PRODUCTS & SERVICES
Battery pack test safety
A recently introduced regenerative battery pack test system is helping to ensure safe and
responsive testing of increasing higher power density, while also meeting industry standards
As market demand for higher
power density increases, it
has become critical for battery test
equipment to mitigate safety risks
by providing safe and responsive
protection during testing.
Real-time monitoring and auto
protection mechanisms are features
that allow for safe testing of higher
density battery packs.
The model 17040 high power
regenerative battery pack test
system recently introduced by
Chroma supports three layers of
automated real-time monitoring
and protection, as well as meets
the dynamic fast response test
standards for battery pack testing.
The first layer of auto protection:
downloads the charge or discharge
test sequences to the hardware’s
protection and cut-o settings in
order to prevent any charging or
discharging errors in the event
the computer switches o .
The second layer of protection:
reads and analyses parameter
data received from a BMS (battery
management system) or data
logger, defines the data in the
protection and cut-o settings,
and provides real time monitoring
of the battery pack’s internal status.
The third layer of protection:
actively triggers the external
protection hardware that measures
the voltage and/or temperature of
the battery pack and switches o
the output main contactor to avoid
damage to the battery pack or
injury to users if the first and
second layer of protection fails.
Moreover, real-time data
feedback from the BMS can modify
test conditions immediately to
meet the battery pack’s dynamic
fast response test standards.
In the last few years, Chroma
ATE has been extremely active
in the development of optimal test
solutions for battery cells, battery
186 // July 2019 // www.electrichybridvehicletechnology.com
Three layers of
is provided by the
17040 test system in
modules, and battery packs. With
over 30 years of experience in test
and measurement instrumentation,
Chroma is able to provide a wide
variety of test solutions for power
and storage batteries.
These include regenerative
battery pack test systems for
battery cells, battery modules,
and battery packs; BMS test
systems; battery pack EOL auto
test systems; battery simulators;
and super capacitors.
These solutions are in use
worldwide by manufacturers
and third-party laboratories.
The 17040 test
in fi ve different
from 60kW up
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KEY FEATURES OF THE
17040 TEST SYSTEM:
1. Max. output power range:
2. Max. voltage/current output spec.: 1000V
/ 750A. Full power or full current output
when voltage >700V.
3. Measurement accuracy <0.05%FS.
Voltage/current auto range function with
test accuracy higher than standard.
4. Fast current slew rate (10% to +90%):
<2msec, fast charging/discharging
switching time (-90% to +90%): <5msec
5. Quadratic integral equations implemented
in firmware with high sampling rate (50kHz)
to increase the accuracy of capacity
calculation for dynamic testing.
6. Fastest test report data sampling rate: 10ms
(Waveform mode: 1ms)
7. Energy regenerative function, efficiency >
90%, PF > 0.95, THD <5%
8. Uses SiC MOSFET to increase switching
frequency, reduce equipment temperature
rise, extend the equipment lifespan, and
improve accuracy and stability.
9. Support simultaneous battery charge/
discharge and battery simulator function for
users to switch freely.
10. Compliance with CE mark testing and