Battery cell caps
Energized for tomorrow's mobility
The right cap for your cell
From the raw material to the ready-to-install product: We are your expert in manufacturing battery cell caps for high-powered battery systems and supply our customers from our facility in Chemnitz, Germany.
The safe closure for the battery cell
The battery cell cap
Battery cells are manufactured in prismatic, cylindrical and pouch form factors. Prismatic battery cells are one of the most common forms of lithium-ion batteries and, due to their design, are often used for traction batteries in electric vehicles. The battery cell caps protects the cell elements and isolates the components inside the battery cell from external influences. It integrates critical safety functions and interfaces.
The complex production requires a sequence of precise welding processes, exact assembly steps and intelligent, in-process testing. The precise implementation of multi-material connections, which require the integration of different materials such as aluminum, copper, plastics and foils, is necessary to create a product that can be installed.
We take care of the entire process for our customers, from procurement and assembly on specially designed automated production lines to quality control and delivery of the products.
Welding and testing processes
Advantage through powerful performance
We focus on the highest precision and quality in our battery cell cap manufacturing process. Our expertise in laser welding is the key to the outstanding functionality of the battery cell component.
Current collector:
A resistance-optimized connection between the current collector and the external interfaces is essential for the battery cell functionality. Our customized laser welding processes create a media-tight connection between the individual components and ensure a smooth performance during the operation. For that reason, the core functions are 100% process controlled.
Burst valve:
To ensure product safety even in critical situations, the burst valve provides a controlled release of gases and pressures. We use laser welding to join this safety component to the battery cell housing and test it for proper function in a subsequent leak and burst test.
Excellence in production
Optimized welded joints
Leak testing and burst
pressure control
Coordinated multi-metal compounds
100% contact resistance measurement
Assembly processes
Advantage through precision
The assembly process completes the production of the battery cell caps. After welding and testing, we ensure that each component is integrated with precise fit and position. This precision is essential for an optimal product performance and reliability.
To warrant that every step of our assembly process meets the highest standards, we carry out a final quality check. Only components that meet our strict criteria leave our production facilities.
Excellence in every detail
Automated production
Exact
assembly
Minimal
cycle times
Cost-efficient
process
Our services
High performance safely under lock and key
For years, we have been working intensively on the development of efficient laser processes and innovative assembly technologies with integrated inspection concepts. With our extensive expertise, we are successfully implementing the production of novel battery cell components.
Long-time experience
+25 years: Development of automated assembly lines
+20 years: Series production of complex assemblies
Takeover of operational processes
Our support ranges from the sourcing and procurement of raw materials to the optimization of logistics processes and supply chain management for our customers. Trusting cooperations with long-standing partners are building the foundation for this.
Growing strategically
The setup of an independent European battery cell production requires enormous production capacities. With our innovative system technology, we support our customers in successfully realizing their demands.