BQ28Z610EVM-532: Learning Cycle

user6251399

Part Number: BQ28Z610EVM-532
Other Parts Discussed in Thread: EV2400

Hi,

The Learning Cycle is measured using EV2400 and BQ28Z610EVM-532.
I entered the commands in the following order according to [SLUA777–June 2016].
1.send command (0x22)
2.send command (0x21)
3.send command (0x41)
Confirmed that QEN flags and RDIS flag are [high].
However, in [4.2.2] operation, [VOK] and [RDIS] registers cannot be confirmed to be cleared.
How do I check?
What is the cause of the [FC] register not being cleared?

Hope to hear from you soon!

over 5 years ago

0 Andy Liu (BMS) over 5 years ago

TI__Guru 52115 points

The [VOK] and [RDIS] bits in the IT status() register clear once the gauge has taken an OCV reading and qualified it for a Qmax update.

Make sure no charger or load is connected to the battery and gauge and have the battery cells relax for 5 hours or longer.

You only need to check whether [FC] is SET when the battery cells are charged to full.

Andy

0 user6251399 over 5 years ago in reply to Andy Liu (BMS)

Prodigy 140 points

[FC] of [chargingstatus] becomes high before the battery cell is fully charged.
Also, [Battery status] remains high.
What factors can be considered?

0 Andy Liu (BMS) over 5 years ago in reply to user6251399

TI__Guru 52115 points

The Charging Status doesn't an FC bit. Also, which bit of the Battery Status are you talking about?

Please double check and make sure all your descriptions are precise.

Andy

0 user6251399 over 5 years ago in reply to Andy Liu (BMS)

Prodigy 140 points

It is FC of gauging status that has changed before charging is completed.

([FC] of [chargingstatus] is wrong.)

What can be considered as a factor that changes the status of [FC] before charging?

0 Andy Liu (BMS) over 5 years ago in reply to user6251399

TI__Guru 52115 points

If you see the FC bit set, it means a valid charge termination occurs and also means the battery cells are fully charged based on your configurations.

Andy

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BQ28Z610EVM-532: Learning Cycle