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Automotive Passive Cell balancing monitoring system

Electric Car Charging

Automotive, EV



ARM® Cortex®-M4F


PCB layer :



PCB Size:

200mm X 65mm


Electronic Components:

300+ parts


Our Offerings:

Schematic Design (Altium)
PCB Layout design (Altium)

Embedded Hardware Engineering

Embedded Firmware Engineering

Embedded Quality Engineering




Our Customer is looking for a Passive Cell balancing monitoring system for one of his Electric Car models. The client is facing various challenges such as over-voltage, Undervoltage, overcharge and discharge current, thermal runaway, and cell voltage imbalance for its Li-ion batteries. This creates cell imbalance which varies with each cell voltage in the battery pack over time.


Engibrains team designed and developed a system that included Li-ion battery Passive cell balancing with programmable channel selection, battery voltage and current sensing, Temperature monitoring, and protection for high-reliability automotive applications with 14 stacked battery cells. It can be monitored up to 60V and 80A continuous current.

Engibrains’ Role


Embedded HW Services

 – Concept feasibility & Analysis

 – Product Architecture & review

 – Schematic design

 – Layout design

 – BOM optimization

 – Component procurement, PCB Fabrication & Assembly

 – Board Bring-up and validation

Embedded SW Service

 – SW Architecture & Design

 – Driver development

 – Application firmware development

Embedded Quality Services

 – Define the Test plan

 – Identify the test cases

 – Test case execution across multiple test cycle

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