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Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:58
From version 55.3
edited by Admin
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To version 48.1
edited by Admin
on 2025/11/10 11:41
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Summary

Details

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Content
... ... @@ -12,37 +12,35 @@
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 cell, Ohm;
17 -* **Relax time (after charging)** – a relaxation time after charging, second;
18 -* **Relax time (after discharging)** – the relaxation time after discharging, second;
19 -* **Reset parameters **– a command to reset cells state of charge, capacity, and resistance.
15 +* Cell capacity – nominal capacity of cells, Ah;
16 +* Cell resistance – nominal (maximum) internal resistance of the cell, Ohm;
17 +* Relax time (after charging) – a relaxation time after charging, second;
18 +* Relax time (atfer discharging) – the relaxation time after discharging, second;
19 +* Reset parameters– a command to reset cells state of charge, capacity, and resistance.
20 20  
21 -The values “**Capacity**” and “**Resistance**” are used to calculate the SOC of cells and the battery.
21 +The values “Capacity” and “Resistance” are used to calculate the SOC of cells and the battery.
22 22  
23 -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.
23 +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.
24 24  
25 -The “**Reset parameters**”  is used for starting-up and adjustment of the battery and will reset:
25 +The “Reset parameters” will reset:
26 26  
27 27  * 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);
28 28  * cell resistance to “Cell resistance” value;
29 29  * battery capacity to “Cell capacity” value.
30 30  
31 +The “Reset parameters” command is used for starting-up and adjustment of the battery.
32 +
31 31  === SOC estimation ===
32 32  
33 -The BMS Mini S / BMS Mini device calculates the state of charge (SOC) of each cell by using following algorithms:
35 +The BMS Mini device calculates the state of charge of the battery (SOC) using two algorithms:
34 34  
35 -The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
37 +* by open circuit voltage;
38 +* by voltage and current.
36 36  
37 -The **“Current and voltage (simplified)”** SOC calculation algorithm works as follows:
40 +It is recommended to use the algorithm of calculation of SOC by voltage and current.
38 38  
39 -* if I = 0, the battery is in the state of relaxation and the cell voltage Uocv is outside the [U,,ocv[point 1],,; U,,ocv[point 2],,], the SOC calculation is based on the tabular dependency Uocv = Uocv(SOC, t °C);
40 -* in any other cases, the SOC value is proportional to the charge (coulomb) passed through the battery (current time integral).
42 +To change the estimation algorithm for calculating the battery SOC, select the "Control → SOC estimation → Algorithm" section:
41 41  
42 -The **“Current and voltage (enhanced)” **SOC calculation algorithm differs from the simplified algorithm by online correction of the effective capacity. When using this algorithm, it is necessary to fine tune the tabular dependence Uocv = Uocv (SOC, t °C).
43 -
44 -To change the algorithm for calculating the SOC, select the "Control → SOC estimation" section:
45 -
46 46  [[image:1733746733477-590.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="166" width="800"]]
47 47  
48 48  The following estimation algorithms supported:
... ... @@ -64,30 +64,28 @@
64 64  
65 65  [[image:1733746733478-414.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="167" width="800"]]
66 66  
67 -In this section:
65 +The following battery Final SOC calculation methods are supported:
68 68  
69 -* **Algorithm:**
70 -** **Voltage **– by open circuit voltage;
71 -** **Current and voltage (simplified)** – recommended for LFP cells;
72 -** **Current and voltage (enhanced)** – recommended for NMC cells:
73 -* **Final SOC** – method of calculating overall SOC of battery:
74 -** **Minimal SOC** – the battery SOC is assumed to be the minimum SOC among the cells;
75 -** **Average SOC** – the battery SOC is taken equal to the arithmetic average of the cell SOC;
76 -** **Min-Max SOC** – the battery SOC is calculated based on the minimum and maximum SOC of the cells (recommended). Final SOC will be a) 100% if __any cell__ has 100% SOC, b) 0% if __any cell__ has 0% SOC;
77 -** **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.
78 -* **Scale the final SOC** – a flag to scale the battery SOC by the following values;
79 -* **SOC corresponding to 0%** – the battery SOC that sets to be 0%;
80 -* **SOC corresponding to 100%** – the battery SOC that sets to be 100%.
