BMW i3 LIM voltage measuring board

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muehlpower
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BMW i3 LIM voltage measuring board

Post 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
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Re: BMW i3 LIM voltage measuring board

Post by celeron55 »

I'm thinking what are the other use cases for this board. What's the signal like?
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Re: BMW i3 LIM voltage measuring board

Post 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.
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Re: BMW i3 LIM voltage measuring board

Post by asavage »

What forms of payment can you accept?
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Re: BMW i3 LIM voltage measuring board

Post 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
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Re: BMW i3 LIM voltage measuring board

Post by muehlpower »

asavage wrote: Wed Jun 22, 2022 3:25 pm What forms of payment can you accept?
paypal
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Re: BMW i3 LIM voltage measuring board

Post by asavage »

PM sent.
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Re: BMW i3 LIM voltage measuring board

Post by eltisodessa »

Hi, is it still possible to order it to Ukraine?
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Re: BMW i3 LIM voltage measuring board

Post by Jack Bauer »

If its not I'll frigging hand deliver it to you:)
I'm going to need a hacksaw
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Re: BMW i3 LIM voltage measuring board

Post 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.
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Re: BMW i3 LIM voltage measuring board

Post 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 !
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Re: BMW i3 LIM voltage measuring board

Post 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?
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Re: BMW i3 LIM voltage measuring board

Post by windydrew »

Interested
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Re: BMW i3 LIM voltage measuring board

Post by asavage »

I PM'd muehlpower and he sent me a PayPal invoice.
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Re: BMW i3 LIM voltage measuring board

Post by ivankovff »

Congratulations
how can i purchase this board?
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Re: BMW i3 LIM voltage measuring board

Post 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 :(
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Re: BMW i3 LIM voltage measuring board

Post 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
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Re: BMW i3 LIM voltage measuring board

Post 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
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Re: BMW i3 LIM voltage measuring board

Post 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.
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Re: BMW i3 LIM voltage measuring board

Post 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?
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Re: BMW i3 LIM voltage measuring board

Post 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
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Re: BMW i3 LIM voltage measuring board

Post 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.
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Re: BMW i3 LIM voltage measuring board

Post by alexbeatle »

What are minimum wire sizes on the HV and LV sides?
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Re: BMW i3 LIM voltage measuring board

Post 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.
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