Power supply automatic switching circuit with battery undervoltage shutdown

A technology of automatic power supply and switching circuit, applied in the field of electronics, can solve problems such as explosion, damage to battery, isolation circuit voltage loss, etc., achieve the effect of simple circuit structure, reduce battery loss, and avoid reverse charging

Pending Publication Date: 2018-11-06
厦门市政智慧城市科技有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To this end, it is necessary to provide a circuit that overcomes the technical problems of voltage loss, battery damage, and even explosion caused by the isolation circuit in the prior art, and at the same time achieves a power-off protection function for battery undervoltage

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
  • Power supply automatic switching circuit with battery undervoltage shutdown
  • Power supply automatic switching circuit with battery undervoltage shutdown

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] In order to explain in detail the technical content, structural features, achieved goals and effects of the technical solution, the following will be described in detail in conjunction with specific embodiments and accompanying drawings.

[0015] see figure 1 and figure 2 As shown, a power supply automatic switching circuit with battery undervoltage shutdown in this embodiment includes an external power supply input terminal, an external power detection output control circuit, a power supply input terminal, a battery low voltage detection output control circuit, and a battery power supply on-off Control circuit, load output terminal, the external power supply input terminal is electrically connected to the external power detection output control circuit, the external power supply input terminal is connected to the load output after a Schottky diode D1, and the battery power supply input terminal is connected to the battery power supply input terminal respectively. The...

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 belongs to the technical field of electronics, and relates to a power supply automatic switching circuit with battery undervoltage shutdown. The power supply automatic switching circuitis characterized by comprising an external power supply input end, an external power detection output control circuit, a power supply input interface, a battery low voltage detection output control circuit, a battery power supply on / off control circuit, and a load output end, wherein the external power supply input end is electrically connected with the external power detection output control circuit, the external power supply input end passes a Schottky diode D1 and then is connected with a load output, a battery power supply input end is electrically connected with the battery power supply on / off control circuit and the battery low voltage detection output control circuit separately, the low voltage detection output control circuit and the external power detection output control circuitare electrically connected with the battery power supply on / off control circuit separately, and the battery power supply on / off control circuit is connected to the load output end. The power supply automatic switching circuit improves the use ratio of battery energy, lowers battery loss, and prolongs the service life of batteries. The circuit has a simple structure and has low manufacture cost.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a power supply automatic switching circuit with battery undervoltage shutdown. Background technique [0002] Most of the existing industrial control equipment is powered by a single power supply, either only external power supply or battery power supply. When the external power supply is disconnected or the battery power supply is insufficient, the equipment will no longer work normally; in addition, the battery power is often over-discharged. It will seriously damage the electrical performance and cycle life of the battery. Therefore, an effective means is needed to prevent these problems. The traditional solution is to use two Schottky diodes for isolation. Although this circuit scheme is simple and low in cost, the Schottky diode itself has voltage loss. , leading to the problem of low battery power utilization; there is also a plan to use a Schottky diode and...

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 Applications(China)
IPC IPC(8): H02J9/06H02J7/00
CPCH02J9/061H02J7/0031H02J7/0034
Inventor 汪俊林林挺苏晓丹
Owner 厦门市政智慧城市科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap