Probing CAN Bus For EV Battery Info

The widespread adoption of the CAN bus (and OBD-II) in vehicles was mainly a way of standardizing the servicing of progressively sophisticated engines and their desires to satisfy contemporary emissions benchmarks. Even though that may audio a very little dry on the surface area, the existence and standardization of this communications bus in fundamentally all passenger autos for three many years has led to some intriguing aspect results, like it is usage in this undertaking to show some further info about an electric powered car’s battery.

There’s not a ton of information and facts about it, but it is a good proof-of-strategy of some of the factors CAN opens up in vehicles. The develop is primarily based on a Citroën C-Zero (which is effectively just a re-badged Mitsubishi i-MiEV) and takes advantage of the info on the CAN bus to screen specific details about the point out of cost of the battery that isn’t if not demonstrated on the car’s shows. It also involves a create of a new secondary exhibit specifically for this function, and the establish is sleek plenty of that it seems to be like a regular component of the car or truck.

Even though there are definitely other (maybe less complicated) methods of interfacing with a CAN bus, this just one employs off-the-shelf electronics like Arduino-suitable microcontrollers, is completely put in, and has a custom situation that we truly like. If you are just setting up to sniff about your personal vehicle’s CAN bus, there are some great equipment out there to look at out.

Many thanks to [James] for the tip! out?v=ng3ovxGFdM4