Wiki source code of 3.6 Battery protection

Version 12.3 by Admin on 2024/11/21 18:37

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	(((
4.13	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	(((
	66	If there is the "Undervoltage" error, the discharging relay opens.
	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	(((
	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).
	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	(((
4.12	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	(((
	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.
	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	(((
	195	If there is the "Battery cover error", the “Critical error” is generated and all relays open.
	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	(((
	257	If there is the “Water” error, the “Critical error” is generated and all relays open.
	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	(((
4.14	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
12.3	300	[[Short circuit protection setting>>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	(((
	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).
	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
	334
	335	In this section:
	336
	337	* Enable – a flag to enable the protection;
	338	* Maximum temperature, °C;
	339	* Tolerant temperature, °C;
	340	* Delay before setting the error, second;
	341	* Delay before clearing the error, second;
	342	* Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
	343	* Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
	344	* Lock the error until the device is reset.
	345
	346	If there is a contactor overheat, the "Contactor high temperature" error is generated.
	347
	348	Error generation conditions:
	349
	350	* the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
	351
	352	Conditions for removing the error:
	353
	354	* the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
	355
	356	(% class="box infomessage" %)
	357	(((
	358	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).
	359	)))
	360
4.10	361	== 3.6.12 Unallowable charging protection ==
	362
4.16	363	The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
	364
	365	To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
	366
	367
	368	In this section:
	369
	370	* Enable – a flag to enable the protection;
	371	* Delay before setting the error, second;
	372	* Delay before clearing the error, second;
	373	* Lock the error until the device is reset.
	374
	375	If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
	376
	377	Error generation conditions:
	378
	379	* the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
	380
	381	Conditions for removing the error:
	382
	383	* the battery current is zero during the “Delay before clearing the error” time.
	384
	385	(% class="box infomessage" %)
	386	(((
	387	If there is the "Unallowable charging" error, the discharging relay opens.
	388	)))
	389
4.10	390	== 3.6.13 Stuck contactor protection ==
	391
4.16	392	The BMS Main 2.x protects contactors against sticking.
	393
	394	To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
	395
	396
	397	In this section:
	398
	399	* Enable – a flag to enable the protection;
	400	* Delay before setting the error, second;
	401	* Delay before clearing the error, second;
	402	* Lock the error until the device is reset;
	403
	404	If there is a stuck contactor, the “Stuck contactor” error is generated.
	405
	406	Error generation conditions:
	407
	408	* charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
	409
4.10	410	== 3.6.14 Contactor feedback check ==
	411
4.16	412	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).
	413
	414	To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
	415
4.17	416
	417	In this section:
	418
	419	* Enable – a flag to enable the protection;
	420	* Delay before setting the error, second;
	421	* Delay before clearing the error, second;
	422	* Lock the error until the device is reset;
	423
	424	If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
	425
	426	* discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
	427
4.10	428	== 3.6.15 Charging contactor cycles protection ==
	429
4.18	430	The BMS protects the charging contactor against frequent switching.
4.17	431
4.18	432	To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
	433
	434
	435	In this section:
	436
	437	* Enable – a flag to enable the protection;
	438	* Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
	439	* Period – a time in which the BMS counts switchings of the charging contactor, second;
	440	* Delay before setting the error, second;
	441	* Delay before clearing the error, second;
	442	* Lock the error until the device is reset;
	443	* Cycles – a number of the charging contactor switchings made during battery operation.
	444
	445	If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
	446
	447	Error generation conditions:
	448
	449	* 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.
	450
	451	Conditions for removing the error:
	452
	453	* the “Delay before clearing the error” time has passed since the error was generated.
	454
	455	(% class="box infomessage" %)
	456	(((
	457	If there is the "CH contactor cycles error" error, the charging relay opens.
	458	)))
	459
4.10	460	== 3.6.16 Discharging contactor cycles protection ==
	461
4.18	462	The BMS protects the discharging contactor against frequent switching.
	463
	464	To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
	465
	466
	467	In this section:
	468
	469	* Enable – a flag to enable the protection;
	470	* Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
	471	* Period – a time in which the BMS counts switchings of the charging contactor, second;
	472	* Delay before setting the error, second;
	473	* Delay before clearing the error, second;
	474	* Lock the error until the device is reset;
	475	* Cycles – a number of the charging contactor switchings made during battery operation.
	476
	477	If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
	478
	479	Error generation conditions:
	480
	481	* 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.
	482
	483	Conditions for removing the error:
	484
	485	* the “Delay before clearing the error” time has passed since the error was generated.
	486
	487	(% class="box infomessage" %)
	488	(((
	489	If there is the "DCH contactor cycles error" error, the discharging relay opens.
	490	)))
	491
4.10	492	== 3.6.17 Temperature sensor error ==
	493
4.18	494	The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
	495
	496	To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
	497
	498
	499	In this section:
	500
	501	* Enable – a flag to enable the protection;
	502	* Delay before setting the error, second;
	503	* Delay before clearing the error, second;
	504	* Lock the error until the device is reset.
