Microcontroller based Battery Charger for bike

Guys,

for my bike I have to design and create a battery charger.
The rating of the battery is 12V/3AH.

I have got circuits based on LM350 which will charge battery of my bike.
But, I think I should control it through a cheap microcontroller.

Is it possible to do that?
If yes, which are the conditions which I can monitor through microcontroller?

You can use LM338K its 5A regulator, but I must ask is 3Ah enough to power byke ? You can use LM317 or LM350, this battery should charge with max 0,7A. Trafo should give 18V on secundar, put some nice rectifier bridge. Of course you didnt mention is this a little toy ?

You can use uC to monitor charging voltage of battery and disconnect if battery is fully charged.

---------- Post added at 19:26 ---------- Previous post was at 19:19 ----------

uC can control voltage and current of charging battery, even can calculate how much Ah battery received. Also uC can control multiphase phase charging.

misnomerfrenzy said:

Guys,

for my bike I have to design and create a battery charger.
The rating of the battery is 12V/3AH.

I have got circuits based on LM350 which will charge battery of my bike.
But, I think I should control it through a cheap microcontroller.

Is it possible to do that?
If yes, which are the conditions which I can monitor through microcontroller?

Click to expand...

**broken link removed**

papunblg said:

**broken link removed**

Click to expand...

This is for lithium batteries. If I look better first post, he didnt say what battery he intend to use, but I supose 12V is not voltage of one lithium battery (lead acid).

tpetar said:

This is for lithium batteries.

Click to expand...

I just wanted to give him ideas on the application of microcontroller in the field of a battery charger.

You can also use a microcontroller for charger-to-battery- management-system communication and interaction, such as in a smart charger; flexible user interfaces, such as those in charge-status displays;.....................A charger for a more complex battery usually has a status display, such as an LED bar graph or an LCD, for example. Implementing this feature usually requires a microcontroller because dedicated charge controllers have simple status-display support.
..............................................

Click to expand...

extracted from the post

Guys,

I have reconfirmed the ratings of the battery of my bike. It is 12V/3AH.

See this...

Battery 12V-3 Ah

Head Light 12V-35W/Halogen Bulb, Trapezoidal, MFR

Tail Stop Lamp 12V – 5 / 10 W (Twin bulb), MFR

Turn Signal Lamp 12V – 10W (Amber bulb) x 4 nos MFR, clear lens

Click to expand...

I think I should use microcontroller for (considering the suggestions given by you people)

1. measuring the charge level of battery.
2. Start and stop charging based on the battery charge level.
3. Error indication in circuit, battery charging etc
4. Anything else???

I have PIC Programming tool available with me so I will choose PIC microcontroller. Will 12F or 10F series controller do as they have ADC and External INTR ( I will need ADC to check the battery charging level, if I am not wrong)
Please tell me if I am going in right direction.

The charging circuit I have got is... **broken link removed**

---------- Post added at 18:01 ---------- Previous post was at 18:01 ----------

Guys,

I have reconfirmed the ratings of the battery of my bike. It is 12V/3AH.

See this...

Battery 12V-3 Ah

Head Light 12V-35W/Halogen Bulb, Trapezoidal, MFR

Tail Stop Lamp 12V – 5 / 10 W (Twin bulb), MFR

Turn Signal Lamp 12V – 10W (Amber bulb) x 4 nos MFR, clear lens

Click to expand...

I think I should use microcontroller for (considering the suggestions given by you people)

1. measuring the charge level of battery.
2. Start and stop charging based on the battery charge level.
3. Error indication in circuit, battery charging etc
4. Anything else???

I have PIC Programming tool available with me so I will choose PIC microcontroller. Will 12F or 10F series controller do as they have ADC and External INTR ( I will need ADC to check the battery charging level, if I am not wrong)
Please tell me if I am going in right direction.

The charging circuit I have got is... **broken link removed**

One example with uC, just for thinking :

Charge Controller for 12V lead-acid or SLA batteries
**broken link removed**




Three phase charging process :




Easely can be implemented to existing simple charger with trafo and bridge rectifier :

Upload the software here please. Project is useless otherwise.

Link to software can be found on bottom of linked page

or you can just go here

**broken link removed**

tpetar said:

Link to software can be found on bottom of linked page

or you can just go here

**broken link removed**

Click to expand...

This is useless. The page requires registration. Couldn't you just post it here?

Then register. What to say.

tpetar said:

Then register. What to say.

Click to expand...

All right, I thought it was a paid service.

You can also see it here :

https://www.siliconchip.com.au/cms/A_110348/article.html

And here you can direct download PCB, HEX, and other stuff :

https://www.siliconchip.com.au/cms/attachments/show.html?year=2008&month=April

I have designed a circuit in Proteus which analyses battery voltage level and pass it on to PIC.
I have used a design with two sheets. But unfortunately, the nets from one sheet doesnt pass to the other sheet.

That is connections named V0, V1, V2, V3 on sheet 1 are not passed on to the sheet 2, where I am naming them with the same names.

I am attaching the proteus files with this. Kindly let me know, where I am going wrong.

Can you zip and upload the hex file so that the simulation can be checked.

check this https://www.edaboard.com/threads/204503/

I was facing the same problem and now changed the sheet size.
But still wondering, why the nets could not connect across different sheets. :!: