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Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:58
From version 55.2
edited by Admin
on 2026/04/30 15:40
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

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30 30  
31 31  === SOC estimation ===
32 32  
33 -The BMS Mini device calculates the state of charge (SOC) of each cell by using following algorithms:
33 +The BMS Mini S / BMS Mini device calculates the state of charge (SOC) of each cell by using following algorithms:
34 34  
35 35  The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
36 36  
... ... @@ -87,7 +87,7 @@
87 87  
88 88  === SOC correction ===
89 89  
90 -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"]]).
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 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;
103 -* 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.
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.
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.
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.
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.
159 159  
160 160  Signal generation conditions:
161 161  
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200 200  
201 201  === Charge map ===
202 202  
203 -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.
204 204  
205 205  Calculated current values are sending to a charger or an intellectual load over the CAN bus.
206 206  
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227 227  
228 228  === Discharge map ===
229 229  
230 -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.
231 231  
232 232  Calculated current values are sending to a charger or an intellectual load over the CAN bus.
233 233  
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255 255  
256 256  === Main contactor ===
257 257  
258 -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.
259 259  
260 260  The Main contactor algorithm supports the following modes:
261 261  
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488 488  
489 489  === Charge/Discharge ===
490 490  
491 -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.
492 492  
493 493  Charge/Discharge contactor has three algorithms of operation:
494 494  
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525 525  
526 526  === Discharge (AUX) ===
527 527  
528 -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.
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  
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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 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.
582 582  
583 -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.
584 584  
585 585  To change the cell balancing parameters, select the "Control → Cell balancing" section:
586 586  
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604 604  
605 605  === Power down ===
606 606  
607 -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.
608 608  
609 609  Shutting down the battery system is performed according to the following conditions:
610 610  
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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 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.
615 615  
616 616  To change the parameters of the power down control, select the "Control → Power down" section:
617 617  
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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 device can automatically determine the battery discharge characteristic.
690 +The BMS Mini S / 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