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Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:56
From version 76.2
edited by Admin
on 2026/03/31 12:14
Change comment: There is no comment for this version
To version 42.3
edited by Admin
on 2025/02/24 10:58
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -14,7 +14,6 @@
14 14  
15 15  * Cell capacity – nominal capacity of cells, Ah;
16 16  * Cell resistance – nominal (maximum) internal resistance of the cells, Ohm;
17 -* Connection of cells –
18 18  * Relax time (after charging) – a relaxation time after charging, second;
19 19  * Relax time (atfer discharging) – a relaxation time after discharging, second;
20 20  * Reset parameters – a command to reset cells state of charge, capacity, and resistance;
... ... @@ -103,27 +103,6 @@
103 103  * Ignore the linear zone – a flag to ignore linear SOC zone while correction (recommended to be unset);
104 104  * Last correction timestamp – time when last correction was made.
105 105  
106 -=== SOH estimation ===
107 -
108 -The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
109 -
110 -* By effective capacity;
111 -* By total charge-.
112 -
113 -In "By effective capacity" mode SOH is calculated as a ratio of effective capacity to nominal capacity. Effective capacity is estimated to DOD value when battery SOC reaches 0%, so SOH is recalculated each full battery discharge.
114 -
115 -In "By total charge-" mode SOH is calculated as a linear function of "Total charge-" counter. While "Total charge-" constantly increases during battery operation, SOH will be linearly decrease at the same time. This mode requires a confirmed data about cell health depending of amount of discharge rate to configure the linear function.
116 -
117 -To configure parameters for battery state of health calculation, select the "Control → SOH correction" section:
118 -
119 -[[image:1765447975228-766.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]In this section:
120 -
121 -* Algorithm:
122 -** By effective capacity;
123 -** By total charge-;
124 -* Total charge: Charge- –  total amount of charge- for expected SOH;
125 -* Total charge: SOH –  expected SOH value at the total amount of charge-.
126 -
127 127  === Resistance estimation ===
128 128  
129 129  Calculation of the resistance of cells is carried out in two ways. The first method is used when the battery passes from a relaxation state to a charge or discharge state, wherein the cell resistance value
... ... @@ -235,11 +235,11 @@
235 235  * Enable – a flag to start calculation of the charge current limit;
236 236  * Maximum charge current – a maximum allowable value of the charge current (under normal conditions), A;
237 237  * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
238 -* Option 1: Limit charge current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current** Kcs** depending on __maximum cell SOC__ and battery temperature;
216 +* Option 1: Limit charge current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current** Kcs** depending on SOC and battery temperature;
239 239  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
240 240  * Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current **Kcc** depending on contactor temperature;
241 241  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
242 -* Option 3: Limit charge current by the maximum cell voltage - a flag to enable correction of maximum allowable charging current **Kcv** depending on __the maximum cell U,,ocv,, voltage__ (corrected due to current and cell resistance)
220 +* Option 3: Limit charge current by the maximum cell voltage - a flag to enable correction of maximum allowable charging current **Kcv** depending on maximum cell voltage;
243 243  * Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage;
244 244  * Option 4: Limit charge current by the cell temperature - a flag to enable correction of maximum allowable charging current **Kct** depending on maximum cell temperature;
245 245  * Option 4: Cell temperature x Factor – the dependence of the correction factor on maximum cell temperature.
... ... @@ -263,11 +263,11 @@
263 263  * Enable – a flag to start calculation of the discharge current limit;
264 264  * Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions), A;
265 265  * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
266 -* Option 1: Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current **Kds **depending on __minimum cell SOC__ and temperature;
244 +* Option 1: Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current **Kds **depending on SOC and temperature;
267 267  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
268 268  * Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature;
269 269  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
270 -* Option 3: Limit discharge current by the cell voltage - a flag to enable correction of maximum allowable discharging current **Kdv** depending on __the minimum cell U,,ocv,, voltage__ (corrected due to current and cell resistance)
248 +* Option 3: Limit discharge current by the cell voltage - a flag to enable correction of maximum allowable discharging current **Kdv** depending on minimum cell voltage;
271 271  * Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage;
272 272  * Option 4: Limit discharge current by the cell temperature - a flag to enable correction of maximum allowable discharging current **Kdt** depending on maximum cell temperature;
273 273  * Option 4: Cell voltage x Factor – the dependence of the correction factor on minimum cell temperature.
