| |
| |
|
|
|
|
|
| |
|
|
| |
|
|
| |
|
|
| |
How to keep up when
measuring the Evolution of battery technology |
|
| |
 |
|
| |
|
|
| |
As a professional in battery development, it is
essential to perform cycling and stress testing
before installing batteries in electric vehicles
(EVs) or other products. Testing and monitoring
help ensure functionality, reliability, safety,
quality, cost, efficiency, and power quality.
In this blog post, we will provide
easy-to-understand tips on effectively measuring
the evolution of battery technology. |
|
| |
|
|
|
|
|
| |
|
|
| |
Perform Cycling and Stress Testing
Before batteries are installed in EVs or other
products, it’s important to perform cycling and
stress testing. Cycling tests involve repeatedly
charging and discharging the battery to assess
its performance, while stress testing checks the
battery’s response under extreme conditions,
such as high temperatures or heavy loads. These
tests help ensure optimal battery performance
and should be done throughout the value chain,
from the individual components to the complete
battery pack. Central data logging and control
of your climatic chamber, loads, and even
cameras help you detect fast when performance
losses occur or component breakage up to thermal
runaways happen.
Optimization of the Battery Management System
(BMS)
Optimizing the BMS is essential for better
performance and system lifetime. The BMS should
accurately measure the full current range, from
standby levels to hundreds of amps. A
high-quality analog-to-digital data acquisition
concept is crucial for quickly covering this
wide measurement range. BMS data validation and
hardware testing should be performed to ensure
safety margins for high C charge/discharge rates
are understood and maintained.
Full Data Access Across the System Lifetime
Full data access helps identify the root cause
of battery pack degradation and detect any
changes in temperature distribution. Access to
raw data allows you to spot trends and quickly
react to potential issues. Gantner supports all
leading protocols and is compatible with top
inverter suppliers, making remote monitoring and
control seamless.
Maintain Your Own Independent Track Record
An independent data set is essential for
tracking the BMS, battery behavior, and lifetime
performance. Regularly maintaining and updating
this data set ensures it accurately represents
the battery’s performance over time. It gives
insights on where to optimize algorithmsand
processes to maximize lifetime.
Further Risk Reduction and Insights with
Impedance Spectroscopy
Impedance spectroscopy offers additional
insights by non-destructively evaluating changes
and drifts in the chemical process and series
production. This technique can detect issues
caused by material layers, charge transfer,
diffusion effects, or electrolyte conductivity.
It helps you find the equivalent circuit and
understand process parameters through measurable
quantities. |
|
| |
|
|
|
|
|
| |
|
|
| |
Why Choose Gantner Instruments for Battery
Testing?
After understanding the importance of cycling
and stress testing, upgrading infrastructure,
and optimizing the Battery Management System
(BMS), you might wonder which company can
provide comprehensive battery testing solutions.
Gantner Instruments offers cost-effective test
and measurement solutions tailored for various
industries, such as electric and hybrid
vehicles, utility and renewable energy support,
stationary power, portable electronics, medical
tech, and telecommunications. Our commitment to
assisting customers in transitioning to a
sustainable future makes us an ideal choice for
all your battery testing needs. |
|
| |
|
|
| |
|
|
| |
Click to open the large image |
|
| |
|
|
| |
Comprehensive Battery Evaluation: Electrical,
Thermal, and Mechanical Testing
With Gantner Instruments, you can access testing
solutions that cover all development and
qualification steps: |
|
| |
|
|
| |
- Charge/discharge cycle testing: Evaluate the
battery’s lifespan by assessing its performance
after repeated charging and discharging cycles.
- Battery model development: Determine and predict
State of Charge (SoC) and State of Health (SoH),
conduct constant discharge testing, and analyze
charge/discharge rates and efficiency.
- Safety (Abuse) testing: Simulate various
environmental conditions and battery failure
scenarios to identify the limits of safe battery
operation.
- Performance testing: Our experts customize
testing programs to suit specific customer
requirements, such as testing battery efficiency
under different climatic conditions.
- Environmental and thermal testing: Assess the
quality and reliability of your battery by
conducting tests for vibration, shock, EMC,
thermal cycling, corrosion, dust, salt, and
humidity.
- Transport testing: Ensure safe transportation of
batteries, modules, and cells by conducting
tests that comply with United Nations
requirements (UN 38.3).
|
|
| |
|
|
| |
|
|
| |
Click to open the large image |
|
| |
|
|
| |
Impedance Spectroscopy for Battery R&D and
Production
Gantner Instruments also offers impedance
spectroscopy, which analyzes capacity, cycling
lifetime, shelf life, current carrying capacity,
low-temperature performance, and impedance of
materials synchronously with other measurements,
such as temperature and strain gauges. |
|
| |
|
|
| |
|
|
| |
Click to open the large image |
|
| |
|
|
| |
Adherence to Industry Standards
Numerous standards exist in battery testing to
ensure safety and protect the battery from
misuse. Test fields can range from the cell
level to the module and up to the complete
battery system. Typical test requirements
include mechanical handling, vibration, shock,
and electrical tests like short circuits or
overvoltage.
Gantner Instruments is involved in numerous
applications for ECE R38.3 (battery transport
test), ECE R100 (tests for homologation for
traction batteries), and ISO 12405 (performance
tests on battery systems). Our flexible and
highly accurate
Q.series X system can measure
and process voltages in the low-voltage range up
to the high-voltage range ±1500V with our latest
development, the A128 plus. Current can be
measured with both shunts and current
transducers (CT). To easily connect current
transducers with secondary current output, we
have designed our Q.raxx slimline A127-2CV. |
|
| |
|
|
| |
|
|
| |
Click to open the large image |
|
| |
|
|
| |
Q.boost Power Analyzer is a top-of-the-line
analog signal chain
Q.boost is the perfect tool to measure and
analyze voltage and current signals in
pulse-width modulated systems (e.g., electric
drives). Boasting an impressive 4 MHz sampling
rate per channel and 1.7 MHz bandwidth, the
Q.boost Power Analyzer offers a noise floor
below -140dB, 34dB better than the competition,
and less than 3 ppm total harmonic distortion
(100x better than any other device on the
market). It includes four high-voltage input
channels (up to +/-1500 VDC) and four inputs for
current transducers (e.g., LEM IT, IN, LF
series, or from Danisens). It has a built-in
bipolar power supply system for current
transducers (no other power supply system and
wiring needed). Interfaces for current
transducers with voltage output or for shunts
are also available. The Q.boost power analyzer
is available in two casing types: Portable and
rugged solution with left and right handles
called Q.brixx and a 19” Rack variant (4U). |
|
| |
|
|
| |
|
|
| |
Click to open the large image |
|
| |
|
|
| |
With the Q.boost power analyzer, many values
like power, power factor, total-harmonic
distortion (THD), and many more can be
calculated with GI.bench on your Windows
Computer or computer-independent on the
Linux-based controller, Q.core. With the Q.core,
the calculated values can be transmitted via CAN
Bus to an automation System (EtherCAT Interface
coming soon). The raw voltage and current values
are always available and can be accessed by our
open API.
For easy connection of torque sensors with
frequency outputs, the system provides 2 inputs
for frequency measurement. Speed sensors
(Tachometer) can be connected to the two counter
inputs.
Gantner Instruments is your one-stop solution
for all battery testing needs, including cyclic,
climate, and abuse testing. We provide
everything necessary to measure and test the
complete EV drive train, offering the highest
accuracy in voltage, current, temperature, and
strain measurements without compromising safety.
Our solutions also incorporate temperature
measurement at high potentials, camera
integration, and power analyzers. All
measurement signals and video streams are
synchronized, ensuring precise data for
variables such as voltages, temperatures,
currents, vibrations, and shocks. No matter the
norms and standards your project demands, we
offer dependable data acquisition solutions for
single or multiple test chambers. Choose Gantner
Instruments to guarantee top-quality testing and
reliable results for your battery development
projects. |
|
| |
|
|
| |
Conclusion
Effectively measuring the evolution of battery
technology requires performing cycling and
stress testing, upgrading existing
infrastructure, having the flexibility to
measure new technology advancements, optimizing
the BMS, maintaining full data access across the
system lifetime, keeping an independent track
record, and using impedance spectroscopy. By
following these easy-to-understand tips, battery
developers can ensure optimal battery
performance and safety, helping to drive the
growth of the electric vehicle industry and
other battery-powered products. |
|
| |
|
|
| |
|
|
|
|
|
|
|
| |
|
|
|
|
|
