METHOD FOR ALIGNING A CHARGING RECEIVER OF AN ELECTRIC OR HYBRID MOTOR VEHICLE AND A TRANSMITTING BASE OF A CHARGING STATION

Abstract

The invention relates to a method for aligning a load receiver (RE) of an electric or hybrid motor vehicle (V) and a transmitting base (BE) anchored in the ground (S) comprising a step of configuring said vehicle; a step of measuring the distance between the bumper and the obstacle (DPA); a step of calculating a distance between the transmitting base and the bumper (DGUP), the distance between the transmitting base and the bumper (DGUP) being equal to the distance between the transmitting base and the obstacle (DGU) from which the distance between the bumper and the obstacle (DPA) is subtracted; a step of calculating a distance to be traveled (T); a step of moving the vehicle and a warning step. The invention also relates to a computer program and a vehicle configured to implement said method. Figure 1

Description

Title of the invention: METHOD FOR ALIGNING A CHARGING RECEIVER OF AN ELECTRIC OR HYBRID MOTOR VEHICLE AND A TRANSMITTING BASE OF A CHARGING STATION

[0001] The invention relates to electric or hybrid motor vehicles, and more particularly to automatic recharging systems for these vehicles.

[0002] Known from the prior art is a patent application CN111422090 which describes an alignment device comprising a transmission coil and a reception coil, said device allowing the automatic and wireless recharging of electrical energy in an electric motor vehicle. The vehicle has wheels. The invention also relates to a method for aligning the transmission coil and the reception coil.The method comprises a step of obtaining information regarding the parking of the vehicle to be recharged and the position of the receiving coil relative to the wheels, a step of moving the vehicle in a direction indicated on the parking space, a step of measuring the distance between the transmitting coil and the wheels, a step of determining the relationship between the transmitting coil and the receiving coil based on the position of the receiving coil relative to the wheels and the transmitting coil relative to the wheels. However, disadvantages remain. The movement of the vehicle is carried out by a blind driver. The distance to be traveled to allow the alignment of the transmitting coil and the receiving coil is not calculated.Furthermore, the patent application does not mention any tolerance for the alignment of the transmitting coil and the receiving coil, which may increase the difficulty for the driver in positioning his vehicle.

[0003] The objective of the present invention is to remedy these drawbacks and to facilitate the positioning of the vehicle to allow it to be recharged with electrical energy.

[0004] To achieve this objective, the invention proposes a method for aligning a charging receiver of an electric or hybrid motor vehicle and a transmitting base anchored in the ground of a recharging station to automatically recharge said vehicle with electrical energy, said recharging station comprising a ground and an obstacle, said vehicle comprising a front running gear and a rear running gear whose points of contact with the ground define a base plane defined by a first longitudinal direction corresponding to straight-line driving, by a second transverse direction orthogonal to the first longitudinal direction and a third vertical direction or thogonal to the first direction and to the second direction and is oriented away from the ground, the ground comprising said transmitting base, said vehicle comprising a bumper and a warning means, said bumper comprising at least one parking sensor making it possible to measure a distance between the bumper and the obstacle, the distance between the bumper and the load receiver being predetermined, remarkable in that said method comprises the following steps: - a step of configuring said vehicle to determine a distance between the transmitting base and the obstacle as a function of a distance between the bumper and the obstacle; - a step of measuring the distance between the bumper and the obstacle by said at least one parking sensor; - a step of calculating a distance between the emitting base and the bumper, the distance between the emitting base and the bumper being equal to the distance between the emitting base and the obstacle from which the distance between the bumper and the obstacle is subtracted; - a step of calculating a distance to be covered, the distance to be covered being equal to the distance between the transmitting base and the obstacle from which is subtracted the distance between the bumper and the obstacle and the distance between the bumper and the load receiver; - a step of moving the vehicle in the first direction until the distance to be covered is less than a tolerance threshold value; - a warning step by said warning means to warn the driver that the charge receiver is aligned with said transmitting base.

[0005] Thanks to the invention, the positioning of the vehicle for recharging is made easier.

[0006] Advantageously, the vehicle comprises a control for measuring the distance between the bumper and the obstacle, said parameterization step comprising a step of vertical alignment of the bumper and the transmitting base in the third direction, a step of activating the measurement control, a step of measuring the distance between the bumper and the obstacle by said at least one parking sensor, and a correlation step for determining the distance between the transmitting base and the obstacle.

[0007] Thus, the distance between the transmitting base and the obstacle is known and can be used for future recharging of the vehicle at this recharging station.

[0008] Advantageously, the emitting base comprises a central axis and at least one end, said bumper being aligned with said end in the third direction, said parameterization step comprising a correction step during which a correction distance is subtracted from the distance between the emitting base and the bumper to obtain the distance between the emitting base and the obstacle.

[0009] This configuration makes it possible to avoid measurement errors due to the dimensions of the transmitting base.

[0010] Advantageously, the emitting base comprises a reference element, preferably a telescopic rod to facilitate the vertical alignment step of the bumper and the transmitter base.

[0011] Thus, the driver knows where to position his vehicle to carry out its settings.

[0012] Preferably, said telescopic rod is made of rubber.

[0013] This prevents damage to the vehicle in the event of friction during its positioning. In addition, the flexibility of the telescopic rod allows its multiple use even in the event of impact by a vehicle.

[0014] Advantageously, during said warning step, said warning means is an audible and / or visual warning means.

[0015] Thus, a deaf or hard of hearing person is able to understand the warning.

[0016] The invention also relates to a computer program comprising instructions which, when the program is executed by a computer, cause the latter to implement the steps of the method of aligning a charging receiver of an electric or hybrid motor vehicle and a transmitting base anchored in a ground to carry out the automatic recharging of said vehicle with electrical energy described above.

[0017] Furthermore, the invention relates to an electric or hybrid motor vehicle comprising an electronic control unit configured to implement the method of aligning a charging receiver of an electric or hybrid motor vehicle and a transmitting base anchored in a ground to carry out the automatic recharging of said vehicle with electrical energy previously described.

[0018] The invention will be further detailed by the description of non-limiting embodiments, and on the basis of the appended figures illustrating variants of the invention, in which: - [Fig.l] schematically illustrates an electric or hybrid motor vehicle implementing the method of aligning a charging receiver of an electric or hybrid motor vehicle and a transmitting base anchored in the ground of a charging station according to one embodiment of the invention; - [Fig.2] schematically illustrates the electric or hybrid motor vehicle during the configuration step when implementing the method of aligning a charging receiver of an electric or hybrid motor vehicle and a transmitter base anchored in the ground of a charging station.

[0019] [Fig.l] schematically illustrates an electric or hybrid automobile vehicle V in a charging station. The charging station comprises a ground S comprising a transmitting base BE. The vehicle V comprises a charging receiver RE. The vehicle V comprises a front running gear and a rear running gear whose points of contact with the ground define a base plane XY defined by a first longitudinal direction X corresponding to straight-line driving, by a second transverse direction Y orthogonal to the first longitudinal direction X and a third vertical direction Z orthogonal to the first direction X and the second direction Y and is oriented away from the ground S. In addition, the charging station comprises an obstacle O. For example, the obstacle O is a wall. To replenish the electrical energy of the vehicle V, it is necessary to align the charging receiver RE and the transmitting base BE vertically along the third direction Z. The vehicle V comprises a front bumper P along the first direction X. The bumper P comprises at least one parking sensor for measuring the distance between the bumper and the obstacle DPA.A distance between the bumper and the charge receiver DR is predetermined. Indeed, the distance between the bumper and the charge receiver DR is provided by the manufacturer and varies depending on the vehicle V, and in particular the length of the vehicle V in the first direction X. In addition, the vehicle V comprises a warning means for informing a driver when recharging with electrical energy is possible, i.e. when the charge receiver RE is aligned with said transmitting base BE. Preferably, said warning means is an audible and / or visual warning means.

