Wiki source code of 3.6 Battery protection

Version 33.6 by Admin on 2024/11/21 19:01

version	line-number	content
1.1	1	The BMS Main 2.x board continuously monitors the state of the cells, BMS Logic boards, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
	2
	3	== 3.6.1 Overcurrent protection ==
	4
	5	To change the current protection of the battery, select the menu "Protections → Overcurrent protection":
2.2	6
2.3	7	[[Overcurrent protection settings>>image:1732211959984-118.png\|\|data-xwiki-image-style-alignment="center" height="266" width="386"]]
	8
4.13	9	In this section:
2.3	10
	11	* Enable – a flag to enable the protection;
	12	* Maximum charging current, А;
	13	* Tolerant charging current, А;
	14	* Maximum discharging current, А;
	15	* Tolerant discharging current, А;
	16	* Delay before setting the error, second;
	17	* Delay before clearing the error, second;
	18	* Lock the error until the device is reset – a flag to block the error until the board is restarted.
	19
	20	As a result of operation of the current protection, the "Overcurrent" error is generated.
	21
	22	Error generation conditions:
	23
	24	* 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;
	25	* 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.
	26
	27	Conditions for removing the error:
	28
	29	* 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;
	30	* the current is negative (discharging), and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
	31
	32	(% class="box infomessage" %)
	33	(((
33.3	34	If there is the "Overcurrent" error, the charging and discharging relay open.
2.3	35	)))
3.2	36
	37	== 3.6.2 Undervoltage protection ==
	38
	39	The board implements battery protection from too low or too high voltage on the cells.
	40
	41	To change the battery protection parameters from low voltage on the cells, select the menu "Protections → Undervoltage protection":
	42
3.3	43	[[Undervoltage protection settings>>image:1732212212350-294.png\|\|data-xwiki-image-style-alignment="center" height="207" width="359"]]
	44
	45	In this section:
	46
	47	* Enable – a flag to enable the protection;
	48	* Minimum cell voltage, V;
	49	* Tolerant cell voltage, V;
	50	* Delay before setting the error, second;
	51	* Delay before clearing the error, second;
	52	* Lock the error until the device is reset.
	53
	54	As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
	55
	56	Error generation conditions:
	57
	58	* 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.
	59
	60	Conditions for removing the error:
	61
	62	* 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.
	63
	64	(% class="box infomessage" %)
	65	(((
33.4	66	If there is the "Undervoltage" error, the discharging relay opens.
3.3	67	)))
	68
4.2	69	3.6.3 Overvoltage protection
	70
	71	To change the battery protection parameters from high voltage on the cells, select the menu "Protections → Overvoltage protection":
	72
6.2	73	[[Overvoltage protection settings>>image:1732212357972-295.png\|\|data-xwiki-image-style-alignment="center" height="218" width="338"]]
4.2	74
4.3	75	In this section:
	76
	77	* Enable – a flag to enable the protection;
	78	* Maximum cell voltage, V;
	79	* Tolerant cell voltage, V;
	80	* Delay before setting the error, second;
	81	* Delay before clearing the error, second;
	82	* Switch off the discharging relay on error – a flag to open the discharging relay when the "Overvoltage" error is generated;
	83	* Lock the error until the device is reset.
	84
	85	As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
	86
	87	Error generation conditions:
	88
	89	* 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.
	90
	91	Conditions for removing the error:
	92
	93	* 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.
	94
	95	(% class="box infomessage" %)
	96	(((
33.4	97	If there is the "Overvoltage" error, the charging relay and discharging relay opens (if the “Switch off the discharging relay on error” flag is set).
4.3	98	)))
	99
4.10	100	== 3.6.4 Low temperature protection ==
4.3	101
4.11	102	The board implements battery protection from too low temperature.
4.4	103
4.11	104	To change the battery protection parameters from low temperature, select the menu "Protections → Low temperature protection":
	105
6.2	106	[[Low temperature protection settings>>image:1732213953083-955.png\|\|data-xwiki-image-style-alignment="center" height="237" width="338"]]
4.11	107
	108	In this section:
	109
	110	* Enable – a flag to enable the protection;
	111	* Minimum charging temperature, °C;
	112	* Tolerant charging temperature, °C;
	113	* Minimum discharging temperature, °C;
	114	* Tolerant discharging temperature, °C;
	115	* Delay before setting the error, second;
	116	* Delay before clearing the error, second;
	117	* Lock the error until the device is reset.
