อนุทิน 174254

ชีวิต ในปี 2567 (2)

(A new series on life issues in this year) Example 2: Electric Vehicles
EVs on average are heavier than internal combustion engine (ICE) powered vehicles of the same size. The battery is the reason. On average, EV batteries weigh about 450kg, but most weigh over 900kg for more power/longer distance between charges.

This means EVs waste more energy on moving themselves (than passengers). More weight means more momentum - harder to stop, more serious injury or damages on collisions. And as EV motors are much quieter than ICE, drivers often fail to notice the speed.
–Climate control [aircon] systems take 3-4kW to run equivalent of 11km/h for air, 8km/h for heater.

A typical EV battery has about 8 kg of lithium, 14 kg of cobalt, and 20 kg of manganese. (But a Tesla Model S’ battery, contains around 62.6 kg of lithium. On average, about 60 to 75 percent of a battery’s total weight comes from the cells and the materials they contain, while the remaining 25 to 40 percent is made up of the battery’s metal casing, cables, and thermal and battery management systems (TMS and BMS). [As at Jan6, 2024 Lithium carbonate USD78K/metric ton, Cobalt USD46,900/ton].

In all EVs are helpful steps but not the final solution to combating climate change.