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Changes for page 3.3 Control

Last modified by Admin on 2025/12/11 10:32
From version 68.1
edited by Admin
on 2025/12/11 10:17
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To version 42.5
edited by Admin
on 2025/02/24 12:22
Change comment: There is no comment for this version

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... ... @@ -102,27 +102,6 @@
102 102  * Ignore the linear zone – a flag to ignore linear SOC zone while correction (recommended to be unset);
103 103  * Last correction timestamp – time when last correction was made.
104 104  
105 -=== SOH estimation ===
106 -
107 -The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
108 -
109 -* By effective capacity;
110 -* By total charge-.
111 -
112 -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.
113 -
114 -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 cell data to set the expecting SOH at the expecting amount of charge-.
115 -
116 -To configure parameters for battery state of health calculation, select the "Control → SOH correction" section:
117 -
118 -[[image:1765447975228-766.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]In this section:
119 -
120 -* Algorithm:
121 -** By effective capacity;
122 -** By total charge-;
123 -* Total charge: Charge- –  total amount of charge- for expected SOH;
124 -* Total charge: SOH –  expected SOH value at the total amount of charge-.
125 -
126 126  === Resistance estimation ===
127 127  
128 128  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
... ... @@ -234,11 +234,11 @@
234 234  * Enable – a flag to start calculation of the charge current limit;
235 235  * Maximum charge current – a maximum allowable value of the charge current (under normal conditions), A;
236 236  * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
237 -* 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;
238 238  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
239 239  * Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current **Kcc** depending on contactor temperature;
240 240  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
241 -* 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;
242 242  * Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage;
243 243  * 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;
244 244  * Option 4: Cell temperature x Factor – the dependence of the correction factor on maximum cell temperature.
... ... @@ -262,11 +262,11 @@
262 262  * Enable – a flag to start calculation of the discharge current limit;
263 263  * Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions), A;
264 264  * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
265 -* 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;
266 266  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
267 267  * Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature;
268 268  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
269 -* 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;
270 270  * Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage;
271 271  * 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;
272 272  * Option 4: Cell voltage x Factor – the dependence of the correction factor on minimum cell temperature.
... ... @@ -377,19 +377,13 @@
377 377  
378 378  To change the parameters of charging process status, select the "Control → Charging status" section:
379 379  
380 -[[image:1760435790050-496.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="140" 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:
381 381  
382 -In this section:
383 -
384 384  * Current to set the "Charging current present" – a current level to generate the "Charging current present" signal, A;
385 385  * Current to clear the "Charging current present" – a current level to clear the "Charging current present" signal, A;
386 -* 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;
387 -* 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;
388 -* 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;
389 389  * 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;
390 -* 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;
391 -* 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;
392 -* 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;
393 393  * Errors 1, 2 to clear the "Ready to charge" – bitfields to choose the errors which will clear the "Ready to charge" signal.
394 394  
395 395  (% class="box infomessage" %)
... ... @@ -403,18 +403,12 @@
403 403  
404 404  To change the parameters of discharging process status, select the "Control → Discharging status" section:
405 405  
406 -[[image:1760435802140-274.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="129" 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:
407 407  
408 -In this section:
409 -
410 410  * Current to set the "Discharging current present" – a current level to generate the "Discharging current present" signal, А;
411 411  * Current to clear the "Discharging current present" – a current level to clear the "Discharging current present" signal, А;
412 -* 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;
413 -* 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;
414 -* 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;
415 -* 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;
416 -* 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;
417 -* 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;
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;
418 418  * Errors 1, 2 to clear the "Ready to discharge" – bitfields to choose the errors which will clear the "Ready to discharge" signal.
419 419  
420 420  === Precharge ===
... ... @@ -427,14 +427,12 @@
427 427  
428 428  To change the parameters of precharge contactor, select the "Control → Precharge" section:
429 429  
430 -[[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"]]
431 431  
432 432  * Precharge current threshold to finish precharging – a minimum current value at which precharging process assumed to be finished, A;
433 433  * 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;
434 434  * Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
435 -* 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;
436 436  * Number of precharging attempts – maximum number of precharging attempts before setting the "Precharge error";
437 -* Delay before current measurement – a delay before first current measurement after closing precharge, millisecond;
438 438  * Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
439 439  * Relaxation between attempts – a duration between precharge attempts, millisecond;
440 440  * Check the power dissipated in the preacharge resistor - a flag to enable the calculation of power dissipated in precharge resistor;
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545 545  **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).
546 546  )))
547 547  
513 +The device supports controlling the precharging contactor (see [[Precharge>>doc:||anchor="HPrecharge"]]).
514 +
548 548  To change the parameters of the battery discharge control algorithm, select the "Control → Discharge" section:
549 549  
550 550  [[image:1735064038329-836.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="273" width="800"]]
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559 559  * Allow charging only when the "Ready to discharge" signal is set – discharging contactor will open if "Ready to discharge" signal is cleared;
560 560  * Delay before starting discharging – a time delay T,,on,, before closing the discharging contactor, millisecond;
561 561  * Delay before stopping discharging – a time delay T,,off,, before opening the discharging contactor, millisecond;
562 -* 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;
563 563  * Errors 1, 2 to open the discharging contactor – bitfields to choose the errors which will open the discharging contactor;
564 564  * Use custom delays before stopping discharging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
565 565  * Custom delay: <error> – specific error delay, millisecond;
... ... @@ -614,6 +614,11 @@
614 614  * the battery voltage is out of range;
615 615  * the errors are detected (configured in the "Errors 1, 2 ..." bitfields).
616 616  
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 +
617 617  To change the parameters of the powering of external equipment, select the "Control → Discharge (AUX)" section:
618 618  
619 619  [[image:1735066190419-838.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
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630 630  * Switch off the discharging (AUX) contactor if the battery voltage is out of the range;
631 631  * Minimum battery voltage, V;
632 632  * Maximum battery voltage, V;
633 -* 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;
634 634  
635 635  === Cell balancing ===
636 636  
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652 652  * the voltage on the cell is less than the balancing stop voltage;
653 653  * the difference between the voltage on the cell and the minimum voltage among the battery cells is less than the balancing stop threshold.
654 654  
655 -(% class="box infomessage" %)
656 -(((
657 657  If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed.
658 -)))
659 659  
660 660  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.
661 661  
... ... @@ -672,6 +672,9 @@
672 672  ** Balance on charge – balancing is performed while and after the charging (in the “Charge ON” and “Charge OFF” states);
673 673  ** 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);
674 674  ** 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 +
675 675  * Balancing condition:
676 676  ** Automatic – balancing will be performed automatically if needed conditions are met;
677 677  ** 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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