Technology
BMDC™ — Battery Mechanical Dynamic Compression — is an innovative mechanical system designed to manage battery compression dynamically throughout the operating cycle.
By maintaining controlled pressure on the cells, BMDC™ is designed to respond to dimensional changes within the battery pack, supporting more stable operating conditions over time.
How BMDC™ works
Calibrated curvature
The compression element is formed with a defined radius of curvature to obtain the required elastic response.
Mechanical tensioning
The curved element is progressively deformed and maintained under tension against the battery pack through straps or a rigid mechanical system.
Dynamic compression
The elastic reaction of the system maintains a controlled compression force while accommodating dimensional changes within the battery pack during operation.
Why BMDC™
Battery cells can undergo dimensional changes during charge and discharge cycles. BMDC™ is designed to provide controlled compression while allowing limited movement within the battery pack.
Dynamic response
The system applies the required compression while allowing the cells to expand and contract slightly during operation.
Compact architecture
Thin elastic elements help reduce overall dimensions and added weight while keeping the mechanical structure simple.
Flexible integration
BMDC™ can be adapted to rigid battery case, strap-based configurations and different mechanical layouts.
Beyond conventional foam pads
Traditional foam pads placed between cells provide a simple preload, but their fixed compressibility can limit their ability to maintain uniform cell-face flatness as the pack changes dimension.
Conventional foam pads
Compression is generated between adjacent cells through elastic material.
Traditional PU or EVA foam pads experience uneven localized deflection, which can make it difficult to maintain consistent flatness of the cell faces during swelling (ballooning effect).
BMDC™ approach
BMDC™ shifts the compression function to calibrated mechanical elements acting at front-end of the pack level.
This allows simple insulating separators, or cooling profiles, to be used between adjacent cells instead of compression pads.
BMDC™ applies the required compression without completely restraining the cells, allowing the battery pack to respond dynamically to dimensional changes during operation.
BMDC™ THROUGH AI’S EYES 🤖
We asked AI to compare BMDC™ with conventional battery compression solutions. Here’s what it came up with.
Designed for simplicity and efficiency
BMDC™ combines mechanical simplicity, compact design, low added weight and competitive manufacturing cost.
Simple
Simple mechanical architecture with limited manufacturing complexity.
Compact
Reduced overall dimensions and easy integration into different battery pack layouts.
Lightweight
Plate-based compression elements help limit additional mass.
Cost-effective
Designed to achieve controlled compression using simple components and efficient manufacturing processes.
Intellectual Property
Patent-pending compression technology for battery packs.
BMDC™ is based on a patent-pending mechanical dynamic compression system designed to apply a controlled elastic force to battery packs through specially shaped deformable elements and dedicated tensioning solutions.
Patent Application N. 102026000023320
Filed: 05 August 2026
Technical Documentation
Explore the engineering principles behind the BMDC™ System, including dynamic compression, mechanical configurations and prototype solutions.
Developed in Bergamo, Italy
BMDC™ was developed from a practical engineering approach to battery pack compression. Our focus is on creating mechanically simple, compact and adaptable solutions that can be integrated into different battery pack architectures.
Developed by ADV-BOX S.R.L. in Italy, BMDC™ combines mechanical design, prototyping and practical testing with the goal of delivering a simple, adaptable and cost-effective compression solution.