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AEK-POW_BMS63EN Current, NTC measurement and fault LED

trishuynh
Associate II

‎2024-07-16 01:27 AM

Dear community members,

I have three questions about the AEK-POW_BMS63EN require answers and input from experts:

1. After running the example of AEK-POW_BMS63EN, everything is ok; however, the fault LED on  is always high in AEK-COM-ISOSPI1 even thought the F1 and F2 parameters are 0. Is there any issue related to the board or system?

2. How to place the NTC sensor on the AEK-POW-BMSHOLD (the manual does not state this clearly)?

3. Is there any function to read current of each cell?

 

Any help would be very much appreciated.

TH.

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Max VIZZINI
ST Employee

‎2024-07-16 03:28 AM

Hi,

  1. After running the example of AEK-POW_BMS63EN, everything is ok; however, the fault LED on  is always high in AEK-COM-ISOSPI1 even thought the F1 and F2 parameters are 0. Is there any issue related to the board or system?

The FAULTL LED will turn even if there is an active OVERLATCH and not only with F1 and F2 registers. An OVL can be detected even when NTCs are not connected, therefore not having proper temperature values.

  1. How to place the NTC sensor on the AEK-POW-BMSHOLD (the manual does not state this clearly)?

There are 2 wires for each NTC in the AEK-POW-BMSHOLD. It should be blue and yellow. Each pair of wires connects to single NTC. They have no polarity as they are like resistors.

  1. Is there any function to read current of each cell?

 

The current of each cell is the same because the cells are in series.

Best Regards,

AutoDevKit Team

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