Wiki source code of 2. Installation and connection

Version 5.2 by Admin on 2024/12/11 13:12

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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
5.1	6	The mounting area of the BMS Mini 2 must be protected from mechanical particles (dust, dirt, large objects) and water. The BMS Mini 2 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
5.1	10	The BMS Mini 2 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
5.1	12	Overall and mounting dimensions of the BMS Mini 2 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
5.1	29	There are names and locations of the BMS Mini 2 headers on figure below.
1.1	30
	31	[[image:1733738660900-622.png\|\|data-xwiki-image-style-alignment="center" height="379" width="508"]]
	32
	33	=== Х1 – header for contactors. ===
	34
	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:
	61	)))
	62
4.1	63	[[image:1733738760833-185.png\|\|data-xwiki-image-style-alignment="center" height="220" width="332"]]
1.1	64
	65	=== X2 – mini-USB connector. ===
	66
	67	Mini0USB connector is used for configuring the BMS via ElectricDeviceMonito
	68
3.1	69	=== X3 – header for discrete inputs and outputs signals.[[image:1733738860923-996.png\|\|data-xwiki-image-style-alignment="center" height="90" width="283"]] ===
1.1	70
	71	\|Pin\|Name\|Description
	72	\|1\|DIN1\|Discrete input 1 “dry contact” (+5V)
	73	\|2\|DIN2\|Discrete input 2 “dry contact” (+5V)
	74	\|3\|DIN3\|Discrete input 3 “dry contact” (+5V)
	75	\|4\|DIN4\|Discrete input 4 “dry contact” (+5V)
	76	\|5\|DOUT1\|Discrete output 1 (+5V, 20mA)
	77	\|6\|DOUT2\|Discrete output 2 (+5V, 20mA)
	78	\|7\|DOUT3\|Discrete output 3 (+5V, 20mA)
	79	\|8\|DOUT4\|Discrete output 4 (+5V, 20mA)
	80	\|9\|GND\|Discrete input 1 “dry contact” (ground)
	81	\|10\|GND\|Discrete input 2 “dry contact” (ground)
	82	\|11\|GND\|Discrete input 3 “dry contact” (ground)
	83	\|12\|GND\|Discrete input 4 “dry contact” (ground)
	84	\|13\|GND\|Discrete output 1 (ground)
	85	\|14\|GND\|Discrete output 2 (ground)
	86	\|15\|GND\|Discrete output 3 (ground)
	87	\|16\|GND\|Discrete output 4 (ground)
	88
	89	=== Х4 – header for САN and RS485 interfaces. ===
	90
	91	[[image:1733738660905-974.jpeg\|\|data-xwiki-image-style-alignment="center" height="70" width="97"]]
	92
	93	\|Pin\|Name\|Description
	94	\|1\|RS485_B\|RS485 line B
	95	\|2\|+5V\|Isolated supply voltage 5V, max 400mA
	96	\|3\|CAN_L\|CAN-L line of the CAN bus
	97	\|4\|RS485_A\|RS485 line A
	98	\|5\|GND\|Isolated ground
	99	\|6\|CAN_H\|CAN-H line of the CAN bus
	100
4.1	101	=== Х5 – header for ON/OFF button.[[image:1733739076878-324.png\|\|data-xwiki-image-style-alignment="center" height="70" width="41"]] ===
1.1	102
	103	\|Pin\|Name\|Description
	104	\|1\|BTN\|Signal to turn on/off the BMS (“dry contact”, +3.3V)
	105	\|2\|GND\|Signal to turn on/off the BMS (“dry contact”, ground)
	106
	107	=== X6 – header for cells temperature sensors. ===
	108
	109	[[image:1733738660906-697.png\|\|data-xwiki-image-style-alignment="center" height="91" width="190"]]
	110
	111	\|Pin\|Name\|Description
	112	\|1\|TEMPG1\|Ground of the thermistor 1
	113	\|2\|TEMPG2\|Ground of the thermistor 2
	114	\|3\|TEMPG3\|Ground of the thermistor 3
	115	\|4\|TEMPG4\|Ground of the thermistor 4
	116	\|5\|TEMPG5\|Ground of the thermistor 5
	117	\|6\|TEMPG6\|Ground of the thermistor 6
	118	\|7\|TEMP1\|Signal from the thermistor 1
