AutoCycle BQStudio

I am using EV2300. I2C_VOUT for load enable and I2C_SDA pin for charger enable. I'm working with bq40z50.

Then I select at menu AutoCycle>>2 Pin Contorl>>Enable Load - it works, and AutoCycle>>2 Pin Contorl>>Enable Charger - it works too.

But AutoCycle>>Start AutoCycle only keep selected state of load and charger.

How to use AutoCycle?

I need a description of the logic of the program in the AutoCycle mode, even for HDQ output.

Evgeniy, I'm facing the same problem, however i'm using the BQ78350.

How did you solve it?

THX - we will buy a ev2300

I have not solved this problem. I switch cycles manually, but I set the remote access server, and can switch between cycles is the working time from home.

Hello,

Same problem with EV2300 and BQ40Z60.

I wan't to make a Automated learning cycle.

So I test output pin for verify voltage :

I2C.VOUT is OK (toggle beetween 0 and 5Vdc)

I2C.SDA & SCL don't toggle (always about 0V)

HDQ.HDQ don't toggle (always 3.3Vdc)

Is the EV2300 able to do automated learning cycle??

Regards,

Hubert

The optimization cycle procedure looks good. I tested the Automated control signals on the bench and found the I2C:VOUT and HDQ:HDQ options to work, but the I2C:SCL and I2C:SDA signals did not toggle. I will submit as error report to the tools team. I am not sure why the HDQ:HDQ output does not toggle on your EV2300. Are you sure that you are looking at pin 3 on the HDQ connector? Pin 4 (VCC) does remain at 3V. What version of bqStudio are you using? I am using v1.3.52.

Tom

Hello Tom,

First, my FAE send me an other EV2300, so I could try to upgrade FW next week.

Then, my board don't seems to go in rest state after waiting a night+morning (state time is more than 81000s). So I can't finish the manual learning cycle.

You'll find a brief log and .srec here:

5545.bqstudio config.zip

Last, I have a doubt for the final product, when reading your learning method.

Does this learning have to be done on each board ?

Or is it possible to do the learning on one board, then making a firmware that we can use on other board, so they keep the learning of the 1st one?

The problem is that the pack output current is less than C/10 (C=500mA, Current=24mA). And the product is aimed at never be completely discharged...

Regards,

Hubert

Hebert

I have not used the Learning Cycle plug-in in bqStudio, so I cannot comment as to how well it works. I would recommend using the procedure that I presented in this e2e posting.

You just have to run this procedure on one pack and then create a Golden file to use to program packs in production.

You will have to meet the C/10 discharge requirements for Ra table learning to occur and you will have to do full discharges during the Optimization cycle for it to pass.

I have a concern about using the bq40z60 for low charging current applications. The low charging current regulation accuracy is not too good on the charger. Have you verified that the charger runs properly with your setup?

I've not run a log through the entire process.

Just run some log at relevant moment (5 log in the zip file, the first is 160823_01 (charging at 300mA) the last is 160826_05) :

3487.bqstudio config.zip

I'll try to run a full log on Monday.

Rgds,

Hello Tom,

I've done the GPCCHEM test and had the test result in attachment.

If I understand the report, I have 2 choice :

- use the ChemID 1245 with 3.21% of deviation

- send the cell to dallas for new ChemID with less than 3% deviation.

Nota : this time the rest flag was ok for charging and discharging.

Rgds,

160831 - cycle ChemID - PD502540-report.zip

160831 - cycle ChemID - PD502540.zip