Louisvdw / dbus-serialbattery

Battery Monitor driver for serial battery in VenusOS GX systems
MIT License
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When Absortion mode is finished and Float should come. Victron quattro charger remains in Abs #976

Closed AlexdeKairos closed 8 months ago

AlexdeKairos commented 8 months ago

Describe the bug

Im using LINEAR_LIMITATION_ENABLE = False CVCM_ENABLE = True And all temperature limitations OFF.

After Absortion (Step Mode) mode is reach, Charge limitation goes to Max Battery Charge current instead of the suposed low charge mode. But when reaching Float voltage goes to the expected voltage, but my Victron quattro charger remains in Absortion, althought the voltage is the corresponding to float

How to reproduce

Just do a charge up to max 100%.

Expected behavior

The expected behaivour is that the charger must show Float mode and Float voltage Screenshot_20240215_174846_VRM Screenshot_20240215_175356_VRM

Driver version

1.1.20240215dev

Venus OS device type

Cerbo GX

Venus OS version

3.14

BMS type

Smart BMS (LLT, JBD, Overkill Solar)

Cell count

4

Battery count

2

Connection type

Please select

Config file

[DEFAULT]

LOGGING = INFO
MAX_BATTERY_CHARGE_CURRENT = 150.0
MAX_BATTERY_DISCHARGE_CURRENT = 150.0
MIN_CELL_VOLTAGE   = 3.000
MAX_CELL_VOLTAGE   = 3.600
FLOAT_CELL_VOLTAGE = 3.400
BLUETOOTH_BMS = LltJbd_Ble A5:C2:37:05:95:9E, LltJbd_Ble A5:C2:37:05:95:B6
;BLUETOOTH_BMS = LltJbd_Ble A5:C2:37:05:95:B6
BLUETOOTH_USE_USB = True

; --------- SOC reset voltage ---------
; Description: May be needed to reset the SoC to 100% once in a while for some BMS, because of SoC drift.
;              Specify the cell voltage where the SoC should be reset to 100% by the BMS.
;                - JKBMS: SoC is reset to 100% if one cell reaches OVP (over voltage protection) voltage
;              As you have to adopt this value to your system, I reccomend to start with
;              OVP voltage - 0.030 (see Example).
;                - Try to increase (add) by 0.005 in steps, if the system does not switch to float mode, even if
;                  the target voltage SOC_RESET_VOLTAGE * CELL_COUNT is reached.
;                - Try to decrease (lower) by 0.005 in steps, if the system hits the OVP too fast, before all
;                  cells could be balanced and the system goes into protection mode multiple times.
; Example: If OVP is 3.650, then start with 3.620 and increase/decrease by 0.005
; Note: The value has to be higher as the MAX_CELL_VOLTAGE
SOC_RESET_VOLTAGE  = 3.650
; Specify after how many days the soc reset voltage should be reached again
; The timer is reset when the soc reset voltage is reached
; Leave empty if you don't want to use this
; Example: Value is set to 15
; day 1: soc reset reached once
; day 16: soc reset reached twice
; day 31: soc reset not reached since it's very cloudy
; day 34: soc reset reached since the sun came out
; day 49: soc reset reached again, since last time it took 3 days to reach soc reset voltage
SOC_RESET_AFTER_DAYS =

; --------- Charge mode ---------
; Choose the mode for voltage / current limitations (True / False)
; False is a step mode: This is the default with limitations on hard boundary steps
; True is a linear mode:
;     For CCL and DCL the values between the steps are calculated for smoother values (by WaldemarFech)
;     For CVL max battery voltage is calculated dynamically in order that the max cell voltage is not exceeded
LINEAR_LIMITATION_ENABLE = False

; Specify in seconds how often the linear values should be recalculated
LINEAR_RECALCULATION_EVERY = 120
; Specify in percent when the linear values should be recalculated immediately
; Example: 5 for a immediate change, when the value changes by more than 5%
LINEAR_RECALCULATION_ON_PERC_CHANGE = 5

