from chemistry to pack
Can we find a battery pack from the Battery Pack Database, using a limited dataset of 642 packs. Something that might get you an idea as to what you should be looking at? Note: if you just want to search based on useable energy just delete the values in all of the other search boxes. … Read more
A pack charging time estimator built using the Electric Vehicle packs in the Battery Pack Database. EV Pack Charging Time Calculator EV Pack Charging Time Calculator Estimates DC fast-charge time from pack size, chemistry, peak charging power, and a SoC window, then layers on a simplified thermal model — starting pack temperature, pack mass, and … Read more
After gathering lots of data on drones we thought it would be useful to pull together a simple drone power and energy estimation calculator. Plotting the average power demand, hovering demand and maximum power versus flight mass we start to see a relationship. OK, this is log-log and so lots of scatter. Hence: use this … Read more
Knowing the power demand for a battery cell or pack is really useful, but how do you turn that into a current demand? The following image shows the solution we use in the Battery Calculations Workbook and in the Vehicle Model. At first it can look daunting, but it is quite simple, maybe too simple … Read more
Use this EV Range Calculator to predict your electric vehicle’s driving range based on real-world conditions. Select your vehicle (Tesla Model 3 or VW ID.4) or input custom specs to get a tailored estimate. Custom EV Range Estimator Your Estimated EV Range 0 km Select Your Vehicle Choose a preset vehicle or use custom settings: … Read more
Often it is difficult to estimate the battery pack volume, hence here is an approximation based on data fitting. Hence a first approximation is that the battery pack volume will be 5x the total energy in kWh. A 100kWh battery would have a volume of 500 litres. If this was a design optimised for volume … Read more
It is possible to use the battery pack database to estimate the pack mass from cell density. The key relationship we have is between cell and pack gravimetric energy density. This graph has been pulled together by scouring the internet for cell and battery data. The ratio of cell density to pack density is 0.6235 … Read more
Battery pack mass estimation is a key parameter required early in the conceptual design. There are a number of key reasons for estimating the mass, one of the main ones being the significant percentage it is of the overall mass of the complete system. One option is to list all of the components and assign … Read more