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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
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To version 56.1
edited by Admin
on 2025/06/19 10:50
Change comment: Загрузить новое вложение 1750330205370-111.png

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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;
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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
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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:1750261016583-434.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="114" width="800"]]
382 382  
383 383  In this section:
384 384  
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386 386  * Current to clear the "Charging current present" – a current level to clear the "Charging current present" signal, A;
387 387  * 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;
388 388  * 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;
390 390  * 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;
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" %)
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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"]]
382 +[[image:1750261289590-730.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]]
409 409  
410 410  In this section:
411 411  
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413 413  * Current to clear the "Discharging current present" – a current level to clear the "Discharging current present" signal, А;
414 414  * 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;
415 415  * 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;
417 417  * 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;
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 ===
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