Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A control circuit for dual power supply switching power supply

A dual power supply switching and control circuit technology, which is applied in the direction of circuit devices, emergency power supply arrangement, electrical components, etc., can solve the problem that the power supply of the dual power supply system cannot be solved, and achieve the effect of preventing power supply from flowing backward

Active Publication Date: 2018-11-27
HEFEI LCFC INFORMATION TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the existing technologies can solve the problem of dual power supplies charging a battery and supplying power to the system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A control circuit for dual power supply switching power supply
  • A control circuit for dual power supply switching power supply
  • A control circuit for dual power supply switching power supply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] In the following, the structure and working principle of the embodiment of the present invention will be further described in conjunction with the accompanying drawings.

[0022] Such as figure 1 As shown, the control circuit for dual power supply switching power supply in the embodiment of the present invention has a first power supply terminal X and a second power supply terminal Y, the first power supply X is connected to the first power supply with higher priority, and the second power supply terminal Y is connected to Enter the second power supply with a lower priority. Both the first power supply and the second power supply are used to supply power to the system System, and the switching between the first power supply and the second power supply will not cause Current backflow.

[0023] A first branch is connected between the first power supply terminal X and the system System; a second branch is connected between the second power supply terminal Y and the system...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a dual power supply switching power supply control circuit, comprising a first power supply terminal and a second power supply terminal, the first power supply terminal and the second power supply terminal are both used for supplying power to a system, and the control circuit includes : a first branch connected between the first power supply terminal and the system and a second branch connected between the second power supply terminal and the system; the first branch has a series connection a first control switch and a second control switch, and a first logic circuit connected to the first control switch and a second logic circuit connected to the second control switch; the second branch has a series connection A third control switch and a fourth control switch, and a third logic circuit connected to the third control switch and a fourth logic circuit connected to the fourth control switch. By adopting the control circuit of the present invention for switching the power supply by the dual power supply, the dual power supply switching can be performed, and the power supply can be prevented from being backflowed.

Description

technical field [0001] The invention relates to a power supply management circuit of electronic products with dual power supplies, in particular to a control circuit for switching power supply with dual power supplies. Background technique [0002] At present, with the popularization of dual-power / multi-power electronic products, especially with the popularization of wireless charging technology, a method for managing multiple power sources is needed. Especially in the case where the first power supply is grid power and the second power supply is wireless charging, etc., it is necessary to solve the problem of how to control the power supply when the dual power supply is switched, so as to effectively prevent the power supply without affecting the use of electronic products. pour back. None of the prior art can solve the problem of dual power sources charging a battery and supplying power to the system. Contents of the invention [0003] In order to solve the above probl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06
CPCH02J9/061H02J9/068
Inventor 张伟任磊
Owner HEFEI LCFC INFORMATION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com