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Hardware low-voltage battery protection circuit

£20-250 GBP

Cerrado
Publicado hace más de 2 años

£20-250 GBP

Pagado a la entrega
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.
ID del proyecto: 30994581

Información sobre el proyecto

30 propuestas
Proyecto remoto
Activo hace 3 años

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30 freelancers están ofertando un promedio de £176 GBP por este trabajo
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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 circuit , when the battery falls below a critical level, as measured by the UC, it goes into sleep mode so This hardware low voltage protection circuit prevent further discharge as per your requirements. We have seen the attachments so, Please message us so that we can discuss in details what shall be step by step formula for Hardware low-voltage battery protection circuit. We have experience in Battery Powered Device based PCB design and know all the intricacies required to get the job done with perfection. Following is a brief list of expertise that we are carrying: 1. IOT products development 2. Microcontrollers based circuit design 3. Smart Products like Smart watch 4. Wireless Products - BLE/WIFI 5. low-voltage battery protection circuit, 16.8V lithium 6. 12V, 3V3, sensors, 500mA, Components, 500mA. Please answer the following questions: 1 What are your future plans with this project? 2. Are there any specific market standards like CISPER you are aiming? 3. What will be ambient temperature of this product? Let’s have a quick discussion for 5 mins where we would formulate a plan of action of how we shall take this project to the horizons of success. Regards Avi Tech Experts Quality is never an Accident
£250 GBP en 2 días
5,0 (37 comentarios)
7,3
7,3
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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 PCBs manufactured and assembled with shipment to your destination. In future if you needed any programming for your hardware. I can also do that. If you wish we can discuss in chat. Thank you.
£200 GBP en 10 días
4,8 (66 comentarios)
7,1
7,1
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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 en 7 días
5,0 (43 comentarios)
6,6
6,6
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Hi I am interested to your project. I am familiar with electronics, microcontroller as well as PCB design by Eagle. Thanks.
£55 GBP en 1 día
4,9 (94 comentarios)
6,4
6,4
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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 efficient MPPT (Fixed voltage tracking) and cost effective solar charging solution. This MPPT chip comes from a Chinese Semiconductor company (Shanghai based) and its switched mode, so the efficiency will be much higher than this LM317 based design as well as component cost wouldn't add up much on this. From the component's value I assume the battery pack is not very high power so I am not sure if efficiency at all matters here, but yes, the dissipated heat would be very less and product will not heat up when its charging and can run without any heatsink. This existing schematic could be modified to add this complete supply cut to ensure no further battery draining. However I am proposing a better design (with some extra component cost) along with PCB design (in Eagle and ready to be uploaded on to JLCPCB). I am still open for any further discussions if you need me just for the schematic modification of existing design, I can do that at cheaper project fee. Please send message to discuss further. Thanks for your time. Best Regards ...Roy
£450 GBP en 7 días
5,0 (47 comentarios)
6,2
6,2
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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 firmware programming and testing especially. I have developed many kinds of IOT and smart control devices in using Arduino, Raspberry pi 4, MCUs, Microcontroller. So that, your project is not problem for me. Here are some of the experiences that I built ago. - Schematic and PCB design and Layout using Altium Designer. - DDR, motor control, power converter, Keyboard, POE, UART, SPI, I2C, RF, BLE, LED lighting design. - ARM Cortex-M, DSP, MCUs(STM, Nuvoton and so on), Arduino, Raspberry pi experiences. I would be very grateful if you give me a chance to satisfy you. If you want, I can show you the products I've made until now to let you know I am the best choice. I'll do my best for you. Thank you for your time. Best regards.
£250 GBP en 2 días
5,0 (5 comentarios)
5,6
5,6
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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 en 3 días
5,0 (19 comentarios)
5,4
5,4
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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 Schematic and also modify PCB design while meeting all requirements in a quality and timely manner. Please message me so that I can discuss in details and have seen the Attachments you shared. I have read and understood your requirements and could do it for you in the least time and utmost superior quality. I have experience in Hardware Design, Circuit Design, Solar System, PCB Design and could design it for you. I am having more than 15 years of experience in Circuit Design, Hardware Design, PCB Design, Circuit simulation, IOT products development and building electronic products. The expertise of mine is in the following fields: 1. Wireless Products – BLE, Wi-Fi, NFC, Lora etc. 2. Power Electronics 3. IOT sensors interfacing 4. Microcontrollers- ESP32, STM32, STM8S etc. 5. GSM, GPS 6. Battery After reading your project details, I have certain queries and suggestions: 1. What is the application of this product? 2. What will be ambient temperature of this product? Please try to answer these questions based on which I would be providing free of cost consultation. The Price mentioned is for indication purpose and exact would be calculated after requirements finalization. Waiting for your reply, Regards Hari Mohan Engineering for one is a magic for others
£200 GBP en 2 días
5,0 (3 comentarios)
5,1
5,1
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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 discuss details. My Introduction: I have master degree in Mechatronics Engineering, have 7 years of Industrial experience in dealing with Power Electronics, Electrical Engineering, Electronics components and all type of microcontrollers C/C++, Python programming like Arduino PIC STM 32 Esp32 ESP8266 Raspberry PI. Here is my portfolio: https://www.freelancer.pk/u/aliabidlodhi74 Kindly contact me and we will discuss the detail of task. Budget and time will be decided in chat. Regards Engr M Ali Abid
