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Wireless charging system

A wireless charging and charging system technology, applied in charging stations, electric vehicle charging technology, power management, etc., can solve the problems of expensive Liz wires and achieve the effect of increasing EMC and reducing electromagnetic interference

Pending Publication Date: 2020-03-24
ABB E-MOBILITY BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Liz wire can be quite expensive

Method used

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Examples

Experimental program
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Embodiment Construction

[0050] figure 1 A charging system arrangement 10 comprising a wireless charging system 12 and an electric vehicle 13 is shown.

[0051] The wireless charging system 12 includes an AC-to-DC converter 14 in a first housing 16 that converts AC current from an electrical grid 18 to DC current. The DC current is passed from the first housing 16 via a cable 20 to a second housing 22 which houses a DC to AC converter 24 and a first induction coil 26 .

[0052] The first housing 16 may eg be connected to a wall. The second housing 22 can be arranged in the ground 27 below the electric vehicle 13 , for example in a parking lot.

[0053] The DC to AC converter generates a high frequency current, which is supplied to the first induction coil.

[0054] The first induction coil 26 is inductively coupled to the second induction coil 28 in the on-board charging device 30 of the electric vehicle 13 . The AC current induced in the second induction coil 28 is rectified by a rectifier 32 ins...

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PUM

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Abstract

A wireless charging system (12) for electric vehicles (13) comprises an AC-to-DC converter (14) connectable to an electric AC grid (18); a DC-to-AC converter (24) interconnected with the AC-to-DC converter (14); a first inductive coil (26) interconnected with the DC-to-AC converter (24) and for inductively coupling to a second inductive coil (30) for power transfer via an air gap; a first housing(16), in which the AC-to-DC converter (14) is arranged; a second housing (22), in which the DC-to-AC converter (24) and the inductive coil (26) are arranged; and a cable (20) for interconnecting the AC-to-DC converter (14) and the DC-to-AC converter (24) outside of the first housing (16) and second housing (22).

Description

technical field [0001] The invention relates to the field of electric vehicles. In particular, the invention relates to wireless charging systems and charging system arrangements for electric vehicles. Background technique [0002] Wireless power transfer via induction coils is an emerging technology that enables electrical power transfer over a certain distance without physical contact. In recent years, transmission distances at kilowatt power levels have increased from a few millimeters to hundreds of millimeters at grid-to-load efficiencies above 90%. These advances make wireless power transfer very attractive for charging electric vehicles in both stationary and dynamic charging scenarios. [0003] Electric vehicle batteries are usually charged on the grid. After being rectified and stabilized by a converter system, the supplied power is delivered to the high voltage system of the electric vehicle with inductive transmission. Inductive energy transfer generally has t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L53/12
CPCB60L53/30B60L53/122B60L53/12H02J50/10H02J5/00
Inventor F.托姆贝利
Owner ABB E-MOBILITY BV