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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.

Compétences : Electronique, Génie Électrique, Design de circuits, Microcontrôleur

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Concernant l'employeur :
( 4 commentaires ) Cardigan, United Kingdom

Nº du projet : #30994581

31 freelances font une offre moyenne de 178 £ pour ce travail

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 Plus

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(36 Commentaires)
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 Plus

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7.1
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6.9
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.

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(43 Commentaires)
6.6
bijan01in

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

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(94 Commentaires)
6.4
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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 Plus

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(46 Commentaires)
6.0
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 Plus

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(4 Commentaires)
5.5
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.

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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 Plus

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(25 Commentaires)
5.5
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 Plus

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(24 Commentaires)
5.0
bwtxzj

Hi Before i have designed the PCB that can measure the battery voltage with microcontroller(I used the STM32). Also the board has the other functions. I can complete your project. Please contact me.

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(6 Commentaires)
5.0
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 Plus

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(3 Commentaires)
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 Plus

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(23 Commentaires)
4.9
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 Plus

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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 Plus

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(11 Commentaires)
4.6
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 Plus

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(8 Commentaires)
4.3