Battery Management System which is shortly known as BMS is an electronics circuit which is used to control the safe operation of the battery. It protects the battery pack from being over-charged (cell voltages going too high) or over-discharged (cell voltages going too low) thereby extending the life of the battery pack. Melasta offer the designing service for customized BMS. These are the main features of customized BMS design. 

Main Features of Customized BMS

Few Models without Communication Protocol

Few Models with Communication Protocol

Technical Parameters

This standard describes the size, characteristics, technical requirements and matters of PCM for 6~16 series. These parameters are for a customized project.

PCM Test Environment

Temperature： 15～35℃

Relative humidity： 45～75% RH

Atmospheric pressure： 86～106 KPa

Measure Instrument Request

Voltage meter request:The accuracy of the measuring instrument is not less than 0.5. The resistance is not less than 10KW/V

Current meter request:  The accuracy of the measuring instrument is not less than 0.5

Time meter request:  The accuracy of the measuring instrument is not less than 0.1%

Temperature meter request:  The accuracy of the measuring instrument is not less than 0.5℃

No.	Item	Min.	Typical Value	Max	Unit	Note
1	Number Of Series	6	~	16	series	Software adjustments
2	Charging Current	—	150		A	Continuous
3	Discharging Current	—	150		A	Continuous
4	Monomer Overvoltage	4200	4250	4300	mV	The first level (adjustable parameters)
	Reaction Time	1	2	3	S
	Recovery	4050	­4100	4150	mV
	Monomer Overvoltage2	_	4450	4600	mV	The second level (adjustable parameters)
	Reaction Time		1000	1250	mS
	Recovery	Software delete
5	Monomer Under Voltage	2750	2800	2850	mV	The first level (adjustable parameters)
	Reaction Time	1	2	3	S
	Recovery	3350	3400	3450	mV
	Cell Voltage	2000	2000	2100	mV	The second level (adjustable parameters)
	Reaction Time	100	—	1000	mS
	Recovery	Software delete
6	Short Circuit Protection	When positive and negative resistance is less than 50mΩ, It is short-circuit
	Recovery	remove load 6-10S
7	Over Charging Current Protection	150	160	170	A	Adjustable parameters
	Reaction Time	3	4	—	S
	Recovery	Automatic recovery after 8S
8	Over Discharging Current Protection 1	150	160	170	A	The first level (Adjust parameters)
	Reaction Time	—	5	—	S
	Recovery	Recovery: Automatic recovery after 4S
	Over Discharging Current Protection	180	200	220	A	(The second level (Adjustable parameters)
	Reaction Time	500	——	1000	mS
	Recovery	software delete
9	Charging Over-Temperature Protection	53	55	80	℃	Adjustable parameters
	Recovery Temperature	37	40	43	℃
10	Discharging Over-Temperature Protection	57	60	63	℃	Adjustable parameters
	Recovery Temperature	37	40	43	℃
11	Battery Balance	-	41	82mA	mA	Adopting differential pressure method
12	Storage Temperature And Humidity Range	-20℃ to 35℃,(45-85%RH) within one year				60%～70%。During storage, battery should charge every three weeks, charge capacity is 60%～70%
		-20℃ to 40℃,(45-85%RH) within 6 months
		Within 3 months:-20℃ to 45℃,(45-85%RH)
		Within one week:20℃ to 50℃,(45-85%RH)
13	Quiescently Current Consumption	——	——	30	mA	PCM current consumption
	Sleep Current		0.15	1	mA
14	Weight		120		g	No wires
15	Working Environment Temperature	-40	25	85	℃	Humidity: max: 85%rh
16	Communication Port	CANBus、RS485 SMbus				Communication format, as the content of communications