; --------- Charge Voltage limitation (affecting CVL) ---------
; Description: Limit max charging voltage (MAX_CELL_VOLTAGE * cell count), switch from max voltage to float
;              voltage (FLOAT_CELL_VOLTAGE * cell count) and back
;     False: Max charging voltage is always kept
;     True: Max charging voltage is reduced based on charge mode
;         Step mode: After max voltage is reached for MAX_VOLTAGE_TIME_SEC it switches to float voltage. After
;                    SoC is below SOC_LEVEL_TO_RESET_VOLTAGE_LIMIT it switches back to max voltage.
;         Linear mode: After max voltage is reachend and cell voltage difference is smaller or equal to
;                      CELL_VOLTAGE_DIFF_KEEP_MAX_VOLTAGE_UNTIL it switches to float voltage after 300 (fixed)
;                      additional seconds.
;                      After cell voltage difference is greater or equal to CELL_VOLTAGE_DIFF_TO_RESET_VOLTAGE_LIMIT
;                      OR
;                      SoC is below SOC_LEVEL_TO_RESET_VOLTAGE_LIMIT
;                      it switches back to max voltage.
; Example: The battery reached max voltage of 55.2V and hold it for 900 seconds, the the CVL is switched to
;          float voltage of 53.6V to don't stress the batteries. Allow max voltage of 55.2V again, if SoC is
;          once below 80%
;          OR
;          The battery reached max voltage of 55.2V and the max cell difference is 0.010V, then switch to float
;          voltage of 53.6V after 300 additional seconds to don't stress the batteries. Allow max voltage of
;          55.2V again if max cell difference is above 0.080V or SoC below 80%.
; Charge voltage control management enable (True/False).
CVCM_ENABLE = True

; -- CVL reset based on cell voltage diff (linear mode)
; Specify cell voltage diff where CVL limit is kept until diff is equal or lower
CELL_VOLTAGE_DIFF_KEEP_MAX_VOLTAGE_UNTIL = 0.010
; Specify cell voltage diff where CVL limit is reset to max voltage, if value get above
; the cells are considered as imbalanced, if the cell diff exceeds 5% of the nominal cell voltage
; e.g. 3.2 V * 5 / 100 = 0.160 V
CELL_VOLTAGE_DIFF_TO_RESET_VOLTAGE_LIMIT = 0.080

; -- CVL reset based on SoC option (step mode & linear mode)
; Specify how long the max voltage should be kept
;     Step mode: If reached then switch to float voltage
;     Linear mode: If cells are balanced keep max voltage for further MAX_VOLTAGE_TIME_SEC seconds
MAX_VOLTAGE_TIME_SEC = 900
; Specify SoC where CVL limit is reset to max voltage
;     Step mode: If SoC gets below
;     Linear mode: If cells are unbalanced or if SoC gets below
SOC_LEVEL_TO_RESET_VOLTAGE_LIMIT = 80

; --------- Cell Voltage Current limitation (affecting CCL/DCL) ---------
; Description: Maximal charge / discharge current will be in-/decreased depending on min and max cell voltages
; Example: 18 cells * 3.55V/cell = 63.9V max charge voltage
;          18 cells * 2.70V/cell = 48.6V min discharge voltage
;          But in reality not all cells reach the same voltage at the same time. The (dis)charge current
;          will be (in-/)decreased, if even ONE SINGLE BATTERY CELL reaches the limits

; Charge current control management referring to cell-voltage enable (True/False).
CCCM_CV_ENABLE = False
; Discharge current control management referring to cell-voltage enable (True/False).
DCCM_CV_ENABLE = False

; Set steps to reduce battery current
; The current will be changed linear between those steps if LINEAR_LIMITATION_ENABLE is set to True
CELL_VOLTAGES_WHILE_CHARGING   = 3.61, 3.55, 3.50, 3.45
MAX_CHARGE_CURRENT_CV_FRACTION =    0, 0.05,  0.5,   1

CELL_VOLTAGES_WHILE_DISCHARGING   = 2.70, 2.80, 2.90, 3.10
MAX_DISCHARGE_CURRENT_CV_FRACTION =    0,  0.1,  0.5,    1

; --------- Temperature limitation (affecting CCL/DCL) ---------
; Description: Maximal charge / discharge current will be in-/decreased depending on temperature
; Example: The temperature limit will be monitored to control the currents. If there are two temperature senors,
;          then the worst case will be calculated and the more secure lower current will be set.
; Charge current control management referring to temperature enable (True/False).
CCCM_T_ENABLE = False
; Charge current control management referring to temperature enable (True/False).
DCCM_T_ENABLE = False