	118
	119	As a result of the operation of the battery protection from low temperature, the "Low CH temperature" or “Low DCH temperature” error is generated.
	120
	121	Error generation conditions:
	122
	123	* 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.
	124
	125	Conditions for removing the error:
	126
	127	* 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.
	128
	129	(% class="box infomessage" %)
	130	(((
33.4	131	If there is the "Low CH temperature" error, the charging relay opens.
	132	If there is the "Low DCH temperature" error, the discharging relay opens.
4.11	133	)))
	134
4.10	135	== 3.6.5 High temperature protection ==
4.5	136
4.11	137	The board implements battery protection from too high temperature.
	138
	139	To change the battery protection parameters from high temperature, select the menu "Protections → High temperature protection":
	140
7.2	141	[[High temperature protection settings>>image:1732213990755-759.png\|\|data-xwiki-image-style-alignment="center" height="258" width="370"]]
4.12	142
4.11	143	In this section:
	144
	145	* Enable – a flag to enable the protection;
	146	* Maximum charging temperature, °C;
	147	* Tolerant charging temperature, °C;
	148	* Maximum discharging temperature, °C;
	149	* Tolerant discharging temperature, °C;
	150	* Delay before setting the error, second;
	151	* Delay before clearing the error, second;
	152	* Lock the error until the device is reset.
	153
	154	As a result of the operation of the battery protection from high temperature, the "High CH temperature" or “High DCH temperature” error is generated.
	155
	156	Error generation conditions:
	157
	158	* 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.
	159
	160	Conditions for removing the error:
	161
	162	* 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.
	163
	164	(% class="box infomessage" %)
	165	(((
33.4	166	If there is the "High CH temperature" error, the charging relay opens.
	167	If there is the "High DCH temperature" error, the discharging relay opens.
4.11	168	)))
	169
4.10	170	== 3.6.6 Battery cover protection ==
4.5	171
4.12	172	To change the protection parameters from opening the battery cover, select the menu "Protections → Battery cover protection":
	173
7.2	174	[[Battery cover protection settings>>image:1732214030014-281.png\|\|data-xwiki-image-style-alignment="center" height="155" width="334"]]
	175
4.12	176	In this section:
	177
	178	* Enable – a flag to enable the protection;
	179	* Delay before setting the error, second;
	180	* Delay before clearing the error, second;
	181	* Lock the error until the device is reset.
	182
	183	As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
	184
	185	Error generation conditions:
	186
	187	* there is a signal from the battery cover during the “Delay before setting the error” time.
	188
	189	Conditions for removing the error:
	190
	191	* no signal from the battery cover during the “Delay before clearing the error” time.
	192
	193	(% class="box warningmessage" %)
	194	(((
33.4	195	If there is the "Battery cover error", the “Critical error” is generated and all relays open.
4.12	196	)))
	197
4.13	198	== 3.6.7 High humidity protection ==
4.10	199
4.13	200	The board can protect the battery from high humidity and water.
	201
	202	To change the protection parameters of the battery from high humidity, select the menu "Protections → High humidity protection":
	203
10.2	204	[[High humidity protection settings>>image:1732214076060-358.png\|\|data-xwiki-image-style-alignment="center" height="185" width="321"]]
4.14	205
4.13	206	In this section:
	207
	208	* Enable – a flag to enable the protection;
10.2	209	* Maximum humidity, RH%;
	210	* Tolerant humidity, RH%;
4.13	211	* Delay before setting the error, second;
	212	* Delay before clearing the error, second;
	213	* Lock the error until the device is reset.
	214
	215	As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
	216
	217	Error generation conditions:
	218
	219	* the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
	220
	221	Conditions for removing the error:
	222
	223	* the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
	224
4.14	225	(% class="box infomessage" %)
	226	(((
4.13	227	If there is the "High humidity" error, no action is taken. The error is indicative.
4.14	228	)))
4.13	229
4.10	230	== 3.6.8 Water protection ==
	231
4.14	232	To change the protection parameters of the battery from water, select the menu "Protections → Water protection":
	233
10.2	234	[[Water protection settings>>image:1732214111990-184.png\|\|data-xwiki-image-style-alignment="center" height="199" width="340"]]
4.14	235
	236	In this section:
	237
	238	* Enable – a flag to enable the protection;
	239	* Maximum (water) humidty, RH%;
	240	* Tolerant humidity, RH%;
	241	* Delay before setting the error, second;
	242	* Delay before clearing the error, second;
	243	* Lock the error until the device is reset.
	244
	245	As a result of the operation of the battery protection from water, the "Water" error is generated.
	246
	247	Error generation conditions:
	248
	249	* the measured humidity is greater than the “Maximum (water) humidity” value during the “Delay before setting the error” time.
	250
	251	Conditions for removing the error:
	252
	253	* the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
	254
	255	(% class="box warningmessage" %)
	256	(((
33.4	257	If there is the “Water” error, the “Critical error” is generated and all relays open.
4.14	258	)))
	259
4.10	260	== 3.6.9 Current sensor error ==
	261
4.14	262	The board is implemented to check the current sensor connection circuits. The circuits are checked for breakage and short-circuit to the +5 V supply line.
	263
	264	To change the test parameters of the current sensor connection circuits, select the menu "Protections → Current sensor error":
	265
12.2	266	[[Current sensor error settings>>image:1732214146724-132.png\|\|data-xwiki-image-style-alignment="center" height="438" width="365"]]
4.14	267
	268	In this section:
	269
	270	* Enable – a flag to enable the protection;
	271	* Maximum voltage, V;
	272	* Minimum voltage, V;
	273	* Hysteresis voltage – a hysteresis value to clear the error, V;
	274	* Delay before setting the error, second;
	275	* Delay before clearing the error, second;
	276	* Lock the error until the device is reset.
	277
	278	If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
	279
	280	Error generation conditions:
	281
	282	* the voltage in the signal line or zero level line of the current sensor is greater than the “Maximum voltage” value during the “Delay before setting the error” time;
	283	* the voltage in the signal line or zero level line of the current sensor is less than the “Minimum voltage” value during the “Delay before setting the error” time.
	284
	285	Conditions for removing the error:
	286
	287	* the voltage in the signal line or zero level line of the current sensor is in range from (Minimum voltage + Hysteresis voltage) to (Maximum voltage - Hysteresis voltage) during the “Delay before clearing the error” time.
	288
4.15	289	(% class="box warningmessage" %)
	290	(((
33.4	291	If there is the “Current sensor error”, the “Critical error” is generated and all relays open.
4.15	292	)))
4.14	293
4.10	294	== 3.6.10 Short circuit protection ==
	295
4.15	296	The BMS implements a protection of power circuits (contactors, power cables) against overheating caused by the flow of high current for a long time.
	297
	298	To change the protection parameters from short circuit, select the menu "Protections → Short circuit protection":
	299
13.2	300	[[Short circuit protection settings>>image:1732214207026-822.png\|\|data-xwiki-image-style-alignment="center" height="528" width="371"]]
4.15	301
	302	In this section:
	303
	304	* Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
	305	** Enable – a flag to enable the protection;
	306	** Maximum current, A;
	307	** Delay before setting the error, second;
	308	* Delay before clearing the error, second;
	309	* Switch off the charging relay on error – a flag to open the charging relay when the "Short circuit" error occurs;
	310	* Switch off the discharging relay on error – a flag to open the discharging relay when the "Short circuit" error occurs;
	311	* Lock the error until the device is reset.
	312
	313	If there is a short circuit, the "Short circuit" error is generated.
	314
	315	Error generation conditions:
	316
	317	* at any of the three protection levels, the current modulo is greater than the “Maximum current” value during the “Delay before setting the error” time.
	318
	319	Conditions for removing the error:
	320
	321	* the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
	322
	323	(% class="box infomessage" %)
	324	(((
33.4	325	If there is the "Short circuit" error, the charging relay opens (the “Switch off the charging relay on error” flag is set) and the discharging relay opens (the “Switch off the discharging relay on error flag” is set).
