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tinfever / FU-Dyson-BMS

(Unofficial) Firmware Upgrade for Dyson V6/V7 Vacuum Battery Management System
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When the charger is disconnected from mains electricity, the vacuum cleaner will work briefly #55

Open turenabo opened 3 months ago

turenabo commented 3 months ago

hi, Tinfever, I have been using your firmware for half a year and it is very good. I have also learned a lot of BMS knowledge. Today, I found a new problem. When the battery is charging, the charger is unplugged from the mains. At this time, the battery cannot detect that the charger has been powered off. The charging blue light is always on, but it will go out after about half a minute. At the same time, the vacuum cleaner will work briefly, and the red light comes on. I tried it several times and the phenomenon is the same every time. There are two questions here. 1) Why can't the battery detect that the charging stops when the charger is powered off? 2) Why does the vacuum cleaner work briefly after about 30 seconds? Is it because the battery management chip turns on the MOSFET before initialization?

turenabo commented 3 months ago

One more thing to add, after the original battery is unplugged from the mains, the blue charging light will stay on for about 30 seconds and then go out, but the vacuum cleaner will not work for a short time.