A parking guidance system of a parking lot includes: a first license plate number recognizing device recognizing a license plate number of a vehicle entering or exiting from a parking lot; and a server classifying a priority of the vehicle and distinguishing whether the vehicle is a parking or charging use vehicle based on the license plate number, assigning a parking or charging spot based on at least one of the classified priority, information on whether the vehicle is the parking use vehicle or the charging use vehicle, or information on remaining parking spots and remaining charging spots, providing a guidance on a position of the assigned parking spot or charging spot to the vehicle until the vehicle arrives at the position, and determining a parking fee or a charging fee of the vehicle and providing a guidance on the fee when the vehicle exits the parking lot.

A wireless charging system includes a power transmitting module and a power receiving module. The power transmitting module includes a first charging head and a plurality of first coils which are located on the first charging head and connected in parallel with each other. The power receiving module includes a second charging head and a plurality of second coils which are located on the second charging head and connected in parallel with each other. Thus, when the first charging head docks to the second charging head, each of the first coils faces to one of the second coils.

A wireless power transfer system 1 includes a power transmission device 2 and a power reception device 3. The power transmission device 2 is a power transmission device 2 installed in a road 4, is provided with a power transmission coil 21 that transmits power wirelessly, and is configured such that when installed in the road 4, the normal line of a coil plane of the power transmission coil 21 is inclined with respect to the normal line of the road surface of the road 4 in a lateral cross section of the road 4. The power reception device 3 is provided with a power reception coil 31 that receives power wirelessly, and at least a portion of the power reception coil 31 is housed in the wheel 6 of the moving body 5.

A position alignment method comprises recognizing the state of the plurality of GAs through wireless communication with an SECC for controlling the plurality of GAs, receiving information about one or more valid GAs among the plurality of GAs from the SECC, selecting a target GA on the basis of the information about the one or more valid GAs, and establishing a wireless communication link; making a request to the SECC for performing a position alignment approval and authentication process, performing position alignment with the target GA using an LF signal if the authentication is successful, transmitting a dataset to the SECC using the LF signal after the position alignment with the target GA, and pairing with the target GA based on the dataset.

A position alignment method comprises recognizing the state of the plurality of GAs through wireless communication with an SECC for controlling the plurality of GAs, receiving information about one or more valid GAs among the plurality of GAs from the SECC, selecting a target GA on the basis of the information about the one or more valid GAs, and establishing a wireless communication link; making a request to the SECC for performing a position alignment approval and authentication process, performing position alignment with the target GA using an LF signal if the authentication is successful, transmitting a dataset to the SECC using the LF signal after the position alignment with the target GA, and pairing with the target GA based on the dataset.

A method for measuring a position, is performed by a vehicle assembly (VA) for alignment between a ground assembly (GA) and the VA. The method includes transmitting low frequency (LF) signals to initiate alignment with the GA and estimating a position of a vehicle using at least one sensor mounted on the vehicle. Information regarding the estimated position of the vehicle is provided to the GA and information regarding a position of the vehicle measured by LF receive antennas of the GA and an acceleration flag calculated by the GA is received. Accordingly, a transmission strength of the LF signals transmitted by the VA is adjusted based on the information regarding the position of the vehicle measured by the LF receive antennas and the acceleration flag.

This application discloses a wireless charging receiver, transmitter, system, and control method, and an electric vehicle, and relates to the field of wireless charging technologies. A low-frequency magnetic field receive coil of the receiver converts a low-frequency magnetic field into an induced signal. A receiver controller is configured to: when all low-frequency magnetic field transmit coils stop working, allocate a signal feature different from that of a current induced signal to each low-frequency magnetic field transmit coil, and send a correspondence between each low-frequency magnetic field transmit coil and the allocated signal feature to the wireless charging transmitter; and is further configured to determine, when the low-frequency magnetic field transmit coil works, relative positions of the power transmit coil and the power receive coil by using an induced signal having the allocated signal feature.

This application discloses a wireless charging receiver, transmitter, system, and control method, and an electric vehicle, and relates to the field of wireless charging technologies. A low-frequency magnetic field receive coil of the receiver converts a low-frequency magnetic field into an induced signal. A receiver controller is configured to: when all low-frequency magnetic field transmit coils stop working, allocate a signal feature different from that of a current induced signal to each low-frequency magnetic field transmit coil, and send a correspondence between each low-frequency magnetic field transmit coil and the allocated signal feature to the wireless charging transmitter; and is further configured to determine, when the low-frequency magnetic field transmit coil works, relative positions of the power transmit coil and the power receive coil by using an induced signal having the allocated signal feature.

A device for locating a vehicle for an inductive energy transmission from an inductive charging device to the vehicle includes an ultrasound transmitter, which emits at least one first ultrasonic signal. At least three ultrasound receivers are situated on the vehicle, which receive an ultrasonic signal sequence having a direct receive signal and further receive signals in each case. A processing unit is situated on the vehicle, which is developed to ascertain the earliest receive direct receive signals within the ultrasonic signal sequences and to ascertain a position of the vehicle relative to the primary coil of the inductive charging device as a function of the ascertained direct receive signals.

A device for locating a vehicle for an inductive energy transmission from an inductive charging device to the vehicle includes an ultrasound transmitter, which emits at least one first ultrasonic signal. At least three ultrasound receivers are situated on the vehicle, which receive an ultrasonic signal sequence having a direct receive signal and further receive signals in each case. A processing unit is situated on the vehicle, which is developed to ascertain the earliest receive direct receive signals within the ultrasonic signal sequences and to ascertain a position of the vehicle relative to the primary coil of the inductive charging device as a function of the ascertained direct receive signals.