4.15	326	)))
	327
4.10	328	== 3.6.11 Contactor high temperature protection ==
	329
4.15	330	The BMS protects power contactors from overheating. To measure the temperature of the contactor, a thermistor is used, connected to the P13 connector of the board. Configuring of the analog input for temperature measurement is described in section Input signals.
	331
	332	To change the overheating protection parameters of power contactors, select the menu "Protections → Contactor high temperature protection":
	333
14.2	334	[[Contactor high temperature protection settings>>image:1732214237851-405.png\|\|data-xwiki-image-style-alignment="center" height="234" width="336"]]
4.15	335
	336	In this section:
	337
	338	* Enable – a flag to enable the protection;
	339	* Maximum temperature, °C;
	340	* Tolerant temperature, °C;
	341	* Delay before setting the error, second;
	342	* Delay before clearing the error, second;
	343	* Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
	344	* Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
	345	* Lock the error until the device is reset.
	346
	347	If there is a contactor overheat, the "Contactor high temperature" error is generated.
	348
	349	Error generation conditions:
	350
	351	* the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
	352
	353	Conditions for removing the error:
	354
	355	* the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
	356
	357	(% class="box infomessage" %)
	358	(((
33.5	359	If there is the "Contactor high temperature" error, the charging relay opens (the “Switch off the charging relay on error” flag is set) and the discharging relay opens (the “Switch off the discharging relay on error flag” is set).
4.15	360	)))
	361
4.10	362	== 3.6.12 Unallowable charging protection ==
	363
4.16	364	The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
	365
	366	To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
	367
14.2	368	[[Unallowable charging protection settings>>image:1732214272022-547.png\|\|data-xwiki-image-style-alignment="center" height="145" width="312"]]
4.16	369
	370	In this section:
	371
	372	* Enable – a flag to enable the protection;
	373	* Delay before setting the error, second;
	374	* Delay before clearing the error, second;
	375	* Lock the error until the device is reset.
	376
	377	If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
	378
	379	Error generation conditions:
	380
	381	* the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
	382
	383	Conditions for removing the error:
	384
	385	* the battery current is zero during the “Delay before clearing the error” time.
	386
	387	(% class="box infomessage" %)
	388	(((
33.5	389	If there is the "Unallowable charging" error, the discharging relay opens.
4.16	390	)))
	391
4.10	392	== 3.6.13 Stuck contactor protection ==
	393
4.16	394	The BMS Main 2.x protects contactors against sticking.
	395
	396	To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
	397
17.2	398	[[Stuck contactor protection settings>>image:1732214367207-318.png\|\|data-xwiki-image-style-alignment="center" height="152" width="331"]]
4.16	399
	400	In this section:
	401
	402	* Enable – a flag to enable the protection;
	403	* Delay before setting the error, second;
	404	* Delay before clearing the error, second;
	405	* Lock the error until the device is reset;
	406
	407	If there is a stuck contactor, the “Stuck contactor” error is generated.
	408
	409	Error generation conditions:
	410
	411	* charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
	412
33.5	413
4.10	414	== 3.6.14 Contactor feedback check ==
	415
4.16	416	The BMS Main 2.x can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, one of the discrete input must be set as corresponding contactor feedback signal (see section Input and output signals).
	417
	418	To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
	419
17.2	420	[[Contactor feedback check settings>>image:1732214400721-274.png\|\|data-xwiki-image-style-alignment="center" height="150" width="323"]]
4.17	421
	422	In this section:
	423
	424	* Enable – a flag to enable the protection;
	425	* Delay before setting the error, second;
	426	* Delay before clearing the error, second;
	427	* Lock the error until the device is reset;
	428
	429	If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
	430
	431	* discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
	432
33.5	433
4.10	434	== 3.6.15 Charging contactor cycles protection ==
	435
4.18	436	The BMS protects the charging contactor against frequent switching.
4.17	437
4.18	438	To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
	439
19.2	440	[[Charging contactor cycles protection settings>>image:1732214432750-543.png\|\|data-xwiki-image-style-alignment="center" height="260" width="336"]]
4.18	441
	442	In this section:
	443
	444	* Enable – a flag to enable the protection;
	445	* Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
	446	* Period – a time in which the BMS counts switchings of the charging contactor, second;
	447	* Delay before setting the error, second;
	448	* Delay before clearing the error, second;
	449	* Lock the error until the device is reset;
	450	* Cycles – a number of the charging contactor switchings made during battery operation.
