TÜV Rheinland has taken a close look at the latest battery storage system series from Tesvolt. The high voltage storage systems TS HV 30 E, TS HV 50 E and TS HV 80 E passed the safety tests. Tesvolt is one of the few manufacturers on the market that can verify the safety of its energy storage systems for commerce and industry with certification from the independent testing institute. The IEC 62619 certification confirms both the electrical and functional safety of Tesvolt’s products. The company produces intelligent lithium energy storage systems with power ratings from 10 kilowatt hours to multiple megawatt hours. It manufactures its energy storage system solutions in series production at its own carbon-neutral gigafactory at Lutherstadt Wittenberg in Germany and delivers them worldwide.
Certification from TÜV Rheinland confirms the safety of Tesvolt’s energy storage systems for commerce and industry.
Roman Brück, Head of the Components, Power Electronics and Certification Department at TÜV Rheinland notes: “Product safety testing is not yet a matter of course in the storage system industry. Numerous manufacturers economise with regard to certificates and more comprehensive safety testing. He adds that Tesvolt, however, takes the subject of safety very seriously. “We were involved from the start of development and looked closely at the new storage system series – in addition to testing functional and electrical safety, we carried out fire tests, abuse tests and combination tests which check the interaction of the individual components.”
Simon Schandert, co-founder and CTO at Tesvolt says, “I think all companies are under pressure to optimise their costs. Globalisation and the current economic situation have certainly played a part in this. With the rapidly increasing number of manufacturers, particularly from China, there are some who make cutbacks in areas where it is not immediately noticeable. For example, regarding voluntary certification and testing or in the quality and durability of individual components. However, safety must always be given top priority.”
Tesvolt, together with other quality manufacturers in bodies such as the German Energy Storage Systems Association (BVES), is therefore campaigning for additional certification and testing to be made mandatory for all manufacturers.
Multi-stage safety concept
Tesvolt pursues a multi-stage safety concept. The company carries out partially automated complete cyclic conditioning at its production site: Every battery module is fully charged and discharged and tested for any irregularities with regard to temperature, voltage and internal resistance. Further, fully automated end-of-line inspections ensure maximum safety, with every battery cell tested and less efficient battery modules automatically removed.
All Tesvolt energy storage systems are also designed with multiple built-in safety features. The battery cells are subject to six safety mechanisms. For example, a safety fuse will interrupt the electrical current if the unit experiences a short circuit or overcurrent. In the event of excess pressure, a safety valve on the cell opens in order to ensure pressure compensation takes place. A sturdy aluminium housing protects every cell from mechanical damage.
Tesvolt’s A and E series battery storage systems are tested in accordance with the international IEC standards: 62619, 62620, 61000, 61010, 61508 and UN38.3. The company is also certified in accordance with ISO 9001:2015 for the successful implementation of quality management in its operations.
The TS HV 30-80 E series battery storage systems are certified for all European countries. Certification for the UK is expected to follow in the first quarter of 2024.
For more information visit: www.tesvolt.com/en/
