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A wireless charging device for electric vehicles

A technology for electric vehicles and wireless charging, which is applied in the direction of electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problems of low wireless charging efficiency, achieve the effects of simple structure, enhanced magnetic coupling degree, and improved transmission efficiency

Inactive Publication Date: 2021-04-16
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a wireless charging device for electric vehicles to solve the problem of low efficiency of wireless charging for electric vehicles

Method used

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  • A wireless charging device for electric vehicles
  • A wireless charging device for electric vehicles
  • A wireless charging device for electric vehicles

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Embodiment Construction

[0019] In order to make the content and advantages of the technical solution of the present invention more clear, a wireless charging device for electric vehicles and a design method of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, the power supply, conversion circuit and electromagnetic emission part are laid under the road. The power supply provides input power for the whole system. Alternating electromagnetic field; the electromagnetic receiving part is located inside the car, and receives the alternating electromagnetic field emitted by the electromagnetic transmitting part through resonant coupling; in addition, the processing circuit processes the alternating current input by the electromagnetic receiving part, outputs constant voltage direct current, and stores In the battery pack, powering the electric vehicle.

[0021] Such as figure 2 As shown, the electromagnetic ...

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Abstract

The invention relates to a wireless charging device for electric vehicles, which adopts a magnetic coupling resonant wireless power transmission and receiving method. The wireless charging device includes an electromagnetic receiving part, a processing circuit and a storage battery pack. The electromagnetic receiving part includes a receiving coil and a coupling enhancement Iron core; the coupling enhanced iron core includes a cylinder in the middle of the iron core and cylinders at both ends of the iron core; the cross-sectional radius R of the cylinder in the middle of the iron core and the radius R of the receiving coil 2 equal; the height h of the cylinders at both ends of the iron core is 1 / 4 of the length L of the cylinder in the middle of the iron core. The invention enhances the magnetic coupling effect between the transmitting coil and the receiving coil during long-distance transmission, and improves the transmission distance of the electric vehicle wireless charging.

Description

technical field [0001] The invention belongs to the technical field of wireless power transmission, and relates to a wireless charging device for electric vehicles. Background technique [0002] Wireless power transmission, also known as non-contact power transmission, refers to a method of energy transmission from the power source to the load without direct electrical contact. Wireless power transmission has always been a human dream. As early as 1893 at the Columbia World Expo, American scientist Nikola Tesla demonstrated his wireless phosphorescent lighting. NikolaTesla uses the principle of wireless power transfer to light the bulb without any wire connection. This is an important attempt of human beings in the early stages of wireless power transmission. In 2007, Professor Marin Soljacic of the Massachusetts Institute of Technology and others made new progress in medium-distance wireless power transmission. Subsequently, researchers around the world have carried out...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L53/12H01F38/14H01F27/24H01F27/28
CPCH01F27/24H01F27/28H01F38/14B60L53/12Y02T10/70Y02T90/167Y02T10/7072Y02T90/14Y04S30/12
Inventor 施艳艳冯静王萌王璨范悦
Owner HENAN NORMAL UNIV
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