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Heinzinger electronic GmbH
Phone: +49 (0) 8031 2458 0
www.heinzinger.com
Anton-Jakob-Str. 4, 83026 Rosenheim
Fax: + 49 (0) 8031 2458 58
Germany
Page 102
ERS COMPACT
3.11.16
Battery test function
The purpose of the battery test function is to charge and discharge var-
ious battery types in industrial product tests or laboratory applications.
Besides separate modes for charging and discharging of a battery,
there is also a combination of both available, the so-called dynamic
test. This form of test flow is only available on the HMI.
Users programming the device in remote control can achieve a simi-
lar flow by configuring the charging test separately from the static or
dynamic discharge test and control everything accordingly.
There is a choice of modes:
Static discharge
(constant current),
Dynamic discharge
(pulsed current),
Static
charge
(constant current) and
Dynamic test
(flow of charge/discharge).
In
Static discharge
mode which by default runs in constant current (CC), the settings for power or resistance
can also let the device run the function in constant power (CP) or constant resistance (CR). Like with the normal
operation of the device the set values determine what regulation mode (CC, CP, CR) will be in effect. If, for exam
-
ple, CP operation is projected, the set value of current should be set to maximum and resistance mode should be
turned off, so that both don’t interfere. For a projected CR operation it’s similar. Current and power should then
be set to maximum.
For
Dynamic discharge
mode there is also a power setting, but it can’t be used to run the dynamic battery test
function in pulsed power mode or at least the result would not be as expected. It’s recommended to always adjust
the power value according to the test parameters, so it doesn’t interfere with the pulsed current.
When discharging with high currents and in dynamic mode, it may happen that the battery
voltage shortly drops below the U-DV threshold and the test will unintentionally stop. Here it’s
recommended to adjust U-DV accordingly.
Graphical depiction of both discharging modes:
U, I
t
Discharge current
Start
U-DV
Stop
U, I
t
Discharge current
Start
U-DV
Stop
Static discharge
Dynamic discharge
The
Static charge
basically follows the charging profile used for lead-acid batteries. The battery is charged with a
constant current until it reaches either a specified charging end voltage or a charging end time or when the charging
current falls below the specified charging end current threshold.
Graphical depiction of the static charging mode:
U, I
t
Charge current
Star t
Stop
The fourth mode is called
Dynamic test
and combines
Static discharge
with
Static charge
in one flow. The same
parameters for the single test parts are available, plus some extra for the flow. You can, for example, select what
comes first, charge or discharge. There is also an option to cycle the test, i. e. repeat 1 to 999 times or infinitely
and you can define a resting period which elapsed before the next cycle.