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Overlapped coil multi-phase receiving device applied to wireless power supply of mobile transportation equipment

A technology of overlapping coils and receiving devices, applied in circuit devices, transportation and packaging, battery circuit devices, etc., can solve the problems of low safety and reliability of power supply, high maintenance costs, and low power supply efficiency, and achieve a small fluctuation range of transmission power , large degree of freedom in size design, and the effect of large average transmission power

Active Publication Date: 2017-12-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problems of low safety and reliability of power supply, high maintenance cost and low power supply efficiency of existing mobile transportation equipment

Method used

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  • Overlapped coil multi-phase receiving device applied to wireless power supply of mobile transportation equipment
  • Overlapped coil multi-phase receiving device applied to wireless power supply of mobile transportation equipment
  • Overlapped coil multi-phase receiving device applied to wireless power supply of mobile transportation equipment

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specific Embodiment approach 1

[0048] Specific implementation mode 1. Refer to Figure 1 to Figure 17 Specifically explain this embodiment, the overlapping coil multi-phase receiving device applied to the wireless power supply of mobile transportation equipment described in this embodiment, the overlapping coil multi-phase receiving device cooperates with the bipolar power supply track to realize wireless energy transmission;

[0049] It includes n-phase receiving coils and ferrite cores 4, and each phase receiving coil includes m rectangular coils, wherein n is an integer greater than or equal to 2, and m is an integer greater than or equal to 1; the n-phase receiving coils are all located in ferrite the lower surface of the magnetic core 4;

[0050] The m×n coils are tiled and arranged sequentially along the actual moving direction. The front end of the latter receiving coil is pressed against the rear end of the previous receiving coil, and the overlapping area is equal in width. The distance D between t...

specific Embodiment approach 2

[0067] Specific implementation mode two, refer to image 3 , Figure 5 , Figure 9 , Figure 11 . Specifically describe this embodiment. This embodiment is a further description of the overlapping coil multi-phase receiving device applied to wireless power supply for mobile transportation equipment described in Embodiment 1. In this embodiment, the ferrite core 4 is a flat plate The ferrite core, the planar ferrite core completely covers the area surrounded by the inner edge of the n-phase receiving coil.

[0068] This enables the receiving coil to have sufficient self-inductance, while ensuring a high degree of coupling between the receiving coil and the transmitting coil in the power supply rail.

specific Embodiment approach 3

[0069] Specific implementation mode three, refer to Figure 12 Describe this embodiment in detail. This embodiment is a further description of the overlapping coil multi-phase receiving device applied to wireless power supply for mobile transportation equipment described in Embodiment 1. In this embodiment, the ferrite core 4 is a strip iron Ferrite cores, the strip ferrite cores are arranged parallel to the actual movement direction, and the distance between the outermost two strip ferrite cores completely covers the area surrounded by the inner edges of the n-phase receiving coil.

[0070] Compared with a whole flat ferrite core, the strip ferrite core will slightly reduce the power receiving performance of the receiving device, but it can reduce the weight of the receiving device and reduce the cost of the receiving device at the same time.

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Abstract

The invention relates to an overlapped coil multi-phase receiving device applied to the wireless power supply of mobile transportation equipment and belongs to the magnetic coupling resonance type wireless electric energy transmission technological field. With the overlapped coil multi-phase receiving device adopted, the problems of low power supply safety and reliability, high maintenance cost and low power supply efficiency of existing mobile transportation equipment can be solved. Each phase of receiving coils includes m rectangular coils; n phases of receiving coils are located at the lower surface of a ferrite magnetic core; m*n coils are sequentially laid and arranged flatly along an actual movement direction; the front end of a back coil is pressed on the rear end of a front coil, and widths of overlapped regions being equal; the spacing D of two adjacent receiving coils is 1 / n of the center-to-center spacing d of two adjacent magnetic poles in a bipolar power supply rail; the length of the actual movement direction of each rectangular coil does not exceed the center-to-center spacing d of the two adjacent magnetic poles in the bipolar power supply rail; and two adjacent receiving coils in each phase of receiving coils are connected in series with one another sequentially according to heteronymous ends. The overlapped coil multi-phase receiving device is suitable for wireless power supply of electric vehicles.

Description

technical field [0001] The invention belongs to the technical field of magnetic coupling resonant wireless power transmission. Background technique [0002] With the increasing awareness of low-carbon environmental protection and green energy saving, more and more mobile transportation equipment uses electric energy as its power source. Common power supply methods include sliding contact type, cable drag chain type and battery-powered type. Among them, the sliding contact method has low safety reliability and high maintenance cost, and the cable drag chain type has strict restrictions on the moving distance, and the use environment is very limited. In the case where the flexibility of the device is required to be high, it is usually powered by a battery. The battery power supply method has two disadvantages. One is the volume, weight, price, material, safety, charging speed, lifespan and other problems of the battery. The production process of the battery is highly pollutin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/12H02J7/00
CPCH02J7/00
Inventor 朱春波魏国姜金海汪超
Owner HARBIN INST OF TECH
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