Merge remote-tracking branch 'origin/dev' into pro

LIB/MIDDLE/CellStateEstimation/BatSafetyWarning/V1_0_1/CBMSBatInterShort.py

@@ -97,8 +97,6 @@ class BatInterShort():
                 cellvolt=df_volt.mean(0)/1000
             else:
                 cellvolt=pd.DataFrame()
-        elif len(df_volt)==1:
-            cellvolt=df_volt.iloc[0]/1000
         else:
             cellvolt=pd.DataFrame()
         return cellvolt