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Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:58
From version 55.2
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To version 49.1
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on 2025/11/10 11:41
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... ... @@ -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 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:
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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 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"]]).
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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 ===
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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"]]
625 +
626 +[[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.
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