- #1
Manoj Sahu
- 54
- 1
The circuit is intended to control the charging of a 12v 7ah battery by a 10w, 24v volt solar panel.
Will this solar charge controller circuit work?
- Thread starter Manoj Sahu
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- Charge Circuit Controller Solar Work
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SUMMARY
The discussed solar charge controller circuit is designed to charge a 12V 7Ah battery using a 10W, 24V solar panel. However, the circuit lacks essential components for down-converting the 24V input to the required 12V output and does not include Maximum Power Point Tracking (MPPT) management circuitry. While the circuit may function as a basic voltage sensing mechanism, it is insufficient for effective battery charging without additional voltage regulation and current limiting features. Users are advised to explore the limitations of the 555 timer in this application and the intricacies of battery charging processes.
PREREQUISITES- Understanding of 555 timer circuits
- Knowledge of battery charging processes
- Familiarity with solar panel V-I characteristics
- Basic electronics and circuit design principles
- Research "555 timer applications in power regulation"
- Study "Maximum Power Point Tracking (MPPT) techniques"
- Learn about "battery charging algorithms for lead-acid batteries"
- Investigate "solar panel voltage conversion methods"
Electronics enthusiasts, solar energy system designers, and hobbyists interested in building efficient solar charge controllers and understanding battery management systems.
The circuit is intended to control the charging of a 12v 7ah battery by a 10w, 24v volt solar panel.
- #2
berkeman
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Could you explain in more detail how this circuit is supposed to work? Where did you get it?Manoj Sahu said:
And how are you down-converting the 24V power source to charge the 12V battery? What kind of 12V battery is it (lead-acid, etc.)?
How are you ensuring that you are drawing power from the Solar Panel or Windmill at its Maximum Power Point? I don't see any MPP management circuitry or voltage conversion circuitry in this schematic...
- #3
Averagesupernova
Science Advisor
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I guess the way I see it is a voltage sensing circuit with some adjustable hysteresis that switches the battery in and out of the charging circuit. That part should work but there is nothing that steps down voltage or limits current. A good start but not complete.
- #4
PhysicoRaj
Gold Member
- 538
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I guess you are referring this site - http://www.mdpub.com/555Controller/. The site provides a good looking schematic and comparison but unsatisfactory explanation on how it works and why you should be doing few things like they've been told to.
The 555 can do more than what it does in that circuit (search more about this). And I don't think that is a charge 'controller', probably just some hysteresis implementation with facility to switch between dump/charge mode, as Averagesupernova pointed out.
Lastly, (connecting your other thread on wind turbines) I don't think this circuit will charge your battery from a wind turbine, which might be a an alternator if you're thinking about. Solar just might get away with it.
I suggest you to do some self study on 555's, charging process of a battery (or batteries) and Power & V-I characteristics of solar panels. Blindly following an electrical DIY is not recommended.
The 555 can do more than what it does in that circuit (search more about this). And I don't think that is a charge 'controller', probably just some hysteresis implementation with facility to switch between dump/charge mode, as Averagesupernova pointed out.
Lastly, (connecting your other thread on wind turbines) I don't think this circuit will charge your battery from a wind turbine, which might be a an alternator if you're thinking about. Solar just might get away with it.
I suggest you to do some self study on 555's, charging process of a battery (or batteries) and Power & V-I characteristics of solar panels. Blindly following an electrical DIY is not recommended.