Battery Management System

The Orion BMS is a full featured lithium ion battery management system that is specifically designed to meet the tough requirements of protecting and managing battery packs for electric vehicles (EV), plug-in hybrid (PHEV) and hybrid vehicles (HEV) with automotive grade quality.

Robust and EMI Resistant

The Orion li-ion BMS has high immunity to harsh EMI (electrical noise) and voltage transients found in automotive environments that plague other BMS systems.

Applicable Everywhere

In addition to automotive uses in electric and hybrid vehicles, the Orion BMS can also be used in stationary installations such as solar or wind storage batteries and UPS systems.

Current & Voltage Protection
Protects the battery pack from over-charge and over-discharge thereby extending cycle life
Health Monitoring
Monitors internal resistance of individual cells and the measured capacity of the battery pack
Thermal Management
Over-temperature and under-temperature protection with fan controls for cooling or heating
State of Charge Monitoring With Drift
Coulomb counting and dynamic drift correction are used to monitor the state of charge
  Digital & Analog Output Controls
Provides multiple methods of controlling chargers, motor controllers and other external devices
Compatible With Almost All Li-Ion Batteries
A wide cell voltage range supports almost all lithium ion batteries and even some NiMH batteries
Intelligent Cell Balancing
Efficient passive balancing is used to maximize the usable capacity of battery packs
  Field Programmable
Parameters such as voltage ranges, current limits and many other settings are easily field changeable.
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Automotive Grade Electrical Noise Immunity
Durable centralized design provides a high level of EMI (noise) immunity
Dual Programmable CAN Interfaces
Fully programmable CAN messages on 2 interfaces allow integration with virtually any CAN enabled device
Advanced Isolation Fault Detection
Actively detects breakdowns in isolation between the battery and chassis
OBD-II Support, Trouble Codes & Freeze Frame
When faults occur a snapshot of parameters is stored for analysis and can be read by OBD-II scan tools
Intelligent Current Limit Calculations
Constantly calculates preemptive maximum discharge & charge current limits
Hybrid, PHEV & Electric Vehicles (EV) Features
The Orion BMS is designed with specific features for a variety of plug-in vehicles.
Software For Data Logging & Programming
Software provided with the BMS can be used to program the BMS as well as view, log and analyze data
Programmable Thermal Compensation
Programmable thermal compensation provides SOC and current limit compensation at various temperatures
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Features Applications
  • Designed specifically for high EMI immunity
  • Low power sleep mode
  • Redundant design for improved reliability
  • Highly programmable / flexible
  • Electric Vehicles (EV)
  • Plugin Hybrid Vehicles (PHEV)
  • Hybrid Vehicles (HEV)
  • Solar / Wind Energy Storage Systems
  • Battery Backup Systems
  • Racing Vehicles


Electrical Specification Item Min Typ Max Units
Nominal Supply Voltage 10 16 Vdc
Supply Current – Active * 250 mA
Supply Current – Sleep (Rev C) * 650 uA
Operating Temperature -40 80 C
Cell Voltage Measuring Range 0.5 5.0 mS
Number of Cells Supported In Series 4 180 cells

* See full spec sheet for all specs and test conditions.