electrical engineer consultant


We are looking for someone to consult and update our lithium-ion battery management system.

Our current design functions correctly and all firmware is working but we are looking to make it more robust and also add some features. We currently have a design and firmware for 7S as well as a 10S lithium battery packs built around the BQ77PL900 and a PIC16.

Instead of the BQ77PL900, it looks like TI is now recommending to use the BQ76930.

We currently have our own state of charge calculations... but would prefer to have something more accurate... similar to the BQ34Z100-G1 perhaps. We hope that by using industry proven technologies by TI all together we get a more accurate picture of the battery system health. We want the BMS to use three "fuel gauge" measurements (voltage, Coulomb Counting, Impedance Track) to accurately read battery level and eliminate false readings even over the lifetime of using the battery. It appears the BQ34Z100-G1 can help greatly with this.

Δεξιότητες: Ηλεκτρική μηχανολογία, Ηλεκτρονικές Φόρμες, Ηλεκτρονικά, Microcontroller, PCB Layout

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ID Εργασίας: #12678448

8 freelancers κάνουν προσφορές με μέσο όρο $22/ώρα γι' αυτή τη δουλειά


Dear Sir, If you are looking for an highly skilled hardware engineer, I believe that I am the one who you're looking for. I am also an experienced PCB designer who has over 15 years design experience on complex PCB Περισσότερα

$24 USD / ώρα
(108 Αξιολογήσεις)

Hi Sir I am an expert electronics engineer I can help you with this. Please have a look at my profile I assure you quality work and on time delivery Regards

$23 USD / ώρα
(153 Αξιολογήσεις)

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 high frequency transformers design, circuits design, multi-chan Περισσότερα

$22 USD / ώρα
(49 Αξιολογήσεις)

Hi sir, We have read your project and we are confident that we can do it for you.as we are Pakistan based so you can have conversation with us in easy way. Please discuss in details with us. We assure you the qua Περισσότερα

$18 USD / ώρα
(4 Αξιολογήσεις)

Been working with battery management for quite some time now. Here are some of the boards that I've created: https://www.openhardware.io/view/291/Power-path-manager-and-battery-charger-with-5V-and-33V-output http://w Περισσότερα

$20 USD / ώρα
(2 Αξιολογήσεις)
$22 USD / ώρα
(1 Αξιολόγηση)

Hi there, we are new to freelancer, We are expert in both hardware and software development in field of electronics, having 2+ years of experience in circuit designing/debugging, coding, MatLab and various micro-contr Περισσότερα

$27 USD / ώρα
(0 Αξιολογήσεις)

Am an Expert in Electronics Circuit Designing and Embedded System Programming. check my website: www.MakeElectronics.ng. blog: www.MakeElectronicsng.blogspot.com Am also a PCB expert, designing a board to its smal Περισσότερα

$22 USD / ώρα
(0 Αξιολογήσεις)