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Wireless charging device and protection circuit thereof

A technology for wireless charging equipment and protection circuits, applied in the electronic field, can solve problems such as damage to battery packs, voltage rise in the rear stage, etc., achieve safe and reliable circuits, and solve the effects of battery packs and charging equipment

Pending Publication Date: 2019-09-27
深圳智链物联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a wireless charging device and its protection circuit, which aims to solve the problem that the current wireless charging method will cause the voltage of the rear stage to rise and damage the battery pack and charging device when the load is open.

Method used

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  • Wireless charging device and protection circuit thereof
  • Wireless charging device and protection circuit thereof
  • Wireless charging device and protection circuit thereof

Examples

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Embodiment 1

[0021] figure 1 The structure of the protection circuit of the wireless charging device provided by Embodiment 1 of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown. The details are as follows:

[0022] see figure 1 , a protection circuit 100 for a wireless charging device provided in an embodiment of the present invention is used for connecting with a wireless power receiving module of the wireless charging device. The above wireless charging device includes a wireless power sending module 200 and a wireless power receiving module 300, the wireless power sending module 200 includes a first control module 210 and a power supply module 220, the wireless power receiving module 300 includes a second control module 310 and a receiving module 320, receiving The output end of the module 320 is connected to the load (battery pack), and the first control module 210 is connected to the secon...

Embodiment 2

[0046] The wireless charging device 10 provided by Embodiment 2 of the present invention. The above wireless charging device 10 includes a wireless power transmitting module 200 , a wireless power receiving module 300 wirelessly connected to the wireless power transmitting module 200 , and the protection circuit 100 described in the first embodiment.

[0047] The wireless power transmission module 200 includes a first control module 210 and a power supply module 220, the power receiving module 300 includes a second control module 310, a power conversion module 320 and a receiving module 330, the voltage output terminal of the receiving module 330 is connected to a load, The first control module 210 is connected to the second control module 310 in communication, and the protection circuit 100 is connected to the power conversion module 320 .

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PUM

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Abstract

The invention relates to the technical field of electronics and provides a wireless charging device and a protection circuit thereof. The wireless charging device comprises a wireless power transmitting module and a wireless power receiving module; the wireless power transmitting module comprises a first control module and a power supply module; the power receiving module comprises a second control module and a receiving module; the protection circuit comprises a voltage comparison module, a switch module and a silicon controlled follow current module; when an overvoltage anomaly exists, the voltage comparison module is used for outputting a conduction signal to the switch module, the switch module is conducted, so that the silicon controlled follow current module is conducted; when the silicon controlled follow current module is conducted, the voltage of the voltage output end of the receiving module is reduced, and the second control module is powered off and stops working so as to enable the communication between the second control module and the first control module to be interrupted; when the first control module detects communication interruption of the first control module and the second control module, a power supply stop instruction is output to the power supply module, so that the power supply module stops working, and the circuit is safe, reliable and easy to realize.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a wireless charging device and a protection circuit thereof. Background technique [0002] An electric vehicle refers to a road vehicle that relies entirely or partially on electricity as a driving energy, including electric vehicles and electric bicycles. Electric vehicles need to charge the battery pack to supplement electric energy. Usually, the battery is charged through the charging and changing cabinet Charge. At present, most electric bicycle battery charging and changing cabinets use wired charging. The wired charging method requires frequent plugging and unplugging of the charging cable, and the life of the connector between the charging and changing cabinet and the battery pack is generally about 500`2000 times. Frequent plugging and high current charging will cause poor contact of the connector and increase the contact resistance. If the contact part ...

Claims

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Application Information

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IPC IPC(8): B60L53/10H02J7/04H02J7/00H02J50/00H02H7/18
CPCH02J7/045H02J7/025B60L53/10H02J50/00H02H7/18Y02T90/16Y02T10/70Y02T90/14Y02T10/7072
Inventor 李波徐想清
Owner 深圳智链物联科技有限公司
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