Lipo Charging and under-voltage protection

Hi All,

I'm new here and am about to embark on a project that I need a little assistance on.

I'm looking at how to power my projects, which consists of a Raspberry Pi and a 7" LCD touchscreen.

I have been thinking about using some sort of battery, with a Li-Po being the most common one I can see in use in projects.

I have seen lots of charging circuits for Li-Pos however i have not seen any circuits to protect against under-voltage.

On my RC racing quad and 450 development platform, i have a voltage alarm that alerts me as I reach what is considered the lowest safe voltage.

Below this point i understand you run the risk of damaging the cells, and possibly cause a fire (YouTube has many videos on this). This type of alarm is not appropriate in my application and i need a different solution

Are there any charging circuits out there that also provide low voltage protection?

Thanks in advance

Steve

Top Replies

clem57 over 9 years ago +2

I am assuming your are a DIY type person. But take a look at http://www.microchip.com/wwwproducts/en/en024903 which includes undervoltage protection. I found off LiPo charging circuit tutorial | Hackaday…

clem57 over 9 years ago

I am assuming your are a DIY type person. But take a look at http://www.microchip.com/wwwproducts/en/en024903 which includes undervoltage protection.
I found off LiPo charging circuit tutorial | Hackaday except the links to the tutorial are bad.You may want to check batteries - Under Voltage Protection for LiPo Battery - Electrical Engineering Stack Exchange as well. Good prototyping and please post your progress here.
Clem
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