Batrium native implemenatation first working version, some stats missing

This commit is contained in:
Carsten Schmiemann 2023-05-22 02:30:59 +02:00
parent 0c78f7d9b1
commit 21a0f6964c
4 changed files with 59 additions and 30 deletions

View File

@ -85,12 +85,15 @@ class BatriumBattery(can.Listener):
elif msg.arbitration_id == 0x00111900:
logging.debug("Ah 0x00111900 received")
self.AhToFull = round((struct.unpack('>f', bytearray([msg.data[3], msg.data[2], msg.data[1], msg.data[0]])))[0] * 0.001, 2)
self.AhToEmpty = round((struct.unpack('>f', bytearray([msg.data[7], msg.data[6], msg.data[5], msg.data[4]])))[0] * 0.001, 2)
self.capacity = self.AhToEmpty + self.AhToFull
logging.debug("Ah to Full: %2.2f", self.AhToFull)
logging.debug("Ah to Empty: %2.2f", self.AhToEmpty)
logging.debug("Capacity: %2.2f", self.capacity)
# message never arrived, batrium fw bug?
#self.AhToFull = round((struct.unpack('>f', bytearray([msg.data[3], msg.data[2], msg.data[1], msg.data[0]])))[0] * 0.001, 2)
#self.AhToEmpty = round((struct.unpack('>f', bytearray([msg.data[7], msg.data[6], msg.data[5], msg.data[4]])))[0] * 0.001, 2)
#self.capacity = self.AhToEmpty + self.AhToFull
#logging.debug("Ah to Full: %2.2f", self.AhToFull)
#logging.debug("Ah to Empty: %2.2f", self.AhToEmpty)
#logging.debug("Capacity: %2.2f", self.capacity)
elif msg.arbitration_id == 0x00140100:
self.alarm_high_temperature = (msg.data[2] >> 3) & 1
@ -101,8 +104,6 @@ class BatriumBattery(can.Listener):
logging.debug("Low Temperature Alarm: %d", self.alarm_low_temperature)
self.alarm_low_voltage = (msg.data[2] >> 0) & 1
logging.debug("Low Voltage Alarm: %d", self.alarm_low_voltage)
#self.alarm_low_soc = (msg.data[7] >> 2) & 1
logging.debug("Low SOC Alarm: %d", self.alarm_low_soc)
self.alarm_high_charge_current = (msg.data[3] >> 3) & 1
logging.debug("High Charge Current Alarm: %d", self.alarm_high_charge_current)
self.alarm_high_discharge_current = (msg.data[3] >> 4) & 1
@ -113,11 +114,11 @@ class BatriumBattery(can.Listener):
logging.debug("Cell number in bypass: %d", self.NumberInBypass)
elif msg.arbitration_id == 0x00111800:
self.TimeToEmpty = ((msg.data[5] * 256) + msg.data[4])
self.TimeToEmpty = ((msg.data[5] * 256) + msg.data[4] * 60)
logging.debug("Time to empty: %dmin", self.TimeToEmpty)
elif msg.arbitration_id == 0x00111700:
self.TimeToFull = ((msg.data[5] * 256) + msg.data[4])
self.TimeToFull = ((msg.data[5] * 256) + msg.data[4] * 60)
logging.debug("Time to full: %dmin", self.TimeToFull)
elif msg.arbitration_id == 0x00140400:

