[JPFlorida]

Does anybody know if the IX has an automatic thermal battery management system (like Tesla). Not to be confused with pre conditioning, which I use a lot. If the car is parked, sitting out in the hot sun for a prolonged period of time, the cooling system will automatically turn on to keep the battery from getting too hot? I live in S. FL and have kept the car in the sun for a few hours while doing chores and have not noticed the AC running at all, nor the cabin cooler. My buddy has a tesla and our cars were parked next to each other and his was actually running. His told me that the system come on automatically if the cars interior temp is about 105%. My car was not running.

 

[Paladin1]

In their press releases, BMW describes something called "anticipatory thermal management," which apparently includes preconditioning and battery temperature management:

Integrated heating and cooling system with heat pump function, anticipatory thermal management for the battery. The BMW iX is equipped as standard with an integrated heating and cooling system for the cabin, together with its high-voltage battery and its drive system that operates using an exceptionally efficient heat pump function. The system comprises three cooling/heating circuits that can be interconnected by means of electric valves with a shared expansion tank. While driving at low outside temperatures, for example, the excess heat generated by the drive units is used to warm up the high-voltage battery. A two-level cooling module, a refrigerant compressor, two evaporators, a water-cooled condenser and a high-performance control unit together ensure optimum temperature control for both the BMW eDrive components and the vehicle interior in any operating state and in all regular weather conditions. The latest version of the heat pump achieves a remarkably high efficiency factor by making use of ambient heat and heat from dehumidification – as well as the waste heat from the motors – for energy-efficient operation. This results in a gain in range of some 10 per cent compared with conventional electric heating and cooling systems. And range can be extended by as much as 40 per cent in extreme situations, such as driving in stop-start traffic when a high level of heating is required. The integrated heating and cooling system also ensures optimal temperature control for the high-voltage battery in highly dynamic driving situations with high power requirements and when rapidcharging from a DC charging station. If the navigation system’s route guidance function is active and has scheduled a mid-journey stop for the BMW iX at a fast-charging station, anticipatory thermal management will automatically pre-condition the battery beforehand. Warming up the high-voltage battery or cooling it down as appropriate means it will be at the optimum temperature for quick and efficient charging at maximum capacity upon arrival at the charging station. Thermal management takes a number of factors into account here, including current battery temperature, remaining range, the predicted charging rate and the amount of charging planned as part of the overall route calculation.

 

[JPFlorida]

Yeah,, I saw that, but its related to preconditioning the battery "on the way" to the fast charging station by using the Nav system.

 

[ICS_UK]

Yeah,, I saw that, but its related to preconditioning the battery "on the way" to the fast charging station by using the Nav system.

That is just one of the functions read the full text

 

[Ditlow]

What you’re describing in the tesla isn’t related to battery thermal management. The tesla feature you’re describing is only designed to run the AC for the cabin to keep it below about 100 degrees. This is why you hear the ac compressor run so often.

I don’t have details handy for the iX, but, it almost certainly uses the AC compressor for battery thermal management (as would a tesla) but it wouldn’t need to run frequently (or at all) to maintain battery temp while stationary and not charging. Additionally, it’s more likely to require thermal management in winter than in the summer while stationary.

 

[JPFlorida]

Oh Ok,,,That makes sense and explains why my friend tells me that on a really hot day his tesla can really drain when sitting for hours in the sun

 

[Paladin1]

What you’re describing in the tesla isn’t related to battery thermal management. The tesla feature you’re describing is only designed to run the AC for the cabin to keep it below about 100 degrees. This is why you hear the ac compressor run so often.

I don’t have details handy for the iX, but, it almost certainly uses the AC compressor for battery thermal management (as would a tesla) but it wouldn’t need to run frequently (or at all) to maintain battery temp while stationary and not charging. Additionally, it’s more likely to require thermal management in winter than in the summer while stationary.

^^^This.

 

[Carnook]

Tesla Cabin Overheat Protection can be toggled: Off, No AC, With AC. In almost all climates the No AC option will suffice and does not drain the battery much.

 

[EV_technician]

Tesla Cabin Overheat Protection can be toggled: Off, No AC, With AC. In almost all climates the No AC option will suffice and does not drain the battery much.

True
On my Tesla S it will still turn main battery contractors to recharge 12V battery because cabin fan even AC is off will draw enough current to call for 12V battery recharging .
Windshield sunshade are best alternative to this type of issue.