Build Hybrid Battery Maintenance Gear For Under $100

i do not at the moment sorry but will get a picture next time i go to my workshop, its just a basic 12v constant voltage led driver around 1a from memory

 

Thank you so much! I finished the resistor/diode portion.

 

Looking good, better than my wire nest. You could make up a board kit, then anyone can just insert wires. Got mine tested, used wire nuts for testing. Volt meter can actually use 5-12v. Next test with discharge load following MparkH's procedure

https://www.insightcentral.net/threads/olrowdy01-v2-grid-charger-build-illustrated.126021/post-1457006

 

It happens that I have the parts from an old project. It is a simple PCB board to do it; I will add it to the parts list.

 

@alftoy, how hot both transformers go? I am asking because right now, in the setup, they are resting in a plastic box (ammo box). If they go hot, I may need to raise it a little bit so that Air can Flow better Around the transformer. Also, the volt/amp can be feed with 12vdc? If it is like that, I can remove the voltage step down to feed that.

 

My transformers are warm, I have lots of ventilation, but that ammo box might get warm, just monitor. Yes volt/amp works fine at 12vdc.

 

Thank you! I will raise the main transformer a little bit for better ventilation.

 

@PriusCamper, I was thinking it is only two cables from the 12vdc to the fan. I have the plug (junker visit), and I ordered the sp20 connector with four pins (two for the battery, two for the fan). Is it somethig different?

 

@PriusCamper, I can do it as well. I hooked a 12vdc battery directly to the fan, and it works fine in full blast. I am interested to see how the relays are controlled.

 

Shouldn't be too hard to run the fan with the Meanwell 12V power supply.

Page for the fan control here

Prius OEM fan control - My wiki

Could use an Inkbird Temp Controller ITC-1000F 12V, on Amazon $15, $22 in Canada.

But the purpose is to run the fan full speed while pack charging so not sure why we would use a temp controller.

 

Fan blower schematic from Mike Dabrowski, maybe the basis for Prolong fan control.

Mike's Main download page

Downloads - MIMA Honda Insight Modified Integrated Motor Assist

http://old.99mpg.com/Data/Resources/downloads/gridchargerstuff/fan_blowercontrol.pdf

 

@alftoy, I agree with you! The schematics showed the 12v Meanwell power supply to feed the car fan. It has nothing fancy between the power supply and fan.

 

@alftoy, I think this needs a piece of code for the pic that he is using. I could be wrong; I am not a brain person; I do the muscle part. I will ask my cousin or if somebody knows it will be nice.

 

I completed The Grid charger! I need to work in the discharge load section and cable to the traction battery.

 

Looks fine. OlRowdy grid charger illustrated build was mighty helpful.

I got side tracked, water pump on the Rav4. 4 hour road trip to go babysit grand kids. Halfway back water pump started leaking, over heated engine, luckily friend 20 minutes away, got some water, filled and made it back home. Service manual said to remove engine???? Wth??? Rav4 world to the rescue. Still waiting for some parts.

 

Yes! The OlRowdy was super helpful! I still need to polish some details, but I like the product. I would do the timing belt simultaneously with the water pump in your Rav4, and I will get an original water pump! Good luck with the project!