JPWO2021240402A5

JPWO2021240402A5 -

Info

Publication number: JPWO2021240402A5
Application number: JP2022572489A
Authority: JP
Publication date: 2024-04-23

Description

電力受信パッド２８に関して、電力受信パッド２８は、車両１０の車両本体１６の底面１８上に位置され得る。幾つかの実施形態においては、磁気センサ２２と同様に、電力受信パッド２８は、電力送信パッド２６と磁界の中心と整列させるために車両１０の縦軸線に沿って位置され得る。しかし、上述したように、電力送信パッド２６が車線の中心に位置していない例においては、電力受信パッド２８の位置を、車両１０の底面１８に沿って固定的にまたは移動可能に再配置することができる。幾つかの実施形態においては、電力受信パッド２８は、磁気センサ２２と同じ鉛直面上に位置している。電力受信パッド２８は、誘導電力送信パッドから電荷を無線で受信するための、誘導コイルなどのような任意の適切な無線電力受信装置であってよい。 With respect to the power receiving pad 28, the power receiving pad 28 may be located on the bottom surface 18 of the vehicle body 16 of the vehicle 10. In some embodiments, similar to the magnetic sensor 22, the power receiving pad 28 may be located along the longitudinal axis of the vehicle 10 to align with the power transmitting pad 26 and the center of the magnetic field. However, as mentioned above, in instances where the power transmitting pad 26 is not located in the center of the lane, the position of the power receiving pad 28 may be fixedly or movably relocated along the bottom surface 18 of the vehicle 10. In some embodiments, the power receiving pad 28 is located on the same vertical plane as the magnetic sensor 22. The power receiving pad 28 may be any suitable wireless power receiving device, such as an inductive coil, for wirelessly receiving an electric charge from the inductive power transmitting pad.

送信器回路６６は、無線で電力を送信するために、この技術における技量を有する者にはよく知られている、フルブリッジインバータ７２および、例えば、電力送信パッド２６のコイル３６であるコイル７８などのような構成要素を含んでいる。送信器回路６６は、例示の目的のみのために示されており、それに制限されないということは理解されるべきである。送信器回路６６はまた、開状態と閉状態との間で動作できる中継器７６を含むことができる。ずれ推定モードのときは、本明細書に開示されているように、送信器回路６６の中継器７６は、送信器回路６６ｃなどのような送信器回路６６を、ずれを推定するための適切な周波数に調整するために開状態に切り替えられる。電力送信モードのときは、本明細書に開示されているように、送信器回路６６ａ、６６ｂなどのような送信器回路６６の中継器７６は、電力を送信するための適切な周波数に送信器回路６６を調整するために閉状態に切り替えられる。幾つかの実施形態においては、送信器回路６６はずれ推定モードのときは第１周波数で動作し、送信器回路６６は電力送信モードのときは、干渉を回避するために、第１周波数とは異なる第２周波数で動作する。本明細書に記述されているように、例えば、送信器回路６６は、ずれ推定モードのときは４ｋＨｚと５ｋＨｚとの間で動作でき、送信器回路６６は、電力送信モードのときは７０ｋＨｚと９０ｋＨｚとの間で動作できる。 The transmitter circuit 66 includes components such as a full bridge inverter 72 and a coil 78, e.g., the coil 36 of the power transmission pad 26, well known to those skilled in the art for wirelessly transmitting power. It should be understood that the transmitter circuit 66 is shown for illustrative purposes only and is not limited thereto. The transmitter circuit 66 may also include a repeater 76 operable between an open state and a closed state. When in a misalignment estimation mode, as disclosed herein, the repeater 76 of the transmitter circuit 66 is switched to an open state to tune the transmitter circuit 66, e.g., transmitter circuit 66c, to an appropriate frequency for misalignment estimation. When in a power transmission mode, as disclosed herein, the repeater 76 of the transmitter circuit 66, e.g., transmitter circuit 66a, 66b, is switched to a closed state to tune the transmitter circuit 66 to an appropriate frequency for transmitting power. In some embodiments, the transmitter circuit 66 operates at a first frequency when in the offset estimation mode, and the transmitter circuit 66 operates at a second frequency, different from the first frequency, when in the power transmission mode to avoid interference. As described herein, for example, the transmitter circuit 66 can operate between 4 kHz and 5 kHz when in the offset estimation mode, and the transmitter circuit 66 can operate between 70 kHz and 90 kHz when in the power transmission mode.

訓練済み人工ニューラルネットワークによる横方向のずれの推定に基づいて、電力受信パッド２８の位置は、電力送信パッド２６が電力送信モードである間に、横方向のずれを正すためにブロック２０８において調整されることができる。これは、車両１０への電力転送を向上するために、車両１０上の電力受信パッド２８が電力送信パッド２６と整列することを確実にする。幾つかの実施形態においては、車両１０は、車両１０の操舵を自動的に調整するために電力受信システム２０と通信状態にある操舵モジュールを含むことができる。幾つかの実施形態においては、視覚または聴覚による通知などのような通知を、車両１０のエンターテイメントディスプレイシステムなどのような出力装置３０４（図８）を介して車両１０の運転手に提供することができる。通知は、電力受信パッド２８を電力送信パッド２６と整列させるためには、何れの方向に、およびどの程度車両１０を調整すべきかを示すことができる。他の実施形態においては、車両１０の底面１８に関する電力受信パッド２８の位置を、電力送信パッド２６と整列させるために手動または自動の何れかで調整することができる。例えば、電力受信パッド２８はトラックシステム２９（図１）上に位置されることができ、またはアクチュエータが、車両の横方向において電力受信パッド２８の位置を機械的に調整するために提供されることができる。自動的に調整されると、運転手を煩わす、および／または、道路に対して車両１０の位置を再配置する必要性がなくなる。 Based on the estimation of the lateral misalignment by the trained artificial neural network, the position of the power-receiving pad 28 can be adjusted in block 208 to correct the lateral misalignment while the power- transmitting pad 26 is in power transmission mode. This ensures that the power-receiving pad 28 on the vehicle 10 is aligned with the power-transmitting pad 26 to improve power transfer to the vehicle 10. In some embodiments, the vehicle 10 can include a steering module in communication with the power-receiving system 20 to automatically adjust the steering of the vehicle 10. In some embodiments, a notification, such as a visual or audio notification, can be provided to the driver of the vehicle 10 via an output device 304 ( FIG. 8 ), such as an entertainment display system of the vehicle 10. The notification can indicate in which direction and how much the vehicle 10 should be adjusted to align the power-receiving pad 28 with the power-transmitting pad 26. In other embodiments, the position of the power-receiving pad 28 relative to the bottom surface 18 of the vehicle 10 can be adjusted, either manually or automatically, to align with the power-transmitting pad 26. For example, the power-receiving pad 28 can be located on a track system 29 (FIG. 1) or an actuator can be provided to mechanically adjust the position of the power-receiving pad 28 laterally of the vehicle, without having to bother the driver and/or reposition the vehicle 10 relative to the roadway when automatically adjusted.

Claims

A vehicle,
a power receiving pad for wirelessly receiving power;
a plurality of magnetic sensors for measuring a magnetic field of the power transmission pad and acquiring magnetic field data;
one or more processors;
one or more memory modules , which when executed by the one or more processors while the vehicle is moving, cause the one or more processors to:
receiving the magnetic field data from the plurality of magnetic sensors;
estimating a lateral offset of the power-receiving pad relative to a magnetic field axis of the power-transmitting pad;
estimating a vertical offset between the power receiving pad and the power transmitting pad;
one or more memory modules having a computer readable medium storing computer readable instructions;
a suspension control module for adjusting a suspension of the vehicle based on the estimated vertical offset.

The vehicle of claim 1, wherein the lateral deviation is estimated by an artificial neural network.

