Supporting material

Fixes:

Cell communication issue

SOC calculation issue

Multiple peripheral issue

Charge/Discharge/Over-Current Delay

Features

Added fixed Powerfinn charger firmware

        Added SMA Sunny Island firmware

• First firmware release for CU021A

• From now on Climate Control is not executed if min cell voltage is below Cell Under-Voltage protection “Activate at” threshold;
• Speed signal measurement is now more accurate and in sync with current measurement. In result, momentary consumption and all three types of estimated distance left are more accurate too;
• “Periodic Data Broadcast” function of the CAN bus parameters no longer needs to be enabled for the “Broadcast Each Cell Value” function to work;
• TM4 Neuro CAN message sending is now included into build for all firmware types and is enabled by a newly added separate function;
• “Charger Connected” protection that opens the main contactor automatically is charger is connected has been added;
• Fixed bug where parameter could be changed during charging;
• Pin mapping parameter can no longer be changed during charging, except when inverting the input pin mapped with “PF3 AC Sense Input” pin function, but only if “Non-CAN Charger” or “Analog Signal Controlled Charger” firmware is used;
• Fixed bug where Control Unit would send login status over serial and CAN interfaces every 10 minutes;
• Fixed another bug in the pre-charge procedure for Zivan RE chargers;
• Fixed bug where “Protection event” charging error would sometimes be registered instead of “Overvoltage” charging error;
• “Trips count” statistics now counts the number of times the charger has been connected when driven distance is more than zero;
• Removed the unused Charger Type parameter;
• “Pulses per distance unit” parameter now has a new ID and is 4 bytes instead of 2;
• Implemented setting SOC over CAN;
• Adjusted CAN bit timing setting for 1Mbps and 800kbps speeds in order to support longer bus lengths;
• Fixed bug where cell detail requests would be stalled if a request for external temperatures is active, but no external temperature sensors are used. From now on cell detail requests for external temperatures timeout immediately if the corresponding battery flag is invalid;
• Removed Balancing Range parameter and replaced it with Allowed Disbalance parameter;
• Implemented second password which gives three access levels instead of two: * Level 2 access allows to change individual configuration parameters and perform all maintenance operations; * Level 1 access allows most maintenance operations, such as firmware updates, loading configuration from a file, resetting configuration to defaults, clearing the events log and statistics, resetting current measurement to 0, resetting the Control Unit, setting the SOC value, and calibrating the internal and external temperatures sensors of the cell modules, but does not allow changing individual configuration parameters; * Level 0 allows only activity monitoring but no maintenance operations or changes to the configuration; Logging in/out, as well as setting/clearing the password is done using the same serial protocol sentences or CAN messages as before (see Emus BMS Serial Protocol and Emus BMS CAN Protocol documents);
• Parallel connected charger handing is now unified for all supported CAN charger types: Set Current is now divided by the “Number of Chargers” parameter before sending to each connected charger, meaning that “Slow Charging Current” and “Fast Charging Current” parameters define total current of all parallel connected CAN chargers, and if the actual number of connected chargers is less than the value of “Number of Chargers” parameter, Set Current will be respectively lower than the corresponding charging current parameter. This also means that Elcon related CS2, CS3, and CS4 sentences have been removed from Emus BMS Serial Protocol, and the number of connected Eltek Valere EV chargers does not have to be equal to “Number of Chargers” parameter for the charger connection to be acknowledged. Furthermore, Actual Current status is now accumulated from all connected chargers for all CAN charger types, number of connected chargers is now reported in the first field of CS1 sentence instead of charger connection status, and maximum number of parallel connected chargers is now 16 for all support CAN charger types;
• General purpose output pin mapped with PF10 Charger Enable Output function is no longer enabled in Pre-heat stage.

• Implemented Pack Under-Voltage protection, added corresponding statistic and events.

• Fixed bug where individual cell data was not correctly sent upon request if the number of cells is 256 or more;
• Fixed bug where individual cell temperature values would not be transmitted over CAN until Cells tab is observed in the Control Panel when "Broadcast Each Cell Value" feature is turned on;
• Fixed bug where maximum balancing current would be reduced to 2-3% instead 0% when Cell Module temperature became higher than "High Cell Module Temperature" reduction "Activate at" threshold;
• Fixed bug where SOC would be constantly set to 0% if "Periodic Data Broadcast" function was enabled;
• Fixed bug where charging process would fail to start after disconnecting one or few of several parallel chargers when using Elcon or Eltek Valere EV firmware;
• Fixed bug where PowerFinn PAP3200 chargers were sometimes not detected correctly;
• Fixed bug that would sometimes cause "BMS Uptime" and "Charging Stage Duration" to become random numbers of very high magnitude;
• Fixed bug where the timestamp of Pack Undervoltage protection statistics was sometimes incorrect;
• Fixed bug where error status reported by Elcon charger was not displayed correctly;
• Fixed bug where charger connection acknowledgment did not work correctly when using Eltek Valere EV firmware;
• Fixed bug where charging process sub-stage status was not cleared after disconnecting the charger when using Non-CAN firmware, causing the subsequent charging process to begin with an unusual charging stage (e.g. Balancing stage instead Main Charging stage");
• Fixed bug where charger control signal was not correctly generated when using "Analog_signal_controlled_charger" firmware.

• Fixed bug where master clear wasn't clearing passwords;

• Updated balancing algorithm for NON CAN chargers version. Now balancing stage should be shorter and BMS registers charging finished state correctly. Issues #4793, #4841.
• Fixed bug, where external temperature was not shown. Issue #4814.
• Fixed bug, where BMS restarts randomly. Issue #4719.
• Fixed bug, where DelatQ is not recognised after reconnecting it to power supply.
• Updated balancing algorithm with CAN chargers. Now balancing stage current calculated more accurate according to cell module balancing current and cell module temperatures. Issue #4481.
• Fixed bug, where fan was not working correctly with external temperature sensors. Issue #4672.
• Fixed bug, where Console wasn't sending SCIB parallel strings output as separate strings.
• Fixed bug, where total voltage was not correctly shown with SCIB configuration.
• Fixed bug, where SCIB modules was confused with CAN group module IDs.
• Fixed bug, where external temperature min, max, avg values was not shown correctly, when external temperature sensors were not used on all cell modules. Issues #4522, #4523.
• Implemented DeltaQ charger support.