Power transmission equipment

Abstract

To provide power transmission equipment with high robustness.SOLUTION: The power transmission equipment 3 comprises a metal housing 31 having an aperture 311, a receiver 32 stored in the metal housing 31, and a resin cover 33 provided over the aperture 311 directly above the receiver 32.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a power transmitting device. [Background technology]

[0002] Patent Document 1 discloses a technology for transmitting location information indicating the location of a battery built into the housing of an electric vehicle to an information management server according to a mobile communication method using information recorded on a SIM (Subscriber Identity Module) held in the connector part of the electric vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-10598 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in order to improve the accuracy of vehicle position detection, wireless communication with the power transmission device is necessary. However, if the power transmission device is placed on the ground, there is a possibility that the vehicle may be run over by the power transmission device, so robustness is required, and there is room for improvement.

[0005] The present disclosure has been made in view of the above, and has an object to provide a power transmitting device with high robustness. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the objectives, the power transmission device of the present disclosure comprises a metal casing having an opening, a wireless communication module having a transmitter or a receiver housed within the metal casing, and a resin cover provided in the opening directly above the wireless communication module. [Effects of the Invention]

[0007] According to the present disclosure, an effect of high robustness is achieved. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram illustrating an outline of a power transmission system according to an embodiment. [Figure 2] FIG. 2 is a cross-sectional view of a main part of a power transmitting device according to an embodiment. [Figure 3] FIG. 3 is a schematic configuration diagram illustrating an outline of a power transmission system according to a modified example of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a power transmission device according to an embodiment of the present disclosure will be described with reference to the drawings. Note that the components in the following embodiments include those that are easily replaceable by those skilled in the art, or those that are substantially identical. Furthermore, the drawings referred to in the following description merely show a schematic representation of the shape, size, and positional relationship to the extent that the contents of the present disclosure can be understood. In other words, the present disclosure is not limited to only the shape, size, and positional relationship exemplified in each drawing.

[0010] [Configuration of power transmission system] Fig. 1 is a schematic diagram showing an outline of a power transmission system according to one embodiment. The power transmission system 1 shown in Fig. 1 includes a vehicle 2 and a power transmission device 3. The vehicle 2 is assumed to be, for example, a battery electric vehicle (BEV) or a plug-in hybrid electric vehicle (PHEV) that requires charging. The power transmission device 3 is installed on the ground side (in the ground) of a parking lot where it can supply power to the vehicle 2.

[0011] 1 has an on-board device 21 installed at the bottom for automatic power reception. The on-board device 21 has a receiver 22 that functions as a wireless communication module for wirelessly communicating with the power transmission device 3, and is configured with a non-contact power receiving coil or the like or a contact connector that can come into contact with the power transmission device 3, and a resin cover 23 that is formed to cover the receiver 22.

[0012] The power transmitting device 3 (automatic power receiving device) communicates wirelessly with the receiver 22 of the vehicle 2. Fig. 2 is a cross-sectional view of the main parts of the power transmitting device. As shown in Fig. 2, the power transmitting device 3 has a metal housing 31 having an opening 311, a transmitter 32 that functions as a wireless communication module and is housed in the metal housing 31, and a resin cover 33 that is provided in the opening 311 of the metal housing 31 directly above the transmitter 32.

[0013] Resin cover 33 is made of a composite material of resin and metal. Resin cover 33 is connected to the inside of metal housing 31 via adhesive 34, and is positioned lower in the vertical direction than the top surface of metal housing 31.

[0014] The power transmission device 3 configured in this manner controls transmission and reception of information according to the relative positions of the transmitter 32 and the receiver 22, and includes a mechanism (not shown) that uses position information (hereinafter simply referred to as "position information") relating to the relative positions to move the ground-side power transmission device 3 closer to the vehicle-mounted device 21. The vehicle 2 may also have a parking control that adjusts the parking position of the vehicle 2 based on the position information.

[0015] According to the embodiment described above, the resin cover 33 is provided in the opening 311 of the metal housing 31 directly above the transmitter 32, thereby improving robustness.

[0016] Furthermore, according to one embodiment, wireless communication is used to position the vehicle 2, and radio waves are transmitted and diffracted through the resin cover 33, thereby reducing the influence of foreign matter such as mud, dust, and water compared to optical methods using lasers, cameras, etc.

[0017] Furthermore, according to one embodiment, by using wireless communication such as UWB (Ultra Wide Band), not only vehicle positioning of vehicle 2 can be determined, but also information can be exchanged between transmitter 32 and receiver 22, thereby automating the start and stop of charging.

[0018] Furthermore, according to one embodiment, the resin cover 33 is used, so that attenuation of radio waves can be minimized.

[0019] Furthermore, according to one embodiment, the resin cover 33 is connected to the inside of the metal housing 31 via adhesive 34, so that even if the vehicle 2 runs over the power transmission device 3, the weight of the vehicle 2 can be received by the metal housing 31, thereby improving robustness.

[0020] Furthermore, according to one embodiment, a resin cover 23 is formed to cover the receiver 22, protecting it from dust and mud, thereby minimizing radio wave attenuation compared to metal, preventing damage caused by foreign objects from the underside while the vehicle 2 is moving, and ensuring waterproof functionality.

[0021] In addition, in one embodiment, the receiver 22 is arranged inside the vehicle-mounted device 21 and the transmitter 32 is arranged on the side of the power transmission device 3, but this is not limited to this, and the transmitter 32 may be arranged inside the vehicle-mounted device 21 and the receiver 22 may be arranged on the side of the power transmission device 3.

[0022] In one embodiment, when the receiver 22 is housed in the vehicle-mounted device 21, the vehicle 21 may be provided with a lid 24 that opens during wireless communication and closes while the vehicle 2A is traveling, instead of the resin cover 23, as shown in vehicle 2A in Fig. 3. This allows the receiver 22 to be housed inside the vehicle-mounted device 21, thereby improving robustness. In this case, the vehicle 2A opens the lid just before charging begins.

[0023] (Other forms) Further advantages and modifications will readily occur to those skilled in the art. The invention in its broader aspects is not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

[0024] Although some of the embodiments of the present application have been described in detail above with reference to the drawings, these are merely examples, and the present invention can be implemented in other forms that have undergone various modifications and improvements based on the knowledge of those skilled in the art, including the aspects described in the disclosure of the present invention. [Explanation of symbols]

[0025] 1. Power transmission system 2,2A vehicle 3 Power transmission equipment 21 Onboard equipment 22 Receiver 23,33 Resin cover 24 Lid 31 Metal housing 32 Transmitter 34 Adhesive 311 Aperture

Claims

[Claim 1] a metal housing having an opening; a wireless communication module housed in the metal housing and having a transmitter or a receiver; a resin cover provided in the opening directly above the wireless communication module; Equipped with Power transmission equipment.

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