Wiki source code of 2. Installation and connection

Version 7.2 by Admin on 2025/02/20 13:15

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1.1	1	(% data-numbered-headings-start="2" style="--numbered-headings-start: 1;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
	2	= Installation and connection =
	3
	4	== Installation procedure ==
	5
3.1	6	The mounting area of the BMS Mini S must be protected from mechanical particles (dust, dirt, large objects) and water. The BMS Mini S is recommended to be placed close to the cells it controls, but away from high current circuits to reduce interference to measuring circuits and increase overall reliability of installation.
1.1	7
	8	The installation site must provide convenient access for subsequent connection to the device’s headers for connecting other system elements: a current sensor, contactors, display panels.
	9
3.1	10	The BMS Mini S has a heat sink to dissipate the heat generated during the balancing of the cells. When used in enclosed enclosures, heat must be removed from the sink, otherwise it may damage the device.
1.1	11
3.1	12	Overall and mounting dimensions of the BMS Mini S are shown on figures below.
1.1	13
	14
3.1	15	[[image:1733740731815-730.png\|\|data-xwiki-image-style-alignment="center" height="454" width="516"]]
1.1	16
3.1	17	[[image:1733740731820-300.png\|\|data-xwiki-image-style-alignment="center" height="172" width="453"]]
	18
4.1	19	\|Parameter\|Value
	20	\|Overall dimensions (length × width × height), mm\|124.5 × 117 × 17
3.1	21	\|Mounting dimensions (length × width), mm\|115 × 111
1.1	22	\|Mounting holes\|M3
7.1	23	\|Headers X1, X3-X9 type\|Molex series Micro-Fit
1.1	24
	25	== Headers ==
	26
3.1	27	There are names and locations of the BMS Mini S headers on figure below.
1.1	28
3.1	29	[[image:1733740765989-365.png\|\|data-xwiki-image-style-alignment="center" height="423" width="526"]]
1.1	30
6.1	31	=== X1 – header for contactors ===
1.1	32
7.2	33	Ответный разъем: Molex 430251800. Контакты: Molex 43030
	34
1.1	35	[[image:1733738660904-795.jpeg\|\|data-xwiki-image-style-alignment="center" height="96" width="316"]]
	36
	37	\|Pin\|Name\|Description
	38	\|1\|-\|-
	39	\|2\|+12V\|Supply voltage from the internal 12V DC/DC converter
	40	\|3\|GND\|Ground
	41	\|4\|+12V\|Supply voltage from the internal 12V DC/DC converter
	42	\|5\|GND\|Ground
	43	\|6\|+12V\|Supply voltage from the internal 12V DC/DC converter
	44	\|7\|GND\|Ground
	45	\|8\|+12V\|Supply voltage from the internal 12V DC/DC converter
	46	\|9\|GND\|Ground
	47	\|10\|-\|-
	48	\|11\|FB1\|Feedback signal from contactor 1
	49	\|12\|OUT1\|Contactor control 1 (low side switch), 100V, max 5A
	50	\|13\|FB2\|Feedback signal from contactor 2
	51	\|14\|OUT2\|Contactor control 2 (low side switch), 100V, max 5A
	52	\|15\|FB3\|Feedback signal from contactor 3
	53	\|16\|OUT3\|Contactor control 3 (low side switch), 100V, max 5A
	54	\|17\|FB4\|Feedback signal from contactor 4
	55	\|18\|OUT4\|Contactor control 4 (low side switch), 100V, max 5A
	56
	57	(% class="box warningmessage" %)
	58	(((
	59	ATTENTION!!!
	60	The load should be connected to +12V and OUTx pins. The feedback signal should be connected to FBx and GND pins. Below is an example of connecting the BMS to a contactor:
4.1	61	[[image:1733738760833-185.png\|\|data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true"]]
1.1	62	)))
	63
	64	=== X2 – mini-USB connector. ===
	65
4.1	66	Mini-USB connector is used for configuring the BMS via ElectricDeviceMonitor.
