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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.

Taidot: Elektroniikka, Sähkötekniikka, Piirisuunnittelu, Mikrocontroller

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Tietoa työnantajasta:
( 4 arvostelua ) Cardigan, United Kingdom

Projektin tunnus: #30994581

30 freelanceria on tarjonnut keskimäärin £176 tähän työhön

avigupta0061

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 Lisää

£250 GBP 2 päivässä
(37 arvostelua)
7.3
amelectronics

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 Lisää

£200 GBP 10 päivässä
(66 arvostelua)
7.1
(141 arvostelua)
6.9
(30 arvostelua)
6.5
VoblNet

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 7 päivässä
(43 arvostelua)
6.6
bijan01in

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

£55 GBP 1 päivässä
(94 arvostelua)
6.4
cpp2048

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 Lisää

£450 GBP 7 päivässä
(47 arvostelua)
6.2
liangyao328

Dear Client. I have just read your job description and your project is really interesting to me. I have many experiences working for 12+ years with Circuit design, PCB design, manufacturing functional prototyping with Lisää

£250 GBP 2 päivässä
(5 arvostelua)
5.6
macroenergy

Thanks for Freelancer which gives chance to meet you. I hope you are good. I have read your description carefully and understand everything. I have 12 year experience on analog design, power electronics.I will design Lisää

£84 GBP 5 päivässä
(33 arvostelua)
5.8
alilakho8

Hello dear project owner I am an Electronic engineer with experience in embedded systems designing and PCB designing i can do this in minimum time.

£250 GBP 3 päivässä
(19 arvostelua)
5.4
(77 arvostelua)
5.6
etalhak

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 Lisää

£135 GBP 7 päivässä
(26 arvostelua)
5.2
(26 arvostelua)
5.1
HarimohanG

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 Lisää

£200 GBP 2 päivässä
(3 arvostelua)
5.1
aliabidlodhi74

Hello... Are you looking for circuit designer ?I am experienced circuit designer and electronics engineer. I can draw your schematics easily. I am 100% sure I can do your task in no time. Send me msg then we will disc Lisää

£30 GBP 1 päivässä
(24 arvostelua)
4.9
Devpro11

Hello sir. I hope to work with you because your project is very familiar to my past works. [login to view URL] I have 9+ years experiences in Electrical En Lisää

£250 GBP 7 päivässä
(13 arvostelua)
4.8
Adeel2k14

I hope you are fine. I am a senior electronics engineer. I have rich knowledge of embedded system design and PCB designing. I have understood the project description, i am 100% sure i can complete your task. I will Lisää

£30 GBP 5 päivässä
(15 arvostelua)
4.8
(13 arvostelua)
4.7
peterslance

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 Lisää

£170 GBP 14 päivässä
(8 arvostelua)
4.3
RZtronix

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 Lisää

£250 GBP 30 päivässä
(5 arvostelua)
3.6