	505
	506	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.
	507
4.19	508	(% class="box warningmessage" %)
	509	(((
4.18	510	If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the “Critical error” is generated and all relays open.
4.19	511	)))
4.18	512
4.10	513	== 3.6.18 Logic high temperature protection ==
	514
4.19	515	To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
	516
	517
	518	In this section:
	519
	520	* Enable – a flag to enable the protection;
	521	* Maximum Logic temperature, °C;
	522	* Tolerant Logic temperature, °C;
	523	* Lock the error until the device is reset.
	524
	525	As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
	526
	527	Error generation conditions:
	528
	529	* a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
	530
	531	Conditions for removing the error:
	532
	533	* a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
	534
	535	(% class="box infomessage" %)
	536	(((
	537	Cell balancing is prohibited for overheated boards.
	538	)))
	539
4.10	540	== 3.6.19 Logic offline protection ==
	541
4.19	542	To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
	543
	544
4.20	545	In this section:
4.19	546
4.20	547	* Enable – a flag to enable the protection;
	548	* Lock the error until the device is reset.
	549
	550	As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
	551
	552	Error generation conditions:
	553
	554	* 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.
	555
	556	Conditions for removing the error:
	557
	558	* all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
	559
	560	(% class="box warningmessage" %)
	561	(((
	562	If there is the "Logic offline" error, the “Critical error” is generated and all relays open.
	563	)))
	564
4.10	565	== 3.6.20 Cell count protection ==
	566
4.20	567	To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
	568
	569
	570	In this section:
	571
	572	* Enable – a flag to enable the protection;
	573	* Cell count – a number of cells connected to the BMS;
	574	* Delay before setting the error, second;
	575	* Delay before clearing the error, second;
	576	* Lock the error until the device is reset.
	577
	578	As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
	579
	580	Error generation conditions:
	581
	582	* the number of cells connected to the BMS is not equal to the “Cell count” value during the “Delay before setting the error” time.
	583
	584	Conditions for removing the error:
	585
	586	* the number of cells connected to the BMS is equal to the “Cell count” value during the “Delay before clearing the error” time.
	587
	588	(% class="box warningmessage" %)
	589	(((
	590	If there is the "Cell count error", the “Critical error” is generated and all relays open.
	591	)))
	592
4.10	593	== 3.6.21 Logic count protection ==
	594
4.20	595	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":
	596
	597
	598	In this section:
	599
	600	* Enable – a flag to enable the protection;
	601	* Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
	602	* 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);
	603	* Lock the error until the device is reset.
	604
	605	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.
	606
	607	Error generation conditions:
	608
	609	* the number of BMS Logic boards connected to the BMS Main 2.x is not equal to the “Logic count” value.
	610
	611	Conditions for removing the error:
	612
	613	* the number of BMS Logic boards connected to the BMS Main is equal to the “Logic count” value.
	614
	615	(% class="box warningmessage" %)
	616	(((
	617	If there is the "Logic count error", the “Critical error” is generated and all relays open.
	618	)))
	619
4.10	620	== 3.6.22 WDT protection ==
	621
4.20	622	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.
	623
	624	To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
	625
	626
4.21	627	In this section:
	628
	629	* Enable – a flag to enable the protection;
	630	* Delay before clearing the error, second;
	631	* Lock the error until the device is reset.
	632
	633	Conditions for removing the error:
	634
	635	* the “Delay before clearing the error” time has passed from the board startup.
	636
4.22	637	(% class="box warningmessage" %)
	638	(((
4.21	639	If there is the "WDT reset" error, the “Critical error” is generated and all relays open.
4.22	640	)))
4.21	641
4.10	642	== 3.6.23 Insulation monitoring ==
	643
4.22	644	BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
	645
	646	To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
	647
	648
	649	In this section:
	650
	651	* Enable – a flag to enable the protection;
	652	* Delay before setting the error, second;
	653	* Delay before clearing the error, second;
	654	* Lock the error until the device is reset.
	655
	656	Error is set if corresponding discrete input is set up and it received logical zero.
	657
4.10	658	== 3.6.24 Critical error parameters ==
	659
4.22	660	To change the critical error parameters, select the menu "Protections → Critical error parameters":
	661
	662
	663	In this section:
	664
	665	* Enable – a flag to enable the protection;
	666	* Delay before setting the error, second;
	667	* Delay before clearing the error, second;
	668	* Lock the error until the device is reset.
	669
	670	The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
	671
	672	* “Battery cover error”;
	673	* “Water”;
	674	* “Logic offline”;
	675	* “Cell count error”;
	676	* “Logic count error”;
	677	* “ADC error”;
	678	* “No temp. sensors”;
	679	* “Temp. sensor is shorted”;
	680	* “Current sensor error”;
	681	* “Shunt offline”;
	682	* “Shunt error”;
	683	* “Settings error”;
	684	* “WDT reset”.