[0020] To enable the vehicle to be recharged with electrical energy, a method for aligning the charging receiver RE and the transmitting base BE is implemented. During a parameterization step, a distance between the transmitting base and the obstacle DGU is determined as a function of a distance between the bumper and the obstacle DPA. In one embodiment, the parameterization step can be performed manually as illustrated in FIG. 2. During a measurement step, the distance between the bumper and the obstacle DPA is measured by said at least one parking sensor. During a step for calculating a distance between the transmitting base and the bumper DGUP, the distance between the transmitting base and the bumper DGUP is calculated as a function of the distance between the transmitting base and the obstacle DGU and the distance between the bumper and the obstacle DPA.The distance between the transmitting base and the bumper DGUP is equal to the distance between the transmitting base and the obstacle DGU from which the distance between the bumper and the obstacle DPA is subtracted. In other words, the distance between the transmitting base and the bumper is calculated by the following formula: DGUP = DGU- DPA. During a step of calculating a distance to be covered T, the distance to be covered T is calculated according to the distance between the transmitting base and the obstacle DGU, the distance between the bumper and the obstacle DPA and the distance between the bumper and the load receiver DR. The distance to be covered T corresponds to . the distance that the vehicle V must travel to align the charging receiver RE and the transmitting base BE. The distance to travel T is equal to the distance between the transmitting base and the obstacle DGU from which is subtracted the distance between the bumper and the obstacle DPA and the distance between the bumper and the charging receiver DR. In other words, the distance to travel T is calculated by the following formula: T - EX3U - DPA - DR. During a moving step, the driver moves the vehicle V until the distance to travel T is less than a threshold tolerance value for which recharging with electrical energy is feasible. During a warning step, the warning means informs the driver when the distance to travel T is less than said threshold tolerance value. Thus, it is possible to proceed with recharging the vehicle with electrical energy.Recharging is carried out by a physical connection during which the transmitting base BE comprises a connector capable of plugging into the charging receiver RE of the vehicle V. In another embodiment, recharging is carried out by induction. Induction recharging, also known as wireless recharging, is a method of recharging electric vehicles that uses electromagnetic induction to transfer energy between the transmitting base BE and the charging receiver RE. Electromagnetic induction is defined as a time-varying magnetic field producing an electric current in an electrical conductor. Electromagnetic induction is explained by the Lenz-Faraday law.

[0021] [Fig. 2] schematically illustrates the vehicle V in the charging station during the configuration step. The vehicle V comprises a control for measuring the distance between the bumper and the obstacle DPA, for example a button dedicated to measuring the distance between the bumper and the obstacle DPA located in the passenger compartment of the vehicle or a functionality on the dashboard screen of the vehicle V. The configuration step comprises a step of vertical alignment of the bumper P and the transmitting base BE in the third direction Z during which the vehicle V moves until the bumper P is positioned above the transmitting base. When the bumper P is aligned with the transmitting base BE, the driver activates the measurement control and the measurement is carried out by said at least one parking sensor.Finally, a correlation step is performed to deduce the distance between the emitting base and the obstacle DGU as a function of the distance between the bumper and the obstacle DPA. Advantageously, the emitting base BE comprises a central axis and at least one end BEE, the bumper P being aligned with said end BEE. In this case, said parameterization step comprises a correction step during which a correction distance DC is subtracted from the distance between the emitting base and the bumper DPA to obtain the distance between the emitting base and the obstacle DGU. Preferably, the emitting base BE comprises a reference element allowing the posi . operation of the vehicle V to proceed with the setting step. Preferably, the reference element is a telescopic rod. Advantageously, the telescopic rod is made of rubber so as not to damage the vehicle V when the vehicle V is positioned against said telescopic rod. In addition, this makes it possible to preserve the telescopic rod due to the flexibility of the rubber.

