Supporting material

Added new chapters:

2.1.3 Centralized Cell Monitoring

2.1.4 Temperature measurement

2.3.2 Integrated SOC/SOH estimator (gen1 algorithm)

2.3.2.1 SOH algorithm

2.7 Warnings

4.1 EMUS BMS Control Panel

4.9 Charging process

4.14 SOC Estimation

4.14.1 SOC legacy adjustment algorithm

4.14.2 SOC/SOH estimator (gen1 algorithm)

4.14.2.1 Tuning parameters

4.14.2.2 Cell model reference settings

4.14.2.3 SOC-OCV dependency curve of cell

4.14.2.4 SOC dependency on temperature

Other:

All products technical information has been transferred to separate datasheet documents

Known issues:

When tabs that were dragged out of the main window are closed, the whole Control Panel can also close

Pulses per Distance Unit field is unused for now as Speed Sensor input is not functioning yet

GPI, GPO selection list not fully correct

User interface does not allow to enter high accuracy PSU divider value

Min User SoC range can be set higher than Max. Then user SoC is shown as 0% or 100%

Feature:

Added support for CAN filter device

Fixes:

#7819 Added a status item for the improved "Distance left" value estimation algorithm

#7892 Fixed Battery Pack ID button display

Known issues:

#8094 When wire break is found the individual cell voltage shown in cells tab is not accurate

Known issues:

Non-Clearable statistics not saved

BMS might reset during charging stages, reset period could be 1-2hrs

Wireless connectivity module only transmits data to a connected device, receiving will be added in a later firmware update

Main clock can drift and fall behind up to couple of minutes per day

Speed Sensor input is not functioning yet

No SoC PWM output functionality yet

Cell Wire Break protection deactivation delay is not as set

BMS reset needed after cell count configuration to clear wire break protection/indication

CAN Broadcast Period not accurate

Each Call Value not broadcasted

Charging restarts on max cell voltage drops below restart value

Out of boundary current is indicated as measured, not as incorrect reading

Wire break indicated correctly not in all cases

Version 2.8.4

Known issues:

Wireless connectivity module only transmits data to a connected device, receiving will be added in a later firmware update

Main clock can drift and fall behind up to couple of minutes per day

Speed Sensor input is not functioning yet

No SoC PWM output functionality yet

Cell Wire Break protection deactivation delay is not as set

BMS reset needed after cell count configuration to clear wire break protection/indication

Features:

This is the first release for CCGM023

Fixes:

This is the first release for CCGM023

Known Issues:

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Fixes:

#8148 SOC algorithm fix

Known Issues:

#8094 When wire break is found some voltage calculations might not be fully correct

#8095 Wire break detection for LTO cells with higher voltages (~3.4V) is not accurate

#7485 In some situations entering L2 access (when L2 password is not set) can be complicated

Fixes:

#8114 Fix to charging current request on some chargers/inverters

Known Issues:

#8094 When wire break is found some voltage calculations might not be fully correct

#8095 Wire break detection for LTO cells with higher voltages (~3.4V) is not accurate

#7485 In some situations entering L2 access (when L2 password is not set) can be complicated

Feature:

#7169 Enpower Charger support

#7639 ADY Charger support(*)

#7810 PYLON Charger support(*)

#7889 Sermatec Inverter support(*)

#7590 Stercom Charger support(*)

#8081 AtibHTUD Charger support(*)

#7892 Added new set Battery ID feature

#7831 Additional CAN requested messages for Firmware version and serial number

#7736 Cell Wire Break Detection functionality

#6378 LTO cell support

#7662 DC/DC control - power saving functionality

#7642 Victron Charger enhancement

Cell Module version now can be seen in Control Panel in Cells Tab

Fixes:

#7916 DeltaQ bmsReady flag fix, requested current set to 0 after charge finished until charge restart

#7782 J1939 Charger Missing CAN IDs fix, manual charger CAN ID fix. Note: Elcon name changed to J1939

#7637 Cell Polling Period change while running

#7827 CAN protocol Option B message response fix

#7341 Not able to balance cells at more than 50C fix

#7476 Charge/Discharge over-current warning deactivation delay fix

Fix to SOC calculation for multiple parallel strings

Zivan charger set voltage fix

DeltaQ charger communication fix

Known Issues:

#8094 When wire break is found some voltage calculations might not be fully correct

#8095 Wire break detection for LTO cells with higher voltages (~3.4V) is not accurate

#7485 In some situations entering L2 access (when L2 password is not set) can be complicated

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.

Fixes

Value of 'Total Voltage' in Layout #4 was displayed incorrectly above 655 volts