lumenpdx
100 mW
- Joined
- Oct 23, 2015
- Messages
- 35
I'm trying to plan out my onboard charging and trying to make sure I understand what's required here. I'll be using an Adaptto controller for battery charging, along with a pair of Mean Well HLG-240h chargers (24v, 10a). The chargers and charging coil will be mounted on the bike. My goal is to automate the charging process as much as possible. The coil can't be connected to the motor when riding or else Bad Things Happen.
I'm going to have an Arduino (actually a Teensy) on this bike to handle some other functions, and figured I'd use it to manage this too. I just need to make sure I'm approaching this operation correctly. My thinking is to use an AC current sensor on the charger's power leads to detect when the bike has been plugged in, and only then close a relay connecting the coil to a motor phase wire. When the AC is disconnected, the controller opens the coil relay.
I'm fine with the programming and such. But I don't have experience working with AC/DC at these levels.
The AC current sensor: I'd need a sensor sensitive enough to detect when the chargers are plugged in but not yet charging the batts. I haven't been able to determine what the "just sitting there doing nothing" current draw is on these Mean Wells. I'm considering something like this: http://www.amazon.com/ACS712-Current-Sensor-Detector-Amperage/dp/B00COD8KJY If the current draw at idle is negligable or undetectable, I'd probably have to use a simple AC-activated relay or something I suppose?
The relay: Any thoughts on a solid state vs mechanical? It needs to handle 48v at 20a. Would this work, or is it overkill for this task? http://www.amazon.com/gp/product/B005X465KW Any reason I couldn't just use a suitably rated mosfet instead? Perhaps an IRF5210?
As a byproduct of having a current sensor, I could easily implement an indicator light that shows the current charging state. I like that idea.
Ok, collective wisdom of the Endless Spheres... Will this work? And yes, I'm perfectly aware my EE skills are just enough to likely burn the house down...
I'm going to have an Arduino (actually a Teensy) on this bike to handle some other functions, and figured I'd use it to manage this too. I just need to make sure I'm approaching this operation correctly. My thinking is to use an AC current sensor on the charger's power leads to detect when the bike has been plugged in, and only then close a relay connecting the coil to a motor phase wire. When the AC is disconnected, the controller opens the coil relay.
I'm fine with the programming and such. But I don't have experience working with AC/DC at these levels.
The AC current sensor: I'd need a sensor sensitive enough to detect when the chargers are plugged in but not yet charging the batts. I haven't been able to determine what the "just sitting there doing nothing" current draw is on these Mean Wells. I'm considering something like this: http://www.amazon.com/ACS712-Current-Sensor-Detector-Amperage/dp/B00COD8KJY If the current draw at idle is negligable or undetectable, I'd probably have to use a simple AC-activated relay or something I suppose?
The relay: Any thoughts on a solid state vs mechanical? It needs to handle 48v at 20a. Would this work, or is it overkill for this task? http://www.amazon.com/gp/product/B005X465KW Any reason I couldn't just use a suitably rated mosfet instead? Perhaps an IRF5210?
As a byproduct of having a current sensor, I could easily implement an indicator light that shows the current charging state. I like that idea.
Ok, collective wisdom of the Endless Spheres... Will this work? And yes, I'm perfectly aware my EE skills are just enough to likely burn the house down...
