I am sorry that this is what you are basing your argument on. However, it is not 100% factual. I will agree with you that the alternator is a necessary part of the automotive charging system.You should read and understand this: http://www.bcae1.com/charging.htm
Doesn't get much more basic than that.
I am sorry that this is what you are basing your argument on. However, it is not 100% factual.
I am sorry that this is what you are basing your argument on. However, it is not 100% factual. I will agree with you that the alternator is a necessary part of the automotive charging system.
How many amps of current does your stock cars electronics demand to work properly from the factory?
Engine Computer, Injectors, Body Control Module, A/C System, Factory Stereo, Head Lights, Wipers, All Sensors on the Engine, All Sensors on the Body, TPMS, Fuel Pump, Oxygen Sensors...
Lets say your stock alternator is 135amps
Lets say your stock max electrical load pulls 200amps
The car still runs even though the max amp output of the alternator has been exceeded
The battery is capable of supplying the current needed to fill that deficit because that is what it is designed for... not just starting the car.
Hell, let's match the alternator, let's say the car will pull a max of 135amps. Better hope there isn't a hidden load somewhere right.
But we know it is fine even then because there are several hundred more amps of available current sitting there waiting to be used.
Now you add your aftermarket stereo with its (just for an example) 100amp load. Now you are WAY over the max output of that alternator... but the stereo still plays. Thank the lord for the stored energy in that battery.
The energy in that battery will still diminish even with the alternator charging it so to compensate, the output of the alternator is boosted higher via voltage a few volts above the resting voltage of the battery. So now you are charging your battery with a 2v 135a power supply. - In this example.
Lastly, automotive batteries weren't designed for car audio use. They are designed to run a 12v electrical system. The majority of car audio amplifiers require 14+v for their "rated" power. This is one reason that 14v and 16v batteries were invented for the car audio industry.
It is always a good idea to upgrade to a higher output alternator to help recover/charge the system quicker.
The energy in that battery will still diminish even with the alternator charging it so to compensate, the output of the alternator is boosted higher via voltage a few volts above the resting voltage of the battery. So now you are charging your battery with a 2v 135a power supply. - In this example."
I don't know who argued that it wouldn't, but even that is a bit misleading. The voltage determines the source(s) utilized. If they're not matched the higher voltage source will be the primary until the voltage drop of the system is sufficient to utilize the other source, at which point they'll both be the source. Until that happens the battery is a load, not a source.The power will ALWAYS be taken from the source with least resistance. - Fact.
You're correct, some old alternators had their own voltage regulators but since some ECUs do complicated things with the charging system for efficiency/EPA standards they've taken over the duty of regulating the current from the alternator. The battery is being monitored primarily for the current to and from the battery, but some modern cars also measure temperature, voltage, as well as current. They use this to check the health of the battery and to shed loads or make decisions about whether to disable start-stop and other features reliant on the battery or when to charge it for maximum efficiency. Cold batteries charge faster and so the ECU often prioritizes early charging, but will let the voltage sag a little when the engine compartment is hot.The vehicles computer in a modern car is monitoring the BATTERY voltage. When it drops below a certain voltage, it tells the voltage regulator to send more power to the BATTERY. - Fact.
I don't think anyone argued that it was the only source of power in any situation so long as the engine on, the battery isn't a source though until the current rating of the alternator is exceeded which is quite rare in most cars. That doesn't mean it's not important during that time though since it stabilizes the voltage of the car.If the alternator is the source of ALL power after the car is started then the battery would be isolated after ignition start. There would be no need to charge it and the alternator would last longer. - This does not happen.
Again, batteries both stabilize and provide power when the alternator ratings are exceeded. With audio systems that's common, but with regular cars it's not.If the alternator is the source of all power then the need for batteries in the back all lined up with power cables on them connecting them together aren't doing anything for that huge competition stereo. There should be a group of alternators under the hood with power cables run directly to the amplifiers instead. - This also does not happen.
Who argued they were?Batteries are just for starting things. - False
The motherboard already bypasses the battery for powering the CMOS for date/time and when the computer's got ATX power, just never unplug it and pray to the power company gods to keep the juice flowing.In fact, I am going to remove the battery from my motherboard and install a tiny alternator to power my BIOS.
What you're describing is a generator with a battery charger plugged into it.I will fashion a tiny alternator bracket for my flashlights, my drills, my cell phone, my TV remotes... I don't know why I didn't think of this before. I hope Dayco has the belts I will be needing. - Sarcasm.
I don't know who argued that it wouldn't, but even that is a bit misleading. The voltage determines the source(s) utilized. If they're not matched the higher voltage source will be the primary until the voltage drop of the system is sufficient to utilize the other source, at which point they'll both be the source. Until that happens the battery is a load, not a source.
You're correct, some old alternators had their own voltage regulators but since some ECUs do complicated things with the charging system for efficiency/EPA standards they've taken over the duty of regulating the current from the alternator. The battery is being monitored primarily for the current to and from the battery, but some modern cars also measure temperature, voltage, as well as current. They use this to check the health of the battery and to shed loads or make decisions about whether to disable start-stop and other features reliant on the battery or when to charge it for maximum efficiency. Cold batteries charge faster and so the ECU often prioritizes early charging, but will let the voltage sag a little when the engine compartment is hot.
I don't think anyone argued that it was the only source of power in any situation so long as the engine on, the battery isn't a source though until the current rating of the alternator is exceeded which is quite rare in most cars. That doesn't mean it's not important during that time though since it stabilizes the voltage of the car.
Again, batteries both stabilize and provide power when the alternator ratings are exceeded. With audio systems that's common, but with regular cars it's not.
Who argued they were?
The motherboard already bypasses the battery for powering the CMOS for date/time and when the computer's got ATX power, just never unplug it and pray to the power company gods to keep the juice flowing.
What you're describing is a generator with a battery charger plugged into it.
Although it's technically true, it's always bothered me a little bit that it's said a battery "produces" power, whereas a capacitor doesn't. It leads to silly arguments over the purpose of a battery where each word you choose can be meant in the right way but technically wrong still. You obviously understand how they work by your example of the accessories exceeding the alternator's current capability and the battery filling in to power beyond that. It's probably best to just stick to that example.So what does an alternator do for a Tesla?