CN209805460U - Anti-eddy effect structure suitable for wireless charging environment and wireless charging device - Google Patents

Abstract

The utility model relates to a prevent vortex effect structure suitable for wireless charging environment, including magnetic conduction layer and parallel arrangement in the isolation layer of magnetic conduction layer one side, seted up the window on the magnetic conduction layer, correspond the window on the side of isolation layer and set up flutedly, the module that needs to avoid producing vortex effect sets up in the recess. Prevent the vortex effect structure and set up in the lateral part of wireless charging coil, and wireless charging coil and magnetic conduction layer, isolation layer are all parallel, and the magnetic conduction layer sets up between wireless charging coil and isolation layer. The utility model discloses still relate to a can install the wireless charging device who needs avoid producing the module of vortex effect, it includes wireless charging coil and the above-mentioned vortex effect structure of preventing that is applicable to wireless charging environment. The utility model discloses can provide a safe local installation for the module that need avoid producing the vortex effect neither can produce the vortex effect, work that can be normal again.

Description

Anti-eddy effect structure suitable for wireless charging environment and wireless charging device

Technical Field

The utility model belongs to the wireless field of charging, concretely relates to in order to solve the module that contains the metal can produce the problem of vortex effect and the anti-vortex effect structure that designs under the wireless charging environment to and use the wireless charging device of this structure.

Background

Compared with the situation that a charging interface for wired charging is easy to generate heat and damage under the condition of large current, the wireless charging interface is easy to realize the high-power charging function because of no physical contact, and therefore the wireless charging interface is valued and developed. For example, with the rapid development of new energy vehicles, people have higher and higher requirements on charging convenience, and the development of wireless charging technology for the new energy vehicles has a wide prospect.

However, the problems of foreign object detection, positioning and the like are still required to be solved in the wireless charging process, and otherwise, the use efficiency and safety cannot be guaranteed. To solve these problems, it is necessary to add detection modules and devices, and it is difficult to ensure that there is no metal with a large area by adding these modules, so that it is impossible to avoid the situation that eddy current is generated in the electromagnetic field, which may cause heat generation. Therefore, a new structure is required to be designed for the module that is to avoid the eddy current effect in the wireless charging environment, so that the module can be normally installed and operated.

Disclosure of Invention

The utility model aims at providing a can play the vortex effect of preventing, be adapted to the structure that the module that need avoid producing the vortex effect was installed in wireless charging environment.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

The utility model provides an anti-vortex effect structure suitable for wireless charging environment for to the module that needs avoid producing the vortex effect provide installation space in wireless charging environment, anti-vortex effect structure include magnetic conduction layer and parallel arrangement in the isolation layer of magnetic conduction layer one side, the window has been seted up on the magnetic conduction layer, correspond on the side of isolation layer the window is seted up flutedly, need avoid producing the module of vortex effect set up in the recess.

preferably, prevent the vortex effect structure and set up in the lateral part of wireless charging coil, just wireless charging coil with the magnetic conduction layer the isolation layer is all parallel, the magnetic conduction layer set up in wireless charging coil with between the isolation layer.

Preferably, the other side surface of the isolation layer is provided with a bulge which is used for ensuring that the thickness of the groove bottom of the groove meets the requirement, corresponding to the groove.

Preferably, the projection area of the metal part in the module needing to avoid the eddy current effect on the magnetic conductive layer is S1, the area of the window formed on the magnetic conductive layer is S2, and the area of the wireless charging coil is S3, S3 > S2 > S1.

Preferably, S3 > 10S1, S2 < 2S 1.

Preferably, the central axis of the window and the central axis of the groove are collinear with the center of the wireless charging coil and perpendicular to the perpendicular line of the wireless charging coil.

Preferably, the magnetic conduction layer is of a single structure or a splicing structure.

Preferably, between wireless charging coil and the magnetic conduction layer, be provided with the insulating layer between the magnetic conduction layer and the isolation layer respectively.

Preferably, the material of the magnetic conduction layer is ferrite, and the material of the isolation layer is aluminum.

The utility model also provides a can install the wireless charging device who needs avoid producing the module of vortex effect, it includes wireless charging coil and the above-mentioned vortex effect structure of preventing that is applicable to wireless charging environment.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model discloses can provide a safe local installation for the module that need avoid producing the vortex effect neither can produce the vortex effect, work that can be normal again.

Drawings

Fig. 1 is the utility model discloses a prevent schematic diagram of eddy current effect structure suitable for wireless charging environment.

In the above drawings: 1. a transmitting coil; 2. a receiving coil; 3. a magnetically conductive layer; 4. an isolation layer; 5. a window; 6. a groove; 7. modules that produce eddy current effects need to be avoided.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

The first embodiment is as follows: a wireless charging device comprises a wireless charging coil, a module 7 which needs to avoid generating an eddy current effect, an anti-eddy current effect structure for installing the module 7 which needs to avoid generating the eddy current effect, a shell (cover) and other necessary cables and the like. The wireless charging coil is divided into a transmitting coil 1 and a receiving coil 2, and the following description will take an eddy current effect prevention structure on the receiving coil 2 side as an example.

As shown in fig. 1, the anti-eddy current structure is disposed on the side of the wireless charging coil, and the anti-eddy current structure includes a magnetic conductive layer 3 and an isolation layer 4, where the isolation layer 4 is disposed on one side of the magnetic conductive layer 3 in parallel. Wireless charging coil is all parallel with magnetic conduction layer 3, isolation layer 4, and magnetic conduction layer 3 sets up between wireless charging coil and isolation layer 4.

