The invention discloses an inductive non-contact charging device with a precise centering function for an electric automobile. The inductive non-contact charging device comprises an electric energy transmitting terminal and an electric energy receiving terminal. The electric energy transmitting terminal enables an electric energy transmitting coil to generate a high-frequency alternating magnetic field through a PWM rectifying circuit and a high-frequency inverter circuit and sends the energy to an electric energy receiving coil, arranged on the automobile, in the electric energy receiving terminal. The power battery is charged through the rectifying circuit and a step-down circuit. Meanwhile, after center position information of the electric energy transmitting coil and center position information of the electric energy receiving coil are acquired and compared, the position of the electric energy transmitting coil is adjusted and centering between the electric energy transmitting coil and the electric energy receiving coil is achieved. The inductive non-contact charging device has the advantages that electric energy transmitting can be conducted efficiently, meanwhile, precise centering of the electric energy transmission coils at the two sides is conducted after the electric automobile stops completely by the adoption of a mechanical transmission device, and electric energy transmission efficiency is further improved.

Inductive non-contact charging device with precise centering function for electric automobile

The invention discloses an electric vehicle wireless charging transmitting and receiving automatic alignment system. The electric vehicle wireless charging transmitting and receiving automatic alignment system comprises a wireless receiving device and a wireless transmitting device, a communication connection being established between the wireless receiving device and the wireless transmitting device. The automatic alignment system further comprises a radio positioning device and a motor positioning driving device; the motor positioning driving device is arranged at the bottom of an electric vehicle; the wireless receiving device is arranged on the motor positioning driving device, and can move leftwards and rightwards under the driving of the motor positioning driving device; a communication connection is established between the radio positioning device and the motor positioning driving device; the radio positioning device includes a radio range-measuring circuit and a radio answering circuit; a communication connection is established between the radio range-measuring circuit and the radio answering circuit; after the radio range-measuring circuit transmits range-measuring radio signals, the radio answering circuit transmits response signals; the radio range-measuring circuit calculates position difference according to time length for receiving the response signals; and therefore, the motor positioning driving device can be controlled to move according to the position difference.

Electrical vehicle wireless charging transmitting and receiving automatic alignment system

The invention discloses a wireless charging method and system of an electric vehicle. The charging method comprises the following steps that firstly, preparatory work is conducted, wherein a wireless transmitting device is arranged on the ground of a parking area, electric vehicle guide rails are arranged on the two sides of the parking area and are each provided with a set of pressure sensor arrays, and a wireless receiving device is arranged on the bottom of the electric vehicle in a lifting mode through a lifting device; secondly, charging position alignment of the electric vehicle is conducted through the pressure sensor arrays; thirdly, the electric vehicle executes charging operation, wherein the wireless receiving device drives the lifting device to descend the wireless receiving device towards the wireless transmitting device to enable the wireless receiving device to get close to the wireless transmitting device, and energy transmission maximization is achieved.

Wireless charging method and system of electric vehicle

The invention discloses a wireless charging device for an electric car and a charging method of the wireless charging device. A visual identity module of an existing wireless charging alignment mechanism is high in cost, and a hoisting mechanism is difficult to control in a stepless mode. The electric car is pulled by a gravity sensor to enter the position over a cuboid cavity of a parking space,and a wireless charging receiving plate fixed to the tail of a chassis of the electric car is positioned through an ultrasonic transmitting and receiving device and a wireless electric signal receiver. The wireless charging transmitting plate moves in the X-axis, the Y-axis and the Z-axis directions through a three-degree-of-freedom movable working table, and the ultrasonic transmitting and receiving device comprises ultrasonic receivers and ultrasonic transmitters. The ultrasonic transmitters are arranged at the bottom of the wireless charging receiving plate, and the three or more ultrasonicreceivers are distributed on the same horizontal plane around the parking space and are not on the same straight line. After the center of the wireless charging transmitting plate aligns at the center of the wireless charging receiving plate, the wireless charging transmitting plate rises and transmits energy. According to the wireless charging device and the charging method, one-way distance-measurement ultrasonic positioning is adopted, and positioning is accurate.

