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Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:56
From version 76.4
edited by Admin
on 2026/03/31 12:36
Change comment: There is no comment for this version
To version 42.2
edited by Admin
on 2025/02/24 10:57
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -12,31 +12,27 @@
12 12  
13 13  In this section:
14 14  
15 -* **Cell capacity** – nominal capacity of cells, Ah;
16 -* **Cell resistance** – nominal (maximum) internal resistance of the cells, Ohm;
17 -* **Connection of cells:**
18 -** **Serial **– all cells are connected in series in a single string.
19 -** **Parallel-Serial **– cells are grouped in parallel and serial items;
20 -* **Parallel-Serial: Number of Logic devices in a chain**;
21 -* **Parallel-Serial: Number of parallel chains in a block**;
22 -* **Parallel-Serial: Number of serial blocks in a string**;
23 -* **Relax time (after charging)** – a relaxation time after charging, second;
24 -* **Relax time (atfer discharging)** – a relaxation time after discharging, second;
25 -* **Reset SOC** – a command to reset cells state of charge. New cell SOC values will be calculated based on cell voltage and “Uocv (open-circuit voltage) table”: in the “Control → SOC estimation” section;
26 -* **Reset resistance** – a command to reset cells resistance to “Cell resistance” value;
27 -* **Reset capacity** – a command to reset cells capacity to “Cell capacity” value;
28 -* **Method of calculating the battery voltage***:
29 -** **Summation of cell voltages** – the overall voltage is calculated as on sum of all cells in the battery;
30 -** **Using voltage before contactors** – the overall voltage is estimated as voltage before contactors measured by BMS.
15 +* Cell capacity – nominal capacity of cells, Ah;
16 +* Cell resistance – nominal (maximum) internal resistance of the cells, Ohm;
17 +* Relax time (after charging) – a relaxation time after charging, second;
18 +* Relax time (atfer discharging) – a relaxation time after discharging, second;
19 +* Reset parameters – a command to reset cells state of charge, capacity, and resistance;
20 +* Method of calculating the battery voltage:
21 +** Summation of cell voltages – the overall voltage is calculated as on sum of all cells in the battery;
22 +** Using voltage before contactors – the overall voltage is estimated as voltage before contactors measured by BMS.
31 31  
32 -The **"Parallel-Serial"** connection works as follows: a bunch of serial connected Logics are grouped into chains. A bunch of parallel connected chains are grouped to blocks. A bunch of serial connected blocks are grouped into string. By configuring the corresponding settings it is possible to create a complex string configuration. Current through each chain will be estimated as a fraction of overall current accordingly to the number of chains in a block.
24 +The values “Capacity” and “Resistance” are used to calculate the SOC of cells and the battery.
33 33  
34 -The values **“Capacity”** and **“Resistance”** are used to calculate the SOC of cells and the battery.
26 +The values of “Relax time” are used to determine the state of the battery. If the battery is in a state of relaxation, the system recalculates the voltage on the cells to the state of charge of the battery.
35 35  
36 -The values of **“Relax time”** are used to determine the state of the battery. If the battery is in a state of relaxation, the system recalculates the voltage on the cells to the state of charge of the battery.
28 +The “Reset parameters” will reset:
37 37  
38 -The **“Reset ”** command is used for starting-up and adjustment of the battery.
30 +* state of charge (new cell SOC values will be calculated based on cell voltage and “Uocv (open-circuit voltage) table”: in the “Control → SOC estimation” section);
31 +* cell resistance to “Cell resistance” value;
32 +* battery capacity to “Cell capacity” value.
39 39  
34 +The “Reset parameters” command is used for starting-up and adjustment of the battery.
