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Electric vehicle wireless charging device with frequency conversion and voltage stabilization

A technology for electric vehicles and wireless charging, which is applied in the direction of electric vehicle charging technology, electric vehicles, battery circuit devices, etc., and can solve the problems of unusable feedback regulator circuits and methods

Active Publication Date: 2017-07-07
SHENZHEN TTK TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the voltage feedback loop between the secondary reel and the primary reel in the wireless charging device should also be non-contact, that is, there is no wire connection between the primary reel and the secondary reel, so that the existing technology can be used for wired charging. The feedback voltage stabilization circuit and method between circuits cannot be used in wireless charging devices, so a voltage stabilization control method suitable for wireless charging is required

Method used

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  • Electric vehicle wireless charging device with frequency conversion and voltage stabilization
  • Electric vehicle wireless charging device with frequency conversion and voltage stabilization
  • Electric vehicle wireless charging device with frequency conversion and voltage stabilization

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Embodiment Construction

[0022] Further details will be given below in conjunction with the embodiments shown in the accompanying drawings.

[0023] The present invention proposes a wireless charging device for electric vehicles with frequency conversion and voltage stabilization, which is used to charge the power battery pack in the vehicle driven by electric energy, such as figure 1 As shown, it includes a primary wire reel 11 installed on the ground of the parking space, and a secondary wire reel 21 installed on the electrically driven vehicle. The electric energy-driven vehicles include pure electric vehicles that only use battery packs as driving energy, and vehicles that use electric energy, fuel oil energy and gas energy as driving energy in combination. The wireless DC charging device also includes a frequency conversion power module 12 electrically connected between the primary reel 11 and the input power sources IA1, IA2, a wireless demodulation module 14 electrically connected to the freque...

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PUM

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Abstract

A frequency conversion voltage stabilizing electric automobile wireless charging device comprises a primary coil, a secondary coil, a frequency conversion power module, a wireless demodulation module, a power output module, a sampling module and a wireless modulation module. When an automobile is driven by electric energy to stop at a parking position and begins to be charged, the wireless modulation module and the wireless demodulation module are connected in a wireless mode, and the frequency conversion power module adjusts electric energy input into the primary coil through signals fed back by the wireless modulation module and the wireless demodulation module in the wireless mode according to the sampling module to enable the power output module to output the electric energy with constant voltage. The charging device achieves the effect that the electric energy change on one side of the secondary coil is fed back to one side of the primary coil in real time by utilizing the wireless communication mode, one side of the primary coil is controlled correspondingly, and voltage stabilizing control of the wireless direct current charging device is achieved through non-contact feedback and voltage stabilizing.

Description

technical field [0001] The present invention relates to a wireless charging device, in particular to a wireless charging device suitable for vehicles using electric energy as driving energy. Background technique [0002] A prior art wireless charging device for charging a vehicle powered by a rechargeable and dischargeable battery pack includes a primary coil installed in a parking space and a secondary coil installed on the vehicle. When the vehicle enters a parking space, the primary and secondary coils are substantially aligned. A voltage with a frequency of 15 kHz to 55 kHz is applied to the secondary coil to generate an alternating magnetic field of a corresponding frequency. The secondary on the corresponding surface is also like the principle of a transformer, and has an alternating voltage output. This voltage is converted to a DC voltage by a rectifier to charge the battery pack in the electric vehicle. During the charging process, the voltage of the battery pack...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J50/12H02J50/80H04B5/00B60L11/18
CPCY02T90/16
Inventor 陈胜奇林卫夫
Owner SHENZHEN TTK TECH
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