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Changes for page 3.3 Control

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1 -drafts.BMS Mini S.3\. Configuration.WebHome
1 +Battery management systems.BMS Mini S.3\. Configuration.WebHome
Content
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8 8  
9 9  To change the common BMS settings, select the "Control → Common settings" section:
10 10  
11 -[[image:1733746733473-873.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]]
11 +[[image:1740394523706-519.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
12 12  
13 13  In this section:
14 14  
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16 16  * Cell resistance – nominal (maximum) internal resistance of the cell, Ohm;
17 17  * Relax time (after charging) – a relaxation time after charging, second;
18 18  * Relax time (atfer discharging) – the relaxation time after discharging, second;
19 -* Number of cycles – a number of charge-discharge cycles;
20 20  * Reset parameters– a command to reset cells state of charge, capacity, and resistance.
21 21  
22 -The values “Capacity”, “Resistance”, “Cycles” 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.
23 23  
24 24  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.
25 25  
25 +The “Reset parameters” will reset:
26 +
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 +* cell resistance to “Cell resistance” value;
29 +* battery capacity to “Cell capacity” value.
30 +
26 26  The “Reset parameters” command is used for starting-up and adjustment of the battery.
27 27  
28 28  === SOC estimation ===
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44 44  * Current and voltage (simplified);
45 45  * Current and voltage (enhanced);
46 46  
47 -The SOC calculation algorithm for voltage calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
52 +The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
48 48  
49 -The SOC calculation algorithm “Current and voltage (simplified)” works as follows:
54 +The **“Current and voltage (simplified)”** SOC calculation algorithm works as follows:
50 50  
51 51  * if I = 0, the battery is in a state of relaxation and the cell voltage Uocv is outside the [U,,ocv[point 1],,; U,,ocv[point 2],,], the SOC calculation based on the tabular dependence Uocv = Uocv(SOC, t °C);
52 52  * in any other cases, the SOC value is proportional to the charge (coulomb) passed through the battery (current time integral).
53 53  
54 -The SOC calculation algorithm “Current and voltage (enhanced)” differs from the simplified algorithm by online correction of effective capacitance. When using this algorithm, it is necessary to fine tune the tabular dependence Uocv = Uocv (SOC, t °C).
59 +The **“Current and voltage (enhanced)” **SOC calculation algorithm differs from the simplified algorithm by online correction of effective capacitance. When using this algorithm, it is necessary to fine tune the tabular dependence Uocv = Uocv (SOC, t °C).
55 55  
56 56  To change the algorithm for calculating the Final SOC, select the "Control → SOC estimation → Final SOC" section:
57 57  
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60 60  The following battery Final SOC calculation methods are supported:
61 61  
62 62  * Minimal SOC – SOC of the modular battery is assumed to be the minimum SOC among the battery modules;
63 -* Average SOC – SOC of the modular battery is taken equal to the arithmetic average of the SOC of 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.
64 64  
65 65  To change other settings of SOC estimation, select the "Control → SOC estimation” section:
66 66  
67 -[[image:1733746733479-261.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="165" width="800"]]
68 68  
69 69  In this section:
70 70  
77 +* (((
78 +Other parameters:
79 +)))
71 71  * Scale the final SOC – a flag to scale the battery SOC by the following values;
72 -* SOC corresponding to 0% – battery SOC that sets to be 0%;
73 -* SOC corresponding to 100% – battery SOC that sets to be 100%.
81 +* SOC corresponding to 0% – the battery SOC that sets to be 0%;
82 +* SOC corresponding to 100% – the battery SOC that sets to be 100%.
74 74  * Uocv (open-circuit voltage) table – the dependence of the cell open circuit voltage Uocv on SOC and the cell temperature (selected for specific batteries);
75 -
76 -[[image:1733746733480-919.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="484" width="800"]]
77 -
78 -* Linear zone: point 1 – starting point of the linear zone of Uocv dependence;
79 -* Linear zone: point 2 – ending point of the linear zone of Uocv dependence;
84 +* Linear zone - linear zone of the Uocv = Uocv(SOC, t°C) dependency, inside which the cell voltage changes insignificantly:
85 +** Linear zone: point 1 – starting point of the Uocv linear zone;
86 +** Linear zone: point 2 – ending point of the Uocv linear zone;
80 80  * Coulomb counting correction (temperature) – the dependence of battery capacity on temperature;
81 -
82 -[[image:1733746733481-286.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="160" width="800"]]
83 -
84 84  * Coulomb counting correction (cycles) – the dependence of battery capacity on the number of charge-discharge cycles.
85 85  
86 -[[image:1733746733482-538.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
87 87  
88 -
89 89  === SOC correction ===
90 90  
91 -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 section **SOC estimation**).
93 +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"]]).
92 92  
93 93  To configure parameters for periodically correcting the battery state of charge, select the "Control → SOC correction" section:
94 94  
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133 133  * Minimum SOC – minimum cell SOC value for resistance calculation;
134 134  * Maximum SOC – maximum cell SOC value for resistance calculation.
135 135  
136 -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). 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).
138 +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).
137 137  
138 138  === Charge map ===
139 139  
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201 201  
202 202  Discharging current limit = Maximum discharging current × Kds × Kdc × Kdv
203 203  
204 -
205 205  === Charge ===
206 206  
207 207  There are two contactors that serve charging the battery: a charging contactor and an allow charging contactor. With the help of the allow charging contactor, the BMS commands the charger to start or stop charging.
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273 273  * Voltage to reset the “Ready to charge” – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set;
274 274  * Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0.
275 275  
277 +(% class="box infomessage" %)
278 +(((
276 276  Note – The allow charging contactor closes under two independent conditions: 1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and 2) the "Delay before recharging" time has passed since the opening of the allow charging contactor.
280 +)))
277 277  
278 278  === Discharge ===
279 279  
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354 354  
355 355  [[image:1733746901779-991.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="95" width="800"]]In this section:
356 356  
357 -
358 358  * Enable – a flag to enable the charge/discharge controller.
359 359  
360 360  === Discharge (AUX) ===
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