Active Balancing HV BMS Components

Protection & Smart Functions

• Supports 3S-256S battery systems with maximum system voltage up to 1000V
• Supports 20-900A continuous current and peak current up to 3 × continuous current
• 1-2A active balancing for improved cell consistency
• Overcharge and over-discharge voltage protection
• High-temperature and low-temperature protection
• Overcurrent and short-circuit protection
• Two-level configurable protection for voltage, current and temperature
• mV-level voltage detection and mA-level current detection
• Millisecond-level protection response
• 400 rolling event and warning records for historical fault analysis
• Bluetooth connectivity for iOS and Android
• 14-language APP with battery voltage, temperature, current, capacity monitoring and parameter settings
• Manual, automatic and deep sleep modes
• Deep sleep with 0 power consumption
• Heating function supported across the full series
• Supports initial power-on activation, charging activation and load activation after sleep
• Supports 2.0-inch and 4.3-inch display expansion
• Supports inverter communication
• Supports GPS tracking and 2G / 3G / 4G remote connectivity
• Supports Wi-Fi module expansion

Main Applications

• Residential Energy Storage
• Commercial & Industrial Energy Storage
• Large Yacht & Marine Energy Storage
• Racing Boats
• Sightseeing Vehicles
• Special-Purpose Electric Vehicles
• Construction & Material Handling Equipment
• Electric Forklifts
• High-Power Battery Systems
• Not Intended for Engine-Starting Battery Applications

Core Technology

• Master-Slave Cascaded Architecture

  A master controller with multiple slave modules provides segmented management and scalable expansion for large high-voltage battery systems.

• High-Voltage Platform up to 1000V

  Supports large-scale energy storage and high-voltage power battery systems with system voltage up to approximately 1000V.

• Modular Distributed Management

  Each slave module independently manages its battery section for easier system expansion and fault localization.

• Independent Pre-Charge Control

  A dedicated pre-charge relay and resistor reduce inrush current during high-voltage system startup.

• Real-Time Pre-Charge Detection

  Pre-charge status is evaluated through load-side voltage changes instead of relying only on a fixed time delay.

• Dual-Side Voltage Detection

  Battery-side total voltage and load-side voltage are monitored simultaneously for more reliable high-voltage system status detection.

• Centralized High-Voltage Circuit Control

  The master controller manages pre-charge, charge and discharge relays together with overall system operating logic.

• Shunt-Based Current Measurement

  An external shunt can be selected according to the actual current requirements of the battery system.

• Time-Division Balancing and Sampling

  Balancing and voltage sampling operate separately to reduce measurement interference caused by balancing current.

• Segmented Temperature Monitoring

  Temperature monitoring across different battery sections enables multi-zone thermal management for large battery packs.

• 1mV Cell Voltage Resolution

  Individual cells are independently monitored with voltage measurement resolution down to 1mV.

• Multi-Level Fault Response

  Different fault conditions can trigger alarms, charging shutdown, discharging shutdown or high-voltage circuit disconnection.

• Hardware-Software Coordinated Protection

  Software protection logic works together with high-voltage relay control to manage and isolate the power circuit when required.

• Flexible Component-Level Integration

  Master modules, slave modules, relays, shunts and pre-charge components can be supplied separately for customized system integration.

• Integrated PDU / High-Voltage Box Solution

  A pre-integrated high-voltage control box reduces component selection, wiring and assembly work for system integrators.

• Highly Configurable High-Voltage System

  Series count, voltage, current, relays, shunts and pre-charge configurations can be tailored to specific project requirements.

• Multi-Chemistry Battery Compatibility

  System parameters can be configured for different battery chemistries to support a wide range of high-voltage battery projects.