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A wireless charging system and wireless charging device

A technology of wireless charging and charging unit, which is applied to battery circuit devices, circuit devices, charging stations, etc., and can solve problems such as low reliability and large loss

Active Publication Date: 2021-03-02
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a wireless charging system and a wireless charging device to solve the problem of excessive loss and / or low reliability in the current charging technology using diodes or relays to achieve anti-reverse connection and / or anti-backfeeding process

Method used

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  • A wireless charging system and wireless charging device
  • A wireless charging system and wireless charging device
  • A wireless charging system and wireless charging device

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] The present invention provides a wireless charging system, such as figure 1 As shown, it includes a power supply unit and a charging unit, wherein the power supply unit includes a transmitting coil, PFC, an inverter and a primary side controller, the charging unit includes a receiving coil, a secondary side controller and a rectifier for connecting a battery, and the primary side controller It is connected with the secondary side controller through wireless or wired communication, the output terminal of the primary side controller is connected to the PFC and the inverter, and the input terminal of the secondary side controller is sampled and connected to the rectifier and battery.

[0023] Such as figure 2 As shown, the first MOS transistor Q1 is set between the positive pole of the rectifier and the positive pole of the battery, and the second MOS t...

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Abstract

The invention relates to the technical field of wireless charging, in particular to a wireless charging system and a wireless charging device. The power supply unit of the wireless charging system includes a transmitting coil, the charging unit includes a receiving coil, a secondary controller, and a rectifier for connecting to a battery, a first MOS transistor is arranged between the positive pole of the rectifier and the positive pole of the battery, and / or A second MOS tube is set between the negative pole of the rectifier and the negative pole of the battery; the secondary side controller samples and connects the rectifier and the battery, and when the output voltage of the rectifier is lower than the battery voltage, it controls the first MOS tube to cut off to prevent battery backfeeding; When the voltage of the battery is negative, the second MOS tube is controlled to cut off to prevent the reverse connection of the battery. Due to the strong anti-interference ability and low power consumption of the MOS, when realizing wireless charging anti-reverse connection and / or anti-reverse charging, The problem of excessive loss and / or low reliability in the current charging technology using diodes or relays to realize anti-reverse connection and / or anti-backfeeding is solved.

Description

technical field [0001] The invention relates to the technical field of wireless charging, in particular to a wireless charging system and a wireless charging device. Background technique [0002] With the steady advancement of the national new energy electric vehicle strategy, new energy electric vehicles ushered in explosive growth, and the problem that electric vehicles have to solve is the problem of charging. At present, most of the mass-produced pure electric vehicles are used in the market. Wired charging solutions are rarely used in wireless charging. Wireless charging can solve the cumbersome charging and plugging operation. It is convenient and quick to charge as you go, and can reduce the cost of many charging stations. Therefore, wireless charging will become a future trend. Wireless charging is not widely used. On the one hand, the conversion efficiency needs to be improved, and on the other hand, the circuit design needs to be improved. [0003] The patent lite...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/02H02J7/00H02J50/10B60L53/12
CPCH02J7/025H02J7/027H02J7/0034Y02T10/70Y02T10/7072Y02T10/72Y02T90/14
Inventor 肖兴兴宁小磊张瑞丰仝利锋尚岩
Owner ZHENGZHOU YUTONG BUS CO LTD
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