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Wiki source code of 3.4 Protections

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2 = SettingsThe BMS Main 3 device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage.The BMS Main 3 device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage. =
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5 == Protections ==
6
7 The BMS Main 3 device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
8
9 1.
10 11.
11 111. Overcurrent
12
13 The BMS Main 3 device performs the overcurrent protection depending on current sensor values.
14
15 To change the overcurrent protection of the battery, select the "Protections → Overcurrent" section:
16
17 [[image:1733328382376-958.png]]
18
19 In this section:
20
21 * Enable – a flag to enable the protection;
22 * Maximum charging current, А;
23 * Tolerant charging current, А;
24 * Maximum discharging current, А;
25 * Tolerant discharging current, А;
26 * Delay before setting the error, millisecond;
27 * Delay before clearing the error, second;
28 * Lock – a flag to block the error until the device is restarted.
29
30 As a result of operation of the overcurrent protection, the "Overcurrent" error is generated.
31
32 Error generation conditions:
33
34 * the current is positive (charging), and its modulo value is greater than the “Maximum charging current” value for the “Delay before setting the error” time;
35 * the current is negative (discharging), and its modulo value is greater than the “Maximum discharging current” value for the “Delay before setting the error” time.
36
37 Conditions for removing the error:
38
39 * the current is positive (charging) or zero, and its modulo value is less than the “Tolerant charging current” value for the “Delay before clearing the error” time;
40 * the current is negative (discharging) or zero, and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
41
42 If there is the "Overcurrent" error, the charging contactor and discharging contactor open.
43
44
45 1.
46 11.
47 111. Undervoltage
48
49 The BMS Main 3 device implements battery protection from too low voltage on the cells.
50
51 To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
52
53 [[image:1733328382380-760.png]]
54
55 In this section:
56
57 * Enable – a flag to enable the protection;
58 * Minimum cell voltage, V;
59 * Tolerant cell voltage, V;
60 * Delay before setting the error, millisecond;
61 * Delay before clearing the error, second;
62 * Lock – a flag to block the error until the device is restarted.
63
64 As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
65
66 Error generation conditions:
67
68 * the minimum voltage among all cells of the battery is less than the “Minimum cell voltage” value for the “Delay before setting the error” time.
69
70 Conditions for removing the error:
71
72 * the minimum voltage among all cells of the battery is greater than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
73
74 If there is the "Undervoltage" error, the discharging contactor opens.
75
76
77 1.
78 11.
79 111. Overvoltage
80
81 The BMS Main 3 device implements battery protection from too high voltage on the cells.
82
83 To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
84
85 [[image:1733328382382-607.png]]
86
87 In this section:
88
89 * Enable – a flag to enable the protection;
90 * Maximum cell voltage, V;
91 * Tolerant cell voltage, V;
92 * Delay before setting the error, millisecond;
93 * Delay before clearing the error, second;
94 * Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
95 * Lock – a flag to block the error until the device is restarted.
96
97 As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
98
99 Error generation conditions:
100
101 * the maximum voltage among all cells of the battery is greater than the “Maximum cell voltage” value for the “Delay before setting the error” time.
102
103 Conditions for removing the error:
104
105 * the maximum voltage among all cells of the battery is less than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
106
107 If there is the "Overvoltage" error, the charging contactor and discharging contactor open (if the “Switch off the discharging contactor on error” flag is set).
108
109
110 1.
111 11.
112 111. Low temperature
113
114 The BMS Main 3 device implements battery protection from too low temperature.
115
116 To change the battery protection parameters from low temperature, select the "Protections → Low temperature" section:
117
118 [[image:1733328382382-670.png]]
119
120 In this section:
121
122 * Enable – a flag to enable the protection;
123 * Minimum charge temperature, °C;
124 * Tolerant charge temperature, °C;
125 * Minimum discharge temperature, °C;
126 * Tolerant discharge temperature, °C;
127 * Delay before setting the error, millisecond;
128 * Delay before clearing the error, second;
129 * Lock – a flag to block the error until the device is restarted.
130
131 As a result of the operation of the battery protection from low temperature, the "Low temperature (CH)" and/or “Low temperature (DCH)” error are generated.
132
133 Error generation conditions:
134
135 * the minimum temperature among all cells of the battery is less than the “Minimum charging (discharging) temperature” value for the “Delay before setting the error” time.
136
137 Conditions for removing the error:
138
139 * the minimum temperature among all cells of the battery is greater than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
140
141 If there is the "Low temperature (CH)" error, the charging contactor opens. If there is the "Low temperature (DCH)" error, the discharging contactor opens.
142
143 1.
144 11.
