High Voltage Battery Management System for Energy Storage BAU Level 3 Architecture

Diagram of Energy storage level 3 Architecture System:
Level 3 battery system architecture:First level control: BAU centrally manages the various clusters of batteries in the battery array and communicates with external PCS, UPS, EMS, airconditioning, liquid cooling, fire protection, etc;
Secondary control: BCU1~BCUmmanaging each cluster of batteries collecting cluster battery information, high-voltage control, and uploading cluster information to BAU;

Slave control:BMU1~BMUn, responsible for collecting battery voltage, temperature and other information of the battery module.

Products	Function configuration
BCU	Parameter	MinimumValue	TypicalValue	Maximum UnitValue		Description
	Power input	9	24	32	v
	Working current	180	125	130	mA
	Rated power			S3	W
	CAN BuS			3	Channel	2-wayisolation,1-way non isolation
	485 Bus			2	Channel	2-way isolation
	LAN interface (TCP/P)			1	Channel
	High edge output			8+2	Channel	2-way support for PWM output
	Switching input detection			9	Channel	solaed acise dee prosive detection, 1 -way
	Dry node output			2	Channel	Rated 2A, passive output
	Temperature detection			4	Channel	+2℃℃,-40~125°℃,supports NTC-10K,100K
	Total voltage detection channel			3	Channel	1 channel supports main and negative relayadhesion detection
	Total voltage detection range	12		1500	V	Total pressure detection error ≤ 0.3%
	Manage the rated voltage ofthe battery pack		1500		V	Rasrocltage ssoy, withstand voltage AC3100+,DC4380+
	Supports the number of BMU			40	PCS
	Detect the total	6		500	Strand	Used in
	Number of battery strings					Conjunction with BMU
	Current detection			2	Channel	Supports 1 splitter,1 Hall(supports 5v,12v), and can collect data simultaneously
	Current detection range	-1500		1500	A	Range optional
	Current detection error	0	1	1%FSR	A	Typical error 0.5% FSR, maximum error 1% FSR
	Insulation testing			15%	KΩ	0-200KΩ,error<15KΩ;>200KΩ,eror≤+15%
	BCU automatic addressing		support			lsolation type, level signal addressed
	SOC estimation error	0	3%	5%		≤5%
	SOH estimation accuracy	0	3%	10%
	SOE estimation accuracy	0	3%	5%

Products	Function configuration
BAU	Parameter	MinimumValue	TypicalValue	Maximum UnitValue		Description
	Power input	9	24	32	v
	Working current	180	200	220	mA
	Rated power			≤5	W
	CAN Bus			4	Channel	lsolation communication
	485 Bus			4	Channel	lsolation communication
	USB interface			1	Channel	Used for external data storage, default 32/64G
	LAN interface (TCP/IP)			2	Channel
	Relay drive output (RL)			4	Channel
	Dry node output (DO)			4	Channel	Rated 2A, passive dry node
	Digital Input (DlH)			2	Channel	High level detection
	Digital Input (DlL)			2	Channel	Low level detection
	Digital signal power input			1	Channel	lsolation signal detection power supply
	Supports the number of BCU			30	PCS

Products		Function configuration
BMU	Parameter	BMU16	BMU32	BMU48	BMU64
	Working voltage range	9~32V
	Working voltage range	S50mA(12V)/s25mA(24V)
	Rated power	≤0.6W
	CAN communication	1 Channel
	Number of voltage acquisitionstrings	16	32	48	64
	Temperature detection point	4	8	12	16
	Single cell detection range	0-5000mV; Exceeding the range of -0.5~6V can cause AFE damage
	Voltage acquisition accuracy	±5mV
	Temperature detection accuracy ±2°C	±2°C
	Balance function	Support, passive balancing
	Balanced number of opening routes	Every 8 channels can activate 1 channel equalization
	Digital signal power input	Max120mA,effective value 30-50mA
	Automatic address allocation	Support
	Io output	2-way dry contact, rated 2A, passive output
	Analog input detection	2-way (high edge detection)
	Bootloader	Support CAN bus burning and writing
	CAN communication	1 Channel
	Anti reverse connection of power supply	Support
	Power surge prevention	Support
	Voltage resistance	Voltage withstand AC3100+,DC4380+
	Working temperature	-40°C~85°C
	Storage temperature	-40°C~125°C
	Protection level	IP43, Not waterproof
	Humidity	<95%,No condensation
	Shock	≤5500m
	Automatic address allocation	At 10-25Hz,the amplitude is 1.2mm: At 26-500Hz,maximum 30m/S
	Drop	1.5m, 5 times in both horizontal and vertical directions, no damage to PCBA, no change in performance

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