Skip to Content

Changes for page 3.4 Protections

Last modified by Admin on 2025/11/10 11:45
From version 24.2
edited by Admin
on 2025/11/10 11:20
Change comment: There is no comment for this version
To version 9.1
edited by Admin
on 2025/02/26 12:44
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -96,7 +96,7 @@
96 96  * Enable – a flag to enable the protection;
97 97  * Minimum cell voltage, V;
98 98  * Tolerant cell voltage, V;
99 -* Check the open circuit voltage instead of the actual voltage – a flag to use the U,,ocv,, (corrected due to current and cell resistance) cell voltage instead of measured value;
99 +* Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
100 100  * Delay before setting the error, millisecond;
101 101  * Delay before clearing the error, second;
102 102  * Lock – a flag to block the error until the device is restarted.
... ... @@ -124,7 +124,7 @@
124 124  * Enable – a flag to enable the protection;
125 125  * Maximum cell voltage, V;
126 126  * Tolerant cell voltage, V;
127 -* Check the open circuit voltage instead of the actual voltage – a flag to use the U,,ocv,, (corrected due to current and cell resistance) cell voltage instead of measured value;
127 +* Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
128 128  * Delay before setting the error, millisecond;
129 129  * Delay before clearing the error, second;
130 130  * Lock – a flag to block the error until the device is restarted.
... ... @@ -139,33 +139,6 @@
139 139  
140 140  * the maximum voltage among all cells of the battery is less than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
141 141  
142 -=== Cell imbalance ===
143 -
144 -The BMS Mini S device implements battery protection from too much cell imbalance. If balancing algorithm is not enough to compensate battery imbalance, then imbalance protection generates an error when imbalance is above estimated threshold.
145 -
146 -To change the battery protection parameters from cell imbalance, select the "Protections → Cell imbalance" section:
147 -
148 -[[image:1762772978976-565.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="800"]]
149 -
150 -In this section:
151 -
152 -* Enable – a flag to enable the protection;
153 -* Maximum cell imbalance, V;
154 -* Tolerant cell imbalance, V;
155 -* Delay before setting the error, millisecond;
156 -* Delay before clearing the error, second;
157 -* Lock – a flag to block the error until the device is restarted.
158 -
159 -As a result of the operation of the battery protection from cell imbalance, the "Cell imbalance” error is generated.
160 -
161 -Error generation conditions:
162 -
163 -* the voltage difference between the most charged cell and the least charged cell is more than the “Maximum cell imbalance” value for the “Delay before setting the error” time.
164 -
165 -Conditions for removing the error:
166 -
167 -* the voltage difference between the most charged cell and the least charged cell is less than the “Tolerant cell imbalance” value for the “Delay before clearing the error” time.
168 -
169 169  === Low temperature ===
170 170  
171 171  The BMS Mini device implements battery protection from too low temperature.
... ... @@ -309,35 +309,6 @@
309 309  If there is the "Cell count error", the **“Critical error” **is generated.
310 310  )))
311 311  
312 -=== Temperature sensor count ===
313 -
314 -To change the protection parameters from the mismatch of the number of temperature sensors to the set value, select the "Protections → Temperature sensor count" section:
315 -
316 -[[image:1762773073782-768.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="130" width="800"]]
317 -
318 -In this section:
319 -
320 -* Enable – a flag to enable the protection;
321 -* Number of cells – a number of temperature sensors connected to the BMS;
322 -* Delay before setting the error, millisecond;
323 -* Delay before clearing the error, second;
324 -* Lock – a flag to block the error until the device is restarted.
325 -
326 -As a result of the operation of the protection from the mismatch of the number of cells, the "T-sensor count error" is generated.
327 -
328 -Error generation conditions:
329 -
330 -* the number of temperature sensors connected to the BMS is **not equal** to the “Number of temperature sensors” value during the “Delay before setting the error” time.
331 -
332 -Conditions for removing the error:
333 -
334 -* the number of temperature sensors connected to the BMS is **equal** to the “Number of temperature sensors” value during the “Delay before clearing the error” time.
335 -
336 -(% class="box warningmessage" %)
337 -(((
338 -If there is the "T-sensor count error", the **“Critical error” **is generated**.**
339 -)))
340 -
341 341  === Short circuit ===
342 342  
343 343  The BMS Mini device implements a protection of power circuits (contactors, power wires) against overheating caused by the flow of high current for a long time.
... ... @@ -433,19 +433,6 @@
433 433  If there is the “Current sensor error”, the **“Critical error” **is generated.
434 434  )))
435 435  
436 -=== MOSFET ===
437 -
438 -BMS Mini S device checks the status of MOSFET switches that are used to control the contactors. To change the parameters of the MOSFET switch protection, select the "Protections → MOSFET " section:
439 -
440 -[[image:1762773566548-852.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]]
441 -
442 -In this section:
443 -
444 -* Delay before clearing the error, second;
445 -* Lock – a flag to block the error until the device is restarted.
446 -
447 -The “MOSFET error” occurs when the device detects a shortage in contactor coil control circuit or an overheating of the MOSFET switch. Error is removed when the temperature of power switch is normal during “Delay before clearing the error” time.
448 -
449 449  === Charge contactor cycles ===
450 450  
451 451  The BMS Mini device protects the charging contactor against frequent switching.
... ... @@ -473,7 +473,7 @@
473 473  
474 474  * the “Delay before clearing the error” time has passed since the error was generated.
475 475  
476 -=== Discharge contactor cycles ===
407 +=== Discharge contactor cycles protection ===
477 477  
478 478  The BMS Mini device protects the discharging contactor against frequent switching.
479 479  
... ... @@ -589,11 +589,6 @@
589 589  
590 590  * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
591 591  
592 -(% class="box warningmessage" %)
593 -(((
594 -If there is the "Stuck contactor" error, the **“Critical error” **is generated.
595 -)))
596 -
597 597  === Contactor feedback ===
598 598  
599 599  The BMS Mini device can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, the feedback signal must be connected to corresponding contactor feedback pin on X1 header.
... ... @@ -613,11 +613,6 @@
613 613  
614 614  * a command for charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
615 615  
616 -(% class="box warningmessage" %)
617 -(((
618 -If there is the "Contactor feedback" error, the **“Critical error” **is generated.
619 -)))
620 -
621 621  === Insulation ===
622 622  
623 623  The BMS Mini device can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
... ... @@ -639,11 +639,6 @@
639 639  
640 640  Error is set if corresponding discrete input is set up and it receives logical zero.
641 641  
642 -(% class="box warningmessage" %)
643 -(((
644 -If there is the "Insulation" error, the **“Critical error” **is generated.
645 -)))
646 -
647 647  === Critical error ===
648 648  
649 649  To change the critical error parameters, select the "Protections → Critical error" section:
... ... @@ -660,26 +660,3 @@
660 660  The "Critical error" signal is generated if at least one of the critical errors (see [[Errors>>doc:Battery management systems.Additional information.1\. Battery controllers\: signals and errors.WebHome||anchor="HErrors"]]) is generated during the “Delay before setting the error” time.
661 661  
662 662  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
663 -
664 -=== General error ===
665 -
666 -To change the general error parameters, select the "Protections → Critical error" section:
667 -
668 -[[image:1740573914327-561.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="129" width="800"]]
669 -
670 -In this section:
671 -
672 -* Enable – a flag to enable the protection;
673 -* Delay before setting the error, millisecond;
674 -* Delay before clearing the error, second;
675 -* Lock – a flag to block the error until the device is restarted;
676 -* Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
677 -
678 -The “General error” is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
679 -
680 -The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
681 -
682 -(% class="box warningmessage" %)
683 -(((
684 -The state of the “General error” can be assigned to a discrete output or to a power switch.
685 -)))
1740573914327-561.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -19.6 KB
Content
1762772949184-209.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -18.0 KB
Content
1762772978976-565.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -18.0 KB
Content
1762773073782-768.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -16.6 KB
Content
1762773136224-775.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -16.6 KB
Content
1762773285560-458.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -16.1 KB
Content
1762773566548-852.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -16.1 KB
Content