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Changes for page 3.5 Battery control

Last modified by Admin on 2025/03/10 12:50
From version 4.2
edited by Admin
on 2024/11/21 17:09
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To version 9.5
edited by Admin
on 2024/11/29 12:36
Change comment: Update document after refactoring.

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1 -drafts.bms-main-2-1.configuration.WebHome
1 +drafts.BMS Main 2\.1.3\. Configuration.WebHome
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40 40  
41 41  To change the parameters of the battery charge control algorithm, select the menu "Cells → Charging control":
42 42  
43 -[[Charge control settings>>image:1732208589628-419.png||data-xwiki-image-style-alignment="center" height="725" width="471"]]
43 +[[image:1732208589628-419.png||data-xwiki-image-style-alignment="center" height="725" width="471"]]
44 44  
45 45  In this section:
46 46  
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110 110  
111 111  To change the parameters of the battery discharge control algorithm, select the menu "Cells → Discharging control":
112 112  
113 -[[Discharge control settings>>image:1732208781932-849.png||data-xwiki-image-style-alignment="center" height="644" width="415"]]
113 +[[image:1732208781932-849.png||data-xwiki-image-style-alignment="center" height="644" width="415"]]
114 114  
115 115  
116 116  In this section:
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144 144  
145 145  To change the parameters of the powering of external equipment, select the menu "Cells → Discharging (AUX) control":
146 146  
147 -[[Caption>>image:1732208939544-710.png||data-xwiki-image-style-alignment="center" height="397" width="445"]]
147 +[[image:1732208939544-710.png||data-xwiki-image-style-alignment="center" height="397" width="445"]]
148 +
149 +In this section:
150 +
151 +* Enable – a flag to activate the auxiliary discharge control;
152 +* Switch off the discharging (AUX) relay at low SOC:
153 +** Minimum SOC – a minimum SOC value, when reached, the auxiliary (AUX) discharging relay opens, %;
154 +** Tolerant SOC – a permissive SOC value, upon reaching which the auxiliary (AUX) discharging relay re-closes, %;
155 +* Switch off the discharging (AUX) relay if the battery voltage is out of the range:
156 +** Minimum voltage – minimum battery voltage, V;
157 +** Maximum voltage – maximum battery voltage, V;
158 +* Switch off the discharging (AUX) relay on errors – the auxiliary (AUX) discharging relay opens if the following errors occur: Undervoltage, Overcurrent, High temperature (discharging), Short circuit, Critical error.
159 +
160 +== 3.5.4 Charging/Discharging control ==
161 +
162 + 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.
163 +
164 +To change the parameters of the charging/discharging algorithm, select the menu "Cells → Charging/Discharging control":
165 +
166 +[[image:1732209044117-558.png||data-xwiki-image-style-alignment="center" height="102" width="259"]]
167 +
168 +
169 +In this section:
170 +
171 +* Enable – a flag to enable Charging/Discharging contactor controller.
172 +
173 +== 3.5.5 Main contactor ==
174 +
175 +The BMS Main 2.x has a relay to control the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in a case of sealing of the charging or discharging contactor.
176 +
177 +The main contactor closes if there are no errors from the list below:
178 +
179 +* Overcurrent;
180 +* Undervoltage;
181 +* Overvoltage;
182 +* High temperature (charging);
183 +* High temperature (discharging);
184 +* Unallowable charging;
185 +* Critical error.
186 +
187 +The main contactor opens if the charging and discharging relays are opened and any of the following conditions is met:
188 +
189 +* charging or discharging current is detected during a set time;
190 +* voltage of any cell is lower than the minimum cell voltage configured in the section "Protections → Undervoltage protection" during a set time;
191 +* voltage of any cell is greater than the maximum cell voltage configured in the section "Protections → Overvoltage protection" during a set time;
192 +* temperature of any cell is greater than the maximum cell temperature configured in the section "Protections → High temperature protection" during a set time;
193 +* Critical error stays on during a set time.
194 +
195 +To change the parameters of the main contactor, select the menu "Cells → Main contactor":
196 +
197 +[[image:1732209137414-912.png||data-xwiki-image-style-alignment="center" height="132" width="352"]]
198 +
199 +
200 +In this section:
201 +
202 +* Enable – a flag to enable the main contactor control;
203 +* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, second;
204 +* Keep the contactor open until the device is reset – a flag for keeping the main contactor opened until the system be reset.
205 +
206 +== 3.5.6 Power down control ==
207 +
208 +The BMS Main 2.x can command the BMS Power Control board to shut down the battery system if the battery voltage is low or the battery is idle for a long time. The BMS Main 2.x interacts with the BMS Power Control using the “Power down request” and the “Acknowledgement of power down” discrete signals.
209 +
210 +Shutting down the battery system is performed according to the following conditions:
211 +
212 +* the battery voltage is below the minimum level;
213 +* the “Charger connected” signal is cleared for 60 seconds.
214 +
215 +The BMS Main 2.x also shuts down the battery if it stays in the “Charging OFF”, “Discharging OFF”, “Relaxed (after charging)” or “Relaxed (after discharging)” for the set time.
216 +
217 +To change the parameters of the power down control, select the menu "Cells → Power down control":
218 +
219 +[[image:1732211675123-235.png||data-xwiki-image-style-alignment="center" height="198" width="402"]]
220 +
221 +
222 +In this section:
223 +
224 +* Enable – a flag to enable the power down control;
225 +* Minimum voltage – a minimum voltage level of the battery below which the BMS commands to shut down the battery, V;
226 +* Idle time – a time of battery inactivity after which the battery is shut down, second;
227 +* Wait the "Power up/down request" signal is cleared (on startup) – a flag to enable delay for clearing the “Power up/down request” signal while starting the BMS.
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