Wireless charging system, charging transmitting device, charging receiving device and automobile

Abstract

The invention discloses a wireless charging system, a charging transmitting device, a charging receiving device and an automobile. The wireless charging system comprises the charging transmitting device and the charging receiving device. The charging transmitting device comprises a primary coil which comprises a first child primary coil and a second child primary coil which are arranged in parallel in a first direction. The charging receiving device comprises a secondary coil which comprises a first child secondary coil and a second child secondary coil which are arranged in parallel in the first direction. The first child primary coil and the second child primary coil are separated by a first gap and / or the first child secondary coil and the second child secondary coil are separated by a second gap. With application of the wireless charging system, the higher lateral deviation capacity can be realized, and the parking difficulty can be effectively reduced for the driver when the wireless charging system is applied to the automobile to perform wireless charging.

Description

technical field [0001] The invention relates to the technical field of wireless charging, in particular to a wireless charging system, a charging transmitting device, a charging receiving device and an automobile. Background technique [0002] Wireless charging uses electromagnetic induction and other technologies. The charging device charges the charged device in a non-contact manner, and uses the magnetic field as the medium to realize the non-contact transmission of electric energy. Compared with wired charging, wireless charging has the advantages of less leakage, fully automatic operation and unattended operation, so it has been widely used in electric vehicle charging technology. [0003] In the prior art, a secondary coil is installed on an electric vehicle, and a primary coil is installed on a parking space of a wireless charging system. When the electric vehicle is parked at the preset charging position on the parking space, the primary coil and the secondary coil ...

AI Technical Summary

Problems solved by technology

[0004] The offset capability of a wireless charging system is an important indicator to measure its performance. For example, the DD transformer often used in a wireless charging system is a loosely coupled transformer composed of a primary coil and a secondary coil. Due to the longitudinal offset capability of the DD transformer The defect of better and poor lateral offset ability, so the wireless charging system with this DD type transformer has the disadvantages of better longitudinal offset ability and poor lateral offset ability

For example, when parking for wireless charging, it is necessary to ensure that the primary coil and the secondary coil are facing each other or can only float within a small offset distance in the lateral direction, so as to ensure the smooth progress of wireless charging, which greatly increases Parking Difficulty

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