WO2021262123A1

WO2021262123A1 - A vehicle wheel with high efficiency wireless power and data transmission in electric land vehicles

Info

Publication number: WO2021262123A1
Application number: PCT/TR2021/050646
Authority: WO
Inventors: Serhan Özdemi̇r; Mert YILMAZ
Original assignee: İzmi̇r Yüksek Teknoloji̇ Ensti̇tüsü Rektörlüğü
Priority date: 2020-06-25
Filing date: 2021-06-24
Publication date: 2021-12-30
Also published as: TR202010027A1

Abstract

The invention relates to a vehicle wheel (10), which enables the vehicles to communicate with the electricity/charge supplier company and makes power transmission more efficient, in order to turn the wheels of electric and wheeled land vehicles into a kind of wireless data and power transmission vehicle.

Description

A VEHICLE WHEEL WITH HIGH EFFICIENCY WIRELESS POWER AND DATA TRANSMISSION IN ELECTRIC LAND VEHICLES

Technological Field:

The invention relates to a vehicle wheel that enables the vehicles to communicate with the electricity/charging supply company and makes the power transmission more efficient in order to turn the wheels of electric and wheeled land vehicles into a kind of wireless data and power transmission vehicle.

State of the Art:

The first known electric motor and vehicle in history was invented by Thomas Davenport 15 in Vermont, America in 1835. The vehicle was a small locomotive using two electromagnets, a pivot and a battery. Contrary to what is known, electric vehicles were more preferred in the early years of automobile history. The reason for this was the vibration and sound problem in gasoline vehicles. However, when this problem was solved and the performance of gasoline vehicles was improved, interest in electric vehicles decreased. However, since clean energy is needed today, electric vehicles have started to attract attention again. Along with the interest in electric vehicles, various inventions are being developed to solve the energy problem of these vehicles. The invention, which is the subject of the description, describes a vehicle wheel to enable the vehicles to be charged while in motion.

In the prior art, there are inventions that provide power transmission for charging vehicles in motion. In these inventions, power transmission is realized between the secondary coils installed in the vehicle and the primary coils installed under the road floor by using magnetic field. Roads using primary coils under the ground are also described as pilot path or station path.

In the vast majority of vehicles with wireless power transmission, the windings are positioned on the flat parts of the vehicles closest to the ground. For example, the lower part of the vehicle underbody lining is suitable for this. However, there is a distance of 30-40 cm between this section and the soil. This distance reduces the power transmission efficiency. In the prior art, there are also inventions that realize the power transmission mentioned above through the wheel. The biggest disadvantage of these inventions is the low power transmission efficiency. The reason for the low power efficiency is that spiral winding is not used, and spiral winding is used in circular form in versions using spiral winding. The circular form spiral winding reduces the power transmission efficiency. Another problem is that the vehicle wheel cannot contact the energy supply company.

In the patent document numbered US2017136883, encountered in the literature search, systems, methods and devices related to energy storage in an electric vehicle are described. Although it is stated that the power transmission is carried out on the wheel, the use of angular form spiral winding has not been found to increase the power transmission efficiency, as in the invention, which is the subject of the description. Therefore, the power transmission efficiency is very low.

In the document numbered US2012025629 (A1) encountered in the literature search, an electric vehicle that can be charged on a road is mentioned. The coil located in the wheel of the electric land vehicle can provide charging with the windings laid on the road. No mention is made of a method or element for the vehicle to communicate with a charging provider. It is seen that the mentioned coils do not have a rectangular or square form.

An electric vehicle charging system is described in the application numbered US2020055415 (A1) encountered in the literature search. No coils and windings were found on the vehicle wheels mentioned here.

As a result, there is a need for a vehicle wheel that overcomes the prior state of the art and eliminates its disadvantages.

Brief Description of the Invention:

The invention is a vehicle wheel with additional features in which the known state of the art is overcome, its disadvantages are eliminated.

The aim of the invention is to introduce a vehicle wheel that enables the vehicles to communicate with the electricity/charge supply company and makes the power transmission more efficient in order to turn the wheels of electric and wheeled land vehicles into a kind of wireless data and power transmission vehicle. Another aim of the invention is to introduce a new vehicle wheel that increases power transmission efficiency by using rectangular, square and similar angular windings instead of oval and circular windings.

Another aim of the invention is to provide a vehicle wheel that can communicate with the energy supply company.

Another aim of the invention is thanks to its ability to communicate with the electricity supplier;

- The charging process can be started by contacting while parked or on the move,

In cases such as theft of the electric vehicle, in case the electric vehicle is charged on any highway, it is reported to the authorized units by the supplier company,

It is possible for two moving or stationary vehicles that supply energy from the same supplier to transfer power wirelessly to each other on a floor with a parking infrastructure suitable for wireless charging and detect each other's positions via wireless connection,

Introducing a vehicle wheel that provides a wireless power transmission system in which the positions of the vehicles can be determined precisely by the authorized units (traffic units).

In order to achieve all the above-mentioned objectives and which will emerge from the detailed description below, the present invention is a system that enables the vehicles to communicate with the electricity/charging supplier company and makes power transmission more efficient, to turn the wheels of electric and wheeled land vehicles into a kind of wireless data and power transmission. It is a vehicle wheel and its feature is; It is characterized by the fact that it contains a large number of angular angular shaped (square form, rectangular form, broken oval form, broken angular form and similar) spiral windings placed sequentially on the inner surface base of the vehicle wheel in order to supply power from the primary windings located under the ground where the vehicle is located.

