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Wireless charging apparatus with bidirectional energy flowing function

A two-way flow, wireless charging technology, applied in output power conversion devices, circuit devices, battery circuit devices, etc., can solve the problems of large volume and weight, low conversion efficiency, no power factor correction, etc., to achieve high transmission efficiency, Realize the effect of two-way flow of energy

Inactive Publication Date: 2017-08-18
刘庆
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wireless charging system with bidirectional energy transmission function proposed in the prior art uses a loosely coupled transformer, which has the disadvantages of large volume and weight, low conversion efficiency, and does not have the function of power factor correction

Method used

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  • Wireless charging apparatus with bidirectional energy flowing function

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Embodiment

[0022] Embodiment: a wireless charging device with energy bidirectional flow function (see figure 1 ), which includes the input-side controllable rectification link, Z-source converter, single-phase H-bridge inverter, wireless power transmission mechanism, and vehicle-mounted controllable rectification link. Divided according to the direction of energy flow, the following two ways of battery charging and battery discharging are described.

[0023] (1) Charging the battery, at this time, the contactless charging of the battery is realized through the grid.

[0024] The input-side controllable rectification link is composed of an inductor L, a first power switch tube Q1, a second power switch tube Q2, a third power switch tube Q3, and a fourth power switch tube Q4. When connecting, one end of the inductance L is connected to the l end of the grid, and the other end of the inductance L is respectively connected to the source of the first power switch tube Q1 and the drain of the...

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Abstract

The invention discloses a wireless charging apparatus with a bidirectional energy flowing function. The wireless charging apparatus comprises an input side controllable rectifying link which consists of an inductor L and power switching tubes Q1-Q4, a Z source converter which consists of inductors L1 and L2 and capacitors C1 and C2, a single-phase H-bridge inverter which consists of power switching tubes Q5-Q8, a wireless electric energy transmission mechanism which consists of a transmitting-receiving coil and a compensation network, and a vehicle-mounted controllable rectifying link which consists of power switching tubes Q9-Q12, wherein Q9-Q12 are connected with the capacitors C and the battery in parallel; and the compensation network comprises a primary side LCC compensating network which consists of a primary side compensating inductor Lp and two primary side compensating capacitors Cp and a secondary side LCC compensating network which consists of a secondary side compensating inductor Ls and two secondary side compensating capacitors Cs. The wireless charging apparatus has the functions of power factor correction and bidirectional energy flowing at the same time, and has high transmission efficiency.

Description

[0001] Technical field: [0002] The present invention relates to a wireless charging device, in particular to a wireless charging device with power factor correction and energy bidirectional flow function. [0003] Background technique: [0004] Wireless energy technology mostly involves the one-way charging mode in the field of electric vehicle charging, and rarely involves the discharging mode in which the battery feeds power to the grid. The wireless charging system with bidirectional energy transmission function proposed in the prior art uses a loosely coupled transformer, which has the disadvantages of large volume and weight, low conversion efficiency, and does not have the function of power factor correction. [0005] Invention content: [0006] The object of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a wireless charging device with power factor correction and bidirectional energy transmission functions and high t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/12H02J7/02H02M5/458H02J3/38
CPCH02M5/4585H02J3/381H02J7/025
Inventor 刘庆
Owner 刘庆
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