Bonjour,
Mon problème
Nouveau protocole Daly BMS !
Intégration EspHome désormais non fonctionnelle.
Depuis plusieurs mois j’ai une batterie domestique qui fonctionne (8kWh, BMS 8s 100A)) dont je remonte les informations sur HA via l’intégration DalyBMS sur ESPhome, à travers un ESP32 et une liaison UART.
Je me décide en septembre, de me fabriquer une batterie portable type ‹ EcoFlow ›, sur les mêmes briques, mais en me limitant à 1300Wh.
J’achète un nouveau BMS Daly (4s 100A) avec les caractéristiques adéquates, et … plus rien ne fonctionne.
Après beaucoup de temps de recherche et d’essai, je trouve que Daly a changé son protocole de la liaison UART.
Le décodage de l’intégration DalyBMS d’ESPHome ne fonctionne plus.
Il semble que c’est depuis mi-juillet 2024 et les BMS livré avec le dongle Wifi+BT (anciennement uniquement BT).
Je vous mets mon code ci-dessous, qui fonctionne pour mon cas, avec les champs modifiables en lecture/écriture, en type Select, Number.
Les champs en lecture dans les Sensors.
J’espère que ça pourra vous aider et éviter de perdre du temps.
Pour le reste de la configuration, même schéma de branchement qu’avant, RX, TX et GND aux mêmes endroits sur le port UART.
J’ai eu aussi pas mal de problème car mon BMS ne s’activait pas quand j’allumais mon onduleur, en ayant accès à id(dischargingMOSSwitch) ça permet d’activer le tout.
Personnellement j’ai couplé l’action à un bouton :
binary_sensor:
- platform: gpio
pin:
number: 7
inverted: true
mode:
input: true
pullup: true
id: bouton_activation
name: "Bouton Activation"
publish_initial_state: True
filters:
- delayed_on_off: 5ms
on_press:
- select.set:
id: dischargingMOSSwitch
option: "ON"
on_release:
- select.set:
id: dischargingMOSSwitch
option: "OFF"
Ma configuration
uart:
- id: uart_1
baud_rate: 9600
tx_pin: GPIO43
rx_pin: GPIO44
debug:
direction: BOTH
dummy_receiver: true
after:
timeout: 100ms
sequence:
- lambda: UARTDebug::log_hex(direction, bytes, ' ');
modbus:
- id: modbus_client
uart_id: uart_1
modbus_controller:
- id: modbus_device
address: 0xd2
modbus_id: modbus_client
update_interval: 10s
sensor:
- platform: modbus_controller
modbus_controller_id: modbus_device
name: cell1
id: cell1
register_type: holding
address: 0x00
unit_of_measurement: "V"
value_type: U_WORD
accuracy_decimals: 3
lambda: return .001 * (float)x;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: cell2
id: cell2
register_type: holding
address: 0x01
unit_of_measurement: "V"
value_type: U_WORD
accuracy_decimals: 3
lambda: return .001 * (float)x;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: cell3
id: cell3
register_type: holding
address: 0x02
unit_of_measurement: "V"
value_type: U_WORD
accuracy_decimals: 3
lambda: return .001 * (float)x;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: cell4
id: cell4
register_type: holding
address: 0x03
unit_of_measurement: "V"
value_type: U_WORD
accuracy_decimals: 3
lambda: return .001 * (float)x;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: voltage difference
id: voltageDiff
register_type: holding
address: 0x38
unit_of_measurement: "V"
value_type: U_WORD
accuracy_decimals: 3
lambda: return .001 * (float)x;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: temperature1
id: temperature
register_type: holding
address: 0x20
unit_of_measurement: "C"
value_type: U_WORD
accuracy_decimals: 0
lambda: return x-40;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: SOC
id: niveau
register_type: holding
address: 0x2A
unit_of_measurement: "%"
value_type: U_WORD
accuracy_decimals: 1
lambda: return .1 * (float)x;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: Capacite restante
id: capacity
register_type: holding
address: 0x30
unit_of_measurement: "Ah"
value_type: U_WORD
accuracy_decimals: 1
lambda: return .1 * (float)x;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: voltage
id: tension
register_type: holding
address: 0x28
unit_of_measurement: "V"
value_type: U_WORD
accuracy_decimals: 1
lambda: return .1 * (float)x;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: current
id: courant
register_type: holding
address: 0x29
unit_of_measurement: "A"
value_type: U_WORD
accuracy_decimals: 1
lambda: return .1 * (float)(x-30000);
- platform: modbus_controller
modbus_controller_id: modbus_device
name: status BMS
id: statusBMS
