CN203303646U - Electric toy car utilizing rail type wireless power supply system to supply power - Google Patents

Abstract

The utility model discloses an electric toy car powered by a track-type wireless power supply system, which comprises a transmitting device and a receiving device with the same self-resonant frequency. The receiving device and the rectifying and stabilizing module are installed on the chassis, the receiving device is connected to the input end of the rectifying and stabilizing module, and the output end of the rectifying and stabilizing module is connected to the electric motor on the electric toy car. The power supply supplies power to the transmitting device, and the receiving device and the transmitting device work in resonant coupling at the resonant frequency. After receiving the energy, the receiving device converts it into a regulated DC power for the electric motor through a rectification and voltage stabilization module, and the toy car moves on the track. By changing the power of the power supply And the frequency can adjust the speed of the electric toy car. This system frees the electric toy car from the shackles of the battery, the size of the motor is reduced, the weight of the car body is reduced, the conversion efficiency of electric energy is high, the environmental pollution caused by the use of the battery is reduced, and a good effect of energy saving and environmental protection is achieved.

Description

An electric toy car powered by a rail-type wireless power supply system

technical field

The utility model relates to the field of wireless energy transmission, in particular to an electric toy car powered by a rail-type wireless power supply system.

Background technique

Electric toy cars and four-wheel drive vehicles are one of the common toys that children love. At present, these products on the market are powered by batteries. This method of replacing batteries has the following disadvantages: First, frequent battery replacements cause battery resources waste and environmental pollution; second, due to the weight of the battery itself, the motor on the toy car must increase the driving power when designing, which requires the use of a larger motor, and the manufacturing cost of the motor also rises accordingly. The speed itself will be limited to a certain extent.

With the continuous development of wireless power transmission technology, there have been many breakthroughs in product applications, such as mobile phones and computers with wireless power supply, tailless TVs that get rid of the shackles of wires, and small decorative lights with wireless power supply. A series of wireless power supply products Come out one after another. In 2007, Marin Solijacic, an assistant professor of physics at the Massachusetts Institute of Technology, and his research team made a public demonstration, using resonant coupling technology to successfully light up a 60W light bulb at a distance of 2 meters. Since then, resonant coupling wireless power transfer technology has gradually become a research hotspot. In the magnetic coupling resonant wireless power transmission system, the transmitting device and the receiving device must have the same self-resonant frequency, and the transmitting power source emits energy of the same frequency, and the energy is continuously transmitted from the transmitting end to the receiving end through magnetic coupling resonance.

Contents of the invention

The technical problem to be solved by the invention: Aiming at the deficiencies of the prior art, the utility model provides an electric toy car powered by a rail-type wireless power supply system, which solves the need for frequent replacement of batteries in existing toy cars, resulting in waste of battery resources and environmental pollution , At the same time, a high-power motor is required to overcome the dead weight of the battery to drive the toy car, resulting in technical problems such as increased motor manufacturing costs and limited speed of the toy car.

Technical solution: In order to solve the above-mentioned technical problems, the utility model adopts the following technical solution:

An electric toy car powered by a track-type wireless power supply system, including a matching electric toy car and a track, and a resonantly coupled energy transmitting device and an energy receiving device, the energy transmitting device is arranged under the track, and the The energy receiving device described above is arranged on the chassis of the electric toy car, and supplies power to the electric motor of the electric toy car.

Further, in the present utility model, the energy transmitting device includes an energy transmitting coil connected in series and a compensation capacitor at the transmitting end, and the resonant frequency of the energy transmitting device is adjusted by adjusting the compensating capacitor at the transmitting end; the energy receiving device includes a coil connected in series The energy receiving coil and the receiving end compensation capacitor are used to adjust the resonant frequency of the energy receiving device by adjusting the receiving end compensation capacitor. The transmitting device and the receiving device are adjusted to be at the same resonance frequency, and the electric energy is transferred through magnetic field coupling.

Further, in the present utility model, the track is arranged inside the energy transmitting coil. Placing the electric toy car on the track can transmit energy efficiently.

Further, in the utility model, a rectification and voltage stabilization module is also provided on the chassis of the electric toy car, and the rectification and voltage stabilization module rectifies and stabilizes the electric energy received by the energy receiving device to provide a stable voltage for the electric motor. of direct current.

Further, in the present utility model, a power supply for powering the energy transmitting device is also included, and the power supply is a power and frequency adjustable power supply. The operating frequency of the adjustable power supply is the same as the resonant frequency of the transmitting device and the receiving device, and the speed of the trolley can be changed by adjusting the power and frequency of the power supply.

Further, in the present utility model, the transmitting coil of the transmitting device adopts a rectangular spiral structure.

Beneficial effects: the utility model is based on the magnetic coupling resonance technology. When the transmitting device and the receiving device are working at the resonant frequency, the power supply continuously sends out electric energy through the transmitting coil, and the receiving device receives and transmits the electric energy to the rectifier through the coupling with the transmitting device. The voltage stabilizing module, the rectifying voltage stabilizing module converts electric energy into direct current and sends it to the electric motor, so that the electric toy car moves on the track, realizing the wireless power supply to the electric toy car. This system frees the electric toy car from the shackles of the battery, the size of the motor is reduced, the weight of the car body is reduced, the conversion efficiency of electric energy is high, and the environmental pollution caused by the use of the battery is reduced, which has a good effect of energy saving and environmental protection.

Description of drawings

Fig. 1 is the principle schematic diagram of the track type wireless power supply system of the electric toy car of the present invention;

Fig. 2 is the energy emission part and demonstration diagram of the specific embodiment of the utility model;

Fig. 3 is a schematic diagram of the chassis structure and the energy receiving part of the electric toy car of the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further explained.

As shown in Figure 1, the utility model designs an electric toy car powered by a track-type wireless power supply system, including a power supply 1, an energy transmitting device 2, a track 3, an energy receiving device 4, a rectifying and stabilizing module 5 and an electric toy car6. The power supply 1 is connected with the energy transmitting device 2 to form the energy transmitting part, and the energy receiving device 4, the rectification and voltage stabilization module 5 and the electric toy car 6 form the energy receiving part. The wireless power transmission model adopts the string compensation mode. The energy transmitting device 2 is composed of an energy transmitting coil 7 and a transmitting end compensation capacitor 8 connected in series. By adjusting the transmitting end compensating capacitor 8, the resonant frequency of the energy transmitting device 2 is adjusted. The energy receiving The device 4 is composed of an energy receiving coil 10 and a receiving end compensation capacitor 11 connected in series. By adjusting the receiving end compensation capacitor 11, the resonant frequency of the energy receiving device 4 is adjusted so that the energy transmitting device 2 and the energy receiving device 4 are at the same self-resonant frequency. The power source 1 supplies power to the energy transmitting device 2, the track 3 of the electric toy car 6 is arranged above the area where the energy transmitting coil 7 is located, the energy receiving device 4 and the energy transmitting device 2 are resonantly coupled, and by working at the resonant frequency, the energy receiving device 4 After receiving the energy, the rectification and voltage stabilization module 5 transforms it into stable direct current for the electric motor 12, and the electric toy car 6 moves on the track 3, and the speed of the electric toy car 6 can be adjusted by changing the power and frequency of the power supply 1.

As shown in Figure 2, the power supply 1, the energy transmitting coil 7 and the transmitting terminal compensation capacitor 8 are connected in series to form the energy transmitting part. The entire energy transmitting coil 7 adopts a rectangular spiral structure and is laid on the ground 9. The horizontal position of the track 3 is located at the energy transmitting coil. 7 Inside the rectangular area, considering the power supply size, self-resonant frequency and the requirements of the electric toy car, a certain height difference is allowed between the track 3 and the transmitting coil 7, and the electric toy car 6 is placed on the track 3. The track 3 is made of non-metallic and non-magnetic material to prevent absorbing the energy emitted by the transmitting device. Its shape and size in the rectangular area of the energy transmitting coil 7 and within a certain height range can be individually designed according to different needs.

As shown in FIG. 3 , the energy receiving device 4 and the rectifying and stabilizing module 5 constitute the energy receiving part, which is designed according to the size limitation of the chassis 13 of the electric toy car 6 and installed on the chassis 13 . The energy receiving device 4 is composed of a receiving coil 10 and a receiving end compensation capacitor 11. The energy receiving device 4 is connected to the input terminal of the rectifying voltage stabilizing module 5, and the output terminal of the rectifying voltage stabilizing module 5 is connected to the electric motor 12 to supply power to the electric motor 12. , drive the electric toy car 6 to move on the track 3 .

The system is based on the magnetic coupling resonance technology. When the energy transmitting device 2 and the energy receiving device 4 are working at the resonant frequency, the power supply 1 continuously sends out electric energy through the energy transmitting coil 7, and the energy receiving device 4 is coupled with the energy transmitting device 2. The electric energy is received and transmitted to the rectifying and stabilizing module 5 , which converts the alternating current into a stabilized direct current and sends it to the electric motor 12 , so that the electric toy car 6 moves on the track 3 . Just can control the traveling speed of electric toy car 6 by adjusting the output frequency and output power of power supply 1 . Multiple toy cars can be powered simultaneously within the maximum output power range of the power supply.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (6)

1. electric toy car that adopts rail mounted wireless power supply system power supply, comprise suitable electric toy car (6) and track (3), it is characterized in that: the energy emitter (2) and the energy receiving system (4) that also comprise the resonance coupling, described energy emitter (2) is arranged on track (3) below, and described energy receiving system (4) is arranged on the chassis of electric toy car (6), be the power electric motors of electric toy car (6).

2. a kind of electric toy car that adopts rail mounted wireless power supply system power supply according to claim 1, it is characterized in that: described energy emitter (2) comprises energy transmitting coil (7) and the transmitting terminal building-out capacitor (8) be in series, by regulating the resonant frequency of transmitting terminal building-out capacitor (8) adjusting energy emitter (2); Described energy receiving system (4) comprises energy receiving coil (10) and the receiving terminal building-out capacitor (11) be in series, by regulating the resonant frequency of receiving terminal building-out capacitor (11) adjusting energy receiving system (4).

3. a kind of electric toy car that adopts rail mounted wireless power supply system power supply according to claim 2, it is characterized in that: described track (3) is arranged on the inside of energy transmitting coil (7).

4. a kind of electric toy car that adopts rail mounted wireless power supply system power supply according to claim 1, it is characterized in that: also be provided with rectifying and voltage-stabilizing module (5) on described electric toy car (6) chassis, described rectifying and voltage-stabilizing module (5) is carried out rectifying and voltage-stabilizing by the electric energy that energy receiving system (4) receives, for described electro-motor provides galvanic current.

5. a kind of electric toy car that adopts rail mounted wireless power supply system power supply according to claim 1, it is characterized in that: also be included as the power supply (1) of energy emitter (2) power supply, described power supply (1) is power and frequency-adjustable power supply.

6. a kind of electric toy car that adopts the power supply of rail mounted wireless power supply system according to claim 1, is characterized in that: transmitting coil (7) the employing rectangular coil structure of described emitter (4).

Images