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Changes for page 3.3 Control

Last modified by Admin on 2025/05/30 16:50
From version 7.1
edited by Admin
on 2025/01/28 16:12
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To version 12.8
edited by Admin
on 2025/02/11 16:21
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26 26  
27 27  Each module in a battery must have a unique address. You can change the address in the battery module settings in the “Connectivity → CAN” section of the BMS Main 3 settings.
28 28  
29 -You can set up maximum number of found modules to finish initialization in corresponding section.
29 +In corresponding section you can set up maximum number of found modules to finish initialization.
30 30  
31 31  === Calculation of battery parameters ===
32 32  
... ... @@ -40,8 +40,8 @@
40 40  
41 41  * Minimal SOC – SOC of the modular battery is assumed to be the minimum SOC among the battery modules;
42 42  * Average SOC – SOC of the modular battery is taken equal to the arithmetic average of the SOC of the battery modules;
43 -* Min-Max SOC – SOC of the modular battery is calculated based on the minimal and maximum SOC of the battery modules (optimized for maximum health);
44 -* Max-Min SOC – SOC of the modular battery is calculated based on the minimal and maximum SOC of the battery modules (optimized for maximum capacity, recommended);
43 +* Min-Max SOC – the battery SOC is calculated based on the minimum and maximum SOC of the modules. Final SOC will be a) 100% if any module has 100% SOC, b) 0% if any module has 0% SOC;
44 +* Max-Min SOC – the battery SOC is calculated based on the minimum and maximum SOC of the modules. Final SOC will be a) 100% if all modules have 100% SOC, b) 0% if all modules have 0% SOC;
45 45  
46 46  Calculation of the battery state of health (SOH) is configured in the "Control → Calculation → Final SOH" section. The following battery SOH calculation methods are supported:
47 47  
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110 110  
111 111  To change the precharge parameters, select the section “Control → Precharge”:
112 112  
113 -[[image:1734089664376-736.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="56" width="600"]]
114 -
115 115  In this section:
116 116  
115 +[[image:1739290619354-792.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="117" width="600"]]
116 +
117 117  * 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;
118 118  * Check voltages before and after contactors to finish precharging – a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor;
119 -* Minimum voltage difference before and after contactors to finish precharging – a minimum voltage difference before and after contactors to ensure precharge process finished, V.
119 +* Minimum voltage difference before and after contactors to finish precharging – a minimum voltage difference before and after contactors to ensure precharge process finished, V;
120 +* Number of precharging attempts – maximum number of precharging attempts before setting the "Precharge error";
121 +* Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
122 +* Relaxation between attempts – a duration between precharge attempts, millisecond;
123 +* Check the power dissipated in the preacharge resistor - a flag to enable the calculation of power dissipated in precharge resistor;
124 +* Precharge resistor resistance, Ohm;
125 +* Maximum allowable power dissipated in the resistor, W;
126 +* Delay before setting the "Precharge error" when checking power, millisecond;
127 +* Delay before clearing the "Precharge error", second;
128 +* Lock – a flag to block the error until the device is restarted.
120 120  
130 +“Precharge error” generation conditions if any of the following is true:
131 +
132 +* the precharge current does not decrease during the "Precharge time" after "Number of precharging attempts";
133 +* voltages before and after contactors are not equal during the "Precharge time" after "Number of precharging attempts";
134 +* power dissipated on the precharge resistor is above the maximum value during the “Delay before setting the 'Precharge error' when checking power” time.
135 +
136 +(% class="box warningmessage" %)
137 +(((
138 +Behavior of contactors at “Precharge error” is configured in corresponding contactor settings!
139 +)))
140 +
121 121  === Charge ===
122 122  
123 123  The BMS Main 3X device manages the parallel connection of the battery modules and the connection of the battery to the charging circuit.