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@ -38,8 +38,12 @@ def handle_changed_setting(setting, oldvalue, newvalue):
class DbusBatteryService:
def __init__(self, servicename, deviceinstance, productname='Batrium BMS', connection='can0'):
self.minUpdateDone = 0
self.secUpdateDone = 0
self.dailyResetDone = 0
self.lastUpdated = 0
self.cell_balanced = 0
self.ChargedEnergy = 0
self.DischargedEnergy = 0
self._bat = BatriumBattery(connection=connection)
self.notifier = can.Notifier(self._bat._ci, [self._bat])
@ -62,9 +66,6 @@ class DbusBatteryService:
self._dbusservice.add_path('/Connected', 0)
# Create battery specific objects
self._dbusservice.add_path('/Status', None, writeable=True)
self._dbusservice.add_path('/Soh', 100)
#self._dbusservice.add_path('/Capacity', None, writeable=True)
#self._dbusservice.add_path('/InstalledCapacity', None, writeable=True)
self._dbusservice.add_path('/Dc/0/Temperature', None, writeable=True)
self._dbusservice.add_path('/Info/BatteryLowVoltage', None, writeable=True)
self._dbusservice.add_path('/Alarms/CellImbalance', None, writeable=True)
@ -88,8 +89,6 @@ class DbusBatteryService:
self._dbusservice.add_path('/System/MaxVoltageCellId', None, writeable=True)
self._dbusservice.add_path("/System/MinTemperatureCellId", None, writeable=True)
self._dbusservice.add_path("/System/MaxTemperatureCellId", None, writeable=True)
#self._dbusservice.add_path('/System/MinCellTemperature', None, writeable=True)
#self._dbusservice.add_path('/System/MaxCellTemperature', None, writeable=True)
self._settings = SettingsDevice(
bus=dbus.SystemBus() if (platform.machine() == 'armv7l') else dbus.SessionBus(),
@ -110,7 +109,8 @@ class DbusBatteryService:
'/Dc/0/Voltage': {'gettext': '%.2F V'},
'/Dc/0/Current': {'gettext': '%.2F A'},
'/Dc/0/Power': {'gettext': '%.0F W'},
'/Soc': {'gettext': '%.0F %%'},
'/Soc': {'gettext': '%.0F%%'},
'/Soh': {'gettext': '%.0F%%'},
'/History/TotalAhDrawn': {'gettext': '%.0F Ah'},
'/History/DischargedEnergy': {'gettext': '%.2F kWh'},
'/History/ChargedEnergy': {'gettext': '%.2F kWh'},
@ -134,13 +134,17 @@ class DbusBatteryService:
self._dbusservice.add_path('/History/TimeSinceLastFullCharge', 0)
self._dbusservice.add_path('/History/MinCellVoltage', self._settings['MinCellVoltage'])
self._dbusservice.add_path('/History/MaxCellVoltage', self._settings['MaxCellVoltage'])
self._dbusservice['/ConsumedAmphours'] = self._bat.AhToEmpty
self._dbusservice['/Soh'] = 100
self._dbusservice['/Status'] = 0
logging.info("History cell voltage min: %.3f, max: %.3f, totalAhDrawn: %d",
self._settings['MinCellVoltage'], self._settings['MaxCellVoltage'], self._settings['TotalAhDrawn'])
self._dbusservice['/History/ChargedEnergy'] = 0
self._dbusservice['/History/DischargedEnergy'] = 0
if self._bat.soc <= 99:
self._dbusservice['/Soc'] = self._bat.soc
elif self._bat.soc > 100:
self._dbusservice['/Soc'] = 100
GLib.timeout_add( self._settings['interval'], exit_on_error, self._update)
@ -154,7 +158,6 @@ class DbusBatteryService:
self._safe_history()
logging.info('Stopping dbus_Batrium')
def _safe_history(self):
logging.debug('Saving history to localsettings')
self._settings['AvgDischarge'] = self._dbusservice['/History/AverageDischarge']
@ -162,18 +165,18 @@ class DbusBatteryService:
self._settings['MinCellVoltage'] = self._dbusservice['/History/MinCellVoltage']
self._settings['MaxCellVoltage'] = self._dbusservice['/History/MaxCellVoltage']
def _daily_stats(self):
if (self._dbusservice['/History/DischargedEnergy'] == 0): return