Explanation of Figures:

The invention will be described with reference to the accompanying drawings so that the features of the invention will be more clearly understood. However, it is not intended to limit the invention to these particular embodiments. On the contrary, it is also intended to cover all alternatives, modifications and equivalents that may be included within the scope of the invention as defined by the appended claims. It should be understood that the details shown are for illustrative purposes only and are intended to provide the most useful and straightforward description of both the embodiment of the methods and the conventions and conceptual features of the invention. In these drawings;

Figure - 1 The subject of the invention is the perspective view for the vehicle wheel.

Figures that will help to understand the present invention are numbered as indicated in the attached picture and are given below with their names.

Explanation of References:

10. Vehicle wheel

11. Spiral winding

12. Connection element

13. Chip

Description of the Invention:

In this detailed explanation, the vehicle wheel (10) which is the subject of the invention is explained with examples that will not create any limiting effect only for better understanding of the subject. In the description, a vehicle wheel (10) is described, which enables the vehicles to communicate with the electricity/charge supply company and makes the power transmission more efficient in order to turn the wheels of electric and wheeled land vehicles into a kind of wireless data and power transmission means.

In Figure 1, the perspective view of the vehicle wheel (10) which is the subject of the invention is given. Accordingly, the vehicle wheel (10) includes a large number of spiral windings (11) arranged sequentially on the inner surface base. Spiral windings (11) are related to each other by connecting elements (12). The inner surface base of the vehicle wheel (10) is completely equipped with spiral windings (11). There is also a chip (13) inside the vehicle wheel (10). This chip (13) provides communication between the vehicle power transmission system and the power transmission system supplier. The spiral winding (11) used in the vehicle wheel (10) is structured in a angular form (square form, rectangular form, irregular oval form, irregular angular form and the like) as can be seen in Figure 2. In this way, it supplies power with maximum efficiency from the power supply windings located under the ground where the vehicle wheel (10) is located. The reason for this is quite simple. Vehicle wheels (10) have a rectangular projection on the ground. This situation is given in Figure 3. Projection images of eight different vehicle wheels (10) are shown in Figure 3, from left to right. The air pressure of the vehicle wheels increases from left to right. The pressure value, which was initially 15 Psi on the left, increases five by five towards the right and becomes 50 Psi at the end. As it can be understood from here, the projection that the vehicle wheel leaves on the ground, regardless of the air value, is in a form very close to the rectangle. For this reason, in the invention that is the subject of the description, the spiral winding (11) is configured to be angular form (square form, rectangular form, irregular oval form, irregular angular form and the like).

Wireless power transmission can be explained by Faraday's Law. Faraday's law shows that the voltage (e) induced between the two coils is directly proportional to the change of magnetic flux (F) with time, given in Equation 1. There are two main ways to increase the magnetic flux under constant magnetic field intensity (B). a) To increase the projection area created by the winding, A. b) Increasing the number of windings and therefore the inductance, N.

The spiral winding (11) form to be placed on the vehicle wheel (10) should be wound in such a way as to create an area to maximize the induced voltage. In this case, the spiral winding (11) contour must be in the same form as the form formed when the vehicle tire hits the ground. In Figure 3, it is seen that the tire footprint takes the form of a rectangular or distorted rectangle. According to Faraday's law, the most optimal spiral winding (11) form, which will give the highest efficiency, is the rectangular form. The maximum area is provided with this form. In this way, item (a) above is provided.

According to Faraday's law, another way to increase the induced voltage is to increase the number of windings (and thus inductance) of the coil. The wall thickness of the tires of modern vehicles is in the range of 2-5 cm. This wall thickness consists of rubber as well as a carcass structure that gives the tire its strength. It is seen that the volume in the tire wall thickness is very limited and it is difficult to place a coil. Therefore, the windings should not be in the form of a helix, but in a spiral form in order not to take up space. In the invention, which is the subject of the description, spiral and angular windings (square form, rectangular form, broken oval form, bad angular form and the like) are used to obtain maximum power transmission efficiency.

Claims

1 The invention is a vehicle wheel (10), which enables the vehicles to communicate with the electricity/charging supply company and makes power transmission more efficient in order to turn the wheels of electric and wheeled land vehicles into a kind of wireless data and power transmission vehicle. The feature of the invention; characterized by spiral winding (11) with multiple angular forms (square form, rectangular form, broken oval form, broken angular form and the like) placed sequentially on the inner surface base of the vehicle wheel (10) to supply power from the primary windings located under the floor where the vehicle is located.

2- It is a vehicle wheel (10) in accordance with Claim 1 and its feature is; the winding placed inside the vehicle wheel (10) has a spiral form. 3- It is a vehicle wheel (10) in accordance with Claim 1 and its feature is; the winding placed inside the vehicle Wheel (10) has an angular form (square form, rectangular form, broken oval form, bad angular form and the like).

4 It is a vehicle wheel (10) in accordance with Claim 1 and its feature is; it contains connection elements (12) that provide connection between the spiral windings (11) located in the vehicle wheel (10).

5- It is a vehicle wheel (10) in accordance with Claim 1 and its feature is; it contains at least one chip (13) located in the vehicle wheel (10) and providing communication with the energy supply company and authorized units.