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155 155  
156 156  The battery charge management is configured in the "Control → Charge" section:
157 157  
158 -[[image:1734089684907-463.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="180" width="600"]]
178 +[[image:1738081025199-282.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="600"]]
159 159  
160 160  In this section:
161 161  
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167 167  * Minimum number of modules allowed to join – a minimum number of battery modules that can be connected in parallel;
168 168  * Allowable battery current to rejoin modules – a battery current at which joining of battery modules is permitted, A;
169 169  * Allowable voltage difference to rejoin modules – a difference between the voltage of the disconnected module and the battery voltage at which its joining is permitted, V;
170 -* Checking voltages time – a time of checking voltages of battery modules, millisecond;
171 -* Pre-balancing modules time – a time of pre-charging battery modules, millisecond;
172 -* Balancing modules time – a time of balancing battery modules, millisecond;
173 -* Control the precharging contactor – a flag to control the main precharging contactor;
174 -* Precharging time – a time of precharging, millisecond;
175 -* Canceling charging time – a delay before opening the main charging contactor, ms;
176 -* Limit module current – a flag that allows to limit the charging current of a modular battery so that the current of each battery module does not exceed its maximum allowable charge current;
177 -* Slew rate – a rate of change of the charge current limit when the “Limit module current” flag is set, A/s;
190 +* Checking voltages time – a time of checking voltages of battery modules before starting joining modules, millisecond;
191 +* Balancing modules time – a time of balancing battery modules after j, millisecond;
192 +* Control the precharging contactor – a flag to control the precharging contactor;
193 +* Canceling charging time – a delay before opening the charging contactor, ms;
178 178  * Disconnect modules that are not ready to charge – a flag for disconnecting modules that have the “Ready to charge” signal cleared.
179 179  * Disconnect all modules if one is not ready to charge – a flag for disconnecting all modules if any of the modules have the “Ready to charge” signal cleared;
180 180  * Join modules on the “Charge request” signal – a flag to enable automatic modules joining if “Charge request” signal appears;
197 +* Maximum CONTINUOUS charge current limit – a maximum continuous allowed charging current of all battery, A;
181 181  * Maximum charge current limit – a maximum allowed charging current of all battery, A;
182 182  * Errors 1 (2) to disconnect all battery modules – errors that cause all battery modules to be disconnected from the common bus;
183 183  * Errors 1 (2) to open the charging contactor – errors that cause the main charging contactor "Charging" to open;
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220 220  
221 221  The battery discharge management is configured in the "Control → Discharge" section:
222 222  
223 -[[image:1734089702987-534.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="179" width="600"]]
240 +[[image:1738081173083-894.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="600"]]
224 224  
225 225  In this section:
226 226  
... ... @@ -233,16 +233,13 @@
233 233  * Allowable battery current to rejoin modules – a battery current at which joining of battery modules is permitted, A;
234 234  * Allowable voltage difference to rejoin modules – a difference between the voltage of the disconnected module and the battery voltage at which its joining is permitted, V;
235 235  * Checking voltages time – a time of checking voltages of battery modules, millisecond;
236 -* Pre-balancing modules time – a time of precharging battery modules, millisecond;
237 237  * Balancing modules time – a time of balancing battery modules, millisecond;
238 238  * Control the precharging contactor – a flag to control the main precharging contactor;
239 -* Precharging time – a time of precharging, millisecond;
240 240  * Canceling discharging time – a delay before opening the main discharging contactor, millisecond;
241 -* Limit module current – a flag that allows to limit the discharging current of a modular battery so that the current of each battery module does not exceed its maximum allowable discharge current;
242 -* Slew rate – a rate of change of the discharge current limit when the “Limit module current” flag is set, A/s;
243 243  * Disconnect modules that are not ready to discharge – a flag for disconnecting modules that have the “Ready to discharge” signal cleared.
244 244  * Disconnect all modules if one is not ready to discharge – a flag for disconnecting all modules if one of the modules have the “Ready to discharge” signal cleared;
245 245  * Join modules on the “Discharge request” signal – a flag to enable automatic modules joining if “Discharge request” signal appears;
259 +* Maximum CONTINUOUS discharge current limit – a maximum allowed continuous discharging current of all the battery, A;
246 246  * Maximum discharge current limit – a maximum allowed discharging current of all the battery, A;
247 247  * Errors 1 (2) to disconnect all battery modules – errors that cause all battery modules to be disconnected from the common bus;
248 248  * Errors 1 (2) to open the discharging contactor – errors that cause the main discharging contactor "Discharging" to open,
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