Part Number:BQ34Z100-G1
Dear TI Experts,
My customer are designing a 3s1p pack with BQ34Z100-G1. They don't how to set Design Energy and Calibrate Voltage. For instance, if single cell is 3.7V, 1000mAH,
Could you kindly give some adive about it? Thanks a lot.
Part Number:BQ78350-R1
Hello,
Following communication problems with the BQ78350-R1 of our BMS (disturbances coming from 230V AC), I am trying to activate the PEC on the SMBus link.
I set the HPE bit to 1 in the SMB Configuration register (0x4462) and a reading confirms the correct writing.
The host consists of an STM23L496 where the PEC is activated on the SMBus controller.
In writing, the PEC is sent by the STM32. In reading, the value returned by the BQ78350-R1 is constantly at 0.
See the oscilloscope captures below
Writing (correct) :
Reading (PEC @ 0x00):
I can provide writing of the SMB Configuration register.
Thank you for your answer,
Views
Part Number:BQ20Z45-R1
Hi there,
We've been attempting to create a new Golden File for the Panasonic NCR18650PF Li-ion cells with our battery controller but are having difficulty getting the final cell balancing to take effect and having the Update Status change to 0x0E. There is a chem file for these Panasonic cells within the bq Evaluation Software that we have been using.
We are currently nearing the end of our second attempt at generating the Golden File; the cells are in their last charge cycle, and the Update Status still reads 0x0D rather than 0x0E. We've been following a procedure each time as outlined in the following broad steps:
1) Setting the data flash parameters to match the application and chosen battery cells (most of these parameters were carried over from the data flash settings used with Molicel ICR18650M cells that we've already had success creating a Golden File for; both cells will be used in the same battery pack for the same application so any differences between their data flash settings were to account for the differences in cell characteristics between the Molicel and Panasonic cells).
2) Initial programming and calibration of the battery pack.
3) Discharge and charge cycles so the bq20z45-R1 can "learn" the cell's capacity and characterize the cell's impedance during discharge. We enable impedance tracking after the initial discharge. Excluding the initial discharge, we've been doing 3 charges and 2 discharges at about 260mA each (total battery pack capacity is about 11600mAh as we use 4 of the Panasonic NCR18650PF cells per pack) with 8+ hours between charges and discharges to allow the cells to rest.
I can provide more details as to the steps we've been following if needed. Is there anything that we can do differently that might improve our chances of success with generating the Golden File?
Thanks in advance.
Part Number:BQ34Z100-G1
is there an application engineer available for phone support ?
Part Number:BQ27742-G1
I have 3 queries related to the parameters mentioned in title:
1. Maximum value of Design Voltage is 5000 mV and maximum value of Design Capacity is 14500 mAh. With that maximum values, Design Energy = 5.0 V * 14500 mAh = 72500 mWh. Why maximum value of Design Energy is not 72500 mWh? (In datasheet maximum value of Design Energy is 32767 mWh)
2. The pack configuration that I have is 1s4p, battery capacity is 2600 mAh, so, I have a pack configuration with 10400 mAh. If Design Voltage is 3.6 V I have a Design Energy of 37440 mAh. But if I try to set this value, I can´t because maximum value is 32767 mWh. What are the consequences of setting 32767 mWh when the real current energy is 37440 mWh?
3. I have other pack configuration, 1s6p. Same problem setting the real Design Energy, but also, in this case, the Design Capacity is 15600 mAh and the maximum value for BQ27742-G1 is 14500 mAh. So, there's a way to set de real capacity?, and if not, what problem will there be if I can not set the real capacity?
Part Number:GASGAUGECHEM-SW
I went to http://www.ti.com/tool/GASGAUGECHEM-SW
Part Number:BQ40Z50-R1
Hello,
I would like to programm data flash (0x4000 to 0x5FFF) of the BQ40Z50-r1 with an EV2300 and labview.
I write all the data flash but after the adress 0X5F80, I can't write anything. Between 0X5F80 and 0x5FFF, all the data are 0..
Do you have answer for me ?
Thanks for your reply
Aurélien
Part Number:BQ27Z561
Does anyone know what would happen if I didn't follow the example layout and use the red box layout?
Part Number:BQ78350-R1
I am trying to enable the over current in discharge protection feature on the BQ78350-R1, however it seems to have no effect.
