The demand for quality load cell sensors and testing technology solutions in the electric vehicle market is high. This extends into the innovations and testing related to electric vehicle batteries. Design engineers and automotive manufacturers are looking for ways to extend the life of the EV battery, while also seeking ways to maximize overall vehicle performance.
Interface application engineers have been working to provide standard and custom solutions to EV battery manufacturers and testing labs for R&D, prototyping, and performance monitoring. It has sparked recent publications to reach out to Interface to discuss the types of force measurement devices that are being used, along with supportive instrumentation for various tests related to the electric vehicle market.
We’ve captured one of these use cases in the new application note, Electric Vehicle Structural Battery Testing.
The initial requirements for this application were to validate structural battery pack design, both in terms of life expectancy against design targets as well as crash test compliance and survivability. Interface recommended utilizing 1100 Ultra-Precision LowProfile Load Cells in-line with hydraulic or electromechanical actuators within a structural test stand. The 6-Axis Load Cells were used to capture reactive forces transmitting through pack structure. These multi-axis sensors provide more measurement data and brings greater system level insight and improved product success. Using this configuration, the tests performed using Interface’s force measurement products validated the battery packs strong structural design. Read more here.
Recently we shared our experience in working with companies to provide load cells for testing batteries. The details of this interview with DesignNews are highlighted in a brief excerpt below. Read the entire article here.
BATTERY LOAD TESTING PRESENTS NEW OPPORTUNITIES FOR INTERFACE
By Dan Carney at DesignNews
The Arizona force management specialist is finding new opportunities for its load cells testing batteries. In addition to measuring the strength of the battery case, it is also important for automakers to measure the pressure of the cells inside the case. In both situations, force management solutions from Interface, Inc. (Scottsdale, Arizona) are beneficial.
“FEA and computerized modeling get the customer most of the way there,” observed Interface vice president of global sales Brian Peters in a phone interview with Design News. “Automotive OEMs are spending more time on various structural development testing,” he said. “They are push-pull, multi-axis similar to what we see with aerospace fuselage testing.”
This is important because, in addition to the torsional loads normally applied to the battery box in the course of normal driving, there is also the need to model for worst-case crash scenarios.
“You have basic (noise, vibration, and harshness) torsional rigidity requirements, but then you have the crash requirements,” Peters noted. “How do you model, test, and have successful test results? When you run the full system into the barrier, sometimes the outcome is hard to model.”