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Changes for page 3.3 Control

Last modified by Admin on 2025/06/11 15:52
From version 8.2
edited by Admin
on 2025/02/28 13:37
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To version 10.2
edited by Admin
on 2025/02/28 13:42
Change comment: There is no comment for this version

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101 101  
102 102  To change the parameters for generating status signals when discharging the battery, select the section “Control → Discharging status”:
103 103  
104 -[[image:1740749862820-455.png]]
104 +[[image:1740749862820-455.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="95" width="800"]]In this section:
105 105  
106 +* Current corresponding to discharging – a current level to set the "Discharging current present" signal, A;
107 +* Current corresponding to no discharging – a current level to clear the "Discharging current present" signal, A.
108 +
109 +=== Precharge ===
110 +
111 +To change the precharge parameters, select the section “Control → Precharge”:
112 +
113 +[[image:1740749922669-238.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="165" width="800"]]
114 +
115 +In this section:
116 +
117 +* Precharge current threshold to close the discharging contactor – a current value to ensure that precharge process has finished and it is allowed to close the discharging contactor, A;
118 +* Number of precharging attempts – maximum number of precharging attempts before setting the "Precharge error";
119 +* Delay before current measurement – a delay before first current measurement after closing precharge, millisecond;
120 +* Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
121 +* Relaxation between attempts – a duration between precharge attempts, millisecond;
122 +* Check the power dissipated in the preacharge resistor - a flag to enable the calculation of power dissipated in precharge resistor;
123 +* Precharge resistor resistance, Ohm;
124 +* Maximum allowable power dissipated in the resistor, W;
125 +* Delay before setting the "Precharge error" when checking power, millisecond;
126 +* Delay before clearing the "Precharge error", second;
127 +* Lock – a flag to block the error until the device is restarted.
128 +
129 +“Precharge error” generation conditions if any of the following is true:
130 +
131 +* the precharge current does not decrease during the "Precharge time" after "Number of precharging attempts";
132 +* voltages before and after contactors are not equal during the "Precharge time" after "Number of precharging attempts";
133 +* power dissipated on the precharge resistor is above the maximum value during the “Delay before setting the 'Precharge error' when checking power” time.
134 +
135 +(% class="box warningmessage" %)
136 +(((
137 +Behavior of contactors at “Precharge error” is configured in corresponding contactor settings!
138 +)))
139 +
106 106  === Charge ===
107 107  
108 108  The BMS Main X device manages the parallel connection of the battery modules and the connection of the battery to the charging circuit.
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113 113  1. Charging is allowed provided that all battery modules are balanced (Balanced).
114 114  1. Charging is allowed for most balanced battery modules (Partially balanced). Unbalanced modules are disconnected from the common bus and do not participate in the charging.
115 115  
116 -The device controls two processes: joining battery modules and closing the main charging contactor.
150 +The device controls two processes: **joining battery modules **and **closing the main charging contactor.**
117 117  
118 118  
119 -The operation of the joining battery modules is described by the following steps:
153 +The operation of the **joining battery modules** is described by the following steps:
120 120  
121 121  1. Battery modules are disabled. When the “Join to charge” request is received and the voltage and current unbalance errors (Voltage unbalance (CH), Current unbalance (CH), Charging current unbalance) are cleared, go to step 2.
122 122  1. Checking the voltage unbalance of battery modules (the duration of the check is set in the settings). If there is no imbalance or errors are ignored (“Always on” and “Partially balanced”), go to step 3, otherwise open all charging contactors, and go to step 1.
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125 125  1. Checking intermodular balancing currents (the duration of the check is set in the settings). If there is no current unbalance (“Current unbalance (CH)”) or errors are ignored (“Always on”), go to step 6, otherwise open all charging contactors, and go to step 1.
126 126  1. The battery modules are joined. If the “Join to charge” request is cleared or the "Charging current unbalance" and "Critical error" errors occur, go to step 1.
127 127  
128 -The operation of the main charging contactor is described in the following steps:
162 +The operation of **closing the main charging contactor** is described in the following steps:
129 129  
130 130  1. The main charging contactor is open. When the “Charge request” is received, the voltage and current unbalance errors (“Voltage unbalance (CH)”, “Current unbalance (CH)”, “Charging current unbalance”) are cleared, and the battery modules are joined, go to step 2.
131 131  1. Closing the main precharging contactor (optional). Go to step 3.
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134 134  
135 135  The command to turn on the main charging contactor (“Charging”) can be issued both to the upper-level system via the CAN bus (external), and on the opto-relay of the device that serves to directly control the main charging contactor.
136 136  
137 -
138 138  In addition to controlling the charging contactors, the charge controller calculates and transmits to the upper-level system the value of the maximum allowable current, which can be used to charge the modular battery (“Charge current limit”). The calculation of the charging current of the entire battery is performed based on the number of battery modules operating per charge and the values of the current limits transmitted by them.
139 139  
140 -
141 141  The battery charge management is configured in the "Control - Charge" section:
142 142  
143 -[[image:1734356553573-447.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="146" width="600"]]
175 +[[image:1740750130950-113.png]]
144 144  
145 145  In this section:
146 146  
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