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Battery charge/discharge circuit

Eoin Duggan

May 9, 2015
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Hi, I am wondering of anyone is able to help me explain this circuit. I have a brief idea on how it works, but not 100%. its going to be presented in a 5 minute slide show, so around a 30 second explanation would be great, thanks!
 

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Arouse1973

Adam
Dec 18, 2013
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Hello Eoin
Why are you doing this? Job interview is it? Why would you be asked to do this? can someone turn it up the right way, its difficult to follow on its side.
Thanks Adam
 

Eoin Duggan

May 9, 2015
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Hello Eoin
Why are you doing this? Job interview is it? Why would you be asked to do this? can someone turn it up the right way, its difficult to follow on its side.
Thanks Adam
Hi Adam, Its basically a project I have in college. I wss expecting an explanation to come with the kit, but it did not. I have attatched the picture the correct way for you. Thanks. Eoin
 

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Arouse1973

Adam
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Ok what do you know so far? What are the bit you are not sure of?
Adam
 

Arouse1973

Adam
Dec 18, 2013
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So it looks like its either charging or discharging. If you dont press the discharge butoon it will charge, is this correct?
Adam
 

davenn

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Sep 5, 2009
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hi Eoin cant help you there ....

its pretty disgusting that their www site doesn't even have a description of operation :(
 

Eoin Duggan

May 9, 2015
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So it looks like its either charging or discharging. If you dont press the discharge butoon it will charge, is this correct?
Adam
I thought It had an automatic discharge, so would start discharge, then switch to charge once battery is flat
 

davenn

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it did say it has an automatic discharge and charge


so in that it will detect when the voltage has dropped to a predetermined level
 

Arouse1973

Adam
Dec 18, 2013
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Looks like it work the other way. When you press the switch it latches A2 which starts to discharge the battery, when the battery voltage has gone low enough set by resistors at the bottom of the circuit diagram then A1 resets the discharge circuit and the timer via C2. The timer will also timeout after a certain time also. After a quick look thats what I think. I will need more time to be sure.
Adam
 

Eoin Duggan

May 9, 2015
7
Joined
May 9, 2015
Messages
7
Hello Eoin
Why are you doing this? Job interview is it? Why would you be asked to do this? can someone turn it up the right way, its difficult to follow on its side.
Thanks Adam
Hi Adam, Its basically a project I have in college. I wss expecting an explanation to come with the kit, but it did not.
Looks like it work the other way. When you press the switch it latches A2 which starts to discharge the battery, when the battery voltage has gone low enough set by resistors at the bottom of the circuit diagram then A1 resets the discharge circuit and the timer via C2. The timer will also timeout after a certain time also. After a quick look thats what I think. I will need more time to be sure.
Adam
right okay, didnt know that, thanks adam
Eoin
 

Arouse1973

Adam
Dec 18, 2013
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Let me have another look sometime tommorow. I'll let you know. Just couldnt see a charge button.
Adam
 

Arouse1973

Adam
Dec 18, 2013
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Hi Eoin
I have looked at the circuit again and yes it looks like it discharges the battery first before charging. The reason for this is because it does not have any other termination method other than a timer. If you placed a fully charged battery on this circuit you could end up damaging the battery after 14hours or 52 minutes of charge if it didn't discharge first.
Thanks
Adam
 
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