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48V 200A Lithium Battery Management System

Battery Management System

48V lithium battery BMS: 40–59V working voltage, up to 210A charge/discharge current, certified IEC62619/UL1973, offers battery protection, SOC tracking & cell balancing.

Individual pricing for large scale projects and wholesale demands is available.

Mobile/WhatsApp/Wechat: +86 156 0637 1958
Email: info@evlithium.com

Description

This product is a full-featured management system supporting 8–16 strings of lithium-ion battery packs. It offers full compatibility with 15-string and 16-string battery packs: users only need to rewire the cell sampling harness to adapt to 15S and 16S configurations, then set the string count and total voltage protection parameters via upper computer software.

The BMS integrates protection and automatic recovery functions including cell overvoltage/undervoltage, pack total overvoltage/undervoltage, charge/discharge overcurrent, over-temperature, low-temperature, and short-circuit protection. It complies with the functional safety requirements specified in IEC62619 and UL1973 certification standards.

It supports precise SOC calculation and SOH health status statistics throughout charging and discharging cycles. Cell voltage balancing is implemented both during charging and standby states. The system communicates with the upper computer via an RS485 interface, enabling parameter configuration and real-time data monitoring through human-machine interaction with dedicated host software.

Features

Ergonomic positive electrode protection solution
Unique reverse-mounted heat sink
High-precision current detection (＜±1A@100A range)
High Integration 10A current limit design, active and passive modes optional
High-precision cell voltage sampling
High compatibility pre-charging design

Electrical characteristics

Project	Min	Max	Type	Unit
Normal operating voltage	40	59	48	V
Normal charging voltage	/	60	54	V
Operating temperature range	-20	70	25	°C
Storage temperature	-40	85	25	°C
Use environment humidity	10	85	/	%
Continuous charging current	/	210	200	A
Continuous discharge current	/	210	200	A
Discharge output resistance	<2			mΩ
Normal operating power	<40			mA
Dormancy power consumption		50	0	uA

Details

Reference

details

1. Positive topology

The positive electrode topology is adopted to effectively reduce shallow charge and shallow discharge, and prolong battery life. The negative electrode of the circuit has a common ground, which reduces the interference caused by EMC and MOSFET turn-on and turn-off.

2. Current limit mode

Just a small module for current limitation. The MOS tube synchronous rectification technology is adopted for the current limiting of multiple battery packs with parallel current greater than 50A, which effectively reduces heat generation, improves efficiency, and reduces area in ess bms systems.

3. Cell compensation

In the scenario of battery series and parallel connection and high current, through cell compensation, the mis-opening of the balance caused by the internal resistance pressure difference of the busbar is reduced, and the capacity deviation is reduced. Cell voltage/capacity monitoring is more accurate, effectively extending battery life.

4. AFE sampling protection

AFE protection circuit supports the dislocation and disorder of harness sequence, the reverse of high and low sampling harness, and disconnection protection.

5. Meet various certifications

This type of 48V lithium-ion BMS has passed CE, UL, TUV, and other certifications with the battery pack, ensuring the quality and safety of the software

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