FERCSA
Member
- Joined
- Jan 16, 2017
- Messages
- 87
Hi!
In the last few months I built my own laptop(yes and it's working great!) and I thought it's gonna be fun if I made a arduino based battery pack for it. Until then I'm using a smbus based panel from a salvaged x60 battery. I know it has a lot of feature I'm mean a lot.. but heey where is the challenge?
So in the mean time I got a lot of old laptop batteries for research and everything, so I got an another idea.. I should build an automatic charger/discharger station for my 18650 cells too.
This two things are very related, because I can use the discharger mosfet circuit for balance my batteries in my laptop, right?
So I started to brainstorming and I came up with a really good solution for my station: stackable charger/discharger modules!
There'll be the master module with arduino and a multiplexer then a lot of slave modules. Each module will accept 8 18650 cells. If you want more just thrown in one more slave module and you already can charge or discharge 16/24/32.. cells in the same time. Of course arduino will control and logging everything! Voltage, current, temperature etc. I'm planning to add wifi support too!
This log from my very early prototype in my laptop. In the current state it's just a battery monitor system:
docs.google.com/spreadsheets/d/15-TjWL1w3QZ-HRGr0dIwD0O4YzJwbcgDjGcCb15BkmM/edit?usp=sharing
Diagrams on the 2nd and 3rd sheet.
3 cells under charging, nothing fancy here right now it's just a simple battery monitor with voltages. Arduino logs everything in a csv file. But first I need to finish the charger station then I'll upgrade it with a balancer and any safety feature, right now there is a blinking led for low voltage..
Anyway if anybody interested in my project(s) I can (b)log my progress here. I'm not a youtuber.. so I'm not gonna make any videos sry, maybe one when I'm finished.
I open for any suggestions, comments etc..
ps.: FCDS = FERCSA's charger/discharger station.
In the last few months I built my own laptop(yes and it's working great!) and I thought it's gonna be fun if I made a arduino based battery pack for it. Until then I'm using a smbus based panel from a salvaged x60 battery. I know it has a lot of feature I'm mean a lot.. but heey where is the challenge?
So in the mean time I got a lot of old laptop batteries for research and everything, so I got an another idea.. I should build an automatic charger/discharger station for my 18650 cells too.
This two things are very related, because I can use the discharger mosfet circuit for balance my batteries in my laptop, right?
So I started to brainstorming and I came up with a really good solution for my station: stackable charger/discharger modules!
There'll be the master module with arduino and a multiplexer then a lot of slave modules. Each module will accept 8 18650 cells. If you want more just thrown in one more slave module and you already can charge or discharge 16/24/32.. cells in the same time. Of course arduino will control and logging everything! Voltage, current, temperature etc. I'm planning to add wifi support too!
This log from my very early prototype in my laptop. In the current state it's just a battery monitor system:
docs.google.com/spreadsheets/d/15-TjWL1w3QZ-HRGr0dIwD0O4YzJwbcgDjGcCb15BkmM/edit?usp=sharing
Diagrams on the 2nd and 3rd sheet.
3 cells under charging, nothing fancy here right now it's just a simple battery monitor with voltages. Arduino logs everything in a csv file. But first I need to finish the charger station then I'll upgrade it with a balancer and any safety feature, right now there is a blinking led for low voltage..
Anyway if anybody interested in my project(s) I can (b)log my progress here. I'm not a youtuber.. so I'm not gonna make any videos sry, maybe one when I'm finished.
I open for any suggestions, comments etc..
ps.: FCDS = FERCSA's charger/discharger station.