From the city bus to the store: Second life for Mercedes batteries

From the city bus to the store: Second life for Mercedes batteries-second

Daimler Buses wants to give the batteries from his city buses a second life. The company therefore takes as an associated partner on the model project GUW + part, it says in a message. In a new rectifier amperson of the ustra Verkehrsbetriebe Hannover, a stationary energy storage based on battery systems is to be used, which were previously used in fully electrically powered Ecitaro city buses. Development and implementation of the project therefore takes over Mercedes-Benz Energy in the Saxon Kamenz.

“Environmental and resource conservation is the main argument for our electrically powered city bus Ecitaro,” says Gustav’s showers, development chief at Daimler Buses: “We checked it thoroughly: His CO2 footprint is considerably cheaper over its long life than that of conventional Powered city buses. The further use of its batteries improves the life cycle assessment.”

Holger Elix, Head of Infrastructure at the ustra explains another aspect: The cost of electric cusses was a special challenge. The stationary reuse of the batteries within the traffic operation improve the amortization and could further speed up the electrification of public transport.

Batteries take a key role in the environmental balance of E-vehicles. Earlier or later, your capacity is noticeable. This is no different with electrically powered city buses. This is the use time of the batteries with NMC technology in Ecitaro after about five to six years in a capacity of about 80 percent. After that, the necessary reach of the city buses is no longer guaranteed, it says at Mercedes-Benz.

The life cycle of a battery is not inevitably after the operation in a vehicle. In stationary operation, it is usually still fully operational – capacity losses play only a minor role here. Such use is still possible for several more years and thus expands economic benefits such as environmental balance sheet.

From the fourth quarter of 2021, the new rectifier subwerk in Hanover is intended to contribute to the supply of urban railways and electric breads of the ustra. The energy storage should serve as a buffer for the efficient use of recuperation energy of urban railways, balancing load tips and enable further operation in a power failure. The pilot store has enterprise data on a capacity of around 500 kWh and consists of around 20 battery systems previously used over thousands of kilometers in Ecitaro for testing trips.

The extension of a classic rectifier subwriter for intelligent functions is developed and demonstrated within the framework of the joint project funded by the Federal Ministry of Transport and Infrastructure (BMVI) GUW +. The project launched in 2019 has a term of three years.

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