I may be misunderstanding your comment but the wires coming out of the end of the BMS are the signal wires to the computer. All the voltage/amperage in & out of the battery flows from top to bottom of the cable side. I tried to find a cutaway drawing of the sensor online but came up empty. Seeing the inside workings of the BMS sensor may make your understanding clearer.
Your so typical your picture is next the entry "engineer" in the dictionary - your a living cliche
You're correct, nothing is going up hill.Think of it as water, a river (who said that?
Water does not flow uphill does it? Of course not. Thus the BMS does not "see" any water flowing past it.
It does seem that way does it not! The ancient Hebrews would look at how the ocean would stop at the beach and not flow over their whole world, a miracle in their mind and called it God's "Doors of the Sea" (recorded in the Psalms).
Bypassing the BMS MIGHT lead to overcharging or improper charging of the battery. The BMS's job is to keep detailed track of the state of charge of the battery and to determine how much and how fast to charge the battery.
Agreed.
Yes, but that is just step one. Can you guess what step two will be?
Ya maybe you’re right(that if I see how the circuitry flows) it would clear up my misunderstanding. It just appears to me that the BMS mounts directly to negative battery post and the tab is just simply an extension of neg battery post. But from what all comments I’m reading is that tab is not a direct connection to battery post. Im going to try to find a BMS cutaway/diagram schematic to help me see what I’m missing. Thank you
That's simply not true, but whatever. Believe what you want. I'm sure the engineers at Ford and every other manufacture using BMS have it completely wrong.
You can clearly see in my picture that it's not an extension of the battery post. I've posted this pic a few times now in this thread. Thought that was settling the debate lol. The BMS is clearly in between the battery terminal and the negative connection to the vehicle.
Just want to circle back to this - you were agreeing that the tab is on the terminal side of the BMS, which is why I'm confused about what you're saying now. The photo I posted shows that the tab and negative lead are clearly on top of the BMS, meaning all electricity has to pass through the BMS sensor in order to make it through to the negative battery post. So I'm not sure why everyone's talking about magnetic fields now... We were clarifying here that indeed all of the electrical current going to the negative post of the battery has to pass through the BMS sensor, and as such, the negative lead of the Bronco is on top of the BMS and the battery post is on the bottom of the BMS.
Ok…thanks for “circling back”
@Sparkie wants to know why when you connect a jumper/charger negative clamp to the battery post directly, the BMS does not "see" current...why does the current flow only from the two posts to {the inner chemistry of the battery} - and not at the same time "flow" past the BMS as well so that it can measure it? It's all connected by conductive metal is it not? It appears to be all one big interconnected circuit...
The Army taught us "Red from the dead to red on the good. Black from the good to under the hood"
Those of us that aren't engineers don't overthink right or wrong and just have to believe "because that's how it's supposed to work".
