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Changes for page 3.5 Battery control

Last modified by Admin on 2025/03/10 12:50
From version 9.5
edited by Admin
on 2024/11/29 12:36
Change comment: Update document after refactoring.
To version 11.4
edited by Admin
on 2025/01/11 19:02
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1 -drafts.BMS Main 2\.1.3\. Configuration.WebHome
1 +Battery management systems.BMS Main 2\.1.3\. Configuration.WebHome
Content
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1 -== 3.5.1 Charge control ==
1 +(% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
2 += Configuration =
2 2  
4 +(% data-numbered-headings-start="5" style="--numbered-headings-start: 4;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
5 +== Battery control ==
6 +
7 +=== Charge control ===
8 +
3 3  There are two relays that serve charging the battery: a charging relay and an allow charging relay. With the help of the allow charging relay, the BMS commands the charger to start or stop charging.
4 4  
5 5  The board supports two charge control algorithms:
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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 -[[image:1732208589628-419.png||data-xwiki-image-style-alignment="center" height="725" width="471"]]
49 +[[image:1732208589628-419.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="725" width="471"]]
44 44  
45 45  In this section:
46 46  
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67 67  2) the "Delay before recharging" time has passed since the opening of the allow charging relay.
68 68  )))
69 69  
70 -== 3.5.2 Discharge control ==
76 +=== Discharge control ===
71 71  
72 72  The board has a discharging relay to connect battery to the load.
73 73  
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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 -[[image:1732208781932-849.png||data-xwiki-image-style-alignment="center" height="644" width="415"]]
119 +[[image:1732208781932-849.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="644" width="415"]]
114 114  
115 -
116 116  In this section:
117 117  
118 118  * Enable – a flag to activate the discharge control;
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127 127  * Use specific delays before stopping discharging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
128 128  * Switch off the discharging relay on errors without delay – a flag to protectively open the discharging relay without delay. In the opposite case, when an error is detected, the discharging relay opens always with the delay “Delay before stopping discharging”.
129 129  * Precharge time – a duration of closing the precharge relay before closing the discharging relay, millisecond;
135 +* Precharge current threshold to start discharging – a minimum current value to finish precharging and start discharge, A;
130 130  * Voltage to clear the “Ready to discharge” signal – a threshold voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared;
131 131  * Voltage to reset the “Ready to discharge” signal – a tolerant voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set.
132 132  
133 -== 3.5.3 Discharging (AUX) control ==
139 +=== Discharging (AUX) control ===
134 134  
135 135  The BMS Main 2.x board can control the power supply of external equipment using the auxiliary (AUX) discharging relay. An example of external equipment can be an inverter that converts DC to AC to power a service laptop and other devices.
136 136  
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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 -[[image:1732208939544-710.png||data-xwiki-image-style-alignment="center" height="397" width="445"]]
153 +[[image:1732208939544-710.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="397" width="445"]]
148 148  
149 149  In this section:
150 150  
151 151  * Enable – a flag to activate the auxiliary discharge control;
152 -* Switch off the discharging (AUX) relay at low SOC:
158 +* Switch off the discharging (AUX) relay at when the battery SOC is low:
153 153  ** Minimum SOC – a minimum SOC value, when reached, the auxiliary (AUX) discharging relay opens, %;
154 154  ** Tolerant SOC – a permissive SOC value, upon reaching which the auxiliary (AUX) discharging relay re-closes, %;
161 +* Switch off the discharging (AUX) relay when the cell voltage is low:
162 +** Minimum cell voltage – a minimum SOC value, when reached, the auxiliary (AUX) discharging relay opens, %;
163 +** Tolerant SOC – a permissive SOC value, upon reaching which the auxiliary (AUX) discharging relay re-closes, %;
155 155  * Switch off the discharging (AUX) relay if the battery voltage is out of the range:
156 156  ** Minimum voltage – minimum battery voltage, V;
157 157  ** Maximum voltage – maximum battery voltage, V;
158 158  * 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.
159 159  
160 -== 3.5.4 Charging/Discharging control ==
169 +=== Charging/Discharging control ===
161 161  
162 162   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.
163 163  
164 164  To change the parameters of the charging/discharging algorithm, select the menu "Cells → Charging/Discharging control":
165 165  
166 -[[image:1732209044117-558.png||data-xwiki-image-style-alignment="center" height="102" width="259"]]
175 +[[image:1732209044117-558.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="259"]]
167 167  
168 -
169 169  In this section:
170 170  
171 171  * Enable – a flag to enable Charging/Discharging contactor controller.
172 172  
173 -== 3.5.5 Main contactor ==
181 +=== Main contactor ===
174 174  
175 175  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.
176 176  
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194 194  
195 195  To change the parameters of the main contactor, select the menu "Cells → Main contactor":
196 196  
197 -[[image:1732209137414-912.png||data-xwiki-image-style-alignment="center" height="132" width="352"]]
205 +[[image:1732209137414-912.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="132" width="352"]]
198 198  
199 -
200 200  In this section:
201 201  
202 202  * Enable – a flag to enable the main contactor control;
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203 203  * Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, second;
204 204  * Keep the contactor open until the device is reset – a flag for keeping the main contactor opened until the system be reset.
205 205  
206 -== 3.5.6 Power down control ==
213 +=== Power down control ===
207 207  
208 208  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.
209 209  
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216 216  
217 217  To change the parameters of the power down control, select the menu "Cells → Power down control":
218 218  
219 -[[image:1732211675123-235.png||data-xwiki-image-style-alignment="center" height="198" width="402"]]
226 +[[image:1732211675123-235.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="198" width="402"]]
220 220  
221 -
222 222  In this section:
223 223  
224 224  * Enable – a flag to enable the power down control;