Changes for page 3.3 Control
Last modified by Admin on 2025/06/11 15:52
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... ... @@ -231,6 +231,7 @@ 231 231 232 232 The battery discharge management is configured in the "Control - Discharge" section: 233 233 234 +[[image:1740750247231-926.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="218" width="800"]] 234 234 235 235 In this section: 236 236 ... ... @@ -239,28 +239,47 @@ 239 239 ** Always on – discharging is always allowed; 240 240 ** Balanced – discharging is allowed provided that all battery modules are balanced; 241 241 ** Partially balanced – discharging is allowed for most balanced battery modules; 242 -* Current corresponding to discharging – a current level to set the "Discharging current present" signal, A; 243 -* Current corresponding to no discharging – a current level to clear the "Discharging current present" signal, A; 244 -* Maximum current to rejoin modules – a maximum allowable current at which rejoining of battery modules is allowed, A; 245 -* Checking voltages time – a time of checking voltages of battery modules, ms; 246 -* Pre-balancing modules time – a time of precharging battery modules, ms; 247 -* Balancing modules time – a time of balancing battery modules, ms; 248 -* Control the precharging relay – a flag to control the main precharging contactor; 249 -* Precharging time – a time of precharging, ms; 250 -* Cancel discharging without a delay; 251 -* Canceling discharging time – a delay before opening the main discharging contactor, ms; 252 -* 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; 253 -* Slew rate – a rate of change of the discharge current limit when the “Limit module current” flag is set, А/s; 254 -* Disconnect modules not ready to discharge – a flag for disconnecting modules that have the “Ready to discharge” signal cleared. 243 +* Minimum number of modules allowed to join – a minimum number of battery modules that can be connected in parallel; 244 +* Allowable battery current to rejoin modules – a battery current at which joining of battery modules is permitted, A; 245 +* 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; 246 +* Checking voltages time – a time of checking voltages of battery modules before starting joining modules, millisecond; 247 +* Balancing modules time – a time of balancing battery modules after joining modules and before closing main discharging contactor, millisecond; 248 +* Control the precharging contactor – a flag to control the main precharging contactor; 249 +* Canceling discharging time – a delay before opening the main discharging contactor, millisecond; 250 +* Disconnect modules that are not ready to discharge – a flag for disconnecting modules that have the “Ready to discharge” signal cleared. 251 +* 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; 252 +* Join modules on the “Discharge request” signal – a flag to enable automatic modules joining if “Discharge request” signal appears; 253 +* Maximum discharge current limit – a maximum allowed discharging current of all the battery, A; 254 +* Errors to disconnect all battery modules – errors that cause all battery modules to be disconnected from the common bus; 255 +* Errors to open the discharging contactor – errors that cause the main discharging contactor "Discharging" to open, 256 +* Switch of the discharging contactor on errors without a delay – a flag that allows the main discharging contactor “Discharging” to be opened without delay if errors are detected. 255 255 256 256 === Charge/Discharge === 257 257 258 258 The BMS Main X can control the charging/discharging contactor that is used to both charge and discharge the battery. 259 259 260 - The charge/discharge contactor(“Charging/Discharging”signal)receivesa“Charging” signal(generated by the charge controller)if a “Charge request” signal is received from the upper-level system. In all other cases,the "Discharging" signal isoutputtothecontactor(generated by the discharge controller).262 +Charge/Discharge contactor has two algorithms of operation: 261 261 262 -The charge/discharge contactor control is configured in the “Control – Charge/Discharge” section: 264 +* Dependent - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if "Charging" signal is set, otherwise – as Discharging contactor; 265 +* Independent - Charge/Discharge contactor is based on its own controller. 263 263 267 +(% class="box warningmessage" %) 268 +((( 269 +**Warning!** 270 +Charge/Discharge algorithms on BMS Main X and on battery modules controllers must **be the same**! 271 +))) 272 + 273 +The charging/discharging controller supports the following modes: 274 + 275 +1. Charging/Discharging is always allowed (Always on) – the device ignores voltage and current unbalance of the battery modules and commands to close the discharging contactors of the battery modules and the main discharging contactor. 276 +1. Charging/Discharging is allowed if all battery modules are balanced (Balanced). 277 +1. Charging/Discharging is allowed for most balanced battery modules (Partially balanced). Unbalanced modules are disconnected from the common bus and do not participate in the discharging. 278 + 279 +The device controls two processes: **joining battery modules** and **closing the main charging/discharging contactor**. 280 + 281 + 282 + 283 + 264 264 [[image:1734356572312-596.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="58" width="600"]] 265 265 266 266 In this section: