Wiki source code of 2. Installation and connection

Version 12.1 by Admin on 2025/03/03 08:37

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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
6.1	6	The mounting area of the BMS Mini must be protected from mechanical particles (dust, dirt, large objects) and water. The BMS Mini 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
6.1	10	The BMS Mini 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
6.1	12	Overall and mounting dimensions of the BMS Mini are shown on figures below.
1.1	13
	14	[[image:1733738313780-948.png\|\|data-xwiki-image-style-alignment="center" height="442" width="547"]]
	15
	16	[[image:1733738313786-252.png\|\|data-xwiki-image-style-alignment="center" height="150" width="545"]]
	17
2.1	18	\|(((
1.1	19	Parameter
	20	)))\|Value
2.1	21	\|(((
1.1	22	Overall dimensions (length × width × height), mm
	23	)))\|139.5 × 117 × 17
	24	\|Mounting dimensions (length × width), mm\|130 × 111
	25	\|Mounting holes\|M3
	26
	27	== Headers ==
	28
6.1	29	There are names and locations of the BMS Mini headers on figure below.
1.1	30
	31	[[image:1733738660900-622.png\|\|data-xwiki-image-style-alignment="center" height="379" width="508"]]
	32
8.2	33	=== Х1 – header for contactors ===
1.1	34
8.2	35	Receptacle Housing: Molex 430251800. Terminals: Molex 43030
	36
1.1	37	[[image:1733738660904-795.jpeg\|\|data-xwiki-image-style-alignment="center" height="96" width="316"]]
	38
	39	\|Pin\|Name\|Description
	40	\|1\|-\|-
	41	\|2\|+12V\|Supply voltage from the internal 12V DC/DC converter
	42	\|3\|GND\|Ground
	43	\|4\|+12V\|Supply voltage from the internal 12V DC/DC converter
	44	\|5\|GND\|Ground
	45	\|6\|+12V\|Supply voltage from the internal 12V DC/DC converter
	46	\|7\|GND\|Ground
	47	\|8\|+12V\|Supply voltage from the internal 12V DC/DC converter
	48	\|9\|GND\|Ground
	49	\|10\|-\|-
	50	\|11\|FB1\|Feedback signal from contactor 1
	51	\|12\|OUT1\|Contactor control 1 (low side switch), 100V, max 5A
	52	\|13\|FB2\|Feedback signal from contactor 2
	53	\|14\|OUT2\|Contactor control 2 (low side switch), 100V, max 5A
	54	\|15\|FB3\|Feedback signal from contactor 3
	55	\|16\|OUT3\|Contactor control 3 (low side switch), 100V, max 5A
	56	\|17\|FB4\|Feedback signal from contactor 4
	57	\|18\|OUT4\|Contactor control 4 (low side switch), 100V, max 5A
	58
	59	(% class="box warningmessage" %)
	60	(((
	61	ATTENTION!!!
	62	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:
	63	)))
	64
4.1	65	[[image:1733738760833-185.png\|\|data-xwiki-image-style-alignment="center" height="220" width="332"]]
1.1	66
	67	=== X2 – mini-USB connector. ===
	68
12.1	69	Mini-USB connector is used for configuring the BMS via ElectricDeviceMonitor.