£30 GBP en 1 día
4,9 (24 comentarios)
4,9
4,9
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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 provide you a professional work. I have expertise in many electrical and programing tools including. 1. MATLAB 2. Proteus 3. Arduino 4. MPLAB 5. AutoCAD 6. Xilinix 7. Altium 8. LTSpice 9. PSpice 10. Mickro C I have working experience of the following controller and processor. 1. Atmel 2. PIC 3. ESP32 4. Atmega 5. Raspberry Pi 6. Nordic By profession I am an electronic engineer working in a reputed firm. My major responsibility is to design custom embedded system to fulfill the client needs. You can check my previous work in my portfolio. https://www.freelancer.pk/u/Adeel2k14 My experience and expertise help you in producing a best and effective solution of your problem. Allow me to work for you. Best Regards,
£30 GBP en 5 días
4,7 (15 comentarios)
4,8
4,8
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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 optimizing these kind of circuits, and i simulate all designs in LTspice and Tina TI before construction. I use EasyEDA to construct final designs, and then make the PCB, which means I can get your components from the right place. I am very sure I can complete your design and give you constant feedback on the development on your design as I build for your verification. I have worked on these kind of projects before and they were excellent for me and others. Please feel free to go through my past portfolio and previous reviews from others I have worked with, I would love to give you the same experience. I'm the right man for this Job, and I'm sure you'll love the experience. Please leave a message, I'm always available in chat, let's discuss details of the project, I would love to hear from you Thanks Peter.
£170 GBP en 14 días
5,0 (8 comentarios)
4,3
4,3
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Hello, Thanks for posting the project. I am an Electrical Engineer with 30 years’ experience of Customized Product Development for Instrumentation and Control applications. I am based in Kolkata (India) and running a business in the name of "Zetek Systems". I have a good hardware setup and a team for fabrication and testing. As you want a 100% cut off, my solution is to use a relay. But it will consume current while in operation. The other alternative is to use power MOSFET switch, but the associated circuit will consume current (very small but not zero) while in cut off. Its a design trade off and you have to choose any one. Looking forward to your valued reply. Regards - Debasis Basu
£250 GBP en 12 días
5,0 (3 comentarios)
3,8
3,8
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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 waiting for your kind response thanks
£250 GBP en 30 días
5,0 (5 comentarios)
3,6
3,6
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I am a BSc Electrical and Electronics Engineer with a specialization in Power & Control Engineering, and an MSc Telecommunications Engineer with a specialization in Electronics. I have 5 years of experience in the field living in Spain. I am specialized in PCB design (EAGLE, Protheus, KiCad, Altium), Microcontrollers ESP8266, ESP32, Arduino, RaspberryPi. I have advanced knowledge of C++, Image Processing, Signal Processing, Neural Network, MATLAB, and Simulink. I am highly experienced with EMI, and I am quite sure that I can help you with your project.
£250 GBP en 2 días
4,9 (8 comentarios)
3,7
3,7
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Hardware low-voltage battery protection circuit I am Minahil Zahid with vast amount of experience in multiple fields like; Finance & Economics, Accounting & Cost Accounting, Business & Management, Taxation & Auditing. I have achieved great amount of success in this industry by providing TOP NOTCH solutions to my clients. I always provide quality services & respect to my clients because I consider him/her as my BOSS. I provide friendly environment to my clients so they always feel comfortable and openly discuss their requirements which allow me to produce MAXIMUM results..
£20 GBP en 1 día
5,0 (1 comentario)
0,0
0,0
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hello! I have got the cheapest solutions using Microchip PIC16F MCU Low cost low power consumption, I also have a Solar charging station I can test your project you with it thank you for your time
£133 GBP en 3 días
0,0 (0 comentarios)
0,0
0,0
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I have 3.5 years experience in hardware design especially extensive knowledge in battery protection circuit design
£100 GBP en 5 días
0,0 (0 comentarios)
0,0
0,0
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I have skills in multi-layers PCB designs since 2010 and analog/digital electronic designs since 1995. I've already designed complex well-working circuits with solar power input, Li-Ion batteries management, including cut-off voltage, ideal diodes oring and no supply current when system is OFF. I will respect all state-of-the-art electrical rules for your PCB, including track's size, track's thickness, heat's dissipation, low impedance ground plane, intelligent components placement, smart routing, 3D rendering, SPI/I2C/UART implementation, PIC10F 12F 16F 18F C-language programming, etc. I have all tools to produce few perfect working prototypes, including multimeters, 4x 200MHz Teledyne-LeCroy oscilloscope and ultrasonic cleaner. I know well components market and how to find difficult components with the semiconductor-shortage now. You won't be disappointed by my perfectionist work.
£180 GBP en 7 días
0,0 (0 comentarios)
0,0
0,0
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Hello sir, We go through your project requirement. We can deliver the project as per your requirement .
£200 GBP en 10 días
0,0 (0 comentarios)
0,0
0,0
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Hi, I already worked on similar requirement. And this work can done with only two major components and few resistances. I have 5+ years experience in electronics industry and product development. We can discuss further in chat. Thanks & Regards
£110 GBP en 7 días
0,0 (0 comentarios)
0,0
0,0

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Bandera de UNITED KINGDOM
Cardigan, United Kingdom
5,0
4
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Miembro desde nov 30, 2020

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