Sv: Breaking: Offisiell ladeinformasjon for Norge og EU

[one careful owner]

Please, does anyone know how long the charging break is at 80% SOC with a ZEBRA battery?
I believe that 30 minutes waiting is normal for the BMS to do some balancing.
But what if it takes two hours or more before the charger starts again to do the last bit to 105% SOC?

[StianB]

Please, does anyone know how long the charging break is at 80% SOC with a ZEBRA battery?
I believe that 30 minutes waiting is normal for the BMS to do some balancing.
But what if it takes two hours or more before the charger starts again to do the last bit to 105% SOC?

Did you solve your issue?  My think zebra also stops at 80% for hours and hours... and never complete the charge.

Br Stian

[hma]

The Zebra-battery stops charging at 80% SOC to do an "Open Circuit Voltage Measurement" (OCVM). This is done to detect the number of failed cells for calculation of maximum battery voltage at End of Charge.
If no failed cells, EOC is detected at ~384V, if one dead cell (per string) EOC is detected at ~379V, etc.

OCVM turns main switch and battery DC-heater off. It pauses for 5 minutes and starts measuring some integral current. The process of measuring usually takes about 30 minutes, then the main switch is turned on and the charge can continue.
However the charge from 80-100% (EOC) can take several hours, depending on the battery health. Maybe from 3-5 hours.


In the case of 'StianB', there is a chance that the calibration of electronic SOC (made by the BMI) is out of synch with the real chemical SOC.
This problem happens if the battery is charged several time without executing OCVM (at 80% SOC). E.g. if the car is used over a long period in the range of [0-79% SOC] or [81-100% SOC].

When the car charge and reaches maximum voltage, e.g. 384V, and the SOC<80%, then the BMI will never allow detection of End Of Charge. You will experience a car that stops charging at 80% SOC (or less).

To get around this problem you need special SW and some password/codes from FZ Sonic. This can be done only by Elbilmek Fornebu, Røhne Selmer Sandvika or Trøndelag Elbilforening Trondheim.

Hope this helps.

[StianB]

this happened first approximately mid February, I delivered the car for repair aprox 24th of February.   bilkilden finally got all codes etc and finished the repair at 2nd of April.  The car charged to 100% 1-3 times. Now it is broken again (stops charging at approximately 80%). I think this happened first time in February after a car wash.

Br Stian