1.1	70
8.2	71	=== X3 – header for discrete inputs and outputs signals ===
1.1	72
8.2	73	(% class="wikigeneratedid" %)
	74	Receptacle Housing: Molex 430251600. Terminals: Molex 43030
	75
	76
	77
	78
	79
	80
	81
	82
	83	(% class="wikigeneratedid" %)
	84	[[image:1733738860923-996.png\|\|data-xwiki-image-style-alignment="center" height="90" width="283"]]
	85
1.1	86	\|Pin\|Name\|Description
	87	\|1\|DIN1\|Discrete input 1 “dry contact” (+5V)
	88	\|2\|DIN2\|Discrete input 2 “dry contact” (+5V)
	89	\|3\|DIN3\|Discrete input 3 “dry contact” (+5V)
	90	\|4\|DIN4\|Discrete input 4 “dry contact” (+5V)
	91	\|5\|DOUT1\|Discrete output 1 (+5V, 20mA)
	92	\|6\|DOUT2\|Discrete output 2 (+5V, 20mA)
	93	\|7\|DOUT3\|Discrete output 3 (+5V, 20mA)
	94	\|8\|DOUT4\|Discrete output 4 (+5V, 20mA)
	95	\|9\|GND\|Discrete input 1 “dry contact” (ground)
	96	\|10\|GND\|Discrete input 2 “dry contact” (ground)
	97	\|11\|GND\|Discrete input 3 “dry contact” (ground)
	98	\|12\|GND\|Discrete input 4 “dry contact” (ground)
	99	\|13\|GND\|Discrete output 1 (ground)
	100	\|14\|GND\|Discrete output 2 (ground)
	101	\|15\|GND\|Discrete output 3 (ground)
	102	\|16\|GND\|Discrete output 4 (ground)
	103
8.2	104	=== Х4 – header for САN and RS485 interfaces ===
1.1	105
8.2	106	Receptacle Housing: Molex 430250600. Terminals: Molex 43030
	107
1.1	108	[[image:1733738660905-974.jpeg\|\|data-xwiki-image-style-alignment="center" height="70" width="97"]]
	109
	110	\|Pin\|Name\|Description
	111	\|1\|RS485_B\|RS485 line B
	112	\|2\|+5V\|Isolated supply voltage 5V, max 400mA
	113	\|3\|CAN_L\|CAN-L line of the CAN bus
	114	\|4\|RS485_A\|RS485 line A
	115	\|5\|GND\|Isolated ground
	116	\|6\|CAN_H\|CAN-H line of the CAN bus
	117
8.2	118	=== Х5 – header for ON/OFF button ===
1.1	119
8.2	120	Receptacle Housing: Molex 430250200. Terminals: Molex 43030
	121
	122	(% class="wikigeneratedid" %)
	123	[[image:1733739076878-324.png\|\|data-xwiki-image-style-alignment="center" height="70" width="41"]]
	124
1.1	125	\|Pin\|Name\|Description
	126	\|1\|BTN\|Signal to turn on/off the BMS (“dry contact”, +3.3V)
	127	\|2\|GND\|Signal to turn on/off the BMS (“dry contact”, ground)
	128
8.2	129	=== X6 – header for cells temperature sensors ===
1.1	130
8.2	131	Receptacle Housing: Molex 430251200. Terminals: Molex 43030
	132
1.1	133	[[image:1733738660906-697.png\|\|data-xwiki-image-style-alignment="center" height="91" width="190"]]
	134
	135	\|Pin\|Name\|Description
	136	\|1\|TEMPG1\|Ground of the thermistor 1
	137	\|2\|TEMPG2\|Ground of the thermistor 2
	138	\|3\|TEMPG3\|Ground of the thermistor 3
	139	\|4\|TEMPG4\|Ground of the thermistor 4
	140	\|5\|TEMPG5\|Ground of the thermistor 5
	141	\|6\|TEMPG6\|Ground of the thermistor 6
	142	\|7\|TEMP1\|Signal from the thermistor 1
	143	\|8\|TEMP2\|Signal from the thermistor 2
	144	\|9\|TEMP3\|Signal from the thermistor 3
	145	\|10\|TEMP4\|Signal from the thermistor 4
	146	\|11\|TEMP5\|Signal from the thermistor 5
	147	\|12\|TEMP6\|Signal from the thermistor 6
	148
8.2	149	=== X7 - header for current sensor ===
1.1	150
8.2	151	(% class="wikigeneratedid" %)
	152	Receptacle Housing: Molex 430250400. Terminals: Molex 43030
	153
	154
	155
	156
	157
	158
	159
	160
	161	(% class="wikigeneratedid" %)
