Is there any way to monitor a Non-rechargable Li-ion battery(28V) ?

Ravi P1

Other Parts Discussed in Thread: BQ35100

we have a non-rechargeable li-ion battery of 28 volts used in high current application. I would like to know if there is any Fuel gauging IC to monitor the health of the battery.

over 6 years ago

0 Onyx Ahiakwo over 6 years ago

TI__Guru* 76230 points

Hi Ravi,

You can use the bq35100 in accumulator mode.

thanks

Onyx

0 Ravi P1 over 6 years ago in reply to Onyx Ahiakwo

Prodigy 30 points

HI Onyx,

Thank you for the reply. I have gone through the datasheet of BQ35100 and found that Vbat is 5.5 Maximum,

1. So should i reduce the input voltage from 28V to 5.5V using a potential divider and then use the same IC? I am wondering if doing this will give accurate data.

2. And also can it measure high current flow (1A) ?

I am new to selecting battery gauges so please excuse me if my questions sound dumb. I would like to learn more about operation of fuel gauges and their selection. Please share links of any learning resources which would enable me to understand this concept better.

Thanks

Ravi

0 Onyx Ahiakwo over 6 years ago in reply to Ravi P1

TI__Guru* 76230 points

Hello Ravi,

Our EVM user guide for the bq35100 has a reference schematic that shows how the voltage divider should be connected when you have more than one cell in series.

2. The gauge can measure 1A.

To learn more about battery gauging, see videos below:

https://e2e.ti.com/blogs_/archives/b/fullycharged/archive/2014/07/02/video-battery-management-university-fuel-gauging-101?keyMatch=battery%20university&tisearch=Search-EN-Support

thanks

Onyx

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Is there any way to monitor a Non-rechargable Li-ion battery(28V) ?