from chemistry to pack
posted by Battery Design
How to Size the Battery for Your Forklift Fleet Author: Max Khabur, Marketing Director ENEROC USA A practical guide to moving a warehouse fleet from propane to electric trucks: the benefits of switching and the four variables that determine what size battery the job requires. Why switch Maintenance. An internal combustion engine needs oil changes, filters, spark … Read more
Authors: Stephen Fratamico, Bud Collins Over the past 25 years, battery technology has improved dramatically, yet battery startups have struggled. At Catalus Capital, we have unique and extensive insight into the industry, resulting in an informed opinion on what young battery companies must do to succeed. Over decades, energy density has increased, costs have fallen, and … Read more
Author Dr. Simon Madgwick of Nuvvon Inc. Nuvvon recently showed their solid state 5Ah SiC NMC cell cycling continuously at 3C/5C for 1000 cycles full DOD to 90% SOC. Then incredible sub-zero temperature performance discharging down to -50°C with over 50% capacity and charging at -40°C. Here is the final post on these 5Ah Silicon cells – comparing … Read more
Anode-free lithium batteries take “delete the anode” to its extreme: instead of shipping graphite or a lithium foil, the cell starts with bare copper on the negative side. All the lithium comes from the cathode on first charge and plates itself onto that copper. Removing the graphite host lifts both gravimetric and volumetric energy density, … Read more
Quick facts The prompt for this piece Prof Louis Piper (WMG/Warwick, Faraday Institution) posted a summary of this paper on LinkedIn, describing work from the Faraday Institution’s LEAP project led by Eleni Fiamegkou and Daniela Proprentner. His framing of the result is worth repeating directly, because it’s the thesis the underlying data set out to … Read more
Author Dr. Simon Madgwick of Nuvvon Inc. Last post Nuvvon showed their solid state 5Ah SiC NMC cell cycling continuously at 3C/5C for 1000 cycles full DoD to 90% SoC. Next up is the cell demonstrating incredible sub-zero temperature performance. Here we see discharging at C/5 down to -50° C delivering over 50% capacity. Such cold temperature performance is … Read more
“Sustainability” gets used as a marketing word more often than an engineering one. For battery design it has a specific, measurable meaning: the environmental and social cost of a pack across its entire life, from ore extraction to the moment its last usable atom is recovered or discarded. This page sets out what that actually … Read more
Author Dr. Simon Madgwick of Nuvvon Inc. Since the Nuvvon post unveiling Solid State Silicon Anodes (1Ah Silicon NMC), the cells have been scaled up and further differentiated into 250Wh/kg Power cells versus 400Wh/kg Energy cells. Here is the Power cell with continuous 3C Charge / 5C Discharge full DOD – at point of posting 1014 cycles … Read more
Current Sensor Drift and SOC Estimation Error Propagation This is a worked example accompanying Failure Mode and Effects Analysis (FMEA) in Battery Design. It is the System FMEA example in the set, and deliberately chosen because it shows something the cell-level and pack-level examples cannot: a failure that originates in one subsystem (a sensor) and … Read more
Separator Failure Modes and Internal Short Circuit This is a worked example accompanying Failure Mode and Effects Analysis (FMEA) in Battery Design. It walks through a single DFMEA line at cell level in full, from failure mode to recommended action, using the separator as the subject. The separator is a good first example because it … Read more