Low-frequency PWM rectifier and compensation capacitor based wireless charging apparatus

A technology for compensating capacitance and wireless charging, applied in battery circuit devices, circuit devices, current collectors, etc.

Inactive Publication Date: 2016-06-22
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, such a high-power magnetic coupling resonant wireless charging device based on the combination of low-frequency PWM rectifier and compensation capacitor to simultaneously realize the receiving circuit resonance and output voltage target value has no patents or literature reports.

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  • Low-frequency PWM rectifier and compensation capacitor based wireless charging apparatus
  • Low-frequency PWM rectifier and compensation capacitor based wireless charging apparatus
  • Low-frequency PWM rectifier and compensation capacitor based wireless charging apparatus

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Embodiment Construction

[0041] The present invention proposes a wireless charging device based on a low-frequency PWM rectifier and a compensation capacitor, the embodiment of which is as follows figure 1 and figure 2 As shown, it includes a rectifier circuit 1, a first filtering capacitor 2, a first inverter power switch 3, a second inverter power switch 4, a third inverter power switch 5, a fourth inverter power switch 6, and a transmitter Circuit resonant capacitor 7, first Hall current sensor 8, transmitting circuit resonant coil 9, receiving circuit resonant coil 10, compensation capacitor 11, second Hall current sensor 12, first rectifying power switch 13, second rectifying power switch 14 , the third rectifying power switch 15, the fourth rectifying power switch 16, the second filter stabilizing capacitor 17, the first resonant filter capacitor 18, the first resonant filter inductor 19, the second resonant filter capacitor 20, and the second resonant filter inductor 21 , a load resistor 22, ...

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Abstract

The invention discloses a low-frequency PWM rectifier and compensation capacitor based wireless charging apparatus. The wireless charging apparatus comprises a rectifying circuit, a filtering voltage-stabilizing capacitor, an inversion power switch, a launching circuit resonant capacitor, a hall current sensor, a launching circuit resonant coil, a receiving circuit resonant coil, a compensation capacitor, a rectifying power switch, a resonant filtering capacitor, a resonant filtering inductor, a load resistor, a high frequency inversion driving circuit, a microprocessor, an analog-digital converter, a hall voltage sensor, a signal detection conditioning circuit and a PWM rectifier driving circuit. According to the wireless charging apparatus, the resonance of the launching circuit and the receiving circuit is realized; the direct current voltage output range of the charging apparatus can be adjusted by the compensation capacitor; meanwhile, the operating frequency and loss of the power switch device are greatly lowered; the operating frequency section of the system is expanded; and the design flexibility of the resonant coil is improved as well.

Description

technical field [0001] The invention belongs to the technical field of wireless charging, and in particular relates to a magnetic coupling resonance wireless charging device, in particular to a wireless charging device based on a low-frequency PWM rectifier and a compensation capacitor. Background technique [0002] Compared with the traditional wired charging method, the wireless charging method has problems such as safe and convenient use, no sparks and mechanical wear, and can adapt to a variety of harsh environments. The wireless charging method mainly relies on the wireless power transmission technology. The wireless power transmission technology mainly includes three methods: radiation, electromagnetic induction and magnetic coupling resonance. Among them, the magnetic coupling resonance wireless power transmission technology is due to its transmission distance, power and efficiency. and other comprehensive advantages have been widely used. [0003] Magnetically coupl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J50/12
CPCH02J7/025
Inventor 谢岳王晓坤
Owner CHINA JILIANG UNIV
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