Chapter 2 ___________________________________________________________ Product Overview
VAISALA_________________________________________________________________________ 7
CHAPTER 2
PRODUCT OVERVIEW
This chapter introduces the QBR101 Battery Regulator features and
advantages.
Introduction to QBR101 Battery Regulator
The QBR101 is a tiny charging and supervising module suitable for
both 12 V and 24 V batteries, either of lead-acid or nickel-cadmium
type. Together with a commercial mains power supply and/or solar
panels, it makes a modular Uninterruptible Power Supply (UPS),
configurable for various system applications. In case the input power
to the system fails, the QBR101 automatically switches to the backup
battery and continues feeding power without any interrupts on the
output line.
The input voltage for the QBR101 can be taken from a 15 V- 30 VDC
source. This may be, for example, an off-line SMPS or a solar panel.
In case of multiple input sources required, the QBR101 can accept
inputs from two solar panels and a DC power supply simultaneously.
In case the battery fails, for example, if one of its cells is short-
circuited, the QBR101still maintains the output current as long as
power is available from the DC power supply.
The QBR101 has three removable screw-terminal connectors X1, X2,
and X3 (see Figure 1 on page 8). X1 is intended for DC input from a
power supply and/or solar panel(s). X2 includes the battery
charge/discharge terminals and two DC output terminals:
DCout/Switch and DCout. X3 is reserved for various control
functions, like charging voltage adjustment, temperature
compensation, remote on/off control, low battery indication etc.
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