	451
	452	If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
	453
	454	Error generation conditions:
	455
	456	* the number of switchings of the charging contactor for the “Period” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
	457
	458	Conditions for removing the error:
	459
	460	* the “Delay before clearing the error” time has passed since the error was generated.
	461
	462	(% class="box infomessage" %)
	463	(((
33.5	464	If there is the "CH contactor cycles error" error, the charging relay opens.
4.18	465	)))
	466
4.10	467	== 3.6.16 Discharging contactor cycles protection ==
	468
4.18	469	The BMS protects the discharging contactor against frequent switching.
	470
	471	To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
	472
19.2	473	[[Discharging contactor cycles protection settings>>image:1732214468462-541.png\|\|data-xwiki-image-style-alignment="center" height="269" width="346"]]
4.18	474
	475	In this section:
	476
	477	* Enable – a flag to enable the protection;
	478	* Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
	479	* Period – a time in which the BMS counts switchings of the charging contactor, second;
	480	* Delay before setting the error, second;
	481	* Delay before clearing the error, second;
	482	* Lock the error until the device is reset;
	483	* Cycles – a number of the charging contactor switchings made during battery operation.
	484
	485	If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
	486
	487	Error generation conditions:
	488
	489	* the number of switchings of the discharging contactor for the “Period” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
	490
	491	Conditions for removing the error:
	492
	493	* the “Delay before clearing the error” time has passed since the error was generated.
	494
	495	(% class="box infomessage" %)
	496	(((
33.5	497	If there is the "DCH contactor cycles error" error, the discharging relay opens.
4.18	498	)))
	499
4.10	500	== 3.6.17 Temperature sensor error ==
	501
4.18	502	The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
	503
	504	To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
	505
21.2	506	[[Temperature sensor error settings>>image:1732214501360-654.png\|\|data-xwiki-image-style-alignment="center" height="154" width="334"]]
4.18	507
	508	In this section:
	509
	510	* Enable – a flag to enable the protection;
	511	* Delay before setting the error, second;
	512	* Delay before clearing the error, second;
	513	* Lock the error until the device is reset.
	514
	515	If there are no temperature sensors connected to a BMS Logic board or any temperature sensor is shorted, the "No temp. sensors" error and "Temp. sensor is shorted" error are generated respectively. These errors generated and removed with the “Delay before setting the error” and “Delay before clearing the error” delays.
	516
4.19	517	(% class="box warningmessage" %)
	518	(((
33.6	519	If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the “Critical error” is generated and all relays open.
4.19	520	)))
4.18	521
4.10	522	== 3.6.18 Logic high temperature protection ==
	523
4.19	524	To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
	525
21.2	526	[[Logic high temperature protection settings>>image:1732214545352-111.png\|\|data-xwiki-image-style-alignment="center" height="156" width="309"]]
4.19	527
	528	In this section:
	529
	530	* Enable – a flag to enable the protection;
	531	* Maximum Logic temperature, °C;
	532	* Tolerant Logic temperature, °C;
	533	* Lock the error until the device is reset.
	534
	535	As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
	536
	537	Error generation conditions:
	538
	539	* a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
	540
	541	Conditions for removing the error:
	542
	543	* a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
	544
	545	(% class="box infomessage" %)
	546	(((
33.3	547	Cell balancing is prohibited for overheated boards.
4.19	548	)))
	549
4.10	550	== 3.6.19 Logic offline protection ==
	551
4.19	552	To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
	553
22.2	554	[[Logic offline protection settings>>image:1732214579147-515.png\|\|data-xwiki-image-style-alignment="center" height="107" width="204"]]
4.19	555
4.20	556	In this section:
4.19	557
4.20	558	* Enable – a flag to enable the protection;
	559	* Lock the error until the device is reset.
	560
	561	As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
	562
	563	Error generation conditions:
	564
	565	* at least one of the connected BMS Logic boards does not respond to the commands of the BMS Main 2.x board for 10 seconds.
	566
	567	Conditions for removing the error:
	568
	569	* all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
	570
	571	(% class="box warningmessage" %)
	572	(((
33.6	573	If there is the "Logic offline" error, the “Critical error” is generated and all relays open.
