BQ78350: Overcharge Protection is detected in my gauge, but the remaining capacity and the full charge capacity are the same.

Lu Feiyue

Part Number: BQ78350
Other Parts Discussed in Thread: BQSTUDIO

In the user manual, I notice that the OC protection is tripped when the remaining capacity >= the full charge capacity + OC : threshold.

The parameter, OC threshold , is default.

But the remaining capacity and the full charge capacity are the same in the bqstudio.

Why?

over 6 years ago

0 David Hien over 6 years ago

TI__Genius 10830 points

hi Feiyue,

I wanted to let you know that your post has been assigned to one of our applications engineers. This week takes place our annual Battery Management Deep Dive event for which all our engineers are all hands on deck. He will be able to your post early next week, once this event is over.

You can check out recordings of much of the material we present at www.ti.com/deepdive

Thank you for your understanding!

0 Matt Sunna over 6 years ago

TI__Guru* 81034 points

Hi Feiyue,

Remaining Capacity will never report higher than Full Charge Capacity in the device registers. However, internally it is tracked to higher values to protect against over charge.

Best regards,
Matt

0 Lu Feiyue over 6 years ago in reply to Matt Sunna

Intellectual 660 points

Thanks a lot, I understand it.

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BQ78350: Overcharge Protection is detected in my gauge, but the remaining capacity and the full charge capacity are the same.