Wireless charging device for electric car and charging method of wireless charging device

The invention discloses an electric automobile wireless charging positioning alignment device and a control method. The positioning alignment device comprises a wireless receiving device, a wireless transmitting device, a rubber positioning device, a camera and a microcontroller unit (MCU). The wireless receiving device is installed between a vehicle body and a license plate at the front end of the electric automobile. The electric automobile wireless charging distance is positioned through the rubber positioning device. The reference position of a wireless transmitting coil is imaged through the laser transmitting device. Reference point information of the wireless transmitting coil and a wireless receiving coil is collected through the camera. The wireless transmitting coil is controlled to carry out two-dimension position adjustment by comparing the coordinate position of a transmitting coil calibration point and a receiving coil calibration point, electric automobile wireless charging precision positioning is achieved, the problems that the cost of multiple coils is high and an alignment blind zone exists are avoided, and the alignment accuracy and efficiency are improved.

Electric automobile wireless charging positioning alignment device and control method

The invention discloses an induction type non-contact charging locating aligning device which comprises a rough aligning device, a vehicle-mounted electric energy receiving device, a ground electric energy emitting device, an ultrasonic wave accurate positioning system and an ultrasonic wave locating processing module. The rough aligning device comprises a front vehicle-mounted night vision camera, a rear vehicle-mounted night vision camera, a rearview mirror type display screen, a front ground identifier and a rear ground identifier. The ultrasonic wave accurate positioning system comprises an ultrasonic wave emitting sensor, an ultrasonic wave receiving sensor A, an ultrasonic wave receiving sensor B, an ultrasonic wave receiving sensor C, an ultrasonic wave receiving sensor D, a stepping motor A, a stepping motor B, a moving platform and a temperature sensor. The ultrasonic wave locating processing module comprises a vehicle-mounted processing module and a ground processing module. An induction type non-contact charging locating method comprises the steps that firstly, a driver completes rough location through images; secondly, an ultrasonic wave locating system is started; thirdly, the moving platform is aligned on the basis of position calculation.

Induction type non-contact charging locating aligning device and locating method thereof

The invention discloses a battery pack heat management device by employing a liquid medium. The device has a perfect battery pack heat management function, and according to the device, the heating and radiating of a battery pack can be finished, so that the battery pack always works in an optimal temperature range, the temperature of each battery unit can be accurately managed, and the time required for heating the battery pack is obviously shortened; and therefore, the consistency and good performance of the battery pack can be well guaranteed. The battery pack heat management device employing the liquid medium mainly comprises a liquid cooling box, an electronic fan, a liquid medium, a thermostat, a secondary liquid tank, a semiconductor and temperature sensor unit, a battery box temperature sensor, a battery unit, an outer battery box shell, a battery box insulation layer, an inner battery box shell, an electric pump, a battery management unit, a heating module and the like.

Battery pack heat management device

The invention discloses an electric automobile non-contact charging load self-adaption matching device and a control method The device comprises a three-phase rectifying device, a non-contact charging electric energy conversion device, a direct current voltage reducing circuit, a controller, a voltage current sampling circuit A, a voltage current sampling circuit B, a voltage current sampling circuit C and a storage battery The method comprises two stages including the parameter initial matching stage and the self-adaption regulation stage The device can realize the real-time matching, in the non-contact charging process, backend equivalent resistors can all maintain in positions near the optimum matching resistor, in addition, the precision is higher, and the whole system is sufficiently enabled to work in the optimum efficiency point at any time In addition, the charging safety of the batteries is also considered, the device can be used for judging the battery state, and high-precision constant-voltage charging and constant-current charging can be carried out

Liu Wei

Papers

Induction type non-contact charging locating aligning device and locating method thereof

Battery pack heat management device

Electric automobile non-contact charging load self-adaption matching device and control method