Materials and converting solutions for energy storage (BESS)

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Energy storage today plays a central role in the development of energy infrastructures. The growing integration of renewable energies, the stabilisation of electricity grids and the increase in demand for electricity all require systems capable of storing and redistributing energy efficiently.

The systems Battery Energy Storage System (BESS) are designed to ensure this energy flexibility. However, these systems are based on complex architectures combining batteries, electrical systems, thermal management and safety protections.

In this context, the manufacturers of BESS systems must integrate technical materials capable of providing electrical insulation, thermal management, fire protection and system reliability.

ADDEV Materials supports industrial players in energy storage by offering high-performance materials and customised converting solutions for modern BESS architectures.

Our teams are involved at all stages of product development to optimise the safety, performance and durability of energy storage systems.

BESS

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The strategic role of energy storage in the energy transition

Energy storage is becoming a key element in guaranteeing the stability and performance of modern electricity infrastructures.

BESS systems provide a response to a number of major challenges.

Integration of renewable energies

Solar and wind power installations produce intermittent energy. BESS systems therefore make it possible to store the energy produced so that it can be redistributed when demand increases.

Stabilising the electricity network

Energy operators also use energy storage to :

  • balancing electricity networks
  • limit frequency fluctuations
  • reduce peak consumption

Securing critical infrastructures

BESS systems are also used in :

  • data centres
  • industrial infrastructure
  • smart grids

In these environments, energy storage guarantees a constant supply of energy. continuity of supply and greater energy resilience.

Architecture of an energy storage system (BESS)

An industrial BESS system is made up of a number of technical sub-assemblies that must work together reliably and securely.

Container

The container forms the main envelope of the system.

It must ensure :

  • mechanical protection
  • environmental sealing
  • resistance to external conditions

The technical materials used ensure that :

  • sealing and gasketing
  • thermal insulation
  • fire protection

Cooling system

Batteries generate heat during charge and discharge cycles. BESS systems therefore incorporate cooling solutions to avoid the risk of overheating.

The associated material solutions include :

  • thermal interfaces
  • insulating foams
  • sealing materials
  • thermal management solutions

These elements help to limit the risks of thermal runaway.

Electrical equipment

The electrical equipment in a BESS system includes :

  • the Power Conversion System (PCS)
  • the Battery Management System (BMS)
  • electrical distribution systems

This equipment requires materials capable of ensuring :

  • electrical insulation
  • electromagnetic shielding
  • thermal protection

Racks

The racks house the battery modules inside the container.

They must guarantee :

  • the mechanical stability of the modules
  • thermal management
  • protection against vibrations

Battery pack

The battery pack is the heart of the energy storage system.

It groups together several modules and cells connected in series or in parallel to store and release electrical energy.

These architectures require material solutions capable of ensuring :

  • cell-to-cell isolation
  • thermal management
  • fire protection
  • mechanical retention

Battery packs & cells

Our materials make cells and battery packs safer, while improving their thermal and electrical performance.

  • lithium-ion cells
  • battery modules and packs
  • interconnections

We support converters and inverters to ensure stability, energy efficiency and component protection.

  • power converters
  • inverters
  • rectifiers

Our solutions protect control systems and guarantee the reliability of electronic circuits.

  • Battery Management System (BMS)
  • electronic cards
  • sensors and monitoring

We optimise the thermal management of installations to maintain constant performance.

  • cooling circuits
  • thermal interfaces
  • HVAC systems

Our materials provide mechanical and environmental protection for BESS systems.

  • electrical cabinets
  • BESS containers
  • protective cases

We secure electrical connections and guarantee their durability in demanding environments.

  • high-voltage cables
  • connectors
  • electrical harnesses

Where do our solutions fit into a battery energy storage system?

ADDEV Materials solutions cover all the critical areas of energy storage systems.

They optimise the performance, safety and durability of installations, from cells to complete infrastructures.

Technical functions covered by our solutions

Our materials meet the key functions required for energy storage systems.

These functions improve the reliability, safety and durability of battery energy storage systems.

Technical materials for energy storage

ADDEV Materials offers a comprehensive range of technical materials adapted to the requirements of BESS systems.

Flexible materials

Flexible materials allow for optimal integration into BESS systems while ensuring insulation and thermal management.

Examples:

  • PET polyester film
  • Polyimide films (Kapton®)
  • aramid paper (Nomex®)
  • multi-layer technical laminates
  • Graphite and metallised films

Applications :

  • Cell and module isolation
  • Battery thermal management
  • Electrical separation
  • component protection

Rigid materials

Rigid materials provide mechanical strength and enhanced thermal protection.

Examples:

  • Mica
  • ceramic panels
  • insulating composites
  • thermoformed parts

Applications :

  • fire protection
  • structural isolation
  • mechanical protection
  • thermal insulation

Liquid materials

Liquid materials allow for the protection and optimisation of critical component performance.

Examples:

  • Impregnating resins
  • Insulating varnish
  • technical meetings
  • phase change materials (PCMs)

Applications :

  • Encapsulation
  • electrical insulation
  • thermal management
  • assembly

BESS market conversion capabilities

ADDEV Materials supports industrial manufacturers with bespoke processing solutions adapted to the constraints of BESS systems.

Our processes include :

These capabilities allow for the production of components that can be directly integrated into energy storage systems.

Why choose ADDEV Materials for your BESS projects

Energy storage systems require in-depth materials expertise and mastery of industrial processes.

ADDEV Materials offers several key advantages:

Materials and market expertise

Our teams select the most suitable technical materials for the constraints of BESS architectures.

Tailor-made solutions

We develop bespoke solutions to meet the specific needs of industrial clients.

Conversion capabilities

Our technologies enable us to transform materials to produce ready-to-install components.

International presence

We support our customers on a global scale, with a strong local presence.

Technical support

Our experts assist clients from the development phases onwards to optimise system performance and security.

From technical study to industrial production

ADDEV Materials supports BESS system manufacturers at every stage of product development.

Our approach is based on several steps:

1. Analysis of technical constraints

2. Selection of suitable materials

3. Prototyping

4. Validation

5. Industrial production

FAQ — Energy Storage Materials

BESS systems use various engineering materials such as insulating films, aramid papers, technical laminates, insulating foams, and thermal management materials.

Thermal runaway can be limited through solutions such as thermal interfaces, thermal barriers, mica materials or flame-retardant films.

Polyester films, polyimide films, and aramid papers are widely used to provide electrical insulation between cells and modules.

Technical materials make it possible to improve the safety, thermal performance and durability of energy storage systems.

Developing your automotive solutions

Energy storage represents a major lever for the energy transition and the modernisation of electrical infrastructure.

Thanks to its materials expertise and industrial converting capabilities, ADDEV Materials supports BESS system manufacturers in developing high-performance and reliable solutions.