BMS Technology Capability

Smart Battery Management Technology for Safe, Connected and Reliable Lithium Systems

JunPowerTech focuses on BMS technology matching for lithium battery packs, helping global partners clarify protection architecture, balancing strategy, SOC/SOH estimation, communication protocols, inverter matching and remote monitoring requirements.

Multi-Level Protection Passive / Active Balancing SOC / SOH Estimation CAN / RS485 / UART Bluetooth / Wi-Fi / 4G OTA & Data Logging Inverter Protocol Matching

Core Technology Modules

A reliable BMS is not only a protection board. It combines sensing, protection, balancing, estimation, communication and diagnostic functions to keep the battery pack safe and useful in real applications.

Multi-Level Battery Protection

Protection logic is the foundation of BMS safety, covering cell, pack and system-level fault prevention.

  • Overcharge, overdischarge and overcurrent protection.
  • Short-circuit, over-temperature and low-temperature protection.
  • Optional heating film and low-temperature charging control.
Overcharge Overcurrent Short Circuit Thermal Protection

Passive & Active Balancing

Balancing helps reduce cell inconsistency, improve usable capacity and extend battery pack life.

  • Passive balancing for standard energy storage and mobility packs.
  • Active balancing options for higher capacity utilization.
  • Suitable for LiFePO4, NMC and sodium-ion battery systems.
Passive 80–100mA Active 3A / 5A Cell Consistency

SOC / SOH Estimation

Smart BMS requires more than voltage protection. It also needs accurate battery status estimation and monitoring.

  • SOC estimation for remaining capacity display.
  • SOH tracking for long-term health and aging evaluation.
  • Cycle count, runtime status and fault data support.
SOC SOH Cycle Count Fault Status

CAN / RS485 / UART Communication

Communication capability determines whether the battery pack can work smoothly with inverters, displays, controllers and cloud systems.

  • CAN communication for inverter and energy storage systems.
  • RS485 / RS232 for monitoring and industrial integration.
  • UART and Bluetooth for compact battery applications.
CAN RS485 RS232 UART

IoT, Bluetooth, Wi-Fi & 4G Monitoring

For overseas projects, remote visibility can reduce maintenance cost and improve after-sales response speed.

  • Bluetooth app or mini program for local configuration.
  • Wi-Fi / 4G options for remote monitoring and fleet management.
  • GPS / BDS options for mobile battery applications.
Bluetooth Wi-Fi 4G GPS / BDS

Data Logging, Fault Diagnosis & OTA

Diagnostic capabilities help identify faults, reduce repeated communication and support long-term project maintenance.

  • Fault records for charge, discharge, protection and alarm events.
  • Runtime logs for battery behavior analysis.
  • Optional OTA support for remote firmware updates.
Fault Code Black Box Data Remote OTA

Typical BMS Working Architecture

A complete battery management system connects battery cells, sensors, power components, communication interfaces and external devices into one controllable safety system.

Layer 01

Cell Sensing

Collect cell voltage, pack voltage, current and temperature signals through sensing circuits and sensors.

Layer 02

Protection Logic

Analyze abnormal states and trigger charge/discharge protection when thresholds are exceeded.

Layer 03

Balancing Control

Reduce cell voltage differences with passive or active balancing strategies based on pack requirements.

Layer 04

Communication

Send battery status to inverter, charger, display, controller or cloud platform through CAN, RS485 or UART.

Layer 05

System Integration

Work with PCS, inverter, vehicle controller, robot controller or energy storage system for real application use.

Inverter and PCS Protocol Matching

For energy storage projects, matching the BMS with the inverter or PCS is often a key integration challenge. Even if both sides support CAN or RS485, protocol format, baud rate, register definition and battery status mapping must be confirmed before deployment.

  • Confirm inverter brand, model and supported battery protocol.
  • Check CAN / RS485 mode, baud rate and wiring definition.
  • Verify SOC, voltage, current, alarm and protection data mapping.
  • Support custom protocol discussion when standard protocols are not enough.

Common Technical Parameters

Technical Area Typical Options
Battery Chemistry LiFePO4 / NMC / Sodium-ion
Series Number 4S / 8S / 16S / 20S / 32S
Current Range 30A / 50A / 100A / 150A / 200A / 300A
Balancing Passive balancing / Active balancing
Communication CAN / RS485 / RS232 / UART / Bluetooth
Remote Functions Wi-Fi / 4G / GPS / OTA / Data logging
Optional Modules LCD, dry contact, heating film, buzzer, LED indicators

How We Review Technical Requirements

For technical B2B projects, a correct requirement review can prevent wrong sample selection, communication mismatch and unnecessary customization cost.

1

Battery Pack Definition

Confirm chemistry, voltage, series number, capacity, charge current, discharge current and temperature range.

2

Protection Strategy

Clarify protection thresholds, balancing type, low-temperature charging, heating film and fault response requirements.

3

Communication Matching

Check CAN, RS485, UART, Bluetooth, Wi-Fi, 4G and inverter protocol requirements before sample confirmation.

4

Sample & Validation

Prepare datasheets, wiring definition, protocol notes and testing points for customer-side validation.

Need Technical Matching for Your Battery System?

Send your battery pack parameters, inverter or controller model, communication protocol, current requirement and application scenario. We will help you clarify suitable BMS technical options.

Send Technical Requirement →