BMS (battery management system) - PCB protection circuit for a Li-ion battery cell (Made in Japan). A battery management system (BMS) is an electronic circuit that is used to monitor and regulate a rechargeable battery system. The need for a BMS arises when several battery cells are interconnected to form a battery. The BMS should detect, monitor and correct the inevitable manufacturing-related variations in various parameters of the battery cells, such as capacity and leakage currents.

Application: Li-ion battery packs

This module is made for charging rechargeable lithium batteries using the constant-current/constant-voltage (CC/CV) charging method. In addition to safely charging a lithium battery the module also provides necessary protection required by lithium batteries. See below concerning the protection features this module provides.

BMS (Battery Management System) - a battery management system that is designed to monitor the status of batteries, control the process of charging / discharging the battery, etc.

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Applications
Benefits
Very Low RDS(on) at 4.5V VGS
Ultra-Low Gate Impedance
Fully Characterized Avalanche Voltage
and Current
Lead-Free

Advanced HEXFET® Power MOSFETs from International Rectifier utilize advanced processing techniques to achieve extremely low on-resistance per silicon area. This benefit, combined with the fast switching speed and ruggedized device design that HEXFET power MOSFETs are well known for, provides the designer with an extremely efficient and reliable device for use in a wide variety of applications.

PCF8591 key performance indicators:

Features:

Feature:

The DC-DC Adjustable Step Down Converter Module has large power, high efficiency, low-ripple. With power indicator, on-board voltmeter. The voltmeter can calibrate automatically. The measure can be changed between input and output voltage, with indicator. The voltmeter can also be shutdown. The board uses connection terminal for easy wiring.
Built in thermal shutdown function
Built in current limit function
Built in output short protection function

Specification: