To manufacture prismatic and cylindrical battery cells, OEMs and battery manufacturers need a reliable partner like STIWA. We support our customers from the initial idea through product and process development to highly automated, production of millions of units – from automotive, smart mobility, energy storage, to industrial applications.
With our expertise, we ensure efficient solutions that guarantee the highest quality and reliable results.
There are no standard solutions for the development and production of battery cell housings. Therefore, it is crucial to have a flexible partner with the expertise and competence to cover the entire process, from development to production. An optimized cell housing design – minimizing space and complexity – plays a key role in boosting battery performance and achieving maximum energy density.
The battery housing is the central safety component that must meet the highest standards in terms of sealing, electrical conductivity, mechanical strength, and much more. It essentially consists of a battery lid / cap and a battery can – including the critical interface between these two components. High production volumes require manufacturing systems that are both flexible and highly automated to ensure constant quality and efficiency in production.
Maximum efficiency with minimum overall costs
We not only offer innovative solutions, but also long-term cost-effectiveness. Our Total Cost of Ownership (TCO) approach delivers sustainable savings. Our products and services are designed for longevity and efficiency to deliver the lowest total cost of ownership:
Requirements for battery cell housings
The requirements for battery cell housings are various and include the highest standards in terms of tightness, power transmission, mechanical stability and safety. In addition, they must be produced flexibly and efficiently in large quantities to meet the increasing market needs.
From Lab- to Gigascale
The development of battery cell housings requires the fulfillment of numerous, sometimes contradictory, functional, safety and manufacturing-specific requirements. This is a demanding task that requires a partner who competently accompanies and supports the entire process from the initial idea to the final serial production.
BURSTING BEHAVIOR
Controlled discharge of gases and electrolyte in the event of a thermal runway or crash
SAFETY
Adherence to standards regarding cleanliness, safety integrity and power line
TIGHTNESS AND ELECTROLYTE RESISTANCE
Innovative sealing concepts adapted to cell chemistry
MANUFACTURABILITY
Design-for-manufacturing, high-performance automation and 100% in-line testing
HEAT GENERATION
Optimum heat dissipation via the cell housing and use of innovative materials
FILLABILITY
Optimal interface for leak-free, efficient electrolyte filling of the battery cell
JOINABILITY AND WELDABILITY
New materials require innovative technologies (e.g. aluminum/copper composite)
ISOLATION AND CONDUCTIVITY
Ensure optimum power transmission and precise design of the insulating and conductive components
MECHANICAL LOAD CAPACITY
Cells must withstand enormous mechanical loads and increase system rigidity
STIWA competencies
STIWA combines high-precision manufacturing, innovative materials and advanced automation. From stamped and plastic parts to safety and sealing solutions to complex interfaces – we develop and produce tailor-made solutions for the highest requirements.
High precision bursting valves
Design and manufacture of integrated and separate bursting valves with highest tolerances and repeatability
Lid / cup interface
Thanks to our in-house automation, we are familiar with complex interfaces: We think the cell housing holistically and develop both the optimal interface and the appropriate automation solution for component assembly.
High precision stamped parts
In-house, state-of-the-art punching center with its own tool construction to produce steel, aluminum and copper components according to the highest quality standards
High precision stamped parts
In-house, state-of-the-art punching center with its own tool construction to produce steel, aluminum and copper components according to the highest quality standards
Customized sealing solutions
Working with leading seal manufacturers to develop tailor-made solutions, perfectly matched to the specifications and chemistry of the battery cell
Innovative plastic parts
In-house, state-of-the-art plastics center with its own toolmaking for injection and overmolded components – specializing in plastics for the battery industry
High precision stamped parts
In-house, state-of-the-art punching center with its own tool construction to produce steel, aluminum and copper components according to the highest quality standards
Innovative plastic parts
In-house, state-of-the-art plastics center with its own toolmaking for injection and overmolded components – specializing in plastics for the battery industry
Customized sealing solutions
Working with leading seal manufacturers to develop tailor-made solutions, perfectly matched to the specifications and chemistry of the battery cell
High precision stamped parts
In-house, state-of-the-art punching center with its own tool construction to produce steel, aluminum and copper components according to the highest quality standards
High precision stamped parts
In-house, state-of-the-art punching center with its own tool construction to produce steel, aluminum and copper components according to the highest quality standards
High precision stamped parts
In-house, state-of-the-art punching center with its own tool construction to produce steel, aluminum and copper components according to the highest quality standards
Aluminum / copper connection
We develop innovative processes and solutions for the critical aluminium-copper joints, always with the aim of reducing costs and installation space. At the same time, we promote sustainability by using less raw material.
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What distinguishes us -
a global partner network across the entire value chain
Research & Development
We maintain close cooperation with leading research institutes in the field of battery technology, both in basic research and in the development of innovative solutions. This allows us to always integrate the latest knowledge into our products and processes.
Suppliers
NSustainability and costs are at the focus of our supply chain strategy. We work with suppliers who use sustainable materials such as recycled aluminum, copper and plastics. Our goal is to make the entire value chain more efficient and resource efficient.
Partners
Thanks to close partnerships with cell cup manufacturers, seal and electrolyte manufacturers, we offer our customers tailor-made solutions from a single source. This collaboration enables us to optimally meet the needs of our customers and achieve the best results.
Customers
Our long-standing customer relationships and the joint development of new projects create a continuous feedback loop. This allows us to constantly develop further and ensure that we always offer innovative and market-oriented solutions.
STIWA’s high degree of vertical integration
From the first idea to the series: With state-of-the-art development, in-house prototype production and highly automated production, we create precise, efficient and future-proof solutions – everything under one roof.
Our over 50-strong development team covers all aspects of product and process development – from mechanical to mechatronic development. By combining state-of-the-art analysis methods and practical testing options, we ensure maximum efficiency and innovative solutions.
In our state-of-the-art prototype environment, which is fully operated in a clean room, all the necessary technologies are available to develop, produce and test battery cell housings. Here, for example, we carry out leak tests, burst tests, stress tests and resistance tests and can carry out up to several thousand pieces per week.
The production of individual parts, from punched parts to plastics and machined components, is carried out directly at STIWA in-house. Thanks to our high degree of vertical integration, we gain a deep understanding of the interrelationships between the components and can react with maximum flexibility to product optimizations and changes.
Thanks to the highly automated solutions of our sister company STIWA-Automation, we achieve the fastest cycle times and ensure the lowest total costs as well as the highest quality through 100% in-line testing.
In order to ensure that our products meet the highest quality standards, we offer all relevant in-house testing procedures. From cleanliness analyzes and material tests to mechanical service life tests, we cover the entire range.
Our goal is not only to develop solutions for today's needs, but also to create forward-looking innovations that give our customers a decisive competitive advantage in a dynamic market.
STIWA automation line
From the first production stage to the final assembly group, we focus on the highest quality standards, maximum flexibility and cleanliness. Our processes guarantee precision, scalability and efficiency – perfectly matched to the requirements of the battery industry.
Oliver Schwarz
Business Development Battery
STIWA Advanced Products