81 -* **Uocv (open-circuit voltage) table** – the dependence of the cell open circuit voltage Uocv on SOC and the cell temperature (selected for specific batteries);
82 -* **Linear zone** - linear zone of the Uocv = Uocv(SOC, t°C) dependency, inside which the cell voltage changes insignificantly:
83 -** **Linear zone: point 1** – starting point of the Uocv linear zone;
84 -** **Linear zone: point 2** – ending point of the Uocv linear zone;
85 -* **Coulomb counting correction (temperature)** – the dependence of battery capacity on temperature;
86 -* **Coulomb counting correction (cycles)** – the dependence of battery capacity on the number of charge-discharge cycles.
67 +* Minimal SOC – SOC of the modular battery is assumed to be the minimum SOC among the battery modules;
68 +* Average SOC – SOC of the modular battery is taken equal to the arithmetic average of the SOC of the battery modules;
69 +* 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;
70 +* 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.
87 87  
72 +Other parameters:
73 +
74 +* Scale the final SOC – a flag to scale the battery SOC by the following values;
75 +* SOC corresponding to 0% – the battery SOC that sets to be 0%;
76 +* SOC corresponding to 100% – the battery SOC that sets to be 100%.
77 +* Uocv (open-circuit voltage) table – the dependence of the cell open circuit voltage Uocv on SOC and the cell temperature (selected for specific batteries);
78 +* Linear zone - linear zone of the Uocv = Uocv(SOC, t°C) dependency, inside which the cell voltage changes insignificantly:
79 +** Linear zone: point 1 – starting point of the Uocv linear zone;
80 +** Linear zone: point 2 – ending point of the Uocv linear zone;
81 +* Coulomb counting correction (temperature) – the dependence of battery capacity on temperature;
82 +* Coulomb counting correction (cycles) – the dependence of battery capacity on the number of charge-discharge cycles.
83 +
88 88  === SOC correction ===
89 89  
90 -The BMS Mini S / BMS Mini device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see [[SOC estimation>>doc:||anchor="HSOCestimation"]]).
86 +The BMS Mini device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see [[SOC estimation>>doc:||anchor="HSOCestimation"]]).
91 91  
92 92  To configure parameters for periodically correcting the battery state of charge, select the "Control → SOC correction" section:
93 93  
... ... @@ -95,12 +95,12 @@
95 95  
96 96  In this section:
97 97  
98 -* **Enable **– a flag to enable the SOC correction;
99 -* **Shutdown period** – a time the battery is off, day. If the BMS detects on its startup that it was off during the “Shutdown period” time, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t);
100 -* **Correction period** – a period of correcting the battery SOC, day. If the BMS detects that the last correction was more than the “Correction period” ago, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t) and tunes it gradually during the “SOC change time”.
101 -* **SOC change time** – a duration of the linear changing the battery SOC to the value calculated by the correction algorithm, minute;
102 -* **Ignore the linear zone** – a flag to ignore linear SOC zone while correction (recommended to be unset);
103 -* **Last correction timestamp** – time when last correction was made.
94 +* Enable – a flag to enable SOC correction;
95 +* Shutdown period – a time the battery is off, day. If the BMS detects on its startup that it was off during the “Shutdown period” time, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t);
96 +* Correction period – a period of correcting the battery SOC, day. If the BMS detects that the last correction was more than the “Correction period” ago, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t) and tunes it gradually during the “SOC change time”.
97 +* SOC change time – a duration of the linear changing the battery SOC to the value calculated by the correction algorithm, minute;
98 +* Ignore the linear zone – a flag to ignore linear SOC zone while correction;
99 +* Last correction timestamp – time when last correction was made.
104 104  
105 105  === Resistance estimation ===
106 106  
... ... @@ -134,11 +134,11 @@
134 134  
135 135  In this section:
136 136  
137 -* **Current stabilization time**, millisecond;
138 -* **Maximum calculation period** – maximum time between resistance measurements. If more time has elapsed since the last determination of the stabilized current I,,stable,, than is determined in this field, the resistance calculation is not performed, second;
139 -* **Maximum resistance factor** – the coefficient of calculation of the maximum acceptable resistance of the cell;
140 -* **Minimum SOC** – minimum cell SOC value for resistance calculation;
141 -* **Maximum SOC** – maximum cell SOC value for resistance calculation.