logging.info("Updating stats, SOC: %d, Discharged: %.2f, Charged: %.2f ",self._bat.soc, self._dbusservice['/History/DischargedEnergy'], self._dbusservice['/History/ChargedEnergy'])
self._dbusservice['/History/AverageDischarge'] = (6*self._dbusservice['/History/AverageDischarge'] + self._dbusservice['/History/DischargedEnergy'])/7 #rolling week
self._dbusservice['/History/ChargedEnergy'] = 0
self.ChargedEnergy = 0
self._dbusservice['/History/DischargedEnergy'] = 0
self.DischargedEnergy = 0
dt = datetime.now() - datetime.fromtimestamp( float(self._settings['TimeLastFull']) )
self.dailyResetDone = datetime.now().day
def _update(self):
#logging.debug("Update CAN %d, Time Now: %d", self._bat.updated, self.lastUpdated)
time = datetime.now()
@ -203,21 +206,24 @@ class DbusBatteryService:
self._dbusservice['/Alarms/HighDischargeCurrent'] = 2
else:
self._dbusservice['/Alarms/HighDischargeCurrent'] = 0
if self._bat.alarm_low_soc:
self._dbusservice['/Alarms/LowSoc'] = 2
else:
self._dbusservice['/Alarms/LowSoc'] = 0
if (self._bat.updated != -1 and self.lastUpdated == 0) or ((self.lastUpdated - self._bat.updated) < 10):
self._dbusservice['/Connected'] = 1
else:
self._dbusservice['/Connected'] = 0
self._dbusservice['/Soc'] = self._bat.soc
if self._bat.soc <= 99:
self._dbusservice['/Soc'] = self._bat.soc
elif (self._bat.soc > 99) and (self.cell_balanced):
self._dbusservice['/Soc'] = 100
if self._bat.NumberInBypass != 0:
self._dbusservice['/Balancing'] = 1
else:
self._dbusservice['/Balancing'] = 0
#self._dbusservice['/ConsumedAmphours'] = self._bat.AhToFull --- not working, Batrium not transmitting
self._dbusservice['/ConsumedAmphours'] = ((100 - self._dbusservice['/Soc']) / 100) * self._bat.capacity
self._dbusservice['/InstalledCapacity'] = self._bat.capacity
self._dbusservice['/Capacity'] = self._bat.capacity
self._dbusservice['/Dc/0/Current'] = self._bat.current
@ -233,6 +239,7 @@ class DbusBatteryService:
self._dbusservice['/Info/MaxChargeVoltage'] = self._bat.maxChargeVoltage
self._dbusservice['/System/NrOfModulesOnline'] = self._bat.numberOfModules
self._dbusservice['/System/NrOfBatteriesBalancing'] = self._bat.NumberInBypass
self._dbusservice['/System/BatteriesSeries'] = self._bat.numberOfModules
#update energy statistics daily at 6:00,
@ -262,13 +269,34 @@ class DbusBatteryService:
if self._bat.current > 0:
#charging
self._dbusservice['/TimeToGo'] = self._bat.TimeToFull * 60
if self._bat.NumberInBypass < 80000:
self._dbusservice['/TimeToGo'] = self._bat.TimeToFull
else:
self._dbusservice['/TimeToGo'] = None
else :
#discharging
self._dbusservice['/TimeToGo'] = self._bat.TimeToEmpty * 60
if self._bat.NumberInBypass < 80000:
self._dbusservice['/TimeToGo'] = self._bat.TimeToEmpty
else:
self._dbusservice['/TimeToGo'] = None
if self._bat.NumberInBypass == self._bat.numberOfModules:
self.cell_balanced = True
elif self._bat.NumberInBypass == 0:
self.cell_balanced = False
self._safe_history()
if now.second != self.secUpdateDone:
self.secUpdateDone = now.second
#Workaround because of missing messages of Batrium BMS
if power > 0:
self.ChargedEnergy += (power / 3600.0) / 1000
if power < 0:
self.DischargedEnergy += (power / 3600.0) / 1000
self._dbusservice['/History/ChargedEnergy'] = abs(self.ChargedEnergy)
self._dbusservice['/History/DischargedEnergy'] = abs(self.DischargedEnergy)
return True
def main():

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@ -1,3 +1,3 @@
#!/bin/sh
exec 2>&1
exec softlimit -d 100000000 -s 1000000 -a 100000000 python /data/dbus_batrium_native/dbus_batrium_native.py -i can0 -c 300
exec softlimit -d 100000000 -s 1000000 -a 100000000 python /data/dbus-batrium-native/dbus-batrium-native.py