1.1	67
7.2	68	=== X3 – header for discrete inputs and outputs signals ===
1.1	69
7.2	70	Ответный разъем: Molex 430251600. Контакты: Molex 43030
	71
	72	(% class="wikigeneratedid" %)
	73	[[image:1733738860923-996.png\|\|data-xwiki-image-style-alignment="center" height="90" width="283"]]
	74
1.1	75	\|Pin\|Name\|Description
	76	\|1\|DIN1\|Discrete input 1 “dry contact” (+5V)
	77	\|2\|DIN2\|Discrete input 2 “dry contact” (+5V)
	78	\|3\|DIN3\|Discrete input 3 “dry contact” (+5V)
	79	\|4\|DIN4\|Discrete input 4 “dry contact” (+5V)
	80	\|5\|DOUT1\|Discrete output 1 (+5V, 20mA)
	81	\|6\|DOUT2\|Discrete output 2 (+5V, 20mA)
	82	\|7\|DOUT3\|Discrete output 3 (+5V, 20mA)
	83	\|8\|DOUT4\|Discrete output 4 (+5V, 20mA)
	84	\|9\|GND\|Discrete input 1 “dry contact” (ground)
	85	\|10\|GND\|Discrete input 2 “dry contact” (ground)
	86	\|11\|GND\|Discrete input 3 “dry contact” (ground)
	87	\|12\|GND\|Discrete input 4 “dry contact” (ground)
	88	\|13\|GND\|Discrete output 1 (ground)
	89	\|14\|GND\|Discrete output 2 (ground)
	90	\|15\|GND\|Discrete output 3 (ground)
	91	\|16\|GND\|Discrete output 4 (ground)
	92
7.2	93	=== Х4 – header for САN and RS485 interfaces ===
1.1	94
7.2	95	Ответный разъем: Molex 430250600. Контакты: Molex 43030
	96
1.1	97	[[image:1733738660905-974.jpeg\|\|data-xwiki-image-style-alignment="center" height="70" width="97"]]
	98
	99	\|Pin\|Name\|Description
	100	\|1\|RS485_B\|RS485 line B
	101	\|2\|+5V\|Isolated supply voltage 5V, max 400mA
	102	\|3\|CAN_L\|CAN-L line of the CAN bus
	103	\|4\|RS485_A\|RS485 line A
	104	\|5\|GND\|Isolated ground
	105	\|6\|CAN_H\|CAN-H line of the CAN bus
	106
7.2	107	=== Х5 – header for ON/OFF button ===
1.1	108
7.2	109	(% class="wikigeneratedid" %)
	110	Ответный разъем: Molex 430250200. Контакты: Molex 43030
	111
	112	(% class="wikigeneratedid" %)
	113	[[image:1733739076878-324.png\|\|data-xwiki-image-style-alignment="center" height="70" width="41"]]
	114
1.1	115	\|Pin\|Name\|Description
	116	\|1\|BTN\|Signal to turn on/off the BMS (“dry contact”, +3.3V)
	117	\|2\|GND\|Signal to turn on/off the BMS (“dry contact”, ground)
	118
7.2	119	=== X6 – header for cells temperature sensors ===
1.1	120
7.2	121	Ответный разъем: Molex 430251200. Контакты: Molex 43030
	122
1.1	123	[[image:1733738660906-697.png\|\|data-xwiki-image-style-alignment="center" height="91" width="190"]]
	124
	125	\|Pin\|Name\|Description
	126	\|1\|TEMPG1\|Ground of the thermistor 1
	127	\|2\|TEMPG2\|Ground of the thermistor 2
	128	\|3\|TEMPG3\|Ground of the thermistor 3
	129	\|4\|TEMPG4\|Ground of the thermistor 4
	130	\|5\|TEMPG5\|Ground of the thermistor 5
	131	\|6\|TEMPG6\|Ground of the thermistor 6
	132	\|7\|TEMP1\|Signal from the thermistor 1
	133	\|8\|TEMP2\|Signal from the thermistor 2
	134	\|9\|TEMP3\|Signal from the thermistor 3
	135	\|10\|TEMP4\|Signal from the thermistor 4
	136	\|11\|TEMP5\|Signal from the thermistor 5
	137	\|12\|TEMP6\|Signal from the thermistor 6
	138
7.2	139	=== X7 - header for current sensor ===
1.1	140
7.2	141	(% class="wikigeneratedid" %)
	142	Ответный разъем: Molex 430250400. Контакты: Molex 43030
	143
	144
	145
	146
	147
	148
	149
	150
	151	(% class="wikigeneratedid" %)
	152	[[image:1733739118831-618.png\|\|data-xwiki-image-style-alignment="center" height="79" width="71"]]
	153
1.1	154	\|Pin\|Name\|Description
	155	\|1\|+5V\|Supply voltage for a current sensor 5V, max 50 mA
	156	\|2\|GND\|Ground
	157	\|3\|Vcs\|ADC input (current sensor output)