4.20	574	)))
	575
4.10	576	== 3.6.20 Cell count protection ==
	577
4.20	578	To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
	579
24.2	580	[[Cell count protection settings>>image:1732214641606-453.png\|\|data-xwiki-image-style-alignment="center" height="178" width="341"]]
4.20	581
	582	In this section:
	583
	584	* Enable – a flag to enable the protection;
	585	* Cell count – a number of cells connected to the BMS;
	586	* Delay before setting the error, second;
	587	* Delay before clearing the error, second;
	588	* Lock the error until the device is reset.
	589
	590	As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
	591
	592	Error generation conditions:
	593
	594	* the number of cells connected to the BMS is not equal to the “Cell count” value during the “Delay before setting the error” time.
	595
	596	Conditions for removing the error:
	597
	598	* the number of cells connected to the BMS is equal to the “Cell count” value during the “Delay before clearing the error” time.
	599
	600	(% class="box warningmessage" %)
	601	(((
33.6	602	If there is the "Cell count error", the “Critical error” is generated and all relays open.
4.20	603	)))
	604
4.10	605	== 3.6.21 Logic count protection ==
	606
4.20	607	To change the protection parameters from the mismatch of the number of BMS Logic boards to the set value, select the menu "Protections → Logic count protection":
	608
24.2	609	[[Logic count protection settings>>image:1732214675358-202.png\|\|data-xwiki-image-style-alignment="center" height="163" width="230"]]
4.20	610
	611	In this section:
	612
	613	* Enable – a flag to enable the protection;
	614	* Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
	615	* Fast scan – a flag to scan BMS Logic boards fast (boards with addresses from 1 to “Logic count” are scanned; this mode reduces BMS system startup time);
	616	* Lock the error until the device is reset.
	617
	618	As a result of the operation of the protection from the mismatch of the number of BMS Logic boards, the "Logic count error" is generated.
	619
	620	Error generation conditions:
	621
	622	* the number of BMS Logic boards connected to the BMS Main 2.x is not equal to the “Logic count” value.
	623
	624	Conditions for removing the error:
	625
	626	* the number of BMS Logic boards connected to the BMS Main is equal to the “Logic count” value.
	627
	628	(% class="box warningmessage" %)
	629	(((
33.6	630	If there is the "Logic count error", the “Critical error” is generated and all relays open.
4.20	631	)))
	632
4.10	633	== 3.6.22 WDT protection ==
	634
4.20	635	If the BMS firmware hangs, the watchdog timer resets the board. The BMS can detect that the board was reset and generates the “WDT reset” error.
	636
	637	To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
	638
24.3	639	[[WDT protection settings>>image:1732214703914-144.png\|\|data-xwiki-image-style-alignment="center" height="127" width="323"]]
4.20	640
4.21	641	In this section:
	642
	643	* Enable – a flag to enable the protection;
	644	* Delay before clearing the error, second;
	645	* Lock the error until the device is reset.
	646
	647	Conditions for removing the error:
	648
	649	* the “Delay before clearing the error” time has passed from the board startup.
	650
4.22	651	(% class="box warningmessage" %)
	652	(((
33.6	653	If there is the "WDT reset" error, the “Critical error” is generated and all relays open.
4.22	654	)))
4.21	655
4.10	656	== 3.6.23 Insulation monitoring ==
	657
4.22	658	BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
	659
	660	To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
	661
26.2	662	[[Insulation monitoring settings>>image:1732214731490-961.png\|\|data-xwiki-image-style-alignment="center" height="162" width="315"]]
4.22	663
	664	In this section:
	665
	666	* Enable – a flag to enable the protection;
	667	* Delay before setting the error, second;
	668	* Delay before clearing the error, second;
	669	* Lock the error until the device is reset.
	670
	671	Error is set if corresponding discrete input is set up and it received logical zero.
	672
4.10	673	== 3.6.24 Critical error parameters ==
	674
4.22	675	To change the critical error parameters, select the menu "Protections → Critical error parameters":
	676
26.2	677	[[Critical error parameters settings>>image:1732214761141-983.png\|\|data-xwiki-image-style-alignment="center" height="158" width="348"]]
4.22	678
	679	In this section:
	680
	681	* Enable – a flag to enable the protection;
	682	* Delay before setting the error, second;
	683	* Delay before clearing the error, second;
	684	* Lock the error until the device is reset.
