Case study charging station

Charging ahead

Advanced materials for the plug-in vehicle charging infrastructure

Through the use of new impact resistant and ultraviolet-stable materials, Covestro is helping to "fuel” the electric transportation industry.

Supplier: Coulomb Technologies
Industry: Electrical
Application: ChargePoint® Networked Charging Stations
Product: Makrolon® 6557; Makrolon® 6487

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With the electric vehicle market picking up speed, charging stations must be readily available for consumer use. These stations are typically located outdoors, where they are exposed to the elements and the general public, leaving them vulnerable to vandalism, as well as damage from ultraviolet exposure and inclement weather. Manufacturers need a durable, weatherable and cost-effective material to help keep charging stations operational despite conditions that are sometimes less than ideal.

Coulomb Technologies selected Covestro as its supplier of choice to protect the “brains” of its ChargePoint® Networked Charging Stations. The station utilizes several polycarbonate resins from Covestro including Makrolon® 6557 polycarbonate for the display. This resin offers the appearance of glass, impact strength and moldability, making it ideal for demanding optical and electrical applications. The piece that covers the top of the charging station is a black plastic cap made of Makrolon® 6487 polycarbonate. Coulomb engineers vigorously tested the durability of this component, and found it met or exceeded every specification.

“Covestro helped us select the appropriate materials that have increased the durability and overall design of our charging stations,” said Tony Vastola, senior manufacturing engineer, Coulomb Technologies. ”I can’t imagine anything stronger for our product.”

The main properties of Makrolon® 6557 polycarbonate are:
High impact strength

The main properties of Makrolon® 6487 polycarbonate are:
Impact resistance even at low temperature
Moldability and Scalabilty
Design freedom

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