Max charge rate temperature curve

What's Changed

Features

• Max charge rate temperature curve adjustments by @springfall2008 in #1869

This feature allows you to model temperature dependant charging and discharging of the battery. You can set a charge and a discharge maximum rate scaling based on temperature and then using a temperature sensor predict future battery temperatures. Low power mode will also account for this in its calculation.

To try this feature with GivTCP (Givenergy) can you update your apps.yaml to both give battery temperature and also define charge curve. I don't know what the correct charge or discharge curves are for particular makes and models but this charge curve came from some comments made by GivEnergy.

  battery_temperature:
   - sensor.givtcp_battery_stack_1_bms_temperature
   - sensor.givtcp2_battery_stack_1_bms_temperature

  # Battery temperature charge adjustment curve
  # Specific in C which is a multiple of the battery capacity
  # e.g. 0.33 C is 33% of the battery capacity
  # values unspecified will be assumed to be 1.0 hence rate is capped by max charge rate
  battery_temperature_history: sensor.givtcp_battery_stack_1_bms_temperature
  battery_temperature_charge_curve:
    19: 0.33
    18: 0.33
    17: 0.33
    16: 0.33
    15: 0.33
    14: 0.33
    13: 0.33
    12: 0.33
    11: 0.33
    10: 0.25
    9: 0.25
    8: 0.25
    7: 0.25
    6: 0.25
    5: 0.25
    4: 0.25
    3: 0.25
    2: 0.25
    1: 0.15
    0: 0.00

Bug fixes

• Fix issue with key filtering in debug files by @springfall2008 in #1871

Full Changelog: v8.10.2...v8.11.0

Bug fixes, repeat service name, Service API for car hold

What's Changed

• Service repeat was called always, mistake to documentation by @springfall2008 in #1867

The documented name repeat did not match the code.

• Fix bug where service API was not used for car/iboost hold by @springfall2008 in #1868

The service API was not called when holding for car or iboost, this is now fixed.

Full Changelog: v8.10.1...v8.10.2

Fix optimiser bug, added service repeat option

What's Changed

Bug fixes

• Fix bug where sometimes plan jumped to high charging by @springfall2008 in #1861

Sometimes the plan goes a bit crazy charging when you have 'calculate_second_pass' enabled - now fixed.

• Inverter test cases updated, minor fix for discharge start/end time, doc update by @springfall2008 in #1851

Minor fixes to start/end time discovered from existing inverter settings, will only impact 'base' plan.

• Adding service repeat option by @springfall2008 in #1855

You can now set 'repeat:True' on a service call if you want that service to be repeated every run e.g. charge_start_service. Useful if your inverter stops after a while.

Full Changelog: v8.10.0...v8.10.1

Optimiser improvements, bug fixes

What's Changed

Features

Optimiser changes by @springfall2008 in #1838

• Restored the selection of charge SOC % on 30 minute charge slots
• Added new more aggressive logic to combine charge slots after optimisation, thus enabling low power mode without 'combine_charge' enabled.
• Adjusted weighting around freeze/charge/no-charge slightly

Octopus ready time sensor change by @springfall2008 in #1839

Supported the new select. octopus ready sensor

Bug fixes

Don't enable low power in monitor mode by @springfall2008 in #1841

Previous in monitor mode Predbat was predicting low power charging, which wasn't possible.

Bug in prediction not resetting charge rate by @springfall2008 in #1845

There was a bug where if the charge rate was set to 0 the plan produced was totally messed up.

Unit testing

Extra unit tests by @springfall2008 in #1842

Test updates by @springfall2008 in #1847

Full Changelog: v8.9.3...v8.10.0

Fix charge freeze service being called for charges

What's Changed

• Fix charge freeze service call when it shouldn't be by @springfall2008 in #1834

Full Changelog: v8.9.2...v8.9.3

Fix crash with cost_car_per_kwh

What's Changed

• Fix crash with cost_car_per_kwh by @springfall2008 in #1833

Full Changelog: v8.9.1...v8.9.2

Bug fix min/max selection in optimiser

What's Changed

• Bug fix min/max selection in optimiser by @springfall2008 in #1831

In some cases the maximum SOC was not at the end of a charge slot, changed the search to include all periods in-between.

Full Changelog: v8.9.0...v8.9.1

Show XLoad per load source, Predheat hysteresis off, service API

What's Changed

Improvements

• Re-work execute code to account for calling service last by @springfall2008 in #1826

The service API is called after all register changes to help with some inverters that use them.

• Adding Predheat hysteresis_off by @springfall2008 in #1827

Added a hysteresis off setting for Predheat.

• Split out load data in plan debug, add predheat off hysteresis by @springfall2008 in #1830

In plan_debug mode you can now see each load source.

Bug fixes

• Clip off slots regardless of min_soc setting by @springfall2008 in #1828

Setting min_soc left around useless charge slots, now they are clipped.

• Gate changes to settings in monitor mode by @springfall2008 in #1829

Monitor mode would reset reserve/charge/discharge rates - this is now fixed.

Full Changelog: v8.8.20...v8.9.0

Multi-inverter fixes, car charging, plan optimiser fix

What's Changed

Bug fixes

• When the car is fully charged it shouldn't freeze the battery by @springfall2008 in #1819

Take into account when the car battery is full and no longer freeze the battery.

• Multi-inverter tweaks by @springfall2008 in #1820
• Further multi-inverter tweaks by @springfall2008 in #1822

Fix bugs in multi-inverter handling around charge hold

• Fix bug where sometimes full charge is not selected to maximise export by @springfall2008 in #1825

Sometimes a full charge was not selected even if it was profitable due to additional export.

Full Changelog: v8.8.19...v8.8.20

Fixes for GE REST mode and GivTCP V3, Multi-inverter fixes

What's Changed

Bug fixes

• Multi-inverter fixes by @springfall2008 in #1815

Fix some additional cases handling imbalanced SOC levels on multi-inverter systems

• Inverter REST tests and fixes by @springfall2008 in #1818

Fix bug where battery size was not extracted from GivTCP V3 in REST mode

Full Changelog: v8.8.18...v8.8.19