	685
	686	The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
	687
	688	* “Battery cover error”;
	689	* “Water”;
	690	* “Logic offline”;
	691	* “Cell count error”;
	692	* “Logic count error”;
	693	* “ADC error”;
	694	* “No temp. sensors”;
	695	* “Temp. sensor is shorted”;
	696	* “Current sensor error”;
	697	* “Shunt offline”;
	698	* “Shunt error”;
	699	* “Settings error”;
	700	* “WDT reset”.
	701
	702	The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
	703
	704	(% class="box warningmessage" %)
	705	(((
	706	If there is the “Critical error”, all relays open.
	707	)))
	708
4.10	709	== 3.6.25 General error parameters ==
	710
27.2	711	To change the general error parameters, select the menu "Protections → General error parameters":
	712
	713	[[General error parameters settings>>image:1732214987517-111.png\|\|data-xwiki-image-style-alignment="center" height="535" width="349"]]
	714
	715	In this section:
	716
	717	* Enable – a flag to enable the protection;
	718	* Delay before setting the error, second;
	719	* Delay before clearing the error, second;
27.3	720	* Lock the error until the device is reset;
	721	* Errors – a section to select errors that should trigger General error.
27.2	722
28.2	723	The critical error flag is generated if at least one of the selected errors is generated during the “Delay before setting the error” time.
27.3	724
28.2	725	The “General error” is cleared if there are no errors from selected list during the “Delay before clearing the error” time.
	726
33.6	727	(% class="box infomessage" %)
	728	(((
28.2	729	The "General error" is //indicative //and can be linked to any discrete output of the board.
33.6	730	)))
28.2	731
4.10	732	== 3.6.26 Low SOC signal ==
	733
4.22	734	To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
	735
30.2	736	[[Low SOC signal settings>>image:1732215174961-645.png\|\|data-xwiki-image-style-alignment="center" height="186" width="325"]]
4.22	737
	738	In this section:
	739
	740	* Enable – a flag to enable signal generation;
	741	* Minimum SOC, %;
	742	* Tolerant SOC, %;
	743	* Delay before setting the signal, second;
	744	* Delay before clearing the signal, second;
	745	* Lock the signal until the device is reset.
	746
	747	Signal generation conditions:
	748
	749	* the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
	750
	751	Conditions for clearing the signal:
	752
	753	* the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
	754
33.6	755	(% class="box infomessage" %)
	756	(((
4.23	757	The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
33.6	758	)))
4.22	759
4.10	760	== 3.6.27 High charging current signal ==
	761
4.23	762	To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
	763
30.2	764	[[High charging current signal settings>>image:1732215211714-445.png\|\|data-xwiki-image-style-alignment="center" height="181" width="322"]]
4.23	765
	766	In this section:
	767
	768	* Enable – a flag to enable signal generation;
	769	* Maximum charging current, А;
	770	* Tolerant charging current, А;
	771	* Delay before setting the signal, second;
	772	* Delay before clearing the signal, second;
	773	* Lock the signal until the device is reset.
	774
	775	Signal generation conditions:
	776
	777	* the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
	778
	779	Conditions for clearing the signal:
	780
	781	* the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
	782
33.6	783	(% class="box infomessage" %)
	784	(((
4.23	785	The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
33.6	786	)))
4.23	787
4.10	788	== 3.6.28 Heater control ==
	789
4.23	790	To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
	791
32.2	792	[[Heater control settings>>image:1732215252650-791.png\|\|data-xwiki-image-style-alignment="center" height="233" width="370"]]
4.23	793
	794	In this section:
	795
	796	* Enable – a flag to enable heater control;
	797	* Minimum cell temperature, °C;
	798	* Tolerant cell temperature, °C;
	799	* Delay before setting the signal, second;
	800	* Delay before clearing the signal, second;
	801	* Lock the signal until the device is reset;
	802	* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
	803
	804	As a result of operating the heating algorithm, the “Heater” signal is generated.
	805
	806	Conditions of signal generation:
	807
	808	* The minimum temperature among all cells of the battery is less than the “Minimum cell temperature” value during the “Delay before setting the signal” time.
