BQ40Z80：定制的化学ID7778，进行学习测试在04步骤不更新，QMAX也不更新问题

您好，

是否可以共享未更新的儀表Qmax的日誌文件，以查看此問題是否由chemID引起？

此致，

Anthony

QGP6278146-240929.log8228.6278146-8.2AH roomtemp_rel_dis_rel.csv

你好，

附件log是一个放电未更新Qmax的日志（只记录放电过程，看是否对分析有用），附件CSV是使用的电芯0.1C放电数据，用于匹配化学ID测试出来的；

您好，

感謝您發送這些文件。 您能告訴我們在當前設定中並行使用了多少個單元？ 在GPCCHEM工具數據中，當測試日誌文件指定的設計容量為1000mAh時，放電為~800mA。 設計容量應平行反映電池，如有3個1000mAh電池，設計容量應為3000mAh。

此致，

Anthony

你好，

1.我们使用是6个串联，0并联设计，在电量计里配置的缩小8倍，所以测试设计容量设定1000mAH, 电芯容量8200mAH；
2.CSV文件是对电芯测试0.1C放电数据采集，用于GPCCHEM匹配的; 这个数据能帮忙确认与ID 7778的化学成份是否匹配；理论上是完全匹配（除了容量不一样）
3. 另外说明下：ID7778是我们同一种化学成份的4400mAH电芯申请制作的；理论上是可以使用这个ID7778放在我们同一种化学成份8200mAH电池进行学习后输出量产文件的；

谢谢

您好，

感謝您的澄清。 只是為了確認一下，學習週期是使用功率計而不是物理單元完成的？

此致，

Anthony

Hello;

 Sorry, I didn't understand your question. Are you asking if the learning cycle uses a battery pack instead of a single cell?Or: Yes, the learning phase is to use a power meter, not a physical method; Is what you mean?

Is your question this: Thank you for your clarification. Just to confirm, the learning period is done using a power meter rather than a physical?

您的问题是：感谢您的澄清。只是确认一下，学习阶段是使用功率计而不是物理方法进行的吗？

是的，学习阶段是使用功率计，不是物理方法；

Maybe I can translate it directly into English to better convey the meaning.

Hello;

Can the data currently provided help confirm the causes of some issues? What other data is needed can be informed in advance, we can prepare, or provide some validation methods for us to test and analyze;

Hello,

FeF.wan said:

Is your question this: Thank you for your clarification. Just to confirm, the learning period is done using a power meter rather than a physical?

Yes, I wanted to confirm whether the learning cycle was being done with a power meter or the physical cells. We do not recommend using a power meter since the main purpose of the learning cycle is for the gauge to learn the internal characteristics of the cell in use, where using a power cycle does not fully mimic the cell's characteristics.

If possible, please use the physical cells for the learning cycle and share the .log file if there are issues.

Regards,

Anthony

Proceed according to the Golden Learning method you provided.

Hello,

Understood, please share the results when accomplished.

Regards,

Anthony

6406.5504-4.4AH 241029C.log6254.5504-4.4AH 241029C.gg.csv

Hello

Please refer to the log document and the GG configuration document;

According to the Golden Learning process, after the charging is completed, it cannot changed to 0x05 after resting for 2 hours.

Hello,

In the log file attached, VOK has not cleared from the previous discharge indicating a proper OCV measurement has been taken during the relax in between discharge and charge:

It also seems like the gauge does not enter rest, where the cell is relaxed enough to take a proper OCV measurement, during this relax period as well.

Please ensure there is no current and an ample amount of time in relax between the discharge and charge for a proper OCV measurement to be taken.

Regards,

Anthony

5504-4.4AH 241031C.logHello,

I enabled the power gauge (GAUGE_EN) after the system stabilized, and then started charging. The attached file is the latest log charging and discharging. After the effective termination of charging, it did not change to 0x05, and it did not change after the stabilization was. What other data do you need for analysis?

Hello,

Since we cannot see the data prior to the charge, please confirm whether the necessary bits have moved properly in the relax period before the charge.

If they do not, then this could be causing the issue since these values are relied on for the Qmax update.

Regards,

Anthony

1440.5504-241115.zip

Hello, I have re-collected the data following the Golden Learning process:
1. Discharged the battery to empty without recording logs; voltage was below the configured 19.2V cutoff voltage.
2. Started recording logs and let it rest for over 5 hours; until [REST = 1.
3. Enabled the fuel gauge (GAUGE_EN); waited until VOK=0.
4. Start charging at0.5C, at this point VOK will change from 0 to 1.
5. Charged to the cutoff current and let it rest for over 2 hours until [REST] = 1; QAX did not update; Update Status = 0x04.
6. Continued discharging at 0.2C until the voltage reached the cutoff voltage,18.5V.

Please help analyze and determine the reason for the learning failure. I have used your BQ40Z and BQ28Z610 series products in 10 projects without any issues, and I have even applied for a custom chemistry ID. Thank you

Hello,

FeF.wan said:

3. Enabled the fuel gauge (GAUGE_EN); waited until VOK=0.

Can you please confirm why GAUGE_EN is being sent after the rest period? This step should be completed before the discharge to empty has begun.

We will look over the log file at this time.

Regards,

Anthony