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Power supply circuit with battery under-voltage protection function and lamp control circuit

A technology of power supply circuit and protection function, applied in the field of power supply circuit and lamp control circuit, can solve the problems of battery over-discharge, affecting battery life, etc., and achieve the effect of improving reliability and life.

Active Publication Date: 2013-03-20
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a power supply circuit with a battery undervoltage protection function, aiming to solve the problem that the existing undervoltage protection circuit affects the battery life due to over-discharge of the battery

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  • Power supply circuit with battery under-voltage protection function and lamp control circuit
  • Power supply circuit with battery under-voltage protection function and lamp control circuit

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Embodiment Construction

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0018] figure 1 The structure of the power supply circuit with battery undervoltage protection function provided by the embodiment of the present invention is shown.

[0019] The power supply circuit with battery undervoltage protection function includes a power input terminal 100 connected to the battery and a plurality of power output terminals. As an embodiment of the present invention, the power output terminal includes a first power output terminal 201 and a second power output terminal 202, The power supply circuit also includes a leakage current reduction unit 300, which is respectively ...

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Abstract

The invention is applied in the technical field of protection circuits and provides a power supply circuit with a battery under-voltage protection function and a lamp control circuit. The power supply circuit comprises a power supply input end connected with the battery and a plurality of power supply output ends, and also comprises a leakage current reducing unit which is connected with the power supply input end and the power supply output ends respectively. In the power supply circuit, because the leakage current of the battery is reduced to about zero, the discharge time of the battery after voltage shortage is ensured, the battery is ensured not to be over discharged before next charge, and the operational reliability of the battery is improved, and the service life of the battery isprolonged.

Description

Technical field [0001] The invention belongs to the technical field of protection circuits, and particularly relates to a power supply circuit and a lamp control circuit with a battery undervoltage protection function. Background technique [0002] Existing battery under-voltage protection circuits mostly use under-voltage protection chips to form a closed loop detection. This circuit requires the under-voltage protection chip to have a higher power supply voltage than the voltage that needs to be protected, so that the under-voltage protection chip can work normally. , Reliably realize under-voltage protection, ensure that the leakage current of the battery is maintained within a certain range after under-voltage protection, and try to extend the discharge time of the battery. However, because such a circuit is connected to the undervoltage protection chip, the undervoltage protection chip also has leakage current. Even if the battery has undervoltage protection, the undervoltag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H05B37/02
CPCY02B20/42Y02B20/40
Inventor 周明杰陈永伦李万丰
Owner OCEANS KING LIGHTING SCI&TECH CO LTD