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Changes for page 3.5 Battery control

Last modified by Admin on 2025/06/11 15:20
From version 24.1
edited by Admin
on 2025/02/19 10:43
Change comment: There is no comment for this version
To version 26.4
edited by Admin
on 2025/06/11 15:18
Change comment: There is no comment for this version

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4 4  (% data-numbered-headings-start="5" style="--numbered-headings-start: 4;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
5 5  == Battery control ==
6 6  
7 -=== Charge control ===
7 +=== Charging control ===
8 8  
9 9  There are two relays that serve charging the battery: a charging relay and an allow charging relay. With the help of the allow charging relay, the BMS commands the charger to start or stop charging.
10 10  
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74 74  2) the "Delay before recharging" time has passed since the opening of the allow charging relay.
75 75  )))
76 76  
77 -=== Discharge control ===
77 +=== Discharging control ===
78 78  
79 79  The board has a discharging relay to connect battery to the load.
80 80  
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117 117  
118 118  To change the parameters of the battery discharge control algorithm, select the menu "Cells → Discharging control":
119 119  
120 -[[image:1739961703149-845.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="748" width="440"]]
120 +[[image:1749654838818-400.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="828" width="446"]]
121 121  
122 122  In this section:
123 123  
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133 133  * Delay before stopping discharging – a time delay T,,off,, before opening the discharging relay, second;
134 134  * Use specific delays before stopping discharging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
135 135  * Switch off the discharging relay on errors without delay – a flag to protectively open the discharging relay without delay. In the opposite case, when an error is detected, the discharging relay opens always with the delay “Delay before stopping discharging”.
136 +* Control the precharging relay – a flag to enable precharge at discharging;
137 +* Delay before current measurement, millisecond;
136 136  * Precharge time – a duration of closing the precharge relay before closing the discharging relay, millisecond;
137 137  * Precharge current threshold to start discharging – a minimum current value to finish precharging and start discharge, A;
140 +* Keep the precharging relay closed until precharge is finished
138 138  * Voltage to clear the “Ready to discharge” signal – a threshold U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
139 -* Voltage to reset the “Ready to discharge” signal – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set.
142 +* Voltage to reset the “Ready to discharge” signal – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set;
143 +* Treat negative currents as zero currents for generating the "Ready to charge" signal – a flag to disable voltage correction for "Ready to charge" signal at discharging current;
140 140  
141 141  === Discharging (AUX) control ===
142 142  
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170 170  
171 171  === Charging/Discharging control ===
172 172  
173 - BMS Main 2.x allows to control charging/discharging contactor that combines algorithms of charging and discharging contactor. It behaves as charging contactor when «Charge request» or «Charger connected» are set, otherwise – as discharging contactor.
177 + BMS Main 2.x allows to control charging/discharging contactor that combines algorithms of charging and discharging contactor. It behaves as [[charging>>doc:||anchor="HChargingcontrol"]] contactor when «Charge request» or «Charger connected» are set, otherwise – as [[discharging>>doc:||anchor="HDischargingcontrol"]] contactor.
174 174  
175 175  To change the parameters of the charging/discharging algorithm, select the menu "Cells → Charging/Discharging control":
176 176  
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