Detecting high voltage battery isolation failures in electric vehicles : Page 2 of 2

May 03, 2017 // By Graham Prophet
Sendyne in New York has developed a sensor/monitor to detect any compromise to that isolation that could present a hazard to passengers or (in an accident) emergency service workers.
of all types of electrical paths from the high voltage system to the chassis. The SIM100 can detect the values of each resistance or capacitance, as well as the location of the potential hazard, whether on the positive or the negative path. In addition, the SIM100 calculates and provides uncertainty values for each estimate.

Communications are achieved with the host ECU via an isolated CAN 2.0B interface (500 kbit/sec). The module has a wide input voltage of 5V to 53V, thereby accommodating most vehicle systems. It provides a wide temperature range of –40 °C to +105 °C. The module was designed to ISO 6469-3:2011-12 / FMVSS 305. An evaluation kit, with cables, CAN to USB dongle and software is available. Sendyne’s SIM100 IC is also obtainable as a separate component.

"It’s a new type of electronic device that takes advantage of the modern stochastic process theory in order to solve a safety problem with very few known parameters. We are very pleased with the results. We were able to achieve them utilizing modelling and computing tools which we have developed for a wide area of IoT analytics applications,” said Sendyne’s CEO John Milios.