starts to charge
with a 300mA current for a while. Finally, when the pack reaches a
reasonable voltage state, it speed-up the charge process by going
to full throttle.
The operation implemented by IPCS is only applied if the prevailing
cells-state need it, and normally takes a few minutes, depending on
the state of discharge of the cells.
The operation implemented by IPCS is outlined in the chart below.
IPCS 2-step Intelligent Pre-charge System
11000
11500
12000
12500
13000
13500
0 3 5 8 10 13 15 18 20 23
Time (min)
Voltage (mV)
0
100
200
300
400
Current (mA)
CURRENT
OLTAGE
Step-1
Step-2
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