	119	\|8\|TEMP2\|Signal from the thermistor 2
	120	\|9\|TEMP3\|Signal from the thermistor 3
	121	\|10\|TEMP4\|Signal from the thermistor 4
	122	\|11\|TEMP5\|Signal from the thermistor 5
	123	\|12\|TEMP6\|Signal from the thermistor 6
	124
4.1	125	=== X7 - header for current sensor.[[image:1733739118831-618.png\|\|data-xwiki-image-style-alignment="center" height="79" width="71"]] ===
1.1	126
	127	\|Pin\|Name\|Description
	128	\|1\|+5V\|Supply voltage for a current sensor 5V, max 50 mA
	129	\|2\|GND\|Ground
	130	\|3\|Vcs\|ADC input (current sensor output)
	131	\|4\|Vref\|Auxiliary ADC input (current sensor reference signal)
	132
	133	=== Х8 – header for battery cells ===
	134
	135	[[image:1733738660908-107.jpeg\|\|data-xwiki-image-style-alignment="center" height="83" width="291"]]
	136
	137	\|Pin\|Name\|Description
	138	\|1\|C0\|Minus of the cell stack (for measuring purposes only)
	139	\|2\|C2\|Cell 2
	140	\|3\|C4\|Cell 4
	141	\|4\|C6\|Cell 6
	142	\|5\|C8\|Cell 8
	143	\|6\|C10\|Cell 10
	144	\|7\|C12\|Cell 12
	145	\|8\|C14\|Cell 14
	146	\|9\|C16\|Cell 16
	147	\|10\|C18\|Cell 18 (maximum potential of the cell stack, for measuring purposes only)
	148	\|11\|NC\|Not connected
	149	\|12\|C1\|Cell 1 (minimum potential with respect to C0)
	150	\|13\|C3\|Cell 3
	151	\|14\|C5\|Cell 5
	152	\|15\|C7\|Cell 7
	153	\|16\|C9\|Cell 9
	154	\|17\|C11\|Cell 11
	155	\|18\|C13\|Cell 13
	156	\|19\|C15\|Cell 15
	157	\|20\|C17\|Cell 17
	158
	159	=== Х9 – header to power the device ===
	160
	161	[[image:1733738660910-242.png\|\|data-xwiki-image-style-alignment="center" height="61" width="78"]]
	162
	163	\|Pin\|Name\|Description
	164	\|1\|VBAT+\|Supply voltage for BMS Mini
5.1	165	\|2\|VBAT-\|BMS Mini 2 power ground
1.1	166
	167	(% class="box warningmessage" %)
	168	(((
5.1	169	Attention! The BMS Mini 2 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	170	)))
	171
	172	=== J1 – jumper for switching CAN bus terminal resistor ===
	173
2.1	174	To connect the terminal resistor between the CAN_H and CAN_L lines, install the jumper J1 according to the following figure:
1.1	175
	176	[[image:1733738660910-372.png\|\|data-xwiki-image-style-alignment="center" height="85" width="162"]]
	177
	178	=== J2 – jumper for switching RS-485 terminal resistor ===
	179
2.1	180	To connect the terminal resistor between the RS485_A and RS485_B lines, install the jumper J1 according to the following figure:
1.1	181
	182	[[image:1733738660910-372.png\|\|data-xwiki-image-style-alignment="center" height="85" width="162"]]
	183
	184	== Connection procedure ==
	185
	186	=== Connecting battery cells ===
	187
	188
	189	To connect battery cells, follow figure below. Incorrect connection of the cells can damage the BMS Mini.
	190
	191	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.
	192
2.1	193	[[image:1733738660912-678.png\|\|data-xwiki-image-style-alignment="center" height="326" width="650"]]
1.1	194
	195	(% class="box warningmessage" %)
	196	(((
	197	Attention!
	198	Connect the battery according to the diagram, otherwise the device may be damaged.
	199	)))
	200
	201	=== Connecting thermistors ===
	202
	203	Thermistors should be fastened to the cells, excluding short circuits to the cell terminals (for example, isolate thermistors with heat shrink).
	204
	205	[[image:1733738660915-688.png\|\|data-xwiki-image-style-alignment="center"]]
	206
	207

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