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Changes for page 3.4 Battery parameters

Last modified by Admin on 2025/04/09 12:04
From version 25.1
edited by Admin
on 2024/12/11 10:29
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To version 30.1
edited by Admin
on 2025/02/17 17:30
Change comment: There is no comment for this version

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1 -drafts.BMS Main 2\.1.3\. Configuration.WebHome
1 +Battery management systems.BMS Main 2\.1.3\. Configuration.WebHome
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121 121  * the voltage on the cell is higher than the starting voltage of the balancing;
122 122  * the difference between the cell voltage and the minimum voltage among the cells of the battery is greater than the balancing threshold.
123 123  
124 -If the BMS Logic board overheats, then the balancing of the cells connected to this board will not be performed (see [[Logic high temperature protection>>doc:drafts.BMS Main 2\.1.3\. Configuration.3\.6 Battery protection.WebHome||anchor="HLogichightemperatureprotection"]]).
124 +A balancing resistor is disconnected from the cell if any of the following conditions are met:
125 125  
126 +* the voltage on the cell is less than the balancing stop voltage;
127 +* the difference between the voltage on the cell and the minimum voltage among the battery cells is less than the balancing stop threshold.
128 +
129 +If the BMS Logic board overheats, then the balancing of the cells connected to this board will not be performed (see [[Logic high temperature protection>>doc:Battery management systems.BMS Main 2\.1.3\. Configuration.3\.6 Battery protection.WebHome||anchor="HLogichightemperatureprotection"]]).
130 +
131 +The BMS Main 2.1 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.
132 +
133 +BMS Main 2.1 can force a cell balancing, if its voltage is higher than estimated value.
134 +
126 126  To change the cell balancing parameters, select the menu "Cell → Cell balancing":
127 127  
128 -[[image:1732207485773-804.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="264" width="387"]]
137 +[[image:1739812799920-892.png||alt="1732207485773-804.png" data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="264" width="387"]]
129 129  
130 130  In this section:
131 131  
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137 137  ** Charging;
138 138  ** Charging or relaxed;
139 139  ** Always (regardless of battery state);
149 +* Balancing condition:
150 +** Automatic – balancing will be performed automatically if needed conditions are met;
151 +** On balancing request – balancing will start only if a remote request is received. In this case cells will start to balance regardless the "Voltage deviation to start balancing" value;
140 140  * Minimum cell voltage to start balancing, V;
141 -* Balancing threshold, V;
153 +* Deviation to start balancing;
154 +* Deviation to stop balancing;
155 +* Voltage for forced balancing – if cell voltage is above this value, it will start discharging through balancing resistor;
142 142  * Start cell discharging – a command to start forced balancing of all battery cells (used for service purposes);
143 143  * Stop cell discharging – a command to stop forced balancing of all battery cells (used for service purposes).
144 144  
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146 146  
147 147  The BMS Main 2.x board supports work with two independent (galvanically unrelated) cell series. To monitor the status of two series, two current sensors are used: primary and secondary (AUX). A series of cells must be equivalent: they must have the same number of cells and the same capacity.
148 148  
149 -Since the series of cells can operate at different loads, they must be balanced. For this, the BMS Main 2.x provides two relays: “Balancing series 1” and “Balancing series 2” (see [[Input and output signals>>doc:drafts.BMS Main 2\.1.3\. Configuration.3\.3 Input and output signals.WebHome]]), as well as a combined algorithm that considers both the voltage of each series and the charge that these series gave load. “Balancing series 1” and “Balancing series 2” relays are used to connect high-power balancing resistors in parallel with cells series 1 and 2.
163 +Since the series of cells can operate at different loads, they must be balanced. For this, the BMS Main 2.x provides two relays: “Balancing series 1” and “Balancing series 2” (see [[Input and output signals>>doc:Battery management systems.BMS Main 2\.1.3\. Configuration.3\.3 Input and output signals.WebHome]]), as well as a combined algorithm that considers both the voltage of each series and the charge that these series gave load. “Balancing series 1” and “Balancing series 2” relays are used to connect high-power balancing resistors in parallel with cells series 1 and 2.
150 150  
151 151  When charging the battery, balancing is performed based on the voltage of the series. A balancing resistor is connected to the cell series if:
152 152  
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