[0022] Furthermore, the invention relates to a computer program configured to implement said method of aligning a charging receiver RE of an electric or hybrid motor vehicle V and a transmitting base BE anchored in the ground of a charging station. The invention also relates to a vehicle configured to implement said method previously described.

Claims

Claims

1. Method for aligning a charging receiver (RE) of an electric or hybrid motor vehicle (V) and a transmitting base (BE) anchored in the ground (S) of a recharging station to automatically recharge said vehicle (V) with electrical energy, said recharging station comprising a ground (S) and an obstacle (O), said vehicle (V) comprising a front running gear and a rear running gear whose points of contact with the ground define a base plane (XY) defined by a first longitudinal direction (X) corresponding to straight-line driving, by a second transverse direction (Y) orthogonal to the first longitudinal direction (X) and a third vertical direction (Z) orthogonal to the first direction (X) and to the second direction (Y) and is oriented away from the ground (S), the ground (S) comprising said transmitting base (BE), said vehicle (V) comprising a bumper (P) and a warning means,said bumper comprising at least one parking sensor making it possible to measure a distance between the bumper and the obstacle (DPA), the distance between the bumper and the load receptor (DR) being predetermined, characterized in that said method comprises the following steps:, - a step of configuring said vehicle to determine a distance between the transmitting base and the obstacle (DGU) as a function of a distance between the bumper and the obstacle (DPA); - a step of measuring the distance between the bumper and the obstacle (DPA) by said at least one parking sensor; - a step of calculating a distance between the transmitting base and the bumper (DGUP), the distance between the transmitting base and the bumper (DGUP) being equal to the distance between the transmitting base and the obstacle (DGU) from which the distance between the bumper and the obstacle (DPA) is subtracted; - a step of calculating a distance to be covered (T), the distance to be covered (T) being equal to the distance between the transmitting base and the obstacle (DGU) from which is subtracted the distance between the bumper and the obstacle (DPA) and the distance between the bumper and the load receiver (DR); - a step of moving the vehicle in the first direction (X) until the distance to be covered (T) is less than a value tolerance threshold; - a warning step by said warning means to warn the driver that the load receiver (RE) is aligned with said transmitting base (BE).

2. Method according to claim 1 characterized in that the vehicle comprises a control for measuring the distance between the bumper and the obstacle (DPA), said parameterization step comprising a step of vertical alignment of the bumper (P) and the transmitting base (BE) in the third direction (Z), a step of activating the measurement control, a step of measuring the distance between the bumper and the obstacle (DPA) by said at least one parking sensor, and a correlation step to determine the distance between the transmitting base and the obstacle (DGU).

3. Method according to claim 2 characterized in that the emitting base (BE) comprises a central axis (AC) and at least one end (BEE), said bumper (P) being aligned with said end (BEE) in the third direction (Z), said parameterization step comprising a correction step during which a correction distance (DC) is subtracted from the distance between the emitting base and the bumper (DPA) to obtain the distance between the emitting base and the obstacle (DGU).

4. Method according to claim 2 or 3 characterized in that the emitting base comprises a reference element, preferably a telescopic rod to facilitate the step of vertical alignment of the bumper (P) and the emitting base (BE).

5. Method according to claim 4 characterized in that said telescopic rod is made of rubber.

6. Method according to any one of claims 1 to 5 characterized in that, during said warning step, said warning means is an audible and / or visual warning means.

7. Computer program comprising instructions which, when the program is executed by a computer, cause the latter to implement the steps of the method of aligning a charging receiver of an electric or hybrid motor vehicle and a transmitting base anchored in a ground to carry out the automatic recharging of said vehicle with electrical energy according to any one of claims 1 QA

8. d U. Electric or hybrid motor vehicle comprising an electronic control unit configured to implement the method alignment of a charging receiver of an electric or hybrid motor vehicle and a transmitting base anchored in the ground to automatically recharge said vehicle with electrical energy according to any one of claims 1 to 6.

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