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Changes for page 3.5 Battery control

Last modified by Admin on 2025/06/11 15:20
From version 26.4
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To version 21.1
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on 2025/02/19 10:39
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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 -=== Charging control ===
7 +=== Charge 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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46 46  
47 47  To change the parameters of the battery charge control algorithm, select the menu "Cells → Charging control":
48 48  
49 -[[image:1739961593607-309.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="639" width="425"]]
49 +[[image:1732208589628-419.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="725" width="471"]]
50 50  
51 51  In this section:
52 52  
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55 55  ** Always on – charging is always allowed;
56 56  ** On charger connected – charging is allowed when there is a signal “Charger connected”;
57 57  ** On charge request – charging is allowed when there is a signal “Charge request”;
58 -* Allow charging only when the "Ready to charge" signal is set;
59 59  * Current indicating charging – a current level to generate the "Charging current present" signal, A;
60 60  * Current indicating no charging – a current level to clear the "Charging current present" signal, A;
61 61  * Delay before starting charging – a time delay T,,on,, before closing the charging relay and the allow charging relay, second;
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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 -=== Discharging control ===
76 +=== Discharge 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:1749654838818-400.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="828" width="446"]]
119 +[[image:1732208781932-849.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="644" width="415"]]
121 121  
122 122  In this section:
123 123  
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126 126  ** Always on – load is always connected;
127 127  ** On charger disconnected – load is connected when there is no signal “Charger connected”;
128 128  ** On discharge request – load is connected when there is a signal “Discharge request”;
129 -* Allow discharging only when the "Ready to discharge" signal is set;
130 130  * Current indicating discharging – a current level to generate the "Discharging current present" signal, А;
131 131  * Current indicating no discharging – a current level to clear the "Discharging current present" signal, А;
132 132  * Delay before starting discharging – a time delay T,,on,, before closing the discharging relay, second;
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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;
138 138  * Precharge time – a duration of closing the precharge relay before closing the discharging relay, millisecond;
139 139  * 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
141 141  * 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;
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;
137 +* 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.
144 144  
145 145  === Discharging (AUX) control ===
146 146  
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174 174  
175 175  === Charging/Discharging control ===
176 176  
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.
171 + 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.
178 178  
179 179  To change the parameters of the charging/discharging algorithm, select the menu "Cells → Charging/Discharging control":
180 180  
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