NO20200585A1 - Limb / landing mechanism for induction charging of maritime vessels - Google Patents

Description

Description

Title: Limb/landing mechanism for induction charging of maritime

vessel.

formatted: Font: (Asian) Verdana, 10 pt, Font The purpose of the invention for complex font: Verdana, 11 pt, Bold

A problem with induction charging of maritime vessels is the vessel's movements from waves, Formatted: Normal

wind and electricity. The invention improves the charging capability of maritime vessels by enabling

for induction charging under the limb of the vessel.

Limb/landing mechanism for induction charging of maritime vessels, characterized by that

the secondary coil of the induction charger is located on the underside of the limb of the vessel, and

the charger's primary coil is placed on a wharf/other vessel. The primary coil is positioned like this

that when the vessel is moored, and the limb is lowered, the coils will stand above each other as well

correct distance for induction charging. The limb will be hinged to the vessel and

for example controlled by a hydraulic actuator. When the limb is in charging position, it is released

so that it lies against the wharf/vessel and rotates freely around the joint bearing. This makes the limb

to a small extent affected by the movement of the vessel. It will minimize the movement between the coils and

ensure efficient charging. The charging system will only be in use when the limb is down, and the coils

are in relative contact. This means that the system will be hidden from passengers and other users.

In applications where there are large movements between the vessel and the wharf/other vessel, can

the secondary coil is placed on an additional plate which is hinged on the underside of the limb.

The plate will rotate freely about the joint bearing when the limb is down and in the charging position. This will reduce

the relative movement between the coils further.

Background for the invention

The invention is based on induction charging technology used for, among other things, electric cars and

buses described in the patent: WO2017165549A1. There are also induction chargers for ferries

which is located on the side of the hull. This article describes various technologies and

challenges in induction charging of ferries: DOI: 10.1109/MELE.2017.2718829

By placing the charger's primary and secondary coils on the pier and underside of the

limb of the vessel, the impact of the vessel's movement on the charging process is minimised.

This improves the process.

Short summary

Limb/landing mechanism for induction charging of maritime vessels, characterized by that

the induction charger's secondary coil (3) is located on the underside of the limb (7) of the vessel

(1), and the charger's primary coil (4) is placed on a wharf/other vessel (2). The primary coil

is positioned so that when the vessel is moored, and the limb is lowered, the coils will be above

each other with the correct distance for induction charging.

Brief description of drawings:

Figure No. Description

1 Overview figure of limb/landing mechanism - limb in initial position

2 Overview figure of limb/landing mechanism - limb in charging position

3 Detailed figure of limb/gangway mechanism with extra plate

Numbering on figure Description

1 Vessel

2 Wharf

3 Secondary coil

4 Primary coil

5 Mooring hook

6 Thinning bar - Quay

7 Limb

8 Extra plate, hinged in limb.

Concrete examples

• The vessel (1) docks and is moored with hydraulically controlled hooks (5) which are hooked onto hoops (6) fixed to the pier. The vessel is pulled in and the limb (7) with the secondary spool (3) comes down and rests on the pier where the primary spool (4) is placed. The placement is done so that the coils are in the correct charging position when the limb is down. The limb is released so that it rotates freely around the articulated bearing on the vessel and lies against the wharf (2). Charging starts when the distance between the coils is satisfied. When the vessel is to leave the berth, the limb is lifted and then the moorings. This solution can be particularly suitable for passenger ferries that use a ferry limb to unload and unload passengers and vehicles.

• The vessel (1) docks and moors to another vessel. The limb (7) with the secondary coil (3) comes down and rests on the deck of the other vessel where the primary coil (4) is located. The placement is done so that the coils are in the correct charging position when the limb is down. The solution is used to transfer electricity between the vessels, and can be used for charging or consumption.

• In applications where there are large movements between vessel (1) and wharf/other vessel (2), an additional plate (8) can be installed on the underside of the limb.

The secondary coil (3) is placed on the additional plate. The plate is hinged to the limb and the joint has free rotation when the limb is down and in the charging position. This will reduce the influence of the vessel's movement on the coils' relative position.

Claims (4)

Patent claims 1. Limb/gangway mechanism for induction charging of maritime vessels, characterized by the fact that the induction charger's secondary coil (3) is located on the underside of the limb (7) of the vessel (1), and the charger's primary coil is located on the wharf/other vessel (2). 2. The limb/gangway mechanism as specified in claim 1 is characterized by the fact that the primary coil (4) is positioned so that when the vessel is moored and the limb is lowered, the coils will stand opposite each other with the correct distance for induction charging. 3. The limb/gangway mechanism as specified in requirements 1-2 is characterized by the fact that the limb is hinged to the vessel and in the loading position will lie loosely against the wharf/other vessel. 4. The limb/landing mechanism as stated in claims 1-3 is characterized by the fact that the secondary coil is attached to a plate (8) which is linked to the limb. In case of large movements, this can also be lowered and lie loosely against the wharf/other vessel.