Device for charging batteries of electric vehicles by induction

Abstract

The invention relates to a device that allows charging any type of vehicle by induction with optimal efficiency, without human intervention, and allows for invisible integration in any location, even in confidential places, since nothing is visible. It comprises, for the power supply part, a power cable (9) leading to the grid, a retractable stand (8) including a mechanism for raising and lowering and a primary coil (6), an electronics box (7), a receiver (2), an electronics box (5) integrated under the vehicle floor and retrofitted or integrated by the manufacturer, and a power cable (4) connected to the battery (3). This retractable stand (8) is managed by a mobile application that is mandatory in the vehicle or integrated into it. The device according to the invention is particularly intended to assist the charging of electric vehicles by increasing the number of inductive charging points by equipping them in rest areas on roads and highways, in public or private parking lots and in parking spaces in public or private locations. The device according to the invention is compatible with direct current charging or alternating current charging. The device according to the invention is also intended to automatically charge any electric vehicle, any autonomous vehicle, including two-wheeled vehicles and robotic autonomous transport systems, without human intervention.

Description

Technical Field

[0001] The present invention relates to a device for assisting in charging electric vehicles by induction, as opposed to current devices that use cables and connection sockets. Background Art

[0002] The inductive charging solutions proposed for electric vehicles are based on systems with a large distance between the transmitter and receiver, approximately 20 centimeters. This means the use of expensive high-frequency technologies, which are prioritized for each brand of vehicle. Furthermore, it is noted that the ground clearance varies between different models of the same brand, and the electromagnetic coupling problem is proportional to the square of the distance between the transmitter and receiver and their center. All of this makes these charging solutions expensive and difficult to implement universally.

[0003] This original and innovative solution will enable the easy and automatic charging of batteries for electric vehicles without human intervention from the driver, and in the near future, will also be able to charge the batteries of autonomous vehicles without human intervention from the driver. Summary of the Invention

[0004] The invention consists in using a retractable pole comprising a transmitter, which is placed on the road and unfolded towards the floor of the electric vehicle to be charged (comprising a receiver) until it comes into contact with it.

[0005] This retractable stand and the vehicle's floor will be equipped with coils that allow the battery to be charged by induction using a universal process chosen by all vehicle manufacturers. The retractable stand will be equipped with control electronics (7) and safety devices that allow the transmitter to be brought to the receiver (2). This will allow the power to be transferred to the vehicle's battery through the electronics box (5) and the power cable (4). The transmitter coil is integrated into the top of the retractable stand.

[0006] The pile also includes a mechanism for raising and lowering the pile, and a power cord (9) for delivering energy from the grid.

[0007] The charging mode can be carried out with direct or alternating current through the electronic box, allowing the choice of the battery charging speed.

[0008] This solution allows to guarantee the best efficiency of the battery charged by induction.

[0009] This solution has the advantage of proposing a universal system compatible with all vehicle ground clearances, maximizing electrical efficiency to over 95%. The receiver coil will be located in the middle of the vehicle floor, thus facilitating the centering of the receiver and transmitter, an alignment that will be controllable via an application integrated into the mobile phone or directly included in the vehicle interface when the pile is in a stationary position.

[0010] Such an application would be able to locate available posts to allow centering of a vehicle parked forward or reverse in a parking space, or to the left or right along a sidewalk (the receiver already centered laterally on the transmitter).

[0011] Such an application will also be able to control the charge level and charging time, to manage the height of the pile according to the vehicle until contact, and to prohibit starting the vehicle if the pile is not returned to its starting point, ie zero level relative to the ground.

[0012] The application will also manage data, allowing charging invoices to be issued based on the requested power and charging duration, will also integrate the user's bank information, and will integrate a map showing available charging stations near the vehicle.

[0013] Automation of the pile is ensured on several levels: the pile can only be deployed if the centring shows the correct coupling, charging can only start if the pile (the transmitter part with the integrated coil) is in contact with the receiver part (the integrated coil under the vehicle floor), and the vehicle can only move if the pile has fully returned to its initial position, i.e. to the ground.

[0014] This solution would allow the easy installation of these charging points in all public or private places, as well as confidential places, since they would be invisible and impossible to vandalize, since there would be no visible elements on the road surface.

[0015] The accompanying drawings demonstrate the simplicity of this solution and its apparent efficiency.

[0016] Integrated automation, invisible when stationary, adaptable to all types of rechargeable electric vehicles: cars, trucks, buses, self-driving cars, as well as two-wheelers, scooters, motorcycles, unmanned systems (delivery robots), etc.

Claims

1. A system for charging a battery of an electric vehicle by induction, comprising: - retractable piles (8) which will be positioned on the road, and - an application for managing the retractable pole, the application being a mobile application (14) or an application included in the electric vehicle, Wherein the retractable pile (8) comprises: - a transmitter comprising a coil (6) allowing the transmission of electrical energy by induction to a receiver integrated under the floor (1) of the electric vehicle and thus allowing the battery (3) of the electric vehicle to be charged via the electronic box (5) and the power cord (4) of the electric vehicle, - a mechanical device allowing said retractable pile (8) to be raised or lowered, - power lines (9), delivering energy from the grid, and - control electronics (7) allowing to bring the transmitter to the receiver (2) integrated under the floor (1) of the electric vehicle, and The application layout is: - allows controlling the position of the electric vehicle relative to the pile in a stationary position, - indicates the quality of the coupling (12), the charge level (13) and the charging time (11), and - allows management of the control of the displacement in height of the retractable pole (8) relative to the electric vehicle until contact with the receiver, and If the retractable stand has not returned to its starting point, ie to zero level relative to the ground, starting of the electric vehicle is prohibited.

2. The system according to claim 1, wherein: The coil (6) is integrated at the top of the retractable pile (8).

3. System according to claim 1, wherein the retractable pile (8) also integrates a safety device included in the electronic box with the control electronics (7).

4. The system according to claim 1, wherein: The charging mode can be carried out in direct current or alternating current by means of the electronic box (5) of the electric vehicle which allows the selection of the charging speed of the battery.

5. The system according to claim 1, wherein: The application is arranged to integrate with: - the user's bank details to allow invoicing of the consumed energy, and - Displaying a map of the retractable docks available in the vicinity of the electric vehicle.

6. The system according to claim 5, wherein: The application process is necessary and integral to the use of the retractable pile.

7. The system according to claim 1, wherein: The retractable pile (8) is located on the road.

8. The system according to claim 7, wherein: The application is included in the electric vehicle.

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