优化开始时间的格式为字符串

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

@@ -31,6 +31,7 @@ class SafetyWarning:
         df_res=pd.DataFrame(columns=['start_time', 'end_time', 'product_id', 'code', 'level', 'info','advice'])
 
         time_now=datetime.datetime.now()
+        time_now=time_now.strftime('%Y-%m-%d %H:%M:%S')
         time_sp='0000-00-00 00:00:00'
 
         #参数初始化.......................................