Super capacitor charging and discharging system with hysteretic characteristic under-voltage protection function

A technology of undervoltage protection and supercapacitor, which is applied in different battery charging, protection against undervoltage or no voltage, safety/protection circuit, etc. Overvoltage protection and other issues to achieve the effect of reliable power switching, eliminating the impact of shocks, and improving reliability

Active Publication Date: 2021-10-12
MEASUREMENT CENT OF GUANGDONG POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above-mentioned undervoltage protection circuit with hysteresis characteristics is suitable for the field of switching power supply, and is used to control the COMP (or EN) pin of the switching power supply control IC, and is not suitable for undervoltage protection of supercapacitors.
Moreover, the existing undervoltage protection circuit is complex and requires an additional power supply

Method used

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  • Super capacitor charging and discharging system with hysteretic characteristic under-voltage protection function
  • Super capacitor charging and discharging system with hysteretic characteristic under-voltage protection function
  • Super capacitor charging and discharging system with hysteretic characteristic under-voltage protection function

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.

[0023] It should also be further understood that the term "and...

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Abstract

The invention discloses a super-capacitor charging and discharging system with a hysteretic characteristic undervoltage protection function. Thesuper-capacitor charging and discharging system comprises a charging unit, a super-capacitor module, an undervoltage protection unit, a boosting unit, a voltage-sharing protection unit and a power supply monitoring unit; the charging unit is separately connected with a main power supply and the super-capacitor module, the power supply monitoring unit is respectively connected with a main power supply and the boosting unit, the voltage-sharing protection unit is connected with the super capacitor module, and the under-voltage protection unit is respectively connected with the super capacitor module and the boosting unit. Through the circuit system with the hysteresis characteristic undervoltage protection unit, the phenomenon of false shutdown-non-control startup caused by the insufficient capacity of the super-capacitor in the power supply process after boosting of the super-capacitor is avoided, the oscillation influence during power supply of the super-capacitor is eliminated, and the reliability of a super-capacitor power supply system is improved.

Description

technical field [0001] The invention relates to the technical field of electric energy storage, in particular to a supercapacitor charging and discharging system with a hysteretic characteristic undervoltage protection function. Background technique [0002] The existing charging and discharging system of supercapacitor and the method of overvoltage protection for charging and discharging of supercapacitor are all proposed to improve the reliability of supercapacitor, without considering the reliability of the entire power supply system when using supercapacitor for power supply, and the energy usage of supercapacitor The efficiency is not high enough. When a supercapacitor is used as a power supply, its power supply is analogous to a linear power supply rather than a switching power supply. In view of this, in most applications, the supercapacitor is boosted by a DC-DC boost chip before supplying power to the load. When the main power supply of the system is stopped (off)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02H3/24H02J7/34
CPCH02J7/0063H02J7/0031H02J7/0047H02H3/24H02J7/345
Inventor 张捷黄友朋招景明赵闻宋鹏商兵
Owner MEASUREMENT CENT OF GUANGDONG POWER GRID CO LTD
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