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BMS

BMS - Battery Management System

A battery management system (BMS) is an electronic system that manages a rechargeable battery (cell or pack) by monitoring its state, calculating secondary data, reporting that data, protecting the battery, controlling its environment, and/or balancing it.

What a BMS monitors

The state of the battery, item by item.

A BMS may monitor the state of the battery as represented by various items, such as:

  • Voltage: Total voltage, or voltages of individual cells.
  • Temperature: Average temperature, or temperatures of individual cells.
  • State of charge (SOC) / depth of discharge (DOD): To indicate the charge level of the battery.
  • State of health (SOH): A variously-defined measurement of the overall condition of the battery.
  • Current: Current in or out of the battery.

Project scope

Matched to your pack

BMS protection thresholds, balancing behavior, and host-communication protocols are matched to the pack configuration. Specify your pack voltage, cell chemistry, series count, current limits, and protocol in your RFQ.

BMS references

Function overview and architecture examples

Reference images migrated from the previous E Group Inc. accessory pages.

Battery management system function overview diagram
BMS function overview for system discussions.
Battery management board and pack monitoring architecture diagram
BMS architecture example; protocol and board selection are confirmed per project.

These are BMS family examples for design discussions. Protocol support and board selection are confirmed per project; standalone availability is not implied.

Start a project

Share chemistry, series count, current limits, and communication needs for a BMS review.

Share your target voltage, load profile, environment, volume, and schedule. Our team will follow up with the next technical and commercial questions.

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