4-15S 40A smart bms for lithium ion battery

This BMS (Battery Management System) is mainly designed for 4–15 series ternary lithium and lithium iron phosphate (LiFePO4) battery types, primarily applied in new national standard batteries. By collecting key parameters of the battery pack in real time—such as voltage, current, and temperature—and integrating the mandatory requirements of the new national standard for thermal runaway early warning, mechanical protection, and charging/discharging safety, it establishes a multi-layered safety protection logic.

The system not only monitors and collects battery status parameters in real time (including the voltage of individual cells, pack terminal voltage, battery temperature, SOC & SOH, etc.) but also performs the necessary analysis and calculations on these data to obtain more comprehensive system evaluation parameters. Based on specific protection and control strategies, it effectively manages the battery to ensure safe operation. At the same time, it features balancing functionality to maximize cell consistency during use, slowing down battery degradation and reducing the loss of driving range.

In addition, the BMS also fulfills the compliance requirements of the new national standard by recording and tracing operational data. Through storing battery operating conditions, fault information, and safety event logs, it provides standardized data support for type certification, production consistency checks, and after-sales quality traceability—becoming the crucial technological bridge between the battery itself and the requirements of the new national standard.

Function

• · Supports battery packs with 4–15 cells in series.
• · Real-time monitoring of cell voltage, pack voltage, current, and temperatures (cell, ambient, and MOSFET).
• · Comprehensive protections: cell over/under-voltage, pack over/under-voltage, charge/discharge overcurrent, high/low cell temperature, MOSFET over-temperature, and short-circuit protection.
• · Passive balancing to equalize unbalanced cells. Balancing start voltage and voltage delta can be configured via a mobile mini-app or host/PC software.
• · Current integration (coulomb counting), including:
  • A. Charge and discharge current measurement.
  • B. Battery capacity estimation.
  • C. Charge/discharge cycle counting.
• · SOC measurement: combines coulomb counting with an open-circuit voltage (OCV) algorithm.
• · Multiple sleep and wake methods.
• · Low-voltage shutdown to prevent battery damage.

Specification

Dimension and Details

A Large Number of Spot, Offered at Highly Competitive Prices

This 4-15S 40A with Bluetooth BMS is available in stock, offering fast delivery, competitive pricing, and direct manufacturer supply. It supports both small sample orders and large-volume purchases and is highly popular in India, Australia, Vietnam, and the Southeast Asian market.