	809
	810	Conditions for clearing the signal:
	811
	812	* the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before clearing the signal” time.
	813
4.24	814	(% class="box infomessage" %)
	815	(((
33.6	816	If there is the "Heater" signal, the heater relay closes and/or a signal is output to the corresponded digital output.
4.24	817	)))
4.23	818
4.10	819	== 3.6.29 Heater (AUX) control ==
	820
4.25	821	To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
4.24	822
32.2	823	[[Heater (AUX) control settings>>image:1732215282135-420.png\|\|data-xwiki-image-style-alignment="center" height="228" width="361"]]
4.24	824
	825	In this section:
	826
	827	* Enable – a flag to enable heater control;
	828	* Minimum cell temperature, °C;
	829	* Tolerant cell temperature, °C;
	830	* Delay before setting the signal, second;
	831	* Delay before clearing the signal, second;
	832	* Lock the signal until the device is reset;
	833	* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
	834
	835	As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
	836
	837	Conditions of signal generation:
	838
	839	* The minimum temperature among all cells of the battery is less than the “Minimum cell temperature” value during the “Delay before setting the signal” time.
	840
	841	Conditions for clearing the signal:
	842
	843	* the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before clearing the signal” time.
	844
4.25	845	(% class="box infomessage" %)
	846	(((
33.6	847	If there is the "Heater (AUX)" signal, the auxiliary heater relay closes and/or a signal is output to the corresponded digital output.
4.25	848	)))
4.24	849
4.10	850	== 3.6.30 Cooler control ==
	851
4.25	852	To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
	853
33.2	854	[[Cooler control settings>>image:1732215313977-499.png\|\|data-xwiki-image-style-alignment="center" height="219" width="348"]]
4.25	855
	856	In this section:
	857
	858	* Enable – a flag to enable cooler control;
	859	* Maximum cell temperature, °C;
	860	* Tolerant cell temperature, °C;
	861	* Delay before setting the signal, second;
	862	* Delay before clearing the signal, second;
	863	* Lock the signal until the device is reset;
	864	* Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
	865
	866	As a result of operating the cooling algorithm, the "Cooler" signal is generated.
	867
	868	Conditions of signal generation:
	869
	870	* the maximum temperature among all cells of the battery is greater than the “Maximum cell temperature” value during the “Delay before setting the signal” time.
	871
	872	Conditions for clearing the signal:
	873
	874	* the maximum temperature among all cells of the battery is less than the “Tolerant cell temperature” value during the “Delay before clearing the signal” time.
	875
	876	(% class="box infomessage" %)
	877	(((
	878	If there is the "Cooler" signal, the cooler relay closes and/or a signal is output to the corresponded digital output.
	879	)))
	880
4.10	881	== 3.6.31 Fault simulation ==
4.26	882
	883	The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
	884
	885	To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
	886
33.2	887	[[Fault simulation settings>>image:1732215359330-850.png\|\|data-xwiki-image-style-alignment="center" height="732" width="204"]]
4.26	888
	889	In this section:
	890
	891	* Overcurrent;
	892	* Undervoltage;
	893	* Overvoltage;
	894	* Low CH temperature;
	895	* Low DCH temperature;
	896	* High CH temperature;
	897	* High DCH temperature;
	898	* Battery cover error;
	899	* High humidity;
	900	* Water;
	901	* Current sensor error;
	902	* Short circuit;
	903	* Contactor high temperature;
	904	* Unallowable charging;
	905	* Stuck contactor;
	906	* CH contactor feedback error;
	907	* DCH contactor feedback error;
	908	* PCH contactor feedback error;
	909	* CH/DCH contactor feedback error;
	910	* Main contactor feedback error;
	911	* CH contactor cycles error;
	912	* DCH contactor cycles error;
	913	* Logic high temperature;
	914	* Logic offline;
	915	* Cell count error;
	916	* Logic count error;
	917	* Insulation error;
	918	* Critical error;
	919	* Low SOC;
	920	* High charging current;
	921	* Heater;
	922	* Cooler.
	923
	924	To simulate errors, set the necessary flags and click on the "Save" button.

Wiki source code of 3.6 Battery protection

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