D1000 Gen2 – Cell Management Unit (CMU)

Overview

The D1000 Gen2 Cell Management Unit (CMU) represents the next generation of distributed cell monitoring technology in Prohelion’s advanced battery management architecture. As an essential component of the D1000 Gen2 system, each CMU provides precise monitoring of up to 14 individual cell voltages and 4 temperature sensors with exceptional accuracy and enhanced balancing capabilities. Supporting up to 32 CMUs per system, the Gen2 CMU enables comprehensive monitoring of up to 448 cells and 128 temperature sensors across large-scale battery installations. With automotive-grade design, extended temperature operation, and significant improvements over Gen1 technology, the Gen2 CMU is engineered for demanding automotive, industrial, and energy storage applications requiring the highest levels of safety and reliability.

Key Features

• Enhanced Cell Monitoring: Up to 14 cell voltage measurements with 1mV accuracy at optimal conditions
• Advanced Temperature Sensing: 4 configurable temperature measurement inputs for comprehensive thermal monitoring
• High-Performance Balancing: 650mA balancing current per cell at 100% duty cycle for faster equalization
• Automotive-Grade Design: Designed for critical automotive applications
• Wide Operating Range: Extended temperature range (-40°C to +125°C) for harsh environments
• Ultra-Low Power: 2µA shutdown mode for minimal standby consumption
• Isolated Communication: Battery management daisy-chain protocol for robust data transmission
• Scalable Architecture: Support for 1-32 CMUs per system with 4-448 total cell monitoring

Gen2 Improvements Over Gen1

• Enhanced Cell Capacity: 14 cells vs 8 cells maximum monitoring capability
• Advanced Balancing Performance: 650mA vs 250mA balancing current for significantly faster cell equalization
• Increased Temperature Monitoring: 4 temperature sensors vs 2 sensors for comprehensive thermal management
• Automotive-Grade Design: Enhanced design for critical automotive applications
• Extended Environmental Rating: Expanded temperature range for automotive environmental conditions
• Improved Accuracy Range: Enhanced measurement accuracy across extended temperature ranges
• Ultra-Low Power Operation: Optimized shutdown mode for extended standby operation
• Enhanced System Scalability: Support for larger system configurations with up to 448 cells

Applications

The D1000 Gen2 CMU is designed for demanding distributed monitoring applications:

• High-voltage electric vehicle battery pack monitoring
• Automotive battery management systems requiring high safety standards
• Large-scale energy storage system cell monitoring
• Industrial battery applications with extended environmental requirements
• Grid-scale energy storage installations
• Critical applications requiring automotive-grade reliability
• Multi-chemistry battery systems with diverse thermal management needs
• Research and development of advanced battery technologies

System Integration

The Gen2 CMU integrates seamlessly within the distributed D1000 Gen2 architecture:

• D1000 Gen2 BMU: Coordinated by the master D1000 Gen2 BMU for system-wide management
• Daisy-Chain Communication: Isolated battery management protocol for reliable data transmission
• Scalable Configuration: 1-32 CMUs per system supporting 4-448 total cells
• Temperature Integration: 4 thermistor inputs per CMU for comprehensive thermal monitoring
• Harnessing Solutions: Compatible with Gen2 harnessing kits for simplified installation
• Cell Balancing Network: Coordinated balancing across all CMUs for optimal pack performance

Connector Specifications

• Cell Sense Connector: JAE Electronics MX34R32HF4T (32-pin for cell and temperature connections)
• Upper Communication Port: JAE Electronics MX34R08HF4T (8-pin for daisy-chain communication)
• Lower Communication Port: JAE Electronics MX34R08HF4T (8-pin for daisy-chain communication)
• Pin Configuration: Dedicated pins for cell voltages, thermistor inputs, and communication signals
• Mating Connectors: JAE Electronics MX34032SF1 and MX34008SF4 for field assembly

Safety & Design Standards

• Automotive-Grade Design: Engineered for critical automotive applications
• Extended Temperature Operation: -40°C to +125°C operating range for demanding environments
• Isolated Communication: Electrical isolation for enhanced safety and noise immunity
• Fault Detection: Comprehensive monitoring of sensor integrity and communication status
• Thermal Protection: Advanced temperature monitoring with multiple sensor inputs
• Environmental Protection: Designed for harsh automotive and industrial environments

Advanced Balancing Technology

• High Current Balancing: 650mA per cell for rapid equalization during charging and idle periods
• Coordinated Operation: BMU-controlled balancing strategy across all CMUs
• Thermal Management: Integrated temperature monitoring to prevent balancing overheating
• Efficiency Optimization: Intelligent duty cycle control for maximum balancing efficiency
• Cell Protection: Automatic balancing cutoff for over-temperature or fault conditions

Documentation

Comprehensive technical documentation and integration guides are available through Prohelion’s documentation portal at: docs.prohelion.com

Support

For technical support, integration assistance, or product inquiries, please visit our support portal where you can find comprehensive resources, submit support tickets, and access our knowledge base for D1000 Gen2 system integration.