35 +
40 40  === SOC estimation ===
41 41  
42 42  The BMS Main 3 device calculates the state of charge of the battery (SOC) using two algorithms:
... ... @@ -75,7 +75,7 @@
75 75  * Minimal SOC – the battery SOC is assumed to be the minimum SOC among the cells;
76 76  * Average SOC – the battery SOC is taken equal to the arithmetic average of the cell SOC;
77 77  * Min-Max SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if any cell has 100% SOC, b) 0% if any cell has 0% SOC;
78 -* Max-Min SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if all cells have 100% SOC, b) 0% if all cells have 0% SOC.
74 +* Max-Min SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if all cells have 100% SOC, b) 0% if all cells have 0% SOC;
79 79  
80 80  Other parameters:
81 81  
... ... @@ -106,27 +106,6 @@
106 106  * Ignore the linear zone – a flag to ignore linear SOC zone while correction (recommended to be unset);
107 107  * Last correction timestamp – time when last correction was made.
108 108  
109 -=== SOH estimation ===
110 -
111 -The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
112 -
113 -* By effective capacity;
114 -* By total charge-.
115 -
116 -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.
117 -
118 -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.
119 -
120 -To configure parameters for battery state of health calculation, select the "Control → SOH correction" section:
121 -
122 -[[image:1765447975228-766.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]In this section:
123 -
124 -* Algorithm:
125 -** By effective capacity;
126 -** By total charge-;
127 -* Total charge: Charge- –  total amount of charge- for expected SOH;
128 -* Total charge: SOH –  expected SOH value at the total amount of charge-.
129 -
130 130  === Resistance estimation ===
131 131  
132 132  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
... ... @@ -238,11 +238,11 @@
238 238  * Enable – a flag to start calculation of the charge current limit;
239 239  * Maximum charge current – a maximum allowable value of the charge current (under normal conditions), A;
240 240  * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
241 -* 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;
242 242  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
243 243  * Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current **Kcc** depending on contactor temperature;
244 244  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
245 -* 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;
246 246  * Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage;
247 247  * 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;
248 248  * Option 4: Cell temperature x Factor – the dependence of the correction factor on maximum cell temperature.
... ... @@ -266,11 +266,11 @@
266 266  * Enable – a flag to start calculation of the discharge current limit;
267 267  * Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions), A;
268 268  * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
269 -* 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;
270 270  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
271 271  * Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature;
272 272  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
273 -* 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;
274 274  * Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage;
275 275  * 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;
276 276  * Option 4: Cell voltage x Factor – the dependence of the correction factor on minimum cell temperature.
... ... @@ -381,20 +381,13 @@
381 381  
382 382  To change the parameters of charging process status, select the "Control → Charging status" section:
383 383  
384 -[[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:
385 385  
386 -In this section:
387 -
388 388  * Current to set the "Charging current present" – a current level to generate the "Charging current present" signal, A;
389 389  * Current to clear the "Charging current present" – a current level to clear the "Charging current present" signal, A;
390 -* 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;
391 -* 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;
392 -* Use actual voltage to generate the "Ready to charge" signal – a flag to disable voltage correction for "Ready to charge" signal;
393 -* 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;
394 394  * 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;
395 -* 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;
396 -* 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;
397 -* 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;
398 398  * Errors 1, 2 to clear the "Ready to charge" – bitfields to choose the errors which will clear the "Ready to charge" signal.
399 399  
400 400  (% class="box infomessage" %)
... ... @@ -408,20 +408,12 @@
408 408  
409 409  To change the parameters of discharging process status, select the "Control → Discharging status" section:
410 410  
411 -[[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:
412 412  
413 -In this section:
414 -
415 415  * Current to set the "Discharging current present" – a current level to generate the "Discharging current present" signal, А;
416 416  * Current to clear the "Discharging current present" – a current level to clear the "Discharging current present" signal, А;
417 -* 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;
418 -* 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;
419 -* Use actual voltage to generate the "Ready to discharge" signal – a flag to disable voltage correction for "Ready to discharge" signal;
420 -* 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;
421 -* 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;
422 -* 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;
423 -* 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;
424 -* 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;
425 425  * Errors 1, 2 to clear the "Ready to discharge" – bitfields to choose the errors which will clear the "Ready to discharge" signal.