	158	\|4\|Vref\|Auxiliary ADC input (current sensor reference signal)
	159
	160	=== Х8 – header for battery cells ===
	161
7.2	162	Ответный разъем: Molex 430251400. Контакты: Molex 43030
	163
3.1	164	[[image:1733740846257-439.png\|\|data-xwiki-image-style-alignment="center" height="89" width="219"]]
1.1	165
	166	\|Pin\|Name\|Description
	167	\|1\|C0\|Minus of the cell stack (for measuring purposes only)
	168	\|2\|C2\|Cell 2
	169	\|3\|C4\|Cell 4
	170	\|4\|C6\|Cell 6
	171	\|5\|C8\|Cell 8
	172	\|6\|C10\|Cell 10
3.1	173	\|7\|C12\|Cell 12 (maximum potential of the cell stack, for measuring purposes only)
	174	\|8\|NC\|Not connected
	175	\|9\|C1\|Cell 1 (minimum potential with respect to C0)
	176	\|10\|C3\|Cell 3
	177	\|11\|C5\|Cell 5
	178	\|12\|C7\|Cell 7
	179	\|13\|C9\|Cell 9
	180	\|14\|C11\|Cell 11
1.1	181
	182	=== Х9 – header to power the device ===
	183
7.2	184	Ответный разъем: Molex 430251800. Контакты: Molex 43030
	185
1.1	186	[[image:1733738660910-242.png\|\|data-xwiki-image-style-alignment="center" height="61" width="78"]]
	187
	188	\|Pin\|Name\|Description
3.1	189	\|1\|VBAT+\|Supply voltage for BMS Mini S
	190	\|2\|VBAT-\|BMS Mini S power ground
1.1	191
	192	(% class="box warningmessage" %)
	193	(((
2.1	194	Attention! The BMS Mini S device is galvanically connected to the battery (the minus of the battery is the device ground). In view of this, when a BMS Wi-Fi or BMS GSM module is connected to the device, the antenna braid will also be galvanically connected to the battery (connected to the battery negative). It is recommended to isolate the antenna cable from the battery case to prevent negative potential from appearing on the case.
1.1	195	)))
	196
	197	=== J1 – jumper for switching CAN bus terminal resistor ===
	198
2.1	199	To connect the terminal resistor between the CAN_H and CAN_L lines, install the jumper J1 according to the following figure:
1.1	200
	201	[[image:1733738660910-372.png\|\|data-xwiki-image-style-alignment="center" height="85" width="162"]]
	202
	203	=== J2 – jumper for switching RS-485 terminal resistor ===
	204
2.1	205	To connect the terminal resistor between the RS485_A and RS485_B lines, install the jumper J1 according to the following figure:
1.1	206
	207	[[image:1733738660910-372.png\|\|data-xwiki-image-style-alignment="center" height="85" width="162"]]
	208
	209	== Connection procedure ==
	210
	211	=== Connecting battery cells ===
	212
	213	To connect battery cells, follow figure below. Incorrect connection of the cells can damage the BMS Mini.
	214
	215	Begin the connection with the negative line of the battery: the “C0“ is connected to the “B-“, then the first cell (C1) is connected, then the second (С2), etc. If not all inputs of the cells are used, then the remaining inputs are connected to the cell with the most potential.
	216
3.1	217	[[image:1733740980966-804.png\|\|data-xwiki-image-style-alignment="center" height="471" width="721"]]
1.1	218
	219	(% class="box warningmessage" %)
	220	(((
	221	Attention!
	222	Connect the battery according to the diagram, otherwise the device may be damaged.
	223	)))
	224
	225	=== Connecting thermistors ===
	226
	227	Thermistors should be fastened to the cells, excluding short circuits to the cell terminals (for example, isolate thermistors with heat shrink).
	228
	229	[[image:1733738660915-688.png\|\|data-xwiki-image-style-alignment="center"]]
	230
	231

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