Battery Monitoring - Eltek Valere Minipack Quick Start Manual And Manual

Battery Monitoring

Battery Symmetry Connections
Smartpack based systems have many inputs — on the controller and on Battery Monitors
connected to the CAN bus — which are dedicated for battery symmetry measurements.
Controller's Battery Symmetry Connections ⎯ 48V
Each Smartpack controller is equipped with 8 battery symmetry inputs (on connectors CON4 and
CON3), enabling symmetry measurement of:
•
8 battery strings, using the Mid-Point Measurement Method
•
4 battery strings, using the more accurate Double Mid-Point Measurement Method
•
2 battery strings, using the even more accurate Block Measurement Method
You can implement any of these methods using one or two Battery Connection Kits and the
appropriate number of Battery Symmetry Kits, which contain a single wire with suitable cable lugs,
etc. Refer to the illustration on page 20.
Battery Symmetry
Mid-point Measurement
One measurement per string
Card, Art. 200576
Serial Switches
X:****
Set all 4
switches
OFF (up)
-
-
—
(-48V) Outer
Terminal
Block1
Intercell Links
Battery Symmetry
Double-point Measurement
Two measurements per string, from the
middle to the outer terminals
Card, Art. 200576
Serial Switches
X:****
Set all 4
switches ON
(down)
-
-
—
(-48V) Outer
Terminal
Block1
Intercell Links
Quick Start Guide Minipack PS System
2-1
+
+ - + - + - +
Block3 Block4
+
0V Outer
Terminal
Notice that, if you open the serial switches in
card, Art. 200576 ⎯ setting all to OFF (up) ⎯
you have to connect the + and – wires of every
symmetry input.
2-1 3
+ +
+ - + - + - +
Block3 Block4
+
0V Outer
Terminal
356808.103, 1v2-2008-10
Battery Symmetry
Block Measurement
Four measurements per string
(Serial measurement)
2-1
Card, Art. 200576
X:****
Serial Switches
Set all 4 switches
ON (down)
-
- +
—
(-48V) Outer
Terminal
Block1
Intercell Links
Battery Terminology
Battery Block, Battery String and Battery Bank
48V Battery Bank
Appendix
3 5 7
+ + + +
- + - + - +
Block3 Block4
+
0V Outer
Terminal
Battery
Block (12V)
Battery
String #1
(48V)Batt.
Battery
String #2
(48V)
17