	162	[[image:1733739118831-618.png\|\|data-xwiki-image-style-alignment="center" height="79" width="71"]]
	163
1.1	164	\|Pin\|Name\|Description
	165	\|1\|+5V\|Supply voltage for a current sensor 5V, max 50 mA
	166	\|2\|GND\|Ground
	167	\|3\|Vcs\|ADC input (current sensor output)
	168	\|4\|Vref\|Auxiliary ADC input (current sensor reference signal)
	169
	170	=== Х8 – header for battery cells ===
	171
8.3	172	Receptacle Housing: Molex 430252000. Terminals: Molex 43030
8.2	173
1.1	174	[[image:1733738660908-107.jpeg\|\|data-xwiki-image-style-alignment="center" height="83" width="291"]]
	175
	176	\|Pin\|Name\|Description
	177	\|1\|C0\|Minus of the cell stack (for measuring purposes only)
	178	\|2\|C2\|Cell 2
	179	\|3\|C4\|Cell 4
	180	\|4\|C6\|Cell 6
	181	\|5\|C8\|Cell 8
	182	\|6\|C10\|Cell 10
	183	\|7\|C12\|Cell 12
	184	\|8\|C14\|Cell 14
	185	\|9\|C16\|Cell 16
	186	\|10\|C18\|Cell 18 (maximum potential of the cell stack, for measuring purposes only)
	187	\|11\|NC\|Not connected
	188	\|12\|C1\|Cell 1 (minimum potential with respect to C0)
	189	\|13\|C3\|Cell 3
	190	\|14\|C5\|Cell 5
	191	\|15\|C7\|Cell 7
	192	\|16\|C9\|Cell 9
	193	\|17\|C11\|Cell 11
	194	\|18\|C13\|Cell 13
	195	\|19\|C15\|Cell 15
	196	\|20\|C17\|Cell 17
	197
	198	=== Х9 – header to power the device ===
	199
9.1	200	Receptacle Housing: Molex 436450200. Terminals: Molex 43030
	201
1.1	202	[[image:1733738660910-242.png\|\|data-xwiki-image-style-alignment="center" height="61" width="78"]]
	203
	204	\|Pin\|Name\|Description
	205	\|1\|VBAT+\|Supply voltage for BMS Mini
6.1	206	\|2\|VBAT-\|BMS Mini power ground
1.1	207
	208	(% class="box warningmessage" %)
	209	(((
6.1	210	Attention! The BMS Mini 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	211	)))
	212
	213	=== J1 – jumper for switching CAN bus terminal resistor ===
	214
2.1	215	To connect the terminal resistor between the CAN_H and CAN_L lines, install the jumper J1 according to the following figure:
1.1	216
	217	[[image:1733738660910-372.png\|\|data-xwiki-image-style-alignment="center" height="85" width="162"]]
	218
	219	=== J2 – jumper for switching RS-485 terminal resistor ===
	220
2.1	221	To connect the terminal resistor between the RS485_A and RS485_B lines, install the jumper J1 according to the following figure:
1.1	222
	223	[[image:1733738660910-372.png\|\|data-xwiki-image-style-alignment="center" height="85" width="162"]]
	224
	225	== Connection procedure ==
	226
	227	=== Connecting battery cells ===
	228
	229
	230	To connect battery cells, follow figure below. Incorrect connection of the cells can damage the BMS Mini.
	231
	232	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.
	233
2.1	234	[[image:1733738660912-678.png\|\|data-xwiki-image-style-alignment="center" height="326" width="650"]]
1.1	235
	236	(% class="box warningmessage" %)
	237	(((
	238	Attention!
	239	Connect the battery according to the diagram, otherwise the device may be damaged.
	240	)))
	241
	242	=== Connecting thermistors ===
	243
	244	Thermistors should be fastened to the cells, excluding short circuits to the cell terminals (for example, isolate thermistors with heat shrink).
	245
	246	[[image:1733738660915-688.png\|\|data-xwiki-image-style-alignment="center"]]
	247
	248

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