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A supercapacitor charging and discharging system with hysteresis characteristic undervoltage 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 little impact on life

Active Publication Date: 2022-02-01
MEASUREMENT CENT OF GUANGDONG POWER GRID CO LTD
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  • 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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  • A supercapacitor charging and discharging system with hysteresis characteristic undervoltage protection function
  • A supercapacitor charging and discharging system with hysteresis characteristic undervoltage protection function
  • A supercapacitor charging and discharging system with hysteresis characteristic undervoltage 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 supercapacitor charging and discharging system with a hysteretic characteristic undervoltage protection function, which includes a charging unit, a supercapacitor module, an undervoltage protection unit, a boost unit, a voltage equalization protection unit, and a power supply monitoring unit. The charging unit is respectively connected to the main power supply and the supercapacitor module, the power monitoring unit is respectively connected to the main power supply and the boost unit, the voltage equalization protection unit is connected to the supercapacitor module, and the undervoltage protection unit is respectively connected to The supercapacitor module and the boost unit. The invention avoids the phenomenon of false shutdown and uncontrolled startup due to the insufficient capacity of the supercapacitor during the power supply process after the supercapacitor is boosted by the undervoltage protection unit circuit system with hysteresis characteristics, and eliminates the impact of the shock when the supercapacitor is powered. The reliability of the supercapacitor 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 Patents(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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