• AlteredEgo
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    9 months ago

    Can’t you put a solar panel on top and heat the batteries to keep them above 0°? I guess the problem is that you want the opposite of thermal insulation for batteries when they are working, but insulate them when it’s too cold.

      • AlteredEgo
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        9 months ago

        Snow could be melted by heating the solar panel. Unless it’s snowing constantly this could still be net positive over multiple days. This would mostly be useful for grid storage / house storage. But I could imagine an EV doing this too - a few solar panels to heat up the batteries each morning to improve efficiency. Or if it’s plugged in. It should be relatively easy and cheap to negate the problems of low temperature with 1 kW of PV for 250€, a micro controller and a temperature sensor and some resistance wire.