... ... @@ -378,20 +378,13 @@
378 378  
379 379  To change the parameters of charging process status, select the "Control → Charging status" section:
380 380  
381 -[[image:1771432488941-251.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="154" width="800"]]
359 +[[image:1735064935499-941.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="110" width="800"]]In this section:
382 382  
383 -In this section:
384 -
385 385  * Current to set the "Charging current present" – a current level to generate the "Charging current present" signal, A;
386 386  * Current to clear the "Charging current present" – a current level to clear the "Charging current present" signal, A;
387 -* Voltage to clear the “Ready to charge” – a threshold U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared;
388 -* Voltage to reset the “Ready to charge” – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set;
389 -* Use actual voltage to generate the "Ready to charge" signal – a flag to disable voltage correction for "Ready to charge" signal;
390 -* Treat negative currents as zero currents for generating the "Ready to charge" signal – a flag to disable voltage correction for "Ready to charge" signal at discharging current;
363 +* Voltage to clear the “Ready to charge” – a threshold voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared;
364 +* Voltage to reset the “Ready to charge” – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set;
391 391  * Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0;
392 -* Check the 'Charge current limit' value to generate the 'Ready to charge' – a flag to enable check of "Charging current limit" to generate the "Ready to charge" signal;
393 -* Charge current limit to clear the 'Ready to charge' – a threshold charging current limit value, A; if the limit is //above //this level, the “Ready to charge” signal is cleared;
394 -* Charge current limit to set the 'Ready to charge' – a tolerant charging current limit value, A; if the limit is //below //this level, the “Ready to charge” signal is set;
395 395  * Errors 1, 2 to clear the "Ready to charge" – bitfields to choose the errors which will clear the "Ready to charge" signal.
396 396  
397 397  (% class="box infomessage" %)
... ... @@ -405,20 +405,12 @@
405 405  
406 406  To change the parameters of discharging process status, select the "Control → Discharging status" section:
407 407  
408 -[[image:1771431570393-551.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="155" width="800"]]
379 +[[image:1735064980481-209.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]In this section:
409 409  
410 -In this section:
411 -
412 412  * Current to set the "Discharging current present" – a current level to generate the "Discharging current present" signal, А;
413 413  * Current to clear the "Discharging current present" – a current level to clear the "Discharging current present" signal, А;
414 -* Voltage to clear the “Ready to discharge” – a threshold U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
415 -* Voltage to reset the “Ready to discharge” – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set;
416 -* Use actual voltage to generate the "Ready to discharge" signal – a flag to disable voltage correction for "Ready to discharge" signal;
417 -* Treat positive currents as zero currents for generating the "Ready to discharge" signal – a flag to disable voltage correction for "Ready to discharge" signal at charging current;
418 -* Check the 'Discharge current limit' value to generate the 'Ready to discharge' – a flag to enable check of "Discharging current limit" to generate the "Ready to discharge" signal;
419 -* Discharge current limit to clear the 'Ready to discharge' – a threshold discharging current limit value, A; if the limit is //above //this level, the “Ready to discharge” signal is cleared;
420 -* Discharge current limit to set the 'Ready to discharge' – a tolerant discharging current limit value, A; if the limit is //below //this level, the “Ready to discharge” signal is set;
421 -* Clear the 'Ready to discharge' signal if the 'Low SOC' signal is set;
383 +* Voltage to clear the “Ready to discharge” – a threshold voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
384 +* Voltage to reset the “Ready to discharge” – a tolerant voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set;
422 422  * Errors 1, 2 to clear the "Ready to discharge" – bitfields to choose the errors which will clear the "Ready to discharge" signal.
423 423  
424 424  === Precharge ===
... ... @@ -431,14 +431,12 @@
431 431  
432 432  To change the parameters of precharge contactor, select the "Control → Precharge" section:
433 433  
434 -[[image:1750328428183-819.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="800"]]
397 +[[image:1735065073836-743.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="160" width="800"]]
435 435  
436 436  * Precharge current threshold to finish precharging – a minimum current value at which precharging process assumed to be finished, A;
437 437  * Check voltages before and after contactors to finish precharging – a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor;
438 438  * Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
439 -* Keep the precharging relay closed until precharge is finished – a flag to ignore the Precharge time and wait precharging to finish before open precharge relay;
440 440  * Number of precharging attempts – maximum number of precharging attempts before setting the "Precharge error";
441 -* Delay before current measurement – a delay before first current measurement after closing precharge, millisecond;
442 442  * Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
443 443  * Relaxation between attempts – a duration between precharge attempts, millisecond;
444 444  * Check the power dissipated in the preacharge resistor - a flag to enable the calculation of power dissipated in precharge resistor;
... ... @@ -510,7 +510,7 @@
510 510  * Allow charging only when the "Ready to charge" signal is set – charging contactor will open if "Ready to charge" signal is cleared;
511 511  * Delay before starting charging – a time delay T,,on,, before closing the charging contactor and the allow charging contactor, millisecond;
512 512  * Delay before stopping charging – a time delay T,,off,, before opening the charging contactor, millisecond;
513 -* Control the precharging contactor – a flag that allows control of the precharging contactor while closing the charge contactor (see [[Precharge>>path:#HPrecharge]]);
474 +* Control the precharging contactor – a flag that allows control of the precharging contactor while closing the charge contactor;
514 514  * Errors 1, 2 to open the charging contactor – bitfields to choose the errors which will open the charging contactor;
515 515  * Use custom delays before stopping charging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
516 516  * Custom delay: <error> – delay for specific error, millisecond;
... ... @@ -549,6 +549,8 @@
549 549  **Note: **when errors occur in the system, the **Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
550 550  )))
551 551  
513 +The device supports controlling the precharging contactor (see [[Precharge>>doc:||anchor="HPrecharge"]]).
