Essentially every other EV maker uses temperature regulation on batteries. Ex: BMW i3 uses A/C evaporator coils in the battery. Chevy Bolts run a coolant plate in the battery that is heated/cooled as appropriate. Nissan Ariyas have a coolant loop in the battery. Ford Mustang Mach-Es run a coolant plate in the battery (actually nigh identical to the Bolt). VW ID.4s use a coolant plate.