334 lines
11 KiB
ReStructuredText
334 lines
11 KiB
ReStructuredText
Daly BMS Sensor
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===============
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.. seo::
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:description: Instructions for setting up a Daly Smart BMS
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:image: daly_bms.jpg
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The ``daly_bms`` sensor platform allows you to use a Daly Smart BMS
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(`more info <https://dalyelec.en.made-in-china.com/>`__)
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with ESPHome.
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The BMS communicates via :ref:`UART <uart>`.
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.. figure:: images/daly_bms_example.png
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:align: center
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:width: 100.0%
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Component/Hub
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-------------
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.. code-block:: yaml
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# Example configuration entry
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daly_bms:
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update_interval: 20s
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Configuration variables:
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************************
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- **update_interval** (*Optional*, :ref:`config-time`): Delay between data requests.
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- **address** (*Optional*, int): Address to use, defaults to ``0x80``.
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Sensor
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------
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A sensor platform to read BMS data
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.. code-block:: yaml
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sensor:
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- platform: daly_bms
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voltage:
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name: "Battery Voltage"
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current:
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name: "Battery Current"
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battery_level:
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name: "Battery Level"
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max_cell_voltage:
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name: "Max Cell Voltage"
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max_cell_voltage_number:
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name: "Max Cell Voltage Number"
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min_cell_voltage:
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name: "Min Cell Voltage"
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min_cell_voltage_number:
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name: "Min Cell Voltage Number"
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max_temperature:
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name: "Max Temperature"
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max_temperature_probe_number:
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name: "Max Temperature Probe Number"
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min_temperature:
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name: "Min Temperature"
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min_temperature_probe_number:
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name: "Min Temperature Probe Number"
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remaining_capacity:
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name: "Remaining Capacity"
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cells_number:
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name: "Cells Number"
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temperature_1:
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name: "Temperature 1"
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temperature_2:
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name: "Temperature 2"
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cell_1_voltage:
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name: "Cell 1 Voltage"
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cell_2_voltage:
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name: "Cell 2 Voltage"
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cell_3_voltage:
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name: "Cell 3 Voltage"
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cell_4_voltage:
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name: "Cell 4 Voltage"
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Configuration variables:
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************************
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- **voltage** (*Optional*): Voltage of the battery pack connected to Daly BMS.
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All options from :ref:`Sensor <config-sensor>`.
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- **current** (*Optional*): Current flowing trough the BMS (input or output from batttery).
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All options from :ref:`Sensor <config-sensor>`.
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- **battery_level** (*Optional*): Battery level in % (SoC).
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All options from :ref:`Sensor <config-sensor>`.
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- **max_cell_voltage** (*Optional*): The cell of the battery with the higher voltage.
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All options from :ref:`Sensor <config-sensor>`.
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- **max_cell_voltage_number** (*Optional*): The cell number of the battery with the higher voltage.
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All options from :ref:`Sensor <config-sensor>`.
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- **min_cell_voltage** (*Optional*): The cell of the battery with the lower voltage.
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All options from :ref:`Sensor <config-sensor>`.
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- **min_cell_voltage_number** (*Optional*): The cell number of the battery with the lower voltage.
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All options from :ref:`Sensor <config-sensor>`.
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- **max_temperature** (*Optional*): The higher temperature measured from the temperature sensors.
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All options from :ref:`Sensor <config-sensor>`.
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- **max_temperature_probe_number** (*Optional*): The sensor number which has measured the higher temperature.
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All options from :ref:`Sensor <config-sensor>`.
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- **min_temperature** (*Optional*): The lower temperature measured from the temperature sensors.
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All options from :ref:`Sensor <config-sensor>`.
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- **min_temperature_probe_number** (*Optional*): The sensor number which has measured the lower temperature.
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All options from :ref:`Sensor <config-sensor>`.
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- **remaining_capacity** (*Optional*): The capacity in Ah left in the battery.
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All options from :ref:`Sensor <config-sensor>`.
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- **cells_number** (*Optional*): The number of cells in series in the battery pack.
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All options from :ref:`Sensor <config-sensor>`.
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- **temperature_1** (*Optional*): The first temperature sensor.
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All options from :ref:`Sensor <config-sensor>`.
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- **temperature_2** (*Optional*): The second temperature sensor.
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All 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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All options from :ref:`Sensor <config-sensor>`.
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Text Sensor
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-----------
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Text sensor that indicates the status of BMS.
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.. code-block:: yaml
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text_sensor:
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- platform: daly_bms
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status:
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name: "BMS Status"
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Configuration variables:
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************************
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- **status** (*Optional*): The BMS Status (Charging, Discharging, Stationary).
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All options from :ref:`Text Sensor <config-text_sensor>`.
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Binary Sensor
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-------------
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Binary sensor that indicates the status of MOS.