133 +* Current stabilization time, millisecond;
134 +* Maximum calculation period – maximum time between resistance measurements. If more time has elapsed since the last determination of the stabilized current I,,stable,, than is determined in this field, the resistance calculation is not performed, second;
135 +* Maximum resistance factor – the coefficient of calculation of the maximum acceptable resistance of the cell;
136 +* Minimum SOC – minimum cell SOC value for resistance calculation;
137 +* Maximum SOC – maximum cell SOC value for resistance calculation.
142 142  
143 143  The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance/2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see [[Common settings>>doc:||anchor="HCommonsettings"]]). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).
144 144  
... ... @@ -150,12 +150,12 @@
150 150  
151 151  In this section:
152 152  
153 -* **Enable **– a flag to enable signal generation;
154 -* **Minimum SOC**, %;
155 -* **Tolerant SOC**, %;
156 -* **Delay before setting the signal**, second;
157 -* **Delay before clearing the signal**, second;
158 -* **Lock** – lock the signal until the device is reset.
149 +* Enable – a flag to enable signal generation;
150 +* Minimum SOC, %;
151 +* Tolerant SOC, %;
152 +* Delay before setting the signal, second;
153 +* Delay before clearing the signal, second;
154 +* Lock – lock the signal until the device is reset.
159 159  
160 160  Signal generation conditions:
161 161  
... ... @@ -200,7 +200,7 @@
200 200  
201 201  === Charge map ===
202 202  
203 -The BMS Mini S / BMS Mini device calculates maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
199 +The BMS Mini device calculates maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
204 204  
205 205  Calculated current values are sending to a charger or an intellectual load over the CAN bus.
206 206  
... ... @@ -227,7 +227,7 @@
227 227  
228 228  === Discharge map ===
229 229  
230 -The BMS Mini S / BMS Mini device calculates maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
226 +The BMS Mini device calculates maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
231 231  
232 232  Calculated current values are sending to a charger or an intellectual load over the CAN bus.
233 233  
... ... @@ -255,7 +255,7 @@
255 255  
256 256  === Main contactor ===
257 257  
258 -The BMS Mini S / BMS Mini device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in a case of sealing of the charging or discharging contactors.
254 +The BMS Mini device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in a case of sealing of the charging or discharging contactors.
259 259  
260 260  The Main contactor algorithm supports the following modes:
261 261  
... ... @@ -327,7 +327,8 @@
327 327  
328 328  To change the parameters of discharging process status, select the "Control → Discharging status" section:
329 329  
330 -[[image:1762774840204-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="146" width="800"]]In this section:
326 +[[image:1762774840204-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="146" width="800"]]
327 +In this section:
331 331  
332 332  * Current to set the "Discharging current present" – a current level to generate the "Discharging current present" signal, А;
333 333  * Current to clear the "Discharging current present" – a current level to clear the "Discharging current present" signal, А;
... ... @@ -338,7 +338,6 @@
338 338  * 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;
339 339  * 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;
340 340  * 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;
341 -* Clear the 'Ready to discharge' signal if the 'Low SOC' signal is set;
342 342  * Errors 1, 2 to clear the "Ready to discharge" – bitfields to choose the errors which will clear the "Ready to discharge" signal.
343 343  
344 344  === Precharge ===
... ... @@ -347,11 +347,9 @@
347 347  
348 348  BMS Main 3 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors. Also BMS can measure the power dissipated on precharge resistor and generate an error if it greater than configured limit.
349 349  
350 -To change the parameters of precharge contactor, select the "Control → Precharge" section:
351 -
352 352  [[image:1754931813173-804.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="172" width="800"]]
353 353  
354 -In this section:
348 +To change the parameters of precharge contactor, select the "Control → Precharge" section:
355 355  
356 356  * Precharge current threshold to finish precharging – a minimum current value at which precharging process assumed to be finished, A;
357 357  * 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;
... ... @@ -488,7 +488,7 @@
488 488  
489 489  === Charge/Discharge ===
490 490  
491 -The BMS Mini S / BMS Mini device can control the charging/discharging contactor that is used to both charge and discharge the battery.