register_type: holding
address: 0x2F
unit_of_measurement: ""
value_type: U_WORD
accuracy_decimals: 0
lambda: return (float)x;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: power
id: puissance
register_type: holding
address: 0x39
unit_of_measurement: "W"
value_type: U_WORD
accuracy_decimals: 1
lambda: return (float)x;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: faultBitmap1
id: erreur
register_type: holding
address: 0x3a
unit_of_measurement: ""
value_type: U_WORD
- platform: modbus_controller
modbus_controller_id: modbus_device
name: Cycles batterie realise
register_type: holding
address: 0x33
skip_updates: 10
unit_of_measurement: ""
value_type: U_WORD
- platform: template
name: fin_charge
id: fin_charge
update_interval: 1s
lambda: return 60.0*((id(ratedCapacity).state - id(capacity).state) / id(courant).state);
- platform: template
name: fin_decharge
id: fin_decharge
update_interval: 1s
lambda: return -60.0*(id(capacity).state / id(courant).state);
text_sensor:
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0x35
name: charge MOS status
id: chargeMOSStatus
lambda: |-
uint16_t value = modbus_controller::word_from_hex_str(x, 0);
switch (value) {
case 0: return std::string("Off");
case 1: return std::string("On");
default: return std::string("Unknown");
}
return x;
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0x36
name: discharge MOS status
id: dischargeMOSStatus
lambda: |-
uint16_t value = modbus_controller::word_from_hex_str(x, 0);
switch (value) {
case 0: return std::string("Off");
case 1: return std::string("On");
default: return std::string("Unknown");
}
return x;
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0x2F
name: MOS status
lambda: |-
uint16_t value = modbus_controller::word_from_hex_str(x, 0);
switch (value) {
case 0: return std::string("Stationary");
case 1: return std::string("Charging");
case 2: return std::string("Discharging");
default: return std::string("Unknown");
}
return x;
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0xA9
name: Version logiciel BMS
skip_updates: 10
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0xB1
name: Version materiel BMS
skip_updates: 10
- platform: modbus_controller
modbus_controller_id: modbus_device
register_type: holding
address: 0xCC
name: Date de production BMS
skip_updates: 10
raw_encode: HEXBYTES
number:
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Battery SOC Number"
address: 0xA7
value_type: U_WORD
unit_of_measurement: "%"
min_value: 0
max_value: 100
step: 1
lambda: return x * .1;
write_lambda: return x * 10;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Rated capacity"
id: ratedCapacity
address: 0x80
value_type: U_WORD
unit_of_measurement: "Ah"
min_value: 0
max_value: 150
step: 1
lambda: return x * .1;
write_lambda: return x * 10;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Tension reference cellule"
address: 0x81
value_type: U_WORD
unit_of_measurement: "mV"
min_value: 1000
max_value: 5000
step: 100
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Tension debut equilibrage"
address: 0xA3
value_type: U_WORD
unit_of_measurement: "mV"
min_value: 1000
max_value: 5000
step: 100
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Difference tension debut equilibrage"
address: 0xA4
value_type: U_WORD
unit_of_measurement: "mV"
min_value: 0
max_value: 200
step: 10
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Temperature de protection"
address: 0xA8
value_type: U_WORD
unit_of_measurement: "°C"
min_value: 0
max_value: 60
step: 1
lambda: return x - 40;
write_lambda: return x + 40;
- platform: modbus_controller
modbus_controller_id: modbus_device
name: "Sleep wait time"
id: sleepWaitTime
address: 0x8A
value_type: U_WORD
unit_of_measurement: "s"
min_value: 0
max_value: 10000
step: 100
select:
- platform: modbus_controller
name: "charging MOS switch"
id: chargingMOSSwitch
address: 0xA5
optionsmap:
"OFF": 0
"ON": 1
- platform: modbus_controller
name: "discharging MOS switch"
id: dischargingMOSSwitch
address: 0xA6
optionsmap:
"OFF": 0
"ON": 1
- platform: modbus_controller
modbus_controller_id: modbus_device
id: batteryType
skip_updates: 10
address: 0x89
name: Battery type
optionsmap:
"LiFePO4": 0
"ternary": 1
"Lithium titanate": 2
En espérant vous aider d’une manière ou d’une autre.
Bonne soirée 