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The Battery Show North America 2026German Exhibitors Sonplas GmbH

Sonplas GmbH

Booth number: 4027
www.sonplas.com/

About us

Sonplas is a special-purpose machinery manufacturer headquartered in Straubing, Germany. Since its founding in 1993, the company has experienced continuous growth and today employs more than 400 people. In line with the motto “For your success,” Sonplas specializes in the development of flexible and scalable special-purpose machines for processing, assembly, and testing applications. These systems can be complemented with external technologies based on customer-specific requirements.

Over the years, the portfolio has consistently grown, and the special-purpose machine manufacturer now provides solutions for various fields, including electromobility, battery cell production, hydrogen technology, hydroerosive machining, fuel injection (diesel, petrol, alternative fuels), and aerospace technology. To date, the company has delivered over 1,000 special-purpose machines worldwide to renowned customers in the automotive, automotive supply, commercial vehicle, and aerospace industries.

With its in-house research and development department, Sonplas continuously meets the latest technological and market requirements. In addition, through service partners worldwide and a subsidiary in the USA – Sonplas USA Inc. – the company ensures expert local support and on-site spare parts availability.

What sets Sonplas apart? Sonplas stands for in-depth expertise and comprehensive process know-how. The company acts both as a system integrator and as a general contractor, delivering customized solutions of the highest quality to its customers.

Since mid-2026, Sturm Surface Technology has been part of the Sonplas Group, expanding its portfolio to include surface technology. The two companies complement each other perfectly: Sonplas contributes its expertise in automation and testing technology, while Sturm Surface Technology adds expertise in thermal coating, painting technology, and surface measurement.


Address

Sonplas GmbH
Sachsenring 57
94315 Straubing
Germany

E-mail: info@sonplas.de
Phone:  +49 9421 92750
Internet: www.sonplas.com/
Sonplas USA Inc.
150 N Michigan Ave
35th Floor
60601 Chicago, IL
United States

E-mail: info@sonplas.com
Phone:  +1 440 478 9662
Internet: www.sonplas.com/

Contact person:

Luca Schmerbeck
Sales & Product Manager Battery/Laser cutting
E-mail: l.schmerbeck@sonplas.de
Phone: +49 9421 9275 417

Anton Lettl
Sales Electronics/Power electronics
E-mail: a.lettl@sonplas.de
Phone: +49 9421 9275 852

Products & Services

Cell Assembly Machines and Equipment
Electrode Manufacturing Machines and Equipment
Module and Battery Pack Production Machines and Equipment
Other Manufacturing Equipment
Slitter, Cutter, Stamping Equipment
  • Manufacturing of customized machines, development of machines refers to customer specifications: from stations for laboratory to stations or lines for high capacity (semi-auto, fully automated with complex robot processes)

  • Assembly of power electronics with processes: screwing, dispensing, laser welding busbars, handling in cover/housing of product, labeling or laser application e.g. DMC, press-fit technology, combined with cleaning processes (for ISO 14644-1 classification)

  • Testing of power electronics with processes: leak-tightness test, EOL, HV-/Iso-Test, Function tests, AOI check, combined with various simulations of real environments (e.g. active loading)

  • Assembly and test of battery module/pack: high-speed cell stacking, adhesive and bonding applications, ATEX 2K bonding, Laser welding, BOL test, EOL test, 3D AOI check

  • Laser cutting roll-to-roll (notching/slitting) and roll-to-sheet of various battery materials

  • High-speed coating of prismatic cells

Testing Technology for Power Electronics

Power electronic components require both efficient assembly and safe, reproducible testing. Based on our experience in testing complex systems, we develop customized solutions for reliable quality assurance throughout the entire production process.

Our test systems cover a wide range of applications, including EOL testing, functional testing, leak testing, flashing, communication testing, run-in & burn-in testing, as well as various simulations, including active-load simulations. Using our in-house equipment, including the equipment available in our electronics laboratory, we can develop the test bench software as early as the assembly phase of the stations. The equipment is designed to be flexible enough to perform the required tests as well. This helps to shorten project lead times.

In close cooperation with our customers, we identify potential for optimization at an early stage. Failure analyses, process adjustments, and validation activities can also be carried out in our electronics laboratory without affecting ongoing production.

Another important aspect is the in-house development of electrical contacting solutions for our test systems. Depending on customer requirements, these are developed by our engineering team and manufactured at Sonplas. This provides additional flexibility for individual projects.

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Solutions for Battery Production

We develop customized solutions for battery production across the entire value chain. For laser processing of cathode and anode materials, our systems enable precise notching, slitting, and singulation with clean, burr-free cutting edges. They can be integrated flexibly and reliably into existing production lines.

We design scalable systems for the precise assembly of battery modules and packs, tailored to individual production requirements and capacity needs.

Our test systems ensure the quality and performance of cells, modules, and packs throughout the production process. The portfolio ranges from production-integrated end-of-line testing to performance, safety, and endurance testing under defined conditions.

By combining precise manufacturing, scalable assembly, and reliable testing, we support the development and production of high-performance, safe, and economically viable battery systems.

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Laser Cutting in Converting

Laser cutting in the converting industry enables the highly precise and cost-effective processing of sheet-like materials such as films, metals, plastics, and textiles. Sonplas’ innovative laser cutting systems produce precise, burr-free cut edges – contact-free, without tool wear or material deformation. The technology is used in applications such as fuel cells and printed electronics as well as metalworking, the plastics and textile industries, the paper and solar sectors. Our laser systems enable customized notching, slitting, and separation processes – automated, efficient, and at the highest quality level.

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Assembly Solutions for Power Electronics

We develop customer-specific assembly systems for power electronics – from prototype production to fully automated, high-volume series production. From the beginning, we consider all relevant requirements, including product design, production volumes, and the desired level of automation.

This includes various assembly processes such as screwing, dispensing, press-fit, and laser welding of busbars, as well as packaging processes including labeling and laser applications. Depending on the customer’s requirements, these processes are integrated into the respective systems.

Depending on the required production volume, our systems typically achieve cycle times between 20 and 300 seconds. Other cycle times can also be implemented to meet individual production requirements.

We take responsibility for the entire project – from initial planning and system development through implementation and production launch. With our experience in power electronics, we support our customers throughout the entire process – from the first concept to stable series production.

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