Wind turbine blade having a de-icing system

A de-icing system for a wind turbine blade comprising an aerodynamic shell body with a suction side shell part and a pressure side shell part that extends in a longitudinal direction between a root and a tip and in a transverse direction between a leading edge and a trailing edge, the de-icing system comprising:

• a number of heating layers including a first heating layer, the number of heating layers comprising electrically conductive fibres configured to extend in the longitudinal direction of the wind turbine blade along a longitudinal section of the aerodynamic shell body to provide resistive heating to the longitudinal section of the aerodynamic shell body;
• a number of metallic patches including a first metallic patch, the number of metallic patches being arranged to contact at least the first heating layer;
• and
• a conductor cable that is electrically connected to the number of metallic patches and further is configured for electrically connecting to a power source,
• wherein the electrically conductive fibres of the number of heating layers are configured for, upon receiving electrical power from the conductor cable via the number of metallic patches, supplying heat to an outer side of the wind turbine blade so as to de-ice the wind turbine blade,
• wherein a first metallic connection element is embedded between the number of heating layers and the number of metallic patches and is arranged in electrical contact with the number of metallic patches, and
• wherein the conductor cable is attached to, and electrically connected with, the first metallic connection element so as to form an electrical connection between the conductor cable and the number of metallic patches.

A wind turbine blade, comprising:

• an aerodynamic shell body with a suction side shell part and a pressure side shell part that extends in a longitudinal direction between a root and a tip and in a transverse direction between a leading edge and a trailing edge, and
• a de-icing system comprising:
• a number of heating layers including a first heating layer, the number of heating layers each comprising electrically conductive fibres configured and arranged to extend in the longitudinal direction of the wind turbine blade along a longitudinal section of the aerodynamic shell body to provide resistive heating to the longitudinal section of the aerodynamic shell body;
• a number of metallic patches including a first metallic patch, the number of metallic patches being arranged to contact at least the number of heating layers;
• and
• a conductor cable that is electrically connected to the number of metallic patches and further is configured for electrically connecting to a power source,
• wherein the electrically conductive fibres of the number of heating layers are configured for, upon receiving electrical power from the conductor cable via the number of metallic patches, supplying resistive heating to an outer side of the wind turbine blade so as to de-ice the wind turbine blade, and
• wherein at least the first metallic patch has an embedded portion and an exposed portion, the embedded portion being fully embedded within the aerodynamic shell body, and the exposed portion extending from the aerodynamic shell body, wherein the conductor cable is attached to and in electrical communication with the exposed portion.