Page 1 of 1

BMW i3 LIM voltage measuring board

Posted: Mon Jun 20, 2022 6:46 pm
by muehlpower
I am selling boards that are required to operate a BMW LIM for DC charging. It measures the voltage at the charge port and provides it to the LIM. 5V are required for operation. e.g. from the Arduino or another controller for the AC charger. The measuring voltage is isolated up to 2000V! On the HV side, a cable with eyelets can be soldered, which are screwed to the contactors, on the LV side soldered cables or a Molex connector can be used. The board is then inserted into the supplied shrink tub. Dimensions 14mm x 64mm

€70.- privat or €83.30 with VAT and invoice / 1 board
20220620_201320.jpg
Plan.png
Plan.png (5.54 KiB) Viewed 4502 times

Re: BMW i3 LIM voltage measuring board

Posted: Wed Jun 22, 2022 9:33 am
by celeron55
I'm thinking what are the other use cases for this board. What's the signal like?

Re: BMW i3 LIM voltage measuring board

Posted: Wed Jun 22, 2022 10:48 am
by muehlpower
Based on the isolated amplifier AMC3302DWE from Texas Instruments, it outputs an low impedance analog voltage between 1.42V and 4.8V corresponding to the input voltage of 0V-500V. Isolation is over 2000V, power supply is only required on the low voltage side.

Re: BMW i3 LIM voltage measuring board

Posted: Wed Jun 22, 2022 3:25 pm
by asavage
What forms of payment can you accept?

Re: BMW i3 LIM voltage measuring board

Posted: Thu Jun 23, 2022 12:02 am
by asavage
celeron55 wrote: Wed Jun 22, 2022 9:33 am I'm thinking what are the other use cases for this board. What's the signal like?

From another thread:

muehlpower wrote: Tue Jun 01, 2021 1:01 pm i changed my circuit a little and now it's fine. The circuit is required to measure the voltage at the charging connector and to pass it on to the LIM
Image

Re: BMW i3 LIM voltage measuring board

Posted: Thu Jun 23, 2022 10:38 am
by muehlpower
asavage wrote: Wed Jun 22, 2022 3:25 pm What forms of payment can you accept?
paypal

Re: BMW i3 LIM voltage measuring board

Posted: Thu Jun 23, 2022 3:56 pm
by asavage
PM sent.

Re: BMW i3 LIM voltage measuring board

Posted: Fri Oct 21, 2022 12:45 pm
by eltisodessa
Hi, is it still possible to order it to Ukraine?

Re: BMW i3 LIM voltage measuring board

Posted: Fri Oct 21, 2022 12:49 pm
by Jack Bauer
If its not I'll frigging hand deliver it to you:)

Re: BMW i3 LIM voltage measuring board

Posted: Sun Oct 23, 2022 10:17 am
by muehlpower
eltisodessa wrote: Fri Oct 21, 2022 12:45 pm Hi, is it still possible to order it to Ukraine?
Of course, the post seems to deliver.

Re: BMW i3 LIM voltage measuring board

Posted: Sat Nov 19, 2022 11:01 am
by Sidemips
muehlpower wrote: Wed Jun 22, 2022 10:48 am Based on the isolated amplifier AMC3302DWE from Texas Instruments, it outputs an low impedance analog voltage between 1.42V and 4.8V corresponding to the input voltage of 0V-500V. Isolation is over 2000V, power supply is only required on the low voltage side.
Hi there, I am starting to work on two LIMs that support ISO15118 (inlcuding 0V-1000V -500A-+500A new power limitation)
and I am guessing how should work the HV sense board on a LIM setup with this new voltage range ?
My project is about a bidirectional & mobile power vault that would go up to 920VDC (up to 220S4P LMO cells with 460KW peak charging power)

Thank you in advance !

Re: BMW i3 LIM voltage measuring board

Posted: Thu Dec 22, 2022 10:23 pm
by EVsRock
Hi,

I am interested in purchasing one of these boards. Do you send us a paypal link, or how would we go about paying you?

Re: BMW i3 LIM voltage measuring board

Posted: Fri Jan 13, 2023 3:23 am
by windydrew
Interested

Re: BMW i3 LIM voltage measuring board

Posted: Sat Jan 28, 2023 3:26 am
by asavage
I PM'd muehlpower and he sent me a PayPal invoice.

Re: BMW i3 LIM voltage measuring board

Posted: Sat Apr 15, 2023 6:40 pm
by ivankovff
Congratulations
how can i purchase this board?

Re: BMW i3 LIM voltage measuring board

Posted: Sat Apr 15, 2023 8:58 pm
by asavage
viewtopic.php?p=52033#p52033


[later]

It's possible, as you have only one post on OI so far, that you do not yet have PM capabilities.

Lars has a similar board available. See the Wiki for a link: https://openinverter.org/wiki/BMW_I3_Fast_Charging_LIM_Module#Isolated_DC_charge_inlet_voltage_sense_board

[later still]
Ah, I see Lars' are out of stock :(

Re: BMW i3 LIM voltage measuring board

Posted: Sun Apr 16, 2023 8:26 am
by muehlpower
ivankovff wrote: Sat Apr 15, 2023 6:40 pm Congratulations
how can i purchase this board?
I still have enough boards. You can also contact me through my company if PM doesn't work.
https://www.ib-ideenbau.de

Re: BMW i3 LIM voltage measuring board

Posted: Mon Apr 17, 2023 5:33 pm
by ivankovff
muehlpower wrote: Sun Apr 16, 2023 8:26 am I still have enough boards. You can also contact me through my company if PM doesn't work.
https://www.ib-ideenbau.de
I have send you a PM, please check it

Thank you

Re: BMW i3 LIM voltage measuring board

Posted: Tue Jun 27, 2023 8:01 pm
by asavage
I have one of muehlpower's units, and no longer need it. USD$50 including carriage within the US; add actual postage cost for outside the US.

Re: BMW i3 LIM voltage measuring board

Posted: Tue Jul 11, 2023 6:35 am
by Guy
asavage wrote: Tue Jun 27, 2023 8:01 pm I have one of muehlpower's units, and no longer need it. USD$50 including carriage within the US; add actual postage cost for outside the US.
I would like to purchase it. I’m new to the forum so I can’t private message you yet. Please send me a PM and I’ll provide details for the PayPal invoice.

And can I ask why you no longer need it? Did you find another CCS solution?

Re: BMW i3 LIM voltage measuring board

Posted: Tue Jul 11, 2023 3:52 pm
by asavage
I'm planning to implement an AR7420/QCA700x PLC CCS setup, rather than a BMW i3 LIM setup.

viewtopic.php?t=2262

viewtopic.php?t=3727

Re: BMW i3 LIM voltage measuring board

Posted: Sun Jul 23, 2023 6:40 pm
by asavage
I'm hanging on to mine for a bit, as it's possible that an upcoming QCA700x board may be able to use this sensing board.

Re: BMW i3 LIM voltage measuring board

Posted: Mon Jul 24, 2023 11:30 pm
by alexbeatle
What are minimum wire sizes on the HV and LV sides?

Re: BMW i3 LIM voltage measuring board

Posted: Fri Aug 11, 2023 8:22 pm
by asavage
Guy wrote: Tue Jul 11, 2023 6:35 am I would like to purchase it. I’m new to the forum so I can’t private message you yet. Please send me a PM and I’ll provide details for the PayPal invoice.
I PM'd Guy but he has never read the PM (sits in Outbox). If you read this, Guy, I didn't ignore you, but in any event my board is no longer available.