; Set steps to reduce battery current
; Valores exactos obtenidos de CATL. The current will be changed linear between those steps if LINEAR_LIMITATION_ENABLE is set to True
TEMPERATURE_LIMITS_WHILE_CHARGING = 0,   2,     5,    10,    15,20, 35, 40,  55,  60,  65
MAX_CHARGE_CURRENT_T_FRACTION     = 0, 0.116, 0.116, 0.372, 0.5, 1, 1, 0.8, 0,5, 0.279, 0

TEMPERATURE_LIMITS_WHILE_DISCHARGING = -20,   0,   5,  10, 15, 45, 55
MAX_DISCHARGE_CURRENT_T_FRACTION     =   0, 0.2, 0.3, 0.4,  1,  1,  0

; --------- SOC limitation (affecting CCL/DCL) ---------
; Description: Maximal charge / discharge current will be increased / decreased depending on State of Charge,
;              see CC_SOC_LIMIT1 etc.
; Example: The SoC limit will be monitored to control the currents.
; Charge current control management enable (True/False).
CCCM_SOC_ENABLE = False
; Discharge current control management enable (True/False).
DCCM_SOC_ENABLE = False

; Charge current SoC limits
CC_SOC_LIMIT1 = 98
CC_SOC_LIMIT2 = 95
CC_SOC_LIMIT3 = 91

; Charge current limits
CC_CURRENT_LIMIT1_FRACTION = 0.1
CC_CURRENT_LIMIT2_FRACTION = 0.3
CC_CURRENT_LIMIT3_FRACTION = 0.5

; Discharge current SoC limits
DC_SOC_LIMIT1 = 10
DC_SOC_LIMIT2 = 20
DC_SOC_LIMIT3 = 30

; Discharge current limits
DC_CURRENT_LIMIT1_FRACTION = 0.1
DC_CURRENT_LIMIT2_FRACTION = 0.3
DC_CURRENT_LIMIT3_FRACTION = 0.5

; --------- Time-To-Go ---------
; Description: Calculates the time to go shown in the GUI
;              Recalculation is done based on TIME_TO_SOC_RECALCULATE_EVERY
TIME_TO_GO_ENABLE = True

; --------- Time-To-Soc ---------
; Description: Calculates the time to a specific SoC
; Example: TIME_TO_SOC_POINTS = 50, 25, 15, 0
;          6h 24m remaining until 50% SoC
;          17h 36m remaining until 25% SoC
;          22h 5m remaining until 15% SoC
;          28h 48m remaining until 0% SoC
; Set of SoC percentages to report on dbus and MQTT. The more you specify the more it will impact system performance.
; [Valid values 0-100, comma separated list. More that 20 intervals are not recommended]
; Example: TIME_TO_SOC_POINTS = 100, 95, 90, 85, 75, 50, 25, 20, 10, 0
; Leave empty to disable
TIME_TO_SOC_POINTS = 30, 20, 0
; Specify TimeToSoc value type [Valid values 1, 2, 3]
; 1 Seconds
; 2 Time string <days>d <hours>h <minutes>m <seconds>s
; 3 Both seconds and time string "<seconds> [<days>d <hours>h <minutes>m <seconds>s]"
TIME_TO_SOC_VALUE_TYPE = 2
; Specify in seconds how often the TimeToSoc should be recalculated
; Minimum are 5 seconds to prevent CPU overload
TIME_TO_SOC_RECALCULATE_EVERY = 180
; Include TimeToSoC points when moving away from the SoC point [Valid values True, False]
; These will be as negative time. Disabling this improves performance slightly
TIME_TO_SOC_INC_FROM = False

TEMP_BATTERY = 2

TEMP_2_NAME = T Celdas
BATTERY_CELL_DATA_FORMAT = 1

SOC_LOW_WARNING = 25
SOC_LOW_ALARM   = 20

Relevant log output

No log See attached pictures

Any other information that may be helpful

In the charger Absortion screen capture the voltage is slowly droping to 13.6 but remains in Absortion not Float

mr-manuel commented 8 months ago

This are two different systems. Only once charging algorithm is used. In your case the one of the BMS. You can ignore the state of the MultiPlus/Quattro. For more informations please ask in the Victron Community.