Hardware low-voltage battery protection circuit

We have a battery powered device (16.8V lithium ion) with an on board microcontroller. If the battery falls below a critical level, as measured by the uC, it goes into sleep mode. We would also like a hardware low voltage protection circuit to prevent further discharge; ie 100% cutoff and zero current drain when the battery falls below 12 volts. The solar charging circuit needs to remain operational. When the battery voltage rises above 12V, the device should operate correctly as before.

The power part of the circuit is as attached.

PWR take off is for high current devices (pump) which takes up to 6 amps.

12V take off is for running sensors.

3V3 is for electronics.

Q7 provides current limited charging from PV; limited to 500mA.

Only the schematic is needed. We will take on the PCB design and testing here.

Components used must be from [login to view URL], and in stock.

Minimum parts possible please.

Evner: Elektronik, Elektrisk Ingeniørarbejde, Kredsløbs Design, Microcontroller

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Om arbejdsgiveren:
( 4 bedømmelser ) Cardigan, United Kingdom

Projekt ID: #30994581

30 freelancere byder i gennemsnit £176 timen for dette job


Best Circuit Design Expert at your doorstep! Dear Client, We have more than 15 years of hardware low voltage protection circuit so we able to do this project for you. We can provide a hardware low voltage protection c Flere

£250 GBP in 2 dage
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Hello, I have experience in designing electronics circuits and can design your PCB. I will design your PCB in eagle CAD and will provide you Gerber files, BOM and Pick n Place files. I can also help you getting the PCB Flere

£200 GBP in 10 dage
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Hello, I had work with Power Delivery and Distribution Power using a battery, I can think about how to do it better for your application, with optimal use of components.

£250 GBP in 7 dage
(43 bedømmelser)

Hi I am interested to your project. I am familiar with electronics, microcontroller as well as PCB design by Eagle. Thanks.

£55 GBP på 1 dag
(94 bedømmelser)

Although this is very crude design, but the charging part is not very efficient. Also, I am not sure how your Li-Ion battery balancing is done. Is it at the battery pack already ? However, there is a very good and effi Flere

£450 GBP in 7 dage
(47 bedømmelser)

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£250 GBP in 2 dage
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£84 GBP in 5 dage
(33 bedømmelser)

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£250 GBP in 3 dage
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Hello, I am an electronics and telecommunication engineer and I am quite experienced with hardware and embedded systems' design. I have designed many PCBs and I am quite experienced with EMI. I have checked your requir Flere

£135 GBP in 7 dage
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FREE OF COST CONSULTATION Dear Client, I have lots of experience in Hardware Circuit Design so I will able to do this project it for you. I can design Hardware low-voltage Solar battery protection circuit with Schemat Flere

£200 GBP in 2 dage
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£30 GBP in 5 dage
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Hi there, I'm an electronics engineer who has built solar charge controlling circuits, I understand the needs for a battery protection circuit and also have built that into my designs. I have 4 years of experience opti Flere

£170 GBP in 14 dage
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hi i hope you are feeling well i have studied the project description i can offer you my services i worked alot on battery managment system the work area is in my domain please check my portfolio for reference work wai Flere

£250 GBP in 30 dage
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