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Design me a Product

$750-1500 USD

Closed
Posted about 8 years ago

$750-1500 USD

Paid on delivery
Need circuit design for a lithium battery controller circuit. Circuit will be used to control safe charging and discharging of the lithium battery in a hybrid power system. Initially, we will work together to determine overall design concept and key requirements. Once those are agreed upon, output of this project will be a short report in either MS Office or Google apps with: overview of the circuit design concept, schematic, BOM, circuit performance characteristics under both steady state and transient conditions, thermal characteristics and estimate of cooling requirements. Calculations must be done in Excel or Google spreadsheet. SPICE or Simulink compatible model is highly encouraged. Successful candidate must have experience in power system design and knowledge of lithium battery characteristics. We will work together using web based collaboration and conference calling to make this successful. We will discuss pay for this project and/or a potential partnership. I am an Aerospace and licensed Professional Engineer with over 20 years working and leading international teams on very large scale projects. I am very interested in starting up a company based around this product that I think could be very successful, but need an experienced Electrical Engineer to help make it a reality. I encourage you to send me any questions you may have if you feel that you may be a good fit for this project. Thanks. Dan
Project ID: 9932705

About the project

14 proposals
Remote project
Active 8 yrs ago

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14 freelancers are bidding on average $1,456 USD for this job
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Hi, I am a post graduate power electronics engineer and having very good industrial experience of 8+ years in R&D and project development. I am excellent in electronics circuit design, Regulated power supplies design with universal input to DC output, DC-DC converters design, Microcontroller based SMPS design, Battery management system, Battery chargers, UPS design, sine wave Inverters, solar grid tie inverters, Solar battery chargers and street light systems design, SMPS design from few watts to KW range using Buck, Boost, and Buck -boost, Fly back Push Pull and H-bridge inverters. I have work experience to design from few watts to KW range meeting all compliances like EMI/EMC and safety standards UL etc. I am excellent in PCB design like Altium, ORCAD, CADSTAR etc. I understand your requirement and ready to work for you. Please contact me for further discussion.
$1,250 USD in 20 days
4.9 (60 reviews)
6.7
6.7
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Hi, I am an experienced electrical engineer that specializes in new product design and development. I have extensive power system research and design experience in both conventional source and renewables (i.e. solar, wind, hybrid). In terms of renewable energy systems, I have designed standalone residential and commercial systems, as well as grid-tie applications. This includes component design (i.e. solar panels, inverters, etc.) and battery charging/storage systems (e.g. Solar HEV Charging System). I am very familiar with Lithium batteries and the accompanying security and thermal requirements. I would welcome the opportunity to work with you on this project and in collaboration with your stated deliverables suggest the following project schedule of major tasks: A. Operational Overview B. HW Design C. Design Verification D. Thermal Characteristics Analysis E. Final report I estimate that the project can be completed within 4-5 weeks depending upon review time between milestones. My fee for the project will be $1530.00 ($1375.00 plus Freelancer fees) and the suggested payment schedule is below. My preference for the system modeling and simulations is Matlab/Simulink; however, I am well schooled in SPICE, as well. The Excel spreadsheet will be interactive so that various conditions can be easily analyzed. I am able to get started immediately and hope to have the opportunity to work with you on this project. Sincerely, Michael Cooke, PhD, EIT IHS Consultation
$1,530 USD in 30 days
5.0 (9 reviews)
6.4
6.4
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Hello, Have a great day. I am Shahbaz Ali. i am running a startup company that evolved from Labs of a university. We have developed hybrid power systems to power up a house (more details will be shared in chat). Battery management was a vital part of the project. Please feel free to contact. Best Regards, Shahbaz.
$2,500 USD in 40 days
4.5 (48 reviews)
6.8
6.8
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Hello Dan, We are a team of experts with a cumulative experience of more than 50 years in the field of embedded systems, electronics, programming and prototyping. We offer services from concept to realization and Engineering to Mass production. Our experts have years of experience working with 8-bit, 16-bit and 32-bit architectures. We have skills in developing ultra low power devices with complex computational capabilities. I have read the details of your project. I am myself having more than 12 years of design and development experience of embedded systems and battery management networks. If you are comfortable please drop me a line and we can discuss. Regards For Coherent Technologies (Pvt.) Ltd ch
$1,250 USD in 20 days
4.5 (56 reviews)
6.2
6.2
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Dear Hiring Manager, I'm a professional electrical engineer and have made more than 200 projects for local and international clients. I've also completed 55+ projects here in freelancer.com with excellent reviews and wonderful ratings. Dan, I'm specialised in power and also equally good in designing electronics and programming. I really look forward to clients with whom I can work on long term and develop strong business relationship. From the project description, I hope you're the type of employer I look forward and I will also make sure you find me the best engineer to have for your business. For this, I keep in constant contact with clients, provide them regular updates, provide free support for upto 30 days even after the completion of the project and above all 110% satisfaction. Contact me to discuss the project details, and start our wonderful experience together. Regards. Faraz Ahmad
$1,500 USD in 50 days
4.9 (47 reviews)
5.6
5.6
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Hi Dan! It's quite happy concatenation of circumstances that I've seen your project description. I was occupied by such project. The heart of the problem is definetely clear for me. I've got real experience in electronics development ( circuit design , schematic, BOM, prototype) and software/firmware development (different MCU). It's quite possible that your projects has nuances/peculiarities, which will require additional expenses. But it doesn't confuse me, because I have experience. I feel myself a really good fit for this project. Let's work together and discuss the project in order to determine overall design concept and key requirements. If you're serious about partnership, I will set lower bid now. And of course I will provide circuit design concept, schematic, BOM, circuit performance characteristics under both steady state and transient conditions, thermal characteristics and estimate of cooling requirements. I'm experienced in Web collaboration. I'm online since 8AM your local time. Looking forward to hear from you soon, dear Dan! Best regards, Vitaliy
$1,000 USD in 28 days
5.0 (2 reviews)
4.2
4.2
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Hi, I am an Electrical Engineer and works as an electronics designer. I have skimmed through you project details. I have recently made a low energy wireless power module which is powered up through lithium battery and made a charging circuit for a 3.3V lithium coin cell charger. the charger is made with the pure active components like capacitor and inductor made a buck converter to charge the cell and deploy feedback topology of voltage of lithium coin cell battery to opamp so if charging is complete it will automatically off the charging. So you may contact me as soon as possible. Further we will discuss on chat. I will offer you quality work on less rates. Looking forward to work with you...
$750 USD in 10 days
4.0 (30 reviews)
4.9
4.9
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I am an electrical engineer with a hardware design specialty. I can capture the schematic and layout the PCB in a few days.
$900 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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Good day. We need to talk more in detail about the specifics of the project to provide a more accurate assessment of the cost and time of the project. I already work with lithium batteries, there is not so easy as it seems. You can check the portfolio to make sure my competence.
$2,455 USD in 50 days
0.0 (0 reviews)
0.0
0.0
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already we have circuit for that...we r the R & D engineers.. working in an electronics private companyif interested plz contact on whatsapp..09533148606.. thank u
$834 USD in 6 days
0.0 (0 reviews)
0.0
0.0

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