Hi Vivek,
See figure 8-1 of the data sheet, the Arduino becocmes the "companion controller". Reduce cells according to table 8-1. Refer to the EVM schematic and application notes for details of a complete circuit example instead of simplified.
If you…
Hi Vinay,
It sounds like you need a gauge for each battery, then a MCU to read the SOC of each battery to decide which to enable with separate load switches. You would also need to decide whether provide a charger for each battery or a single charger…
Hi,
The Battery Management Studio v1.3.54 contains the GPCPackager tool for devices like BQ4050, but I am not able to find it for BQ27742-G1. How do I create the zip file (for uploading in the web tool as advised in the link) for determination of chemistry…
Hi Sachin,
The bq4050 or bq40z50 would support 2-4 cells in a single IC as noted in your other post. For 5 cells the bq76920 monitor with a bq78350-R1 gauge or MCU and a high side driver such as bq76200 would be a soluiton. The bq76925 might be used…
I would not use any of the multi-cell Impedance Track gauges in a system side application. They use Qmax and the Ra tables for gauging and it will probably take a few cycles to update these parameters to match your new set of cells. In addition and more…
Hi John,
With a 12V battery you likey have 3 or 4 series cells. For simple measurement the bq76920 monitor will allow measurement of the voltage, temperature and current from the battery, all as digital data over I2C. It supports 3-5 cells, and includes…
Hi Bilal,
1. If native units are 2 mV and the value stored is 0x01, the parameter is 2 mV. If the value stored is 0x06 the parameter is 12 mV. To make this more confusing BQStudio will do the conversion for us sometimes, the parameter will display 12…
Hi User4973896,
1) Thank you for the warm wishes. I have passed them along to David - due to the complexity/technical nature of the questions posed, he has asked me to answer your remaining questions.
2) For a pack side gauge from 2S-4S, the bq40z50…
Hello,
Thanks for the inputs.
1) We shall make sure of the TS1 edge, thanks for pointing this out.
2) Yes the ISO1540 has been powered through an LDO driven from main battery power. We dont need a USB interface as such, just want to have it to…
Hi Andu Liu,
Here is the PDF format of the Scimatic attached below. Kindly go through the schematic attached below and make some suggestions(if necessary) to improve the schematic.
BMS_sch.pdf
Thanks & Regards
- Himavanth reddy
