Battery Management System Design – A Panel Discussion & Audience Q&A
During an Open Technology Forum panel discussion on the show floor at the 2014 Battery Show in Novi, Michigan, leading industry experts from Nuvation Engineering, Linear Technology, and Bloomy partnered together to discuss the future of Battery Management System design. We recorded this 45-minute industry event and are pleased to share it with you here.
Panel Discussion Video
Audience Q&A Video
Active vs passive balancing
How BMS design decisions impact cost, safety, pack range and lifetime
How Battery Management Systems Utilize State of Charge (SOC), Health (SOH), and Life Measures (SOL)
I was participating in a panel discussion about battery management system (BMS) design at the 2014 Battery Show in Novi Michigan and was asked for some of my opinions around State of Charge, State of Health, and State of Life measurement for large-scale batteries. While I was presenting Nuvation’s new battery management system at our booth on the exhibition floor, similar questions came up again a few times, so I thought I would share my answers here.
- Michael Worry, President and CEO, Nuvation Engineering Read More
5 Principles of First Time Right Electronic Design
Getting to “first time right” is a key goal at Nuvation Engineering and is built into our electronic design methodology. Broadly speaking, it means two things: First, when you design and build new hardware, your methodology delivers new boards with zero cuts and jumps. You may need to still tweak a component value or two or change component population options, but you’ve avoided those problems that would require a board re-spin. Second, your first board spin has NO architectural or serious performance issues that would require a re-spin before transitioning to volume manufacturing. So basically “First Time Right” means “no board re-spin required.” This helps your project stay on budget, on schedule, and maybe even ahead of the curve on both of those critical KPIs. Read More
It look like the tech paparazzi got a snap of Discofish, Nuvation’s ever evolving autonomous vehicle experiment, at Burning Man 2014, and an honorable mention in Techcrunch. Well, to be fair, they called her a “horror from the depths of the ocean” instead of Discofish, but hey, there’s no such thing as bad publicity, right? But seriously Techcrunch folks, if you want to actually get to know her by name, do drop by and let us take you on a tour, she lives at the Nuvation Garage in Sunnyvale California. Be sure to come visit at night though, so we can light ‘er up for ya! This year we added LED-expressive iridescent tail fins to the humble camper van that has grown into a an extra long fully autonomous vehicle with LIDAR, a sound stage, flamethrower, and (ahem, cough cough) “dancing pole” on it’s “tongue.” Here she is all lit up at Burning Man in 2013.
And (drumroll….) we also made internet TV! It was Andy Warhol who said we all get 15 minutes of fame. I counted about a 3/4 of a second for Discofish at 2:35 (the timer runs backwards, so that’s at the beginning) of Katie Kouric’s video about Burning Man. Andy, you owe us 14 minutes, 59.25 seconds.
After developing four generations of custom battery management systems for large-scale batteries, Nuvation Engineering has launched a modular and scalable off-the-shelf BMS that reduces the need for manufacturers in the electric vehicle, grid energy storage, and telecom power backup industries to develop their own custom solutions.
September 16, 2014, Novi, Michigan, THE BATTERY SHOW. Nuvation Engineering has begun taking orders for a Q4 product release of Nuvation BMS™, their new battery management system for high capacity battery packs with outputs in the 36VDC to 1200VDC range. Many off-the-shelf battery management systems do not natively support voltages as high as 1200VDC, a target set by Nuvation’s Director of Product Management, John Corman, to address the upper end of grid energy storage requirements. Read More
When designing Nuvation BMS™, Nuvation’s fourth-generation battery management system and first off-the-shelf BMS, our goal was to create a set of modules that could be connected to the battery pack in different configurations to support a wide range of battery topologies with different chemistries, voltages, and capacities. Our industry research and consultations with customers revealed three main market verticals where such a configurable BMS was of greatest interest to manufacturers:
Specialty Vehicles – Battery powered traction systems and subsystems
Telecom Power Backup – Data centers and telecom towers
Grid Energy Storage – Micro grid, solar, wind, etc.
While not every target battery deployment we encounter fits neatly into one of these categories, this matrix enables one to evaluate the Nuvation BMS in terms of its suitability to meet the full range of its target battery topologies.
A battery pack is typically scaled in one or both of two directions: vertically and horizontally. Scaling vertically involves stacking battery cells in series to increase pack voltage. Scaling horizontally involves connecting multiple stacks of cells in parallel to create greater capacity at the same pack voltage. Very large systems usually require the pack to scale both vertically and horizontally to deliver high voltage and high capacity. Read More
Nuvation Engineering will be launching our new off-the-shelf Battery Management System at The Battery Show in the Suburban Collection Showplace in Novi, Michigan Sept. 16-18, 2014.
Visit us in booth # B1621 on the show floor to see our new off-the-shelf BMS product demonstration in action. Linear Technology will also be showcasing their products using Nuvation’ BMS in their own booth, # E905
On Wednesday September 17, 3:00pm-3:45pm, in booth B1853 on the exhibition floor, Nuvation Engineering, Bloomy, and Linear Technology will be participating in a panel discussion about the future of battery management systems with respect to large-scale battery technologies. This panel discussion is free to all Battery Show attendees, and will offer expert insights into this rapidly growing area of battery technology.
September 18, 1:30-3:15, Conference Track 2, Ruby Ballroom – Battery Management Systems – Michael Worry, Nuvation’s CEO, will be participating in this conference track and discussing “Real-world challenges for battery management systems.
For more details, please visit our website Events Page.
Congratulations to Marina Dimitrov from Portland Oregon, the 2014 winner of Nuvation’s $1,000 engineering scholarship. Applicants were asked to submit a short essay about something they really enjoyed about engineering. Marina told us all about her work on robots that make elephants exercise!
Packy’s robot personal trainer is getting some upgrades from Marina’s FIRST Robotics team.
Marina gets ready to make a robot!
Now a Sophomore at Stanford University majoring in Biomechanical Engineering, Marina discovered her passion for robotics during high school in the FIRST Robotics Competition, where she created robots that play Frisbee, soccer, and basketball (this time the robots did the exercising!).
Marina working in the lab.
Elephant feeder UI flow chart.
Robots playing, ummm, what sport is that?
This summer she studied the “biomechanics of tuna” and is thinking of ways to make robots swim better by “striving to understand and mimic what nature has had millions of years to design.” Not a bad resume for eighteen years old – wait a minute, are we saying “Marina” is studying the biomechanics of fish at Stanford Hopkins Marine Station…I get the feeling we will be hearing more about this dynamic future engineer in the…future. Congratulations again Marina, and please drop by Nuvation’s California office sometime, and see if you have any biomechanical engineering tips for our air hockey playing robot.
At Nuvation we began using the term “Franken-systems” many years ago (maybe back in the late 90’s?); nobody recalls the exact moment in time. Somebody probably blurted it out on seeing a lab setup with wires running all over between development boards and perfboard circuit prototypes. We’ve certainly seen the term other places as well, so we don’t know if we came up with it first. Doubtful we did, but we do like the term, it’s a concept that customers, vendors, and new colleagues all seem to understand.
A Franken-system refers to a collection of development boards for processors, FPGAs, sensors, and the like wired together to create a very non-form-factor early prototype in order to facilitate software and logic development. Sometimes we’ll make lab prototypes for certain circuits, sometimes we’ll have custom cables made, and sometimes we’ll go so far as to fabricate interposer cards to connect boards that have complicated interfaces, lots of connections or high-speed considerations. Read More