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.. code-block:: yaml
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binary_sensor:
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- platform: daly_bms
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charging_mos_enabled:
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name: "Charging MOS"
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discharging_mos_enabled:
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name: "Discharging MOS"
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Configuration variables:
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************************
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- **charging_mos_enabled** (*Optional*): The BMS charging MOS status to enable the recharge of the battery.
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All options from :ref:`Binary Sensor <config-binary_sensor>`.
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- **discharging_mos_enabled** (*Optional*): The BMS discharging mos status to enable the load.
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All options from :ref:`Binary Sensor <config-binary_sensor>`.
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Control BMS
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-----------
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At this moment Daly sensor platform don't suppport controlling you BMS, but you can make some stuff using uart.write
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First you need to setup binary sensors for charging and disharging MOS
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.. code-block:: yaml
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binary_sensor:
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- platform: daly_bms
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charging_mos_enabled:
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name: "Daly Charging MOS"
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id: bin_daly_chg_mos # binary MOS sensor must have ID to use with switch
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internal: True # but you can make it internal to avoid duplication
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discharging_mos_enabled:
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name: "Daly Discharging MOS"
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id: bin_daly_dischg_mos # binary MOS sensor must have ID to use with switch
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internal: True # but you can make it internal to avoid duplication
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Then you can add switches
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.. code-block:: yaml
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switch:
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- platform: template
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name: "Daly Charging MOS"
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lambda: |-
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if (id(bin_daly_chg_mos).state) {
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return true;
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} else {
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return false;
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}
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turn_on_action:
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- uart.write:
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data: [0xA5, 0x40, 0xDA, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC8]
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- logger.log:
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format: "Send cmd to Daly: Set charge MOS on"
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turn_off_action:
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- uart.write:
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data: [0xA5, 0x40, 0xDA, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC7]
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- logger.log:
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format: "Send cmd to Daly: Set charge MOS off"
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- platform: template
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name: "Daly Discharging MOS"
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lambda: |-
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if (id(bin_daly_dischg_mos).state) {
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return true;
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} else {
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return false;
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}
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turn_on_action:
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- uart.write:
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data: [0xA5, 0x40, 0xD9, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC7]
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- logger.log:
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format: "Send cmd to Daly: Set discharge MOS on"
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turn_off_action:
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- uart.write:
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data: [0xA5, 0x40, 0xD9, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC6]
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- logger.log:
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format: "Send cmd to Daly: Set discharge MOS off"
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Also you can add select to change battery level
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.. code-block:: yaml
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select:
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- platform: template
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name: "Daly Battery Level setup"
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optimistic: True
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options:
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- 100%
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- 75%
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- 50%
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- 25%
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- 0%
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initial_option: 100%
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set_action:
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then:
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- if:
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condition:
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lambda: 'return x == "100%";'
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then:
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- uart.write:
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data: [0xA5, 0x40, 0x21, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0xE8, 0xF9]
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- logger.log:
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format: "Send cmd to Daly: Set SOC to 100%"
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else:
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- if:
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condition:
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lambda: 'return x == "75%";'
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then:
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- uart.write:
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data: [0xA5, 0x40, 0x21, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xEE, 0xFE]
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- logger.log:
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format: "Send cmd to Daly: Set SOC to 75%"
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else:
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- if:
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condition:
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lambda: 'return x == "50%";'
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then:
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- uart.write:
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data: [0xA5, 0x40, 0x21, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xF4, 0x03]
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- logger.log:
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format: "Send cmd to Daly: Set SOC to 50%"
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else:
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- if:
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condition:
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lambda: 'return x == "25%";'
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then:
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- uart.write:
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data: [0xA5, 0x40, 0x21, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFA, 0x08]
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- logger.log:
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format: "Send cmd to Daly: Set SOC to 25%"
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else:
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- if:
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condition:
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lambda: 'return x == "0%";'
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then:
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- uart.write:
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data: [0xA5, 0x40, 0x21, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0E]
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- logger.log:
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format: "Send cmd to Daly: Set SOC to 0%"
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UART Connection
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---------------
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Connect RX from BMS to TX in ESP board and TX from BMS to RX in ESP board
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.. figure:: images/daly_bms_pinout.png
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:align: center
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:width: 100.0%
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Uart Pinout.
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**3.3v Warning:** some BMS 3.3v cant source large currents and may not work to properly power the ESP. If you are having WIFI connection issues or similar, try a different power source. There is 12-15v available on the Daly connector which via a proper step-down converter can properly power the ESP.
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On the ESP32 (untested on ESP8266) if you are having missing data (such as Temperature 1/2), it may be due to UART buffer size.
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Add the following to your configuration to increase the buffer from the default 256 to 512.
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.. code-block::
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uart:
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...
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rx_buffer_size: 512
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See Also
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--------
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- :ref:`sensor-filters`
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- :apiref:`daly_bms/daly_bms.h`
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- :ghedit:`Edit`
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