zipn
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I would like to see Slate design the battery / charging system hardware and management firmware/software to be configurable (charge rate, voltage and current modulation, algorithms, etc.) designed for expected battery upgrades. Ford and GM have already announced expected breakthroughs with lower cost, lighter weight lithium-manganese-rich (LMR ) battery chemistries due in the next few years. Toyota and others are working on solid-state batteries as well. These new batteries will probably have different (but not too different) requirements for charging limits and monitoring than the default battery from Slate.
I understand the Slate nickel-manganese-cobalt (NMC) battery is designed primarily to meet the requirements for the possible tax credit, and that's fine for the initial release, but what if the system was designed so that 5-10 years from now, the original battery could be pulled out (quick-connects for the cooling lines?), and an entirely different battery put in? One with less weight, more range? A simple change in the firmware via an over-the-air update and the Slate now has longer range!
I suspect this will require a "universal" battery management system that's initially preprogrammed for the 2 original battery options, but with proper design, could have the ability to change it's voltage, current and charging/monitoring parameters to handle larger kwh batteries (not necessarily with faster charging as that would require much larger power electronics, but at least it could provide the longer range and cold weather performance promised with the next-gen batteries).
Slate could get some additional revenue (as well as 3rd party battery suppliers) by providing the DIYers the option to upgrade the battery with e Slate-compatible battery pack (same size, mounting, colling & wiring ports and voltage) and a quick firmware update.
https://www.caranddriver.com/news/a64746843/gm-lmr-battery-cells-future-ev-lower-prices/
https://insideevs.com/news/757802/slate-ev-battery-chemistry-lfp/
I understand the Slate nickel-manganese-cobalt (NMC) battery is designed primarily to meet the requirements for the possible tax credit, and that's fine for the initial release, but what if the system was designed so that 5-10 years from now, the original battery could be pulled out (quick-connects for the cooling lines?), and an entirely different battery put in? One with less weight, more range? A simple change in the firmware via an over-the-air update and the Slate now has longer range!
I suspect this will require a "universal" battery management system that's initially preprogrammed for the 2 original battery options, but with proper design, could have the ability to change it's voltage, current and charging/monitoring parameters to handle larger kwh batteries (not necessarily with faster charging as that would require much larger power electronics, but at least it could provide the longer range and cold weather performance promised with the next-gen batteries).
Slate could get some additional revenue (as well as 3rd party battery suppliers) by providing the DIYers the option to upgrade the battery with e Slate-compatible battery pack (same size, mounting, colling & wiring ports and voltage) and a quick firmware update.
https://www.caranddriver.com/news/a64746843/gm-lmr-battery-cells-future-ev-lower-prices/
https://insideevs.com/news/757802/slate-ev-battery-chemistry-lfp/