1971 GMCe Lexus GS450H BMW 530e Tesla Model S Electruck [Upgrade]

[Gregski]

Your board has V2 in silkscreen, so there's your answer. Because it's a V2 there's a different power switch and a BJT rather than a FET, but that doesn't change the previous comment about not being able to PWM that signal.

Thank you I appreciate that.

[Gregski]

moving down the list the second set of CAN Bus wires was next, this is additional CAN in addition to the CAN on the B Connector

my 1971 Chevy truck predates CAN Bus architecture by a couple millennia so there is nothing to integrate with meaning we don't need these two Pins

[Gregski]

alright folks hang in there we have one more pin to cover, so hold on to your underwear

GROUND on pin 20, I think this is redundant as there is already another ground on pin 20 of the B Connector

[Gregski]

so these 20 pin CINCH header connectors part number 5810120011 are back in stock so I went out and bought one

now before you lecture me how the VCU aint gonna work with only one connector hear me out

[Gregski]

Technically the only thing holding us back from going to a single 20 pin header connector aka the black B plug is the Transmission Oil Pump PWM signal on pin 16

[Gregski]

SOLUTION: I call it the internal PWM ByPass

yes I will unsolder the B Connector pin #6 from the circuit board first

[PatrcioEV-ATX]

SOLUTION: I call it the internal PWM ByPass

yes I will unsolder the B Connector pin #6 from the circuit board first


PWM ByPass.jpg

It’s your project, do what you want. You might not even need to desolder the pin, just unconfigure/undefine it in the code. If you find that you need the ground from connector A you can always jumper that over to the ground on B. Having said that, there’s a lot of potential functionality you’d be foregoing by not using any of the in/outputs from A.

[Gregski]

so decided to give the VCU a little rest and gently caress my BMW 530e plug in hybrid battery pack

[Gregski]

having learned you can't just probe the thing with a multimeter

[Gregski]

the lid had to come off

first observation: the lid is not glued on like on the Nissan Leafs or Teslas, (makes me wanna hug a BMW engineer)

[Gregski]

and here's how BMW numberizes the cell modules from left to right starting with number one in the basement of the passenger side, right below #3 and ending with #6 right below number 4

[Gregski]

I really wanted to get a voltage reading, so when I saw 346 out of 351 I was pleased

[Gregski]

I managed to yank one cell module out so that we can get more acquainted, and I threw it on the scale

[Gregski]

in this video we take a peak inside the BMW 530e plug in hybrid, high voltage battery pack

[Gregski]

I also measured the volts of a single cell module

[Gregski]

I managed to combobulate a Teensy CAN Bus transceiver setup to run Tom's BMWPhevBMS to get a more detailed reading of the six cell modules and all 96 individual cells, thanks to Damien's pin out, and OutlandishPanda's free hand wiring diagrams and pics

[Gregski]

took a deeper dive into the BMW 530e plug in hybrid battery pack

[Gregski]

I wanted to share this for a size reference, this is a 2 foot by 4 foot piece of plywood, and it appears 9 cell modules will fit on top of it

[Gregski]

and you thought butter knives are just for flat head screws

[Gregski]

and turn to the left...

and a bird's eye...

[Gregski]

throw some labels on it...

[Gregski]

In the video below I use a Teensy microcontroller board with a CAN Bus transceiver to run Tom de Bree's specialized version of his SimpBMS called BMWPhevBMS to get a voltage reading of each of the individual 96 cells in the BMW 530e plug in hybrid battery pack.



thank you OutlandishPanda for your help

[Gregski]

yanked the OEM BMW 530e Battery Management electronics SME? aka Master BMS module

Part # 7536514-09 (maybe ?)

[Gregski]

cell module tetris video

[Gregski]

and here are the 2018 BMW 530e (G30) BMS slave boards