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| BQ34Z100-G1: Training material for the golden unit | |
| Part Number: BQ34Z100-G1 Dear team, our customer is developing his own battery pack based on 5S NiMH cells. The battery cell planned is VH1800AA. They selected BQ34Z100-G1 The customer told me they did not receive the chemistry files from the cell manufacturer and will have to create their own golden image file. (Or can we look up this type of battery in BQ Studio?) The customer is wondering if there was training material he could follow to do create the golden image. He would also want to have design reviewed. I do have the schematic and battery information under NDA but this needs to be done offline. How can we do this? Would BQ34Z100-G1 be the best part or should they move to BQ34110 or some other part? There will be a MCU in the pack as the customer has his own LED indication scheme - so no use of the LED feature of BQ34Z100-G1. many thanks Lutz | |
| Please use the instructions from <secret URL>/tool/GPCCHEM to find a ChemID. Make sure that the charge termination configuration is appropriate for NiMH cells (see TRM, 3.2.16 Charge Efficiency and 3.7 Charging and Charge Termination Indication). For a golden image, you must configure the ChemID, charge termination, system parameters (e.g. Terminate Voltage, load configuration, discharge/charge/quit thresholds) and then run a learning cycle: <secret URL>/how-perform-successful-learning-cycle-gauges | |
| Thanks Dominik, this is very helpful. We will go a ahead an create try to create the golden image. Could you also comment on the question if BQ34Z100 is the better choice over BQ34110 or are both equal options? Also how could we check the customer's schematic offline. Should I just send it to you? thanks Lutz | |
| These two gauges use totally different gauging algorithms. It depends on the application which one is better. In general, the bq34z100 is likely to handle more applications over larger temperatures. The bq34110 is better suited for rarely discharged applications and has the ability to estimate cell deterioration even without full discharges. | |
| OK, I see, many thanks, I will discuss with the customer. Lutz | |