426 426  
427 427  === Precharge ===
... ... @@ -434,14 +434,12 @@
434 434  
435 435  To change the parameters of precharge contactor, select the "Control → Precharge" section:
436 436  
437 -[[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"]]
438 438  
439 439  * Precharge current threshold to finish precharging – a minimum current value at which precharging process assumed to be finished, A;
440 440  * 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;
441 441  * Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
442 -* 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;
443 443  * Number of precharging attempts – maximum number of precharging attempts before setting the "Precharge error";
444 -* Delay before current measurement – a delay before first current measurement after closing precharge, millisecond;
445 445  * Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
446 446  * Relaxation between attempts – a duration between precharge attempts, millisecond;
447 447  * Check the power dissipated in the preacharge resistor - a flag to enable the calculation of power dissipated in precharge resistor;
... ... @@ -513,7 +513,7 @@
513 513  * Allow charging only when the "Ready to charge" signal is set – charging contactor will open if "Ready to charge" signal is cleared;
514 514  * Delay before starting charging – a time delay T,,on,, before closing the charging contactor and the allow charging contactor, millisecond;
515 515  * Delay before stopping charging – a time delay T,,off,, before opening the charging contactor, millisecond;
516 -* 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;
517 517  * Errors 1, 2 to open the charging contactor – bitfields to choose the errors which will open the charging contactor;
518 518  * Use custom delays before stopping charging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
519 519  * Custom delay: <error> – delay for specific error, millisecond;
... ... @@ -552,6 +552,8 @@
552 552  **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).
553 553  )))
554 554  
513 +The device supports controlling the precharging contactor (see [[Precharge>>doc:||anchor="HPrecharge"]]).
514 +
555 555  To change the parameters of the battery discharge control algorithm, select the "Control → Discharge" section:
556 556  
557 557  [[image:1735064038329-836.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="273" width="800"]]
... ... @@ -566,7 +566,7 @@
566 566  * Allow charging only when the "Ready to discharge" signal is set – discharging contactor will open if "Ready to discharge" signal is cleared;
567 567  * Delay before starting discharging – a time delay T,,on,, before closing the discharging contactor, millisecond;
568 568  * Delay before stopping discharging – a time delay T,,off,, before opening the discharging contactor, millisecond;
569 -* 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;
570 570  * Errors 1, 2 to open the discharging contactor – bitfields to choose the errors which will open the discharging contactor;
571 571  * Use custom delays before stopping discharging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
572 572  * Custom delay: <error> – specific error delay, millisecond;
... ... @@ -621,6 +621,11 @@
621 621  * the battery voltage is out of range;
622 622  * the errors are detected (configured in the "Errors 1, 2 ..." bitfields).
623 623  
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 +
624 624  To change the parameters of the powering of external equipment, select the "Control → Discharge (AUX)" section:
625 625  
626 626  [[image:1735066190419-838.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
... ... @@ -637,7 +637,7 @@
637 637  * Switch off the discharging (AUX) contactor if the battery voltage is out of the range;
638 638  * Minimum battery voltage, V;
639 639  * Maximum battery voltage, V;
640 -* 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;
641 641  
642 642  === Cell balancing ===
643 643  
... ... @@ -659,10 +659,7 @@
659 659  * the voltage on the cell is less than the balancing stop voltage;
660 660  * the difference between the voltage on the cell and the minimum voltage among the battery cells is less than the balancing stop threshold.
661 661  
662 -(% class="box infomessage" %)
663 -(((
664 664  If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed.
665 -)))
666 666  
667 667  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.
668 668  
... ... @@ -679,6 +679,9 @@
679 679  ** Balance on charge – balancing is performed while and after the charging (in the “Charge ON” and “Charge OFF” states);
680 680  ** 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);
681 681  ** 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 +
682 682  * Balancing condition:
683 683  ** Automatic – balancing will be performed automatically if needed conditions are met;
684 684  ** 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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