Wireless charging coil shell

Abstract

The invention discloses a wireless charging coil shell which comprises a non-metallic shell body and a metallic skeleton, wherein the metallic skeleton is embedded into the non-metallic shell body, the metallic skeleton comprises two parts of skeletons, namely a first skeleton and a second skeleton, the two parts of skeletons are in completely consistent sizes and shapes and arranged in a mutually-symmetrical mode; the two parts of skeletons are not in contact with each other, and don't form a complete loop; and a plurality groups of stray capacitances are arranged between the two parts of skeletons. According to the wireless charging coil shell, the metallic skeleton in a certain shape is embedded into the non-metallic shell body, the effects of strengthening the shell body and reducing the thickness are taken, EMI in high frequency is further filtered out by utilizing the resonance effect of the metallic skeleton, and finally a strengthened shell body and a coil shell body in EMI wave filter plate integration are acquired through reasonable design.

Description

technical field [0001] The invention relates to the technical field of electric vehicle wireless charging, in particular to a wireless charging coil casing. Background technique [0002] An electric vehicle is a new energy vehicle, which uses batteries to provide electric energy as power, and is green and environmentally friendly with less pollution. The use of electric vehicles helps to solve environmental and energy problems and is welcomed by people. Electric vehicle batteries have limited power and need to be charged when the power is low. Currently, there are two charging methods: wired charging and wireless charging. Compared with wired charging, wireless charging is a new technology that does not require bulky plugs and Cable, no danger of leakage, safe and reliable, no manual operation required, easy to use. [0003] However, the coil area of ​​electric vehicle wireless charging is relatively large, and the shell on its surface cannot be made of all-metal materials...

AI Technical Summary

Problems solved by technology

[0003] However, the coil area of ​​electric vehicle wireless charging is relatively large, and the shell on its surface cannot be made of all-metal materials due to the heating effect of the magnetic field. When the shell of non-metallic materials is relatively thin, the strength is generally difficult to meet the requirements; When transmitting power, the existing coil structure design will generate a large magnetic field, causing high-frequency EMI noise interference, which will affect the normal operation of other electronic equipment and equipment safety;

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