	685
	686	The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
	687
	688	(% class="box warningmessage" %)
	689	(((
	690	If there is the “Critical error”, all relays open.
	691	)))
	692
4.10	693	== 3.6.25 General error parameters ==
	694
	695	== 3.6.26 Low SOC signal ==
	696
4.22	697	To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
	698
	699
	700	In this section:
	701
	702	* Enable – a flag to enable signal generation;
	703	* Minimum SOC, %;
	704	* Tolerant SOC, %;
	705	* Delay before setting the signal, second;
	706	* Delay before clearing the signal, second;
	707	* Lock the signal until the device is reset.
	708
	709	Signal generation conditions:
	710
	711	* the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
	712
	713	Conditions for clearing the signal:
	714
	715	* the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
	716
4.23	717	The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
4.22	718
4.10	719	== 3.6.27 High charging current signal ==
	720
4.23	721	To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
	722
	723
	724	In this section:
	725
	726	* Enable – a flag to enable signal generation;
	727	* Maximum charging current, А;
	728	* Tolerant charging current, А;
	729	* Delay before setting the signal, second;
	730	* Delay before clearing the signal, second;
	731	* Lock the signal until the device is reset.
	732
	733	Signal generation conditions:
	734
	735	* the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
	736
	737	Conditions for clearing the signal:
	738
	739	* the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
	740
	741	The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
	742
4.10	743	== 3.6.28 Heater control ==
	744
4.23	745	To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
	746
	747
	748	In this section:
	749
	750	* Enable – a flag to enable heater control;
	751	* Minimum cell temperature, °C;
	752	* Tolerant cell temperature, °C;
	753	* Delay before setting the signal, second;
	754	* Delay before clearing the signal, second;
	755	* Lock the signal until the device is reset;
	756	* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
	757
	758	As a result of operating the heating algorithm, the “Heater” signal is generated.
	759
	760	Conditions of signal generation:
	761
	762	* 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.
	763
	764	Conditions for clearing the signal:
	765
	766	* 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.
	767
4.24	768	(% class="box infomessage" %)
	769	(((
4.23	770	If there is the "Heater" signal, the heater relay closes and/or a signal is output to the corresponded digital output.
4.24	771	)))
4.23	772
4.10	773	== 3.6.29 Heater (AUX) control ==
	774
4.25	775	To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
4.24	776
	777
	778	In this section:
	779
	780	* Enable – a flag to enable heater control;
	781	* Minimum cell temperature, °C;
	782	* Tolerant cell temperature, °C;
	783	* Delay before setting the signal, second;
	784	* Delay before clearing the signal, second;
	785	* Lock the signal until the device is reset;
	786	* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
	787
	788	As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
	789
	790	Conditions of signal generation:
	791
	792	* 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.
	793
	794	Conditions for clearing the signal:
	795
	796	* 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.
	797
4.25	798	(% class="box infomessage" %)
	799	(((
	800	If there is the "Heater (AUX)" signal, the auxiliary heater relay closes and/or a signal is output to the corresponded digital output.
	801	)))
4.24	802
4.10	803	== 3.6.30 Cooler control ==
	804
4.25	805	To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
	806
	807
	808	In this section:
	809
	810	* Enable – a flag to enable cooler control;
	811	* Maximum cell temperature, °C;
	812	* Tolerant cell temperature, °C;
	813	* Delay before setting the signal, second;
	814	* Delay before clearing the signal, second;
	815	* Lock the signal until the device is reset;
	816	* Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
	817
	818	As a result of operating the cooling algorithm, the "Cooler" signal is generated.
	819
	820	Conditions of signal generation:
	821
	822	* 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.
	823
	824	Conditions for clearing the signal:
	825
	826	* 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.
	827
	828	(% class="box infomessage" %)
	829	(((
	830	If there is the "Cooler" signal, the cooler relay closes and/or a signal is output to the corresponded digital output.
	831	)))
	832
4.10	833	== 3.6.31 Fault simulation ==
4.26	834
	835	The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
	836
	837	To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
	838
	839
	840	In this section:
	841
	842	* Overcurrent;
	843	* Undervoltage;
	844	* Overvoltage;
	845	* Low CH temperature;
	846	* Low DCH temperature;
	847	* High CH temperature;
	848	* High DCH temperature;
	849	* Battery cover error;
	850	* High humidity;
	851	* Water;
	852	* Current sensor error;
	853	* Short circuit;
	854	* Contactor high temperature;
	855	* Unallowable charging;
	856	* Stuck contactor;
	857	* CH contactor feedback error;
	858	* DCH contactor feedback error;
	859	* PCH contactor feedback error;
	860	* CH/DCH contactor feedback error;
	861	* Main contactor feedback error;
	862	* CH contactor cycles error;
	863	* DCH contactor cycles error;
	864	* Logic high temperature;
	865	* Logic offline;
	866	* Cell count error;
	867	* Logic count error;
	868	* Insulation error;
	869	* Critical error;
	870	* Low SOC;
	871	* High charging current;
	872	* Heater;
	873	* Cooler.
	874
	875	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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