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Changes for page 3.5 Battery control

Last modified by Admin on 2025/03/10 12:50
From version 15.1
edited by Admin
on 2025/01/30 12:44
Change comment: There is no comment for this version
To version 10.1
edited by Admin
on 2024/12/02 15:48
Change comment: There is no comment for this version

Summary

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1 -Battery management systems.BMS Main 2\.1.3\. Configuration.WebHome
1 +drafts.BMS Main 2\.1.3\. Configuration.WebHome
Content
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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 =
1 +== 3.5.1 Charge control ==
3 3  
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 -
9 9  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.
10 10  
11 11  The board supports two charge control algorithms:
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73 73  2) the "Delay before recharging" time has passed since the opening of the allow charging relay.
74 74  )))
75 75  
76 -=== Discharge control ===
70 +== 3.5.2 Discharge control ==
77 77  
78 78  The board has a discharging relay to connect battery to the load.
79 79  
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132 132  * Use specific delays before stopping discharging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors;
133 133  * 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”.
134 134  * 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;
136 136  * 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;
137 137  * 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.
138 138  
139 -=== Discharging (AUX) control ===
132 +== 3.5.3 Discharging (AUX) control ==
140 140  
141 141  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.
142 142  
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155 155  In this section:
156 156  
157 157  * Enable – a flag to activate the auxiliary discharge control;
158 -* Switch off the discharging (AUX) relay at when the battery SOC is low:
151 +* Switch off the discharging (AUX) relay at low SOC:
159 159  ** Minimum SOC – a minimum SOC value, when reached, the auxiliary (AUX) discharging relay opens, %;
160 160  ** 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 cell voltage, when reached, the auxiliary (AUX) discharging relay opens, %;
163 -** Tolerant cell voltage – a permissive cell voltage, upon reaching which the auxiliary (AUX) discharging relay re-closes, %;
164 164  * Switch off the discharging (AUX) relay if the battery voltage is out of the range:
165 -** Minimum battery voltage – minimum battery voltage, V;
166 -** Maximum battery voltage – maximum battery voltage, V;
155 +** Minimum voltage – minimum battery voltage, V;
156 +** Maximum voltage – maximum battery voltage, V;
167 167  * 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.
168 168  
169 -=== Charging/Discharging control ===
159 +== 3.5.4 Charging/Discharging control ==
170 170  
171 171   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.
172 172  
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178 178  
179 179  * Enable – a flag to enable Charging/Discharging contactor controller.
180 180  
181 -=== Main contactor ===
171 +== 3.5.5 Main contactor ==
182 182  
183 183  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.
184 184  
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210 210  * Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, second;
211 211  * Keep the contactor open until the device is reset – a flag for keeping the main contactor opened until the system be reset.
212 212  
213 -=== Power down control ===
203 +== 3.5.6 Power down control ==
214 214  
215 215  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.
216 216