DNV, NexTech Materials, Beckett Energy
Systems
Sensor Enhanced and Model Validated Life Extension of Li-ion
Batteries for Energy Storage
ARPA-e AMPED Program
DNV, NexTech Materials, Beckett Energy Systems
Sensor Enhanced and Model Validated Life
Extension of Batteries for Energy Storage
Davion Hill, Ph.D., Senior Engineer DNV Research
614.761.1214 , Davion.M.Hill@dnv.com
Technology
Advantage and Differentiation
DNV is testing a novel off gas measurement concept
to detect degradation in Li-ion batteries. This
monitoring and measurement concept will be used to
monitor batteries under varied stress, and
demonstrate safe monitoring of second life batteries
in a community energy storage application.
The sensor concept is unobtrusive and nondestructive.
Monitoring in this fashion offers the following benefits:
Novel, non invasive sensing technique for battery
degradation and off gas
Validation and economic test of second life of batteries
• Improved safety
• Providing a warning mechanism for flammable off gas
• Correlating state of health or stress with off gas activity
• Viable for stationary or mobile applications
Addressing safety is a unique feature of this
technology.
Deployment of second life system with sensors in a
commercial community energy storage system
Performance Targets
Normalized Resistance
1.2
1.0
0.8
2 ppm
1 ppm
1 ppm
1 ppm
0.6
2 ppm
1 ppm
2 ppm
2 ppm
0.4
0.2
10 ppm
10 ppm
10 ppm
10 ppm
10 ppm
0.0
0
20
40
60
Time (hours)
80
Metric
State of the Art
Proposed
Sensor for multiple
cell faults
Temperature or
voltage
Novel off-gas
sensor
Battery life prediction
with +/- 10%
accuracy
Intentional
overdesign
Life extension with
doubled revenue
Demonstration of
second life in CES
Never been
done
Validation of
performance
Please contact regarding: R&D, technology validation, collaboration, press, business development
© Det Norske Veritas AS. All rights reserved.
Can off gas be used
for monitoring and
control?
Sensor Enhanced and Model Validated Life
Extension of Batteries for Energy Storage
© Det Norske Veritas AS. All rights reserved.
Project Partners and Roles
• Testing
• Modeling
• Evaluation
• Off gas sensor
• monitoring
Sensor Enhanced and Model Validated Life
Extension of Batteries for Energy Storage
© Det Norske Veritas AS. All rights reserved.
• Demonstration
• Batteries
• Energy storage
technology
Contact: Lora Thrun
l.thrun@nextechmaterials.com
Sensor Prototype Platform
GOAL: Monitor EC and DEC
off gas from batteries
Prototype Sensor Construction
• Tubular element packaged on TO8 header with resistive heater
• Packaged element soldered to circuit board and installed in housing
• Prototype Device I/O
– 12-24VDC input
– Heater control
– Signal processing (element resistance  0-5VDC output)
Sensor Enhanced and Model Validated Life
Extension of Batteries for Energy Storage
© Det Norske Veritas AS. All rights reserved.
Integrated Approach to Battery Qualification
Contact: Davion.M.Hill@dnv.com
1
2
Design
Specification
Test
3
5 Performance
Model
Cumulative
Energy Map
1.2
Battery 1
Battery 3
Battery 2
Battery 0
Battery 4
1
Standard Ah (2C)
0.8
0.6
0.4
Severity
Ranking of
Degradation
Factors
4
© Det Norske Veritas AS. All rights reserved.
0.2
0
0
200
400
600
800
Cumulative Ah
1000
1200
1400
Demonstration
Distributed Energy Storage
At the Grid Edge
Sensor Enhanced and Model Validated Life
Extension of Batteries for Energy Storage
© Det Norske Veritas AS. All rights reserved.
Contact: Brad Moore
bmoore@beckettcorp.com
Thermal and Cycle Testing to Qualify Sensing
Mechanism
Temperature ramping and heat soak
Environmental boxes
Gas control, monitoring, and sampling
Sensor Enhanced and Model Validated Life
Extension of Batteries for Energy Storage
© Det Norske Veritas AS. All rights reserved.
8
Facilities
© Det Norske Veritas AS. All rights reserved.
9
Community Energy Storage
© Det Norske Veritas AS. All rights reserved.
10