esphome-docs/components/sensor/daly_bms.rst

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Daly BMS Sensor
===============
.. seo::
:description: Instructions for setting up a Daly Smart BMS
:image: daly_bms.jpg
The ``daly_bms`` sensor platform allows you to use a Daly Smart BMS
(`more info <https://dalyelec.en.made-in-china.com/>`__)
with ESPHome.
The BMS communicates via :ref:`UART <uart>`.
.. figure:: images/daly_bms_example.png
:align: center
:width: 100.0%
.. code-block:: yaml
# Example configuration entry (ESP8266)
uart:
tx_pin: GPIO1
rx_pin: GPIO3
baud_rate: 9600
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daly_bms:
update_interval: 20s
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sensor:
- platform: daly_bms
voltage:
name: "Battery Voltage"
current:
name: "Battery Current"
battery_level:
name: "Battery Level"
max_cell_voltage:
name: "Max Cell Voltage"
max_cell_voltage_number:
name: "Max Cell Voltage Number"
min_cell_voltage:
name: "Min Cell Voltage"
min_cell_voltage_number:
name: "Min Cell Voltage Number"
max_temperature:
name: "Max Temperature"
max_temperature_probe_number:
name: "Max Temperature Probe Number"
min_temperature:
name: "Min Temperature"
min_temperature_probe_number:
name: "Min Temperature Probe Number"
remaining_capacity:
name: "Remaining Capacity"
cells_number:
name: "Cells Number"
temperature_1:
name: "Temperature 1"
temperature_2:
name: "Temperature 2"
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cell_1_voltage:
name: "Cell 1 Voltage"
cell_2_voltage:
name: "Cell 2 Voltage"
cell_3_voltage:
name: "Cell 3 Voltage"
cell_4_voltage:
name: "Cell 4 Voltage"
text_sensor:
- platform: daly_bms
status:
name: "BMS Status"
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binary_sensor:
- platform: daly_bms
charging_mos_enabled:
name: "Charging MOS"
discharging_mos_enabled:
name: "Discharging MOS"
Component/Hub
-------------
Configuration variables:
************************
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- **update_interval** (*Optional*, :ref:`config-time`): Delay between data requests.
- **address** (*Optional*, int): Address to use, defaults to ``0x80``.
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Sensor
------
A sensor platform to read BMS data
Configuration variables:
************************
- **voltage** (*Optional*): Voltage of the battery pack connected to Daly BMS.
- **name** (**Required**, string): The name for the voltage sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **current** (*Optional*): Current flowing trough the BMS (input or output from batttery).
- **name** (**Required**, string): The name for the current sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **battery_level** (*Optional*): Battery level in % (SoC).
- **name** (**Required**, string): The name for the SoC sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **max_cell_voltage** (*Optional*): The cell of the battery with the higher voltage.
- **name** (**Required**, string): The name for the Max Cell Voltage sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **max_cell_voltage_number** (*Optional*): The cell number of the battery with the higher voltage.
- **name** (**Required**, string): The name for the Max Cell Voltage Number sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **min_cell_voltage** (*Optional*): The cell of the battery with the lower voltage.
- **name** (**Required**, string): The name for the Min Cell Voltage sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **min_cell_voltage_number** (*Optional*): The cell number of the battery with the lower voltage.
- **name** (**Required**, string): The name for the Min Cell Voltage Number sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **max_temperature** (*Optional*): The higher temperature measured from the temperature sensors.
- **name** (**Required**, string): The name for the Max Temperature sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **max_temperature_probe_number** (*Optional*): The sensor number which has measured the higher temperature.
- **name** (**Required**, string): The name for the Max Temperature Probe Number sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **min_temperature** (*Optional*): The lower temperature measured from the temperature sensors.
- **name** (**Required**, string): The name for the Min Temperature sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **min_temperature_probe_number** (*Optional*): The sensor number which has measured the lower temperature.
- **name** (**Required**, string): The name for the Min Temperature Probe Number sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **remaining_capacity** (*Optional*): The capacity in Ah left in the battery.
- **name** (**Required**, string): The name for the Remaining Capacity sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **cells_number** (*Optional*): The number of cells in series in the battery pack.
- **name** (**Required**, string): The name for the Cells Number sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **temperature_1** (*Optional*): The first temperature sensor.
- **name** (**Required**, string): The name for the first temperature sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
- **temperature_2** (*Optional*): The second temperature sensor.
- **name** (**Required**, string): The name for the second temperature sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
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- **cell_1_voltage** (*Optional*): The voltage of cell number 1. Cell number can be from 1 to 16.
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- **name** (**Required**, string): The name for the cell voltage sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Sensor <config-sensor>`.
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Text Sensor
-----------
Text sensor that indicates the status of BMS.
Configuration variables:
************************
- **status** (*Optional*): The BMS Status (Charging, Discharging, Stationary).
- **name** (**Required**, string): The name for the BMS status text sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Text Sensor <config-text_sensor>`.
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Binary Sensor
-------------
Binary sensor that indicates the status of MOS.
Configuration variables:
************************
- **charging_mos_enabled** (*Optional*): The BMS charging MOS status to enable the recharge of the battery.
- **name** (**Required**, string): The name for the charging MOS binary sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Binary Sensor <config-binary_sensor>`.
- **discharging_mos_enabled** (*Optional*): The BMS discharging mos status to enable the load.
- **name** (**Required**, string): The name for the discharging MOS binary sensor.
- **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
- All other options from :ref:`Binary Sensor <config-binary_sensor>`.
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UART Connection
---------------
Connect RX from BMS to TX in ESP board and TX from BMS to RX in ESP board
.. figure:: images/daly_bms_pinout.png
:align: center
:width: 100.0%
Uart Pinout.
See Also
--------
- :ref:`sensor-filters`
- :apiref:`daly_bms/daly_bms.h`
- :ghedit:`Edit`