If anyone is having no comms issues with these modules there may be a fundamentally different slave IC in their packs. Tried all the code shared here only to find the modules I have are MAX17854 as confirmed from reading register 0x0. Yeah; the 17854 is found in CATL's 6S1P too. On my site there is...

Maybe some (water) level sensor is now not happy inside the pack...

You can use my BMS.

If the "stick" or secundary voltage is the same why to simply use 555 timer and feed 2 voltages one 12 and one from the DC/DC? Small relais can do the magic. Maybe KISS method?

This BMS is available. You can configure them the way you like.
(But practical is obviously per 6S).

I will investigate. Maybe I build the BMS and try it.

A contactor has specifications. For PWM freq, minimum current & minimum voltage. My TE relais for example need 20khz, 700mA, 20% duty, 150mS.

Instead of PWM maybe it's an idea to activate an adjustable stepdown DC/DC converter?

MartinN wrote: ↑Tue Feb 27, 2024 2:01 pmIf so, is it likely that I could get around this by listening to the interaction between the VCSEC/IDU and playing it back with my new drive unit?

Easy to check I would say. Why not check?

Hi you can use the modules and if needed the cooling plates.
With third party BMS, like mine, you get full control over the parameters and or configuration.

Re-use of HV relais might be possible too. Depending on the type used in this vehicle.

Time to fed it HV , 12Vdc and turn it on?

Always best to measure it; at least you are best informed then. This is what I would do: Get to the motor phases and measure between them for Ohm. Between each phase and housing. Ohm. Diode setting on multi meter between battery positive and each phase. Red leg on battery positive / black on each mo...

Isn't there a CAN Log available from a real PHEV from which we can learn a bit if it regulates?

Post some pictures of the modules maybe I can help.
I make BMS'S.

Most of the BMS issues are with FET based BMS's. Most EV ones are relais controlled ones.

Not using an BMS in any build IMHO shouldn't be safer if it is you got the wrong BMS .

BMS communicates limits...these limits are forwarded/applied to charger.

You got Ioniq 5?

Obviously local heat is the issue. Not good flow? To high setpoint?

In the battery pack.

The configuration of the vehicle needs to know this charger. So you need dealership software etc. to modify it. This with the assumption that connectors and signals are all equal between the 2 chargers.

I think the ABS pump or other unit has it on canbus.
Time to grab a canbus dongle and find out.

If you don't find it i'm pretty sure they would be easy to make and to add some fuses etc.

I'm not sure if you are looking in the right place.
Would it be possible to have a battery connection not tight enough?

Best is to make a DBC file with the correct fields.

I am hoping to locate a dedicated LIN controller that I can use to control the HVH50.

My IO gateway could do this.

How much interest is there?

Send me an PM!