First, the datasheet isn't very consistent with the CC_DSC_OFF and DC_CHG_OFF flags, it's written:
The CHG FET will turn off for the OCD, OCDL, AOLD, AOLDL, ASCD, and ASCDL faults when [DC_CHG_OFF] in Protection Configuration is set. The DSG FET will turn off for the OCC faults when [CC_DSG_OFF] in Protection Configuration is set.
The way I understand it is: the charge FET is disabled when a discharge fault occurs and the discharge FET is disabled when a charge fault occurs. This makes little sense to me...
For my test I have enabled both the CC_DSC_OFF and DC_CHG_OFF flags in the protection configuration (just to be sure). Then in Enabled Protections A register I enabled the OCD flag. I set the OCD threshold to -500mA and the delay to 2 seconds. While discharging at 1A the safety flag doesn't even get enabled (in bqStudio) and the protection does not work.
Am I missing some other obscure setting?
Part Number:BQ40Z50-R1
Hi,
I did a learning cycle for an 4S3P battery with BQ40Z50-R1 and ANR26650-M1B (ChemID 465). According to SLUA777 after a calibration of the BMS (hint missing in the documentation) I followed the instructions from the documentation.
Starting with discharging the Battery both stated methods didn't work out properly for me (see 4.2.1). Every flag occured like in the description, but UpdateStatus never updated to a higher level (e.g. 05 or 06 or 0e). Even the REST-Flag occured.
1) Every cycle had a change of ~7500mAh, but BQ FullChargeCapacity is only 7047mAh. How could this happen?
2) Why is Cell Qmax much higher than 7500mAh?
Device Name = bq40z50R1
Firmware Version = V1_06_BLD0036
See attached logfiles and configurations.
Thanks for your hint/explanations
Simon
Part Number:BQ27542-G1
Dear all :
My question:
The following errors were reported by the calculation engine:
Error: negative low temperature resistance observed, R=-1.61973095533587 usually caused by wrong chem ID selection 0 0
Is here any one can tell me how to do?
chem id:0188
Package which I uploaded:
(Please visit the site to view this file)
Part Number:BQ40Z80EVM-020
I'm using the BQ40Z80EVM with 6S LiPo Battery but it fail to run correctly.
As in the manual I shorted the connection between 6P and 7P in the battery connector J12.
I disabled VC7SENS and VC7EN in pin configuration.
The problem is that I have CUV and CUVC set and I'm not able to clear it. I used all command available.
What's wrong?
Regards
Part Number:BQ34110
Tool/software: Linux
Hi,
What is the status of Linux drivers for BQ34110? I searched around online and couldn't find drivers anywhere. Could you please let me know if they are currently available, and if they aren't, please provide an approximate timeline for when they will become available?
Thank you.
Part Number:BQ2060
My name is Denny Beasley and I work for NPC (national power company) and we have our automated test program platform for battery products we manufacture. We have a customer with a custom battery pack using the BQ2060A and I need to unseal the pack. Where can I get the information to do this. I realize this is not something that you pass out without qualification and am willing to verify to you satisfaction. Or provide me with a phone number of someone in technical assistance. my email is dbeasley@nationalpower.com
Part Number:BQ20Z75
I have a system in which there is a both a smart battery charger ( LTC4100) and a host processor.
With the host processor off, I see normal broadcast events of both the current and voltage about every 50 seconds and the smart charger works normally.
When the host processor turned and reading a number of registers from the BQ20Z75 , there are a number of transactions in which only the first message to the smart charger is sent and the 2nd message is never sent.
Specifically I see the write to the charger IC for the current, but the write to the charger IC with the voltage does not occur. The issue is that eventually the charger IC timing out and stopping charging.
Now the Host is generating a fair amount of smbus traffic to the BQ20Z75 to read status and the current - about once a second in a burst of reading status, voltage , current and relative state of charge.
It may be that the Host software (Linux/ Android) is not a good SMBus citizen, and I suspect that there is a conflict, but I've not been able to capture it on a scope or logic analyzer.
As near as I can tell the timing looks to be with in the specs for SMBus.
Is there a specific time limit or timeout or other conditions at which the BQ20z75 will abort the 2nd half of the transmission?
Part Number:BQ20Z95
Dear TI Experts,
My customer want to know the difference between BQ20Z95 with BQ20Z65-R1 . Is BQ20Z65-R1 the upgrated version of BQ20Z95 ? Thanks a lot.
Part Number:BQ20Z95
Hello TI
Finally I have received the .senc file from our batterymanufacturer. Is this helful for analysis of the problem described in the now closed thread that this links to?
(Please visit the site to view this file)
