The average current since the last
measurement (period T\_meas (defaults))
| 0 | RO | 4 | | **s-out** | - | bool | This is true if the output power is enabled | 0 | RO | 5 | | **p-avg** | W | float |Average power consumption over the last
10 seconds
| 0 | RO | 6 | | **e-used** | Wh | float | Power consumption since device boot | 0 | RO | 7 | | **a-rem** | Ah | float | Remaining capacity in the battery | 2.6 | RW | 8 | | **a-full** | Ah | float |Predicted battery capacity when it is fully
charged. falls with aging
| 4.6 | RW | 9 | | **t-full** | h | float |Charging is expected to complete in this
time; zero if not charging
| 0 | RO | 10 | | **s-flags** | - | uint8\_t |This contains the status flags as
described in BMS\_status\_flags\_t
| 255 | RO | 11 | | **s-health** | % | uint8\_t |Health of the battery in percentage, use
STATE\_OF\_HEALTH\_UNKNOWN = 127
if cannot be estimated
| 127 | RO | 12 | | **s-charge** | % | uint8\_t |Percentage of the full charge 0, 100.
This field is required.
| 55 | RO | 13 | | **batt-id** | - | uint8\_t |Identifies the battery within this vehicle,
0 - primary battery.
| 0 | RW | 14 | | **model-id** | - | int32\_t | Model id, set to 0 if not applicable | 0 | RW | 15 | | **model-name** | - | Char\[32] |Battery model name, model name is a
human-readable string that normally
should include the vendor name, model
name and chemistry
|"BMS
test"
| RW | 16 | | **v-cell1** | V | float | The voltage of cell 1 | 0 | RO | 17 | | **v-cell2** | V | float | The voltage of cell 2 | 0 | RO | 18 | | **v-cell3** | V | float | The voltage of cell 3 | 0 | RO | 19 | | **v-cell4** | V | float | The voltage of cell 4 | 0 | RO | 20 | | **v-cell5** | V | float | The voltage of cell 5 | 0 | RO | 21 | | **v-cell6** | V | float | The voltage of cell 6 | 0 | RO | 22 | | **c-afe** | C | float | The temperature of the analog front end | 0 | RO | 23 | | **c-fet** | C | float | The temperature of the transistor | 0 | RO | 24 | | **c-r** | C | float | The temperature of the sense resistor | 0 | RO | 25 | | **n-charges** | - | uint16\_t | The number of charges done | 0 | RW | 26 | | **n-charges-full** | - | uint16\_t | The number of complete charges | 0 | RW | 27 | \ BMS configuration parameters list --------------------------------- | **Parameter** | **Unit** | **Datatype** | **Description** | **Default** | **RO/RW** | **No** | | ------------------------------ | ----------- | ------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------- | --------- | ------ | | **n-cells** | - | uint8\_t | Number of cells used in the BMS board | 3 | RW | 28 | | **t-meas** | ms | uint16\_t | Cycle of the battery to perform a complete battery measurement and SOC estimation can only be 10000 or a whole division of 10000 (For example: 5000, 1000, 500). | 1000 | RW | 29 | | ~~**t-ftti**~~ | ~~ms~~ | ~~uint16\_t~~ | ~~Cycle of the battery to perform diagnostics (Fault Tolerant Time Interval)~~ | ~~1000~~ | ~~RW~~ | ~~30~~ | | **t-cyclic** | s | uint8\_t | Wake up cyclic timing of the AFE (after front end) during sleep mode | 1 | RW | 31 | | **i-sleep-oc** | mA | uint8\_t | Overcurrent threshold detection in sleep mode that will wake up the BMS and also the threshold to detect the battery is not in use | 30 | RW | 32 | | **v-cell-ov** | V | float | Battery maximum allowed voltage for one cell. Exceeding this voltage, the BMS will go to fault mode. | 4.2 | RW | 33 | | **v-cell-uv** | V | float | Battery minimum allowed voltage for one cell. Going below this voltage, the BMS will go to deep\_sleep mode. | 3 | RW | 34 | | **c-cell-ot** | C | float | Over temperature threshold for the cells. Going over this threshold and the BMS will go to FAULT mode | 45 | RW | 35 | | **c-cell-ot-charge** | C | float | Over temperature threshold for the cells during charging. Going over this threshold and the BMS will go to FAULT mode | 40 | RW | 36 | | **c-cell-ut** | C | float | Under temperature threshold for the cells. Going under this threshold and the BMS will go to FAULT mode | (-20) | RW | 37 | | **c-cell-ut-charge** | C | float | Under temperature threshold for the cells during charging. Going under this threshold during charging and the BMS will go to FAULT mode | 0 | RW | 38 | | **a-factory** | Ah | float | Battery capacity stated by the factory | 4.6 | RW | 39 | | **t-bms-timeout** | s | uint16\_t | Timeout for the BMS to go to SLEEP mode when the battery is not used. | 600 | RW | 40 | | ~~**t-fault-timeout**~~ | ~~s~~ | ~~uint8\_t~~ | ~~After this timeout, the battery will leave the FAULT mode and go to SLEEP mode. T~~ | ~~60~~ | ~~RW~~ | ~~41~~ | | **t-charge-detect** | s | uint8\_t | During NORMAL mode, if the battery voltage is positive for more than this time, then the BMS will go to CHARGE mode | 1 | RW | 42 | | **t-cb-delay** | s | uint8\_t | Time for the cell balancing function to start after entering the CHARGE mode | 120 | RW | 43 | | **t-charge-relax** | s | uint16\_t | Relaxation after the charge is complete before going to another charge round. | 300 | RW | 44 | | **i-charge-full** | mA | uint16\_t | Current threshold to detect end of charge sequence | 50 | RW | 45 | | **i-charge-max** | A | float | Maximum current threshold to open the switch during charging | 9\*\*.\*\*2 | RW | 46 | | **i-out-max** | A | float | Maximum current threshold to open the switch during normal operation, if not overruled | 60 | RW | 47 | | **v-cell-margin** | mV | uint8\_t | Cell voltage charge margin to decide or not to go through another topping charge cycle | 30 | RW | 48 | | ~~**t-ocv-cyclic0**~~ | ~~s~~ | ~~int32\_t~~ | ~~OCV measurement cyclic timer start (timer is increase by 50% at each cycle)~~ | ~~300~~ | ~~RW~~ | ~~49~~ | | ~~**t-ocv-cyclic1**~~ | ~~s~~ | ~~int32\_t~~ | ~~OCV measurement cyclic timer final (timer is increase by 50% at each cycle)~~ | ~~86400~~ | ~~RW~~ | ~~50~~ | | **c-pcb-ut** | C | float | Minimal ambient temperature (measured on the PCB) | -20 | RW | 51 | | **c-pcb-ot** | C | float | Maximal ambient temperature (measured on the PCB) | 45 | RW | 52 | | **v-storage** | V | float | The voltage what is specified as storage voltage for a cell | 3.8 | RW | 53 | | ~~**ocv-slope**~~ | ~~V/A.min~~ | ~~float~~ | ~~The slope of the OCV curve~~ | ~~0~~ | ~~RW~~ | ~~54~~ | | **batt-eol** | % | uint8\_t | Percentage at which the battery is end-of-life and shouldn’t be used anymore Typically between 90%-50% | 80 | RW | 55 | | **sensor-enable** | - | bool | This variable is used to enable or disable the battery temperature sensor, 0 is disabled, 1 is enabled | 0 | RW | 56 | | **self-discharge-enable** | - | bool | this variable is used to enable or disable the SELF\_DISCHARGE state, 0 is disabled, 1 is enabled | 1 | RW | 57 | | **uavcan\_node\_static\_id\*** | - | uint8\_t | This is the node ID of the UAVCAN message | 255 | RW | 58 | | **uavcan-subject-id\*** | - | uint16\_t | This is the subject ID of the UAVCAN message | 4096 | RW | 59 | | **uavcan-fd-mode\*** | - | uint8\_t | If true CANFD is used, otherwise classic CAN is used | 0 | RW | 60 | | **uavcan-bitrate\*** | bit/s | int32\_t | the bitrate of classical can or CAN FD arbitration bitrate | 1000000 | RW | 61 | | **uavcan-fd-bitrate\*** | bit/s | int32\_t | the bitrate of CAN FD data bitrate | 4000000 | RW | 62 | A ~~line~~ means this is not implemented yet.\ \*these parameters will only be implemented during startup of the BMS \ BMS hardware parameters list ---------------------------- | **Parameter** | **Unit** | **Datatype** | **Description** | **Default** | **RO/RW** | **No** | | ------------- | -------- | ------------ | ----------------------------------------------------------------------------------------- | ----------- | --------- | ------ | | **v-min** | V | uint8\_t | Minimum stack voltage for the BMS board to be fully functional | 6 | RW | 63 | | **v-max** | V | uint8\_t | Maximum stack voltage allowed by the BMS board | 26 | RW | 64 | | **i-peak** | A | uint16\_t | Maximum peak current that can be measured by the BMS board | 200 | RW | 65 | | **i-max** | A | uint8\_t | Maximum DC current allowed in the BMS board (limited by power dissipation in the MOSFETs) | 60 | RW | 66 | | **i-short** | A | uint16\_t | short circuit current threshold (typical: 550A, min: 500A, max: 600A) | 500 | RW | 67 | | **t-short** | us | uint8\_t | Blanking time for the short circuit detection | 20 | RW | 68 | | **i-bal** | mA | uint8\_t | Cell balancing current under 4.2V with cell balancing resistors of 82 ohms | 50 | RW | 69 |