145 111. High temperature
146
147 The BMS Main 3 device implements battery protection from too high temperature.
148
149 To change the battery protection parameters from high temperature, select the "Protections → High temperature" section:
150
151 [[image:1733328399408-279.png]]
152
153 In this section:
154
155 * Enable – a flag to enable the protection;
156 * Maximum charge temperature, °C;
157 * Tolerant charge temperature, °C;
158 * Maximum discharge temperature, °C;
159 * Tolerant discharge temperature, °C;
160 * Delay before setting the error, millisecond;
161 * Delay before clearing the error, second;
162 * Lock – a flag to block the error until the device is restarted.
163
164 As a result of the operation of the battery protection from high temperature, the "High temperature (CH)" or “High temperature (DCH)” error is generated.
165
166 Error generation conditions:
167
168 * the maximum temperature among all cells of the battery is greater than the “Maximum charging (discharging) temperature” value for the “Delay before setting the error” time.
169
170 Conditions for removing the error:
171
172 * the maximum temperature among all cells of the battery is less than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
173
174 If there is the "High temperature (CH)" error, the charging contactor opens. If there is the "High temperature (DCH)" error, the discharging contactor opens.
175
176
177 1.
178 11.
179 111. Battery cover
180
181 To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
182
183 [[image:1733328399410-529.png]]
184
185 In this section:
186
187 * Enable – a flag to enable the protection;
188 * Delay before setting the error, millisecond;
189 * Delay before clearing the error, second;
190 * Lock – a flag to block the error until the device is restarted.
191
192 As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
193
194 Error generation conditions:
195
196 * there is a signal from the battery cover during the “Delay before setting the error” time.
197
198 Conditions for removing the error:
199
200 * no signal from the battery cover during the “Delay before clearing the error” time.
201
202 **If there is the "Battery cover error", the “Critical error” is generated and all contactors open.**
203
204
205 1.
206 11.
207 111. High humidity
208
209 The BMS Main 3 can detect that the battery is operating in high humidity conditions.
210
211 To change the detection parameters, select the "Protections → High humidity" section:
212
213 [[image:1733328399412-184.png]]
214
215 In this section:
216
217 * Enable – a flag to enable the detection;
218 * Maximum humidity, RH%;
219 * Tolerant humidity, RH%;
220 * Delay before setting the error, second;
221 * Delay before clearing the error, second;
222 * Lock the error until the device is reset.
223
224 As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
225
226 Error generation conditions:
227
228 * the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
229
230 Conditions for removing the error:
231
232 * the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
233
234 If there is the "High humidity" error, no action is taken. The error is indicative.
235
236
237 1.
238 11.
239 111. Water
240
241 The BMS Main 3 can protect the battery from working in very high humidity conditions.
242
243 To change the protection parameters, select the "Protections → Water" section:
244
245 [[image:1733328399413-393.png]]
246
247 In this section:
248
249 * Enable – a flag to enable the protection;
250 * Maximum humidity, RH%;
251 * Tolerant humidity, RH%;
252 * Delay before setting the error, second;
253 * Delay before clearing the error, second;
254 * Lock – lock the error until the device is reset.
255
256 As a result of the operation of the battery protection from water, the "Water" error is generated.
257
258 Error generation conditions:
259
260 * the measured humidity is greater than the “Maximum humidity” value during the “Delay before setting the error” time.
261
262 Conditions for removing the error:
263
264 * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
265
266 **If there is the “Water” error, the “Critical error” is generated and all relays open.**
267
268
269 1.
270 11.
271 111. High Logic temperature
272
273 To change the overheating protection parameters of BMS Logic devices, select the "Protections → High Logic temperature" section:
274
275 [[image:1733328399414-280.png]]
276
277 In this section:
278
279 * Enable – a flag to enable the protection;
280 * Maximum temperature, °C;
281 * Tolerant temperature, °C;
282 * Delay before setting the error, second;
283 * Delay before clearing the error, second;
284 * Lock – lock the error until the device is reset.
285
286 As a result of the operation of the protection from high temperatures of BMS Logic devices, the "High Logic temperature" is generated.
287
288 Error generation conditions:
289
290 * a BMS Logic device temperature is higher than the “Maximum temperature” value.
291
292 Conditions for removing the error:
293
294 * a BMS Logic device temperature is less than the “Tolerant temperature” value.
295
296 **Cell balancing is prohibited for overheated Logic devices.**
297
298
299 1.
300 11.
301 111. Logic offline
302
303 To change the protection parameters from loss of communication with BMS Logic devices, select the "Protections → Logic offline" section:
304
305 [[image:1733328399416-818.png]]
306
307 In this section:
308
309 * Enable – a flag to enable the protection;
310 * Lock – lock the error until the device is reset.
311
312 As a result of the protection from loss of communication with BMS Logic devices, the "Logic offline" error is generated.
313
314 Error generation conditions:
315
316 * at least one of the connected BMS Logic devices does not respond to the commands of the BMS Main device for 10 seconds.
317
318 Conditions for removing the error:
319
320 * all connected BMS Logic devices respond to the commands of the BMS Main device.
321
322 **If there is the "Logic offline" error, the “Critical error” is generated and all relays open.**