The magnetic conduction layer 3 is made of non-metal material with high magnetic conductivity, and preferably made of ferrite material. The magnetic conduction layer 3 is of a single structure or a splicing structure. The window 5 is arranged on the magnetic conduction layer 3, namely after the magnetic conduction layer 3 with a single structure is made of ferrite materials, the window is opened at the middle part of the magnetic conduction layer as required, or when the magnetic conduction layer 3 is formed by splicing, a neutral position is formed at the middle part of the magnetic conduction layer to form the window 5.

The isolation layer 4 is preferably made of aluminum with small eddy effect, and the thickness of the isolation layer 4 is preferably more than 5mm and can be used as a shell of a product. A groove 6 is formed in one side face of the isolation layer 4, namely the side face close to the magnetic conduction layer 3, corresponding to the window 5, and a protrusion which can ensure that the thickness of the groove bottom of the groove 6 meets the requirement is arranged in the other side face of the isolation layer 4, namely the side face of the magnetic conduction layer 3 in the relative principle, corresponding to the groove 6, so that the groove 6 is only opened to one side of the magnetic conduction layer 3. The groove 6 forms an anti-eddy space, and the module 7 which needs to avoid generating an eddy effect is arranged in the groove 6, so that the eddy effect can not be generated in the range of a wireless charging electromagnetic field, and the problem that the module 7 is failed due to temperature rise can be avoided.

The receiving coil 2, the magnetic conduction layer 3 and the isolation layer 4 can form part of a vehicle-mounted secondary coil product in wireless charging. Can also set up the insulating layer respectively between wireless charging coil and magnetic conduction layer 3, magnetic conduction layer 3 and isolation layer 4, the thickness of insulating layer is generally no more than 3 mm. The total thickness of the receiving coil 2, the magnetic conduction layer 3 and the isolation layer 4 after actual installation is generally in the range of 20-40mm (excluding the thickness of the protrusion on the isolation layer 4).

Window 5 on the magnetic conduction layer 3, recess 6 on the isolation layer 4 all are generally located the central point, and the axis of window 5, the axis of recess 6 all with through the centre of a circle of wireless charging coil and the collineation of the perpendicular to wireless charging coil's perpendicular line. The projection area of the metal part in the module 7, which needs to avoid generating the eddy current effect, on the magnetic conduction layer 3 is S1, the area of the window 5 formed on the magnetic conduction layer 3 is S2, the area of the wireless charging coil is S3, and S3 > S2 > S1. Preferably, S3 > 10S1, S2 < 2S 1. For example, the cross-sectional dimension of the window 5 on the magnetic conductive layer 3 is 50mm x 50mm, the cross-sectional dimension of the groove 6 on the isolation layer 4 is 48mm x 48mm, and the depth of the groove 6 is 8 mm. The module 7 (metal part) that needs to avoid the eddy current effect is at least 2mm from the magnetically permeable layer 3. The distance between the magnetic conduction layer 3 and the isolation layer 4 is 3 mm.

Placing the module 7 which needs to avoid generating the eddy current effect in the anti-eddy current space can receive or transmit wireless signals through the window 5 on the magnetic conduction layer 3, and the wireless signals are not shielded by the magnetic conduction layer 3 or the wireless charging coil, so that the condition that the module 7 cannot continue to work due to heat is avoided.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides an anti-eddy current effect structure suitable for wireless charging environment for to the module that needs avoid producing the eddy current effect provides installation space in wireless charging environment, its characterized in that: the eddy current effect preventing structure comprises a magnetic conduction layer and an isolation layer arranged on one side of the magnetic conduction layer in parallel, a window is formed in the magnetic conduction layer, a groove is formed in one side face of the isolation layer corresponding to the window, and a module which needs to avoid generating an eddy current effect is arranged in the groove.

2. The anti-eddy effect structure suitable for use in a wireless charging environment according to claim 1, wherein: prevent the vortex effect structure and set up in the lateral part of wireless charging coil, just wireless charging coil with the magnetic conduction layer the isolation layer is all parallel, the magnetic conduction layer set up in wireless charging coil with between the isolation layer.

3. The anti-eddy effect structure suitable for use in a wireless charging environment according to claim 1, wherein: the other side of the isolation layer is provided with a bulge corresponding to the groove, and the thickness of the groove bottom of the groove meets the requirement.

4. The anti-eddy effect structure suitable for use in a wireless charging environment according to claim 2, wherein: the projection area of the metal part in the module needing to avoid the eddy current effect on the magnetic conduction layer is S1, the area of the window formed on the magnetic conduction layer is S2, the area of the wireless charging coil is S3, and S3 is greater than S2 is greater than S1.

5. The anti-eddy effect structure suitable for use in a wireless charging environment according to claim 4, wherein: s3 > 10S1, S2 < 2S 1.

6. The anti-eddy effect structure suitable for use in a wireless charging environment according to claim 2, wherein: the axis of window the axis of recess all with the warp the centre of a circle of wireless charging coil and perpendicular to the perpendicular line collineation of wireless charging coil.

7. The anti-eddy effect structure suitable for use in a wireless charging environment according to claim 1, wherein: the magnetic conduction layer is of a single structure or a splicing structure.

8. The anti-eddy effect structure suitable for use in a wireless charging environment according to claim 2, wherein: the wireless charging coil with between the magnetic conduction layer, the magnetic conduction layer with be provided with the insulating layer between the isolation layer respectively.

9. The anti-eddy effect structure suitable for use in a wireless charging environment according to claim 1, wherein: the material of magnetic conduction layer is ferrite, the material of isolation layer is aluminium.

10. The utility model provides a wireless charging device, includes wireless charging coil, its characterized in that: the wireless charging device further comprises an anti-eddy effect structure suitable for use in a wireless charging environment as claimed in any one of claims 1 to 9.