Testing

EV batteries and battery packs are complex systems, requiring a comprehensive design and testing strategy to help ensure safe and efficient electrical power.

The safety hierarchy is a flexible concept that can be helpful in deciding on a final product design. But it can also be a trap for the unwary design engineer. This article will discuss the safety hierarchy concept, how do you comply with its requirements, and what are the problems associated with it?

Are you considering the purchase of an EMC chamber for in-house testing? If so, what factors should you consider for determining if the investment is a wise choice or if the continued utilization of a third-party test facility is the better option?

EMC testing laboratories often have limitations (limited availability, lead times, etc.) that can make it difficult to obtain timely results from routine troubleshooting. Inexpensive test equipment can support efficient and economical in-house EMC troubleshooting.

As they become more commonplace in today’s motor vehicles, advanced driver assist systems (ADAS) require a unique set of testing procedures that include repeatability of the trigger mechanism in a safe, controlled environment to accurately measure their effectiveness.

Industrial human-robot collaborative systems must be validated thoroughly with regard to safety. Due to the complexity of robot systems, safety flaws often stay hidden, especially at early design stages, when a physical implementation is not yet available for testing. Simulation-based testing is a possible way to identify hazards in an early stage.

Within the past 18 years, many studies exploring 3 µm to 7 nm technologies have demonstrated the excellent correlation of CC-TLP with CDM in terms of stress current failure threshold as well as electrical failure and physical damage signature.

The 16.6 ohm implementation of contact CDM (LICCDM) recently published in ANSI-ESD Standard Practice 5.3.3 is shown to produce waveforms of similar shape, I_fail, and I_peak vs. C_eff dependency as JS-002. The non-monotonicity of JS-002 at low voltages is overcome using LICCDM. A path to joint standardization with air discharge testing is proposed.

A fully functional ESD floor prevents static generation and provides an effective path to ground for personnel and equipment. Many conductive and dissipative floors meet STM 7.1 resistance parameters in ANSI/ESD S20.20 but fail to provide adequate electrical contact for grounding equipment with conductive casters and drag chains.

Modern lithium batteries require a comprehensive approach to risk assessment and mitigation during product development, and a swift and systematic response when safety concerns arise in the field.