485 +The BMS Mini device can control the charging/discharging contactor that is used to both charge and discharge the battery.
492 492  
493 493  Charge/Discharge contactor has three algorithms of operation:
494 494  
... ... @@ -525,7 +525,7 @@
525 525  
526 526  === Discharge (AUX) ===
527 527  
528 -The BMS Mini S / BMS Mini device can control the power supply of external equipment using the auxiliary (AUX) discharging contactor. An example of external equipment can be an inverter that converts DC to AC to power a service laptop and other devices.
522 +The BMS Mini device can control the power supply of external equipment using the auxiliary (AUX) discharging contactor. An example of external equipment can be an inverter that converts DC to AC to power a service laptop and other devices.
529 529  
530 530  The power supply circuit of the external equipment using the auxiliary (AUX) discharging contactor is independent of the battery load circuit. The closing and opening of the auxiliary (AUX) discharging contactor is performed according to its program.
531 531  
... ... @@ -578,9 +578,9 @@
578 578  If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed.
579 579  )))
580 580  
581 -The BMS Mini S / BMS Mini device 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.
575 +The BMS Mini device 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.
582 582  
583 -BMS Mini S / BMS Mini device can force a cell balancing, if its voltage is higher than estimated value.
577 +BMS Mini device can force a cell balancing, if its voltage is higher than estimated value.
584 584  
585 585  To change the cell balancing parameters, select the "Control → Cell balancing" section:
586 586  
... ... @@ -604,7 +604,7 @@
604 604  
605 605  === Power down ===
606 606  
607 -The BMS Mini S / BMS Mini device can shut down itself if the battery voltage is low or the battery is idle for a long time.
601 +The BMS Mini device can shut down itself if the battery voltage is low or the battery is idle for a long time.
608 608  
609 609  Shutting down the battery system is performed according to the following conditions:
610 610  
... ... @@ -611,7 +611,7 @@
611 611  * the battery voltage is below the minimum level;
612 612  * the “Charger connected” signal is cleared for 60 seconds.
613 613  
614 -The BMS Mini S / BMS Mini device also shuts down the battery if it stays in the “Charging OFF”, “Discharging OFF”, “Relaxed (after charging)” or “Relaxed (after discharging)” for the set time.
608 +The BMS Mini device also shuts down the battery if it stays in the “Charging OFF”, “Discharging OFF”, “Relaxed (after charging)” or “Relaxed (after discharging)” for the set time.
615 615  
616 616  To change the parameters of the power down control, select the "Control → Power down" section:
617 617  
... ... @@ -627,13 +627,13 @@
627 627  
628 628  To change the parameters of the heater control algorithm, select the "Control → Heater" section:
629 629  
630 -[[image:1777293968000-235.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="141" width="800"]]
624 +
625 +[[image:1740404973346-344.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
631 631  In this section:
632 632  
633 633  * Enable – a flag to enable heater control;
634 634  * Minimum cell temperature, °C;
635 635  * Tolerant cell temperature, °C;
636 -* Start the heater only if "Charger connected" signal is set;
637 637  * Delay before starting the heater, millisecond;
638 638  * Delay before stopping the heater, millisecond;
639 639  * Errors 1, 2 to turn off the heater – bitfields to choose the errors which will turn off the heater.
... ... @@ -687,7 +687,7 @@
687 687  
688 688  Discharge characteristics of the battery – the dependence Uocv = Uocv (DOD) – is used to determine the tabular dependence Uocv = Uocv (SOC, t °C), which is necessary for calculating the state of charge of the battery.
689 689  
690 -The BMS Mini S / BMS Mini device can automatically determine the battery discharge characteristic.
684 +The BMS Mini device can automatically determine the battery discharge characteristic.
691 691  
692 692  Before starting the process of determining the discharge characteristic, it is necessary to prepare a BMS:
693 693  
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