The vehicle of claim 1, wherein the vehicle includes at least three magnetic sensors located proximate a front end of the vehicle.

The vehicle of claim 3, wherein the at least three magnetic sensors are positioned to detect an X component and a Y component of the magnetic field.

The vehicle of claim 1, further comprising a notification device for indicating the lateral deviation.

1. A power transmission system for dynamic power transfer, comprising:
A plurality of power transmission pads;
one or more processors;
one or more memory modules;
The one or more memory modules, when executed by the one or more processors, cause the one or more processors to:
receiving magnetic field data detected by a plurality of magnetic sensors of the vehicle detecting magnetic fields of the plurality of power transmission pads;
Detecting a position of the vehicle relative to the magnetic field;
sequentially activating the plurality of power transmission pads based on the position of the vehicle relative to the magnetic field.
A power transmission system comprising a computer readable medium having computer readable instructions stored thereon.

The power transmission system of claim 6 , wherein at least some of the power transmission pads overlap a portion of an adjacent power transmission pad in an overlapping region.

8. The power transmission system of claim 7, wherein in the overlap region, a first power transmission pad of the plurality of power transmission pads has a power output that decreases at a first rate and a second power transmission pad of the plurality of power transmission pads has a power output that increases at a second rate, the first rate corresponding to the second rate to provide uniform power from the first power transmission pad to the second power transmission pad.

each of the plurality of power transmission pads is switched from a deviation estimation mode to a power transmission mode;
the plurality of power transmission pads generate a magnetic field that is received by the plurality of magnetic sensors of the vehicle when in the offset estimation mode;
7. The power transmission system of claim 6 , wherein the plurality of power transmitting pads transmit power to a power receiving pad of the vehicle when in the power transmitting mode.

The power transmission system of claim 9 , wherein the computer readable instructions, when executed by the one or more processors, cause the one or more processors to estimate a speed of the vehicle.

10. The power transmission system of claim 9, wherein the plurality of power transmission pads operate at a first frequency when in the offset estimation mode and operate at a second frequency when in the power transmission mode, the first frequency being different from the second frequency.

7. The power transmission system of claim 6, wherein the computer readable instructions, when executed by the one or more processors, cause the one or more processors to adjust the magnitude of the magnetic field of the plurality of power transmitting pads based on an estimated vertical offset between a power receiving pad and the plurality of power transmitting pads.

1. A method for providing dynamic wireless power transfer to a vehicle while the vehicle is moving , comprising:
wirelessly receiving power from a plurality of power transmitting pads at a power receiving pad of the vehicle;
detecting a magnetic field provided by each of the plurality of power transmission pads using a plurality of magnetic sensors to obtain magnetic field data;
using the magnetic field to estimate a lateral offset of the power receiving pad relative to a magnetic field axis of the plurality of power transmitting pads;
using the magnetic field to estimate a vertical offset of the power receiving pad relative to the plurality of power transmitting pads;
adjusting the position of the vehicle to correct the lateral misalignment of the power-receiving pad ;
commanding the vehicle to adjust a suspension of the vehicle based on the estimated vertical offset;
The method comprises:

14. The method of claim 13 , further comprising instructing the plurality of power transmission pads to adjust a magnitude of the magnetic field based on the estimated vertical offset.

switching operation of each of the plurality of power transmission pads from a deviation estimation mode to a power transmission mode;
estimating a deviation of a vehicle when in the deviation estimation mode;
The method of claim 13 , further comprising: transmitting power to the power receiving pad of the vehicle when in the power transmitting mode.

decreasing a power output of a first power transmission pad of the plurality of power transmission pads at a forward end thereof at a first rate;
increasing the power output of a second power transmission pad of the plurality of power transmission pads at a rear end thereof at a second rate corresponding to the first rate;
14. The method of claim 13, wherein the front end of the first power transmission pad overlaps the rear end of the second power transmission pad at an overlap region to provide uniform power across the first power transmission pad and the second power transmission pad.