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Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:58
From version 49.1
edited by Admin
on 2025/11/10 11:41
Change comment: There is no comment for this version
To version 55.3
edited by Admin
on 2026/04/30 15:42
Change comment: There is no comment for this version

Summary

Details

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Content
... ... @@ -12,35 +12,37 @@
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 (atfer 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 (after 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” will reset:
25 +The “**Reset parameters**”  is used for starting-up and adjustment of the battery and 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 -
33 33  === SOC estimation ===
34 34  
35 -The BMS Mini device calculates the state of charge of the battery (SOC) using two algorithms:
33 +The BMS Mini S / BMS Mini device calculates the state of charge (SOC) of each cell by using following algorithms:
36 36  
37 -* by open circuit voltage;
38 -* by voltage and current.
35 +The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
39 39  
40 -It is recommended to use the algorithm of calculation of SOC by voltage and current.
37 +The **“Current and voltage (simplified)”** SOC calculation algorithm works as follows:
41 41  
42 -To change the estimation algorithm for calculating the battery SOC, select the "Control → SOC estimation → Algorithm" section:
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).
43 43  
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 +
44 44  [[image:1733746733477-590.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="166" width="800"]]
45 45  
46 46  The following estimation algorithms supported:
... ... @@ -62,28 +62,30 @@
62 62  
63 63  [[image:1733746733478-414.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="167" width="800"]]
64 64  
65 -The following battery Final SOC calculation methods are supported:
67 +In this section:
66 66  
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.
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.
71 71  
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 -
84 84  === SOC correction ===
85 85  
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"]]).
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"]]).
87 87  
88 88  To configure parameters for periodically correcting the battery state of charge, select the "Control → SOC correction" section:
89 89  
... ... @@ -91,12 +91,12 @@
91 91  
92 92  In this section:
93 93  
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.
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.
100 100  
101 101  === Resistance estimation ===
102 102  
... ... @@ -130,11 +130,11 @@
130 130  
131 131  In this section:
132 132  
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.
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.
138 138  
139 139  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).
140 140  
... ... @@ -146,12 +146,12 @@
146 146  
147 147  In this section:
148 148  
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.
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.
155 155  
156 156  Signal generation conditions:
157 157  
... ... @@ -196,7 +196,7 @@
196 196  
197 197  === Charge map ===
198 198  
199 -The BMS Mini device calculates maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
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.
200 200  
201 201  Calculated current values are sending to a charger or an intellectual load over the CAN bus.
202 202  
... ... @@ -223,7 +223,7 @@
223 223  
224 224  === Discharge map ===
225 225  
226 -The BMS Mini device calculates maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
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.
227 227  
228 228  Calculated current values are sending to a charger or an intellectual load over the CAN bus.
229 229  
... ... @@ -251,7 +251,7 @@
251 251  
252 252  === Main contactor ===
253 253  
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.
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.
255 255  
256 256  The Main contactor algorithm supports the following modes:
257 257  
... ... @@ -334,6 +334,7 @@
334 334  * 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;
335 335  * 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;
336 336  * 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;
337 337  * Errors 1, 2 to clear the "Ready to discharge" – bitfields to choose the errors which will clear the "Ready to discharge" signal.
338 338  
339 339  === Precharge ===
... ... @@ -483,7 +483,7 @@
483 483  
484 484  === Charge/Discharge ===
485 485  
486 -The BMS Mini device can control the charging/discharging contactor that is used to both charge and discharge the battery.
491 +The BMS Mini S / BMS Mini device can control the charging/discharging contactor that is used to both charge and discharge the battery.
487 487  
488 488  Charge/Discharge contactor has three algorithms of operation:
489 489  
... ... @@ -520,7 +520,7 @@
520 520  
521 521  === Discharge (AUX) ===
522 522  
523 -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.
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.
524 524  
525 525  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.
526 526  
... ... @@ -573,9 +573,9 @@
573 573  If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed.
574 574  )))
575 575  
576 -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.
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.
577 577  
578 -BMS Mini device can force a cell balancing, if its voltage is higher than estimated value.
583 +BMS Mini S / BMS Mini device can force a cell balancing, if its voltage is higher than estimated value.
579 579  
580 580  To change the cell balancing parameters, select the "Control → Cell balancing" section:
581 581  
... ... @@ -599,7 +599,7 @@
599 599  
600 600  === Power down ===
601 601  
602 -The BMS Mini device can shut down itself if the battery voltage is low or the battery is idle for a long time.
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.
603 603  
604 604  Shutting down the battery system is performed according to the following conditions:
605 605  
... ... @@ -606,7 +606,7 @@
606 606  * the battery voltage is below the minimum level;
607 607  * the “Charger connected” signal is cleared for 60 seconds.
608 608  
609 -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.
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.
610 610  
611 611  To change the parameters of the power down control, select the "Control → Power down" section:
612 612  
... ... @@ -622,13 +622,13 @@
622 622  
623 623  To change the parameters of the heater control algorithm, select the "Control → Heater" section:
624 624  
625 -
626 -[[image:1740404973346-344.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
630 +[[image:1777293968000-235.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="141" width="800"]]
627 627  In this section:
628 628  
629 629  * Enable – a flag to enable heater control;
630 630  * Minimum cell temperature, °C;
631 631  * Tolerant cell temperature, °C;
636 +* Start the heater only if "Charger connected" signal is set;
632 632  * Delay before starting the heater, millisecond;
633 633  * Delay before stopping the heater, millisecond;
634 634  * Errors 1, 2 to turn off the heater – bitfields to choose the errors which will turn off the heater.
... ... @@ -682,7 +682,7 @@
682 682  
683 683  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.
684 684  
685 -The BMS Mini device can automatically determine the battery discharge characteristic.
690 +The BMS Mini S / BMS Mini device can automatically determine the battery discharge characteristic.
686 686  
687 687  Before starting the process of determining the discharge characteristic, it is necessary to prepare a BMS:
688 688  
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