514 +
552 552  To change the parameters of the battery discharge control algorithm, select the "Control → Discharge" section:
553 553  
554 554  [[image:1735064038329-836.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="273" width="800"]]
... ... @@ -563,7 +563,7 @@
563 563  * Allow charging only when the "Ready to discharge" signal is set – discharging contactor will open if "Ready to discharge" signal is cleared;
564 564  * Delay before starting discharging – a time delay T,,on,, before closing the discharging contactor, millisecond;
565 565  * Delay before stopping discharging – a time delay T,,off,, before opening the discharging contactor, millisecond;
566 -* Control the precharging contactor – a flag that allows control of the precharging contactor while closing the discharge contactor (see [[Precharge>>doc:||anchor="HPrecharge"]]);
529 +* Control the precharging contactor – a flag that allows control of the precharging contactor while closing the discharge contactor;
567 567  * Errors 1, 2 to open the discharging contactor – bitfields to choose the errors which will open the discharging contactor;
568 568  * Use custom delays before stopping discharging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
569 569  * Custom delay: <error> – specific error delay, millisecond;
... ... @@ -618,6 +618,11 @@
618 618  * the battery voltage is out of range;
619 619  * the errors are detected (configured in the "Errors 1, 2 ..." bitfields).
620 620  
584 +(% class="box infomessage" %)
585 +(((
586 +**Note: **when errors occur in the system, the **Discharge (AUX) **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
587 +)))
588 +
621 621  To change the parameters of the powering of external equipment, select the "Control → Discharge (AUX)" section:
622 622  
623 623  [[image:1735066190419-838.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
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634 634  * Switch off the discharging (AUX) contactor if the battery voltage is out of the range;
635 635  * Minimum battery voltage, V;
636 636  * Maximum battery voltage, V;
637 -* Errors 1, 2 to open the auxiliary discharging contactor – bitfields to choose the errors which will open the auxiliary discharging contactor.
605 +* Errors 1, 2 to open the auxiliary discharging contactor – bitfields to choose the errors which will open the auxiliary discharging contactor;
638 638  
639 639  === Cell balancing ===
640 640  
... ... @@ -656,10 +656,7 @@
656 656  * the voltage on the cell is less than the balancing stop voltage;
657 657  * the difference between the voltage on the cell and the minimum voltage among the battery cells is less than the balancing stop threshold.
658 658  
659 -(% class="box infomessage" %)
660 -(((
661 661  If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed.
662 -)))
663 663  
664 664  The BMS Main 3 can enable the cell balancing by the external “Balancing request” signal. Balancing process will be started to cells which the voltage is higher than the balancing start voltage and the difference between the cell voltage and the minimum voltage among all the cells is greater than the balancing stop threshold.
665 665  
... ... @@ -676,6 +676,9 @@
676 676  ** Balance on charge – balancing is performed while and after the charging (in the “Charge ON” and “Charge OFF” states);
677 677  ** Balance on charge or relaxed - balancing is performed while and after the charging and in the relaxed state (in “Charge ON”, “Charge OFF”, “Relaxed (after charging)” and “Relaxed (after discharging)” states);
678 678  ** Balance always – balancing is always performed regardless the battery state;
644 +
645 +[[image:1735065666891-686.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="132" width="800"]]
646 +
679 679  * Balancing condition:
680 680  ** Automatic – balancing will be performed automatically if needed conditions are met;
681 681  ** On balancing request – balancing will start only if a remote request is received. In this case cells will start to balance regardless the "Voltage deviation to start balancing" value;
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